enhanced catalytic activity of pt-ndfeo3 nanoparticles supported on polyaniline-chitosan composite towards methanol electro-oxidation reaction

In this work, ndfeo3 nanoparticles were synthesized through a simple co-precipitation method. the formation of ndfeo3 particles was verified by x-ray powder diffraction, infrared spectroscopy, vibrating sample magnetometer, and transmission electron microscopy analysis. polyaniline and chitosan were employed as proper support for production of metal nanoparticles. novel pt-nfo/pa-ch nanocomposite was fabricated by immobilization of pt nanoparticles on the pa-ch support in the presence of ndfeo3 nanoparticles. the prepared nanocomposite was characterized by transmission electron microscopy and x-ray powder diffraction analysis. the catalytic performance of the pt-nfo/pa-ch nanocomposite was evaluated for electro-oxidation of methanol through co stripping voltammetry, cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. durability of the pt-nfo/pa-ch catalyst was investigated and the effects of several factors such as temperature, scan rate, and methanol concentration were studied for methanol oxidation. enhanced catalytic performance of pt-nfo/pa-ch nanocatalyst compared to pt/pa-ch catalyst recommends its application for methanol electro-oxidation in direct methanol fuel cells.