Vol. 2, Issue 3 (2018)
Palladium supported on titanium oxide nanoparticles as a catalyst for methanol oxidation reaction
Author(s): Nabil AN Alkadasi, MA Awad, MA Ghanem, AM Al-Mayouf
Abstract: In this work, TONPs powder (titanium oxide nanoparticles powder)prepared by anodization in 0.7 M HClO4 was annealed in N2 at 450°C for 3 h to obtain the TONPs-N2 powder as catalyst support to which Pd was loaded by photodeposition technique using PdCl2 and isopropanol as sacrificial donor. The resulting Pd-TONPs-N2 powder catalyst exhibited high surface area of 98m2/g. The physicochemical characterization of TONPs arrays powder were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive x-ray (EDX), and surface area and pore size analysis. The catalyst support TONPs arrays powder were electrochemically characterized in basic solution of methanol by cyclic voltammetry (CV), and chronoamperometry measurements. Pd-TONPs-N2 powder electrode catalyst exhibited a remarkably high electrocatalytic activity and has high electrocatalyticstability for methanol electrocatalytic oxidation reaction. Pd supported on the conductive support TONPs-N2 is used as electrocatalyst in fuel cells.