期刊
CARBON
卷 49, 期 15, 页码 5312-5320出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.07.051
关键词
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资金
- National Natural Science Foundation of China [51078129]
- National Science Foundation for Distinguished Young Scholars [50725825]
- National Basic Research Program of China [2009CB421601]
Graphene film was formed on the surface of titanium dioxide nanotube (TiO2 NT) arrays through in situ electrochemical reduction of a graphene oxide dispersion by cyclic voltammetry. The residual oxygen-containing groups and other structural defects such as sp(3)-hybridized carbons in the electrodeposited graphene were further removed by photo-assisted reduction of the underlying TiO2 NTs, thus achieving the maximum restoration of pi-conjugation in the graphene planes. Spectroscopic, electrochemical, and photoelectrochemical techniques were used to characterize the graphene films, and the use of the resulting graphene-TiO2 NT material in photocatalysis was investigated. The results showed that the graphene-TiO2 NT material exhibited a greatly improved photocatalytic activity compared with unmodified TiO2 NTs. (C) 2011 Elsevier Ltd. All rights reserved.
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