Synthesis and characterization of nanostructured electrocatalysts for hydrogen peroxide in situ obtention and subsequent degradation of organic pollutants

• Grant number: 10/04539-3
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: June 01, 2010
• End date: February 28, 2013
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Mauro Coelho dos Santos
• Grantee: Mônica Helena Marcon Teixeira Assumpção
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Santo André , SP, Brazil

Abstract

The aim of this project is the development and application of nanostructured materials for advanced oxidation processes used in conjunction with electrochemical processes in order to treat water contaminated with benzene and / or furans. Co/C, W/C and Ce/C electrocatalysts will be prepared by the polymeric precursor method and characterized by physical techniques such as X ray diffraction (XRD), Energy Dispersive X-Ray (EDX) and Transmission Electron Microscopy (TEM). The efficiency of electrocatalysts will be first evaluated by voltammetric techniques (linear sweep voltammetry for oxygen reduction reaction (ORR) using a rotating ring-disk electrode). Subsequently, the degradation efficiency will be determined by initial and final concentrations of organic pollutants and, for this, the following techniques will be used for quantification: Gas Chromatography Coupled Mass Spectrometer (GC-MS), High Performance Liquid Chromatography (HPLC) and measurements of the concentration of total dissolved organic carbon (TOC). The possible dissolution of the catalysts will be evaluated by spectrophotommetry techniques like UV-Visible and / or Atomic Absorption Spectrometry with Flame Atomization and Inductively Coupled Plasma Optical Emission. The project aims to achieve better results for oxidation of benzene and furans combined with the lower costs of treatment, operation and mineralization, using nanostructured materials. (AU)

Scientific publications

(11)

(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)

MORAES, A.; ASSUMPCAO, M. H. M. T.; PAPAI, R.; GAUBEUR, I.; ROCHA, R. S.; REIS, R. M.; CALEGARO, M. L.; LANZA, M. R. V.; SANTOS, M. C.. Use of a vanadium nanostructured material for hydrogen peroxide electrogeneration. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 719, p. 127-132, APR 1 2014. (10/16511-6, 07/04759-0, 09/09145-6, 10/04539-3, 10/10546-2)

ASSUMPCAO, M. H. M. T.; MORAES, A.; DE SOUZA, R. F. B.; REIS, R. M.; ROCHA, R. S.; GAUBEUR, I.; CALEGARO, M. L.; HAMMER, P.; LANZA, M. R. V.; SANTOS, M. C.. Degradation of dipyrone via advanced oxidation processes using a cerium nanostructured electrocatalyst material. APPLIED CATALYSIS A-GENERAL, v. 462, p. 256-261, JUL 10 2013. (10/16511-6, 07/04759-0, 09/09145-6, 10/04539-3, 12/03516-5)

ASSUMPCAO, M. H. M. T.; RASCIO, D. C.; LADEIA, J. P. B.; DE SOUZA, R. F. B.; NETO, E. TEIXEIRA; CALEGARO, M. L.; OLIVEIRA, R. T. S.; GAUBEUR, I.; LANZA, M. R. V.; SANTOS, M. C.. Comparative Study of Different Methods for the Preparation of CoxOy/C for the Electrosynthesis of Hydrogen Peroxide. International Journal of Electrochemical Science, v. 6, n. 5, p. 1586-1596, MAY 2011. (07/04759-0, 09/09145-6, 10/04539-3)

ASSUMPCAO, M. H. M. T.; MORAES, A.; DE SOUZA, R. F. B.; CALEGARO, M. L.; LANZA, M. R. V.; LEITE, E. R.; CORDEIRO, M. A. L.; HAMMER, P.; SANTOS, M. C.. Influence of the preparation method and the support on H2O2 electrogeneration using cerium oxide nanoparticles. Electrochimica Acta, v. 111, p. 339-343, NOV 30 2013. (10/16511-6, 07/04759-0, 09/09145-6, 10/04539-3, 12/03516-5, 11/14314-1)

ANTONIN, V. S.; ASSUMPCAO, M. H. M. T.; SILVA, J. C. M.; PARREIRA, L. S.; LANZA, M. R. V.; SANTOS, M. C.. Synthesis and characterization of nanostructured electrocatalysts based on nickel and tin for hydrogen peroxide electrogeneration. Electrochimica Acta, v. 109, p. 245-251, OCT 30 2013. (11/21656-6, 10/16511-6, 10/04539-3)

ASSUMPCAO, M. H. M. T.; DE SOUZA, R. F. B.; REIS, R. M.; ROCHA, R. S.; STETER, J. R.; HAMMER, P.; GAUBEUR, I.; CALEGARO, M. L.; LANZA, M. R. V.; SANTOS, M. C.. Low tungsten content of nanostructured material supported on carbon for the degradation of phenol. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 142, p. 479-486, OCT-NOV 2013. (10/16511-6, 07/04759-0, 09/09145-6, 10/04539-3, 12/03516-5, 11/14314-1)

ASSUMPCAO, M. H. M. T.; MORAES, A.; DE SOUZA, R. F. B.; GAUBEUR, I.; OLIVEIRA, R. T. S.; ANTONIN, V. S.; MALPASS, G. R. P.; ROCHA, R. S.; CALEGARO, M. L.; LANZA, M. R. V.; et al. Low content cerium oxide nanoparticles on carbon for hydrogen peroxide electrosynthesis. APPLIED CATALYSIS A-GENERAL, v. 411, p. 1-6, JAN 16 2012. (10/16511-6, 07/04759-0, 09/09145-6, 10/04539-3)

ASSUMPCAO, M. H. M. T.; DE SOUZA, R. F. B.; RASCIO, D. C.; SILVA, J. C. M.; CALEGARO, M. L.; GAUBEUR, I.; PAIXAO, T. R. L. C.; HAMMER, P.; LANZA, M. R. V.; SANTOS, M. C.. A comparative study of the electrogeneration of hydrogen peroxide using Vulcan and Printex carbon supports. Carbon, v. 49, n. 8, p. 2842-2851, JUL 2011. (10/07831-7, 07/04759-0, 09/09145-6, 10/04539-3, 09/07859-1)

DE SOUZA, R. F. B.; SILVA, J. C. M.; ASSUMPCAO, M. H. M. T.; NETO, A. O.; SANTOS, MC.. Ethanol Oxidation Reaction Using PtSn/C plus Ce/C Electrocatalysts: Aspects of Ceria Contribution. Electrochimica Acta, v. 117, p. 292-298, JAN 20 2014. (10/16511-6, 10/04539-3, 13/01577-0, 12/03516-5)

SIMAS, P. S.; ANTONIN, V. S.; PARREIRA, L. S.; HAMMER, P.; SILVA, F. L.; KRONKA, M. S.; VALIM, R. B.; LANZA, M. R. V.; SANTOS, M. C.. Carbon Modified with Vanadium Nanoparticles for Hydrogen Peroxide Electrogeneration. ELECTROCATALYSIS, v. 8, n. 4, p. 311-320, JUL 2017. (11/00002-8, 10/04539-3, 10/16511-6, 11/21656-6, 07/04759-0, 09/09145-6, 15/10314-8)

MORAES, A.; ASSUMPCAO, M. H. M. T.; SIMOES, F. C.; ANTONIN, V. S.; LANZA, M. R. V.; HAMMER, P.; SANTOS, M. C.. Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration. ELECTROCATALYSIS, v. 7, n. 1, p. 60-69, JAN 2016. (07/04759-0, 09/09145-6, 10/04539-3, 11/21656-6, 09/07859-1)