| Preparation and Photocatalytic Activity of Nanocrystalline GdFeO3 |
| |
| 作者姓名： | 牛新书 李红花 张锋 刘国光 蒋凯 |
| |
| 作者单位： | School of Chemical and Environmental Sciences，Henan Key Laboratory for Environmental Pollution Control，Henan Normal University，Xinxiang 453007，China，School of Chemical and Environmental Sciences，Henan Key Laboratory for Environmental Pollution Control，Henan Normal University，Xinxiang 453007，China，School of Chemical and Environmental Sciences，Henan Key Laboratory for Environmental Pollution Control，Henan Normal University，Xinxiang 453007，China，School of Chemical and Environmental Sciences，Henan Key Laboratory for Environmental Pollution Control，Henan Normal University，Xinxiang 453007，China，School of Chemical and Environmental Sciences，Henan Key Laboratory for Environmental Pollution Control，Henan Normal University，Xinxiang 453007，China |
| |
| 基金项目： | Project supported by Henan Innovation Project for University Prominent Research Talents （2118） and Henan Key Project for Science and Technology （0424270073）. |
| |
| 摘 要： | Photocatalytic reactions at semiconductor particleshave been the focus of numerous investigations in re-cent years ,since their applicationresults inthe quan-titative degradation of a large number of chemical con-taminants . Of many semiconductor oxides , TiO2hasbeen provento be the benchmark photocatalyst for ef-fective degradation of organic pollutants ,pri marily be-cause of its optical and electronic properties ,lowcost ,chemical stability and non-toxicity .However ,sinceitsband-gapis larg…
|
| 关 键 词： | GdFeO3 纳米晶 无机材料 溶胶-凝胶 制备 稀土 XRD TEM 照射时间 |
| 文章编号： | 1002-0721（2005）04-0420-04 |
| 收稿时间： | 2005-03-14 |
| 修稿时间： | 2005-04-20 |
Preparation and Photocatalytic Activity of Nanocrystalline GdFeO3 |
| |
| Niu Xinshu,Li Honghua,Zhang Feng,Liu Guoguang,JIANG Kai.Preparation and Photocatalytic Activity of Nanocrystalline GdFeO3[J].Journal of Rare Earths,2005,23(4):420-423. |
| |
| Authors: | Niu Xinshu Li Honghua Zhang Feng Liu Guoguang JIANG Kai |
| |
| Abstract: | With Gd2O3, Fe(NO3)3·9H2O, and nitric acid(1:1 volume fraction) as starting materials, nanocrystalline material of rare-earth composite oxide GdFeO3 with perovskite-type structure was synthesized by sol-gel method in the system of citric acid. Structural characteristics were characterized by XRD and TEM, which indicate that the sample is nanocrystallite with uniform grain size distribution and the average grain size is about 21 nm. Its crystal structure includes a certain amount of lattice distortion due to decrease of grain size and increase of surface area. Photocatalytic properties of this material were tested by decolorization of various water-soluble dyes. Effects of irradiation time and amount of GdFeO3 on photocatalytic activity were also investigated. The results show that nano-sized GdFeO3 exhibits high photocatalytic activity and that increase of irradiation time and the amount of GdFeO3 can improve its photocatalytic activity. |
| |
| Keywords: | inorganic materials gadolinium iron oxide sol-gel photocatalytic activity rare earths |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
