Synthesis and properties of highly stable nickel/carbon core/shell nanostructures
Synthesis and properties of highly stable nickel/carbon core/shell nanostructures
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DOI：
10.1016/j.carbon.2010.01.006
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发表时间：
2010-04
期刊：
影响因子：
10.9
通讯作者：
V. Sunny;D. Kumar;Y. Yoshida;M. Makarewicz;W. Tabiś;M. Anantharaman
中科院分区：
文献类型：
--
作者：
V. Sunny;D. Kumar;Y. Yoshida;M. Makarewicz;W. Tabiś;M. Anantharaman
报道了一种在相对较低的反应温度下获得高度稳定的碳包覆镍纳米结构的简单且具有成本效益的技术。进行热重分析以优化退火温度。粉末X射线衍射图显示对应于面心立方镍的峰。高分辨率透射电子显微镜照片显示形成了具有约5 nm厚的碳涂层的镍纳米结构。这是由拉曼光谱证实。镍/碳核/壳纳米结构的保质期超过一年，具有高热稳定性和优异的磁性能。该合成路线提供了大规模生产镍/碳纳米结构的范围。
A simple and cost effective technique for obtaining highly stable carbon coated nickel nanostructures at relatively low reaction temperatures is reported. Thermogravimetric analysis was carried out to optimize the annealing temperatures. The powder X-ray diffraction pattern reveals peaks corresponding to face centered cubic nickel. High resolution transmission electron micrograph shows the formation of nickel nanostructures with ∼5nm thick carbon coating. This is confirmed by Raman spectroscopy. The nickel/carbon core/shell nanostructures exhibited a shelf life of more than a year, with high thermal stability and excellent magnetic properties. This synthesis route provides scope for large scale production of nickel/carbon nanostructures.