Gram-scale production of graphene based on solvothermal synthesis and sonication
Carbon nanostructures have emerged as likely candidates for a wide range of applications, driving research into novel synthetic techniques to produce nanotubes, graphene and other carbon-based materials. Single sheets of pristine graphene have been isolated from bulk graphite in small amounts by mic...
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| Vydané v: | Nature nanotechnology Ročník 4; číslo 1; s. 30 - 33 |
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| Hlavní autori: | , , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
London
Nature Publishing Group UK
01.01.2009
Nature Publishing Group |
| Predmet: | |
| ISSN: | 1748-3387, 1748-3395, 1748-3395 |
| On-line prístup: | Získať plný text |
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| Shrnutí: | Carbon nanostructures have emerged as likely candidates for a wide range of applications, driving research into novel synthetic techniques to produce nanotubes, graphene and other carbon-based materials. Single sheets of pristine graphene have been isolated from bulk graphite in small amounts by micromechanical cleavage
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, and larger amounts of chemically modified graphene sheets have been produced by a number of approaches
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,
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,
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,
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,
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,
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. Both of these techniques make use of highly oriented pyrolitic graphite as a starting material and involve labour-intensive preparations. Here, we report the direct chemical synthesis of carbon nanosheets in gram-scale quantities in a bottom-up approach based on the common laboratory reagents ethanol and sodium, which are reacted to give an intermediate solid that is then pyrolized, yielding a fused array of graphene sheets that are dispersed by mild sonication. The ability to produce bulk graphene samples from non-graphitic precursors with a scalable, low-cost approach should take us a step closer to real-world applications of graphene.
Most techniques for producing graphene use graphite as a starting material and are labour-intensive. The direct chemical synthesis of carbon nanosheets in gram-scale quantities from the common laboratory reagents ethanol and sodium has now been demonstrated. The ability to produce bulk graphene samples from non-graphitic precursors with a scalable, low-cost approach should take us a step closer to real-world applications of graphene. |
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| Bibliografia: | SourceType-Scholarly Journals-1 ObjectType-Correspondence-1 content type line 14 ObjectType-Article-2 content type line 23 |
| ISSN: | 1748-3387 1748-3395 1748-3395 |
| DOI: | 10.1038/nnano.2008.365 |