화학공학소재연구정보센터
Journal of Electroanalytical Chemistry, Vol.622, No.1, 10-14, 2008
A.c. impedance behaviour of processes involving adsorption and reactivity of guanidonium-type cations at Pt(100) surface
The present paper reports a.c. impedance spectroscopic studies on adsorption of guanidonium (G(+)) and N,N-dimethylguanidonium (DMG(+)) resonant cations at Pt(100) single-crystal surface. The resulted information provided confirmation of the role of electrosorption of the above-mentioned molecule-ions through evaluation of the associated charge-transfer resistances and capacitances for the Pt(100) plane in 0.5 M H2SO4. These results also provided support for the interfacial ion-pairing mechanism that had been based on the voltammetric and in situ FTIR spectroscopic results published earlier. (C) 2008 Elsevier B.V. All rights reserved.