可见光响应型二氧化钛光催化剂研究进展  

Recent Advances in Visible-Light Responsive Titania Photocatalyst

作　　者：程萍[1] 金燕苹[1] 顾明元[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室

出　　处：《材料导报》2004年第7期76-79,共4页Materials Reports

摘　　要：二氧化钛光催化剂用途很广,能够把多种有机污染物光催化降解为 H_2O 和 CO_2,把溶液中的重金属离子还原为无毒的金属,把水分解为 H_2和 O_2 并获取氢能,应用于太阳能电池把太阳能有效转换为化学能等。而阻碍其应用的是它的大禁带宽度不能有效地利用太阳光,因此研究开发对可见光响应的二氧化钛就成为当前光催化剂研究中的关键课题。简述了光催化剂的作用原理,并详细介绍了可见光响应型二氧化钛光催化剂目前的研究现状。Titania is the promising photocatalyst for its high photochemical stability and low cost.It is usedfor different environmental applications,such as photocatalytic degradations of various organic contaminants into nontoxic compounds like water and CO_2,removing heavy metal ions from the solution or reducing them to less toxic ones,and allowing water to be photosplit into H_2 and O_2.However its large band gap energy limits its practical application inthe case of natural solar light.In the paper,recent development in the area of extending the light absorption of titaniainto visible light region is summarized,with emphasis on the mechanisms and modification methods.

关 键 词：二氧化钛 光催化剂 研究进展 可见光响应型 改性 掺杂 

分 类 号：TQ134.11[化学工程—无机化工]