一种简单的制备碳包覆金属Co纳米粒子的方法  

A simple and novel method of preparation carbon encapsulated Co nanoparticles

作　　者：陈树存[1] 薛俊[1] 李晶[1] 唐浩奎[1] 李儒[1] 曹宏[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074

出　　处：《武汉工程大学学报》2009年第3期52-55,59,共5页Journal of Wuhan Institute of Technology

基　　金：国家863计划资源环境技术领域专题课题(2007AA06Z205);国家自然科学基金项目(50774071/E0402);武汉工程大学青年科学基金(Q200804)

摘　　要：以亲水性较强的多糖（蔗糖、纤维素等）为碳源，钴的硝酸盐为金属源，通过500℃碳化，700～1000℃退火，浓硝酸浸泡纯化等工艺制备了碳包覆金属钴纳米颗粒．采用XRD、HRTEM等测试手段对产物的形态、组成和结构进行了表征，结果表明产物具有明显的Co／C核壳结构，金属Co核尺度为20～50nm，碳壳一般由十到二十几个石墨结构层组成．此外，还系统考察了制备过程主要工艺参数参数，如碳源与金属初始比例、退火温度、退火时间等对碳包覆Co纳米颗粒形成的影响．This paper used soluble polysaccharides （cellulose, sucrose, etc. ） as substrate, cobalt nitrate as source for the metal,through 500 ℃carbonation and 700-1000 ℃ heat to systhesize and characterize carbon-coated metal nanoparticles. By using XRD, HRTEM and other means to study the shape, composition and structure of the particles, the results showed that graphitic carbon-coated cobalt nanoparticles have a perfect structure, with cobalt core / graphite shell, graphite coating layer in a dozen or so,and particles＇ size between 20-50 nm. And the authors systematically inspected the preparation process and parameters, such as the amount of metal distribution, annealing temperatures and annealing time processing conditions on carbon-coated cobalt nanoparticles forming impact.

关 键 词：碳包覆 Co纳米粒子 蔗糖 纤维素 

分 类 号：Q611.4[生物学—生物物理学] Q653