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

Autor(es)

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

Afiliação do(s) autor(es)

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

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

• Tipo de documento: Artigo de Revisão
• Fonte: CURRENT OPINION IN ELECTROCHEMISTRY; v. 26, APR 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/10292-2 - Espectroscopia Raman amplificada por superfície (SERS) aplicado a processos eletroquímicos.
• Beneficiário: Camilo Andrea Angelucci
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/06677-6 - Estudo da Viabilidade da Utilização de Interfaces Líquido/Líquido em Dispositivos Eletroquímicos
• Beneficiário: Janaina de Souza Garcia
• Modalidade de apoio: Auxílio à Pesquisa - Regular