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题名: Photoluminescence characteristics of TiO2 and their relationship to the photoassisted reaction of water/methanol mixture
作者: Shi, Jianying;  Chen, Jun;  Feng, Zhaochi;  Chen, Tao;  Lian, Yuxiang;  Wang, Xiuli;  Li, Can
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2007-01-18
DOI: 10.1021/jp065744z
卷: 111, 期:2, 页:693-699
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: This work investigated the photoluminescence characteristics of TiO2 and discussed the relationship between the photoluminescence features of TiO2 and the photoassisted reaction of water/methanol mixture. It is found that anatase TiO2 displays a visible luminescence band centered at about 505 nm and rutile TiO2 mainly shows a near-infrared luminescence band centered at about 835 nm, which are respectively ascribed to the oxygen vacancies in anatase TiO2 and the intrinsic defects in rutile TiO2. The visible luminescence band is easily quenched by the Pt deposited on the surface of TiO2, while the near-infrared luminescence band is hardly influenced by the deposited Pt. It is suggested that the excited electrons trapped in the oxygen vacancies of anatase are facilely transferred to Pt to contribute to the photoassisted reaction, but the electrons trapped in the intrinsic defects of rutile are not.
关键词[WOS]: ANATASE TIO2 ;  PHOTOCATALYTIC ACTIVITY ;  HETEROGENEOUS PHOTOCATALYSIS ;  CRYSTAL-STRUCTURE ;  TITANIUM-DIOXIDE ;  ROOM-TEMPERATURE ;  SINGLE-CRYSTALS ;  UV RAMAN ;  IN-SITU ;  DEFECTS
语种: 英语
WOS记录号: WOS:000245005300031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140565
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Shi, Jianying,Chen, Jun,Feng, Zhaochi,et al. Photoluminescence characteristics of TiO2 and their relationship to the photoassisted reaction of water/methanol mixture[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(2):693-699.
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