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Architected C70/Graphene Oxide Composites Prepared under Continuous Flow in a Vortex Fluidic Device: Implications for Supercapacitors
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    Architected C70/Graphene Oxide Composites Prepared under Continuous Flow in a Vortex Fluidic Device: Implications for Supercapacitors
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    • Thaar M. D. Alharbi*
      Thaar M. D. Alharbi
      Physics Department, Faculty of Science, Taibah University, Almadinah Almunawarrah 42353, Saudi Arabia
      Nanotechnology Centre, Taibah University, Almadinah Almunawarrah 42353, Saudi Arabia
      *Email: [email protected]
    • Amjad E. H. Alotaibi
      Amjad E. H. Alotaibi
      Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia
    • Colin L. Raston*
      Colin L. Raston
      Flinders Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia
      *Email: [email protected]
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    ACS Applied Nano Materials

    Cite this: ACS Appl. Nano Mater. 2023, 6, 13, 12507–12514
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    https://doi.org/10.1021/acsanm.3c02303
    Published June 14, 2023
    Copyright © 2023 American Chemical Society

    Abstract

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    Graphene oxide (GO) and fullerene C70 form architected-like C70/GO structures in high yield under continuous flow processing in a vortex fluidic device (VFD). The composite material forms within high-shear regimes in the thin film microfluidic platform, in the absence of surfactants, and indeed in the absence of any auxiliary substances. The structures form on intense micromixing of an o-xylene solution of C70 and a colloidal suspension of GO in dimethylformamide (DMF) at ambient conditions, with the liquids delivered through jet feeds at the same flow rate to the hemispherical base of the rapidly rotating quartz tube in the VFD, which is tilted at 45°. The particle sizes range from 0.5 to 3 μm, with their structure and properties explored using scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, X-ray powder diffraction, and Raman spectroscopy. The mechanism of formation of the architected-like structures is consistent with the general model of fluid flow in the VFD and arises from localized high-shear temperature regimes driving desolvation as the nucleation and growth step for crystallizing the fullerene component, which are then capped with GO.

    Copyright © 2023 American Chemical Society

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsanm.3c02303.

    • Figure S1: SEM images of fullerene C70 as received; Figure S2: SEM images of GO as received; Figure S3: SEM images of fullerene C70 dispersed in toluene and GO in DMF as with optimized concentrations and processing in the VFD at different rotational speeds, 4 and 8k rpm, under continuous flow; Figure S4: SEM images of fullerene C70 dispersed in m-xylene and GO in DMF as with optimized concentrations and processing in the VFD at different rotational speeds, 4 and 8k rpm, under continuous; and Figure S5: Raman spectra for architected carbon structure (PDF)

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    This article is cited by 2 publications.

    1. Anahita Motamedisade, Amir Heydari, Yanting Yin, Abdulrahman S. Alotabi, Gunther G. Andersson. Enhanced Photocatalytic Degradation of Methyl Orange Using Nitrogen‐Functionalized MesoporousTiO 2 Decorated with Au 9 Nanoclusters. Solar RRL 2024, 8 (7) https://doi.org/10.1002/solr.202300943
    2. Clarence Chuah, Xuan Luo, Javad Tavakoli, Youhong Tang, Colin L. Raston. Thin‐film flow technology in controlling the organization of materials and their properties. Aggregate 2024, 5 (1) https://doi.org/10.1002/agt2.433

    ACS Applied Nano Materials

    Cite this: ACS Appl. Nano Mater. 2023, 6, 13, 12507–12514
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsanm.3c02303
    Published June 14, 2023
    Copyright © 2023 American Chemical Society

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