Facile Synthesize of transition metal oxides nanostructures supported on HCNS as non-precious catalysts for hydrazine electro-oxidation reaction
Paper ID : 1108-ICNS
Authors:
sanaz taghadosi *
analytical chemistry.chemistry,sharif university of technology,tehran,iran
Abstract:
In this work, hollow carbon Nano spheres (HCNSs) were prepared by direct carbonization of polyaniline-co-polypyrrole (PACP) hollow spheres. Then, different NiO nanosheet/nanowire nanostructures (NiO-NSs@HCNSs, NiO-NWs@HCNSs) were grown around the HCNSs by simple hydrothermal processes. The morphology and structure of the materials were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) and electrochemical impedance spectroscopy (EIS). Then, NiO-NSs@HCNSs, NiO-NWs@HCNSs electrocatalysts were used as catalysts for evaluation of the hydrazine hydrate electro-oxidation. Different modified electrode are compared using cyclic voltammetry and chronoamperometry. The obtained results indicate that NiO-NSs@HCNSs and NiO-NWs@HCNSs provide high electrocatalytic activity and better stability. The overall results corroborate the role of different parameters such as: high conductivity of HCNSs, high accessible surface area of nanostructures and synergistic effect between NiO and HCNs. Thus, the prepared NiO nanostructure/carbon nanomaterial composite can be considered as a promising anode catalyst for Direct hydrazine fuel cells.
Keywords:
Hollow carbon nanospheres, Nickel oxide, Nanostructured composites, Hydrazine, Electrocatalytic oxidation
Status : Abstract Accepted (Poster Presentation)