离子溅射沉积法制备Pt-TiO2／Ti催化剂及其性能研究  

Preparation and properties of Pt-TiO2/Ti catalyst by ion sputtering method

作　　者：姜艳丽[1,2,3] 刘惠玲[2] 田玫[3] 杨丽娟[3] 崔瑞海[1,3] 姜兆华[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150090 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [3]哈尔滨学院生命科学与化学学院,黑龙江哈尔滨150086

出　　处：《功能材料》2007年第A07期2412-2414,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（50678044）;哈尔滨市青年科学研究基金资助项目（2004AFQXJ011）;黑龙江省教育厅科学技术研究资助项目（10553034）;黑龙江省普通高等学校青年学术骨干支持计划资助项目（1151G080）

摘　　要：为了提高TiO2催化剂的光催化活性，拟对其进行改性研究，以阳极氧化法制备的TiO2用催化剂为基体，用离子溅射法将贵金属Pt沉积到TiO2用催化剂，利用SEM、EDS、XRD等测试技术对样品的形貌、元素组成、晶型等进行表征，以腐殖酸作为目标物质，对其光催化活性进行研究。研究结果表明，离子溅射法制备的Pt-TiO2用催化剂膜表面的Pt微粒呈现均匀单分散状态，与膜的附着力强，物相组成以锐钛矿TiO2为主，含少量金红石TiO2，光催化活性优于TiO2／Ti催化剂。In order to improve the photocatalytic activity of TiO2 catalyst, modification of TiO2 is carried out in the paper. Noble metal Pt is deposited on the surface of anodized TiO2/Ti ceramic film by ion sputtering. Surface morphology, the distribution of elements and their quantity in the film, the constitutional phases and their crystal structure in Pt-TiO2/Ti catalyst are investigated by scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS） and X-ray diffraction （XRD）. The photocatalytic activity is compared through the effect of the films on photocatalytic degradation rate of the humic acid. The results show that Pt on the Pt-TiO2/Ti film by ion sputtering disperses more evenly, and Pt particles are more strongly combined with the film. The phases of the film is composed of anatase TiO2 and rutile TiO2, which anatase TiO2 is the major phase in the catalyst. The photocatalytic activity of Pt-TiO2/Ti is better than that of TiO2/Ti catalyst.

关 键 词：Pt-TiO2/Ti催化剂 离子溅射法 光催化降解 腐殖酸 

分 类 号：X703[环境科学与工程—环境工程] O621.146[理学—有机化学]