期刊
APPLIED SURFACE SCIENCE
卷 571, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.151287
关键词
0D; 2D; S-Scheme; Overall water splitting
类别
资金
- Shenzhen Key Laboratory of Solid State Batteries [ZDSYS20180208184346531]
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power [2018B030322001]
- Guangdong Provincial Key Laboratory of Catalysis [2020B121201002]
- Shenzhen Clean Energy Research Institute [CERI-KY-2019-003]
- National Natural Science Foundation of China [2017 M611446]
- Core Research Facilities at SUSTech from Presidential fund
- Development and Reform Commission of Shenzhen Municipality
A highly efficient photocatalyst, TOCN, with S-scheme heterojunction was prepared through a facile phase interfacial reaction, showing higher water splitting activity under sunlight. The formation of S-scheme heterojunction is the key factor in enhancing photocatalytic performance.
It is a considerable challenge to design a highly efficient photocatalyst for overall water splitting. Herein, a zerodimension/two-dimension (0D/2D) TiO2 nanodots/g-C3N4 step-scheme (S-scheme) photocatalyst (TOCN) for overall water splitting was prepared by a facile phase interfacial reaction. TOCN showed higher photocatalytic water splitting activity under simulated sunlight, which is about 2.2 and 1.7 times higher than TiO2 nanodots and g-C3N4, respectively. The enhancement of photocatalytic performance can be mainly attributed to the formation of S-scheme heterojunction, rather than normal type-II heterojunction, which could not only improve charge separation but also remain the redox ability of TiO2 and g-C3N4. This work presents a simple method to construct an efficient photocatalyst with S-Scheme heterojunction for overall water splitting.
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