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The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO2
Liu, Gang1,2,3; Wang, Xuewen1; Chen, Zhigang1; Cheng, Hui-Ming1; Lu, Gao Qing (Max)2,3
Corresponding AuthorCheng, Hui-Ming(cheng@imr.ac.cn)
2009-01-15
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume329Issue:2Pages:331-338
AbstractTwo 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.
KeywordTiO2 Anatase Rutile Nitrogen doping Crystal phase
Funding OrganizationBasic Research Program, Ministry of Science and Technology of China and Australian Research Council
DOI10.1016/j.jcis.2008.09.061
Indexed BySCI
Language英语
Funding ProjectBasic Research Program, Ministry of Science and Technology of China and Australian Research Council
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000261516200016
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:98[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/98973
Collection中国科学院金属研究所
Corresponding AuthorCheng, Hui-Ming
Affiliation1.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
Recommended Citation
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.
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