Self-organized formation of silver nanowires, nanocubes and bipyramids via a solvothermal method
Self-organized formation of silver nanowires, nanocubes and bipyramids via a solvothermal method
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通过溶剂热法自组织形成银纳米线、纳米立方体和双锥体
DOI:
10.1016/j.actamat.2008.01.043
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发表时间:
2008-06
期刊:
影响因子:
9.4
通讯作者:
中科院分区:
文献类型:
--
作者:
Three kinds of silver nanostructures – nanowires, nanocubes and bipyramids – were synthesized via a simple solvothermal method by reducing silver nitrate with ethylene glycol using poly(vinylpyrrolidone) as an adsorption agent and adding different concentrations of sodium chloride (NaCl) into the solution. When a low-concentration NaCl solution is used, trace amounts of silver chloride (AgCl) appear and act as the seeds to facilitate the formation of the silver nanowires. However, when a high-concentration NaCl solution is used, large amounts of AgCl appear and mainly act as the controlling agent leading to the formation of silver nanocubes and bipyramids. Electron microscopy, X-ray diffraction and absorption spectra have been used to investigate the products, and a mechanism is proposed to interpret the morphological control of these structures. Our work provides a strategy to fabricate silver nanostructures with different shapes.
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