期刊
RSC ADVANCES
卷 7, 期 65, 页码 40727-40733出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra06774g
关键词
-
资金
- National Natural Science Foundation of China [21267020]
A novel strategy was applied for the preparation of MoS2/graphitic carbon nitride (g-C3N4) with porous morphology. These composites demonstrate a greatly enhanced response to visible light, and remarkably enhanced hydrogen evolution performance by photocatalytic water splitting. Compared to pure g-C3N4, the bulk doping porous MoS2/g-C3N4 (BPMCN) heterojunction photocatalysts exhibit significantly enhanced H-2 evolution of 1640 mmol g(-1) h(-1) under visible light irradiation. The absorption edge is transfered from 455 nm (g-C3N4) to 532 nm (BPMCN-0.7) in the UV-vis diffuse reflectance spectra. Of course, structural, optical and electronic analyses demonstrate that the highly efficient activity of BPMCN is attributed to the enhanced light harvesting by efficient separation of photogenerated electron-hole pairs, and the expansion of the light response range. The present work shows that the formation of 3D heterojunction should be a good strategy to design efficient photocatalysts.
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