Preparation, characterization and photo-catalytic behavior of Y2O3/TiO2 composite semiconductor nanopowder

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	Preparation, characterization and photo-catalytic behavior of Y2O3/TiO2 composite semiconductor nanopowder
	Li, FB ; Gu, GB ; Li, XJ ; Wan, HF ; Huang, ZY
	2001-09-01
发表期刊	JOURNAL OF RARE EARTHS
卷号	19 期号:3 页码:187-191
摘要	Y2O3/TiO2 samples were prepared by sol-gel process and characterized by means of X-ray diffraction (XRD), laser Raman spectra MRS), UV-visible diffuse reflectance spectra MRS), specific surface area (BET), and transmission electron microscopy (TEM). The results show that the relative intensity of 101 peak of anatase and 002 peak of rutile I the mean crystal diameter and mean particle diameter Of Y2O3/TiO2 samples decrease while specific surface area increases owing to doping Y2O3 . Y2O3/TiO2 samples have a larger specific surface area and higher thermal stability. Owing to quantum size effect, the reflectance Of Y2O3/TiO2 samples is larger than that of pure TiO2 in the range of 380 similar to 460 nm and the position of Raman peaks varies slightly. Being a model reaction, the photo-catalytic degradation of methylene blue (MB) with positive charge and methyl orange (MO) with negative charge was investigated in TiO2 and Y2O3/TiO2 nanopowder suspension irradiated by high-pressure mercury lamp. As a result, the addition of Y2O3 to TiO2 is detrimental to photo-activity of TiO2 for MB photo-degradation and photo-catalytic behavior is enhanced due to 5%, 10% Y2O3 deposited on TiO2 for the photo-degradation of MO. And the relationship between photo-physical properties and photo-activity was discussed.
文章类型	Article
关键词	Rare Earths Photo-catalysis Titanium Dioxide Yttrium Oxide Composite Semiconductor Methylene Blue
WOS标题词	Science & Technology ; Physical Sciences
研究领域[WOS]	Chemistry
收录类别	SCI
语种	英语
WOS类目	Chemistry, Applied
WOS记录号	WOS:000170779300006
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10433
专题	中国科学院广州能源研究所
作者单位	1.Guangdong Inst Ecoenvironm & Soil Sci, Guangzhou 510650, Peoples R China 2.S China Univ Technol, Coll Chem Engn, Guangzhou 510642, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China
推荐引用方式 GB/T 7714	Li, FB,Gu, GB,Li, XJ,et al. Preparation, characterization and photo-catalytic behavior of Y2O3/TiO2 composite semiconductor nanopowder[J]. JOURNAL OF RARE EARTHS,2001,19(3):187-191.
APA	Li, FB,Gu, GB,Li, XJ,Wan, HF,&Huang, ZY.(2001).Preparation, characterization and photo-catalytic behavior of Y2O3/TiO2 composite semiconductor nanopowder.JOURNAL OF RARE EARTHS,19(3),187-191.
MLA	Li, FB,et al."Preparation, characterization and photo-catalytic behavior of Y2O3/TiO2 composite semiconductor nanopowder".JOURNAL OF RARE EARTHS 19.3(2001):187-191.