Eu_2Sn_2O_7的水热合成及其光催化活性的研究  

Hydrothermal Synthesis and Photocatalytic Activities Characterization of Europium(Ⅲ) Stannate

作　　者：张进治[1] 张爱平[1] 铁小匀[1] 崔乃毅[1] 

机构地区：[1]北方工业大学理学院,北京100144

出　　处：《分子催化》2008年第6期539-543,共5页Journal of Molecular Catalysis(China)

基　　金：北京市教委科学基金资助项目(KM200610009008)

摘　　要：采用水热法制备了Eu2Sn2O7纳米颗粒,并用TEM、XRD、IR、Raman等技术对其进行了表征.结果表明:Eu2Sn2O7纳米颗粒的粒径约为75nm左右,且尺寸分布均匀.以紫外光为光源,甲基橙为目标降解物,研究了该纳米催化剂的光催化活性,结果显示其具有较高的催化效率.另外,对甲基橙催化降解后的产物进行了UV-Vis、IR、Fluorescence表征分析,并初步探索了甲基橙分子在该实验条件下的光催化降解机理.Eu2Sn2O7 nanoparticles were prepared by hydrothermal method, and characterized by TEM, XRD, IR and Raman techniques. It showed that Eu2Sn2O7 powder consisted of compact particles about 75nm in size and of irregular shape. The photocatalytic activities were also evaluated by decolorization of methyl orange under ultraviolet light. Results indicate that the photograduation rate of as-prepared Eu2Sn2O7nanoparticles is quite high. In addition, UV-vis, IR, fluorescence techniques were used to characterize the degradation species of methyl orange in this experiment, and the possible degradation mechanism was deduced from the spectral analysis.

关 键 词：Eu2Sn2O7 光催化 水热合成 纳米颗粒 

分 类 号：O643.3[理学—物理化学]