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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 3
BKCSDE 35(3)
March 20, 2014 

 
Title
The Effects of Ambient Ions on the Growth of Gold Nanoparticles by Laser Ablation in Liquid
Author
Hyejin Kwon, Kuk Ki Kim, Jae Kyu Song, Seung Min Park*
Keywords
Gold nanoparticles, Liquid laser ablation, Size control, Halide ions
Abstract
Gold nanoparticles (AuNPs) were synthesized by laser (Nd:YAG, λ = 1064 nm) ablation of a gold target immersed in various aqueous electrolyte solutions (7 mM of LiCl, NaCl, KCl, NaBr, and NaI) as well as in deionized water. The surface plasmon absorption and EDX of AuNPs so produced as well as their TEM images were analyzed to investigate the effects of ambient ions on the growth and aggregation of NPs. The size of AuNPs was reduced by laser ablation in the presence of chloride and bromide ions while it increased drastically when AuNPs were formed in iodide solution. Interestingly, triangular nanoplates were synthesized only in iodide solution. Surface chemistry on AuNPs in various electrolyte solutions was explored to elucidate the role of ions on the size and stability of AuNPs.
Page
865 - 870
Full Text
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