以β-CD为模板剂制备Pr-TiO_2纳米催化剂及其光催化降解性能  

Preparation of Pr-TiO_2 nanocomposite catalyst using β-CD as template and its photocatalytic activity

作　　者：贾帅强 隋国哲[1] 李金龙[1] 佟白[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《印染助剂》2016年第10期15-19,共5页Textile Auxiliaries

基　　金：黑龙江省科学基金资助项目(LC2011C36)

摘　　要：采用β-环糊精(β-CD)为模板剂,利用溶胶-凝胶法制备了TiO_2、Pr-TiO_2纳米催化剂,通过X射线衍射(XRD)、扫描电镜(SEM)、傅立叶红外光谱(FT-IR)和N_2吸附-脱附等技术对所制备的催化剂进行了表征,优化了纳米催化剂的制备条件,并分别在紫外光和可见光照下以降解含罗丹明B(Rh B)的印染废水评价其光催化降解性能。结果表明,以β-CD为模板剂制备的纳米复合催化剂粒径更小,Pr-TiO_2在紫外、可见光下的脱色率分别达92%和97%以上,较TiO_2催化剂的性能有所提高。Nanocomposite catalysts of TiO2 and Pr-TiO2 was prepared by sol-gel method using β-cyclo- dextrin （β-CD） as template. X-ray diffraction （XRD）, scanning electron microscopy （SEM）, Fourier transform in-frared spectroscopy （FT-IR） and N2 adsorption-desorption were used for catalyst characterization. And the preparation conditions of nanocomposite catalyst were investigated. The photocatalytic activities of prepared nanocomposites were investigated by the degradation of Rhodamine B （RhB） dye wastewater under the illumi- nation of UV and visible light, respectively. The results showed that the particle size of nanocomposite catalyst with β-CD template was smaller, and the decoloration rate of Pr-TiO2 nanocomposite formed by the above method was more than 92% and 97% under UV and visible light irradiation, respectively. Compared with the photocatalytic performance of TiO2, they exhibited high activity.

关 键 词：二氧化钛 光催化 Β-CD 降解 

分 类 号：X788[环境科学与工程—环境工程]