A vapor-solid strategy to silica sheathed metal nanostructures and microstructures via reactions of metal chlorides with silicon.
A vapor-solid strategy to silica sheathed metal nanostructures and microstructures via reactions of metal chlorides with silicon.
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通过金属氯化物与硅的反应形成二氧化硅包覆的金属纳米结构和微观结构的气固策略。
DOI：
10.1021/jp055139g
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Yadong Li
中科院分区：
文献类型：
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作者：
Jin Wang;Haoxu Zhang;J. Ge;Yadong Li
发展了一种简单的气-固相方法来制备形状可控的二氧化硅包层金属微/纳米结构。作为例子，合成了硅鞘镍纳米线(直径约50 nm)、微立方体(边长1-3微米)、具有外延尾巴的纳米立方体(边长约200 nm)、纳米颗粒的一维组装结构(直径100 nm)以及二氧化硅包裹的钴和铜微/纳米结构。讨论了Ni/SiO_2结构可能的反应和生长机制。预计该方法将适用于更广泛的金属。
A facile vapor-solid strategy has been developed to prepare silica-sheathed metal micro/nanostructures with controllable shapes. As examples, silica-sheathed nickel nanowires (diameter approximately 50 nm), microcubes (edge length 1-3 microm), nanocubes (edge length approximately 200 nm) with an epitaxial tail (diameter<100 nm), and 1D assembly structures of nanoparticles (particle diameter<100 nm) as well as silica-sheathed cobalt and copper micro/nanostructures are synthesized. The possible reaction and growth mechanisms of Ni/SiO2 structures are discussed. The method is expected to be applied to a wider range of metals.