期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 331, 期 1-2, 页码 7-14出版社
ELSEVIER
DOI: 10.1016/j.molcata.2010.07.015
关键词
Photocatalytic; C-60; Hybridization; Titanium dioxide
资金
- Chinese National Science Foundation [20925725, 20673065]
- National Basic Research Program of China [2007CB613303]
- Chinese Postdoctoral Foundation [023215006]
An efficient TiO2 photocatalyst was obtained by surface hybridization with a thin layer of C-60 molecules. The photocatalytic performance of C-60-hybridized TiO2 under ultraviolet light irradiation was enhanced by 4 times compared with that of P25-TiO2 photocatalyst. The enhanced photocatalytic activity for C-60-hybridized TiO2 was originated from the high migration efficiency of photo-induced electrons on the interface of C-60 and TiO2, which was produced by the interaction TiO2 and C-60 with a conjugative pi-system. The interaction was confirmed by the Raman spectroscopy, infrared spectroscopy and photo-electrochemical measurements. The enhancement of photocatalytic activity strongly depended on the coverage of C-60 molecules on the surface of TiO2, and the optimum hybridization effect was found at a weight ratio of 2.5 wt% (C-60/TiO2). The mechanism for the enhanced photocatalytic activity of TiO2 by C-60 was discussed. (C) 2010 Elsevier B.V. All rights reserved.
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