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<p>By using a solvothermal preparation process, a multi-walled carbon nanotube photocatalyst (Sm<sub>2</sub>O<sub>3</sub>/MWCNT) was synthesises, which improved the photocatalytic efficiency of samarium oxide (Sm<sub>2</sub>O<sub>3</sub>) and revealed its catalytic mechanism. The crystalline phase and morphological structure of Sm<sub>2</sub>O<sub>3</sub>/MWCNTs were observed using X-ray powder diffraction spectroscopy (XRD), Raman spectra, Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) revealed that the modification by MWCNTs resulted in modifications in functional groups on the surface and a binding energy shift of Sm and O. The catalytic performance of Sm<sub>2</sub>O<sub>3</sub>/MWCNT was enhanced in all of the characterisations. The Sm<sub>2</sub>O<sub>3</sub>/MWCNT-catalysed degradation routes of Orange G and Hydroquinone dyes were investigated as the target trace persistent pollutant. Throughout the end, preliminary studies were conducted to ascertain the extent to which pH, catalyst dosage, beginning dye concentration, and electrolytes affected catalyst efficiency in the process of dye degradation. Research on the reusability of the catalyst showed that it retained its original efficiency even after the third cycle of reuse.</p> Graphical Abstract <p></p>

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A Novel Sm2O3 / MWCNT Nanocomposite as a Photocatalytic Application Against Orange G and Hydroquinone Pollutants

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • A. Kistan,
  • G. Raja,
  • R. Venkatesh,
  • A. S. Prakaash

摘要

By using a solvothermal preparation process, a multi-walled carbon nanotube photocatalyst (Sm2O3/MWCNT) was synthesises, which improved the photocatalytic efficiency of samarium oxide (Sm2O3) and revealed its catalytic mechanism. The crystalline phase and morphological structure of Sm2O3/MWCNTs were observed using X-ray powder diffraction spectroscopy (XRD), Raman spectra, Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) revealed that the modification by MWCNTs resulted in modifications in functional groups on the surface and a binding energy shift of Sm and O. The catalytic performance of Sm2O3/MWCNT was enhanced in all of the characterisations. The Sm2O3/MWCNT-catalysed degradation routes of Orange G and Hydroquinone dyes were investigated as the target trace persistent pollutant. Throughout the end, preliminary studies were conducted to ascertain the extent to which pH, catalyst dosage, beginning dye concentration, and electrolytes affected catalyst efficiency in the process of dye degradation. Research on the reusability of the catalyst showed that it retained its original efficiency even after the third cycle of reuse.

Graphical Abstract