纳米SnO_2/ZnO复合氧化物对甲醛的光催化性能研究  

Study on the Photodegradation of Formaldehyde with SnO_2/ZnO Nanoparticles

作　　者：周秉明[1] 申利春[1] 

机构地区：[1]贵州大学化学工程学院,贵州贵阳550003

出　　处：《贵州工业大学学报（自然科学版）》2008年第3期1-4,共4页Journal of Guizhou University of Technology(Natural Science Edition)

基　　金：贵州省优秀科技教育人才省长资金(No.2005-111)

摘　　要：以SnCl4.5H2O、ZnSO4.7H2O、氨水为原料,采用共沉淀法制备出SnO2/ZnO复合光催化剂,用TEM、XRD测试手段对其进行了表征,并将其用于降解甲醛的光催化实验。结果表明,经600℃煅烧保温6 h制得的复合光催化剂具有较高的光催化活性,明显优于纯纳米ZnO;甲醛的光催化降解反应符合一级动力学方程。The SnO2/ZnO nanocomposites were prepared by coprecipitation method with SnCl4 · 5H2O,ZnSO4 · 7H2O,NH3 · H2O and characterized by the methods of x- ray diffraction （XRD） ,Transmission E- lectron Microscopy （TEM）. The photocatalytic activity of complex oxides was examined by using formaldehyde as a model reaction. The results, showed that the photocatalytic activity of SnO2/ZnO nanocomposites that calcined at 600 ℃ for 6 hour was obviously better than pure nanometer ZnO. Formaldehyde degradation reaction fitted the first- order kinetics.

关 键 词：纳米SnO2/ZnO 共沉淀 光催化 甲醛 

分 类 号：O643[理学—物理化学] X7[理学—化学]