Ethylenediaminetetraacetic acid mediated synthesis of palladium nanowire networks and their enhanced electrocatalytic performance for the hydrazine oxidation reaction
By Fumin Li and Yigang Ji and Shiman Wang and Shuni Li and Yu Chen
Published in Electrochimica Acta
2015
Abstract
\ABSTRACT\ Noble metal network nanostructures with three-dimensionally (3D) interconnected architectures are attracting much attention because of their unique catalytic, electrical, and optical properties. In this work, we report a facile ethylenediaminetetraacetic acid (EDTA) mediated chemical reduction route for the synthesis of high-quality palladium (Pd) nanowire networks (Pd-NWNWs). During the synthesis, \EDTA\ interacts with PdCl2 to generate EDTA-PdII complex, which efficiently decreases the reduction potential of PdII precursor. The slow reduction rate is crucial for the generation of Pd nanowires. The morphology, composition, and structure of Pd-NWNWs are fully investigated by various physical characterizations. The electrocatalytic activity of Pd-NWNWs for the hydrazine oxidation reaction (HOR) is also studied by cyclic voltammetry, electrochemical impedance spectroscopy, and chronoamperometry, etc. Compared to commercial Pd black, Pd-NWNWs exhibit remarkably improved electrocatalytic activity and stability for the HOR.