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.
出处
《泰山学院学报》
2009年第3期75-80,共6页
Journal of Taishan University
关键词
光催化
硅钨酸
氢气
二氧化硅
photocatalysis
silicon tungstenic acid
hydrogen
silicon dioxide
