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Photocatalytic activity for H-2 evolution of TiO2 with tuned surface crystalline phase
Zhang, Jing1; Yan, Song1; Zhao, Shanlin1; Xu, Qian2; Li, Can2
关键词Tio2 Surface Phase Control Photocatalytic Hydrogen Evolution Uv Raman Spectroscopy
刊名APPLIED SURFACE SCIENCE
2013-09-01
DOI10.1016/j.apsusc.2013.04.153
280页:304-311
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]Chemistry ; Materials Science ; Physics
关键词[WOS]DOPED TIO2 ; TITANIUM-DIOXIDE ; RUTILE TIO2 ; HYDROTHERMAL METHOD ; THERMAL-STABILITY ; ANATASE ; NANOPARTICLES ; DEGRADATION ; PERFORMANCE ; OXIDATION
英文摘要Two methods, which is high temperature calcination method and doping La2O3 method, were used to prepare TiO2 with an adjustable surface crystalline structure. It has been shown that TiO2 powders with a tunable surface phase were obtained by carefully controlling the calcination temperature and calcination time. Compared with calcination method, it is difficult to prepare TiO2 with variable surface anatase-rutile ratio by La2O3 doping. UV Raman spectra and XRD clearly indicate that La2O3 can act as a stabilizer for the development of rutile phase from the bulk to surface region of La2O3-TiO2 sample, even after high temperature calcination. The rate of H-2 production from methanol-water solution was used as an indicator for the photocatalytic activity of the TiO2 and La2O3-TiO2 samples. It is evident that enhanced activity of TiO2 is observed when the surface region is in the mixed phase, in comparison of the sample with pure surface anatase or pure surface rutile. The notable effect of surface phase on the photocatalytic activity of TiO2 is also observed in the La2O3-TiO2 sample. The rate of H-2 production shows similar photocatalytic activities although their bulk rutile contents are greatly different in the La2O3-TiO2 samples, which is similar to that of undoped TiO2. (C) 2013 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000321045700046
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137906
专题中国科学院大连化学物理研究所
作者单位1.Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Liaoning 113001, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Zhang, Jing,Yan, Song,Zhao, Shanlin,et al. Photocatalytic activity for H-2 evolution of TiO2 with tuned surface crystalline phase[J]. APPLIED SURFACE SCIENCE,2013,280:304-311.
APA Zhang, Jing,Yan, Song,Zhao, Shanlin,Xu, Qian,&Li, Can.(2013).Photocatalytic activity for H-2 evolution of TiO2 with tuned surface crystalline phase.APPLIED SURFACE SCIENCE,280,304-311.
MLA Zhang, Jing,et al."Photocatalytic activity for H-2 evolution of TiO2 with tuned surface crystalline phase".APPLIED SURFACE SCIENCE 280(2013):304-311.
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