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To identify microbial resources for dehalogenation, develop effective remediation strategies, and reveal their significance in "One Health", it is crucial to understand the occurrence, distribution, and drivers of soil dehalogenation functional traits and taxonomy groups at a broad scale, which is currently not well understood. To address the gaps, we characterized the biogeography of both dehalogenation traits and taxa assigned to six dehalogenation pathways, by metagenomic profiling global 4821 soils from eight habitats, based on a manually curated dehalogenase database (DhgaseDB). We found dehalogenation genes and microbes assigned to different pathways are everywhere, but varied consistently across habitats. The similarity of dehalogention traits and taxa composition declines with geographic distance, and that patterns are strongly correlated with geo-environmental factors. We identified anthropogenic organohalide pesticide inputs as the most influential factor on dehalogenation gene abundance, while soil properties, particularly pH, exert a larger impact on dehalogenation taxa diversity. Ultimately, we generated predictive maps of soil dehalogenation gene abundance and taxa diversity for the first time, highlighting the microbial dehalogenation hotpots in East Asia, Australia, Southern Africa, and coastal regions. Collectively, our study highlights the significant role of various microbial dehalogenation processes in organohalide biotransformation and environmental microecology, providing the necessary methodological basis for a deeper comprehension of the underlying mechanisms, thereby contributing to the advancement of tailored strategies for organohalide remediation. • DhgaseDB was established for fast and accurate analysis of dehalogenation genes and taxa. • Dehalogenation genes and microbes are prevalent in global soils, but varied consistently across habitats. • Pesticide inputs are key to gene abundance, while soil pH significantly affects microbial diversity. • The first predictive maps of soil dehalogenation gene abundance and taxa diversity were generated. [ABSTRACT FROM AUTHOR]

Food loss (FL), a widely acknowledged barrier for global sustainability, include both visible part related to quantity loss and food security concern and invisible part related to quality loss and food safety concern. However, existing FL quantification has often ignored the invisible contamination deterioration and quality degradation as well as their associated sustainability impacts. Here, we integrated economic cost accounting, disability-adjusted life years (DALYs) estimation, health risk assessment (hazard quotient, margin of exposure, and hazard index), and environmental footprint accounting to comprehensively assess both visible and invisible loss of maize and associated economic, health, and environmental impacts under different weather and regulatory levels, for a case of Jilin Province, China, using over 2-yr environmental test and multidisciplinary literature data. We show that in addition to the visible loss of 12.55% (¥703.81 million) of total production, there is an invisible loss of 2.10% (¥117.79 million) for maize in 2022 in Jilin, consisting of 1.78% market value loss (mainly due to moldy kernel, zearalenone (ZEN), unsound kernel and deoxynivalenol (DON)) and 0.32% health loss (due to aflatoxin B1 (AFB1)). Under full regulation, the exposure of both adults and children to mean levels of DON and ZEN is at the safe level, while their exposure to mean level of AFB1 leads to potential health risk. When exposed to extreme weather like typhoons, invisible loss in the postharvest handling and storage stage exceeds visible loss. The invisible loss varies considerably across regulation levels, stakeholders and countries, manifesting as a trade-off between market value loss and health threat. Our analysis enables comparisons of different sustainability implications of FL, among quantity and quality issues, indicators (e.g., multiple mycotoxins), and consequences (market versus health). Based on these results, we call for more common understanding, more comprehensive data, and more integrated quantification methods to identify FL reduction hotspots and interventions and ensure food security, safety, and sustainability. [ABSTRACT FROM AUTHOR]

Mitochondrial dysfunction plays a critical role in the pathogenesis of metabolic syndrome (MetS), affecting various cell types and organs. In MetS animal models, mitochondria exhibit decreased quality control, characterized by abnormal morphological structure, impaired metabolic activity, reduced energy production, disrupted signaling cascades, and oxidative stress. The aberrant changes in mitochondrial function exacerbate the progression of metabolic syndrome, setting in motion a pernicious cycle. From this perspective, reversing mitochondrial dysfunction is likely to become a novel and powerful approach for treating MetS. Unfortunately, there are currently no effective drugs available in clinical practice to improve mitochondrial function. Recently, L-lactate has garnered significant attention as a valuable metabolite due to its ability to regulate mitochondrial metabolic processes and function. It is highly likely that treating MetS and its related complications can be achieved by correcting mitochondrial homeostasis disorders. In this review, we comprehensively discuss the complex relationship between mitochondrial function and MetS and the involvement of L-lactate in regulating mitochondrial metabolism and associated signaling pathways. Furthermore, it highlights recent findings on the involvement of L-lactate in common pathologies of MetS and explores its potential clinical application and further prospects, thus providing new insights into treatment possibilities for MetS. • Mitochondrial dysfunction plays a critical role in the pathogenesis of metabolic syndrome (MetS). • Improving mitochondrial dysfunction is likely to become a novel and powerful approach for treating MetS. • L-lactate controls multiple mitochondrial metabolic progresses and functions. • L-lactate supplementation is potential to be a therapeutic tactic for MetS. [ABSTRACT FROM AUTHOR]

Triboelectric nanogenerator (TENG) is a new energy collecting technology based on the basic principles of electrostatic induction and contact electrification (CE). In general, TENGs can be affected by residual surface charges in their initial state during continuous operation and the polarity reversal phenomenon can occur from time to time, which is a negative effect related to the sensory functions of TENG. In this work, by using electrospinning techniques, the PVA and PAN nanofiber films have been attached on different electrification materials and the polarity reversal phenomenon of TENG can be regulated by changing the thickness of the nanofiber layer. Based on Wang transition model, this tunable polarity reversal phenomenon can be explained on the basis of electrification capability and regional mosaic effect of surface functional group. At the same time, a series of additional experiments have been done to isolate the contribution of electron transfer to polarity reversal from other possible influences, such as materials transfer, while specific methods for avoiding this phenomenon are also put forward on the basis of theoretical analysis. Weakening or eliminating the negative effects of TENG during different operating conditions can provide some assurance for device stability under long-term operation. Based on Wang transition model, the phenomenon of polarity reversal of TENG at the initial working state is experimentally and theoretically investigated. By introducing nanofibers on different substrates through electrospinning technique, the polarity reversal phenomenon is explained from the electrification capability of complex functional groups and regional mosaic effect. There is a difference in the electrification capability of functional groups in one kind of material and the contribution of different functional groups to contact electrification (CE) varies. In the process of CE between PVA and PET, due to the weak electron-withdrawing (EW) ability of hydroxyl (-OH), the electrons of PVA are obtained by PET, while during the CE between VHB and PET, it is easy to get electrons from PET because the strong electrostatic potential polarity of VHB. This creates a regional mosaic effect, which has an influence on the polarity of the normal operating TENG output. This work not only explains the occurrence of polarity reversal at the initial state of a continuously working TENG, but also suggests methods to avoid this negative effect so as to keep TENG working stable and continuously. [Display omitted] • For the first time, the tunable polarity reversal phenomenon of TENG is achieved by using electrospinning technology. • The regional mosaic effect and electrification capability is proved to be the reason of polarity reversal phenomenon. • The analysis based on Wang transition model can well explain all the results and numerical simulations can also well fit. • Several rules for material selection have been proposed for eliminating the polarity reversal phenomenon. [ABSTRACT FROM AUTHOR]

The biodegradable triboelectric nanogenerators (TENGs) for monitoring human physiological signals have attracted immensely attention in recent years. In this work, a water-soluble TENG (WS-TENG) is manufactured by using biodegradable recycled papers and water-soluble graphite electrode. The cellulose nanocrystal (CNC) in the papers is extracted and further mixed with methylcellulose (MC) to form a CNC/MC film, which can serve as the positive electrification material and form a TENG device with the common MC film as the negative electrification material. This low-cost, light weight and biodegradable WS-TENG that can be directly washed away by water is developed as a bandage sensor. Unlike traditional gauze sensors, the water-insoluble parts of our cellulose-based can be easily separated from water for reuse. The variation of the output voltage of WS-TENG between 0 V and 2 V can accurately distinguish various respiratory states, which is enough to be used as a real-time physiological signal monitoring sensor. This fully water-soluble device can serve as an advanced medical sensor and expand the application of TENG in health care monitoring field. [Display omitted] • It is proposed for the first time to recycle paper-based materials for a fully biodegradable water-soluble WS-TENG. • The CNC/MC film has excellent triboelectric properties and can be completely degraded in the natural environment. • WS-TENG can serve as a bandage sensor for real-time monitoring human respiration and physiological signals. [ABSTRACT FROM AUTHOR]

Triboelectric polymers have attracted tremendous attention due to the fast development of triboelectric nanogenerator (TENG). However, the detailed factors determining the polarity and the intensity of the electrification in polymers are still not fully revealed. Here, we demonstrated that N-containing polar groups and unsaturated bonds can break the spatial structural symmetry of the polytetrafluoroethylene (PTFE), improve the polarity and electronegativity of groups, turn them into polar polymers, intensify the electron cloud overlap to enhance the electron-withdrawing (EW) capability, thereby accurately regulate their electrification properties. In order to improve the triboelectric performance, a different modification strategy based on ion implantation technique is reported for generating these specific bonds to achieve ultrahigh negative triboelectric polymers. The modified fluorinated polymers exhibit ultrahigh negative triboelectric polarity and their surface charge density have 4~8 times enhancements comparing with original samples. Meanwhile, stronger polarity doubles the dielectric constant and further enhances the energy storage density of the material. The physical study in this work elaborates the fundamental mechanism by which molecular structures regulate macroscopic electrical properties, which provides a guidance for manufacturing advanced triboelectric polymers through the micro-regulation of polarity. There is a newly modification strategy based on ion implantation technique for regulating the polar bonds and unsaturated bonds of the polymer to prepare super negative triboelectric polymers. Their transferred densities increase 8 times than original samples. [Display omitted] • A different modification strategy based on N ion implantation technique is firstly reported. • The modified PTFE and FEP films have 4–8 times enhancements (125 μC m-2 and 230 μC m-2) on surface charge density. • Strong N-containing polar groups break the spatial structural symmetry of the PTFEs and enhance the electron-withdrawing capability. [ABSTRACT FROM AUTHOR]

l Synchronous regulation of γ -HCH dechlorination and methanogenesis were studied. l Microbial electrolysis cell was conducted to screen for optimum cathode potential. l Improved dechlorination was stimulated with either enhanced or inhibited methanogenesis. l Core microbial functional groups and relationships were selectively assembled. l A site-dependent strategy was proposed for win-win γ -HCH remediation solution. The wish for rapid degradation of chlorinated organic pollutants along with the increase concern with respect to greenhouse effect and bioenergy methane production have created urgent needs to explore synchronous regulation approach. Microbial electrolysis cell was established under four degressive cathode potential settings (from -0.15V to -0.60V) to regulate γ -hexachlorocyclohexane (γ -HCH) reduction while CH 4 cumulation in this study. The synchronous facilitation of γ-HCH reduction and CH 4 cumulation was occurred in -0.15V treatment while the facilitation of γ-HCH reductive removal together with the inhibition of CH 4 cumulation was showed in -0.30V treatment. Electrochemical patterns via cyclic voltammetry and morphological performances via scanning electron microscopy illustrated bioelectrostimulation promoted redox reactions and helped to construct mature biofilms located on bioelectrodes. Also, bioelectrostimulated regulation pronouncedly affected the bacteria and archaeal communities and subsequently assembled distinctly core sensitive responders across bioanode, biocathode and plankton. Clostridum, Longilinea and Methanothrix relatively accumulated in the plankton, and Cupriavidus and Methanospirillum , and Perimonas and Nonoarcheaum in biocathode and bioanode, respectively; while Pseudomonas, Stenotrophomonas, Methanoculleus and Methanosarcina were diffusely enriched. Microbial interactions in the ecological network were more complicated in -0.15V and -0.30V cathodic potential treatments, coincident with the increasement of γ -HCH reduction. The co-existence between putative dechlorinators and methanogens was less significant in -0.30V treatment when compared to that in -0.15V treatment, relevant with the variations of CH 4 cumulation. In all, this study firstly corroborated the availability to synchronously regulate γ -HCH reductive removal and methanogenesis. Besides, it paves an advanced approach controlling γ -HCH reduction in cooperation with CH 4 cumulation, of which to achieve γ-HCH degradation facilitation along with biogas (CH 4) production promotion with -0.15V cathode potential during anaerobic γ -HCH contaminated wastewater digestion, or to realize γ-HCH degradation facilitation with the inhibition of CH 4 emission with -0.30V cathode potential for an all-win remediation in γ -HCH polluted anaerobic environment such as paddy soil. [Display omitted] [ABSTRACT FROM AUTHOR]

Oral drug delivery plays a key role in the treatment of colon cancer. In this study, as a novel oral delivery system, drug tanshinone IIA (Tan IIA) was firstly loaded into β -cyclodextrin (β -CD) to prepare Tan IIA@ β -CD, which was subsequently encapsulated by Eucommia ulmoides rubber (EUR)/acetylated starch (AS) film to endow it colon-targeted drug release function. The constructed EUR/AS/Tan IIA@ β -CD was characterized using zeta potential, FT-IR, UV–vis, XRD, TG, SEM, and TEM. Moreover, in vitro release experiments revealed that the composite at optimal AS content (95 %) showed Tan IIA cumulative release rate of only 10 % in SGF, while it can reach the maximum value of 23 % in SIF. Analysis of drug release mechanism revealed two mainly distinct processes: erosion in SGF and diffusion in SIF. Furthermore, in vivo anticancer effect was evaluated in mice with orthotopic colon cancer model. After 28 days, compared to Tan IIA@ β -CD group, the tumor volume and weight in EUR/AS/Tan IIA@ β -CD group were decreased by 20.0 % and 34.6 %, respectively. Histological analyses showed that EUR/AS film significantly enhanced the available treatment against colon cancer cells. The proposed EUR/AS/Tan IIA@ β -CD system shows great potential for colon-targeted drug delivery and enhancing the therapeutic efficacy of colon cancer. [Display omitted] [ABSTRACT FROM AUTHOR]

Anodic bonding technique has been extensively utilized in the micro-electromechanical systems (MEMS) packaging or solar cell sealing. Nevertheless, the traditional power source for bonding method needs both high voltage and high current, which limits the widespread applications of anodic bonding and also gives rise to energy consumption. Therefore, for the first time, triboelectric nanogenerator (TENG) is used to drive anodic bonding. The TENG-based Anodic bonding system features lower current and much less transferred charges requirement, while no pre-tensile strength of the bonded pairs is needed to achieve completed bonding. Under the drive of TENG, the silicon-glass interface with the size of 100 mm2 can be tightly bonded within 40 s, which is comparable with the results driven by commercial power source. In addition, triple-stack anodic bonding driven by TENG through a two-step bonding process can be realized effectively with good reliability. This TENG-based Anodic bonding system with simple design and zero power consumption can significantly improve applications of anodic bonding in many fields, while it also opens up a promising utilization direction of the current signal of TENG. Image 1 • For the first time, Triboelectric nanogenerator (TENG) has been used to directly drive silicon-glass anodic bonding. • The TENG-based Anodic bonding system develops a new approach for utilizing the current signal from TENG. • For the same bonding area, TENG-based Anodic bonding system needs 19% of transferred charges of that driven by power source. • The TENG-based Anodic bonding has potential applications for MEMS packing and sensor fabrication. [ABSTRACT FROM AUTHOR]

This study utilizes visual analysis methods to retrospectively examine the evolution and trends in exercise interventions for knee osteoarthritis (KOA) research from 2011 to 2022. Bibliometric and visualization analysis review. Using the Web of Science database, the literature search range is from January 1, 2011, to December 31, 2022, with the language specified as English and document type set to Article. Visual analysis was used to analyze literature in the field of exercise interventions for KOA, with KOA and exercise interventions as the key search terms. Visualization maps for countries/regions were created using Tableau and Scimago Graphica software. Institutional, author, and keyword visualization maps were drawn using CiteSpace and VOSviewer software. In total, 3137 articles were included in the visual analysis. The United States emerged as the leading country in terms of publication volume and contribution. Moreover, developed countries such as the United States, Australia, United Kingdom, and Canada have established close and stable cooperative relationships. The University of Melbourne stood out as the institution with both the highest publication volume and centrality. At the forefront of research output in this field was Bennell K.L. from the University of Melbourne. The journal with the highest co-citation frequency was Osteoarthritis and Cartilage. The keyword clustering map highlighted an evolution in the field of exercise interventions for KOA, emphasizing 8 key research themes spanning knee osteoarthritis, serum cartilage, osteoarthritis initiative, patellofemoral pain, total knee arthroplasty, exercise-induced hypoalgesia, isometric exercise, and anterior cruciate ligament reconstruction. Burst analysis revealed that older adult was the earliest and most prominent keyword, with contemporary topics such as patellofemoral pain, safety, musculoskeletal disorder, and neuromuscular exercise considered as research hotspots and future directions in this field. The global attention on exercise interventions for KOA research is expanding, emphasizing the importance of strengthened connections among developing countries and collaborative author groups. Recent trends have shifted toward topics such as neuromuscular training, treatment safety, and musculoskeletal disorders, whereas research interest in patellofemoral pain remains unabated. Neuromuscular training for KOA represents the current frontier in this field. Future research should delve into the effects of diverse types of exercise interventions for KOA on neuromuscular injury and recovery, exploring feasibility and safety to formulate personalized exercise plans for patients with KOA. [ABSTRACT FROM AUTHOR]

Ionic polymer-metal composites (IPMCs), a kind of electroactive polymer, have been considered as artificial muscle due to their deformation in response to electrical stimulation. However, the needing of external power supply severely limits IPMC's wide applications. Herein, newly developed energy harvesting technique of triboelectric nanogenerator (TENG) is used to directly drive IPMC, in order to establish a self-powered actuation system. Even though IPMC cannot utilize the voltage signal from TENG, it is possible for IPMC to accumulate the transferred charge from several motion cycles of TENG. Hence, the combined TENG-IPMC system also develops a new approach for utilizing the current signal from TENG as the control signal. Comparing with IPMC under the drive of power source, TENG-IPMC system needs much lower (about 0.1%) transferred charges to achieve the same bending angle than that of DC power. The actuation of TENG-IPMC system can be controlled precisely through the design of TENG, which can be utilized for several intelligent electromechanical applications, including self-powered gripper, tunable laser projector, and soft robotic in liquid. The TENG-IPMC system has many advantages, such as high energy conversion rate, small size, and low cost, which will significantly improve the usability and portability of IPMC. Image 1 • Triboelectric nanogenerator (TENG) is used to drive ionic polymer-metal composites (IPMCs). • The TENG-IPMC system used current signal from TENG as the control signal. • Comparing with DC power, TENG-IMPC needs only 0.1% of the transferred charges to achieve the same bending angle. • The TENG-IMPC system will significantly improve the usability and portability of IPMC. [ABSTRACT FROM AUTHOR]

The performance improvement of triboelectric nanogenerator (TENG) has always been an important issue. Herein, we report a surface modification method based on P(VDF-TrFE) deposited Langmuir monolayer to regulate the output performance of TENG. For the TENG using ITO electrode and polyethylene terephthalate (PET) film as the tribo-materials, the polarity of output voltage can be reversed by depositing a P(VDF-TrFE) monolayer on the surface of ITO. By using Kelvin probe measurement, we found that the dipole moment of monolayer can increase effective work function of ITO and the homogeneity of the monolayer in micro scale can also influence the performance of TENG. Through energy band diagram, the physical mechanism of charge transfer during contact electrification and the contribution of dipole monolayer to the electrification process are systematically illustrated. Moreover, the monolayer deposited on ITO electrode can capture electrostatic charges during corona polarization, which can further improve the output performance of TENG for more than 15 times. The surface modification methods introduced here can offer a simple but effective way to modulate the output performance of TENG, and our related physical analysis also helps to clarify the mechanism of contact electrification. Through modification of P(VDF-TrFE) Langmuir monolayers on ITO electrode, the effective work function of ITO is improved, and the output voltage polarity of TENG using ITO electrode and PET film as the tribo-materials is reversed. Consequently, the contribution and mechanism of dipole monolayer in contact electrification is explained and analyzed by employing energy band diagram. It is also found that Corona polarization can improve the output performance of TENG for more than 15 times. Image 1 • The Langmuir-Blodgett (LB) monolayer has been employed to regulate the electrification performance of TENG. • The polarity of output voltage from TENG can be reversed by depositing monolayers on the contact interface. • In-depth analysis in energy band diagram changed by Langmuir monolayers is proposed from the view of work functions. • Deposited LB monolayer can capture the injected charges during corona polarization, further improving the output of TENG. [ABSTRACT FROM AUTHOR]

Nanodevices for multimodal tumor theranostics have shown great potentials for noninvasive tumor diagnosis and therapy, but the libraries of multimodal theranostic building blocks should be further stretched. In this work, Cu(II) ions are doped into polyaniline (Pani) nanoshuttles (NSs) to produce Cu-doped Pani (CuPani) NSs, which are demonstrated as new multimodal building blocks to perform tumor theranostics. The CuPani NSs are capable of shortening the longitudinal relaxation (T 1 ) of protons under magnetic fields and can help light up tumors in T 1 -weighted magnetic resonance imaging. In addition, the released Cu(II) ions from CuPani NSs lead to cytotoxicity, showing the behavior of chemotherapeutic agent. The good photothermal performance of CuPani NSs also makes them as photothermal agents to perform thermochemotherapy. By combining near-infrared laser irradiation, a complete tumor ablation is achieved and no tumor recurrence is observed. [ABSTRACT FROM AUTHOR]

[Display omitted] • Ru-supported biochars from different biomass waste were developed. • Ru/BABC from bamboo waste exhibited the best catalysis in the conversion of lignin. • Reaction pathways for the conversions of three model compounds were established. • DFT calculation and kinetic adsorption tests identified the superiority of Ru/BABC. • Ru/BABC was successfully applied in the decomposition of raw lignin. Selective transformation of lignin and its model compound is an efficient process for the valorization of lignin to valuable biofuels and chemicals. Here a series of Ru-loaded biochar (BC) catalysts from different biomass waste were developed and applied for the hydrolygenolysis of three lignin model compounds and alkaline-treated lignin, providing both maximum sustainability and economical profitability. The BC from bamboo waste with Ru loading (designated as Ru/BABC) was found to exhibit superior catalytic performance among all the carbon catalysts, giving complete conversion of model compounds and selectivities of 80.8 %, 86.0 %, 88.8 % of monocyclic products from diphenyl ether (DPE), benzyl phenyl ether (BPE) and phenethoxybenzene (PPE) respectively. Ru/BABC also exhibited excellent stability as evidenced by the 5-time recycling experiment with minimum Ru leaching. The reaction pathways for the hydrogenolysis of three model compounds were established to reveal the catalytic mechanisms of Ru/BABC and their promotions on the product selectivity. The superiority of Ru/BABC is supposed to result from its excellent porosity, a diversity of functional groups on the support and extremely high adsorption energies for the reactants which are revealed by DFT calculations. This work aims to provide some guidance for the development of BC catalysts from biomass waste, and to shed some clues on the catalytic transformation of lignin into value-added products. [ABSTRACT FROM AUTHOR]

Abstract Making composites of low-dimension oxides and carbons is one of the most effective strategies towards better energy storage materials. Among various carbons, biomass derived carbons with many distinguishing features show great advantages. We report herein a highly ordered mollusc-shell derived 3D carbon networks (MSDCN) for high-performance composite electrode materials. When Ni(OH) 2 is chosen as a conjoined component, the obtained Ni(OH) 2 /MSDCN composite exhibits a high specific capacity of 81 mAh g−1 at a high current density of 30 A g−1, and shows no obvious capacity fading during long life cycling at 6 A g−1. Symmetric solid-state energy storage devices based on Ni(OH) 2 /MSDCN are also assembled, which demonstrates a high energy density of 10.7 W h kg−1 at a power density of 0.51 KW kg−1 with good cycling stability over 10000 cycles. Red light-emitting diode (LED, 2 V) can be easily lightened by the prepared solid-state devices. Meanwhile, the successful synthesis of Co 3 O 4 nanocube/MSDCN and MnO 2 nanowire/MSDCN composites further reveal the high application potential of the MSDCN for high performance energy storage devices. Highlights • 3D carbon network (MSDCN) are prepared from mollusc shells. • Solid-state device based on the prepared hybrid Ni(OH) 2 /MSDCN exhibits good electrochemical property. • The proposed MSDCN can be a common substrate for high-performance metal oxides/carbon hybrid electrodes. [ABSTRACT FROM AUTHOR]

A corrosion, wear and synergism behaviors between them of the high-entropy alloys (HEAs) FeCrNiCo(I-0), FeCrNiCoAl(I-Al) and FeCrNiCoMo (I-Mo) in artificial seawater were studied quantitatively. The I-Al has small coefficient of friction and large wear rate because the Al dissolve preferentially. The wear rate of I-Mo is the smallest for the wear debris containing molybdate fills in the corrosion pits where the FCC phase is corroded firstly. The wear is main cause of the tribocorrosion compared with the corrosion. The corrosion rate increases due to the wear is 100 times larger than the wear rate increases due to the corrosion. [Display omitted] • Effect mechanism of elements Al and Mo on the tribocorrosion in seawater were revealed. • Two tribocorrosion stage were put foreword, and the evolvement mechanisms are analyzed. • The main factors of leading to the tribocorrosion and synergism were identified. [ABSTRACT FROM AUTHOR]