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This manuscript presents a novel method to enhance the electrochemical performance of CaMoO4 for supercapacitors by synthesizing it from a bi-metallic metal–organic framework (MOF). The resulting CaMoO4 nanoparticles retain MOF characteristics, with a high surface area, and demonstrate improved performance over conventionally synthesized CaMoO4. Electrochemical tests showed the MOF-derived CaMoO4 achieved a high capacitance of 377.82 F g−1 at 1 A g−1 and retained 91% of its capacitance after 5000 cycles. The assembled asymmetric supercapacitor also retained 88% of its capacitance after 10 000 cycles, highlighting the potential of this approach for enhancing energy storage devices. [ABSTRACT FROM AUTHOR]

This research details the successful synthesis of a CoP/MXene nanomaterial, characterized by unique rod-like structures and MXene layers. In a three-electrode system, the nanomaterial exhibits outstanding electrochemical performance, achieving a specific capacitance of 637 F g-1. When integrated into a supercapacitor device, it demonstrates highly advantageous characteristics, confirming its potential for diverse industrial applications. The device displays confirmed battery-type behavior, coupled with efficient diffusive and capacitive performance, resulting in a specific capacitance of 94.4 F g-1. Notably, the device showcases impressive energy density and power density values, measuring 29.5 W h kg-1 at 750 W kg-1, emphasizing its suitability for robust industrial applications. The rate capability is evident, as illustrated by the sustained distorted rectangular shape in the cyclic voltammetry plots at varying scan rates. [ABSTRACT FROM AUTHOR]

A metal oxide consisting of calcium and manganese (CaMn3O6) in a spherical architecture was successfully prepared by a simple hydrothermal method. Subsequently, Ipomoea carnea-derived carbon (IC) was synthesized and a nanocomposite with CaMn3O6 was formed. The pure CaMn3O6 exhibited a higher surface area of 111 m2 g−1 and CaMn3O6/IC showed a surface area of 101 m2 g−1 with enhanced pore volume, which was desirable in delivering better capacitance. The electrode materials were tested in both three-electrode and two-electrode systems in which CaMn3O6 delivered a capacitance of 294 F g−1 and CaMn3O6/IC delivered a capacitance of 414 F g−1. Furthermore, on fabricating a pouch-cell type asymmetric supercapacitor, CaMn3O6‖AC device showed a capacitance of 76 F g−1 and CaMn3O6/IC‖AC device delivered a capacitance of 116 F g−1. In addition, the CaMn3O6/IC‖AC device showed superior stability and capacitance retention, which can be associated with the presence of an IC matrix. Utilizing the CaMn3O6/IC‖AC pouch-cell device, an LED bulb was operated to test for real-time applications. [ABSTRACT FROM AUTHOR]

In this study, dye/polymer matrix-stabilized β-FeOOH nanomaterials were fabricated for therapeutic applications. Rh-B/F127@β-FeOOH nanomaterials were synthesized using two different methods: co-precipitation (CoP) and hydrothermal (HT) methods. The as-synthesized nanoparticles were characterized using various spectroscopic techniques, including FT-IR, UV-Vis, PL, XRD, HR-TEM, and XPS analysis. The functional groups and optical properties were confirmed by FT-IR spectroscopy, UV-Vis and fluorescence spectroscopy. The Rh-B/F127@β-FeOOH nanomaterials exhibited both rod-like and sphere-like morphology, as confirmed by HR-TEM analysis. Unlike the nanorods, the nanospheres produced multi-colored emissions at 407, 446, 482 and 520 nm. The oxidative states and elements were confirmed by XPS spectroscopy. MTT assays were used to analyze the cytotoxicity of the nanospheres against A549 cells. The reactive oxygen species (ROS) generation and apoptotic cell death caused by the β-FeOOH nanospheres were evaluated by flow cytometry. Cell cycle analysis indicated that the treatment of nanospheres-induced S-phase cell cycle arrest in A549 cells. The synthesized nanospheres induced late-stage apoptosis in the A549 cell line, with a cell death rate of up to 30.37% at the IC 50 concentration. Additionally, the antioxidant activities of the synthesized nanorods showed a high scavenging activity against free radicals, as examined by different assays such as such as DPPH, RP, and FRAP. The above results suggest that the synthesized nanorods and nanospheres are promising and efficient material for therapeutic applications., Competing Interests: We declare that we have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (This journal is © The Royal Society of Chemistry.)