浸渍-沉积法制备一维Au/TiO_2的光催化性能研究  

Preparation of One-dimensional Au/TiO_2 by Deposition-Precipitation Method and Their Catalytic Performance

作　　者：赵伟玲[1] 朱宝林[1] 董建勋[1] 宋娟娟[1] 胡晓静[1] 王淑荣[1] 张守民[1] 黄唯平[1] 

机构地区：[1]南开大学先进能源材料化学教育部重点实验室,天津300071

出　　处：《材料导报》2012年第6期27-30,共4页Materials Reports

基　　金：国家自然科学基金(21071086);高等学校博士学科点专向科研基金(200800551036);中央高校基本科研业务费专项资金(南开大学65010031);国家大学生创新性实验计划(091005508)

摘　　要：以钛酸纳米管为载体、HAuCl4为金前驱体,通过浸渍-沉积法制备一维金修饰TiO2光催化剂(Au/TiO2)。通过X射线衍射和紫外-可见漫反射吸收光谱研究材料的结构和性质。以甲基橙溶液作为模拟废液,研究Au/TiO2材料在紫外光条件下的光催化活性。研究表明,由于金可以接受电子,从而促进光生电子和光生空穴的分离,使TiO2的光催化活性提高;Au/TiO2的光催化活性还与金的含量密切相关,金的最佳负载量为1%(质量分数)。By using hydrogen titanate nanotubes as support and HAuCI1 as gold precursor, one-dimensional Au/TiO2 catalyst were prepared by deposition-precipitation method. The prepared materials were characterized with X-ray diffraction（XRD）, UV-visible diffuse reflectance spectra. By using methyl orange solution as wastewater, the photocatalytic activity of Au/TiO2 was investigated under irradiation of UV light. Photodegradation experimental re- sults of Au/TiO2 indicate that gold can enhance the photocatalytic activity of TiO2. During the photodegradation process, gold nanoparticles act as electron acceptors and prevent the recombination of photogenerated charge carriers. The photocatalytie activity of Au/TiO2 is influenced by the gold content. It is found that the activity is the highest when gold content is lwt%.

关 键 词：钛酸纳米管金浸渍沉积法光催化 

分 类 号：O611[理学—无机化学]