Application of the Site Blocking Method to the Investigation of the Kinetics of Carbon Monoxide Electrooxidation on Nanostructured Pt | Sciact - CRIS-system of Boreskov Institute of Catalysis

Application of the Site Blocking Method to the Investigation of the Kinetics of Carbon Monoxide Electrooxidation on Nanostructured Pt Full article

Journal

Journal of Solid State Electrochemistry
ISSN: 1432-8488 , E-ISSN: 1433-0768

Output data

Year: 2014, Volume: 18, Number: 5, Pages: 1195-1203 Pages count : 9 DOI: 10.1007/s10008-013-2251-8

Tags

CO monolayer oxidation, Current transients, Electrocatalysis, Gold adatoms, Selective site blocking

Authors

Kuznetsov Aleksey N. ^1,2 , Parmon Valentin N. ² , Savinova Elena R. ^1,3

Affiliations

1	Ecole Européenne Chimie Polymères Matériaux, Université de Strasbourg, UMR 7515 du CNRS-UdS-ECPM, 25 rue Becquerel, 67087 Strasbourg, France
2	Boreskov Institute of Catalysis, pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russian Federation
3	International Center for Frontier Research in Chemistry, University of Strasbourg, Strasbourg, France

Funding (2)

1	The Ministry of Education and Science of the Russian Federation	8440
2	Council for Grants of the President of the Russian Federation	НШ-524.2012.3

In this work, we apply a recently developed selective site blocking with gold adatoms (Kuznetsov et al. Electrocatal 3:211–220, 2012) for studying the electrooxidation of adsorbed carbon monoxide on electrodeposited Pt. The reaction is studied using chronoamperometry, and the obtained current transients are fitted with a nucleation-and-growth model in order to determine the characteristic kinetic parameters on defect and terrace (facet) sites. We conclude that Au selectively blocks defect sites up to very high coverages of 0.42 MLs, strongly slowing down the reaction kinetics. Blocking of defect sites with Au adatoms also results in an increase of the packing density of CO on terrace sites. The rate constant of CO oxidation on defects is higher than that on terraces and exhibits higher Tafel slope.

Kuznetsov A.N. , Parmon V.N. , Savinova E.R.
Application of the Site Blocking Method to the Investigation of the Kinetics of Carbon Monoxide Electrooxidation on Nanostructured Pt
Journal of Solid State Electrochemistry. 2014. V.18. N5. P.1195-1203. DOI: 10.1007/s10008-013-2251-8 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Aug 13, 2013
Accepted:	Sep 2, 2013
Published online:	Oct 4, 2013
Published print:	May 1, 2014

Web of science:	WOS:000336311400004
Scopus:	2-s2.0-84901471235
Elibrary:	22060088
Chemical Abstracts:	2013:1567502
Chemical Abstracts (print):	160:644246
OpenAlex:	W2056427662

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