The importance of the CTAB surfactant on the colloidal seed-mediated synthesis of gold nanorods

被引：361
|
作者：
Smith, Danielle K. [1 ]
Korgel, Brian A. [1 ]
机构：
[1] Univ Texas Austin, Dept Chem Engn, Texas Mat Inst, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA
来源：
LANGMUIR | 2008年 / 24卷 / 03期
基金：
美国国家卫生研究院;
关键词：
D O I：
10.1021/la703625a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Gold nanorods were synthesized by the colloidal seed-mediated, surfactant-assisted approach [Gou et at., Chem. Mater. 2005,17,3668-3672] using CTAB (hexadecylcetyltrimethylammonium bromide) obtained from ten different suppliers. The yield of gold nanorods depended strongly on the CTAB used: with the same recipe, three of the CTABs did not yield nanorods and produced only spherical gold particles, whereas the other CTABs yielded nanorods with nearly 100% yield. These results suggest that an impurity in the CTAB is very important for nanorod formation.
引用
收藏
页码：644 / 649
页数：6
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