高等学校化学学报2000，Vol.21Issue(10)：1547-1551,5.
TiO2纳米晶光催化降解铬酸根离子的研究
Heterogeneous Photocatalytic Reaction of Cr(VI)Reduction on Nanosized Titania
摘要
Abstract
The influences of the pH value of solutions, initial concentrations of chromate, purged gas and photocatalysts loading on clean-up efficiency for Cr (VI) have been investigated. In order to study the influence of phase and size effect on the photocatalytic activities, anatase and rutile TiO2 nanocrystallites were prepared, whose particle size is 9.5 nm(BET surface area 133.4 m2/g) for anatase phase and 7.5 nm (BET surface area 167.6 m2/g) for rutile phase, respectively. The results of the photocatalytic reactions indicate that the phtocatalytic activity of anatase crystallite is higher than that of rutile crystallite,however, both anatase and rutile nanosized TiO2 powders have higher photocatalytic activities than those of commercial TiO2 powder.关键词
光催化/氧化钛/尺寸效应/铬酸根Key words
Photocatalysis/Titania/Size effect/Chromate分类
化学化工引用本文复制引用
张青红,高濂,郭景坤..TiO2纳米晶光催化降解铬酸根离子的研究[J].高等学校化学学报,2000,21(10):1547-1551,5.基金项目
上海市科委新材料研究中心(批准号：98JC14021)资助. （批准号：98JC14021）
