A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity

	A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity
	Tan H. Q.; Zhao Z.; Niu M.; Mao C. Y.; Cao D. P.; Cheng D. J.; Feng P. Y.; Sun Z. C.
	2014
发表期刊	Nanoscale
ISSN	ISBN/2040-3364
卷号	6 期号:17 页码:10216-10223
摘要	Colored TiO2 has attracted enormous attention due to its visible light absorption and excellent photocatalytic activity. In this report, we develop a simple and facile solid-state chemical reduction approach for a large-scale production of colored TiO2 at mild temperature (300-350 degrees C). The obtained sample possesses a crystalline core/amorphous shell structure (TiO2@TiO2-x). The oxygen vacancy results in the formation of a disordered TiO2-x shell on the surface of TiO2 nanocrystals. XPS and theoretical calculation results indicate that valence band tail and vacancy band below the conduction band minimum appear for the TiO2-x, which implies that the TiO2@TiO2-x nanocrystal has a narrow band gap and therefore leads to a broad visible light absorption. Oxygen vacancy in a proper concentration promotes the charge separation of photogenerated carriers, which improves the photocatalytic activity of TiO2@TiO2-x nanocrystals. This facile and general method could be potentially used for large scale production of colored TiO2 with remarkable enhancement in the visible light absorption and solar-driven H-2 production.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43670
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Tan H. Q.,Zhao Z.,Niu M.,et al. A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity[J]. Nanoscale,2014,6(17):10216-10223.
APA	Tan H. Q..,Zhao Z..,Niu M..,Mao C. Y..,Cao D. P..,...&Sun Z. C..(2014).A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity.Nanoscale,6(17),10216-10223.
MLA	Tan H. Q.,et al."A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity".Nanoscale 6.17(2014):10216-10223.

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