期刊
JOURNAL OF CATALYSIS
卷 286, 期 -, 页码 273-278出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2011.11.013
关键词
Crystalline phase; TiO2-based composite photocatalyst; Persistent catalytic activity
资金
- Ministry of Education, Culture, Sports, Science for Technology of Japan (MEXT)
- [20360293]
- [22651022]
- Grants-in-Aid for Scientific Research [22651022] Funding Source: KAKEN
Nitrogen-doped titanium oxide (TiO2-xNy) nanocrystalline with different phase of anatase. rutile or brookite was coupled with CaAl2O4:(Eu, Nd) particles by planetary ball milling treatment. The effect of phase structures on the persistent photocatalytic activity of a CaAl2O4:(Eu, Nd)/TiO2-xNy composite was evaluated for the oxidative destruction of NO. The persistent catalytic degradation of NO by TiO2-xNy was realized in the presence of CaAl2O4:(Eu, Nd), which shows a long afterglow luminescence. The persistent photocatalytic property of composites changed depending on the crystalline phase of TiO2-xNy, i.e., the persistent photocatalytic property of CaAl2O4:(Eu, Nd) combined with brookite type TiO2-xNy was superior to those of anatase or rutile phase TiO2-xNy. (C) 2011 Elsevier Inc. All rights reserved.
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