光催化
铂金
共价键
材料科学
制氢
催化作用
吸附
共价有机骨架
氢
亚胺
光化学
光催化分解水
化学工程
纳米技术
化学
无机化学
分解水
有机化学
工程类
作者
Yimeng Li,Li Yang,Huijie He,Lin Sun,Honglei Wang,Fang Xu,Yanliang Zhao,Daoyuan Zheng,Yu Qi,Zhen Li,Wei Deng
标识
DOI:10.1038/s41467-022-29076-z
摘要
Abstract Photocatalytic hydrogen production has been considered a promising approach to obtain green hydrogen energy. Crystalline porous materials have arisen as key photocatalysts for efficient hydrogen production. Here, we report a strategy to in situ photodeposit platinum clusters as cocatalyst on a covalent organic framework, which makes it an efficient photocatalyst for light-driven hydrogen evolution. Periodically dispersed adsorption sites of platinum species are constructed by introducing adjacent hydroxyl group and imine-N in the region of the covalent organic framework structural unit where photogenerated electrons converge, leading to the in situ reduction of the adsorbed platinum species into metal clusters by photogenerated electrons. The widespread platinum clusters on the covalent organic framework expose large active surface and greatly facilitate the electron transfer, finally contributing to a high photocatalytic hydrogen evolution rate of 42432 μmol g −1 h −1 at 1 wt% platinum loading. This work provides a direction for structural design on covalent organic frameworks to precisely manipulate cocatalyst morphologies and positions at the atomic level for developing efficient photocatalysts.
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