Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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 Publication | JOURNAL OF RARE EARTHS
 |
| Volume | 19Issue:3Pages:187-191 |
| Abstract | 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. |
| Subtype | Article |
| Keyword | Rare Earths Photo-catalysis Titanium Dioxide Yttrium Oxide Composite Semiconductor Methylene Blue |
| WOS Headings | Science & Technology ; Physical Sciences |
| WOS Subject Extended | Chemistry |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Applied |
| WOS ID | WOS:000170779300006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10433 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 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 |
| 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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