Synthesis and characterization of nanocatalysts in the application of gas diffusion electrodes for of hydrogen peroxide electrogeneration in situ

• Grant number: 13/06682-6
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: July 01, 2013
• End date: December 31, 2013
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Marcos Roberto de Vasconcelos Lanza
• Grantee: Willyam Róger Padilha Barros
• Supervisor: Ana Tavares
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Institut National de la Recherche Scientifique (INRS), Canada
• Associated to the scholarship: 11/06681-4 - Application of advanced oxidation processes (AOP) from in situ electrogeneration H2O2 for the degradation of food dyes: Amaranth, Tartrazine, Brilliant Blue FCF and Fast Green, BP.DR

Abstract

The particles in the nanometer range, known as nanoparticles, have attracted great interest in recent years due to their unique physical and chemical properties as well as its great potential in various fields of technological applications. Therefore the aim of this study is to characterize and synthesize nanoparticles of type F3O4 for use in gas diffusion electrodes (GDE) in order to have the H2O2 electrogeneration under acidic conditions. The characterization techniques are: structural characterization by X-ray diffraction, XPS spectroscopy, elemental analysis, scanning electron microscopy - SEM, transmission electron microscopy, surface analysis by N2 physisorption. The electrochemistry (electrochemical characterization) and the study of electrocatalytic activity of nanoparticles for the formation of H2O2 will be evaluated using a glassy carbon electrode (GC). Results for the synthesis of nanoparticles can show that the crystal structure of the same can be controlled by of size Fe3O4 may have a homogeneous distribution. (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)

BARROS, WILLYAM R. P.; ERENO, THAIS; TAVARES, ANA C.; LANZA, MARCOS R. V.. In Situ Electrochemical Generation of Hydrogen Peroxide in Alkaline Aqueous Solution by using an Unmodified Gas Diffusion Electrode. CHEMELECTROCHEM, v. 2, n. 5, p. 714-719, MAY 13 2015. (13/06682-6, 11/06681-4, 11/00535-6)

BARROS, WILLYAM R. P.; STETER, JULIANA R.; LANZA, MARCOS R. V.; TAVARES, ANA C.. Catalytic activity of Fe3-xCuxO4 (0 <= x <= 0.25) nanoparticles for the degradation of Amaranth food dye by heterogeneous electro-Fenton process. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 180, p. 434-441, JAN 2016. (13/06682-6, 11/06681-4)