Fabrication and morphology tuning of graphene oxide nanoscrolls
Name
Wardle_Fabrication and Morphology.pdf
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3.92 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Amadei, Carlo A.
Stein, Itai Y.
Silverberg, Gregory J.
Wardle, Brian L.
Vecitis, Chad D.
Date Issued
February 2016
Journal
Nanoscale
Publisher
Royal Society of Chemistry
Citation
Amadei, Carlo A., Itai Y. Stein, Gregory J. Silverberg, Brian L. Wardle, and Chad D. Vecitis. “Fabrication and Morphology Tuning of Graphene Oxide Nanoscrolls.” Nanoscale 8, no. 12 (2016): 6783–6791.
Version
Final published version
Abstract
Here we report the synthesis of graphene oxide nanoscrolls (GONS) with tunable dimensions via low and high frequency ultrasound solution processing techniques. GONS can be visualized as a graphene oxide (GO) sheet rolled into a spiral-wound structure and represent an alternative to traditional carbon nano-morphologies. The scrolling process is initiated by the ultrasound treatment which provides the scrolling activation energy for the formation of GONS. The GO and GONS dimensions are observed to be a function of ultrasound frequency, power density, and irradiation time. Ultrasonication increases GO and GONS C–C bonding likely due to in situ thermal reduction at the cavitating bubble–water interface. The GO area and GONS length are governed by two mechanisms; rapid oxygen defect site cleavage and slow cavitation mediated scission. Structural characterization indicates that GONS with tube and cone geometries can be formed with both narrow and wide dimensions in an industrial-scale time window. This work paves the way for GONS implementation for a variety of applications such as adsorptive and capacitive processes.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution 3.0 Unported licence
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DOI of Published Version
https://doi.org/10.1039/c5nr07983g
