期刊
CHEMSUSCHEM
卷 8, 期 7, 页码 1189-1196出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201500024
关键词
boron; carbon; photochemistry; semiconductors; water splitting
资金
- National Basic Research Program of China [2013CB632405]
- National Natural Science Foundation of China [21425309, 21173043]
- Natural Science Foundation of Higher Education Institutions in Anhui Province of China [KJ2014A191]
- Postdoctoral Scientific Research Start-up Funding of Fuzhou University in China [601116]
- College Students' Innovative Training Program of China [AH201410371077]
- school-level item of Fuyang Normal College of China [FSB201401003, 2014KJFH01]
The semiconductor heterojunction has been an effective architecture to enhance photocatalytic activity by promoting photogenerated charge separation. Here, graphitic carbon nitride (CN) and B-modified graphitic carbon nitride (CNB) composite semiconductors were fabricated by a facile calcination process using cheap, sustainable, and easily available sodium tetraphenylboron and urea as precursors. The synthetic CN-CNB-25 semiconductor with a suitable CNB content showed the highest visible-light activity. Its degradation ratio for methyl orange and phenol was more than twice that of CN and CNB and its H-2 evolution rate was approximate to 3.4 and approximate to 1.8times higher than that of CN and CNB, respectively. It also displayed excellent stability and reusability. The enhanced activity of CN-CNB-25 was attributed predominantly to the efficient separation of photoinduced electrons and holes. This paper describes a visible-light-responsive CN composite semiconductor with great potential in environmental and energy applications.
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