TiO_2-石墨烯光催化剂:制备及引入石墨烯的方法对光催化性能的影响  

TiO_2-Graphene Photocatalyst:Preparation and Effect of the Introducation of Graphene on Photocatalytic Performance

作　　者：耿静漪[1,2] 朱新生[1] 杜玉扣[2] 

机构地区：[1]苏州大学纺织与服装工程学院,苏州215123 [2]苏州大学化学化工学院,苏州215123

出　　处：《无机化学学报》2012年第2期357-361,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51073114)资助项目

摘　　要：利用溶胶-凝胶法原位制备了二氧化钛/石墨烯(TiO2-GE)复合光催化剂,研究了纯TiO2以及不同方法制备的TiO2-GE复合光催化剂对亚甲基蓝及罗丹明B光催化降解性能。结果表明:石墨烯的引入提高了TiO2的光催活性,这主要是得益于石墨烯优异的电子传输性能及较好吸附特性。不同方法制备TiO2-GE复合催化剂的光催化活性也存在较大差别。原位制备的TiO2-GE复合光催化剂表现出最佳的光催化活性。Titania/graphene（TiO2-GE） composite photocatalyst has been in-situ synthesized by sol-gel method.The photocatalytic performance of pure TiO2 and TiO2-GE composite obtained by different methods has been investigated using the photodegradation of methylthionine chloride and rhodamine B as model reactions.The results show that the photocatalytic activity of TiO2-GE composite is much higher than that of pure TiO2 due to rapid electronic transmission and the good adsorption of GE.Additionally,the as-prepared TiO2-GE composites obtained with different preparation methods have different activities in the photodegradation of methylthionine chloride and rhodamine B.The TiO2-GE composite synthesized by in-situ sol-gel method shows the highest photocatalytic activity.

关 键 词：溶胶-凝胶法 TiO2-GE 光催化活性 

分 类 号：O643.3[理学—物理化学] O643.36[理学—化学]