掺杂纳米二氧化钛研究进展  

Research development of doped TiO_2

作　　者：张理元[1] 刘钟馨[1] 于晓龙[1] 吕作凤[1] 曹阳(指导)[1] 

机构地区：[1]海南优势资源化工材料应用技术教育部重点实验室,硅锆钛资源综合开发与利用海南省重点实验室,海南大学材料与化工学院,海南海口570228

出　　处：《化学工程师》2010年第5期46-49,共4页Chemical Engineer

基　　金：科技部国际科技合作项目(2008NR0685);教育部重点科技项目(No:207091);海南省教育厅基金(Hjkj2008-01);国际科技合作项目(2009DFA92550);海南大学重点项目(hd09xm22);海南大学创新团队项目(hd09xm03)

摘　　要：TiO_2作为一种重要的光催化剂,在太阳能光解水,污水处理等方面有着重要的应用前景。但由于TiO_2禁带宽度为3.2eV,只在紫外线光照射时表现出高的催化活性,而紫外光只占太阳光的5%左右,另外光生电子和空穴容易复合,降低量子产率,从而限制了TiO_2光催化剂的广泛应用。大量研究实验证明,通过掺杂可有效提高TiO2的光催化活性,拓宽其光响应范围。TiO2,as an important pholocatalyst,plays an important application and perspective in water splitting and sewage treatment. However, TiO2 shows high photocatalytic activity only by irradiation of UV light for its wide band gap（Eg=3.2 eV）,Unfortunately the proportion of UV light to the sun light is only 5%.In addition,easy recombination of photo-induced electrons and holes makes the efficiency of photoquantum lower. These unfavorable factors make the practical application of TiO2 limited.It was proved by many experiments that adulteration was an efficient method to improve photocatalytic activity and widen photoresponse range.

关 键 词：二氧化钛 掺杂 金属 非金属 

分 类 号：O614.41[理学—无机化学]