Journal
CHEMCATCHEM
Volume 12, Issue 4, Pages 1169-1176Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201901533
Keywords
Carbon nitride; Water splitting; photocatalysis; Broadband light absorption; Ultrathin structure
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Funding
- National Natural Science Foundation of China [21776118, 21878134]
- Natural Science Foundation of Jiangsu Province [BK20180870, BK20190981]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, High-tech Research Key laboratory of Zhenjiang [SS2018002]
- Jiangsu Fund for Distinguished Young Scientists [BK20190045]
- China Postdoctoral Science Foundation [2019M661765]
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education-Hainan Normal University [rdyw2018002]
- high performance computing platform of Jiangsu University
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Broadband light absorption and excellent charge separation/migration efficiency are two important indicators for promising photocatalyst. However, realizing the above two aspects simultaneously is still a challenge. Here, an ultrathin and broadband carbon nitride (UBCN) is synthesized via a short-time thermal oxidation process. The as-prepared UBCN exhibits outstanding photocatalytic H-2 generation activity (240.60 mu mol h(-1)) under irradiation with lambda>400 nm. Moreover, UBCN can work under irradiation with a longer wavelength (lambda>500 nm), the corresponding H-2 evolution rate is 5.08 mu mol h(-1), which is 14.8 times higher than that of bulk carbon nitride (Bulk CN). The excellent photocatalytic performance should be credited to the efficient charge separation/migration (the ultrathin structure) and the extended light absorption range. This work provides a simple and convenient strategy to prepare broadband and ultrathin metal-free photocatalytic materials.
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