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<p>The development of high-performance photocatalysts and electrocatalysts has rapidly emerged as one of the most dynamic and cutting-edge areas of scientific research today. This study introduces a novel, simple, eco-friendly approach to synthesize Bismuth Vanadate (BiVO<sub>4</sub>) nanoparticles (NPs) using <i>Glossocardia bosvallia</i> leaf extract as a natural fuel source for the first time. The fuel plays a crucial role in controlling the size of the NPs, with Scherrer’s analysis revealing an average Np’s (BVG3) size of 20&#xa0;nm. These NPs exhibited a band gap of approximately 2.8&#xa0;eV, indicating their activity under visible light. When exposed to visible light, the crystalline surface and optimal bandgap of the BiVO<sub>4</sub> NPs facilitated the effective degradation of methylene blue (MB). The degradation efficiency of MB dye using BiVO<sub>4</sub> NPs reached up to 98.2% within 180&#xa0;minutes. Furthermore, recycling experiments demonstrated the excellent photostability of BiVO<sub>4</sub> NPs. Additionally, BiVO<sub>4</sub> NPs exhibited remarkable bio-analyte sensing capabilities by showing distinct oxidation and reduction peaks towards paracetamol, and they also demonstrated a good response in linear sweep voltammetry studies. Electrochemical impedance spectroscopy (EIS) provided valuable insights into the ionic conductivity of a substance and the capacitive behaviour of the BiVO<sub>4</sub>-modified&#xa0;electrode.</p> Graphical abstract <p></p>

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Eco-friendly synthesis of BiVO4 nanoparticles for efficient photocatalytic degradation and electrochemical sensing

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Pushpa C. S.,
  • Lakshmi Ranganatha V.,
  • Soundarya T. L.,
  • Pramila S.,
  • Sangamesha M. A.,
  • Mallikarjunaswamy C.

摘要

The development of high-performance photocatalysts and electrocatalysts has rapidly emerged as one of the most dynamic and cutting-edge areas of scientific research today. This study introduces a novel, simple, eco-friendly approach to synthesize Bismuth Vanadate (BiVO4) nanoparticles (NPs) using Glossocardia bosvallia leaf extract as a natural fuel source for the first time. The fuel plays a crucial role in controlling the size of the NPs, with Scherrer’s analysis revealing an average Np’s (BVG3) size of 20 nm. These NPs exhibited a band gap of approximately 2.8 eV, indicating their activity under visible light. When exposed to visible light, the crystalline surface and optimal bandgap of the BiVO4 NPs facilitated the effective degradation of methylene blue (MB). The degradation efficiency of MB dye using BiVO4 NPs reached up to 98.2% within 180 minutes. Furthermore, recycling experiments demonstrated the excellent photostability of BiVO4 NPs. Additionally, BiVO4 NPs exhibited remarkable bio-analyte sensing capabilities by showing distinct oxidation and reduction peaks towards paracetamol, and they also demonstrated a good response in linear sweep voltammetry studies. Electrochemical impedance spectroscopy (EIS) provided valuable insights into the ionic conductivity of a substance and the capacitive behaviour of the BiVO4-modified electrode.

Graphical abstract