玻璃纤维负载纳米TiO_2的制备及光催化性能  

Preparation and Photocatalytic Properties of Nano-titanium Dioxide Supported on Glass Fiber

作　　者：林中信[1,2] 万隆[1] 张世英[1,2] 李云龙[2] 方志薇[2] 

机构地区：[1]湖南大学材料科学与工程学院,长沙410082 [2]长沙学院生物工程与环境科学系,长沙410003

出　　处：《硅酸盐通报》2011年第1期136-139,146,共5页Bulletin of the Chinese Ceramic Society

基　　金：长沙市科技局重点项目(No.K0902205-11);湖南省高校科技创新团队"光催化工程技术"团队项目

摘　　要：采用浸渍-提拉法在玻璃纤维(GF)表面负载纳米TiO2,制备TiO2/GF复合光催化剂。通过X射线衍射(XRD)、热重-差热分析(TG-DSC)、扫描电镜(SEM)及能谱元素分析(EDS)对TiO2/GF复合光催化剂的结构进行了表征。结果表明,经550℃以下热处理,TiO2的晶型为锐钛矿相,随着热处理温度的升高,TiO2的晶型逐渐转化为金红石相。以亚甲基蓝的光催化降解为探针反应,评价TiO2/GF复合材料的光催化活性。复合材料的光催化降解活性与P25相当,且经多次使用后,复合光催化剂对亚甲基蓝的降解率仍保持在80%以上。TiO2 /GF composites were prepared by loading titania on the glass fiber with dipping method.The sample was characterized by X-ray diffraction（XRD）,thermogravimetric-differential scanning calorimeter（TG-DSC）,scanning electron microscope（SEM） and energy dispersive spectrometer（EDS） analysis technologies.The results show that when the calcination temperature below 550 ℃,the titania dioxide crystalline phase were anatase.The titania dioxide gradually transformed into rutile crystal phase with the increasing of the calcination temperatures.The photocatalytic activitie of TiO2 /GF composites were evaluated by the photocatalytic decomposition of methylene blue.The composites showed higher photocatalytic activities as P25 commercial pure titania dioxide nanoparticles.The decomposition of methylene blue was more than 80% after repeated use.

关 键 词：玻璃纤维 纳米二氧化钛 光催化 亚甲基蓝 

分 类 号：O643[理学—物理化学]