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题名: Effect of Nd3+ doping on photocatalytic activity of TiO2 nanoparticles for water decomposition to hydrogen
作者: Huang, CY;  You, WS;  Dang, LQ;  Lei, ZB;  Sun, ZG;  Zhang, LC
关键词: neodymium ;  titania ;  photocatalysis ;  water decomposition ;  hydrogen
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-03-01
卷: 27, 期:3, 页:203-209
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The undoped TiO2 and Nd3+-doped TiO2 samples were prepared by sol-gel method and characterized by XRD, UV-Vis, TEM and N-2 adsorption. The correlation between the photocatalytic activity for hydrogen evolution and the phase composition, BET surface area and intensity of light-absorption in UV region was investigated. For the undoped TiO2 samples, the particle size and agglomeration increased while its BET surface area and the intensity of light-absorption in UV region decreased with the increasing calcination temperature; the anatase to rutile phase transformation started at 600 degrees C and completed at: 800 degrees C; the photocatalytic activity of undoped TiO2 decreased with the increasing calcination temperature, and the sample calcined at 600 degrees C was the best because of the coexistence of a certain proportion of rutile/anatase mixed phase. For the Nd3+/TiO2 samples, Nd3+ doping inhibited the crystal phase transformation and the rutile phase began to appear at 800 degrees C; moreover, Nd3+ doping restrained the growth of grain size, improved the dispersivity of the particles, and raised BET surface area. The more the doping amount was, the larger the BET surface area was. As the calcination temperature increases, the decreasing extent of the light-absorption intensity of Nd3+/TiO2 in UV region was lower than that of undoped TiO2. Nd3+ raised the photocatalytic activity for hydrogen generation and the optimum amount of Nd3+ doping was 0.1%, at which the photocatalytic activity of Nd3+/TiO2 was 3.5 times higher than that of undoped TiO2.
关键词[WOS]: OXIDATION ;  DYNAMICS ;  ANTIMONY ;  POWDERS ;  OXIDES
语种: 英语
WOS记录号: WOS:000236753400004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139946
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Normal Univ, Inst Chem Funct Mat, Fac Chem & Chem Engn, Dalian 116029, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Huang, CY,You, WS,Dang, LQ,et al. Effect of Nd3+ doping on photocatalytic activity of TiO2 nanoparticles for water decomposition to hydrogen[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(3):203-209.
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