Influence of Au facets on the electroxidation of SO2

• Grant number: 18/24105-0
• Support Opportunities: Scholarships abroad - Research Internship - Master's degree
• Start date: March 01, 2019
• End date: August 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Susana Inés Córdoba de Torresi
• Grantee: Renan Lopes Munhos
• Supervisor: Matthias Arenz
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: University of Bern, Switzerland
• Associated to the scholarship: 17/09346-8 - Electrochemical oxidation of Sulfur dioxide onto nanostrutured gold catalysts, BP.MS

Abstract

The electroxidation of SO2 is considered a new source of hydrogen, because it is energetically cheaper than water electrolysis. This method presents several advantages, such as the H2 production at lower potentials and the consumption of an atmospheric pollutant, SO2, producing an important industrial chemical, H2SO4. Our group has already shown that Au is the best electrode for this process and that a non-linear dynamics takes place on the electrode surface.Since the surface crystallography influences on the non-linear behavior, it is proposed to use electrodes with well-defined surfaces, single crystal electrodes, to investigate the electrochemical dependence on this variable. (AU)