期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 39, 页码 11433-11437出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504985
关键词
g-C3N4 seaweed; hydrogen evolution; photocatalysis; self-assembly; template-free
资金
- 973 program of China [2011CB013000]
- NSFC [21325415, 21174019]
- Beijing Natural Science Foundation [2152028]
- 111 Project [807012]
A seaweed-like graphitic-C3N4 (g-C3N4 seaweed) architecture has been prepared by direct calcination of the freeze-drying-assembled, hydrothermally treated dicyandiamide fiber network. The seaweed network of mesoporous g-C3N4 nanofibers is favorable for light harvesting, charge separation and utilization of active sites, and has highly efficient photocatalytic behavior for water splitting. It exhibits a high hydrogen-evolution rate of 9900 mu molh(-1) g(-1) (thirty times higher than that of its g-C3N4 bulk counterpart), and a remarkable apparent quantum efficiency of 7.8% at 420 nm, better than most of the g-C3N4 nanostructures reported. This work presents a very simple method for designing and developing high-performance catalysts for hydrogen evolution.
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