Author/Authors :
M. Khachane، نويسنده , , P. Nowakowski، نويسنده , , S. Villain، نويسنده , , J.R. Gavarri، نويسنده , , Ch. Muller، نويسنده , , M. Elaatmani، نويسنده , , A. Outzourhite، نويسنده , , I. Luk’yanchuk، نويسنده , , A. Zegzouti، نويسنده , , Amjad M. Daoud، نويسنده ,
Abstract :
Catalytic ruthenium dioxide films were deposited by spin-coating process on ferroelectric films mainly constituted of SrBi2Ta2O9 (SBT) and Ba2NaNb5O15 (BNN) phases. After thermal treatment under air, these ferroelectric–catalytic systems were characterized by X-ray diffraction and scanning electron microscopy (SEM). SEM images showed that RuO2 film morphology depended on substrate nature. A study of CH4 conversion into CO2 and H2O was carried out using these catalytic–ferroelectric multilayers: the conversion was analyzed from Fourier transform infrared (FTIR) spectroscopy, at various temperatures. Improved catalytic properties were observed for RuO2 films deposited on BNN oxide layer.
Keywords :
Ruthenium dioxide , Multilayer , Infrared spectroscopy , Catalytic measurements , Sol–gel processing
