Sonochemical formation of colloidal platinum

Authors
Caruso, RA Ashokkumar, M Grieser, F
Citation
Ra. Caruso et al., Sonochemical formation of colloidal platinum, COLL SURF A, 169(1-3), 2000, pp. 219-225
Citations number
31
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN journal
09277757 → ACNP
Volume
169
Issue
1-3
Year of publication
2000
Pages
219 - 225
Database
ISI
SICI code
0927-7757(20000910)169:1-3<219:SFOCP>2.0.ZU;2-Y
Abstract
The ultrasound irradiation of aqueous solutions of PtCl62- was found to pro duce colloidal platinum of about 3 nm in diameter. The presence of aliphati c alcohols significantly enhanced the reduction process. It is shown that t he extent of reduction of PtCl62- in the presence of alcohol is directly re lated to the Gibbs surface excess of the alcohol at the air-water interface . The significance of this is discussed in relation to ultrasound induced c avitation in solution. (C) 2000 Elsevier Science B.V. All rights reserved.