Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration

Full text
Author(s):
Moraes, A. [1] ; Assumpcao, M. H. M. T. [1] ; Simoes, F. C. [1] ; Antonin, V. S. [1] ; Lanza, M. R. V. [2] ; Hammer, P. [3] ; Santos, M. C. [1]
Total Authors: 7
Affiliation:
[1] Univ Fed ABC, UFABC, CCNH, LEMN, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Caixa Postal 780, BR-13566590 Sao Carlos, SP - Brazil
[3] Univ Estadual Paulista, UNESP, Inst Quim, BR-14800060 Araraquara, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ELECTROCATALYSIS; v. 7, n. 1, p. 60-69, JAN 2016.
Web of Science Citations: 9
Abstract

This work focuses on the catalytic activity and surface modification of Vulcan XC 72R and Printex L6 toward the oxygen reduction reaction (ORR) after the carbon supports were subjected to a pre-treatment with nitric acid or ammonia. The results indicated that acid-treated Printex L6 was the best-suited material toward the two-electron pathway of the ORR. This material contained the largest concentration of oxygenated acid species and hydrogen, as determined by XPS, the Boehm method, and elemental analysis. The enhanced formation of H2O2 for acid-treated Printex L6 can be explained by the presence of oxygenated acid species increasing the hydrophilic character of the carbon support. The hydrophilicity of the material was investigated by contact angle measurements. However, the changes of the surface area, porosity, and the aliphatic chains of the carbons induced by the pre-treatments and the contributions of these factors to H2O2 production cannot be disregarded. (AU)

FAPESP's process: 10/04539-3 - Synthesis and characterization of nanostructured electrocatalysts for hydrogen peroxide in situ obtention and subsequent degradation of organic pollutants
Grantee:Mônica Helena Marcon Teixeira Assumpção
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 11/21656-6 - Binary nanostructured materials based on metals in electrogeration of hydrogen peroxide for ciprofloxacin degradation
Grantee:Vanessa da Silva Antonin
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 07/04759-0 - Gas diffusion electrodes modified by organometallic compounds for hydrogen peroxide production
Grantee:Marcos Roberto de Vasconcelos Lanza
Support type: Regular Research Grants
FAPESP's process: 09/07859-1 - Development of voltammetric electronic tongues towards the characterization and identification of adulteration and falsification processes of biofuels
Grantee:Thiago Regis Longo Cesar da Paixão
Support type: Regular Research Grants
FAPESP's process: 09/09145-6 - Study of ethanol electrochemical oxidation mechanism on PtSn, PtCe and PtSnCe using in-situ spectroscopic techniques
Grantee:Rodrigo Fernando Brambilla de Souza
Support type: Scholarships in Brazil - Doctorate