Study of L-cysteine and L-cystine adsorption and oxidation on Pt electrode by internal reflection infrared spectroscopy and DEMS

• Grant number: 15/08300-9
• Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
• Effective date (Start): September 14, 2015
• Effective date (End): July 30, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal researcher: Susana Inés Córdoba de Torresi
• Grantee: André Henrique Baraldi Dourado
• Supervisor abroad: Matthias Arenz
• Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Research place: University of Copenhagen, Copenhagen, Denmark
• Associated to the scholarship: 13/25592-8 - Study of L-cysteine and L-cystine adsorption on platinum electrodes, BP.DD

Abstract

The protein, metallic subtract interaction is of great electrochemical /electroanalitical interest. However, a lower part of this relationship is known, what makes this methodology being more an art then a science. That's why, the present project's aim is to study the adsorption of aminoacids that are important for protein immobilization (cysteine and cystine) bias infrared region spectroscopy of a Pt surface by internal reflection, which can provide kinetic and thermodynamic information of the process. The electrooxidation of these species also are going to be investigated by this technic and by differential electrochemical mass spectrometry, for identification and characterization of oxidized species, beside the evaluation of the formation process. (AU)

Scientific publications

(6)

(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)

DOURADO, ANDRE H. B.; MUNHOS, RENAN L.; VARELA, HAMILTON; CORDOBA DE TORRESI, SUSANA I.; ARENZ, MATTHIAS. Influence of the Electrode and Chaotropicity of the Electrolyte on the Oscillatory Behavior of the Electrocatalytic Oxidation of SO2. Journal of Physical Chemistry C, v. 122, n. 2, p. 1243-1247, JAN 18 2018. (13/25592-8, 17/09346-8, 15/08300-9, 13/16930-7, 15/26308-7)

DOURADO, ANDRE H. B.; SILVA, RUBENS A.; TORRESI, ROBERTO M.; SUMODJO, PAULO T. A.; ARENZ, MATTHIAS; CORDOBA DE TORRESI, SUSANA I.. Kinetics, Assembling, and Conformation Control of L-Cysteine Adsorption on Pt Investigated by in situ FTIR Spectroscopy and QCM-D. ChemPhysChem, v. 19, n. 18, p. 2340-2348, SEP 18 2018. (15/08300-9, 17/08349-3, 13/25592-8)

DOURADO, ANDRE H. B.; DE ANGELIS, LEONARDO D.; ARENZ, MATTHIAS; CORDOBA DE TORRESI, I, SUSANA. L-cysteine oxidation on Pt and Au rotating disk electrodes: Insights on mixed controlled kinetics. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 880, JAN 1 2021. (15/26308-7, 18/13944-0, 13/25592-8, 15/08300-9)

DOURADO, ANDRE H. B.; MUNHOS, RENAN L.; SILVA, JR., NORBERTO A.; DEL COLLE, VINICIUS; CARVALHO, GABRIEL G. A.; OLIVEIRA, PEDRO V.; ARENZ, MATTHIAS; VARELA, HAMILTON; CORDOBA DE TORRESI, SUSANA I.. Opportunities and Knowledge Gaps of SO2 Electrocatalytic Oxidation for H-2 Electrochemical Generation. ACS CATALYSIS, v. 9, n. 9, p. 8136-8143, SEP 2019. (13/25592-8, 17/09346-8, 15/08300-9, 13/16930-7, 15/26308-7)

DOURADO, ANDRE H. B.; SILVA-JR, NORBERTO A.; MUNHOS, RENAN L.; DEL COLLE, VINICIUS; ARENZ, MATTHIAS; VARELA, HAMILTON; CORDOBA DE TORRESI, I, SUSANA. Influence of Anion Chaotropicity on the SO2 Oxidation Reaction: When Spectator Species Determine the Reaction Pathway. CHEMELECTROCHEM, v. 7, n. 8, JAN 2020. (15/08300-9, 19/02438-0, 15/26308-7, 13/25592-8, 13/16930-7, 17/09346-8)

DOURADO, ANDRE H. B.; ARENZ, MATTHIAS; CORDOBA DE TORRESI, I, SUSANA. Mechanism of Electrochemical L-Cysteine Oxidation on Pt. CHEMELECTROCHEM, v. 6, n. 4, p. 1009-1013, FEB 15 2019. (15/08300-9, 13/25592-8)