Evaluation of efficiency and selectivity in CO2 electrocatalytic reduction of Sn and Bi deposited in carbon fiber

• Grant number: 17/09713-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2017
• End date: September 30, 2018
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Osmando Ferreira Lopes
• Grantee: Lara Giraldelli Puppin
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The strategies of greenhouse gas reform to hydrocarbons production, as CO2 electrocatalytic reduction, is an alternative with great potential in the production of energy in a sustainable way. However, still are necessary deep studies of electrocatalysts in this reaction that showed suitable efficiency and selectivity, beside the high chemical stability, in order to make this process viable. The Sn and Bi metals have been studied as electrocatalyst for CO2 reduction, however, their electrocatalytic activity and selectivity/efficiency still show differences in reported studies, beside theses show a low stability. The metals deposition in carbon fiber support has been used as strategy to increase the specific surface area, electrocatalytic activity and stability. Therefore, the aims of this project are: (I) Develop deposition of Sn and Bi metal methods onto carbon fiber, (II) Characterize the structural and morphological properties of electrocatalysts obtained, (III) Evaluate the electrocatalytic activity, selectivity and stability of Sn and Bi electrocatalysts in CO2 reduction reaction. (AU)

Scientific publications

(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)

PUPPIN, LARA G.; KHALID, MOHD; DA SILVA, GELSON T. T.; RIBEIR, CAUE O; VARELA, HAMILTON; LOPES, OSMANDO F.. Electrochemical reduction of CO2 to formic acid on Bi2O2CO3/carbon fiber electrodes. Journal of Materials Research, v. 35, n. 3, p. 272-280, FEB 14 2020. (18/01258-5, 17/09713-0, 17/00433-5, 16/09746-3, 13/16930-7)

PUPPIN, LARA G.; DA SILVA, LUIS F.; CARMO, MARCELO; VARELA, HAMILTON; LOPES, OSMANDO F.. Effect of the oxidation state and morphology of SnOx-based electrocatalysts on the CO2 reduction reaction. Journal of Materials Research, JUN 2021. (13/16930-7, 19/22183-6, 17/09713-0, 16/09746-3)

PUPPIN, LARA G.; DA SILVA, LUIS F.; CARMO, MARCELO; VARELA, HAMILTON; LOPES, OSMANDO F.. Effect of the oxidation state and morphology of SnOx-based electrocatalysts on the CO2 reduction reaction. Journal of Materials Research, v. 36, n. 20, SI, p. 4240-4248, OCT 28 2021. (16/09746-3, 13/16930-7, 17/09713-0, 19/22183-6)