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<p>CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite was synthesised via a facile hydrothermal method to generate a heterojunction with enhanced photocatalytic and electrochemical performance. The structural, morphological and physicochemical characterizations of CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite confirmed successful integration of highly crystalline CuBi<sub>2</sub>O<sub>4</sub> nanoparticles dispersed uniformly on the g-C<sub>3</sub>N<sub>4</sub> matrix. Optical studies revealed improved visible-light absorption and a tailored bandgap of 1.72&#xa0;eV for the composite, facilitating efficient charge separation. Adsorption–desorption isotherm analysis provides the surface area of 27.88 m<sup>2</sup>/g. The higher surface area and porous structure of CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite facilitate the rapid charge transfer. XPS and FTIR studies illustrates the binding characteristics of nanocomposite. SEM, TEM and elemental mapping reveals the successful formation of CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite. Electrochemical analyses demonstrated marked enhancements in current response, specific capacitance and cyclic stability with over 91.5% capacitance retention after 5000 cycles, attributed to the synergistic effect between CuBi<sub>2</sub>O<sub>4</sub> and g-C<sub>3</sub>N<sub>4</sub>. CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite shows the high specific capacitance of 1166 F/g at a current density of 1 A/g. These results highlight the CuBi<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite as a promising multifunctional material for high-performance energy storage applications.</p>

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Copper bismuth oxide nanoparticles decorated on g-C3N4 nanocomposite electrode for highly efficient supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年4月14日

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  • Thirumal Balaraman,
  • Sethuraman Venkatesan,
  • Sasikumar Raman

摘要

CuBi2O4/g-C3N4 nanocomposite was synthesised via a facile hydrothermal method to generate a heterojunction with enhanced photocatalytic and electrochemical performance. The structural, morphological and physicochemical characterizations of CuBi2O4/g-C3N4 nanocomposite confirmed successful integration of highly crystalline CuBi2O4 nanoparticles dispersed uniformly on the g-C3N4 matrix. Optical studies revealed improved visible-light absorption and a tailored bandgap of 1.72 eV for the composite, facilitating efficient charge separation. Adsorption–desorption isotherm analysis provides the surface area of 27.88 m2/g. The higher surface area and porous structure of CuBi2O4/g-C3N4 nanocomposite facilitate the rapid charge transfer. XPS and FTIR studies illustrates the binding characteristics of nanocomposite. SEM, TEM and elemental mapping reveals the successful formation of CuBi2O4/g-C3N4 nanocomposite. Electrochemical analyses demonstrated marked enhancements in current response, specific capacitance and cyclic stability with over 91.5% capacitance retention after 5000 cycles, attributed to the synergistic effect between CuBi2O4 and g-C3N4. CuBi2O4/g-C3N4 nanocomposite shows the high specific capacitance of 1166 F/g at a current density of 1 A/g. These results highlight the CuBi2O4/g-C3N4 nanocomposite as a promising multifunctional material for high-performance energy storage applications.