金属修饰N掺杂TiO_2的制备及其光催化性能研究  

Preparation of N-doped TiO_2 modified by different metals in association with the photocatalytic performance

作　　者：石海洋[1] 王岩[2] 王宫南[1] 

机构地区：[1]开封大学化学工程学院,开封475004 [2]河南大学基础实验教学中心,开封475004

出　　处：《化工新型材料》2013年第8期39-42,共4页New Chemical Materials

基　　金：河南省教育厅自然科学研究计划项目(2009C150002)

摘　　要：首先采用热化学法制备纳米管钛酸,然后把金属硝酸盐和尿素均匀分散于纳米管钛酸的表面,再通过高温焙烧的方法制备得到金属修饰的N掺杂TiO2。采用DRS、XRD分别对样品光吸收能力、晶体结构进行了分析,研究了修饰的金属和掺杂N元素对催化剂光谱吸收的贡献。通过紫外光和可见光光照下降解气相丙烯和液相苯酚考察了催化剂的光催化活性,结果表明,金属修饰N掺杂TiO2在可见光照下对丙烯和苯酚都表现出良好的可见光光催化能力。Nanotubular titanic acids,prepared with thermochemical method,metal nitrate and urea were dispersed in the ethanol solution.After ultrasound treatment,both metal nitrate and urea can be precipitated homogeneously on the surface of the nanotubular titanic acids.Then,through high temperature treatment,the metal modified N-TiO2 was got.The light absorption capacity and crystal structure of the catalyst were investigated by means of DRS and XRD.Both UV and visible light photocatalysed activities have been studied by photocatalysis decomposition of propylene and phenol.The results showed that metal modified N-TiO2 had a better photocatalysis activities then N-TiO2.

关 键 词：TIO2 氮掺杂 金属修饰 光催化 丙烯 苯酚 

分 类 号：O643.36[理学—物理化学]