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

High CO tolerance of Pt nanoparticles synthesized by sodium borohydride in a time-domain NMR spectrometer

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Author(s):
Ramos, A. S. [1] ; Santos, M. C. L. [1] ; Godoi, C. M. [1] ; de Queiroz, L. C. [2] ; Nandenha, J. [1] ; Fontes, E. H. [1] ; Brito, W. R. [2] ; Machado, M. B. [2] ; Neto, A. O. [1] ; de Souza, R. F. B. [1]
Total Authors: 10
Affiliation:
[1] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes, 2242 Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil
[2] Univ Fed Amazonas, UFAM, Cent Analyt, Av Gen Rodrigo Octavio Jordao Ramos, BR-69067005 Manaus, Amazonas - Brazil
Total Affiliations: 2
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 45, n. 43, p. 22973-22978, SEP 3 2020.
Web of Science Citations: 0
Abstract

The CO poisoning effect was overcome using a novel synthesis method. This method consists of using sodium borohydride reducing agent assisted by magnetic field and radiofrequency pulses in the time-domain NMR spectrometer. This synthesis was useful to disperse the Pt nanoparticles over the carbon support and to compress the lattice strain of the Pt crystalline structure. Besides that, Pt/C MFP90 degrees showed a multi-CO oxidation component in cyclic voltammetry, and this can avoid the poisoning effect by creating a large availability of CO species to be adsorbed, desorbed, and re-adsorbed. Pt/C MFP90 degrees has also shown the best performance in the PEMFC regarding H-2 and CO + H-2 experiments. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
Grantee:Marcelo Linardi
Support Opportunities: Research Projects - Thematic Grants