Physics – Condensed Matter – Materials Science
Scientific paper
2007-12-29
Physics
Condensed Matter
Materials Science
Scientific paper
In this paper we report on the reactivity of adsorbed cyanide deriving from ligand release during metal electrodeposition from cyanocomplex solutions of Au(I), Au(III), Ag(I) and Cu(I) in H2O and D2O. When CN is adsorbed at cathodic potentials in excess of the HER threshold, metal-dependent reactivity can be detected by SERS. Finite surface coverages with adsorbed CN at such cathodic potentials can be obtained only if CN is delivered directly to the cathode surface as by decomplexing of the cyanocomplexes of the metals undergoing cathodic reduction. In Au(I) and Au(III) baths, Au-CN reacts with Au-H and is hydrogenated to adsorbed CH2=NH and CH3-NH2. In Ag(I) baths, Ag-CN reacts with Ag-H giving rise to polycyanogens. No reactivity of Cu-CN was found, under otherwise identical conditions. Our conclusions are supported also by dedicated DFT molecular computations.
Bozzini Benedetto
DUrzo Lucia
Mele Claudio
Romanello Vincenzo
No associations
LandOfFree
A SERS Investigation of Cyanide Adsorption and Reactivity during the Electrodeposition of Gold, Silver and Copper from Aqueous Cyanocomplexes Solutions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A SERS Investigation of Cyanide Adsorption and Reactivity during the Electrodeposition of Gold, Silver and Copper from Aqueous Cyanocomplexes Solutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A SERS Investigation of Cyanide Adsorption and Reactivity during the Electrodeposition of Gold, Silver and Copper from Aqueous Cyanocomplexes Solutions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-713869