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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
Source PublicationJOURNAL OF RARE EARTHS
Volume19Issue:3Pages:187-191
AbstractY2O3/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.
SubtypeArticle
KeywordRare Earths Photo-catalysis Titanium Dioxide Yttrium Oxide Composite Semiconductor Methylene Blue
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedChemistry
Indexed BySCI
Language英语
WOS SubjectChemistry, Applied
WOS IDWOS:000170779300006
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10433
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
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.
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