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<p>Addressing electron and gas transfer dynamics is pivotal for photocatalytic hydrogen evolution. In this work, a hydrophilic NiCo<sub>2</sub>O<sub>4</sub>/CdS heterojunction was incorporated with hydrophobic SiO<sub>2</sub> to enhance photocatalytic hydrogen evolution performance. The hydrophilic/hydrophobic NiCo<sub>2</sub>O<sub>4</sub>/CdS/SiO<sub>2</sub> photocatalyst exhibited a hydrogen production rate of 11.78 mmol·g<sup>-1</sup>·h<sup>-1</sup>, outperforming the 8.15 mmol·g<sup>-1</sup>·h<sup>-1</sup> of NiCo<sub>2</sub>O<sub>4</sub>/CdS heterojunction. The heterojunction significantly enhances photogenerated charge-carrier separation efficiency, while the hydrophobic SiO<sub>2</sub> facilitates gas evolution by mitigating surface bubble aggregation. The work here provides a facile route for developing photocatalysts toward practical hydrogen evolution.</p>

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Local hydrophobicity enhanced hydrogen evolution over NiCo2O4/CdS photocatalyst

  • 期刊论文

  • 发表日期：

    2025年9月2日

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  • Xuan Xiang,
  • Yuyin Mao,
  • Minghui Zhang,
  • Hanxiao Wang,
  • Xiangdong Xue,
  • Jian Tian,
  • Jian Liu

摘要

Addressing electron and gas transfer dynamics is pivotal for photocatalytic hydrogen evolution. In this work, a hydrophilic NiCo2O4/CdS heterojunction was incorporated with hydrophobic SiO2 to enhance photocatalytic hydrogen evolution performance. The hydrophilic/hydrophobic NiCo2O4/CdS/SiO2 photocatalyst exhibited a hydrogen production rate of 11.78 mmol·g-1·h-1, outperforming the 8.15 mmol·g-1·h-1 of NiCo2O4/CdS heterojunction. The heterojunction significantly enhances photogenerated charge-carrier separation efficiency, while the hydrophobic SiO2 facilitates gas evolution by mitigating surface bubble aggregation. The work here provides a facile route for developing photocatalysts toward practical hydrogen evolution.