srfeo3-δ assisting with pd nanoparticles on the performance of alcohols catalytic oxidation

Current catalysts for the alcohol oxidation in fuel cells (typically noble metals-based) are susceptible to poisoning with intermediates like co. hence we decided to find superseded catalysts for methanol oxidation based on incorporation of mixed oxides. in this research, a nano-size perovskite srfeo3-δ (srfeo3-δnps) was synthesized by a rapid co-precipitation method assisted with ultrasonic and characterized by xrd, ft-ir, sem and edx techniques. a modified glassy carbon electrode with pd nanoparticles (pdnps) and srfeo3-δnps dispersed into the appropriate amount of chitosan (ch) polymer as a multifunctional catalyst was prepared and its catalytic activity toward alcohols (c1 - c3) oxidation was investigated. based on the electrochemical studies, the pdnps-srfeo3-δnps-ch nanocomposite showed considerable activity for alcohols (c1 - c3) oxidation in comparison to pdnps-ch and srfeo3-δnps-ch. a direct methanol fuel cell was designed, assembled and tested with suggested pdnps-srfeo3-δnps-ch nanocomposite under several different conditions. the effect of experimental parameters (temperature; methanol concentration; flow rate) as well as naoh concentration) on the electrical performances of the fuel cell were studied and optimized.