Nb-doped TiO2/carbon composite supports synthesized by ultrasonic spray pyrolysis for proton exchange membrane (PEM) fuel cell catalysts

▸ Ultrasonic spray pyrolysis technique was employed to fabricate Nb doped TiO2/carbon composites. ▸ Microwave assisted polyol reduction was used to deposit PtPd catalysts on USP synthesized supports. ▸ Nb-doped TiO2/carbon composite materials are stable in acidic environment. ▸ Catalysts prepared using composite supports are 35% more active than commercial Pt/C catalysts.