Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore.
Nanoscale. 2010 Oct;2(10):1962-75. doi: 10.1039/c0nr00155d. Epub 2010 Aug 11.
In order for the nanoparticles of Au and Ag to be useful for a wide range of applications, the tailorability of the nanoparticle properties through controlled changes of composition, size, shape, and crystal structure is absolutely essential. Furthermore, these nanoparticle attributes must be delivered in high monodispersity to assure a consistent application performance. High monodispersity is also a requirement for the assembly of nanoparticles into extended nanostructures or mesoscale devices which may be needed for some applications. This article describes a variety of colloidal synthesis methods in use today for the preparation of monodisperse Au, Ag, and bimetallic Au-Ag nanoparticles. The emphasis is on the analysis of the efficacy of each method for tailoring the nanoparticle size and crystal structure. The scope of work surveyed is confined to quasi-spherical nanoparticles in the size range from sub-nanometre to several tens of nanometres.
为了使金和银的纳米粒子在广泛的应用中有用，通过控制组成、尺寸、形状和晶体结构的变化来调整纳米粒子性质是绝对必要的。此外，这些纳米粒子特性必须以高单分散性提供，以确保一致的应用性能。高单分散性也是将纳米粒子组装成扩展的纳米结构或介观器件的要求，某些应用可能需要这些结构或器件。本文介绍了当今用于制备单分散金、银和金银双金属纳米粒子的各种胶体合成方法。重点分析了每种方法在调整纳米粒子尺寸和晶体结构方面的效果。所调查的工作范围仅限于尺寸在亚纳米到几十纳米之间的准球形纳米粒子。
