Development of livestock poultry waste based Ni-Co/S green nanocomposite catalysts: a facile one-pot in situ solvothermal method for alkaline methanol oxidation and super capacitor applications
Autor: | Vaithilingam Selvaraj, K. Arunkumar |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Nanocomposite Scanning electron microscope General Chemical Engineering General Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy General Materials Science Methanol Cyclic voltammetry 0210 nano-technology Methanol fuel Nuclear chemistry |
Zdroj: | Ionics. 27:3587-3603 |
ISSN: | 1862-0760 0947-7047 |
Popis: | The varying molar ratios of nickel-cobalt/sulphide nanoparticles coated on bio-carbon (Ni1.5Co0.5S/C, Ni1Co1S/C and Ni0.5Co1.5S/C), nickel-chalcogenide/bio-carbon (NiS/C) and cobalt-chalcogenide/bio-carbon (CoS/C) have been prepared though a facile single-step in situ solvothermal route using livestock poultry waste chicken feathers as sources for bio-carbon and bio-sulphur. The catalysts developed were characterized using different analytical techniques, viz., X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDAX) and cyclic voltammetry. The results obtained from the electrochemical characterization studies, it was inferred that the Ni1Co1S/C nanocatalyst possesses the higher methanol (0.5 M) oxidation current density in 0.5 M KOH with minimum onset potential when compared to that of other green composite catalysts, Ni1.5Co0.5S/C, Ni0.5Co1.5S/C and NiS/C developed in the present work. Further, the green nanocomposite Ni1Co1S/C synthesized was subjected to different studies in order to assess and ascertain its super capacitor characteristics. The results confirmed that the green nanocatalyst Ni1Co1S/C possesses the maximum value of specific capacitance of 785 F g−1 at a current density of 1 A g−1 in 3.0 M KOH solution. The enhanced performance of Ni1Co1S/C catalyst developed in the present work makes it suitable for the power generation and storage application, in addition to have an advantage of value added product of bio-carbon and sulphur derived from sustainable and renewable resource of livestock poultry waste. The present work is also considered as the first attempt to develop green nanocomposite Ni-Co sulphide/C electrocatalysts through a facile and cost-effective method and can be used for the development of direct methanol fuel cells (DMFCs) and super capacitor device design applications. |
Databáze: | OpenAIRE |
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