Controlled Growth of Sonochemically Synthesized Gold Seed Particles in Aqueous Solutions Containing Surfactants

Kenji Okitsu; Boon Mian Teo; Muthupandian Ashokkumar; Franz Grieser

doi:10.1071/CH05115

RESEARCH ARTICLE

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Controlled Growth of Sonochemically Synthesized Gold Seed Particles in Aqueous Solutions Containing Surfactants

Kenji Okitsu ^A ^B , Boon Mian Teo ^B , Muthupandian Ashokkumar ^B ^C and Franz Grieser ^B

+ Author Affiliations

- Author Affiliations

^A Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan.

^B School of Chemistry, University of Melbourne, Melbourne VIC 3010, Australia.

^C Corresponding author. Email: masho@unimelb.edu.au

Australian Journal of Chemistry 58(9) 667-670 https://doi.org/10.1071/CH05115
Submitted: 11 May 2005 Accepted: 21 June 2005 Published: 21 September 2005

Abstract

Gold seed particles stabilized by citric acid were prepared by the sonochemical reduction of Au(iii) ions in aqueous solutions. These seed particles were grown by the reduction of adsorbed Au(iii) ions by ascorbic acid in aqueous solutions containing cationic surfactants, dodecyltrimethylammonium bromide (C₁₂TAB), hexadecyltrimethylammonium bromide (C₁₆TAB) and didodecyldimethylammonium bromide (DDDAB). The rate of reduction of Au(iii) ions during the seed-growth process was found to be strongly dependent upon the type and concentration of the cationic surfactants. The presence of Ag(i) in the growth solution containing DDDAB affected the size distribution of the gold particles.

Acknowledgments

K.O. acknowledges the support from 21st century COE program of Japan Society for the Promotion of Science (JSPS) and the Japanese Ministry of Education, Culture, Sport, Science and Technology. The authors would like to acknowledge partial financial support from the University of Melbourne (International Collaborative Research Grant). Infrastructure facilities were provided by the Particulate Fluids Processing Centre (SRC-ARC). The authors thank Joan Clark for her assistance with the TEM measurements.

References

Controlled Growth of Sonochemically Synthesized Gold Seed Particles in Aqueous Solutions Containing Surfactants

Abstract

Acknowledgments

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