Small gold nanoparticles as crystallization "catalysts": Effect of seed size and concentration on Au-ZnO hetero nanoparticles
Data(s) |
02/09/2015
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Resumo |
This work reports the effect of seed nanoparticle size and concentration effects on heterogeneous crystal nucleation and growth in colloidal suspensions. We examined these effects in the Au nanoparticle-seeded growth of Au-ZnO hetero-nanocrystals under synthesis conditions that generate hexagonal, cone-shaped ZnO nanocrystals. It was observed that small (~ 4 nm) Au seed nanoparticles form one-to-one Au-ZnO hetero dimers and that Au nanoparticle seeds of this size can also act as crystallization ‘catalysts’ that readily promote the nucleation and growth of ZnO nanocrystals. Larger seed nanoparticles (~9 nm, ~ 11 nm) provided multiple, stable ZnO-nucleation sites, generating multi-crystalline hetero trimers, tetramers and oligomers. |
Formato |
application/pdf |
Identificador | |
Publicador |
American Chemical Society |
Relação |
http://eprints.qut.edu.au/87573/3/87573a.pdf DOI:10.1021/acs.cgd.5b00619 Fernando, Joseph F. S., Shortell, Matthew P., Vernon, Kristy C., Jaatinen, Esa A., & Waclawik, Eric R. (2015) Small gold nanoparticles as crystallization "catalysts": Effect of seed size and concentration on Au-ZnO hetero nanoparticles. Crystal Growth and Design, 15(9), pp. 4324-4330. AOARD/FA2386-14-1-4056 |
Direitos |
Copyright 2015 American Chemical Society This document is the Accepted Manuscript version of a Published Work that appeared in final form in Crystal Growth and Design, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acs.cgd.5b00619 |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #030306 Synthesis of Materials #030307 Theory and Design of Materials #091202 Composite and Hybrid Materials #hybrid materials #gold-zinc oxide #heterogeneous nucleation #heteronanoparticles |
Tipo |
Journal Article |