核/壳结构铜镍合金/碳复合纳米粒子制备及表征  

Preparation and characterization of copper nickel alloy/carbon composite nanoparticles with core/shell structure

作　　者：唐浩奎[1] 薛俊[1] 陈树存[1] 向后奎[1] 李儒[1] 王学华[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12期55-58,62,共5页Journal of Wuhan Institute of Technology

基　　金：国家863计划课题(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);湖北省教育厅科学研究项目(D20091505)

摘　　要：以蔗糖为碳源，硝酸铜和硝酸镍为金属源，通过溶液混合、蒸干，500℃碳化，900℃退火，浓硝酸浸泡超声纯化获得了具有核壳结构的铜镍合金／碳纳米粒子复合材料．X射线衍射分析表明样品由CuNi合金和有一定程度石墨化的碳组成；高分辨透射电镜观察揭示样品具有核壳结构，核为fcc型铜镍合金纳米粒子，尺寸在20nm左右，碳壳在10～15层；综合热分析表明样品的碳壳提高了铜镍合金纳米粒子的抗氧化性能．Copper nickel alloy/carbon composite nanoparticles with core/shell structure were successfully prepared by mixing, evaporation, carbonization in 500 ℃, annealing in 900 ℃, concentrated nitric acid total immersed, ultrasound purified methods under the simple and mild conditions, in which sucrose functioned as carbon precursor, copper nitrate hydrate and nickel nitrate used for source of the metal nanoparticles. The as-obtained sample was investigated by XRD. The results suggested that the sample consists of copper nickel alloy and graphitized carbon to some extent. TEM analysis indicated that the core/shell structure consists of a fcc-CuNi alloy core with size about 20 nm and a graphitic shell with size about 10-15 layers;Thermoanalysis showed carbon shell of the sample increased antioxygenic property of the copper nickel alloy nanoparticles.

关 键 词：核/壳结构 铜镍合金 纳米粒子 蔗糖 

分 类 号：Q611.4[生物学—生物物理学] Q653