【作者】 姜艳丽； 刘惠玲； 田玫； 杨丽娟； 崔瑞海； 姜兆华；

【Author】 JIANG Yan-li~(1,2,3) LIU Hui-ling~2 TIAN Mei~3 YANG Li-juan~3 CUI Rui-hai~(1,3) JIANG Zhao-hua (1.Department of Applied Chemistry,Harbin Institute of Technology,Harbin 150090,China;2.Department of Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China;3.Department of Life Science and Chemistry,Harbin College,Harbin 150086,China)

【机构】 哈尔滨工业大学应用化学系； 哈尔滨工业大学市政环境工程学院； 哈尔滨学院生命科学与化学学院；

【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/Ti 催化剂为基体,用离子溅射法将贵金属 Pt 沉积到 TiO₂/Ti 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/Ti 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．更多还原

【Abstract】 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.更多还原