Ultrasonic exfoliation of graphene in water: A key parameter study
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 dispersi...
| Main Authors: | , , , , , , , |
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| פורמט: | Journal article |
| יצא לאור: |
Elsevier
2020
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| _version_ | 1826260145134370816 |
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| author | Tyurnina, AV Tzanakis, I Morton, J Mi, J Porfyrakis, K Maciejewska, BM Grobert, N Eskin, DG |
| author_facet | Tyurnina, AV Tzanakis, I Morton, J Mi, J Porfyrakis, K Maciejewska, BM Grobert, N Eskin, DG |
| author_sort | Tyurnina, AV |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-06T19:00:59Z |
| format | Journal article |
| id | oxford-uuid:1384d9de-9f3f-4280-ab8b-4f7b2f6adc7a |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:00:59Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:1384d9de-9f3f-4280-ab8b-4f7b2f6adc7a2022-03-26T10:14:22ZUltrasonic exfoliation of graphene in water: A key parameter studyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1384d9de-9f3f-4280-ab8b-4f7b2f6adc7aSymplectic ElementsElsevier2020Tyurnina, AVTzanakis, IMorton, JMi, JPorfyrakis, KMaciejewska, BMGrobert, NEskin, DGLiquid 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. |
| spellingShingle | Tyurnina, AV Tzanakis, I Morton, J Mi, J Porfyrakis, K Maciejewska, BM Grobert, N Eskin, DG Ultrasonic exfoliation of graphene in water: A key parameter study |
| title | Ultrasonic exfoliation of graphene in water: A key parameter study |
| title_full | Ultrasonic exfoliation of graphene in water: A key parameter study |
| title_fullStr | Ultrasonic exfoliation of graphene in water: A key parameter study |
| title_full_unstemmed | Ultrasonic exfoliation of graphene in water: A key parameter study |
| title_short | Ultrasonic exfoliation of graphene in water: A key parameter study |
| title_sort | ultrasonic exfoliation of graphene in water a key parameter study |
| work_keys_str_mv | AT tyurninaav ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT tzanakisi ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT mortonj ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT mij ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT porfyrakisk ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT maciejewskabm ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT grobertn ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy AT eskindg ultrasonicexfoliationofgrapheneinwaterakeyparameterstudy |