Spectroelectrochemical study on CN− adsorbed at Pt(111) in sulphuric and perchloric media

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Title: Spectroelectrochemical study on CN− adsorbed at Pt(111) in sulphuric and perchloric media
Authors: Huerta Arráez, Francisco | Morallon, Emilia | Quijada Tomás, César | Vázquez Picó, José Luis | Aldaz Riera, Antonio
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física
Keywords: Cyanide | Platinum | Single crystals | FTIR spectroscopy | Cyclic voltammetry
Knowledge Area: Química Física
Date Created: 21-Oct-1997
Issue Date: 1-Nov-1998
Publisher: Elsevier
Citation: HUERTA ARRÁEZ, Francisco, et al. "Spectroelectrochemical study on CN− adsorbed at Pt(111) in sulphuric and perchloric media". Electrochimica Acta. Vol. 44, Issues 6-7 (1 Nov. 1998). ISSN 0013-4686, pp. 943-948
Abstract: Cyclic voltammetry and in situ FTIR spectroscopy were combined to study irreversibly adsorbed cyanide adlayers in both perchloric and sulphuric media. Cyanide adlayers were formed on Pt(111) single-crystal electrodes and are stable in a wide range of potentials. A vibrational band at around 2100 cm−1 was assigned to the C–N stretching vibration of adsorbed cyanide, for which tuning rates close to 100 cm−1 V−1 below 0.5 V and 30 cm−1 V−1 above this potential were measured. These values are independent on the supporting electrolyte employed. A reorientation of the adsorbed cyanide was proposed to explain the changes observed in both tuning rate and integrated intensity at around 0.5 V.
Sponsor: Generalitat Valenciana; Dirección General de Investigación, Ciencia y Tecnología (PB93/0944).
URI: http://hdl.handle.net/10045/7819
ISSN: 0013-4686
DOI: 10.1016/S0013-4686(98)00197-2
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/S0013-4686(98)00197-2
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