The Effects of Ambient Ions on the Growth of Gold Nanoparticles by Laser Ablation in Liquid

Bulletin of the Korean chemical society

Jae Kyu Song¹  Seung Min Park¹  Kuk Ki Kim¹  Hyejin Kwon¹ 

关键词: Gold nanoparticles;    Liquid laser ablation;    Size control;    Halide ions;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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.

【 授权许可】

Unknown