A (surface-enhanced) Raman spectroscopic study of the adsorption of S2O32− and SCN− on a silver deposit

Raman and DFT study of the vibrational properties of some para‐substituted benzohydroxamic acids: towards an interpretation of SER spectra

“…Currently, surface-enhanced Raman spectroscopy (SERS) is one of the most promising and widely applied approaches to elucidate the adsorption geometry of molecules on metal surfaces. 11,12 It allows the investigation of bonding geometry by following the change in the vibrational wavenumbers of the pure compound upon its adsorption on the metal surface. It also permits one to do this in aqueous solutions.…”

Reduction of silver complexes: towards an ever more elaborated insight in the influence of the type of ligand on the reaction rate

“…Extensive research work has already been carried out on the electrochemical reduction of silver complexes in imaging processes, using a variety of electrochemical and spectroscopic methods and data treatment techniques [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The major part of the investigations has been sacrificed to the most commonly used silver complexant in the classical processing, i.e., thiosulphate (S 2 O 2À 3 ), but alternatives such as thiocyanate, (SCN À ), or some thioethers -like 1,8-dihydroxy-3,6-dithiaoctane (DTO) -have also been studied.…”

“…The major part of the investigations has been sacrificed to the most commonly used silver complexant in the classical processing, i.e., thiosulphate (S 2 O 2À 3 ), but alternatives such as thiocyanate, (SCN À ), or some thioethers -like 1,8-dihydroxy-3,6-dithiaoctane (DTO) -have also been studied. A state of the art description of the mechanism and kinetics is found in [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. In the frame of the dry processes, completely different silver components like silver behenate (H 43 C 21 COOAg) are currently under investigation.…”

Coadsorption of trimethyl phosphine and thiocyanate on colloidal silver: a SERS study combined with theoretical calculations

“…After coadsorption with TMP (the final concentration is 1.25 × 10 −3 M), the wavenumber of C N stretching mode conversely red shifts to 2121 cm −1 . As proved by previous works of Tielens et al [32] and Gonnissen et al, [56] SCN − adsorbs on silver surface via its S atom and C N bond does not directly interact with silver surface. This indicates that the SCN − molecule has special structure, which may result in the wavenumber shift.…”