Ag/TiO_2纳米复合材料的制备及结构研究  

Study on Preparation and Structure of Ag/TiO_2 Nanocomposites

作　　者：闻明[1] 李旸[1] 李艳琼[1] 张俊敏[1] 管伟明[1] 

机构地区：[1]昆明贵金属研究所,云南昆明650106

出　　处：《贵金属》2010年第1期4-7,共4页Precious Metals

基　　金：云南省应用基础研究基金(2008CD201);云南省技术创新人才培养对象资助项目(2009CI081)

摘　　要：首先采用化学氧化在块体Ti表面制备出多孔纳米TiO2,随后通过高能离子束轰击实现Ag纳米粒子在TiO2表面的有效固定,最终在Ti表面制备出Ag/TiO2纳米复合材料。采用XRD、SEM及TEM手段对其进行了结构表征。结果表明,化学氧化法可制备出多孔纳米TiO2,其晶粒尺寸为10 nm左右;通过调节高能Ar离子束轰击的时间,可对TiO2晶粒尺寸进行小范围有效控制。In present study, porous nanocrystalline TiO2 was prepared firstly on surface of bulk Ti by chemical oxidation, and then Ag nanoparticles was effectively fixed on TiO2 by high energy Ar ion beam bombardment. Finally, Ag/TiO2 nanocomposites was formed on Ti surface. XRD, SEM and TEM were used for structure characterization. The results show that porous nanocrystalline TiO2 with grain size ≈ 10 nm could be prepared by chemical oxidation, and the grain size of TiO2 could be controlled by adjusting bombardment time.

关 键 词：复合材料 AG纳米粒子 多孔TiO2 

分 类 号：TQ134.11[化学工程—无机化工]