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<p>In this study, ZnFe<sub>2</sub>O<sub>4</sub> (ZFO), Pd<sub>0.2</sub>Zn<sub>0.8</sub>Fe<sub>2</sub>O<sub>4</sub> (PZFO), Ba<sub>0.1</sub>Ca<sub>0.1</sub>Mg<sub>0.1</sub>Sr<sub>0.1</sub>Zn<sub>0.6</sub>Fe<sub>2</sub>O<sub>4</sub> (BCMSZFO), Ca<sub>0.2</sub>Co<sub>0.2</sub>Cu<sub>0.2</sub>Zn<sub>0.4</sub>Fe<sub>2</sub>O<sub>4</sub> (CCCZFO), Mg<sub>0.2</sub>Mn<sub>0.2</sub>Zn<sub>0.6</sub>Fe<sub>2</sub>O<sub>4</sub> (MMZFO), and Co<sub>0.1</sub>Cu<sub>0.1</sub>Mg<sub>0.1</sub>Mn<sub>0.1</sub>Ni<sub>0.1</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> (CCMMNZFO) nanospinels were synthesized via a hydrothermal method assisted by succinic acid. This material was evaluated for hydrogen production through photocatalytic water splitting under separate irradiation wavelengths of visible LED light. The chemical, physical, and photophysical properties of the ZFO family nanophotocatalysts were characterized using FT-IR, XRD, FESEM-EDX-MAP, UV–Vis DRS, and VSM. All synthesized nanospinels exhibited a pure spinel phase with no evidence of secondary crystalline phase. The direct band gap energies of ZFO, PZFO, BCMSZFO, CCCZFO, MMZFO, and CCMMNZFO were determined as 1.75, 1.51, 1.73, 1.50, 1.48, and 1.25&#xa0;eV, respectively. Photocatalytic water splitting experiments were conducted under N₂ injection using a setup with operational parameters of 5&#xa0;min irradiation time and 1&#xa0;g of nanophotocatalyst mass. The hydrogen production rates of the nanophotocatalysts under identical conditions revealed significant differences, forming the basis for further investigations in this study.</p>

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Development of ZFO family nanophotocatalysts: Clean hydrogen production by a new high performance photoreactor

  • 期刊论文

  • 发表日期：

    2025年3月5日

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  • Hossein Zare Khafri,
  • Mehrorang Ghaedi,
  • Shaaker Hajati,
  • Hadi Heidari,
  • Arash Asfaram

摘要

In this study, ZnFe2O4 (ZFO), Pd0.2Zn0.8Fe2O4 (PZFO), Ba0.1Ca0.1Mg0.1Sr0.1Zn0.6Fe2O4 (BCMSZFO), Ca0.2Co0.2Cu0.2Zn0.4Fe2O4 (CCCZFO), Mg0.2Mn0.2Zn0.6Fe2O4 (MMZFO), and Co0.1Cu0.1Mg0.1Mn0.1Ni0.1Zn0.5Fe2O4 (CCMMNZFO) nanospinels were synthesized via a hydrothermal method assisted by succinic acid. This material was evaluated for hydrogen production through photocatalytic water splitting under separate irradiation wavelengths of visible LED light. The chemical, physical, and photophysical properties of the ZFO family nanophotocatalysts were characterized using FT-IR, XRD, FESEM-EDX-MAP, UV–Vis DRS, and VSM. All synthesized nanospinels exhibited a pure spinel phase with no evidence of secondary crystalline phase. The direct band gap energies of ZFO, PZFO, BCMSZFO, CCCZFO, MMZFO, and CCMMNZFO were determined as 1.75, 1.51, 1.73, 1.50, 1.48, and 1.25 eV, respectively. Photocatalytic water splitting experiments were conducted under N₂ injection using a setup with operational parameters of 5 min irradiation time and 1 g of nanophotocatalyst mass. The hydrogen production rates of the nanophotocatalysts under identical conditions revealed significant differences, forming the basis for further investigations in this study.