期刊
ACS CATALYSIS
卷 7, 期 3, 页码 1637-1645出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b03244
关键词
carbon-based catalysts; photocatalyst; overall photocatalytic water splitting; two-electron pathway; four-electron pathway
资金
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- National Natural Science Foundation of China [51422207, 51132006, 51572179, 21471106, 21501126]
- Specialized Research Fund for the Doctoral Program of Higher Education [20123201110018]
- Natural Science Foundation of Jiangsu Province of China [BK20140310]
- China Postdoctoral Science Foundation [2014M560445, 2015T80581]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Overall photocatalytic water splitting can proceed through a four-electron or two-electron/two-step pathway. However, it is challenging to manipulate the two- or four electron pathway. Here, we present a carbon-based nanostructure codoped with nitrogen, sulfur, and a transition metal that exhibits reliable photocatalytic ability and satisfactory photostability in water splitting without the need for sacrificial agents. Note that in the present system the .transition-metal-doped structure (M = Cr, Cd, Fe, Zn) as a photocatalyst splits water into H-2 and O-2 through a two-electron pathway while the structure on doping with rare-earth (Re) elements (M = Re = Sm, Ce, Eu, Pr, Er) acts as a photocatalyst via a four-electron pathway and carbon dots work herein as an electron acceptor and a reduction cocatalyst.
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