Gold electrodeposition in organic media
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Journal ArticleDate:
2011Access:
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Lorena M.A. Monzon, Fiona Byrne, J.M.D. Coey, Gold electrodeposition in organic media, Journal of Electroanalytical Chemistry, 657, 1-2, 2011, 54-60Download Item:
Gold electrodeposition in organic media.pdf (Published (author's copy) - Peer Reviewed) 1.524Mb
Abstract:
Organic species are easily adsorbed onto metal electrodes, due to the high
surface energy. This principle is widely employed in electrodeposition to obtain
grains with a given shape and size. Electrodeposition in organic electrolytes and ionic
liquids is expected to produce deposits whose properties will be modified by the
nature of the species present in the bath. Here, we analyse the voltammetric profiles
for the reduction of two different gold complexes, tetrachloroaurate (III) ( ?
4 AuCl ) and
dicyanoaurate (I) ( ?
2 Au(CN) ), in dimethylsufoxide (DMSO) and in the ionic liquid
tributylmethylammonium bis(trifluoromethylsulfonyl)imide (TBMA+NTf2
-). We
evaluate how organic cations present in the electrolyte modify not only the
voltammetric response but also the morphology of the deposits obtained. The films
range from very smooth with a rms roughness of ~ 10 nm for 500 nm film to rough
globular or facetted films with a crystalline size of ~ 200 nm.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
OD/RFP/PHY2372
European Commission
NAMDIATREAM
Science Foundation Ireland (SFI)
05/IN/1850
Author's Homepage:
http://people.tcd.ie/jcoeyhttp://people.tcd.ie/aranzazl
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Series/Report no:
Journal of Electroanalytical Chemistry657
1-2
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Full text availableKeywords:
Physical chemistry, Condensed matter physics, thin films, tetrabutylammonium, shape-control agentSubject (TCD):
Nanoscience & MaterialsLicences: