High electrocatalytic performance of nitrogen-doped carbon nanofiber-supported nickel oxide nanocomposite for methanol oxidation in alkaline medium
| Autor: | Ahmed A. Elzatahry, Ajayan Vinu, Hideo Iwai, Salem S. Al-Deyab, Abdullah M. Al-Enizi, Aboubakr M. Abdullah |
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| Přispěvatelé: | Al-Enizi, Abdullah M, Elzatahry, Ahmed A, Abdullah, Aboubakr M, Vinu, Ajayan, Iwai, Hideo, Al-Deyab, Salem S |
| Rok vydání: | 2017 |
| Předmět: |
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 |
| Zdroj: | Applied Surface Science. 401:306-313 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.01.038 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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