Cu/TiO_2/SiO_2纳米复合薄膜光催化降解氨气性能的研究  

Photocatalytic Properties of Cu/TiO_2/SiO_2 Nano-composite Films for Degrading Ammonia

作　　者：倪小敏[1] 张小俊[2] 金翔[1] 蔡昕[1] 肖修昆[1] 廖光煊[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室 [2]中国科学技术大学化学系,安徽合肥230026

出　　处：《环境科学与技术》2009年第11期44-47,71,共5页Environmental Science & Technology

基　　金：国家科技部科技支撑项目(2006BAK01B03)

摘　　要：采用溶胶-凝胶结合γ-射线辐射法制备了Cu/TiO2/SiO2纳米介孔复合薄膜。X-射线衍射(XRD),透射电子显微镜(TEM),紫外-可见光谱(UV-vis)及X-射线光电子能谱(XPS)表征显示单质金属铜与锐钛矿型TiO2纳米粒子较均匀地分布在非晶SiO2介孔基体的孔洞之中。光催化降解氨气的实验结果表明该三元复合薄膜具有良好的光催化性能,与未掺杂铜的TiO2/SiO2二元复合薄膜相比,铜纳米粒子的掺入可将其光催化性能提高18%以上。This paper presents the lab-scaled preparation of nano-sized composite film made of Cu/TiO2/SiO2 using a twostep sol-gel method assisted by γ-irradiation; and characterization of the prepared sample using a series of equipment such as XRD, TEM, XPS and Uv-is spectrum. The experiment on photocatalytic degradation of gaseous ammonia shows that this kind of composite film has better capacity - 18% higher in average than that of the film with no Cu nano-particle doped.

关 键 词：Cu/TiO2/SiO2 复合薄膜 氨气降解 光催化 

分 类 号：X132[环境科学与工程—环境科学]