1. High electrocatalytic performance of nitrogen-doped carbon nanofiber-supported nickel oxide nanocomposite for methanol oxidation in alkaline medium
- Author
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Ahmed A. Elzatahry, Ajayan Vinu, Hideo Iwai, Salem S. Al-Deyab, Abdullah M. Al-Enizi, Aboubakr M. Abdullah, Al-Enizi, Abdullah M, Elzatahry, Ahmed A, Abdullah, Aboubakr M, Vinu, Ajayan, Iwai, Hideo, and Al-Deyab, Salem S
- Subjects
polyvinylpyrrolidone (PVP) ,Thermogravimetric analysis ,Materials science ,Inorganic chemistry ,methanol oxidation ,General Physics and Astronomy ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,law.invention ,chemistry.chemical_compound ,Adsorption ,law ,Polyaniline ,electrocatalysis ,Nanocomposite ,nitrogen-doped carbon ,Graphene ,Carbon nanofiber ,Surfaces and Interfaces ,General Chemistry ,Chronoamperometry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,0104 chemical sciences ,Surfaces, Coatings and Films ,chemistry ,carbon nanofibers ,Cyclic voltammetry ,0210 nano-technology ,Nuclear chemistry - Abstract
Nitrogen-Doped Carbon Nanofiber (N-CNF)–supported NiO composite was prepared by electrospinning a sol-gel mixture of graphene and polyaniline (PANi) with aqueous solutions of Polyvinylpyrrolidone (PVP) followed by a high-temperature annealing process. The electrospun was stabilized for 2 h at 280 °C, carbonized for 5 h at 1200 °C then loaded by 10% NiO. The electrocatalytic activities of the produced nanocomposite have been studied using cyclic voltammetry, and chronoamperometry. Also, N-CNF was characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), surface area (BET), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), and scanning-electron microscopy (SEM). The obtained N-doped carbon nanofiber was found to have a nitrogen content of 2.6 atomic% with a diameter range of (140–160) nm, and a surface area (393.3 m2 g−1). In addition, it showed a high electrocatalytic behavior towards methanol oxidation reaction in alkaline medium and high stability and resistivity to the adsorption of intermediates. Refereed/Peer-reviewed
- Published
- 2017