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<p>This study describes the preparation of a Fe<sub>2</sub>O<sub>3</sub>/ZnO nanocomposite via the co-precipitation method and its calcination at 400, 600, and 800&#xa0;°C for 2&#xa0;h. The crystallite size was calculated, revealing that as the calcination temperature increased, the crystallite size of Fe<sub>2</sub>O<sub>3</sub>/ZnO nanocomposite also increased. The optical band gap energy was analyzed via UV–Vis absorption spectroscopy, which indicates that as the calcination temperature increases, the band gap of the nanocomposite materials also increases. FTIR spectroscopy confirmed the presence of Fe<sub>2</sub>O<sub>3</sub>/ZnO nanocomposites. The SEM investigations confirmed the formation of nanorods. The photocatalytic test shows that the efficiency of the materials increased from 89.55 to 93.16% for the degradation of Methylene orange when the calcination temperature was increased. The photocatalytic efficiency of the sample toward Methylene blue dye degradation increased from 91.49 to 93.50%. These findings demonstrate that the Fe<sub>2</sub>O<sub>3</sub>/ZnO nanocomposite is a reliable and ecologically friendly photocatalyst with great promise for treating wastewater in the real world.</p>

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Effect of calcination temperature on the structural, optical, and photocatalytic properties of Fe2O3/ZnO nanocomposites

  • 期刊论文

  • 发表日期：

    2026年4月23日

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  • C. Dominic Savio,
  • J. Vinoth Kumar,
  • S. Rahul,
  • B. Vigneshwaran,
  • A. Dhayal Raj,
  • Mir Waqas Alam,
  • Shima Sadaf,
  • S. John Sundaram,
  • D. Daniel Lawrence

摘要

This study describes the preparation of a Fe2O3/ZnO nanocomposite via the co-precipitation method and its calcination at 400, 600, and 800 °C for 2 h. The crystallite size was calculated, revealing that as the calcination temperature increased, the crystallite size of Fe2O3/ZnO nanocomposite also increased. The optical band gap energy was analyzed via UV–Vis absorption spectroscopy, which indicates that as the calcination temperature increases, the band gap of the nanocomposite materials also increases. FTIR spectroscopy confirmed the presence of Fe2O3/ZnO nanocomposites. The SEM investigations confirmed the formation of nanorods. The photocatalytic test shows that the efficiency of the materials increased from 89.55 to 93.16% for the degradation of Methylene orange when the calcination temperature was increased. The photocatalytic efficiency of the sample toward Methylene blue dye degradation increased from 91.49 to 93.50%. These findings demonstrate that the Fe2O3/ZnO nanocomposite is a reliable and ecologically friendly photocatalyst with great promise for treating wastewater in the real world.