The importance of the CTAB surfactant on the colloidal seed-mediated synthesis of gold nanorods
The importance of the CTAB surfactant on the colloidal seed-mediated synthesis of gold nanorods
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DOI：
10.1021/la703625a
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发表时间：
2008-02-05
期刊：
影响因子：
3.9
通讯作者：
Korgel, Brian A.
中科院分区：
文献类型：
--
作者：
Smith, Danielle K.;Korgel, Brian A.
采用胶体种子介导、表面活性剂辅助的方法合成了金纳米棒[Gou et at]。,化学。化学学报，2005,17(6):668- 672]，使用从10个不同供应商获得的CTAB（十六烷基十六烷基三甲基溴化铵）。金纳米棒的产率很大程度上取决于所使用的CTAB：在相同的配方下，三种CTAB不能产生纳米棒，只能产生球形的金颗粒，而其他CTAB产生的纳米棒的产率接近100%。这些结果表明，CTAB中的杂质对纳米棒的形成非常重要。
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.