Development of Pd and Nb electrocatalysts for application in fuel cells and degradation of organic pollutants

• Grant number: 18/26307-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2019
• End date: January 31, 2020
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Mauro Coelho dos Santos
• Grantee: Paula Böhnstedt
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Associated research grant: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination, AP.TEM

Abstract

This project will address the synthesis of palladium (Pd) nanostructured electrocatalysts and/or Niobium (Nb) supported on Printex 6L and/or Vulcan XC72 carbon applied to electro-oxidation of glycerol in basic media for application to fuel cells (CaC), and still, applying them in the hydrogenation of hydrogen peroxide by Reduction Reaction Oxygen (RRO), for later application in oxidative electrochemical processes(PEOAs), aiming at the degradation of organic pollutants. The electrocatalysts will be synthesized by the method of Chemical Reduction via Sodium Borohydride (NaBH 4). For physical characterization, the following analyzes will be carried out: Electron Microscopy Scanning System (SEM); X-ray diffraction (XRD); Energy Spectroscopy Dispersive (EDS); Inductively Coupled Mass Spectrometry (ICP-MS) and X-ray Photoelectron Spectroscopy (XPS). In addition, the electrochemical characterization and electrocatalytic activity study for electro-oxidationglycerol by means of Cyclic Voltammetries (VC) and Chronoamperometry (CA), and for the of hydrogen peroxide by the rotary disc-ring electrode technique (RRDE) and Gas Diffusion Electrodes (EDGs). Will be quantified the generation of hydrogen peroxide by UV-Vis Absorption Spectrophotometry. Finally, these electrocatalysts will be applied to alkaline fuel cells and PEOAs aiming at the degradation of organic pollutants.

Scientific publications

(5)

(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)

KOMATSU, JENNY S.; SOUZA, FELIPE M.; PINHEIRO, VICTOR S.; BOHNSTEDT, PAULA; DE PAPE, POL W. G.; MANDELLI, DALMO; SANTOS, MAURO C.; CARVALHO, WAGNER A.. Cotton fabric derived alpha Fe magnetic porous carbon as electrocatalyst for alkaline direct ethanol fuel cell. CATALYSIS TODAY, v. 381, p. 65-75, DEC 1 2021. (17/22976-0, 15/10314-8, 17/10118-0, 18/01258-5, 18/26307-9, 17/26288-1, 17/24931-4, 17/21846-6)

MOURA SOUZA, F.; BOHNSTEDT, P.; PINHEIRO, V. S.; OLIVEIRA, L. A.; BATISTA, B. L.; PARREIRA, L. S.; ANTUNES, R. A.; SANTOS, M. C.. Niobium increasing the electrocatalytic activity of palladium for alkaline direct ethanol fuel cell. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 858, FEB 1 2020. (17/26288-1, 15/10314-8, 17/22976-0, 17/10118-0, 17/21846-6, 18/26307-9)

SOUZA, FELIPE M.; LIMA, THAYS S.; BOHNSTEDT, PAULA; PINHEIRO, VICTOR S.; BATISTA, BRUNO L.; PARREIRA, LUANNA S.; SIMOES, FABIO R.; CODOGNOTO, LUCIA; HAMMER, PETER; SANTOS, MAURO C.. Fast and Inexpensive Synthesis of Multilayer Graphene Used as Pd Support in Alkaline Direct Ethanol Fuel Cell Anode. ELECTROCATALYSIS, v. 12, n. 6, SEP 2021. (17/21846-6, 15/10314-8, 17/22976-0, 17/10118-0, 17/24742-7, 20/14100-0, 18/26307-9, 17/26288-1)

SOUZA, FELIPE M.; BOHNSTEDT, PAULA; PINHEIRO, VICTOR S.; PAZ, EDSON C.; PARREIRA, LUANNA S.; BATISTA, BRUNO L.; SANTOS, MAURO C.. Niobium Enhances Electrocatalytic Pd Activity in Alkaline Direct Glycerol Fuel Cells. CHEMELECTROCHEM, v. 6, n. 21, p. 5396-5406, OCT 31 2019. (15/10314-8, 17/22976-0, 17/10118-0, 17/21846-6, 18/26307-9)

PINHEIRO, VICTOR S.; SOUZA, FELIPE M.; GENTIL, TUANI C.; NASCIMENTO, ALINE N.; BOHNSTEDT, PAULA; PARREIRA, LUANNA S.; PAZ, EDSON C.; HAMMER, PETER; SAIRRE, I, MIRELA; BATISTA, BRUNO L.; et al. Sn-containing electrocatalysts with a reduced amount of palladium for alkaline direct ethanol fuel cell applications. RENEWABLE ENERGY, v. 158, p. 49-63, OCT 2020. (15/10314-8, 18/26307-9, 17/26288-1, 17/22976-0, 17/21846-6, 17/10118-0)