Article (Scientific journals)
Preparation of stable suspensions of gold nanoparticles in water by sonoelectrochemistry
Aqil, Abdelhafid; Serwas, Harry; Delplancke, J. L. et al.
2008In Ultrasonics Sonochemistry, 15 (6), p. 1055-1061
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Keywords :
nanostructured material; smart colloid; metal nanoparticle
Abstract :
[en] Stable suspensions of gold nanoparticles in water were prepared with high yield by a novel one-step ultrasound assisted electrochemical process. Various strategies based on the addition of either tailor-made polymers or mixtures of commercially available polymers, in the electrochemical bath have been found successful to avoid nanoparticles aggregation commonly observed by sonoelectrochemistry. α-Methoxy-ω-mercapto-poly(ethylene oxide) or poly(vinyl pyrrolidone)/polyethylene oxide mixtures were able to build up a coalescence barrier around the gold nanoparticles. The results showed that the size of the gold nanoparticles could be easily tuned between 5 nm and 35 nm by simple control of the electrochemical parameters, i.e. the deposition time (TON) from 10 ms to 20 ms. The properties of as-prepared gold nanoparticles were compared to the ones of gold colloids prepared by the more conventional wet nanoprecipitation method using chemical reductive agents.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Aqil, Abdelhafid ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Serwas, Harry;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Delplancke, J. L.;  Université Libre de Bruxelles (ULB) > Service Matières et Matériaux
Jérôme, Robert ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Language :
English
Title :
Preparation of stable suspensions of gold nanoparticles in water by sonoelectrochemistry
Publication date :
September 2008
Journal title :
Ultrasonics Sonochemistry
ISSN :
1350-4177
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
15
Issue :
6
Pages :
1055-1061
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The "Région Wallonne" in the frame of the "NOMADE" program
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Commentary :
The authors acknowledge Ultrasonics Sonochemistry (Elsevier) for allowing them to archive this paper.
Available on ORBi :
since 20 February 2009

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