Biosynthesize of Zinc Oxide Nanoparticles and Their Promoter Actions in the Application of Pd/ZnO Catalyst for Electro-Oxidation of Ethanol

A rapid, green, and easy strategy for the biosynthesis of zinc oxide nanoparticles (ZnO-NPs) was described using Ducrosia anethifolia and Anabasis setifera plant extracts. The structures of biosynthesized ZnO-NPs were characterized by FT-IR, XRD, EDX, and FESEM techniques. Synthesized ZnO-NPs based on two recourses, also have been employed as the support and promoter in the synthesis of Pd/ZnO nanoparticles. The XRD, FESEM, EDX, and elemental mapping analyses are used to determine the phase and morphology of as-synthesized oxides. The electrochemical studies with cyclic voltammetry showed that the oxide synthesized by Ducrosia anethifolia plant extract had better promoting behavior than one Anabasis setifera for palladium in the oxidation of ethanol. It is due to the more porous structure of oxide synthesized by Ducrosia anethifolia plant extract than Anabasis setifera ; which resulted in a higher surface area and greater dispersion of palladium on the promoter. Graphical Abstract