Application of the Site Blocking Method to the Investigation of the Kinetics of Carbon Monoxide Electrooxidation on Nanostructured Pt | Sciact - CRIS-система Института катализа

Application of the Site Blocking Method to the Investigation of the Kinetics of Carbon Monoxide Electrooxidation on Nanostructured Pt Научная публикация

Журнал

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

Вых. Данные

Год: 2014, Том: 18, Номер: 5, Страницы: 1195-1203 Страниц : 9 DOI: 10.1007/s10008-013-2251-8

Ключевые слова

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

Авторы

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

Организации

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

Информация о финансировании (2)

1	Министерство образования и науки Российской Федерации	8440
2	Совет по грантам Президента Российской Федерации	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 CAPlusCA OpenAlex

Поступила в редакцию:	13 авг. 2013 г.
Принята к публикации:	2 сент. 2013 г.
Опубликована online:	4 окт. 2013 г.
Опубликована в печати:	1 мая 2014 г.

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

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