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Block copolymer templated synthesis of mesoporous WO.sub.3/carbon nanocomposites

Journal of materials science, 2022-08, Vol.57 (31), p.14772 [Peer Reviewed Journal]

COPYRIGHT 2022 Springer ;ISSN: 0022-2461 ;EISSN: 1573-4803 ;DOI: 10.1007/s10853-022-07564-3

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  • Title:
    Block copolymer templated synthesis of mesoporous WO.sub.3/carbon nanocomposites
  • Author: Bentley, John ; Bastakoti, Bishnu Prasad
  • Subjects: Povidone ; Raman spectroscopy
  • Is Part Of: Journal of materials science, 2022-08, Vol.57 (31), p.14772
  • Description: We synthesize mesoporous WO.sub.3/carbon composites with PS-PVP-PEO polymeric template. The molecularly dissolved polymer in THF self-assembles in positively charged spherical micelles upon the addition of HCl. The negatively charged tungsten source (WO.sub.4.sup.2-) binds strongly with positively charged polymeric micelles. Glucose, WO.sub.4.sup.2-, and micelles are assembled as a mesostructure during solvent evaporation. The carbonization of composites leads to mesoporous WO.sub.3/carbon nanocomposites. A polymeric micelle having unique blocks for porogen (polystyrene), reaction site (polyvinyl pyridine), and stabilizer (ethylene oxide) makes the system exceptional to synthesize mesoporous nanocomposites in a one-pot method. The nanocomposites were characterized by dynamic light scattering, scanning electron microscopy, transmission electron microscopy, Fourier transforms infrared spectroscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical studies reveal that the composites deliver 381 F.g.sup.-1 capacitance with 96% retention in 1 M H.sub.2SO.sub.4.
  • Publisher: Springer
  • Language: English
  • Identifier: ISSN: 0022-2461
    EISSN: 1573-4803
    DOI: 10.1007/s10853-022-07564-3
  • Source: ProQuest Central
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