Ex-MWNTs: Graphene Sheets and Ribbons Produced by Lithium Intercalation and Exfoliation of Carbon Nanotubes
Ex-MWNTs: Graphene Sheets and Ribbons Produced by Lithium Intercalation and Exfoliation of Carbon Nanotubes
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DOI：
10.1021/nl803585s
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发表时间：
2009-04-01
期刊：
影响因子：
10.8
通讯作者：
Vega-Cantu, Yadira I.
中科院分区：
文献类型：
--
作者：
Cano-Marquez, Abraham G.;Rodriguez-Macias, Fernando J.;Vega-Cantu, Yadira I.
我们发现，多壁碳纳米管（MWNTs）可以打开纵向插入锂和氨，然后剥离。开口管的嵌入以及酸处理和突然加热的剥落提供了最好的结果。所得材料由以下组成：（i）多层平坦石墨结构（纳米带），（ii）部分开放的MWNT，和（iii）石墨烯薄片。我们称完全未缠绕的纳米管为前MWNTs，它们大量的边缘原子使它们对许多应用具有吸引力。
We found that multiwalled carbon nanotubes (MWNTs) can be opened longitudinally by intercalation of lithium and ammonia followed by exfoliation. Intercalation of open-ended tubes and exfoliation with acid treatment and abrupt heating provided the best results. The resulting material consists of: (i) multilayered flat graphitic structures (nanoribbons), (ii) partially open MWNTs, and (iii) graphene flakes. We called the completely unwrapped nanotubes ex-MWNTs, and their large number of edge atoms makes them attractive for many applications.