Time-dependent decrease in the enhanced electrocatalytic activities observed after three different pretreatments of gold electrodes

Gorachand Dutta; Kyungmin Jo; Hyunwoo Lee; Boram Kim; Han Young Woo; Haesik Yang

doi:10.1016/j.jelechem.2012.04.011

Time-dependent decrease in the enhanced electrocatalytic activities observed after three different pretreatments of gold electrodes

Gorachand Dutta, Kyungmin Jo, Hyunwoo Lee, Boram Kim, Han Young Woo, Haesik Yang

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

8 Citations (Scopus)

Abstract

This study reports how the electrocatalytic activities of gold (Au) electrodes change with aging under ambient conditions. The enhanced electrocatalytic activities of Au electrodes observed after piranha treatment, mechanical polishing, or NaBH₄ treatment decrease with aging. The enhanced electrocatalytic activities toward p-benzoquinone reduction and glucose oxidation decrease 7 days after the treatments, even though the change in surface contamination during aging is not significant. The surface roughness of the Au electrodes is maintained during the NaBH₄ treatment, whereas it changes substantially during the piranha treatment and mechanical polishing.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	675
DOIs	https://doi.org/10.1016/j.jelechem.2012.04.011
Publication status	Published - 2012 Jun 15
Externally published	Yes

Bibliographical note

Funding Information:
This study was supported by the Basic Science Research Program (2012006478 and 2009-0085182) and the Public Welfare & Safety Research Program (2010-0020772) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology. We thank Korean Basic Science Institute (KBSI) for XPS data.

Keywords

Aging
Electrocatalytic activity
Gold electrode
Piranha treatment

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

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10.1016/j.jelechem.2012.04.011

Cite this

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title = "Time-dependent decrease in the enhanced electrocatalytic activities observed after three different pretreatments of gold electrodes",

abstract = "This study reports how the electrocatalytic activities of gold (Au) electrodes change with aging under ambient conditions. The enhanced electrocatalytic activities of Au electrodes observed after piranha treatment, mechanical polishing, or NaBH4 treatment decrease with aging. The enhanced electrocatalytic activities toward p-benzoquinone reduction and glucose oxidation decrease 7 days after the treatments, even though the change in surface contamination during aging is not significant. The surface roughness of the Au electrodes is maintained during the NaBH4 treatment, whereas it changes substantially during the piranha treatment and mechanical polishing.",

keywords = "Aging, Electrocatalytic activity, Gold electrode, Piranha treatment",

author = "Gorachand Dutta and Kyungmin Jo and Hyunwoo Lee and Boram Kim and Woo, {Han Young} and Haesik Yang",

note = "Funding Information: This study was supported by the Basic Science Research Program (2012006478 and 2009-0085182) and the Public Welfare & Safety Research Program (2010-0020772) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology. We thank Korean Basic Science Institute (KBSI) for XPS data.",

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day = "15",

doi = "10.1016/j.jelechem.2012.04.011",

language = "English",

volume = "675",

pages = "41--46",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

publisher = "Elsevier B.V.",

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T1 - Time-dependent decrease in the enhanced electrocatalytic activities observed after three different pretreatments of gold electrodes

AU - Dutta, Gorachand

AU - Jo, Kyungmin

AU - Lee, Hyunwoo

AU - Kim, Boram

AU - Woo, Han Young

AU - Yang, Haesik

N1 - Funding Information: This study was supported by the Basic Science Research Program (2012006478 and 2009-0085182) and the Public Welfare & Safety Research Program (2010-0020772) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology. We thank Korean Basic Science Institute (KBSI) for XPS data.

PY - 2012/6/15

Y1 - 2012/6/15

N2 - This study reports how the electrocatalytic activities of gold (Au) electrodes change with aging under ambient conditions. The enhanced electrocatalytic activities of Au electrodes observed after piranha treatment, mechanical polishing, or NaBH4 treatment decrease with aging. The enhanced electrocatalytic activities toward p-benzoquinone reduction and glucose oxidation decrease 7 days after the treatments, even though the change in surface contamination during aging is not significant. The surface roughness of the Au electrodes is maintained during the NaBH4 treatment, whereas it changes substantially during the piranha treatment and mechanical polishing.

AB - This study reports how the electrocatalytic activities of gold (Au) electrodes change with aging under ambient conditions. The enhanced electrocatalytic activities of Au electrodes observed after piranha treatment, mechanical polishing, or NaBH4 treatment decrease with aging. The enhanced electrocatalytic activities toward p-benzoquinone reduction and glucose oxidation decrease 7 days after the treatments, even though the change in surface contamination during aging is not significant. The surface roughness of the Au electrodes is maintained during the NaBH4 treatment, whereas it changes substantially during the piranha treatment and mechanical polishing.

KW - Aging

KW - Electrocatalytic activity

KW - Gold electrode

KW - Piranha treatment

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U2 - 10.1016/j.jelechem.2012.04.011

DO - 10.1016/j.jelechem.2012.04.011

M3 - Article

AN - SCOPUS:84861336858

SN - 1572-6657

VL - 675

SP - 41

EP - 46

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Time-dependent decrease in the enhanced electrocatalytic activities observed after three different pretreatments of gold electrodes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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