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  Electrochemical dissolution of gold in presence of chloride and bromide traces studied by on-line electrochemical inductively coupled plasma mass spectrometry

Kasian, O., Kulyk, N., Mingers, A. M., Zeradjanin, A. R., Mayrhofer, K. J. J., & Cherevko, S. (2016). Electrochemical dissolution of gold in presence of chloride and bromide traces studied by on-line electrochemical inductively coupled plasma mass spectrometry. Electrochimica Acta, 222, 1056-1063. doi:10.1016/j.electacta.2016.11.074.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-3FCC-4 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-3FCD-2
Genre: Journal Article

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 Creators:
Kasian, Olga1, Author           
Kulyk, Nadiia1, Author           
Mingers, Andrea Maria1, Author           
Zeradjanin, Aleksandar R.1, 2, Author           
Mayrhofer, Karl J. J.1, 2, Author           
Cherevko, Serhiy1, 2, Author           
Affiliations:
1Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
2Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              

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Free keywords: gold; corrosion; passivation; oxidation; halide ions
 Abstract: Electrochemical dissolution of gold in the presence of halide ions is traditionally considered as a model case in metal corrosion and passivation studies. Due to a relatively low sensitivity of the conventional techniques, such studies were predominantly limited to electrolytes with high concentrations of halides. The current work employs a special electrochemical scanning flow cell with online inductively coupled plasma mass spectrometry (SFC-ICP-MS) that allows overcoming those limitations, enabling the quantification of gold dissolution in the presence of chloride and bromide traces (1 mu M <= [Cl- / Br-] <= 100 mu M). Moreover, time-and potential-resolved gold dissolution profiles under different potential programs are provided. Based on the experimental results, a tentative mechanism of gold dissolution based on the catalyzing role of hydroxyl and halide anions is discussed. (C) 2016 Elsevier Ltd. All rights reserved.

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Language(s): eng - English
 Dates: 2016-12-20
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000395443700011
DOI: 10.1016/j.electacta.2016.11.074
 Degree: -

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Title: Electrochimica Acta
  Abbreviation : Electrochim. Acta
Source Genre: Journal
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Publ. Info: Oxford, UK : Pergamon-Elsevier Science Ltd
Pages: - Volume / Issue: 222 Sequence Number: - Start / End Page: 1056 - 1063 Identifier: ISSN: 0013-4686
CoNE: https://pure.mpg.de/cone/journals/resource/954925396434