Adsorbed cyanide reactions at the Pt(100) surface

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Title: Adsorbed cyanide reactions at the Pt(100) surface
Authors: Huerta Arráez, Francisco | Morallon, Emilia | Vázquez Picó, José Luis
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física
Keywords: Cyclic voltammetry | FTIR spectroscopy | Cyanide | Carbon monoxide | Nitric oxide | Pt(100) electrode
Knowledge Area: Química Física
Date Created: 1999
Issue Date: 25-Jan-2000
Publisher: Elsevier
Citation: HUERTA ARRÁEZ, Francisco; MORALLÓN NÚÑEZ, Emilia; VÁZQUEZ PICÓ, José Luis. "Adsorbed cyanide reactions at the Pt(100) surface". Journal of Electroanalytical Chemistry. Vol. 480, Issues 1-2 (25 Jan. 2000). ISSN 0022-0728, pp. 101-105
Abstract: In contrast to what is observed in alkaline media, cyanide adlayers formed on Pt(100) are very reactive in 0.1 M HClO4 solutions. In this medium, dissimilar behaviour has been observed for the potential regions above and below 0.4 V (RHE). CNads is oxidised above 0.8 V to form dissolved CO2 and an adsorbed nitric oxide layer. Two distinct absorption frequencies have been observed for the N–O stretching at 1610 and 1680 cm−1. On the other hand, CNads is able to react below 0.4 V to yield an adsorbed carbon monoxide adlayer. The reaction rate is slow enough to allow the observation of a surface intermediate species by means of in situ FT IR spectroscopy. As deduced from the analysis of the spectra, this species may contain a double C-N bond (i.e. an iminium-like adsorbed residue).
ISSN: 0022-0728
DOI: 10.1016/S0022-0728(99)00452-0
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - GEPE - Artículos de Revistas

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