Title of article :
Preparation of PtSnO2/C electrocatalysts using electron beam irradiation
Author/Authors :
Silva، نويسنده , , Dionيsio F. and Geraldes، نويسنده , , Adriana N. and Neto، نويسنده , , Almir Oliveira and Pino، نويسنده , , Eddy S. and Linardi، نويسنده , , Marcelo and Spinacé، نويسنده , , Estevam V. and Macedo، نويسنده , , Waldemar A.A. and Ardisson، نويسنده , , José D.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
PtSnO2/C electrocatalysts with Pt:Sn atomic ratios of 75:25, 50:50 and 25:75 were prepared in water/2-propanol using electron beam irradiation. The materials were characterized by energy-dispersive X-ray analysis, X-ray diffraction, Mِssbauer spectroscopy and transmission electron microscopy. The electro-oxidation of ethanol was studied by chronoamperometry at room temperature and on direct ethanol fuel cell (DEFC) at 100 °C. The X-ray diffraction and Mِssbauer measurements of the PtSnO2/C electrocatalysts showed typical face-centered cubic (fcc) structure of platinum and the presence of a SnO2 phase (cassiterite). The PtSnO2/C electrocatalysts were active for ethanol electro-oxidation and the material with Pt:Sn atomic ratio of 50:50 showed the best performance.
Keywords :
Platinum , electron beam , SnO2 , Ethanol , Fuel cell , Electrocatalyst
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
