dc.contributor | Universidade Estadual Paulista (UNESP) | |
dc.creator | Assumpcao, M. H. M. T. | |
dc.creator | De Souza, R. F. B. | |
dc.creator | Rascio, D. C. | |
dc.creator | Silva, J. C. M. | |
dc.creator | Calegaro, M. L. | |
dc.creator | Gaubeur, I. | |
dc.creator | Paixao, T. R. L. C. | |
dc.creator | Hammer, Peter | |
dc.creator | Lanza, M. R. V. | |
dc.creator | Santos, Mirian Cristina dos | |
dc.date | 2014-05-20T15:30:49Z | |
dc.date | 2016-10-25T18:06:28Z | |
dc.date | 2014-05-20T15:30:49Z | |
dc.date | 2016-10-25T18:06:28Z | |
dc.date | 2011-07-01 | |
dc.date.accessioned | 2017-04-06T00:19:06Z | |
dc.date.available | 2017-04-06T00:19:06Z | |
dc.identifier | Carbon. Oxford: Pergamon-Elsevier B.V. Ltd, v. 49, n. 8, p. 2842-2851, 2011. | |
dc.identifier | 0008-6223 | |
dc.identifier | http://hdl.handle.net/11449/40126 | |
dc.identifier | http://acervodigital.unesp.br/handle/11449/40126 | |
dc.identifier | 10.1016/j.carbon.2011.03.014 | |
dc.identifier | WOS:000290083900030 | |
dc.identifier | http://dx.doi.org/10.1016/j.carbon.2011.03.014 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/882932 | |
dc.description | A comparative study of two different conductive carbon-black pigments, Vulcan XC-72 R and Printex L6, for the electrogeneration of hydrogen peroxide (H(2)O(2)) by reducing dissolved oxygen in an alkaline solution was performed. The materials were physically characterized by X-ray diffraction (XRD), Fourier transform infrared attenuated total reflection (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). XRD shows the presence of SO(2) and ATR-FTIR technique indicates a difference in NO and SO(2) functional groups between the two carbon pigments. XPS indicated presence of SO and NO and more oxygenated acid species on Printex L6. A rotating ring-disk electrode was used for electrochemical analysis of the oxygen reduction reaction (ORR). The results showed that the Printex L6 was better than Vulcan XC-72 R for H(2)O(2) production. Results also indicate that the number of electrons transferred in the ORR for Printex L6 and Vulcan XC-72 R were 2.2 and 2.9, respectively, while the percentages of H(2)O(2) formed were 88% and 51%. Scanning electrochemistry microscopy images confirmed the higher amount of H(2)O(2) formed in the Printex L6 pigment. Printex L6 was shown to be a more promising for H(2)O(2) production than Vulcan XC-72 R, while the latter was shown to have more potential for fuel cells. (C) 2011 Elsevier Ltd. All rights reserved. | |
dc.description | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.language | eng | |
dc.publisher | Pergamon-Elsevier B.V. Ltd | |
dc.relation | Carbon | |
dc.rights | info:eu-repo/semantics/closedAccess | |
dc.title | A comparative study of the electrogeneration of hydrogen peroxide using Vulcan and Printex carbon supports | |
dc.type | Otro | |