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<p>This study presents a simple and effective bio-templated synthesis method for fabricating zinc ferrite (ZnFe₂O₄) nanofiber photoelectrodes, designed to enhance photoelectrochemical (PEC) activity across different electrolytes. Utilizing kapok fiber as a bio-template, a nanofibril-structured catalyst was synthesized and deposited onto fluorine-doped tin oxide (FTO) substrates via electrophoretic deposition, resulting in thin film photoelectrodes. Comprehensive analytical and spectroscopy techniques, including FESEM, EDX, XRD, ATR-FTIR, UV–Vis, BET, and XPS, confirmed the purity and physiochemical properties of the synthesized sample. PEC measurements reveal that the ZnFe₂O₄ nanofiber photoelectrode achieves significant current densities in different electrolytes, with KOH showing the highest performance followed by Na₂SO₄, Na₂SO₃, and NaOH, respectively, at 0.5&#xa0;M and 0.7&#xa0;V vs. Ag/AgCl. The preparation of the bio-mimetic ZnFe₂O₄ nanofiber photocatalyst proves to be a facile, cost-effective, and promising photoanode material for PEC applications, contributing significantly to the advancement of environmentally friendly and efficient energy conversion technologies.</p>

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Bio-mimetic ZnFe₂O₄ nanofibril photocatalysts for photoelectrochemical applications: role of electrolyte

  • 期刊论文

  • 发表日期：

    2025年2月21日

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  • Mohd Faizal Md Nasir,
  • Mohd Nur Ikhmal Salehmin,
  • Mohamad Hafiz Mamat,
  • Mohammad B. Kassim,
  • Salman A. H. Alrokayan,
  • Haseeb A. Khan,
  • Tajamul Hussain,
  • Mohamad Rusop Mahmood

摘要

This study presents a simple and effective bio-templated synthesis method for fabricating zinc ferrite (ZnFe₂O₄) nanofiber photoelectrodes, designed to enhance photoelectrochemical (PEC) activity across different electrolytes. Utilizing kapok fiber as a bio-template, a nanofibril-structured catalyst was synthesized and deposited onto fluorine-doped tin oxide (FTO) substrates via electrophoretic deposition, resulting in thin film photoelectrodes. Comprehensive analytical and spectroscopy techniques, including FESEM, EDX, XRD, ATR-FTIR, UV–Vis, BET, and XPS, confirmed the purity and physiochemical properties of the synthesized sample. PEC measurements reveal that the ZnFe₂O₄ nanofiber photoelectrode achieves significant current densities in different electrolytes, with KOH showing the highest performance followed by Na₂SO₄, Na₂SO₃, and NaOH, respectively, at 0.5 M and 0.7 V vs. Ag/AgCl. The preparation of the bio-mimetic ZnFe₂O₄ nanofiber photocatalyst proves to be a facile, cost-effective, and promising photoanode material for PEC applications, contributing significantly to the advancement of environmentally friendly and efficient energy conversion technologies.