RODRIGO FERNANDO BRAMBILLA DE SOUZA
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Artigo IPEN-doc 20090 Glycerol electrooxidation in alkaline medium using Pd/C, Au/C and PdAu/C electrocatalysts prepared by electron beam irradiation2014 - GERALDES, ADRIANA N.; SILVA, DIONISIO F.; SILVA, JULIO C.M.; SOUZA, RODRIGO F.B.; SPINACE, ESTEVAM V.; OLIVEIRA NETO, ALMIR; LINARDI, MARCELO; SANTOS, MAURO C.Pd/C, Au/C and PdAu/C electrocatalysts with different atomic ratios prepared using electron beam irradiation were tested for glycerol electrooxidation in single alkaline direct glycerol fuel cell (ADGFC). X-ray diffractograms (XRD) of PdAu/C electrocatalysts showed the presence of Pd (fcc) and Au (fcc) phases. Cyclic voltammetry (CV) and chronoamperometry showed that PdAu/C electrocatalyst with Pd:Au atomic ratio of 50:50 demonstrated superior activity for glycerol electrooxidation, at room temperature. In situ Fourier transform infrared spectroscopy by attenuated total reflectance (ATR-FTIR) experiments were performed for the electrocatalysts, identifying oxalate, glycerate ion, 1,3-dihydroxy-2-propanone, glyceraldehyde and glycolate as products of glycerol electrooxidation. Experiments with single ADGFC were carried out from 50 to 90 °C, using Pd/C electrocatalyst; the best performance was obtained at 80 °C.Artigo IPEN-doc 18113 PtSnIr/C anode electrocatalysts: promoting effect in direct ethanol fuel cells2012 - SILVA, JULIO C.M.; SOUZA, RODRIGO F.B. de; ROMANO, MAYARA A.; D'VILLA SILVA, MELINA; CALEGARO, MARCELO L.; HAMMER, PETER; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C.Artigo IPEN-doc 19526 Ethanol oxidation reaction on IrPtSn/C electrocatalysts with low Pt content2013 - SILVA, JULIO C.M.; ANEA, BEATRIZ; SOUZA, RODRIGO F.B. de; ASSUMPCAO, MONICA H.M.T.; CALEGARO, MARCELO L.; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C.