Effect of aging on the electrocatalytic activity of gold nanoparticles

Hyun Ju Kang; Srikanta Patra; Jagotamoy Das; Abdul Aziz; Jinkyung Jo; Haesik Yang

doi:10.1016/j.elecom.2010.06.030

Effect of aging on the electrocatalytic activity of gold nanoparticles

Hyun Ju Kang, Srikanta Patra, Jagotamoy Das, Abdul Aziz, Jinkyung Jo, Haesik Yang^*

^*Corresponding author for this work

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

19 Scopus citations

Abstract

The electrocatalytic activities of freshly prepared nanomaterials do not represent normal activities, if they change with aging. We report the dependence of the electrocatalytic activity of gold nanoparticles (AuNPs) upon aging. The activities of AuNPs prepared by four different methods (electrodeposition; reduction of Au ions with NaBH₄, citrate, and ascorbate, respectively) slowly decrease with aging in the electrooxidation of H ₂O₂ or formic acid, both in air and in solution. The possible origin of this effect is discussed.

Original language	English (US)
Pages (from-to)	1245-1248
Number of pages	4
Journal	Electrochemistry Communications
Volume	12
Issue number	9
DOIs	https://doi.org/10.1016/j.elecom.2010.06.030
State	Published - Sep 2010
Externally published	Yes

Funding

This research was supported by the Basic Science Research Program ( 2009-0072062 , 2009-0085182 , and 2008-314-C00234 ) and the Nano/Bio Science & Technology Program ( 2005-01333 ) through the National Research Foundation (NRF) . We thank Dr. Kiehlmann for editing the manuscript.

Keywords

Aging
Au nanoparticle
Electrocatalytic activity
Formic acid
HO

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2010.06.030

Cite this

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title = "Effect of aging on the electrocatalytic activity of gold nanoparticles",

abstract = "The electrocatalytic activities of freshly prepared nanomaterials do not represent normal activities, if they change with aging. We report the dependence of the electrocatalytic activity of gold nanoparticles (AuNPs) upon aging. The activities of AuNPs prepared by four different methods (electrodeposition; reduction of Au ions with NaBH4, citrate, and ascorbate, respectively) slowly decrease with aging in the electrooxidation of H 2O2 or formic acid, both in air and in solution. The possible origin of this effect is discussed.",

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author = "Kang, {Hyun Ju} and Srikanta Patra and Jagotamoy Das and Abdul Aziz and Jinkyung Jo and Haesik Yang",

note = "Funding Information: This research was supported by the Basic Science Research Program ( 2009-0072062 , 2009-0085182 , and 2008-314-C00234 ) and the Nano/Bio Science & Technology Program ( 2005-01333 ) through the National Research Foundation (NRF) . We thank Dr. Kiehlmann for editing the manuscript.",

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AU - Kang, Hyun Ju

AU - Patra, Srikanta

AU - Das, Jagotamoy

AU - Aziz, Abdul

AU - Jo, Jinkyung

AU - Yang, Haesik

N1 - Funding Information: This research was supported by the Basic Science Research Program ( 2009-0072062 , 2009-0085182 , and 2008-314-C00234 ) and the Nano/Bio Science & Technology Program ( 2005-01333 ) through the National Research Foundation (NRF) . We thank Dr. Kiehlmann for editing the manuscript.

PY - 2010/9

Y1 - 2010/9

N2 - The electrocatalytic activities of freshly prepared nanomaterials do not represent normal activities, if they change with aging. We report the dependence of the electrocatalytic activity of gold nanoparticles (AuNPs) upon aging. The activities of AuNPs prepared by four different methods (electrodeposition; reduction of Au ions with NaBH4, citrate, and ascorbate, respectively) slowly decrease with aging in the electrooxidation of H 2O2 or formic acid, both in air and in solution. The possible origin of this effect is discussed.

AB - The electrocatalytic activities of freshly prepared nanomaterials do not represent normal activities, if they change with aging. We report the dependence of the electrocatalytic activity of gold nanoparticles (AuNPs) upon aging. The activities of AuNPs prepared by four different methods (electrodeposition; reduction of Au ions with NaBH4, citrate, and ascorbate, respectively) slowly decrease with aging in the electrooxidation of H 2O2 or formic acid, both in air and in solution. The possible origin of this effect is discussed.

KW - Aging

KW - Au nanoparticle

KW - Electrocatalytic activity

KW - Formic acid

KW - HO

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Effect of aging on the electrocatalytic activity of gold nanoparticles

Abstract

Funding

Keywords

ASJC Scopus subject areas

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