Sonochemical preparation of gold nanoparticles: Comparison with the thermal reduction system

Yuzuru Shimazaki, Chiyoko Ando, Shu Saeki, Yoshio Kobayashi, Mikio Konno

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Comparison was made for the citrate stabilized gold colloids prepared sonochemically and thermally. In the sonochemical reduction system, purge gas had large influence on the formation of gold nanoparticles, while little effect was observed for the thermal reduction system. The average diameter of sonochemically prepared gold nanoparticles was smaller than that of thermally prepared gold nanoparticles when prepared at the same concentrations of HAuCl4 and Na3 citrate. The average diameter of the sonochemically prepared gold nanoparticles was increased with an increase in the HAuCl4 concentration ([Na3 citrate]/[HAuCl4] = 7), while the average diameter of the thermally prepared gold colloid was independent of the HAuCl4 concentration. These results were explained by the difference in the reduction rate of gold ions.

Original languageEnglish
Pages (from-to)847-853
Number of pages7
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume40
Issue number10
DOIs
Publication statusPublished - 2007 Oct 20

Keywords

  • Citric acid
  • Gold nanoparticles
  • Sonochemistry

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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