Facile Synthesis of Metallic Co Hierarchical Nanostructured Microspheres by a Simple Solvothermal Process
Facile Synthesis of Metallic Co Hierarchical Nanostructured Microspheres by a Simple Solvothermal Process
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DOI：
10.1021/jp8019182
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发表时间：
2008-06
影响因子：
3.7
通讯作者：
Luping Zhu;Wei-Dong Zhang;H. Xiao;Yang Yang-Yang;S. Fu
中科院分区：
文献类型：
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作者：
Luping Zhu;Wei-Dong Zhang;H. Xiao;Yang Yang-Yang;S. Fu
利用纳米棒、纳米带、纳米小片等纳米粒子在不同层次上构建层次化、复杂化的微/纳米结构已成为当前材料研究领域的热点。本研究采用简单的溶剂热法合成了金属钴多层纳米结构微球。用X射线衍射仪、扫描电子显微镜、透射电子显微镜、Brunauer−Emmett−Teller分析和振动样品磁强计对产物进行了表征。结果表明，由厚度约为20 nm、宽度为0.5−1.5µm的纳米片组装而成的Co分级纳米结构微球的直径为数微米，并在一系列对比实验的基础上提出了合理的形成机理。所合成的材料具有铁磁性和高比表面积，在催化剂等方面具有潜在的应用前景。
The fabrication of hierarchical and complex micro/nanostructures using nanoparticles such as nanorods, nanoribbons, nanoplatelets, etc. as building blocks at different levels has become a hot topic in recent material research fields. In this study, facile synthesis of metallic cobalt hierarchical nanostructured microspheres was reported by a simple solvothermal process. The as-obtained products were well characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer−Emmett−Teller analysis, and vibrating sample magnetometery. It was shown that the Co hierarchical nanostructured microspheres with a diameter of several micrometers are assembled from nanoplatelets with a thickness of about 20 nm and a width of 0.5−1.5 µm. A rational mechanism of formation was proposed on the basis of a range of contrasting experiments. The as-synthesized material exhibits ferromagnetic characteristics and a high surface area, showing potential applications for catalysts and other ...