Gold dissolution: towards understanding of noble metal corrosion

By S. Cherevko, A. Topalov, Aleksandar R. Zeradjanin, I. Katsounaros, K. Mayrhofer. 2013

175 citations recorded by the source corpus.

The electrochemical dissolution of gold is an intricate topic and even though it has been studied for more than 50 years, its understanding remains rather limited. In the current work, we obtain unique information on gold dissolution by using a setup composed of a micro-electrochemical scanning flow cell (SFC) and inductively coupled plasma mass spectrometry (ICP-MS). Thus, comprehensive online gold dissolution profiles during the initial stage of oxidation as a function of the potential, time and pH are presented. A microscopic model explaining the experimental findings is proposed. According to this model, two dissolution mechanisms take place in two different potential regions: at low anodic potentials the dissolution is driven by the place-exchange between metal and adsorbed hydroxyl/oxygen ions, while at higher potentials the oxygen evolution reaction taking place on the surface of gold oxide initiates concomitant gold loss.

Subfields: Electrochemistry, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/b955821c1325a934e18c95cf1c6ad2db6c5d3622

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrochemistry

1. S. Cherevko
2. K. Mayrhofer
3. Zarina Pawolek
4. P. Strasser
5. T. Reier
6. Aleksandar R. Zeradjanin

In Materials Chemistry

1. P. Strasser
2. S. Cherevko
3. K. Mayrhofer

In Renewable Energy, Sustainability and the Environment

1. P. Strasser
2. S. Cherevko
3. K. Mayrhofer
4. T. Reier
5. Aleksandar R. Zeradjanin
6. Herbert Over

Citations in the corpus

• Stability of nanostructured iridium oxide electrocatalysts during oxygen evolution reaction in acidic environment (2014, methodology): “All electrochemical and spectrometric measurements were performed using an SFC coupled with an ICPMS (NexION 300X, Perkin Elmer) as described elsewhere [35,37, 38].”