Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis

doi:10.1039/b902666e

IMR OpenIR

	Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis
	Liu, Gang 1,2,3; Yan, Xiaoxia 1,3; Chen, Zhigang 2; Wang, Xuewen 2; Wang, Lianzhou 1,3; Lu, Gao Qing 1,3; Cheng, Hui-Ming 2
通讯作者	Lu, Gao Qing(maxlu@uq.edu.au)
	2009
发表期刊	JOURNAL OF MATERIALS CHEMISTRY
ISSN	0959-9428
卷号	19 期号:36 页码:6590-6596
摘要	The crystal phases, surface states and hydroxyl groups of TiO2 can intrinsically determine its performance in the applications of photocatalysis and dye-sensitized solar cells. Here we developed a unique rutile-anatase core-shell structured nanocrystalline TiO2 with controlled surface states and hydroxyl groups for photocatalytic applications via a simple phase conversion method, where the semi-crystalline TiO2 embedded in the caramelized sucrose matrix following the hydrothermal process was first converted to a composite of TiOxCy/C by calcining in a nitrogen atmosphere, and this composite was subsequently converted to TiO2 by calcining in an oxygen atmosphere. It was found that the rutile phase exists within anatase particles, and the depth of rutile core in the anatase shell particles can be tuned by adjusting the thickness of TiOxCy (x < y) and TiOxCy (x > y) in the precursor composite TiOxCy/C simply through changing the calcination temperature. More interestingly, the amount of surface adsorbed water and hydroxyl groups and the abundance of surface states in such core-shell structured TiO2 can be controlled by changing the size of the rutile and anatase phases. Finally, photocatalytic degradation reaction as an example clearly demonstrates the substantial role of the surface states in determining photocatalytic activity of the TiO2 in desired applications.
资助者	Basic Research Program, Ministry of Science and Technology of China ; Australian Research Council
DOI	10.1039/b902666e
收录类别	SCI
语种	英语
资助项目	Basic Research Program, Ministry of Science and Technology of China[2009CB220001] ; Australian Research Council[DP0666345]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000269493600021
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：109[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/97564
专题	中国科学院金属研究所
通讯作者	Lu, Gao Qing
作者单位	1.Univ Queensland, Sch Engn, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Queensland, Australia Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
推荐引用方式 GB/T 7714	Liu, Gang,Yan, Xiaoxia,Chen, Zhigang,et al. Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(36):6590-6596.
APA	Liu, Gang.,Yan, Xiaoxia.,Chen, Zhigang.,Wang, Xuewen.,Wang, Lianzhou.,...&Cheng, Hui-Ming.(2009).Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis.JOURNAL OF MATERIALS CHEMISTRY,19(36),6590-6596.
MLA	Liu, Gang,et al."Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis".JOURNAL OF MATERIALS CHEMISTRY 19.36(2009):6590-6596.