The redox reaction of hydrogen peroxide at an Au(100) electrode: Implications for oxygen reduction kinetics

Yong Li Zheng; Dong Mei; Yan Xia Chen; Shen Ye

doi:10.1016/j.elecom.2013.12.005

The redox reaction of hydrogen peroxide at an Au(100) electrode: Implications for oxygen reduction kinetics

Yong Li Zheng, Dong Mei, Yan Xia Chen, Shen Ye

SCI - Chemistry

University of Science and Technology of China

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

16 Citations (Scopus)

Abstract

The redox reaction of hydrogen peroxide (O₂ + 2H⁺ + 2e ⇄ H₂O₂) at an Au(100) electrode/0.1 M HClO ₄ interface and the kinetic H-D isotope effect for O₂ reduction have been investigated. It was found that i) the kinetics for electrochemical oxidation of H₂O₂ to O₂ are very fast, occurring at a potential very close to its equilibrium potential (E^O2/^H2O2eq); ii) the kinetics for O ₂ reduction to H₂O₂ are much slower than those for H₂O₂ oxidation, with a H-D kinetic isotope effect of above two; and iii) the onset overpotential of H₂O₂ + 2H⁺ + 2e → 2H₂O is ca. 1.4 V. Mechanistic insight and the origin for the high overpotential at the onset for O₂ reduction at Au(100) are discussed.

Original language	English
Pages (from-to)	19-21
Number of pages	3
Journal	Electrochemistry Communications
Volume	39
DOIs	https://doi.org/10.1016/j.elecom.2013.12.005
Publication status	Published - 2014 Feb

Keywords

Au(100) electrode
Hydrogen peroxide oxidation
Hydrogen peroxide reduction
Kinetics
Overpotential
Oxygen reduction

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10.1016/j.elecom.2013.12.005

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title = "The redox reaction of hydrogen peroxide at an Au(100) electrode: Implications for oxygen reduction kinetics",

abstract = "The redox reaction of hydrogen peroxide (O2 + 2H+ + 2e ⇄ H2O2) at an Au(100) electrode/0.1 M HClO 4 interface and the kinetic H-D isotope effect for O2 reduction have been investigated. It was found that i) the kinetics for electrochemical oxidation of H2O2 to O2 are very fast, occurring at a potential very close to its equilibrium potential (EO2/H2O2eq); ii) the kinetics for O 2 reduction to H2O2 are much slower than those for H2O2 oxidation, with a H-D kinetic isotope effect of above two; and iii) the onset overpotential of H2O2 + 2H+ + 2e → 2H2O is ca. 1.4 V. Mechanistic insight and the origin for the high overpotential at the onset for O2 reduction at Au(100) are discussed.",

keywords = "Au(100) electrode, Hydrogen peroxide oxidation, Hydrogen peroxide reduction, Kinetics, Overpotential, Oxygen reduction",

author = "Zheng, {Yong Li} and Dong Mei and Chen, {Yan Xia} and Shen Ye",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (no. 20773116 ), and the National Instrumentation Program (no. 2011YQ03012416 ).",

year = "2014",

month = feb,

doi = "10.1016/j.elecom.2013.12.005",

language = "English",

volume = "39",

pages = "19--21",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - The redox reaction of hydrogen peroxide at an Au(100) electrode

T2 - Implications for oxygen reduction kinetics

AU - Zheng, Yong Li

AU - Mei, Dong

AU - Chen, Yan Xia

AU - Ye, Shen

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (no. 20773116 ), and the National Instrumentation Program (no. 2011YQ03012416 ).

PY - 2014/2

Y1 - 2014/2

N2 - The redox reaction of hydrogen peroxide (O2 + 2H+ + 2e ⇄ H2O2) at an Au(100) electrode/0.1 M HClO 4 interface and the kinetic H-D isotope effect for O2 reduction have been investigated. It was found that i) the kinetics for electrochemical oxidation of H2O2 to O2 are very fast, occurring at a potential very close to its equilibrium potential (EO2/H2O2eq); ii) the kinetics for O 2 reduction to H2O2 are much slower than those for H2O2 oxidation, with a H-D kinetic isotope effect of above two; and iii) the onset overpotential of H2O2 + 2H+ + 2e → 2H2O is ca. 1.4 V. Mechanistic insight and the origin for the high overpotential at the onset for O2 reduction at Au(100) are discussed.

AB - The redox reaction of hydrogen peroxide (O2 + 2H+ + 2e ⇄ H2O2) at an Au(100) electrode/0.1 M HClO 4 interface and the kinetic H-D isotope effect for O2 reduction have been investigated. It was found that i) the kinetics for electrochemical oxidation of H2O2 to O2 are very fast, occurring at a potential very close to its equilibrium potential (EO2/H2O2eq); ii) the kinetics for O 2 reduction to H2O2 are much slower than those for H2O2 oxidation, with a H-D kinetic isotope effect of above two; and iii) the onset overpotential of H2O2 + 2H+ + 2e → 2H2O is ca. 1.4 V. Mechanistic insight and the origin for the high overpotential at the onset for O2 reduction at Au(100) are discussed.

KW - Au(100) electrode

KW - Hydrogen peroxide oxidation

KW - Hydrogen peroxide reduction

KW - Kinetics

KW - Overpotential

KW - Oxygen reduction

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U2 - 10.1016/j.elecom.2013.12.005

DO - 10.1016/j.elecom.2013.12.005

M3 - Article

AN - SCOPUS:84890816984

SN - 1388-2481

VL - 39

SP - 19

EP - 21

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

The redox reaction of hydrogen peroxide at an Au(100) electrode: Implications for oxygen reduction kinetics

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Keywords

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