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<p>Fe<sub>2</sub>O<sub>3</sub>@ZnO core–shell nanoparticles were synthesized in spherical and spindle shape and their performance in rhodamine B degradation was investigated. The average diameter of nanoparticles for the spherical samples was 47 and 28&#xa0;nm, and for the spindle-shaped sample was 19&#xa0;nm. By increasing the thickness of the ZnO shell in core–shell samples, the amount of absorption increases in both regions. The amount of absorption in the spindle-shaped samples was much higher than that of the spherical samples. The optical gap for spherical nanoparticles was 2.63 and 2.79 and for spindle shaped nanoparticles it was 3.07&#xa0;eV. Finally, photocatalytic performance of Fe<sub>2</sub>O<sub>3</sub>@ZnO core–shell nanoparticles and Fe<sub>2</sub>O<sub>3</sub>–ZnO nanocomposites with ratios of (5:95), (10:90), (20:80) and (30:70) in degradation of rhodamine B (RhB) was investigated. The Fe<sub>2</sub>O<sub>3</sub>–ZnO nanocomposite (10:90) with 97% degradation of RhB in 180&#xa0;min showed much better photocatalytic performance than the other nanocomposites and core–shell nanoparticles.</p>

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Effect of interfaces in photocatalytic performance of Fe2O3@ZnO core–shell nanoparticles and Fe2O3–ZnO nanocomposites

  • 期刊论文

  • 发表日期：

    2025年1月7日

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  • Vahid Kargar Dehbidi,
  • Mansoor Farbod

摘要

Fe2O3@ZnO core–shell nanoparticles were synthesized in spherical and spindle shape and their performance in rhodamine B degradation was investigated. The average diameter of nanoparticles for the spherical samples was 47 and 28 nm, and for the spindle-shaped sample was 19 nm. By increasing the thickness of the ZnO shell in core–shell samples, the amount of absorption increases in both regions. The amount of absorption in the spindle-shaped samples was much higher than that of the spherical samples. The optical gap for spherical nanoparticles was 2.63 and 2.79 and for spindle shaped nanoparticles it was 3.07 eV. Finally, photocatalytic performance of Fe2O3@ZnO core–shell nanoparticles and Fe2O3–ZnO nanocomposites with ratios of (5:95), (10:90), (20:80) and (30:70) in degradation of rhodamine B (RhB) was investigated. The Fe2O3–ZnO nanocomposite (10:90) with 97% degradation of RhB in 180 min showed much better photocatalytic performance than the other nanocomposites and core–shell nanoparticles.