Polyol Synthesis of Silver Nanowires: An Extensive Parametric Study
Polyol Synthesis of Silver Nanowires: An Extensive Parametric Study
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DOI：
10.1021/cg200874g
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发表时间：
2011-11-01
影响因子：
3.8
通讯作者：
Unalan, Husnu Emrah
中科院分区：
文献类型：
--
作者：
Coskun, Sahin;Aksoy, Burcu;Unalan, Husnu Emrah
银纳米线已经通过多元醇方法合成。一个详细的参数研究确定的最终形态的产品和，温度，注射速率，聚（乙烯基吡咯烷酮）的摩尔比，硝酸银，氯化钠的量，和搅拌速率之间的关系。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）和X射线衍射（XRD）对所合成的银纳米线进行了分析。纳米线的形态和纵横比对合成参数的依赖性通过SEM图像显示。此外，发现纳米线直径随搅拌速率、聚（乙烯基吡咯烷酮）与硝酸银的摩尔比和温度而减小，并随注入速率而增大。氯化钠的缺乏及其过量的存在导致除了纳米线之外还形成具有不同尺寸的颗粒。此外，发现聚（乙烯基吡咯烷酮）与硝酸银的摩尔比影响所得纳米结构的形态，导致在高端和低端形成颗粒。本文的研究结果为优化多元醇自晶种法生长银纳米线提供了依据。
Silver nanowires have been synthesized by a polyol process. A detailed parametric study determining the relationship between final morphology of the products and,temperature, injection rate, molar ratio of poly(vinylpyrrolidone) to silver nitrate, sodium chloride amount, and stirring rate is presented. The as-synthesized silver nanowires are analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The dependency of nano-wire morphology and aspect ratio on synthesis parameters is shown via SEM images. Furthermore, the nanowire diameter is found to decrease with stirring rate, poly(vinylpyrrolidone) to silver nitrate molar ratio, and temperature and to increase with injection rate. The lack of sodium chloride and its presence in excess amounts resulted in the formation of particles with different sizes in addition to nanowires. In addition, poly(vinylpyrrolidone) to silver nitrate molar ratio is found, to affect the morphology of the resulting nanostructure, leading to formation of particles at high and low ends. The results reported in this paper provide a basis for optimizing silver nanowire growth through the self-seeding polyol method.