Requirement of initial long-range substrate structure in unusual CO pre-oxidation on Pt(111) electrodes

Manuel J.S. Farias; William Cheuquepán; A. A. Tanaka; Juan M. Feliu

doi:10.1016/j.elecom.2018.10.019

Requirement of initial long-range substrate structure in unusual CO pre-oxidation on Pt(111) electrodes

Manuel J.S. Farias, William Cheuquepán, A. A. Tanaka, Juan M. Feliu

Research output: Contribution to journal › Article › peer-review

Abstract

The activation pathway of CO electro-oxidation at low potentials is frequently favored on a catalyst with surface defects. Here, we report a discovery in which an initial long-range substrate structure is required for the activation of an unusual CO pre-oxidation reaction pathway on Pt(111) surfaces which have been flame annealed and then cooled in a CO atmosphere. In contrast to current understanding about the oxidation of CO on Pt, the activation of this reaction pathway is inhibited as the (111) planes become defect-rich.

Original language	English
Pages (from-to)	60-63
Number of pages	4
Journal	Electrochemistry Communications
Volume	97
DOIs	https://doi.org/10.1016/j.elecom.2018.10.019
Publication status	Published - Dec 2018
Externally published	Yes

Keywords

CO pre-oxidation
Electrocatalysis
Pt electrode
Surface structure-sensitive

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10.1016/j.elecom.2018.10.019

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title = "Requirement of initial long-range substrate structure in unusual CO pre-oxidation on Pt(111) electrodes",

abstract = "The activation pathway of CO electro-oxidation at low potentials is frequently favored on a catalyst with surface defects. Here, we report a discovery in which an initial long-range substrate structure is required for the activation of an unusual CO pre-oxidation reaction pathway on Pt(111) surfaces which have been flame annealed and then cooled in a CO atmosphere. In contrast to current understanding about the oxidation of CO on Pt, the activation of this reaction pathway is inhibited as the (111) planes become defect-rich.",

keywords = "CO pre-oxidation, Electrocatalysis, Pt electrode, Surface structure-sensitive",

author = "Farias, {Manuel J.S.} and William Cheuquep{\'a}n and Tanaka, {A. A.} and Feliu, {Juan M.}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = dec,

doi = "10.1016/j.elecom.2018.10.019",

language = "English",

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AU - Farias, Manuel J.S.

AU - Cheuquepán, William

AU - Tanaka, A. A.

AU - Feliu, Juan M.

PY - 2018/12

Y1 - 2018/12

N2 - The activation pathway of CO electro-oxidation at low potentials is frequently favored on a catalyst with surface defects. Here, we report a discovery in which an initial long-range substrate structure is required for the activation of an unusual CO pre-oxidation reaction pathway on Pt(111) surfaces which have been flame annealed and then cooled in a CO atmosphere. In contrast to current understanding about the oxidation of CO on Pt, the activation of this reaction pathway is inhibited as the (111) planes become defect-rich.

AB - The activation pathway of CO electro-oxidation at low potentials is frequently favored on a catalyst with surface defects. Here, we report a discovery in which an initial long-range substrate structure is required for the activation of an unusual CO pre-oxidation reaction pathway on Pt(111) surfaces which have been flame annealed and then cooled in a CO atmosphere. In contrast to current understanding about the oxidation of CO on Pt, the activation of this reaction pathway is inhibited as the (111) planes become defect-rich.

KW - CO pre-oxidation

KW - Electrocatalysis

KW - Pt electrode

KW - Surface structure-sensitive

UR - http://www.scopus.com/inward/record.url?scp=85055528691&partnerID=8YFLogxK

U2 - 10.1016/j.elecom.2018.10.019

DO - 10.1016/j.elecom.2018.10.019

M3 - Article

AN - SCOPUS:85055528691

SN - 1388-2481

VL - 97

SP - 60

EP - 63

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Requirement of initial long-range substrate structure in unusual CO pre-oxidation on Pt(111) electrodes

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Keywords

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