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中文摘要: 采用浸渍法制备了复合杂多酸H4SiW12O40/TiO2光催化材料,并用XRD、FT-IR和UV-Vis-DRS研究了其结构形态.同时考察了H4SiW12O40/TiO2光催化剂对光解水制氧的应用研究.结果表明,H4SiW12O40/TiO2仍然保留Keggin结构,TiO2均匀固载在H4SiW12O40中,H4SiW12O40与TiO2之间仅仅是简单的物理吸附.在紫外光辐射下光催化分解水制氧的实验中,H4SiW12O40/TiO2的光催化析氧速率高达231.37 μmol/(L·h),为纯H4SiW12O40的1.37倍.
Abstract:A new complex heteropoly acid,H4SiW12O40/TiO2,was prepared by immersion method,and then characterized with XRD,FTIR and UV-Vis techniques.By means of this catalytic material,the optimum photocatalytic conditions of photocatalytic activity for oxygen evolution have been studied.The results show that the H4SiW12O40/TiO2 still reserved the Keggin structure.A physical adsorption existed between H4SiW12O40 and nanosized titania.In the experiment of water splitting to oxygen under UV-illuminated condition,the rat...
文章编号： 中图分类号：TB34 文献标志码：
基金项目:国家高技术研究发展计划(863计划)，教育部新世纪优秀人才支持计划?
LAN Wen-lan LI Jie CHEN Qi-yuan
College of Chemistry and Chemical Engineering;Central South University;Changsha 410083;China
引用文本：
兰文兰,李洁,陈启元.硅钨酸/TiO_2复合光催化材料光解水催化性能研究[J].有色金属（冶炼部分）,2009(3):.
.Photocatalytic Properties for Photocatalytic Water Splitting of H_4SiW_(12)O_(40)/TiO_2[J].Nonferrous Metals (Extractive Metallurgy),2009(3):.
兰文兰,李洁,陈启元.硅钨酸/TiO_2复合光催化材料光解水催化性能研究[J].有色金属（冶炼部分）,2009(3):.
.Photocatalytic Properties for Photocatalytic Water Splitting of H_4SiW_(12)O_(40)/TiO_2[J].Nonferrous Metals (Extractive Metallurgy),2009(3):.
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