期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 83, 期 3-4, 页码 202-207出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2008.02.017
关键词
photocatalyst; visible light; FeTiO3; TiO2; FeTiO3/TiO2; heterojunction; decomposition; CO2 evolution
资金
- Ministry of Environment, Republic of Korea [022-061026]
- Ministry of Information and Communication of Korea [IITA-2008-C109008010030]
- Korea Environmental Industry & Technology Institute (KEITI) [20060200200260] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National IT Industry Promotion Agency (NIPA), Republic of Korea [C1090-0801-0030] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과06A1504] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
FeTiO3/TiO2, a new heterojunction-type photocatalyst working at visible light, was prepared by a simple sol-gel method. Not only did FeTiO3/TiO2 exhibit greatly enhanced photocatalytic activity in decomposing 2-propanol in gas phase and 4-chlorophenol in aqueous solution, but also it induced efficient mineralization of 2-propanol under visible light irradiation (lambda >= 420 nm). Furthermore, it showed a good photochemical stability in repeated photocatalytic applications. FeTiO3 showed a profound absorption over the entire visible range, and its valence band (VB) position is close to that of TiO2. The unusually high photocatalytic efficiency of the FeTiO3/TiO2 composite was therefore deduced to be caused by hole transfer between the VB of FeTiO3 and TiO2. (c) 2008 Elsevier B.V.. All rights reserved.
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