Effects of green solvents and surfactants on the characteristics of few-layer graphene produced by dual-frequency ultrasonic liquid phase exfoliation technique
Nowadays, one of the promising methods for scalable graphene production is ultrasound-aided liquid phase exfoliation (ULPE) of graphite. Two current limiting factors of ULPE are the use of harmful solutions (such as NMethyl-2-pyrrolidone or Dimethylformamide) and a relatively low graphene yield. In...
| Published in: | Carbon Vol. 206. P. 7-15 |
|---|---|
| Other Authors: | , , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001017256 Перейти в каталог НБ ТГУ |
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| 005 | 20240119173608.0 | ||
| 007 | cr | | ||
| 008 | 240116|2023 enk s a eng d | ||
| 024 | 7 | |a 10.1016/j.carbon.2023.01.062 |2 doi | |
| 035 | |a koha001017256 | ||
| 040 | |a RU-ToGU |b rus |c RU-ToGU | ||
| 245 | 1 | 0 | |a Effects of green solvents and surfactants on the characteristics of few-layer graphene produced by dual-frequency ultrasonic liquid phase exfoliation technique |c A. V. Tyurnina, J. A. Morton, A. Kaur [et al.] |
| 336 | |a Текст | ||
| 337 | |a электронный | ||
| 504 | |a Библиогр.: 61 назв. | ||
| 520 | 3 | |a Nowadays, one of the promising methods for scalable graphene production is ultrasound-aided liquid phase exfoliation (ULPE) of graphite. Two current limiting factors of ULPE are the use of harmful solutions (such as NMethyl-2-pyrrolidone or Dimethylformamide) and a relatively low graphene yield. In this study, we demonstrate a new dual frequency (20 kHz and 1174 kHz) ULPE approach in various eco-friendly media, which enabled us to produce various few-layer graphene (FLG) solutions of high quality. By implementing sophisticated characterisation techniques consisting of Raman spectroscopy, UV-vis spectroscopy and high-resolution electron microscopy, the final graphene flakes structure was confirmed to correlate the properties of each individual solution. The thinner (~3 layers) and larger (~1.5 μm2) flakes were observed while using just water, with the highest yield (11%) of smaller FLG flakes to be achieved in the mixture of water and a surfactant. In order to understand the cavitation mechanism in different solutions, the ULPE process was investigated by acoustic measurements. This study demonstrates the crucial role of ethanol (as a solvent) and surfactants as it regulates the cavitation power and intensity of the ultrasonic field and, thereby, the cavitation effectiveness. It is suggested that the mixture of water, ethanol and a surfactant is the best medium for ULPE process where a high yield of low-defective FLG flakes can be obtained in a solution stable at least for 3 months (around 80%) | |
| 653 | |a графен | ||
| 653 | |a акустическое давление | ||
| 653 | |a ультразвуковой пилинг | ||
| 653 | |a экологичные решения | ||
| 653 | |a ударные волны | ||
| 655 | 4 | |a статьи в журналах |9 918721 | |
| 700 | 1 | |a Tyurnina, Anastasia V. |9 918720 | |
| 700 | 1 | |a Morton, Justin A. |9 918722 | |
| 700 | 1 | |a Kaur, Amanpreet |9 918723 | |
| 700 | 1 | |a Mi, Jiawei |9 472991 | |
| 700 | 1 | |a Grobert, Nicole |9 918724 | |
| 700 | 1 | |a Porfyrakis, Kyriakos |9 918725 | |
| 700 | 1 | |a Tzanakis, Iakovos |9 441036 | |
| 700 | 1 | |a Eskin, Dmitry G. |9 102250 | |
| 773 | 0 | |t Carbon |d 2023 |g Vol. 206. P. 7-15 |x 0008-6223 | |
| 852 | 4 | |a RU-ToGU | |
| 856 | 4 | |u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001017256 | |
| 856 | |y Перейти в каталог НБ ТГУ |u https://koha.lib.tsu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=1017256 | ||
| 908 | |a статья | ||
| 999 | |c 1017256 |d 1017256 | ||
| 039 | |b 100 | ||