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<p>Hydrogen production from solar energy using photoelectrochemical (PEC) water-splitting holds great potential for sustainable energy applications. The utilization of durable, cost-effective, and highly active photoelectrodes is essential for advanced PEC technology. PEC cells perform better in splitting water when transition metal-based electrocatalysts are added as cocatalysts. This review aims to provide an in-depth examination of the latest advancements in the synthesis, characterization, and application of transition-metal-based electrocatalysts for photoelectrochemical (PEC) water-splitting. Transition metal-based electrocatalysts are prioritized for the hydrogen evolution process generated via PEC water-splitting processes. In this review, we explain the PEC hydrogen evolution reaction (HER) methods on semiconductor surfaces and the development of various semiconductor materials through a heterostructure design strategies. The depletion layer formed in the semiconductors after heterostructure formation enhances the structural and electronic properties of PEC-HER activity. The review is anticipated to emphasize the importance of PEC processes and semiconductor design for HER and to enlighten readers from various sectors.</p>

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Advances in design principles of nanostructured heterojunction catalysts for photoelectrochemical hydrogen evolution reactions: a mini-review

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Dae-Kyo Oh,
  • Sangmin Ha,
  • Yoongu Lim,
  • Dae Jun Moon,
  • Gyoung Hwa Jeong,
  • Tae-Yong An,
  • Juhwang Kim,
  • Subramani Surendran,
  • Xiaoyan Lu,
  • Heechae Choi,
  • Gibum Kwon,
  • Young-Hoon Yun,
  • Uk Sim

摘要

Hydrogen production from solar energy using photoelectrochemical (PEC) water-splitting holds great potential for sustainable energy applications. The utilization of durable, cost-effective, and highly active photoelectrodes is essential for advanced PEC technology. PEC cells perform better in splitting water when transition metal-based electrocatalysts are added as cocatalysts. This review aims to provide an in-depth examination of the latest advancements in the synthesis, characterization, and application of transition-metal-based electrocatalysts for photoelectrochemical (PEC) water-splitting. Transition metal-based electrocatalysts are prioritized for the hydrogen evolution process generated via PEC water-splitting processes. In this review, we explain the PEC hydrogen evolution reaction (HER) methods on semiconductor surfaces and the development of various semiconductor materials through a heterostructure design strategies. The depletion layer formed in the semiconductors after heterostructure formation enhances the structural and electronic properties of PEC-HER activity. The review is anticipated to emphasize the importance of PEC processes and semiconductor design for HER and to enlighten readers from various sectors.