Evolution of size and shape of gold nanoparticles during long-time aging
The evolution of size and shape of gold nanoparticles was studied during long-time aging. The initial
particle size of 2e5 nm increased to about 25 nm in one year of storage. It was revealed that the main
mechanism of particle growth is Ostwald ripening, however, fusion of particles was also observed.
Additionally, while the initial particles have spherical morphology, the grown particles show various
shapes such as sphere, bipyramid, decahedron, deca-tetrahedron, triangular plate and rod. Twin
boundaries with large frequency ofw5% were detected inside the particles which have an important
effect on the evolution of morphology. This study suggests that aging may be a new way of tuning size
and shape of gold nanoparticles
Title:
Evolution of size and shape of gold nanoparticles during long-time aging | |
Authors: | Gubicza, Jeno Labar, Janos L. Luu, Manh Quynh |
Keywords: | Nanostructures Crystal growth Electron microscopy (STEM, TEM and SEM) Aging |
Issue Date: | 2013 |
Publisher: | ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND |
Citation: | ISIKNOWLEDGE |
Abstract: | The evolution of size and shape of gold nanoparticles was studied during long-time aging. The initial particle size of 2e5 nm increased to about 25 nm in one year of storage. It was revealed that the main mechanism of particle growth is Ostwald ripening, however, fusion of particles was also observed. Additionally, while the initial particles have spherical morphology, the grown particles show various shapes such as sphere, bipyramid, decahedron, deca-tetrahedron, triangular plate and rod. Twin boundaries with large frequency ofw5% were detected inside the particles which have an important effect on the evolution of morphology. This study suggests that aging may be a new way of tuning size and shape of gold nanoparticles |
Description: | MATERIALS CHEMISTRY AND PHYSICS Volume: 138 Issue: 2-3 Pages: 449-453 Published: MAR 15 2013 ; TNS07314 |
URI: | http://www.sciencedirect.com/science/article/pii/S0254058413000564 http://repository.vnu.edu.vn/handle/VNU_123/32824 |
ISSN: | 0254-0584 |
Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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