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<p>A novel Bi<sub>2</sub>MoO<sub>6</sub>-Bi<sub>2</sub>O<sub>3</sub>/P1HP core-shell (C-S) nanocomposite photocathode has been successfully synthesized using a two-step process, resulting in a unique mushroom-like morphology with rough, agglomerated structures (~ 200&#xa0;nm). XRD analysis confirms its nanoscale crystallite size (~ 35&#xa0;nm), while optical studies reveal broad absorption extending from the visible to infrared range, with an optimized bandgap of 1.75&#xa0;eV. The photocathode demonstrates exceptional hydrogen production efficiency when applied for H₂ generation using sanitation water as an electrolyte. A high hydrogen evolution rate of 2.5 µmol h<sup>-1</sup> cm<sup>-2</sup> is achieved, with current density (J<sub>ph</sub>) measurements confirming its strong performance under various lighting conditions. Under full-spectrum white light, J<sub>ph</sub> reaches − 0.45&#xa0;mA/cm², while at 340&#xa0;nm, it remains stable at -0.42&#xa0;mA/cm², indicating consistent activity across different wavelengths. These findings highlight the dual benefits of this nanocomposite: efficient, eco-friendly hydrogen production while repurposing wastewater. With its broad optical absorption, cost-effective fabrication, and high photocatalytic efficiency, this innovative photocathode emerges as a promising solution for sustainable hydrogen generation.</p>

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Green hydrogen generation using mushroom-like shape bismuth molybdate-bismuth oxide/poly(1 H-pyrrole) core-shell nanocomposite from sanitation water

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月12日

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  • Fatemah H. Alkallas,
  • Amira Ben Gouider Trabelsi,
  • K. S. Almugren,
  • Mohamed Rabia

摘要

A novel Bi2MoO6-Bi2O3/P1HP core-shell (C-S) nanocomposite photocathode has been successfully synthesized using a two-step process, resulting in a unique mushroom-like morphology with rough, agglomerated structures (~ 200 nm). XRD analysis confirms its nanoscale crystallite size (~ 35 nm), while optical studies reveal broad absorption extending from the visible to infrared range, with an optimized bandgap of 1.75 eV. The photocathode demonstrates exceptional hydrogen production efficiency when applied for H₂ generation using sanitation water as an electrolyte. A high hydrogen evolution rate of 2.5 µmol h-1 cm-2 is achieved, with current density (Jph) measurements confirming its strong performance under various lighting conditions. Under full-spectrum white light, Jph reaches − 0.45 mA/cm², while at 340 nm, it remains stable at -0.42 mA/cm², indicating consistent activity across different wavelengths. These findings highlight the dual benefits of this nanocomposite: efficient, eco-friendly hydrogen production while repurposing wastewater. With its broad optical absorption, cost-effective fabrication, and high photocatalytic efficiency, this innovative photocathode emerges as a promising solution for sustainable hydrogen generation.