Investigation of Au electrodeposition from [BMP][TFSA] room-temperature ionic liquid containing K[Au(CN)2] by in situ two-dimensional sum frequency generation spectroscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Electroanalytical Chemistry Année : 2011

Investigation of Au electrodeposition from [BMP][TFSA] room-temperature ionic liquid containing K[Au(CN)2] by in situ two-dimensional sum frequency generation spectroscopy

Benedetto Bozzini
  • Fonction : Auteur
Bertrand Busson
Christophe Humbert
Claudio Mele
  • Fonction : Auteur
Patrizio Raffa
  • Fonction : Auteur
Abderrahmane Tadjeddine

Résumé

In this paper we report an in situ 2D visible-infrared sum frequency generation (VIS-IR SFG) study of the potentiostatic electrodeposition of gold from a solution containing [Au(CN) 2 ] À in 1-butyl-1-methyl-pyr-rolidinium bis(trifluoromethylsulfonyl) amide ([BMP][TFSA]), a room-temperature ionic-liquid (RTIL). We followed the potential-dependent co-adsorption of BMP + and CN À , released by reduction of the Au(I) complex, in the range-0.8 to À3.0 V vs. Au QRE. We found that the pyrrolidinium ring of BMP + reorients as a function of potential value and interaction mode with coadsorbed CN À. The Stark tuning of CN À shows that this pseudohalide can be adsorbed in two different ways, that can be correlated with the presence of Au(I) reduction intermediates at the dynamic electrodeposition interface.

Dates et versions

hal-02111093 , version 1 (13-05-2019)

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Benedetto Bozzini, Bertrand Busson, Christophe Humbert, Claudio Mele, Patrizio Raffa, et al.. Investigation of Au electrodeposition from [BMP][TFSA] room-temperature ionic liquid containing K[Au(CN)2] by in situ two-dimensional sum frequency generation spectroscopy. Journal of Electroanalytical Chemistry, 2011, 661 (1), pp.20-24. ⟨10.1016/j.jelechem.2011.07.004⟩. ⟨hal-02111093⟩
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