Effect of particle size on the corrosion behaviour of gold in the presence of chloride impurities : an EFC-ICP-MS potentiodynamic study

Jovanovič, Primož (author), Može, Martina (author), Gričar, Ema (author), Šala, Martin (author), Ruiz-Zepeda, Francisco (author), Bele, Marjan (author), Marolt, Gregor (author), Hodnik, Nejc (author)

A profound understanding of the Au dissolution process is a prerequisite for optimal utilization of Au-based materials. This goes for either increasing the corrosion stability of materials in the sectors where the long-term functionality of Au is needed or decreasing the corrosion stability where the recovery of the Au component is crucial. By employing an extremely sensitive online analytical system, consisting of an electrochemical flow cell coupled to an inductively coupled plasma mass spectrometry, in situ potential-resolved dissolution of Au in the ppb range is enabled. A comparative study of two Au based materials, (i) a polycrystalline Au disk and (ii) carbon-supported Au nanoparticles, is presented. As a probe, chloride ions were used to elucidate the distinct differences in the corrosion behavior of the two analogues.

• Language: English
• Keywords: gold, corrosion, electrochemistry, dissolution, chlorides, nanoparticles, EFC-ICP-MS
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2019
• Number of pages: 11 str.
• Numbering: Vol. 9, iss. 1, art. 10
• PID: 20.500.12556/RUL-131968
• UDC: 620.193:546.59
• ISSN on article: 2079-6412
• DOI: 10.3390/coatings9010010
• COBISS.SI-ID: 1538090947
• Publication date in RUL: 07.10.2021

Record is a part of a journal

• Title: Coatings
• Shortened title: Coatings
• Publisher: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.01.2019

Secondary language

• Language: Slovenian
• Keywords: zlato, korozija, nanodelci, elektrokemija