The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2

doi:10.1016/j.jcis.2008.09.061

IMR OpenIR

	The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2
	Liu, Gang 1,2,3; Wang, Xuewen 1; Chen, Zhigang 1; Cheng, Hui-Ming 1; Lu, Gao Qing (Max)2,3
通讯作者	Cheng, Hui-Ming(cheng@imr.ac.cn)
	2009-01-15
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN	0021-9797
卷号	329 期号:2 页码:331-338
摘要	Two series of nitrogen doped TiO2 samples with different ratios of anatase to rutile phases were prepared by milling the mixture of P25 TiO2 and C6H12N4 in air and gaseous NH3 atmosphere, respectively. Compared to air, NH3 atmosphere plays an important role in delaying the crystallite transformation from anatase to rutile in the mechanochemical reaction of TiO2 and C6H12N4. In contrast to the previously reported results for pure TiO2, it is found that nitrogen doped TiO2 with higher content of rutile phase demonstrates higher photocatalytic activity in photodegrading pollutant Rhodamine B under both UV light and visible light irradiation (lambda > 420 nm), and the amount of the surface-adsorbed water and hydroxyl groups on nitrogen doped TiO2 have little correlations with their crystallite phases (anatase or rutile) and photocatalytic activity. The more abundant surface states characterized by photoluminescence spectroscopy together with the lowered valence band maximum of rutile TiO2 by nitrogen doping are considered as the key factors for the higher activity of nitrogen doped TiO2 with higher content of rutile phase. (C) 2008 Elsevier Inc. All rights reserved.
关键词	TiO2 Anatase Rutile Nitrogen doping Crystal phase
资助者	Basic Research Program, Ministry of Science and Technology of China and Australian Research Council
DOI	10.1016/j.jcis.2008.09.061
收录类别	SCI
语种	英语
资助项目	Basic Research Program, Ministry of Science and Technology of China and Australian Research Council
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000261516200016
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：107[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/321006/98973
专题	中国科学院金属研究所
通讯作者	Cheng, Hui-Ming
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Queensland, Sch Engn, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia 3.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
推荐引用方式 GB/T 7714	Liu, Gang,Wang, Xuewen,Chen, Zhigang,et al. The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2009,329(2):331-338.
APA	Liu, Gang,Wang, Xuewen,Chen, Zhigang,Cheng, Hui-Ming,&Lu, Gao Qing .(2009).The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2.JOURNAL OF COLLOID AND INTERFACE SCIENCE,329(2),331-338.
MLA	Liu, Gang,et al."The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2".JOURNAL OF COLLOID AND INTERFACE SCIENCE 329.2(2009):331-338.