Open Access Nano Express

Coalescence Behavior of Gold Nanoparticles

YQ Wang*, WS Liang and CY Geng

Author Affiliations

The Cultivation Base for State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, People’s Republic of China

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Nanoscale Research Letters 2009, 4:684-688  doi:10.1007/s11671-009-9298-6

Published: 20 March 2009

Abstract

The tetraoctylammonium bromide (TOAB)-stabilized gold nanoparticles have been successfully fabricated. After an annealing of the as-synthesized nanoparticles at 300 °C for 30 min, the coalescence behavior of gold nanoparticles has been investigated using high-resolution transmission electron microscopy in detail. Two types of coalescence, one being an ordered combination of two or more particles in appropriate orientations through twinning, and the other being an ordered combination of two small particles with facets through a common lattice plane, have been observed.

Keywords:
Gold nanoparticles; Coalescence; Faceting