包覆壳层对金属纳米粒子活性保护的研究进展  

Research Progress of the Reactivity Protection of Coating to Metallic Nanoparticles

作　　者：彭长春[1] 宋武林[1,2] 郭连贵[1] 陈亮[1] 段欢[1] 

机构地区：[1]华中科技大学材料科学与工程学院模具技术国家重点实验室,湖北武汉430074 [2]华中科技大学分析测试中心,湖北武汉430074

出　　处：《中国材料科技与设备》2008年第1期1-4,8,共5页Chinese Materials Science Technology & Equipment

基　　金：国家自然科学基金资助项目（50471061）

摘　　要：通过在金属纳米粒子表面包覆一层膜而形成核／壳结构，可以对金属纳米粒子的活性起到一定的保护作用，然而包覆层的保护效果会受到环境因素的影响。本文从湿度、酸碱度、老化时间三方面综述了环境因素对包覆壳层保护效果的影响，以及从热稳定性方面考察了包覆层的保护效果。并由此三方面和热稳定性方面提出了对包覆层的最佳选择，指出了今后的研究方向。The reactivity of metallic nanoparticles is well protected by coating them to form a core/shell structure, however, the protective effect will be affected by the environmental factors, the influence on the protective effect of the coating caused by the environmental factors, including humidity,PHvalue,ageing time, is reviewed;and the protective effect of coating about thermal stability is mentioned too. The optimal choice of coating is suggested by considering the three factors and thermal stability,and the research direction in the future are also indicated.

关 键 词：金属纳米粒子 核/壳结构 环境因素 热稳定性 

分 类 号：TJ763[兵器科学与技术—武器系统与运用工程]