Chen Jianing, Xue Fei, Peng Huiping, Pao Chih-Wen, Huang Wei-Hsiang, Hu Zhiwei, Xu Yong, Huang Xiaoqing
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
i-lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), 398 Ruoshui Road, Suzhou 215123, China.
Langmuir. 2025 Jan 14;41(1):1149-1156. doi: 10.1021/acs.langmuir.4c04500. Epub 2025 Jan 2.
Oxygen and water generating hydrogen peroxide (HO) by optical drive is an extremely promising pathway, and the large amount of oxygen in air and natural sunlight illumination are excellent catalytic conditions. However, the separation efficiency of photogenerated electron-hole pairs greatly limits the photocatalytic efficiency, especially in the absence of sacrificial agents. Here, we report an InS nanosheet with an S vacancy (S-InS). The highest HO yield of S-InS is 2.585 mmol g h under pure water, air, and sunlight ( = 920 W/m), largely outperforming other reported photocatalysts for HO production. The experimental results show that the introduction of S accelerates the separation of photogenerated electron-hole pairs and achieves efficient HO production through an oxygen reduction reaction. This efficient photosynthesis under ambient conditions allows solar-chemical conversion to take place in a truly cost-effective and sustainable way, opening up possibilities for practical production.
通过光驱动使氧气和水生成过氧化氢（HO）是一条极具前景的途径，空气中大量的氧气和自然阳光照射是极佳的催化条件。然而，光生电子 - 空穴对的分离效率极大地限制了光催化效率，尤其是在没有牺牲剂的情况下。在此，我们报道了一种具有硫空位的硫化铟纳米片（S - InS）。在纯水、空气和阳光（ = 920 W/m）条件下，S - InS的最高HO产率为2.585 mmol g h，大大优于其他报道的用于HO生产的光催化剂。实验结果表明，硫空位的引入加速了光生电子 - 空穴对的分离，并通过氧还原反应实现了高效的HO生成。这种在环境条件下的高效光合作用使得太阳能 - 化学转化能够以真正具有成本效益和可持续的方式进行，为实际生产开辟了可能性。
