Issue 12, 2016

Fabrication and morphology tuning of graphene oxide nanoscrolls


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.

Graphical abstract: Fabrication and morphology tuning of graphene oxide nanoscrolls

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Article information

Article type
12 Nov 2015
22 Feb 2016
First published
23 Feb 2016
This article is Open Access
Creative Commons BY license

Nanoscale, 2016,8, 6783-6791

Author version available

Fabrication and morphology tuning of graphene oxide nanoscrolls

C. A. Amadei, I. Y. Stein, G. J. Silverberg, B. L. Wardle and C. D. Vecitis, Nanoscale, 2016, 8, 6783 DOI: 10.1039/C5NR07983G

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