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Title: The role of non-covalent interactions on CO bulk oxidation on Pt single crystal electrodes in alkaline electrolytes

Abstract

The role of non-covalent interaction between both non-specifically adsorbed hydrated K+, Li+ and Ba2+ cations (M+) and hydroxyl species (M+-OHad) as well as underpotentially deposited Cu adatoms and OHad (Cuupd-OHad) on bulk CO oxidation (COb) is investigated on Pt(111) and Pt(100) in alkaline solutions. The effect of Cuupd-OHad on COb oxidation is observed almost at the reversible potential for CO oxidation, signaling that Cuupd-induced adsorption of OHad activates COb oxidation at very low over potentials. In contrast, the effect of M+-OHad was found to be strongly dependent on the surface coverage of OHad on Pt; e.g., while no effect is found when the surface is pre-covered by adsorbed CO (COad), a discernable effect is observed on OHad pre-covered Pt surface.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1392542
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Electrochimica Acta; Journal Volume: 152
Country of Publication:
United States
Language:
English

Citation Formats

Kodama, Kensaku, Morimoto, Yu, Strmcnik, Dusan S., and Markovic, Nenad M.. The role of non-covalent interactions on CO bulk oxidation on Pt single crystal electrodes in alkaline electrolytes. United States: N. p., 2015. Web. doi:10.1016/j.electacta.2014.11.112.
Kodama, Kensaku, Morimoto, Yu, Strmcnik, Dusan S., & Markovic, Nenad M.. The role of non-covalent interactions on CO bulk oxidation on Pt single crystal electrodes in alkaline electrolytes. United States. doi:10.1016/j.electacta.2014.11.112.
Kodama, Kensaku, Morimoto, Yu, Strmcnik, Dusan S., and Markovic, Nenad M.. Thu . "The role of non-covalent interactions on CO bulk oxidation on Pt single crystal electrodes in alkaline electrolytes". United States. doi:10.1016/j.electacta.2014.11.112.
@article{osti_1392542,
title = {The role of non-covalent interactions on CO bulk oxidation on Pt single crystal electrodes in alkaline electrolytes},
author = {Kodama, Kensaku and Morimoto, Yu and Strmcnik, Dusan S. and Markovic, Nenad M.},
abstractNote = {The role of non-covalent interaction between both non-specifically adsorbed hydrated K+, Li+ and Ba2+ cations (M+) and hydroxyl species (M+-OHad) as well as underpotentially deposited Cu adatoms and OHad (Cuupd-OHad) on bulk CO oxidation (COb) is investigated on Pt(111) and Pt(100) in alkaline solutions. The effect of Cuupd-OHad on COb oxidation is observed almost at the reversible potential for CO oxidation, signaling that Cuupd-induced adsorption of OHad activates COb oxidation at very low over potentials. In contrast, the effect of M+-OHad was found to be strongly dependent on the surface coverage of OHad on Pt; e.g., while no effect is found when the surface is pre-covered by adsorbed CO (COad), a discernable effect is observed on OHad pre-covered Pt surface.},
doi = {10.1016/j.electacta.2014.11.112},
journal = {Electrochimica Acta},
number = ,
volume = 152,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}