H_4SiW_(12)O_(40)/SiO_2光催化剂的制备及其光催化制氢活性研究  

Preparation,Characterization and Research on The Properties of Photocatalytic Hydrogen Generation of H_4SiW_(12)O_(40)/SiO_2

作　　者：任春霞[1] 杨广成[2] 

机构地区：[1]泰山学院材料与化学工程系,山东泰安271021 [2]泰山学院生物科学与技术系,山东泰安271021

出　　处：《泰山学院学报》2009年第3期75-80,共6页Journal of Taishan University

摘　　要：利用溶胶-凝胶法制备了H4SiW12O40/SiO2光催化剂,并通过UV-Vis、FT-IR、TG-DTA等手段进行了表征,表明负载SiO2后,杂多阴离子与SiO2表面相互作用,使SiW12波数发生不同程度的位移.以乙醇为电子给体,考察了催化剂的光催化制氢活性,并探讨光催化活性的影响因素.A kind of photocatalyst H4SiW12O40/SiO2 was prepared by sol- gel method and characterized by UV - Vis, FT - IR and TG - DTA techniques. After supported SiO2, the wavenumber of SiW12 moved to- ward red or blue wavelength on account of the interaction between heteropolyanions and the surface of SiO2. Ethanol as electron offer, the properties of the photocatalytic hydrogen generation of H4SiW12 O40/SiO2 were researched.

关 键 词：光催化 硅钨酸 氢气 二氧化硅 

分 类 号：O644[理学—物理化学]