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Abstract <p>This work aimed to synthesize ZnO-doped Bi<sub>2</sub>O<sub>3</sub> [Bi<sub>2</sub>O<sub>3</sub>@(ZnO)<sub><i>x</i></sub>] nanocomposites using the chemical precipitation method under visible light for photocatalytic degradation of dyes. The X-ray diffraction (XRD) pattern confirmed the monoclinic structure of the nanocomposites with an average crystallite size of 53 nm. A small band observed at 453 cm<sup>–1</sup> indicated the Bi-O stretching mode vibration of Bi<sub>2</sub>O<sub>3</sub>. The UV-visible spectrum showed a characteristic absorption peak of Bi<sub>2</sub>O<sub>3</sub> at 420 nm. The transmission electron microscope (TEM) revealed the distribution of ZnO on the surface of Bi<sub>2</sub>O<sub>3</sub>. Methylene blue (MB) and Crystal violet (CV) dye degradation efficiency of the Bi<sub>2</sub>O<sub>3</sub>@(ZnO)<sub><i>x</i></sub> nanocomposites showed 91.90% of MB dye degradation and 89.60% of CV dye degradation at 135 min. Therefore, Bi<sub>2</sub>O<sub>3</sub>@(ZnO)<sub><i>x</i></sub> nanocomposites can be used as a photocatalyst for the MB and CV degradation of contaminated water.</p>

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Surpassingly Expeditious and Economical Bi2O3@(ZnO)x Nanocomposite for Visible Light-induced Industrial Dyes Photocatalytic Degradation

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Paramasivam Sumathi,
  • Renu Rammohan,
  • Manikandan Ayyar,
  • Govindasami Periyasami,
  • Ramasamy Subramanian,
  • Madhappan Santhamoorthy

摘要

Abstract

This work aimed to synthesize ZnO-doped Bi2O3 [Bi2O3@(ZnO)x] nanocomposites using the chemical precipitation method under visible light for photocatalytic degradation of dyes. The X-ray diffraction (XRD) pattern confirmed the monoclinic structure of the nanocomposites with an average crystallite size of 53 nm. A small band observed at 453 cm–1 indicated the Bi-O stretching mode vibration of Bi2O3. The UV-visible spectrum showed a characteristic absorption peak of Bi2O3 at 420 nm. The transmission electron microscope (TEM) revealed the distribution of ZnO on the surface of Bi2O3. Methylene blue (MB) and Crystal violet (CV) dye degradation efficiency of the Bi2O3@(ZnO)x nanocomposites showed 91.90% of MB dye degradation and 89.60% of CV dye degradation at 135 min. Therefore, Bi2O3@(ZnO)x nanocomposites can be used as a photocatalyst for the MB and CV degradation of contaminated water.