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We investigate photo-induced ferroelectric domain switching in a series of Pb(Zr0.2Ti0.8)O3/ La0.7Sr0.3MnO3 (PZT/LSMO) bilayer thin films with varying surface morphologies by piezoresponse force microscopy under light illumination. We demonstrate that reverse poled ferroelectric regions can be almost fully recovered under laser irradiation of the PZT layer and that the recovery process is dependent on the surface morphology on the nanometer scale. The recovery process is well described by the Kolmogorov-Avrami-Ishibashi model, and the evolution speed is controlled by light intensity, sample thickness, and initial write voltage. Our findings shed light on optical control of the domain structure in ferroelectric thin films with different surface morphologies. [ABSTRACT FROM AUTHOR]

Photoelectron emission microscopy (PEEM) is a versatile technique that can image a variety of materials including metals, semiconductors and even insulators. Under favorable conditions the most advanced aberration corrected instruments have a spatial resolution approaching 2 nm. Although PEEM cannot compete with transmission or scanning electron microscopies for ultimate resolution, the technique is much gentler and has the unique advantage of imaging structure as well as electronic and magnetic states on the nanoscale. Since the image contrast is derived from spatial variations in electron photoemission intensity, PEEM is ideal for interrogating both static and dynamic electronic properties of complex nanostructured materials. Here, we review the key principles and contrast mechanisms of PEEM and briefly summarize materials applications of PEEM. [ABSTRACT FROM AUTHOR]

Nanostructured silver films were deposited at room temperature on polypropylene non-wovens by radio frequency magnetron sputter coating to obtain the antibacterial properties, and the relationship between sputter parameters and antibacterial properties were investigated in this paper. The antibacterial activity of the materials was assessed using shake flask test. The effects of silver film deposition on surface morphology were characterised using SEM and AFM. Surface elemental compositions were also analysed using EDX analysis. The results of antibacterial tests revealed that deposition time was the key parameter affecting the antibacterial properties of the materials, while sputtering power and argon pressure seemed to have a slight effect on antibacterial performance. It is believed that the total amount of silver ions released from the silver coating was increased as the deposition time increased. The AFM images and quantitative analysis by EDX respectively revealed that increase in deposition time led to the increased coverage of silver film and the increased silver weight percentage per unit surface, which provided evidences for the increased release rate of the silver ions from coating. [ABSTRACT FROM AUTHOR]

In this paper, we devise techniques for immobilizing and allocating a single nanodiamond on the electron beam (e-beam) patterned smart substrate. The properly designed coordination markers on the semiconductor substrate and the high throughput of the confocal microscope provide us with a convenient tool to single out a nanodiamond with a size less than 100 nm and to study Raman spectroscopy. We observe a redshift in energy and broadening in the linewidth of the sp3 bonding Raman peak when the size of the diamond is decreased from 90 to 35 nm. The observed shifts and linewidth broadening arise from the phonon-confinement effects and are in good agreement with calculations reported by [Ager et al. Phys. Rev. B 43, 6491 (1991)] and [Yoshikawa et al. Appl. Phys. Lett. 62, 3114 (1993)]. [ABSTRACT FROM AUTHOR]

Water pollution is caused by heavy metals, minerals, and dyes. It has become a global environmental problem. There are numerous methods for removing different types of pollutants from wastewater. Adsorption is viewed as the most promising and financially viable option. Nanostructured materials are used as effective materials for adsorption techniques to extract metal ions from wastewater. Many types of nanomaterials, such as zero-valent metals, metal oxides, carbon nanomaterials, and magnetic nanocomposites, are used as adsorbents. Magnetic nanocomposites as adsorbents have magnetic properties and abundant active functional groups, and unique nanomaterials endow them with better properties than nonmagnetic materials (classic adsorbents). Nonmagnetic materials (classic adsorbents) typically have limitations such as limited adsorption capacity, adsorbent recovery, poor selective adsorption, and secondary treatment. Magnetic nanocomposites are easy to recover, have strong selectivity and high adsorption capacity, are safe and economical, and have always been a hotspot for research. A large amount of data has been collected in this review, which is based on an extensive study of the synthesis, characterization, and adsorption capacity for the elimination of ions from wastewater and their separation from water. The effects of several experimental parameters on metal ion removal, including contact duration, temperature, adsorbent dose, pH, starting ion concentration, and ionic strength, have also been investigated. In addition, a variety of illustrations are used to describe the various adsorption kinetics and adsorption isotherm models, providing insight into the adsorption process. [ABSTRACT FROM AUTHOR]

Oncolytic viruses (OVs) have emerged as a powerful tool in cancer therapy. Characterized with the unique abilities to selectively target and lyse tumor cells, OVs can expedite the induction of cell death, thereby facilitating effective tumor eradication. Nanoengineering‐derived OVs overcome traditional OV therapy limitations by enhancing the stability of viral circulation, and tumor targeting, promising improved clinical safety and efficacy and so on. This review provides a comprehensive analysis of the multifaceted mechanisms through which engineered OVs can suppress tumor progression. It initiates with a concise delineation on the fundamental attributes of existing OVs, followed by the exploration of their mechanisms of the antitumor response. Amid rapid advancements in nanomedicine, this review presents an extensive overview of the latest developments in the synergy between nanomaterials, nanotechnologies, and OVs, highlighting the unique characteristics and properties of the nanomaterials employed and their potential to spur innovation in novel virus design. Additionally, it delves into the current challenges in this emerging field and proposes strategies to overcome these obstacles, aiming to spur innovation in the design and application of next‐generation OVs. [ABSTRACT FROM AUTHOR]

Aluminum (Al)-based reactive materials have recently attracted much attention due to their excellent chemical energy release characteristics. However, there still exists a great challenge to improve the mechanical properties and energy density of Al-based reactive materials. In this work, we reported that core–shell nano-aluminum@fluororubber (nAl@F2311) composites with good mechanical properties and high energy release characteristics were designed and fabricated by the electrical exploding wires method. The results showed that Al nanospheres were coated by F2311 uniformly to form the nAl@F2311 core–shell microstructure with high Al contents. Quasi-static/Split Hopkinson Pressure Bar dynamic compression test results showed axial splitting failure mode of nAl@F2311 composites. nAl@F2311-10 composites with 90 wt. % Al contents had higher compressive strength, with quasi-static and dynamic compressive strength of 117.6 and 304.6 MPa, respectively. nAl@F2311-15 composites with 85 wt. % Al contents had a lower ignition threshold. Furthermore, the impact-induced energy release test showed higher fluorine contents will accelerate energy release, reduce impact ignition threshold, and improve the reaction efficiency of nAl@F2311 composites. The high reaction efficiency (97.79%) of the nAl@F2311-15 composites was obtained at an impact velocity of 1090 m/s. This offered a concept-of-proof work to design and fabrication of nanostructured reaction materials, which had high strength and energy release performance. [ABSTRACT FROM AUTHOR]

Layered lanthanum titanate (La2Ti2O7) perovskite is a good photocatalytic material owing to its high stability, strong redox ability, and non-toxicity. However, its inherent wide bandgap limits its application in photocatalytic hydrogen evolution. Therefore, combining La2Ti2O7 with two-dimensional (2D) narrow-bandgap semiconductors to form 2D/2D layered structures is the preferred strategy to improve its photocatalytic performance. In this study, a novel 2D/2D ZnIn2S4/La2Ti2O7 Z-scheme heterojunction was prepared through a solvothermal method. The experimental results show that when the molar ratio of La2Ti2O7 to ZnIn2S4 is 1 : 4, the hydrogen evolution rate of the composite under ultraviolet-visible light reaches 6.97 mmol g−1 h−1, which is 3.5 times higher than that of the pure ZnIn2S4. The results of the morphological characterization studies of the samples and the photoelectrochemical measurements show that channels for the rapid transfer of carriers are generated by the unique 2D/2D structure of these samples, and the separation and migration efficiency of the photogenerated carriers significantly improved due to the formation of the Z-scheme heterojunction. This study provides useful insights into the modulation of wide-bandgap semiconductors and research into solar energy conversion. [ABSTRACT FROM AUTHOR]

Metal anodes (e.g., Li and Zn) are promising candidates for high-energy and high-power rechargeable batteries. However, the commercialization of metal anodes is hampered by irregular dendrite growth, which severely deteriorates the safety and cyclability of metal anodes. Optimizing the electrolyte by nanostructured additives to regulate the metal deposition shows great potential since the electrochemically nonreactive feature endows the regulation function with good sustainability. In this manuscript, the fundamental dendrite formation models and key parameters for stabilizing metal anode are first discussed. The progress and functional mechanism of nanostructured additives for regulating the metal deposition are summarized in terms of regulatory model, i.e., deposition-, adsorption- and dispersion-type. Finally, we also provide a detailed concluding outlook, pointing out the future trend of selecting new nanostructured additive candidates and elucidating synergistic effects and underlying mechanisms with the key attention being given to the assessments of practicality. [ABSTRACT FROM AUTHOR]

Herein, we developed a cascade growth strategy to fabricate laminated heterostructures based on graphdiyne (GDY), which can not only retain the intrinsic structure of GDY to the maximum extent, but can also realize the effective regulation of its basic properties. A chlorine heteroatom-doped GDY film (Cl-GDY/GDY) was prepared by coupling hexaalkynylbenzene with a copper substrate pre-decorated with chlorine-substituted GDY (Cl-GDY). An interweaved aggregating morphology consisting of nanofibers and nanosheets was observed, which can be assigned to Cl-GDY and GDY components, respectively. Moreover, the interaction between Cl-GDY and GDY induced a tunable energy level structure. As a result, the conductive properties of the Cl-GDY/GDY films were enhanced by an order of magnitude rather than the simple superposition of the two components, which was clearly observed in both a carbon/electrolyte electrochemical cell and the carbon-based heterojunction device. [ABSTRACT FROM AUTHOR]

Cancer cells typically display redox imbalance compared with normal cells due to increased metabolic rate, accumulated mitochondrial dysfunction, elevated cell signaling, and accelerated peroxisomal activities. This redox imbalance may regulate gene expression, alter protein stability, and modulate existing cellular programs, resulting in inefficient treatment modalities. Therapeutic strategies targeting intra‐ or extracellular redox states of cancer cells at varying state of progression may trigger programmed cell death if exceeded a certain threshold, enabling therapeutic selectivity and overcoming cancer resistance to radiotherapy and chemotherapy. Nanotechnology provides new opportunities for modulating redox state in cancer cells due to their excellent designability and high reactivity. Various nanomaterials are widely researched to enhance highly reactive substances (free radicals) production, disrupt the endogenous antioxidant defense systems, or both. Here, the physiological features of redox imbalance in cancer cells are described and the challenges in modulating redox state in cancer cells are illustrated. Then, nanomaterials that regulate redox imbalance are classified and elaborated upon based on their ability to target redox regulations. Finally, the future perspectives in this field are proposed. It is hoped this review provides guidance for the design of nanomaterials‐based approaches involving modulating intra‐ or extracellular redox states for cancer therapy, especially for cancers resistant to radiotherapy or chemotherapy, etc. [ABSTRACT FROM AUTHOR]

Graphene quantum dot (GQD) is a new type of carbon nanometer material. In addition to the excellent properties of graphene, it is superior due to the quantum limit effect and edge effect. Because of its advantages such as water solution, strong fluorescent, small size, and low biological toxicity, it has important application potential in various fields, especially in sensors and biomedical areas, which are mainly used as optical electrical sensors as well as in biological imaging and tumor therapy. In addition, GQDs have very important characteristics, such as optical and electrical properties. There are many preparation methods, divided into top-down and bottom-up methods, which have different advantages and disadvantages, respectively. In addition, the modification methods include heterogeneous doping, surface heterogeneity, etc. There are still many challenges in developing GQDs. For example, the synthesis steps are still hard to conduct, but as the inquiry continues to deepen, GQDs will be revolutionary materials in the future. In this work, the literature concerning research progress on GQDs has been reviewed and summarized, while the key challenges of their application have been pointed out, which may bring new insights to the application of GQDs. [ABSTRACT FROM AUTHOR]

Postoperative implant infection is a severe complication in orthopedic surgery, often leading to implant failure. Current treatment strategies mainly rely on systemic antibiotic therapies, despite contributing to increasing bacterial resistance. In recent years, nanomaterials have gained attention for their potential in anti-infection methods. They exhibit more substantial bactericidal effects and lower drug resistance than conventional antimicrobial agents. Nanomaterials also possess multiple bactericidal mechanisms, such as physico-mechanical interactions. Additionally, they can serve as carriers for localized antimicrobial delivery. This review explores recent applications of nanomaterials with different morphologies in post-orthopedic surgery infections and categorizes their bactericidal mechanisms. [ABSTRACT FROM AUTHOR]

The inculcation of bioinspiration in sensing and human-machine interface (HMI) technologies can lead to distinctive characteristics such as conformability, low power consumption, high sensitivity, and unique properties like self-healing, self-cleaning, and adaptability. Both sensing and HMI are fields rife with opportunities for the application of bioinspired nanomaterials, particularly when it comes to wearable sensory systems where biocompatibility is an additional requirement. This review discusses recent development in bioinspired nanomaterials for wearable sensing and HMIs, with a specific focus on state-of-the-art bioinspired capacitive sensors, piezoresistive sensors, piezoelectric sensors, triboelectric sensors, magnetoelastic sensors, and electrochemical sensors. We also present a comprehensive overview of the challenges that have hindered the scientific advancement in academia and commercialization in the industry. [ABSTRACT FROM AUTHOR]

A mixed‐dimensional heterostructure comprising nanomaterials with varying dimensions provides a promising structure for an artificial synapse for reconfigurable neuromorphic functions. In this study, an 8 × 8 memristor crossbar array based on a mixed‐dimensional heterostructure comprising Cs1−xFAxPbBr3 (0.00 ≤ x ≤ 0.15) quantum dots (QDs) and different dimensional interfacial nanomaterial layers between the Al and ITO electrodes is designed and fabricated. This array device exhibits a high yield and reliable self‐rectifying analog switching characteristics with low synaptic‐coupling (SC, up to 5.19 × 10−5) and light emission, facilitating stimuli response visualization and preventing undesired pathways in the network array. Furthermore, because the formamidinium (FA) concentration alters the QD size, thereby engineering interfacial band alignment in the heterostructure, the essential synaptic properties such as dynamic range, SC, and nonlinearity can be improved. Especially, as x increases from 0 to 0.11, the recognition accuracy for the MNIST patterns increases significantly, from 68.97% to 89.08%, even for single‐layer ANNs. The energy consumption required for a specific accuracy level is reduced by a factor of 25.15. The utilization of mixed‐dimensional perovskite QD‐based heterostructures in neural networks may provide desirable neuromorphic electronic functions with enhanced learning capability and energy efficiency, while preventing unwanted neural signals. [ABSTRACT FROM AUTHOR]

Over the last ten years, the discovery of topological materials has opened up new areas in condensed matter physics. These materials are noted for their distinctive electronic properties, unlike conventional insulators and metals. This discovery has not only spurred new research areas but also offered innovative approaches to electronic device design. A key aspect of these materials is now that transforming them into nanostructures enhances the presence of surface or edge states, which are the key components for their unique electronic properties. In this review, we focus on recent synthesis methods, including vapor–liquid–solid (VLS) growth, chemical vapor deposition (CVD), and chemical conversion techniques. Moreover, the scaling down of topological nanomaterials has revealed new electronic and magnetic properties due to quantum confinement. This review covers their synthesis methods and the outcomes of topological nanomaterials and applications, including quantum computing, spintronics, and interconnects. Finally, we address the materials and synthesis challenges that need to be resolved prior to the practical application of topological nanomaterials in advanced electronic devices. [ABSTRACT FROM AUTHOR]

The document titled "Nanotechnologies and Nanomaterials: Selected Papers from CCMR" provides an overview of the applications and development of nanomaterial technology. It explores various methods of synthesizing nanomaterials and discusses their use in fields such as the Internet of Things, energy conversion, intelligent sensing, and biomimetics. The document also covers specific topics related to nanomaterials, including their synthesis, characterization, and applications in areas such as energy storage, electronics, and catalysis. [Extracted from the article]

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Metal nanoclusters (NCs) are gaining much attention in nanoscale materials research because they exhibit size-specific physicochemical properties that are not observed in the corresponding bulk metals. Among them, silver (Ag) NCs can be precisely synthesized not only as pure Ag NCs but also as anion-templated Ag NCs. For anion-templated Ag NCs, we can expect the following capabilities: 1) size and shape control by regulating the central anion (anion template); 2) stabilization by adjusting the charge interaction between the central anion and surrounding Ag atoms; and 3) functionalization by selecting the type of central anion. In this review, we summarize the synthesis methods and influences of the central anion on the geometric structure of anion-templated Ag NCs, which include halide ions, chalcogenide ions, oxoanions, polyoxometalate, or hydride/deuteride as the central anion. This summary provides a reference for the current state of anion-templated Ag NCs, which may promote the development of anion-templated Ag NCs with novel geometric structures and physicochemical properties. [ABSTRACT FROM AUTHOR]

Hydrazine monitoring for appropriate safety measures is crucial in safeguarding water quality, and protecting human health and the environment. Hydrazine sensing in water, which would prevent hydrazine exposure, has challenges associated with its detection and measurement. Herein, we report the synthesis of an ultrathin nanosheet-like CuO nanostructure using a one-step low-temperature solution process and utilize it to design an electrochemical non-enzymatic sensor for hydrazine detection. The synthesized ultrathin nanosheet-like CuO nanostructure material was characterized in detail. The non-enzymatic hydrazine sensor was evaluated using the cyclic voltammetry (CV) technique and non-enzymatic sensing performance was estimated after measuring the response in different hydrazine concentrations. The non-enzymatic hydrazine sensor showed good sensitivity (1300 μA mM−1 cm−2) in a wide-detection range (up to 3.5 mM). This non-enzymatic hydrazine sensor is associated with several advantages such as low cost, excellent stability, reproducibility, and selectivity. The ultrathin nanosheet-like CuO nanostructure offers a high surface area for hydrazine detection and can be used for future research in other analyte sensing. [ABSTRACT FROM AUTHOR]

Alkali metals (Li, Na, and K) are promising candidates for high‐performance rechargeable alkali metal battery anodes due to their high theoretical specific capacity and low electrochemical potential. However, the actual application of alkali metal anodes is impeded by the challenges of alkali metals, including their high chemical reactivity, uncontrolled dendrite growth, unstable solid electrolyte interphase, and infinite volume expansion during cycling processes. Introducing carbon nanotube‐based nanomaterials in alkali metal anodesis an effective solution to these issues. These nanomaterials have attracted widespread attention owing to their unique properties, such as their high specific surface area, superior electronic conductivity, and excellent mechanical stability. Considering the rapidly growing research enthusiasm for this topic in the last several years, we review recent progress on the application of carbon nanotube‐based nanomaterials in stable and dendrite‐free alkali metal anodes. The merits and issues of alkali metal anodes, as well as their stabilizing strategies are summarized. Furthermore, the relationships among methods of synthesis, nano‐ or microstructures, and electrochemical properties of carbon nanotube‐based alkali metal anodes are systematically discussed. In addition, advanced characterization technologies on the reaction mechanism of carbon nanotube‐based nanomaterials in alkali metal anodes are also reviewed. Finally, the challenges and prospects for future study and applications of carbon nanotube‐based AMAs in high‐performance alkali metal batteries are discussed. [ABSTRACT FROM AUTHOR]

The development of hydrogen evolution reaction (HER) catalysts with high performance under large current density is still a challenge. Introducing P vacancies in heterostructure is an appealing strategy to enhance HER kinetics. This study investigates a CoP−FeP heterostructure catalyst with abundant P vacancies (Vp−CoP−FeP/NF) on nickel foam (NF), which was prepared using dipping and phosphating treatment. The optimized Vp−CoP−FeP catalyst exerted prominent HER catalytic capability, requiring an ultra‐low overpotential (58 mV @ 10 mA cm−2) and displaying robust durability (50 h @ 200 mA cm−2) in 1.0 M KOH solution. Furthermore, the catalyst demonstrated superior overall water splitting activity as cathode, demanding only cell voltage of 1.76 V at 200 mA cm−2, outperforming Pt/C/NF(−) || RuO2/NF(+). The catalyst's outstanding performance can be attributed to the hierarchical structure of porous nanosheets, abundant P vacancies, and synergistic effect between CoP and FeP components, which promote water dissociation and H* adsorption and desorption, thereby synergically accelerating HER kinetics and enhancing HER activity. This study demonstrates the potential of HER catalysts with phosphorus‐rich vacancies that can work under industrial‐scale current density, highlighting the importance of developing durable and efficient catalysts for hydrogen production. [ABSTRACT FROM AUTHOR]

Nanocarbons play a significant role in the development of alternative, clean and sustainable energy technologies. The utility of low‐dimensional nanostructured carbons (one‐, two‐ and three‐dimensional) in the new generation of batteries have shown great potential due to their physicochemical and electrochemical properties as well as high safety. The electrodes made from nanostructured carbon materials with different dimensions, size and structures offer enhanced ionic transport and electronic conductivity as compared to conventional batteries. They also enable the occupation of all intercalation sites available in the particle which leads to high specific capacities, fast ion diffusion, superior rate capability and long‐term cyclability. The carbonaceous nanosized active materials are important to enhance the electrical conductivity of the electrode materials and buffer the structural change and strain during sodium insertion and extraction. Application potentialities of different low‐dimensional nanostructured carbons in sodium‐ion batteries (SIBs) are discussed in this part II. It also deals with the modifications made on the carbonaceous material by doping with heteroatoms, expressing diversified morphologies with porous materials or compositing with organic or inorganic species. [ABSTRACT FROM AUTHOR]

Two-dimensional (2D) nanomaterials have been widely used in gas sensing due to their large specific surface area, high surface reactivity, and excellent gas adsorption properties. This paper reviews the typical synthesis methods of various types of 2D nanomaterials and summarizes the recent progress in gas sensors based on 2D materials, such as noble metal nanoparticles (NPs), metal oxides (MOS), conductive polymers, other new 2D materials. The methods of doping, modification, and photoexcitation can effectively improve the gas-sensing properties of 2D materials. The sensitive mechanisms of heterojunction, Schottky junction, and photoexcitation in 2D material sensors are discussed in detail. This paper discusses the application prospects of 2D materials in wearable gas sensors, food safety, and self-powered sensing, and provides ideas for further applications in environmental quality monitoring and disease diagnosis. In addition, the opportunities and challenges for gas sensors based on 2D materials are also discussed. [ABSTRACT FROM AUTHOR]

The clustered regularly interspaced short palindromic repeats (CRISPR)/associated protein (CRISPR/Cas) system has been exploited as an efficient gene editing tool with precise site specificity and high efficiency; the delivery of the CRISPR/Cas system is critical for the efficacy of therapeutics and remains challenging. DNA nanomaterials are widely utilized as promising delivery carriers for gene agents because of their excellent molecular recognition capabilities, sequence programmability, and biocompatibility. Herein, recent advances in DNA nanomaterials for the delivery of CRISPR/Cas systems are summarized. Based on their construction strategy, DNA nanomaterial‐based carriers are categorized as branched DNA‐based nanostructures or rolling circle amplification (RCA)‐based DNA nanostructures. Representative studies on the design of DNA nanomaterials as CRISPR/Cas system delivery carriers are highlighted. The current challenges and opportunities for the development of DNA nanomaterials for the delivery of CRISPR/Cas systems are also discussed. It is envisioned that with the development of DNA nanotechnology, DNA nanomaterials will open up new possibilities for CRISPR/Cas‐based therapeutics. [ABSTRACT FROM AUTHOR]

High‐quality few‐layer M4C3Tx (M = V, Nb, Ta) MXenes are very important for applications and are necessary for clarifying their physicochemical properties. However, the difficulty in etching for themselves and the existence of MC/MC1−δ and M‐Al alloy impurities in their M4AlC3 precursors seriously hinder the achievement of defect‐free few‐layer M4C3Tx (M = V, Nb, Ta) MXenes nanosheets. Herein, three different defect‐free few‐layer M4C3Tx (M = V, Nb, Ta) nanosheets are obtained by using a universal synthesis strategy of calcination, selective etching, intercalation, and exfoliation. Comprehensive characterizations confirm their defect‐free few‐layer structure feature, large interlayer spacing (1.702–1.955 nm), types of functional groups (–OH, –F, –O), and abundant valance states (M5+, M4+, M3+, M2+, M0). M4C3Tx (M = V, Nb, Ta) free‐standing films obtained by vacuum filtration of few‐layer M4C3Tx inks show good hydrophilia, high thermostability, and conductivity. A roadmap on synthesis of defect‐free few‐layer M4C3Tx (M = V, Nb, Ta) nanosheets are proposed and three key points are summarized. This work provides detailed guidelines for the synthesis of other defect‐free few‐layer MXenes nanosheets, but also will stimulate extensive functional explorations for M4C3Tx (M = V, Nb, Ta) MXenes nanosheets in the future. [ABSTRACT FROM AUTHOR]

Developing a rational and cost-effective approach for designing highly-efficient and sustainable electrocatalysts is essential for clean and renewable hydrogen energy. Herein, we report nitrogen-doped CoP on two-dimensional ammoniated black phosphorus (BP) nanosheets (N-CoP/NH2-BP) as novel and highly-active heterostructure electrocatalysts for the hydrogen evolution reaction (HER). Using the reactive defects on the BP nanosheets as the original sites under NH3 gas, N-doped CoP nanocrystals were grown on the surface of the BP nanosheets that were functionalized with NH2 groups at their edge. The N-CoP/NH2-BP heterostructure exhibits low overpotentials of 90 and 246 mV at 10 and 200 mA cm−2, respectively, in an alkaline electrolyte. The excellent HER activity should be attributed to the synergistic effect between N-doped CoP and NH2-functionalized BP, in which NH2-BP, with its high electron mobility and hydrophilicity, accelerates the charge transfer and offers more active sites, moreover, N-doped CoP modulates the electronic structure of CoP for enhanced HER activity. This work not only provides a novel and effective electrocatalyst, but also opens up a straightforward strategy for the design of phosphorene-based electrocatalysts for highly efficient hydrogen evolution and beyond. [ABSTRACT FROM AUTHOR]

It is indeed critical to develop efficient and low-cost catalysts for water splitting to meet the growing energy demand. The resultant N-NiS bifunctional water electrolysis catalyst was in situ produced on nickel foam by a straightforward hydrothermal encapsulation sulphuration process, and it demonstrated good electrocatalytic activity. A polyaniline (PANI) coating was used as a nitrogen donor. The use of thermally degraded PANI as a nitrogen source to dope nickel sulfide is a productive and environmentally responsible substitute for the use of conventional hazardous NH3. The resulting change in the electronic structure of NiS due to nitrogen doping has improved its electrocatalytic performance, as evidenced by the alkaline electrolyzer made up of two pieces of the N-NiS electrode having a low cell voltage of just 1.57 V at 10 mA cm−2. This is noteworthy as it surpasses the performance of Pt/C and RuO2 electrode pairs currently available on the market. DFT calculations are conducted to understand the mechanism underlying the improved electrocatalytic performance and support the idea that the doping of N atoms changes the electronic structure of NiS and leads to the increase of vacancies around the Ni site, thereby facilitating the adsorption of intermediate products. [ABSTRACT FROM AUTHOR]

The comparative study of the catalytic behavior of K-modified CoMoS2-catalysts supported on Al2O3, carbon covered alumina (CCA) and graphene coated alumina (GCA containing 0.4, 1.2, and 1.7% of graphene) in synthesis gas and ethanol conversion (separately) to higher alcohols (HAS) and other oxygenates has been carried out. The supports and catalysts were characterized by N2 adsorption-desorption isotherms, pyridine adsorption, SEM, EDX, and TEM. In HAS from syngas, the catalyst supported on GCA materials showed better catalytic performances than the catalysts supported on alumina and carbon coated alumina (Cat-GCA > Cat-CCA > Cat-Al2O3). The spectroscopic results have established that the homogenous uniform coating of alumina by graphene nanosheets follows the order: GCA1 (1.7%) > GCA2 (1.2%) > GCA3 (0.4%). The yield of ethanol has a positive correlation with graphene wt. % in GCA. In ethanol conversion, graphene attenuate the interaction of the support/active site KCoMoS2 and with it its selectivity toward dehydrogenation/condensation reactions. The GCA1 supported catalyst exhibits low activity for the water–gas shift (WGS) reaction compared to its counterpart. Explanations of the observed phenomena have been suggested. [ABSTRACT FROM AUTHOR]

Zinc‐ion capacitors (ZICs) are regarded as highly promising candidates for electrical energy storage systems (EESs). However, some challenges must be met to achieve high energy density and long cycling life in practical applications. Herein, we report on design and preparation of 2D nanosheets of N,P‐co‐doped hierarchical porous carbon (GNPCs) by a one‐step process. Benefitting from the mesopores supporting rapid diffusive ion transport, sufficient micropores for charge storage, and high electrical conductivity enabled by N,P‐doping, the resulting GNPC cathodes for ZICs achieved a high capacity of 401 F g−1. In a complete device a high energy density of 180 Wh kg−1 was obtained at a power density of 85 W kg−1 at 0.1 A g−1. More importantly, the ZICs exhibit a good cycling stability with a capacity retention of 95 % after 10 000 cycles at a current density of 5 A g−1. Our work presents a good strategy for developing high‐performance carbon‐based cathodes for ZICs. [ABSTRACT FROM AUTHOR]

Polyaniline‐capped mesoporous carbon nanosheets with high conductivity and porosity are synthesized by vapor deposition polymerization. The mesoporous carbon template is prepared by removing ordered cubic iron oxide nanocrystals embedded in the carbon matrix obtained by thermal decomposition of an iron‐oleate complex in a sodium chloride matrix. The evaporated aniline monomers are slowly polymerized on the carbon surface pretreated with FeCl3 as an initiator, partially filling the carbon pores to improve conductivity. The resulting products exhibit efficient hybrid energy storage mechanisms of electric double‐layer capacitance and pseudocapacitance. When the nanosheets are assembled for a symmetric supercapacitor, the device capacitance reaches 107.8 F g−1, at a current density of 0.5 A g−1, and a capacitance retention of 69.6% is achieved at a ten times higher current density of 5 A g−1. Electrochemical impedance spectroscopy reveals that the transition from resistive to capacitive behavior occurs within 0.63 s, indicating that fast ion and charge transport results in high capacitance and rate capability. The corresponding energy and power densities are 9.59 Wh kg−1 and 200.1 W kg−1 at a current density of 0.5 A g−1, demonstrating efficient energy storage in a symmetric supercapacitor. [ABSTRACT FROM AUTHOR]

A simple and environmentally‐friendly approach was developed to synthesize 2D CuO nanosheets using electrochemical deposition. The formed 2D CuO nanosheets (NSs) exhibit numerous advantageous properties such as no toxicity, high electrical conductivity, large active surface area, and a p‐type semiconducting nature with a band gap of 1.2 eV. A sensitive electrochemical sensor was constructed for the amperometric detection of glucose to take advantage of these characteristics. The fabricated sensor displayed an excellent sensitivity of 2710 μA mM−1 cm−2 along with a wide linear range of 0.001–1.0 mM and a lower limit of detection of 0.8 μM (S/N=3). Additionally, the modified electrode possesses high selectivity and good stability. The outstanding electrocatalytic performance of the electrode is attributed to a large active surface area, unique structural morphology, and the high conductivity of the 2D CuO nanosheets. [ABSTRACT FROM AUTHOR]

The advancement of next-generation energy technologies calls for rationally designed and fabricated electrode materials that have desirable structures and satisfactory performance. Three-dimensional (3D) self-supported amorphous nanomaterials have attracted great enthusiasm as the cornerstone for building high-performance nanodevices. In particular, tremendous efforts have been devoted to the design, fabrication, and evaluation of self-supported amorphous nanomaterials as electrodes for energy storage and conversion devices in the past decade. However, the electrochemical performance of devices assembled with 3D self-supported amorphous nanomaterials still remains to be dramatically promoted to satisfy the demands for more practical applications. In this review, we aim to outline the achievements made in recent years in the development of 3D self-supported amorphous nanomaterials for a broad range of energy storage and conversion processes. We firstly summarize different synthetic strategies employed to synthesize 3D nanomaterials and to tailor their composition, morphology, and structure. Then, the performance of these 3D self-supported amorphous nanomaterials in their corresponding energy-related reactions is highlighted. Finally, we draw out our comprehensive understanding towards both challenges and prospects of this promising field, where valuable guidance and inspiration will surely facilitate further development of 3D self-supported amorphous nanomaterials, thus enabling more highly efficient energy storage and conversion devices that play a key role in embracing a sustainable energy future. [ABSTRACT FROM AUTHOR]

Metal complexes have shown promise as photosensitizers for cancer diagnosis and therapeutics. However, the vast majority of metal photosensitizers are not ideal and associated with several limitations including pharmacokinetic limitations, off-target toxicity, fast systemic clearance, poor membrane permeability, and hypoxic tumour microenvironments. Metal complex functionalized nanomaterials have the potential to construct multifunctional systems, which not only overcome the above defects of metal complexes but are also conducive to modulating the tumour microenvironment (TME) and employing combination therapies to boost photodynamic therapy (PDT) efficacy. In this review, we first introduce the current challenges of photodynamic therapy and summarize the recent research strategies (such as metal coordination bonds, self-assembly, π–π stacking, physisorption, and so on) used for preparing metal complexes functionalized nanomaterials in the application of PDT. [ABSTRACT FROM AUTHOR]

In the past few years, nanocellulose, as a new‐emerging colloid, has developed into a large family and gained increasing attention owing to its favorable properties. It represents a ubiquitous feature in electronics as different components according to principles extend across energy, lighting management, and transistors and biosensors to information technologies. Within these decades, there are a lot of remarkable phenomena, effects, and performances relevant to a few additional attributes of nanocellulose, making the electronics perform better and better. Toward the rapid nanotechnology development and the need of the society, characterizing this important nanomaterial and making more and more new electronics have become important things to be done. This review consolidates the contribution of nanocellulose to nano‐related electronics, summarizes these methods to utilize nanocellulose as any component in devices, and points out the attributes of the nanocellulose. In the devices, the recent advances into solid‐state electronics, optoelectronic devices, and flexible/wearable electronics are categorized. The intrinsic electrical, dielectric and electronic structures, and properties of nanocellulose related to the device performances are particularly summarized and analyzed, which is believed beneficial in providing a judgment criterion for devices in the future. [ABSTRACT FROM AUTHOR]

Metal–organic framework nanosheets (MONs) are expected to turn the cornerstone of integrated electronic and optoelectronic devices owing to their unique properties. However, as the premise and guarantee for research applications, adjustable preparation and accurate control of MONs remain a challenge. Here in this work, we demonstrate that the sizes and colors of MONs can be tuned by subtle control of the solution pH (from 3 to 11) during the precursor preparation. Where the variation of the sizes of MONs from nano-scale (lateral size smaller than 200 nm) to micro-scale (lateral size larger than 10 μm) was achieved, which was accompanied by the continuous color variation from green to gray for the solid-state samples, and from orange to pink for the colloidal suspensions. As a result, linear correlations between the sizes and colors of the MONs with the solution pH were established. Laser irradiation experiments further demonstrated the inverse relationship between the fluorescence intensity of MONs and the pH, providing a fairly good strategy for the controlled preparation and color adjustment of MONs. [ABSTRACT FROM AUTHOR]

Strengthening the interface interaction between metal and support is an efficient strategy to improve the intrinsic activity and reduce the amount of noble metal. Amorphization of support is an effective approach for enhancing the metal‐support interaction due to the numerous surface defects in amorphous structure. In this work, a Pd/a‐MnO2 electrocatalyst containing ultrafine and well‐dispersive Pd nanoparticles and amorphous MnO2 nanosheets is successfully synthesized via a simple and rapid wet chemical method. Differing from the crystal counterpart (Pd/c‐MnO2), the flexible structure of amorphous support can be more favorable to electron transfer and further enhance the metal‐support interaction. The synergism between Pd and amorphous MnO2 results in the downshift of the d‐band center, which is beneficial for the desorption of critical intermediates both in oxygen reduction reaction (ORR) and in ethylene glycol oxidation (EGOR). Due to the lower *.OH desorption energy of Pd/a‐MnO2 surface, the rapid dissociation of *OH from Pd facilitates the formation of H2O in ORR, thus demonstrating superior ORR performance comparable to Pt/C. For EGOR, the presence of amorphous MnO2 promotes the formation of adsorbed OH species, which accelerates the desorption of intermediate CO from Pd sites, and thus exhibits excellent EGOR activity and stability. [ABSTRACT FROM AUTHOR]

Electrochemical nitrogen reduction reaction (NRR) is a promising method for the synthesis of ammonia (NH3). However, the electrochemical NRR process remains a great challenge in achieving a high NH3 yield rate and a high Faradaic efficiency (FE) due to the extremely strong N≡N bonds and the competing hydrogen evolution reaction (HER). Recently, bismuth telluride (Bi2Te3) with two-dimensional layered structure has been reported as a promising catalyst for N2 fixation. Herein, to further enhance its NRR activity, a general doping strategy is developed to introduce and modulate the crystal defects of Bi2Te3 nanosheets by adjusting the amount of Ce dopant (denoted as Cex−Bi2Te3, where x represents the designed molar ratio of Ce/Bi). Meanwhile, the crystal defects can be designed and controlled by means of ion substitution and charge compensation. At −0.60 V versus the reversible hydrogen electrode (RHE), Ce0.3−Bi2Te3 exhibits a high NH3 yield (78.2 µg·h−1·mgcat−1), a high FE (19.3%), and excellent structural and electrochemical stability. Its outstanding catalytic activity is attributed to the tunable crystal defects by Ce doping. This work not only contributes to enhancing the NRR activity of Bi2Te3 nanosheets, but also provides a reliable approach to prepare high-performance electrocatalysts by controlling the type and concentration of crystal defects for artificial N2 fixation. [ABSTRACT FROM AUTHOR]

One-dimensional (1D) nanomaterials easily bend due to perturbations from their surroundings or their own behaviors. This phenomenon not only impacts the performances of various devices but has also been employed to develop a variety of new functional devices, in which the bending energies of the nanomaterials determine the device performances. However, measuring the energies of such nanomaterials is extremely difficult. Herein, pseudo-break imaging of 1D nanomaterials has been proposed and realized on individual carbon nanotubes (CNTs), in which a CNT appears to break and has a fracture but is actually intact. This imaging approach provides the values of the bending energies of the CNTs with an accuracy of 1–50 eV. Furthermore, this imaging approach can manipulate the bending shapes and energies of CNTs. This work presents a protocol for bending analysis and manipulation, which are vital to fundamental and applied studies of 1D nanomaterials. [ABSTRACT FROM AUTHOR]

Antimicrobial resistance (AMR) is one of the biggest threats to the environment and health. AMR rapidly invalidates conventional antibiotics, and antimicrobial nanomaterials have been increasingly explored as alternatives. Interestingly, several antimicrobial nanomaterials show AMR‐independent antimicrobial effects without detectable new resistance and have therefore been suggested to prevent AMR evolution. In contrast, some are found to trigger the evolution of AMR. Given these seemingly conflicting findings, a timely discussion of the two faces of antimicrobial nanomaterials is urgently needed. This review systematically compares the killing mechanisms and structure‐activity relationships of antibiotics and antimicrobial nanomaterials. We then focus on nano‐microbe interactions to elucidate the impacts of molecular initiating events on AMR evolution. Finally, we provide an outlook on future antimicrobial nanomaterials and propose design principles for the prevention of AMR evolution. [ABSTRACT FROM AUTHOR]

The development of nanotechnology has facilitated the application of various nanomaterials in concrete over the past decade. Few investigations have characterized early-age properties and cracking potential of concrete with nanomaterials. The present study aimed to expand the limitation by means of an experiment campaign, including a mechanical properties test, free shrinkage measurement, and restrained ring test on high-strength concrete (HSC) with nano- CaCO3 (NC). The proportions of NC were 0%, 1%, 2%, and 3% by the mass of cement. The results showed that HSC demonstrated higher mechanical properties with 1% NC incorporated. Adding NC reduced the free and restrained shrinkage of HSC. Stress relaxation and tensile creep were evaluated in this paper. The established relationship between relaxation and creep coefficients was sensibly independent of NC proportions, which contributed to better estimating the stress level in HSC with NC, so as to better evaluate the cracking potential at early age. [ABSTRACT FROM AUTHOR]

Bioactive materials are a special class of biomaterials that can react in vivo to induce a biological response or regulate biological functions, thus achieving a better curative effect than traditional inert biomaterials. For cancer theranostics, compared with organic or polymer nanomaterials, inorganic nanomaterials possess unique physical and chemical properties, have stronger mechanical stability on the basis of maintaining certain bioactivity, and are easy to be compounded with various carriers (polymer carriers, biological carriers, etc.), so as to achieve specific antitumor efficacy. After entering the nanoscale, due to the nano-size effect, high specific surface area and special nanostructures, inorganic nanomaterials exhibit unique biological effects, which significantly influence the interaction with biological organisms. Therefore, the research and applications of bioactive inorganic nanomaterials in cancer theranostics have attracted wide attention. In this review, we mainly summarize the recent progress of bioactive inorganic nanomaterials in cancer theranostics, and also introduce the definition, synthesis and modification strategies of bioactive inorganic nanomaterials. Thereafter, the applications of bioactive inorganic nanomaterials in tumor imaging and antitumor therapy, including tumor microenvironment (TME) regulation, catalytic therapy, gas therapy, regulatory cell death and immunotherapy, are discussed. Finally, the biosafety and challenges of bioactive inorganic nanomaterials are also mentioned, and their future development opportunities are prospected. This review highlights the bioapplication of bioactive inorganic nanomaterials. [ABSTRACT FROM AUTHOR]

Mesoporous carbon nanomaterials have shown a great application potential in energy storage and conversion fields due to their outstanding conductivity, tunable pore structure, and good chemical stability. Nevertheless, how to accurately control the pore structure, especially directly assembling the mesoporous carbon onto different substrates remains a big challenge. Herein, we have successfully assembled two kinds of highly nitrogen-doped mesoporous carbon onto carbon nanotubes (NMC/CNTs) based on a facile cooperative assembly process assisted by triblock PEO20PPO70PEO20 (P123) and PEO106PPO70PEO106 (F127) copolymers. The experimental results indicate that the P123/F127 mass ratio has a profound effect on the pore structure, leading to the formation of NMC/CNTs composites with spherical pore structure (S-NMC/CNTs) and cylindrical pore structure (C-NMC/CNTs). In virtue of fast electron/ion transfer kinetics, the as-prepared S-NMC/CNTs anode demonstrates an excellent electrochemical performance for lithium-ion batteries, and it delivers a high reversible capacity of 588.1 mAh·g−1 at the current of 0.1 A·g−1 after 100 cycles, along with a superior cycling stability. Specifically noted, the controlled assembly route developed in our work can also be applied to other support materials with different structures and compositions. [ABSTRACT FROM AUTHOR]

The emerging aramid‐mica nanopapers, composed of aramid nanofibers (ANFs) and mica nanosheets (Mica), exhibit superiority in the field of electrical insulation compared with commercial aramid‐mica micropapers. Unfortunately, their mechanical and electrical insulating properties are still less than ideal due to insufficient control of their microstructures. Herein, it is presented that by integrating ANFs and Mica into nacre‐like aramid‐mica nanopapers with improved structural orderliness, densification, and interlayer interaction, simultaneously improved mechanical and electrical insulating properties are achieved. Their maximum tensile strength and breakdown strength reach ≈292 MPa and ≈176 kV mm−1, respectively, which are superior to those of the state‐of‐the‐art ANFs‐based nanopapers. Particularly, the aramid‐mica nanopapers show high resistance to high‐temperature (250–300 °C) and oil‐bath (100 °C) environments commonly involved in practical applications, and can be recycled many times, demonstrating their great potential as high‐performance sustainable electrical insulating papers to be applied in advanced electrical equipment. [ABSTRACT FROM AUTHOR]

Chiral perovskite materials have intrigued enormous interests because of their appealing chiroptical properties and tailorable non‐centrosymmetric structures. However, it remains challenging to realize high‐efficiency blue emissive circularly polarized luminescence (CPL) of intrinsic chiral perovskite nanomaterials at room temperature. Herein, a robust and versatile electrospinning strategy is reported for in situ construction of chiral 2D and quasi‐2D perovskite nanosheets (PNSs) protected in polymer hybrid nanofibers. It is found that quasi‐2D chiral PNS/polymer possesses inherent chirality and enhanced CPL properties at room temperature compared to 2D counterparts. Notably, CPL emission color of chiral quasi‐2D PNS/polymer can be tuned from deep blue to sky blue, and a high luminescence dissymmetry values up to −8.0 × 10−3 can be achieved. Different perovskites, polymers, and nanofibrous structures are expanded to explore the universality of polymer protected PNSs. Significantly, compared to spin‐coated film, the stabilities of quasi‐2D PNS/polymer film are greatly improved due to the effective protection of polymer. The obtained PNS/polymer hybrid nanofiber films can be conveniently implemented for circularly polarized light emitting diode devices. This study may open up a new avenue for the scalable fabrication of chiral perovskite nanomaterials of interest and their applications in the CPL related fields. [ABSTRACT FROM AUTHOR]

Exploring highly active and robust self‐supporting air electrodes is the key for flexible Zn‐air batteries (FZABs). Therefore, we report a novel 3D structural bimetal‐based self‐supporting electrode consisting of hybrid Cu, Co nanoparticles co‐modified nitrogen‐doped carbon nanosheets on carbon cloth (Cu, Co NPs@NCNSs/CC), which displays excellent electrochemical activity and durability of the oxygen reduction/evolution reaction (ORR/OER). The Cu, Co NPs@NCNSs/CC exhibits a half‐wave potential of 0.863 V toward ORR and an overpotential of 225 mV at 10 mA cm−2 toward OER, owing to its exposed bimetallic sites accelerating the kinetic reaction. In addition, the density functional theory calculation proves that the synergistic effect of CuCo sites favors ORR and OER. Hence, the FZABs based on Cu, Co NPs@NCNSs/CC achieve a larger open‐circuit potential (1.45 V), higher energy density (130.10 mW cm−2), and outstanding cycling stability. All remarkable results demonstrate valuable enlightenment for seeking advanced energy materials of portable and wearable electronics. [ABSTRACT FROM AUTHOR]

Single-atom nanozymes (SANs) are the new emerging catalytic nanomaterials with enzyme-mimetic activities, which have many extraordinary merits, such as low-cost preparation, maximum atom utilization, ideal catalytic activity, and optimized selectivity. With these advantages, SANs have received extensive research attention in the fields of chemistry, energy conversion, and environmental purification. Recently, a growing number of studies have shown the great promise of SANs in biological applications. In this article, we present the most recent developments of SANs in anti-infective treatment, cancer diagnosis and therapy, biosensing, and antioxidative therapy. This text is expected to better guide the readers to understand the current state and future clinical possibilities of SANs in medical applications. [ABSTRACT FROM AUTHOR]

Plastic pollution has become a non-negligible global pollution problem. Nanoplastics (NP) can reach the bone marrow with blood circulation and develop hematotoxicity, but potential mechanisms and prevention strategies are lacking. Here, we report the biological distribution of NP particles in the bone marrow of mice and hematopoietic toxicity after exposure to 60 µg of 80 nm NP for 42 days. NP exposure inhibited the capability of bone marrow hematopoietic stem cells to renew and differentiate. Notably, probiotics and melatonin supplementation significantly ameliorated NP-induced hematopoietic damage, and the former was superior to the latter. And interestingly, melatonin and probiotic interventions may involve different microbes and metabolites. After melatonin intervention, creatine showed a stronger correlation with NP-induced gut microbiota disorders. In contrast, probiotic intervention reversed the levels of more gut microbes and plasma metabolites. Of these, threonine, malonylcarnitine, and 3-hydroxybutyric acid might be potential performers in the regulation of hematopoietic toxicity by gut microbes, as they had a more significant relationship with the identified microbes. In conclusion, supplementation with melatonin or probiotics may be two candidates to prevent hematopoietic toxicity attributable to NP exposure. Also, the multi-omics results may lay the foundation for future investigations into in-depth mechanisms. [ABSTRACT FROM AUTHOR]

The Pt-free photocatalytic hydrogen evolution (PHE) has been the focus in the photocatalytic field. The catalytic system with the large accessible surface and good mass-transfer ability, as well as the intimate combination of co-catalyst with semiconductor is promising for the promotion of the application. Here, we have reported the design of the two-dimensional (2D) porous C3N4 nanosheets (PCN NS) intimately combined with few-layered MoS2 for the high-effective Pt-free PHE. The PCN NS were synthesized based on peeling the melamine—cyanuric acid precursor (MC precursor) by the triphenylphosphine (TP) molecular followed by the calcination, mainly due to the matched size of the (100) plane distance of the precursor (0.8 nm) and the height of TP molecular. The porous structure is favorable for the mass-transfer and the 2D structure having large accessible surface, both of which are positive to promote the photocatalytic ability. The few-layered MoS2 are grown on PCN to give 2D MoS2/PCN composites based on anchoring phosphomolybdic acid (PMo12) cluster on polyetherimide (PEI)-modified PCN followed by the vulcanization. The few-layered MoS2 have abundant edge active sites, and its intimate combination with porous PCN NS is favorable for the faster transfer and separation of the electrons. The characterization together with the advantage of 2D porous structure can largely promote the photocatalytic ability. The MoS2/PCN showed good PHE activity with the high hydrogen production activity of 4,270.8 μmol·h−1·g−1 under the simulated sunlight condition (AM1.5), which was 7.9 times of the corresponding MoS2/bulk C3N4 and 12.7 times of the 1 wt.% Pt/bulk C3N4. The study is potentially meaningful for the synthesis of PCN-based catalytic systems. [ABSTRACT FROM AUTHOR]

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