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<p>The demand for multifunctional materials has grown significantly in recent years to address pressing challenges, such as energy storage and wastewater treatment. Among the major sources of water pollution are toxic effluents from textile industries, necessitating the development of efficient photocatalytic materials capable of degrading organic pollutants. Transition Metal Oxides (TMOs), known for their excellent electrochemical activity, environmental compatibility, and chemical stability, have emerged as promising candidates for both photocatalysis and energy storage applications. This study focuses on the multifunctional potential of tungsten trioxide (WO<sub>3</sub>) nanostructures, highlighting their effectiveness in photocatalytic degradation of organic contaminants and their applicability in energy storage systems. Monoclinic WO<sub>3</sub> nanoparticles were synthesized using a simple co-precipitation method and characterized by X-ray diffraction (XRD). The presence of tensile strain in the crystal lattice was confirmed by the positive tensile strain value (0.268) derived from Williamson–Hall (WH) plot analysis. Scanning electron microscopy (SEM) analysis revealed ovoid-shaped nanoparticles. The photocatalytic activity of WO<sub>3</sub> nanoparticles was assessed through methylene blue (MB)&#xa0;dye degradation under sunlight irradiation demonstrated 60% degradation within 220&#xa0;min. The photocatalytic degradation of MB dye follows the first-order degradation with rate constant, <i>k</i> = 0.00361&#xa0;min<sup>−1</sup>. The electrochemical performance is studied using a three-electrode assembly by examining the cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) analysis. The fabricated electrode exhibited a specific capacitance of 144.35&#xa0;F/g at a current density of 2&#xa0;A/g. These results revealed the efficiency of WO<sub>3</sub>&#xa0;nanostructure as an effective electrode material for energy storage systems.</p>

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Photocatalytic, electrochemical performance and charge storage mechanism of WO3 synthesized by chemical co-precipitation method

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Sandra P. Nair,
  • D. A. Nayana,
  • Nithya S. George,
  • S. Nandakumar,
  • S. Athira,
  • Lolly Mariya Jose,
  • Aruna Joseph,
  • Javeesh Alex,
  • P. K. Manoj,
  • D. Sajan

摘要

The demand for multifunctional materials has grown significantly in recent years to address pressing challenges, such as energy storage and wastewater treatment. Among the major sources of water pollution are toxic effluents from textile industries, necessitating the development of efficient photocatalytic materials capable of degrading organic pollutants. Transition Metal Oxides (TMOs), known for their excellent electrochemical activity, environmental compatibility, and chemical stability, have emerged as promising candidates for both photocatalysis and energy storage applications. This study focuses on the multifunctional potential of tungsten trioxide (WO3) nanostructures, highlighting their effectiveness in photocatalytic degradation of organic contaminants and their applicability in energy storage systems. Monoclinic WO3 nanoparticles were synthesized using a simple co-precipitation method and characterized by X-ray diffraction (XRD). The presence of tensile strain in the crystal lattice was confirmed by the positive tensile strain value (0.268) derived from Williamson–Hall (WH) plot analysis. Scanning electron microscopy (SEM) analysis revealed ovoid-shaped nanoparticles. The photocatalytic activity of WO3 nanoparticles was assessed through methylene blue (MB) dye degradation under sunlight irradiation demonstrated 60% degradation within 220 min. The photocatalytic degradation of MB dye follows the first-order degradation with rate constant, k = 0.00361 min−1. The electrochemical performance is studied using a three-electrode assembly by examining the cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) analysis. The fabricated electrode exhibited a specific capacitance of 144.35 F/g at a current density of 2 A/g. These results revealed the efficiency of WO3 nanostructure as an effective electrode material for energy storage systems.