Synthesis of worm like silver nanoparticles in methyl cellulose polymeric matrix and its catalytic activity
Synthesis of worm like silver nanoparticles in methyl cellulose polymeric matrix and its catalytic activity
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DOI：
10.1016/j.carbpol.2012.04.017
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发表时间：
2012-07-01
影响因子：
11.2
通讯作者：
Misra, Ajay
中科院分区：
文献类型：
--
作者：
Bhui, Dipak Kumar;Misra, Ajay
在甲基纤维素基质中，一种简便的一步合成蠕虫状银纳米粒子的方法已经实现。合成是基于在甲基纤维素（MC）水溶液中，硼氢化钠（NaBH₄）对硝酸银（AgNO₃）的还原。合成的纳米粒子在尺寸上大多是单分散的，并且通过改变硝酸银的浓度来控制它们的聚集。使用透射电子显微镜（TEM）、紫外 - 可见光谱和X射线衍射（XRD）技术对银纳米粒子进行分析。已经发现硝酸银的浓度对银纳米结构的形态有显著影响。与球形纳米粒子相比，蠕虫状纳米结构在对硝基苯酚的硼氢化钠还原反应中表现出优异的催化活性。（C）2012爱思唯尔有限公司。保留所有权利。
A facile one step method for the synthesis of wormlike silver nanoparticles has been carried out in methyl cellulose matrix. Synthesis is based on the reduction of AgNO3 by sodium borohydride (NaBH4) in aqueous methyl cellulose (MC). Synthesized nanoparticles are mostly mono disperse in size and their aggregation is controlled by varying the concentration of AgNO3. Silver nanoparticles are analyzed using transmission electron microscope (TEM), UV-vis spectroscopy and X-ray diffraction (XRD) technique. It has been found that the concentration of AgNO3 has a significant effect on the morphology of Ag nanostructures. Worm like nanostructures showed excellent catalytic activity in the borohydride reduction of p-nitrophenol compared to spherical shaped nanoparticles. (C) 2012 Elsevier Ltd. All rights reserved.