期刊
CERAMICS INTERNATIONAL
卷 47, 期 15, 页码 21769-21776出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.04.192
关键词
Ultra-small photocatalyst; Large-sized cocatalyst; Design strategy; Photocatalytic water splitting
资金
- Basic Science Center Program for Multiphase Evolution in Hypergravity of the National Natural Science Foundation of China [51988101]
- National Science Foundation of China [11874001]
- Natural Science Foundation of Beijing, China [2182008]
- Beijing Outstanding Young Scientists Projects [BJJWZYJH0120191000-5018]
A new design strategy was proposed in this study to anchor small-sized TiO2 photocatalysts onto large-sized Ti3C2-Mxene cocatalysts for efficient charge separation, resulting in a significantly higher hydrogen production rate. This strategy demonstrates the feasibility of designing novel photocatalytic systems with superior properties.
The common strategy for the design of photocatalytic materials is to load small-sized cocatalysts onto large-sized photocatalysts for efficient charge separation. In this study, a new design strategy is presented to anchor smallsized TiO2 photocatalysts onto large-sized Ti3C2-Mxene cocatalysts, which can provide enriched active sites to receive photo-generated electrons, thus achieving fast charge separation. Based on this strategy, the 4h-hydrogen production rate of the optimized photocatalytic system (62.5 mu mol) is 15.2 times higher than that of pure TiO2 (4.1 mu mol), strongly demonstrating the feasibility of our design strategy. The strategy here presents an effective way to design novel photocatalytic systems with superior photocatalytic properties.
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