A Facile, Water-Based Synthesis of Highly Branched Nanostructures of Silver
A Facile, Water-Based Synthesis of Highly Branched Nanostructures of Silver
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DOI：
10.1021/la8020904
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发表时间：
2008-10-21
期刊：
影响因子：
3.9
通讯作者：
Xia, Younan
中科院分区：
文献类型：
--
作者：
Wang, Yilong;Camargo, Pedro H. C.;Xia, Younan
我们报道了一种简便、环保的方法来制备高度支化的银纳米结构。用L-抗坏血酸在水溶液中还原硝酸银，几分钟内就能形成珊瑚状的银粒子。对生长过程的机理研究表明，银枝是从聚集形成的球茎种子中生长出来的，并且通过改变试剂的浓度，可以改变粒子的分枝程度。由于其潜在的高比表面积，这些分支结构可以用作催化剂或表面增强拉曼散射应用的基质。
We report a facile and environmentally friendly method of preparing highly branched silver nanostructures. By reducing AgNO3 with L-ascorbic acid in an aqueous solution, silver particles having a coral-like morphology were formed in a few minutes. A mechanistic study of the growth process revealed that the silver branches grew from a bulbous seed formed through aggregation, and that by changing the concentrations of the reagents, the degree of particle branching could be altered. With their potentially high surface areas, these branched structures could find use as catalysts or as substrates for surface-enhanced Raman scattering applications.