Scalable production of large single-layered graphenes by microwave exfoliation 'in deionized water'

Title
Scalable production of large single-layered graphenes by microwave exfoliation 'in deionized water'
Authors
이성현Hye-Rim KimKun-Hong Lee
Issue Date
2018-08
Publisher
Carbon
Citation
VOL 134-438
Abstract
Single-layered graphenes with large sizes were produced by inserting solvent molecules between the graphene layers in graphite intercalation compounds (GICs) followed by direct microwave exfoliation ‘in a solvent’ to prevent re-aggregation. During the microwave exfoliation of GICs in deionized (DI) water, single-layered graphenes were produced, and their lateral sizes ranged from several micrometers to several tens of micrometers. The entire process time was less than 2  h, and toxic compounds were not used. In the case of microwave exfoliation in acetone or ethanol, graphenes with a thickness of 3– 6  nm were mainly produced rather than single-layered graphenes. In addition, when the produced graphenes were directly dispersed in DI water, the dispersed state was maintained for 2 days. This method is very advantageous for industrial scale-up.
URI
http://pubs.kist.re.kr/handle/201004/69758
ISSN
0008-6223
Appears in Collections:
KIST Publication > Article
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