Anastasia V. Tyurnina
Ultrasonic exfoliation of graphene in water: A key parameter study
Tyurnina, Anastasia V.; Tzanakis, Iakovos; Morton, Justin; Mi, Jiawei; Porfyrakis, Kyriakos; Maciejewska, Barbara; Grobert, Nicole; Eskin, Dmitry G.
Authors
Iakovos Tzanakis
Justin Morton
Professor Jiawei Mi J.Mi@hull.ac.uk
Professor of Materials
Kyriakos Porfyrakis
Barbara Maciejewska
Nicole Grobert
Dmitry G. Eskin
Abstract
Liquid Phase Exfoliation (LPE) is an efficient method for graphene flake exfoliation and considered to be compatible with industrial production requirements. However, most of available LPE methods require the use of harmful and expensive solvents for chemical exfoliation prior to mechanical dispersion of the flakes, and therefore an additional step is needed to remove the contamination caused by the added chemicals, making the process complex, costly, unsafe and detrimental to the environment. By studying the effects of key ultrasonic LPE parameters, our study demonstrates the possibility to control the production and quality of few-layer graphene flakes in pure water in a relatively short period of time. The driving frequency of an ultrasonic source, a higher acoustic cavitation intensity and uniform distribution of the cavitation events in the sonicated volume are the key parameters for controlling the thickness, surface area and production yield of few-layer graphene flakes. The results are discussed in the context of mechanical exfoliation. This opens a direction for developing LPE into a cost effective, clean, environmentally friendly, and scalable manufacturing process for the next generation of two-dimensional nanomaterials for industrial-scale applications.
Citation
Tyurnina, A. V., Tzanakis, I., Morton, J., Mi, J., Porfyrakis, K., Maciejewska, B., Grobert, N., & Eskin, D. G. (2020). Ultrasonic exfoliation of graphene in water: A key parameter study. Carbon, 168, 737-747. https://doi.org/10.1016/j.carbon.2020.06.029
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 10, 2020 |
Online Publication Date | Jun 29, 2020 |
Publication Date | Oct 30, 2020 |
Deposit Date | Apr 11, 2022 |
Publicly Available Date | Apr 12, 2022 |
Journal | Carbon |
Print ISSN | 0008-6223 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 168 |
Pages | 737-747 |
DOI | https://doi.org/10.1016/j.carbon.2020.06.029 |
Keywords | Ultrasonic exfoliation; Cavitation intensity; Few layer graphene; Ultrasonic frequency |
Public URL | https://hull-repository.worktribe.com/output/3536160 |
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Copyright Statement
© 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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