Ran Jingrun, Zhang Hongping, Fu Sijia, Jaroniec Mietek, Shan Jieqiong, Xia Bingquan, Qu Yang, Qu Jiangtao, Chen Shuangming, Song Li, Cairney Julie M, Jing Liqiang, Qiao Shi-Zhang
School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia.
State Key Laboratory of Environmentally Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Science and Engineering, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China.
Nat Commun. 2022 Aug 6;13(1):4600. doi: 10.1038/s41467-022-32256-6.
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 NiPS ultrathin nanosheets as a versatile platform to greatly improve the light-induced hydrogen production on various photocatalysts, including TiO, CdS, InZnS and CN. The superb visible-light-induced hydrogen production rate (13,600 μmol h g) is achieved on NiPS/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 NiPS/CdS interface assuring efficient electron-hole dissociation/transport, as well as abundant atomic-level edge P/S sites and activated basal S sites on NiPS 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.
高性能且低成本的光催化剂在实现大规模太阳能制氢方面起着关键作用。在本工作中，我们报道了一种液相剥离方法来制备NiPS超薄纳米片，作为一个通用平台，可极大地提高包括TiO、CdS、InZnS和CN在内的各种光催化剂上的光致产氢性能。在NiPS/CdS异质结上实现了出色的可见光致产氢速率（13,600 μmol h g），与纯CdS相比，具有最高的改善因子（约1,667%）。这种显著更好的性能归因于强相关的NiPS/CdS界面确保了高效的电子 - 空穴解离/传输，以及NiPS超薄纳米片上丰富的原子级边缘P/S位点和活化的基面S位点促进了析氢反应。这些发现通过先进的表征和理论计算得以揭示。我们的工作首次证明了金属磷硫属化合物作为一个通用平台在极大提高不同光催化剂性能方面的巨大潜力。
