中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effect of annealing temperature on the surface structure and properties of chromium doped titania

文献类型:期刊论文

作者Gao Bi-Fen; Ma Ying; Cao Ya-An; Yao Jian-Nian
刊名ACTA CHIMICA SINICA
出版日期2006-07-14
卷号64期号:13页码:1329-1333
关键词Semiconductor Doping Titanium Dioxide Chromium Visible Light Absorption
ISSN号0567-7351
英文摘要Chromium doped titanium dioxide Cr-TiO2 was prepared by the sol-gel method. The effects of annealing temperature on the crystal structure, oxidation states of chromium, and UV-vis absorption properties of Cr-TiO2 were investigated in details. Experiment results showed that chromium mainly existed on TiO2 surface as Cr2O3 and chromate or dichromate of Cr6+ in Cr-TiO2 annealed at temperature no higher than 723 K. The content of Cr6+ was increased with the increase of temperature. The visible light absorption of Cr-TiO2 within 400 similar to 550 nm should be attributed to the (4)A(2) -->T-4(1) transition of Cr3+ and the O-->Cr6+ charge transfer (1t(1) --> 2e). The absorption within 620 similar to 800 nn was due to the (4)A(2)-->T-4(2) transition of Cr3+. The former was strengthened with the increase of annealing temperature, whereas the latter was weakened.
语种英语
WOS记录号WOS:000239181500007
出版者SCIENCE CHINA PRESS
源URL[http://ir.iccas.ac.cn/handle/121111/59703]  
专题中国科学院化学研究所
通讯作者Gao Bi-Fen
作者单位1.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Graduated Sch, Beijing 100039, Peoples R China
3.Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
推荐引用方式
GB/T 7714
Gao Bi-Fen,Ma Ying,Cao Ya-An,et al. Effect of annealing temperature on the surface structure and properties of chromium doped titania[J]. ACTA CHIMICA SINICA,2006,64(13):1329-1333.
APA Gao Bi-Fen,Ma Ying,Cao Ya-An,&Yao Jian-Nian.(2006).Effect of annealing temperature on the surface structure and properties of chromium doped titania.ACTA CHIMICA SINICA,64(13),1329-1333.
MLA Gao Bi-Fen,et al."Effect of annealing temperature on the surface structure and properties of chromium doped titania".ACTA CHIMICA SINICA 64.13(2006):1329-1333.

入库方式: OAI收割

来源:化学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。