Instabilities in electrocatalysis: complex kinetics catalyzed by model PT surfaces

• Grant number: 16/14758-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: November 01, 2016
• End date: February 28, 2018
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Elton Fabiano Sitta
• Grantee: Kaline Nascimento da Silva
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

The electro-oxidation of small organic molecules is an interesting research field due to their application in converting energy systems like fuel cells. The reactions involve several pathways strongly dependent on factors as applied potential and surface conditions, with the possibility of developing dynamic instabilities. More than an excellent example of self-organization dynamics, instabilities as potential and current oscillations, allow the estimation of kinetic parameter, as activations energy and poisoning surface constant. The present project deals with the comparative study of kinetic instabilities on the electro-oxidation of organic molecules containing one carbon on model surfaces of Pt(111) and Pt(110) as well polycrystalline Pt. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DA SILVA, KALINE N.; SITTA, ELTON. Tuning oscillatory time-series evolution by Pt(111)-OHad stabilization. Journal of Solid State Electrochemistry, v. 24, n. 8, SI, MAR 2020. (16/14758-0, 13/07296-2)

DA SILVA, KALINE N.; NAGAO, RAPHAEL; SITTA, ELTON. Alkali Cation Effect During the Oscillatory Electroreduction of H2O2 on Pt. CHEMISTRYSELECT, v. 2, n. 35, p. 11713-11716, DEC 11 2017. (17/00089-2, 16/01817-9, 13/07296-2, 16/14758-0, 16/22262-5, 14/23916-3)

DA SILVA, KALINE NASCIMENTO; NAGAO, RAPHAEL; SITTA, ELTON. Oscillatory ethylene glycol electrooxidation reaction on Pt in alkaline media: The effect of surface orientation. Electrochimica Acta, v. 360, p. 8-pg., 2020-11-10. (16/01817-9, 13/07296-2, 16/14758-0)

DA SILVA, KALINE N.; SITTA, ELTON. Tuning oscillatory time-series evolution by Pt(111)-OHad stabilization. Journal of Solid State Electrochemistry, v. 24, n. 8, p. 6-pg., 2020-03-26. (13/07296-2, 16/14758-0)