High-performance and low-cost photocatalysts play the key role in achieving the large-scale solar hydrogen production. In this work, we report a liquid-exfoliation approach to prepare NiPS₃ ultrathin nanosheets as a versatile platform to greatly improve the light-induced hydrogen production on various photocatalysts, including TiO₂, CdS, In₂ZnS₄ and C₃N₄. The superb visible-light-induced hydrogen production rate (13,600 μmol h⁻¹ g⁻¹) is achieved on NiPS₃/CdS hetero-junction with the highest improvement factor (~1,667%) compared with that of pure CdS. This significantly better performance is attributed to the strongly correlated NiPS₃/CdS interface assuring efficient electron-hole dissociation/transport, as well as abundant atomic-level edge P/S sites and activated basal S sites on NiPS₃ ultrathin nanosheets advancing hydrogen evolution. These findings are revealed by the state-of-art characterizations and theoretical computations. Our work for the first time demonstrates the great potential of metal phosphorous chalcogenide as a general platform to tremendously raise the performance of different photocatalysts.

高性能、低成本的光催化剂在实现大规模太阳能制氢中发挥着关键作用。在这项工作中，我们报告了一种制备NiPS ₃超薄纳米片的液体剥离方法，作为一个多功能平台，可以大大提高各种光催化剂（包括TiO ₂ 、CdS、In ₂ ZnS ₄和C ₃ N ₄ ）的光诱导氢产量。 NiPS ₃ /CdS 异质结实现了卓越的可见光诱导产氢速率（13,600 μmol h ⁻¹ g ⁻¹ ），与纯 CdS 相比具有最高的改进因子（~1,667%）。这种显着更好的性能归因于强相关的 NiPS ₃ /CdS 界面，确保有效的电子空穴离解/传输，以及 NiPS ₃超薄纳米片上丰富的原子级边缘 P/S 位点和激活的基础 S 位点，促进析氢。这些发现是通过最先进的表征和理论计算揭示的。我们的工作首次证明了金属磷硫属化物作为通用平台的巨大潜力，可以极大地提高不同光催化剂的性能。