期刊
ADVANCED SCIENCE
卷 6, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/advs.201801321
关键词
2D materials; black phosphorus; hydrogen evolution; photocatalysis
资金
- Science and Technology Service Network Initiative of Chinese Academy of Sciences [KFJ-STS-SCYD-102]
- National Natural Science Foundation of China [51672305, 51702352]
- China postdoctoral science foundation [2018M633183, 2018T110897]
- Leading Talents of Guangdong Province Program [00201520]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [11301215, 11205617]
An efficient metal-free photocatalyst composed of black phosphorus (BP) and graphitic carbon nitride (CN) is prepared on a large scale by ball milling. Using economical urea and red phosphorus (RP) as the raw materials, the estimated materials cost of BP/CN is 0.235 Euro per gram. The BP/CN heterostructure shows efficient charge separation and possesses abundant active sites, giving rise to excellent photocatalytic H-2 evolution and rhodamine B (RhB) degradation efficiency. Without using a co-catalyst, the metal-free BP/CN emits H-2 Consistently at a rate as large as 786 mu mol h(-1) g(-1) and RhB is decomposed in merely 25 min during visible-light irradiation. The corresponding electron/hole transfer and catalytic mechanisms are analyzed and described. The efficient metal-free catalyst is promising in visible-light photocatalysis and the simple ball-milling synthetic method can be readily scaled up.
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