通过十二烷基硫酸钠合成具有可控尺寸的高度多面的五边形和六边形金纳米颗粒。

Synthesis of highly faceted pentagonal- and hexagonal-shaped gold nanoparticles with controlled sizes by sodium dodecyl sulfate.

作者信息

Kuo Chun-Hong, Chiang Tian-Fu, Chen Lih-Juann, Huang Michael H

机构信息

Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.

出版信息

Langmuir. 2004 Aug 31;20(18):7820-4. doi: 10.1021/la049172q.

DOI:10.1021/la049172q

PMID:15323536

Abstract

We report the synthesis of pentagonal- and hexagonal-shaped gold nanoparticles with controlled diameters ranging from 5 to 50 nm. These nanoparticles were prepared by a seeding growth approach. Sodium dodecyl sulfate (SDS) molecules served as the capping agent to restrict the particle size. In addition, the formation of highly faceted gold nanoparticles may be facilitated by the possibly ineffective capping interactions between the lamellar micellar structures formed by the SDS molecules and the gold nanoparticles. The crystal structure of the highly faceted particles was found to consist of mostly [111] surfaces as particle size increases, as revealed by both TEM and XRD results.

摘要

我们报道了直径可控在5至50纳米范围内的五边形和六边形金纳米颗粒的合成。这些纳米颗粒通过种子生长法制备。十二烷基硫酸钠（SDS）分子作为封端剂来限制颗粒大小。此外，SDS分子形成的层状胶束结构与金纳米颗粒之间可能无效的封端相互作用，可能有助于形成高度多面的金纳米颗粒。透射电子显微镜（TEM）和X射线衍射（XRD）结果均表明，随着颗粒尺寸的增加，高度多面颗粒的晶体结构主要由[111]面组成。