Dependence of Palladium Catalysts on the Crystal Plane in the Methanol Oxidation Reaction

To improve the activity of the catalyst, adjusting the crystal surface of the catalyst is considered an effective way. Therefore, in the current study, the methanol oxidation reaction was investigated on palladium (Pd) particles of various lattice planes on the multiwalled carbon nanotube. This nanotube was synthesized using an alcohol-reduction process. In this process, potassium bromide (KBr) was used as a shape-directing agent. This process was employed for a better understanding of the relationship between the catalyst properties and the electrochemical performance. The findings of this experimental study showed that Pd nanoparticles with palladium acetate (Pd(111)) provided superior power densities and better stability. Our work provides a novel approach to obtaining catalysts with proper activity and stability due to the exponential distribution of the crystal plane.