屏蔽型单孪晶高指数金纳米粒子的合成。

Synthesis of shield-like singly twinned high-index Au nanoparticles.

机构信息

Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Republic of Singapore.

出版信息

Nanoscale. 2011 Apr;3(4):1497-500. doi: 10.1039/c1nr10053j. Epub 2011 Mar 8.

DOI:10.1039/c1nr10053j

PMID:21384055

Abstract

A new gold nanostructure--shield-like Au nanoparticles (NPs) with a single twin plane and high-index {hhl} facets--was discovered in a simple seed-mediated synthesis. The development of this new shape is believed to be due to the preferential adsorption of cetyltrimethylammonium cations (CTA(+)) on high-index facets and the coalescence of the NPs by the charge screening effect of NaCl. These shield-like Au NPs display some properties that are distinctively different from other types of Au NPs.

摘要

在一个简单的种子介导合成中发现了一种新的金纳米结构——具有单个孪晶面和高指数{hhl}面的盾状金纳米粒子（NPs）。这种新形状的发展据信是由于十六烷基三甲基铵阳离子（CTA(+））优先吸附在高指数面上，以及通过 NaCl 的电荷屏蔽效应使 NPs 合并。这些盾状 Au NPs 表现出一些与其他类型的 Au NPs 明显不同的性质。