Enhanced photocatalytic activity of titania-silica mixed oxide prepared via basic hydrolyzation

	Enhanced photocatalytic activity of titania-silica mixed oxide prepared via basic hydrolyzation
其他题名	论文其他题名
	Xie C.; Xu Z. L.; Yang Q. J.; Xue B. Y.; Du Y. G.; Zhang J. H.
	2004
发表期刊	Materials Science and Engineering B-Solid State Materials for Advanced Technology
ISSN	0921-5107
卷号	112 期号:1 页码:34-41
摘要	Two different synthesis routes were applied to prepare TiO2-XSiO2 (X denotes mol% of silica in titania-silica mixed oxides) with different silica concentrations by using ammonia water as hydrolysis catalyst. Through comparing the photocatalytic performance of two sets of mixed oxides, we found that the photocatalytic activity of mixed oxides prepared via the route which can promote homogeneity, was significantly enhanced as compared with that of counterparts prepared via the another route, and the highest photocatalytic activity obtained by adding about 9.1 mol% silica into titania was much higher than that of pure TiO2. The mixed oxides were investigated by means of XRD, thermal analysis, UV-vis, FT-IR and XPS. The characterization results suggest that, in comparison with pure TiO2, the mixed oxides exhibit smaller crystallite size and higher thermal stability which can elevate the temperature of anatase to rutile phase transformation due to the addition of silica. Furthermore, Bronsted acidity, which is associated with the formation of Ti-O-Si hetero linkages where tetrahedrally coordinated silica is chemically mixed with the octahedral titania matrix, may be a very important contribution to the enhanced photocatalytic activity of titania-silica mixed oxides as well. (C) 2004 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25048
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Xie C.,Xu Z. L.,Yang Q. J.,et al. Enhanced photocatalytic activity of titania-silica mixed oxide prepared via basic hydrolyzation[J]. Materials Science and Engineering B-Solid State Materials for Advanced Technology,2004,112(1):34-41.
APA	Xie C.,Xu Z. L.,Yang Q. J.,Xue B. Y.,Du Y. G.,&Zhang J. H..(2004).Enhanced photocatalytic activity of titania-silica mixed oxide prepared via basic hydrolyzation.Materials Science and Engineering B-Solid State Materials for Advanced Technology,112(1),34-41.
MLA	Xie C.,et al."Enhanced photocatalytic activity of titania-silica mixed oxide prepared via basic hydrolyzation".Materials Science and Engineering B-Solid State Materials for Advanced Technology 112.1(2004):34-41.

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