F
Fabio C. Fonseca
Researcher at National Nuclear Energy Commission
Publications - 137
Citations - 3638
Fabio C. Fonseca is an academic researcher from National Nuclear Energy Commission. The author has contributed to research in topics: Catalysis & Nafion. The author has an hindex of 27, co-authored 126 publications receiving 3171 citations. Previous affiliations of Fabio C. Fonseca include Claude Bernard University Lyon 1 & University of São Paulo.
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Static and dynamic magnetic properties of spherical magnetite nanoparticles
TL;DR: In this paper, a detailed study of static and dynamic magnetic behavior of Fe3O4 nanoparticles with average particle sizes ranging from 5 to 150 nm is presented, and the existence of surface spin disorder can be inferred from the decrease of saturation magnetization MS at low temperatures, as the average particle size is reduced.
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Superparamagnetism and magnetic properties of Ni nanoparticles embedded in SiO 2
Fabio C. Fonseca,Gerardo F. Goya,R. F. Jardim,Reginaldo Muccillo,Neftalí L. V. Carreño,Elson Longo,Edson R. Leite +6 more
TL;DR: In this article, a detailed characterization of the magnetic properties of Ni nanoparticles embedded in a SiO2 amorphous matrix was performed using a modified sol-gel method which resulted in Ni particles with average radius ;3 nm, as inferred by TEM analysis.
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Nafion–TiO2 hybrid electrolytes for stable operation of PEM fuel cells at high temperature
Elisabete I. Santiago,R.A. Isidoro,Mauro André Dresch,Bruno R. Matos,Marcelo Linardi,Fabio C. Fonseca +5 more
TL;DR: In this article, the fabrication and characterization of Nafion-TiO2 hybrid electrolytes for proton exchange membrane fuel cell (PEMFC) operating at high temperature are reported.
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Effect of the type of ceria dopant on the performance of Ni/CeO2 SOFC anode for ethanol internal reforming
A.A.A. da Silva,Nicolas Bion,Florence Epron,S. Baraka,Fabio C. Fonseca,Raimundo C. Rabelo-Neto,Lisiane V. Mattos,Fabio B. Noronha +7 more
TL;DR: In this paper, the effect of the type of ceria dopant on the performance of Ni/CeO2 SOFC anode for ethanol conversion reaction was studied, and the results showed that Ni particles covered by NbOx species inhibited carbon formation.
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Structure, densification and electrical properties of Gd3+ and Cu2+ co-doped ceria solid electrolytes for SOFC applications: Effects of Gd2O3 content
Thamyscira H. Santos,João P.F. Grilo,Francisco J.A. Loureiro,Duncan P. Fagg,Fabio C. Fonseca,Daniel A. Macedo +5 more
TL;DR: In this article, the effects of gadolinium oxide (Gd2O3) content on the structure, densification and electrical properties of ceria co-doped with CuO were evaluated.