A Total Research about Quick Synthesis of Ultrafine NiPd Bimetallic Nanoparticles and Their High Performance in Relation with Methanol Electrooxidation

In this research, uniform and sub-10 nm size bimetallic NiPd nanoparticles (NPs) have been synthesized via a simple and facile method without using any surfactants at an ambient temperature. The morphology, composition, and structure of NiPd NPs had been characterized by transmission electron microscopy (TEM), field emission high resolution transmission electron microscopy (FE-HRTEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscope (XPS). Comparing with both the monometallic Ni and Pd, the being prepared alloy nanoparticles exhibit superior electrocatalytic activity and better tolerance against poisoning by intermediates generated during methanol electrooxidation, which makes them a promising electrocatalysts for direct methanol fuel cells (DMFCs). Meanwhile, the green and simple approach could be easily extended to the manufacture of bimetallic or trimetallic alloy nanomaterials.