The role of adsorbates in electrocatalytic systems: An analysis of model systems with single crystals

Author(s)

Angelucci, Camilo A. ^[1] ; Souza-Garcia, Janaina ^[1] ; Feliu, Juan M. ^[2]

Affiliation

^[1] Fed Univ ABC, Av Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[2] Univ Alicante, Inst Electrochem, Apdo 99, Alicante 03080 - Spain

• Document type: Review article
• Source: CURRENT OPINION IN ELECTROCHEMISTRY; v. 26, APR 2021.
• Web of Science Citations: 0

Abstract

The use of single crystal electrodes as model catalysts has been widely applied for the study of several reactions. The known structure of the surface provides a system with controlled electronic properties that helps in the understanding of the mechanism of reactions. In this model system, any modification, including the adsorption of anions, organic molecules or foreign atoms, generate changes in the electronic properties of the surface and, thus, in the adsorption energy of the species involved in the studied reaction. The adsorbate can hinder the surface and diminish the activity or prevent the oxidation of the surface and improve the catalysis. The changes in electronic properties can modify the adsorption energy and enhance or worsen the catalytic activity. The effect of any adsorbed species will depend on the structure of the surface, the nature of the species and the studied reaction. (AU)

• FAPESP's process: 18/10292-2 - Investigation of electrochemical processes by Means of Surface Enhanced Raman Spectroscopy.
• Grantee: Camilo Andrea Angelucci
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/06677-6 - Viability Studies of Liquid/Liquid Interfaces and their Use in Electrochemical Devices
• Grantee: Janaina de Souza Garcia
• Support Opportunities: Regular Research Grants