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<p>The metal-organic framework with ZnCo<sub>2</sub>O<sub>4</sub> combined (MOF-5@ZnCo<sub>2</sub>O<sub>4</sub>) composite is presented in this study as a flexible and state-of-the-art basis for sophisticated waste water treatment, hydrogen evolution reaction (HER) and supercapacitor devices. The impact of ZnCo<sub>2</sub>O<sub>4</sub> doping on MOF-5 structure, which enhances stability and photo/electrochemical performance, is highlighted in this work. MOF-5@ZnCo<sub>2</sub>O<sub>4</sub> is prepared by a simple solution combustion and solvothermal synthesis method and well characterised by various spectroscopic techniques. The MOF-5@ZnCo<sub>2</sub>O<sub>4</sub> composite exhibits pseudo first order reaction kinetics and 98% degradation capacity observed for crystal violet dye. The composite MOF-5@ZnCo<sub>2</sub>O<sub>4</sub> demonstrated a Tafel slope of 125 mV/dec in an acidic solution and a minimal overpotential of 358 mV for HER applications. Additionally, at 10&#xa0;mA/cm<sup>2</sup>, it remains constant for 12&#xa0;h. Furthermore, we conducted research on MOF-5@ZnCo<sub>2</sub>O<sub>4</sub> composite for supercapacitors. Its specific capacitance is 33&#xa0;F/g at a current density of 2 A/g. Our results put this composite at the forefront by showing enhanced performance and adaptability in addressing the challenges of energy and constantly shifting environment.</p> Graphical Abstract <p></p>

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Multifunctional MOF-5@ZnCo2O4 Composite for Photocatalytic Dye Degradation of Crystal Violet Dye and Electrocatalytic Applications: Hydrogen Evolution Reaction and Supercapacitor Studies

  • 期刊论文

  • 发表日期：

    2025年10月14日

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  • Savitha Hosamane,
  • Nagaraju Kottam,
  • Aishwarya Chalil Suresh,
  • Mallappa Mahanthappa,
  • Mohd Afzal

摘要

The metal-organic framework with ZnCo2O4 combined (MOF-5@ZnCo2O4) composite is presented in this study as a flexible and state-of-the-art basis for sophisticated waste water treatment, hydrogen evolution reaction (HER) and supercapacitor devices. The impact of ZnCo2O4 doping on MOF-5 structure, which enhances stability and photo/electrochemical performance, is highlighted in this work. MOF-5@ZnCo2O4 is prepared by a simple solution combustion and solvothermal synthesis method and well characterised by various spectroscopic techniques. The MOF-5@ZnCo2O4 composite exhibits pseudo first order reaction kinetics and 98% degradation capacity observed for crystal violet dye. The composite MOF-5@ZnCo2O4 demonstrated a Tafel slope of 125 mV/dec in an acidic solution and a minimal overpotential of 358 mV for HER applications. Additionally, at 10 mA/cm2, it remains constant for 12 h. Furthermore, we conducted research on MOF-5@ZnCo2O4 composite for supercapacitors. Its specific capacitance is 33 F/g at a current density of 2 A/g. Our results put this composite at the forefront by showing enhanced performance and adaptability in addressing the challenges of energy and constantly shifting environment.

Graphical Abstract