Preparation of silver spheres by aggregation of nanosize subunits
Preparation of silver spheres by aggregation of nanosize subunits
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DOI：
10.1557/jmr.2008.0219
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发表时间：
2008-06
影响因子：
2.7
通讯作者：
I. Halaciuga;D. Goia
中科院分区：
文献类型：
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作者：
I. Halaciuga;D. Goia
通过快速混合浓异抗坏血酸和银-多胺络合物溶液，在不存在保护胶体的情况下制备分散均匀的球形银颗粒。通过改变胺的性质、温度、反应物的浓度、银/胺的摩尔比以及银盐的性质，可以在宽范围（80 nm至1.3 μm）内定制所得金属颗粒的尺寸。银球形成的聚集的纳米尺寸的亚基，其中的存在下，通过电子显微镜和X-射线衍射检测。由于其简单性、高金属浓度和不存在聚合物分散剂，所述方法代表了制造用于电子应用的成本有效地分散的均匀银颗粒的有利途径。
Dispersed uniform spherical silver particles were prepared in the absence of a protective colloid by rapidly mixing concentrated isoascorbic acid and silver-polyamine complex solutions. By varying the nature of the amine, temperature, concentration of reactants, silver/amine molar ratio, and the nature of the silver salt, it was possible to tailor the size of the resulting metallic particles in a wide range (80 nm to 1.3 μm). The silver spheres were formed by aggregation of nanosize subunits, the presence of which was detected by both electron microscopy and x-ray diffraction. Due to its simplicity, high metal concentration, and the absence of polymeric dispersants, the described method represents an advantageous route to manufacture cost-effectively dispersed uniform silver particles for electronic applications.