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Interfacial Redox Properties of Gold/Gold Oxide in the Presence and Absence of Applied Potential.

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Title: Interfacial Redox Properties of Gold/Gold Oxide in the Presence and Absence of Applied Potential.
Authors: Giron, Rachel Guia P.1, Ferguson, Gregory S.1 gf03@lehigh.edu
Source: Journal of The Electrochemical Society. 2019, Vol. 166 Issue 2, pH47-H53. 7p.
Subjects: Gold oxide, Oxide coating
Abstract: Although gold does not form a native oxide under ordinary conditions, its surface can be oxidized electrochemically and the resulting oxide film studied. We have used this approach to examine the effects of anodization potential, anodization time, pH, and presence or absence of dissolved oxygen on the open-circuit decomposition of anodic gold oxide using a combination of in situ ellipsometric, potentiometric, coulometric, and microgravimetric measurements. As expected, increasing the anodization time or potential resulted in more inert films that persisted for longer times in the absence of an applied potential. We also found that this decomposition was faster at low and high pH, but slow at neutral pH. Decomposition of the oxide film was also inhibited by the presence of dissolved oxygen in the contacting electrolyte solution. [ABSTRACT FROM AUTHOR]
Copyright of Journal of The Electrochemical Society is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 134606349
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Interfacial Redox Properties of Gold/Gold Oxide in the Presence and Absence of Applied Potential.
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  Data: <searchLink fieldCode="AR" term="%22Giron%2C+Rachel+Guia+P%2E%22">Giron, Rachel Guia P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ferguson%2C+Gregory+S%2E%22">Ferguson, Gregory S.</searchLink><relatesTo>1</relatesTo><i> gf03@lehigh.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+The+Electrochemical+Society%22">Journal of The Electrochemical Society</searchLink>. 2019, Vol. 166 Issue 2, pH47-H53. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Gold+oxide%22">Gold oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Oxide+coating%22">Oxide coating</searchLink>
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  Data: Although gold does not form a native oxide under ordinary conditions, its surface can be oxidized electrochemically and the resulting oxide film studied. We have used this approach to examine the effects of anodization potential, anodization time, pH, and presence or absence of dissolved oxygen on the open-circuit decomposition of anodic gold oxide using a combination of in situ ellipsometric, potentiometric, coulometric, and microgravimetric measurements. As expected, increasing the anodization time or potential resulted in more inert films that persisted for longer times in the absence of an applied potential. We also found that this decomposition was faster at low and high pH, but slow at neutral pH. Decomposition of the oxide film was also inhibited by the presence of dissolved oxygen in the contacting electrolyte solution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of The Electrochemical Society is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1149/2.0931902jes
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: H47
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      – SubjectFull: Gold oxide
        Type: general
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      – TitleFull: Interfacial Redox Properties of Gold/Gold Oxide in the Presence and Absence of Applied Potential.
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              Text: 2019
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