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Synthesis of rutile-anatase core-shell structured TiO2 for photocatalysis
Liu, Gang1,2,3; Yan, Xiaoxia1,3; Chen, Zhigang2; Wang, Xuewen2; Wang, Lianzhou1,3; Lu, Gao Qing1,3; Cheng, Hui-Ming2
Corresponding AuthorLu, Gao Qing(maxlu@uq.edu.au)
2009
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume19Issue:36Pages:6590-6596
AbstractThe 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.
Funding OrganizationBasic Research Program, Ministry of Science and Technology of China ; Australian Research Council
DOI10.1039/b902666e
Indexed BySCI
Language英语
Funding ProjectBasic Research Program, Ministry of Science and Technology of China[2009CB220001] ; Australian Research Council[DP0666345]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000269493600021
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:94[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/97564
Collection中国科学院金属研究所
Corresponding AuthorLu, Gao Qing
Affiliation1.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
Recommended Citation
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.
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