Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration
| Autor: | A. Moraes, M.C. Santos, V. S. Antonin, Peter Hammer, F. C. Simões, Mônica H. M. T. Assumpção, Marcos R.V. Lanza |
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| Přispěvatelé: | Universidade Federal do ABC (UFABC), Universidade de São Paulo (USP), Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Electrogeneration of hydrogen peroxide
Hydrogen Inorganic chemistry chemistry.chemical_element 02 engineering and technology Carbon supports 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Contact angle chemistry.chemical_compound Ammonia chemistry Nitric acid Electrochemistry Oxygen reduction reaction (ORR) CARBONO Surface modification 0210 nano-technology Hydrogen peroxide Carbon |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Made available in DSpace on 2018-12-11T17:26:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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. LEMN - Laboratório de Eletroquímica e Materiais Nanoestruturados - CCNH -Centro de Ciências Naturais e Humanas UFABC - Universidade federal do ABC, CEP 09.210-170, Rua Santa Adélia 166, Bairro Bangu Instituto de Química de São Carlos Universidade de São Paulo, Caixa Postal 780 Instituto de Química UNESP Universidade Estadual Paulista Instituto de Química UNESP Universidade Estadual Paulista CNPq: 150639/2013-9 CAPES: 2005/59992-6 FAPESP: 2005/59992-6 CAPES: 2007/04759-0 FAPESP: 2007/04759-0 CAPES: 2008/58789-0 FAPESP: 2008/58789-0 CAPES: 2009/07859-1 FAPESP: 2009/07859-1 CAPES: 2009/09145-6 FAPESP: 2009/09145-6 CAPES: 2010/04539-3 FAPESP: 2010/04539-3 CAPES: 2011/21656-6 FAPESP: 2011/21656-6 CNPq: 406612/2013-7 CNPq: 474913/2012-0 CNPq: 577292/2008-0 |
| Databáze: | OpenAIRE |
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