Photochromism of WO3 colloids combined with TiO2 nanoparticles

doi:10.1021/jp026031t

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	Photochromism of WO3 colloids combined with TiO2 nanoparticles
	He, T ; Ma, Y ; Cao, Y ; Hu, XL ; Liu, HM ; Zhang, GJ ; Yang, WS ; Yao, JN
刊名	JOURNAL OF PHYSICAL CHEMISTRY B
	2002-12-12
卷号	106 期号:49 页码:12670-12676
ISSN号	1520-6106
DOI	10.1021/jp026031t
英文摘要	WO3 and TiO2 colloids were synthesized by the, forced hydrolysis technique, and different amounts of the TiO2 colloids were added to WO3 colloids under sonication to get stable combined TiO2 and WO3 colloids (WO3/TiO2). The experimental results indicate that the UV-Iight coloration of WO3 colloids can be improved greatly after the TiO2 combination. When the molar ratio of TiO2 and WO3 is about 1:40, AOD at 900 nm for WO3/TiO2 colloids is about 12.7 times that of WO3 colloids. The improvement effect increases with the increased concentration of TiO2 in the composite colloids, and the maximum enhancement can increase more than 50-fold. It is shown that after the combination, the recombination of photogenerated carriers is suppressed efficiently, and more electrons can be trapped within the band gap of WO3 to contribute to the coloration process.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000179732100005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/78915]
专题	中国科学院化学研究所
通讯作者	Yao, JN
作者单位	1.Chinese Acad Sci, Ctr Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	He, T,Ma, Y,Cao, Y,et al. Photochromism of WO3 colloids combined with TiO2 nanoparticles[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2002,106(49):12670-12676.
APA	He, T.,Ma, Y.,Cao, Y.,Hu, XL.,Liu, HM.,...&Yao, JN.(2002).Photochromism of WO3 colloids combined with TiO2 nanoparticles.JOURNAL OF PHYSICAL CHEMISTRY B,106(49),12670-12676.
MLA	He, T,et al."Photochromism of WO3 colloids combined with TiO2 nanoparticles".JOURNAL OF PHYSICAL CHEMISTRY B 106.49(2002):12670-12676.