A water-based green approach to large-scale production of aqueous compatible graphene nanoplatelets
The unique properties of graphene are highly desired for printing electronics, coatings, energy storage, separation membranes, biomedicine, and composites. However, the high efficiency exfoliation of graphene into single- or few-layered nanoplates remains a grand challenge and becomes the bottleneck...
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| Veröffentlicht in: | Scientific reports 2018-04, Vol.8 (1), p.5567-8, Article 5567 |
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| creator | Ding, Ji-Heng Zhao, Hong-Ran Yu, Hai-Bin |
| description | The unique properties of graphene are highly desired for printing electronics, coatings, energy storage, separation membranes, biomedicine, and composites. However, the high efficiency exfoliation of graphene into single- or few-layered nanoplates remains a grand challenge and becomes the bottleneck in essential studies and applications of graphene. Here, we report a scalable and green method to exfoliate graphene nanoplatelets (GNPs) from nature graphite in pure water without using any chemicals or surfactants. The essence of this strategy lies in the facile liquid exfoliation route with the assistance of vapor pretreatment for the preparation of edge hydroxylated graphene. The produced graphene consisted primarily of fewer than ten atomic layers. Such the water soluble graphene can be stored in the form of dispersion (~0.55 g L
−1
) or filter cake for more than 6 months without the risk of re-stacking. This method paves the way for the environmentally friendly and cost-effective production of graphene-based materials. |
| doi_str_mv | 10.1038/s41598-018-23859-5 |
| format | Article |
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| subjects | 140/133 140/146 639/925/918/1055 704/172/169 Contact angle Energy storage Exfoliation Fourier transforms Graphene Graphite High temperature Humanities and Social Sciences Laboratories multidisciplinary Science Science (multidisciplinary) Solvents Spectrum analysis Surfactants |
| title | A water-based green approach to large-scale production of aqueous compatible graphene nanoplatelets |
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