Fabrication of Flower-Like Silver Structures through Anisotropic Growth

被引：84

作者：

Liu, Tao ^{[1
,2
]}

Li, Dongsheng ^{[1
,2
]}

Yang, Deren ^{[1
,2
]}

Jiang, Minhua ^{[3
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Shandong Univ, State Key Lab Crystal Growth, Jinan 250100, Peoples R China

来源：

LANGMUIR | 2011年 / 27卷 / 10期

关键词：

ENHANCED RAMAN-SCATTERING; SEED-MEDIATED GROWTH; FACILE SYNTHESIS; NANOPARTICLES; NANOSTRUCTURES;

D O I：

10.1021/la200512m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using a simple chemical reaction, a new nanostructure of silver, which we call a "flower-like silver structure", is produced. The flower-like silver structure consists of a silver core and many rod-like tips protruding out in three dimensions. Besides common face-centered-cubic (FCC) phase of silver, there exists hexagonal-close-packed (HCP) phase in these tips. The appearance of HCP silver is the result of rapid growth of silver nuclei when using CH2O or C2H4O as the reducing agent. The formation of the rod-like tips is caused by the anisotropic growth determined by the HCP phase and the directing role of formic acid, which is the oxidation product of CH2O. It is also found that the concentration of reactants, the kind of reducing agents and the sequence of adding reactants can influence the morphology and phase constitution of the final products.

引用

页码：6211 / 6217

页数：7

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