Two-Dimensional Nanosheets Produced by Liquid Exfoliation of Layered Materials
Two-Dimensional Nanosheets Produced by Liquid Exfoliation of Layered Materials
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DOI：
10.1126/science.1194975
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发表时间：
2011-02-04
期刊：
影响因子：
56.9
通讯作者：
Nicolosi, Valeria
中科院分区：
文献类型：
--
作者：
Coleman, Jonathan N.;Lotya, Mustafa;Nicolosi, Valeria
如果可以容易被去除角质，则分层材料将成为二维晶体的多种来源，其特性在从电子到储能的应用中都有用。我们表明，分层化合物，例如MOS（2），WS（2），Mose（2），Mote（2），Tase（2），NBSE（2），Nite（2），BN和BI（2）TE （3）可以有效地分散在普通溶剂中，并可以作为单个薄片沉积或形成膜中。电子显微镜强烈表明该材料被剥落成各个层。通过将这种材料与其他纳米材料或聚合物溶液的悬浮液混合，我们可以准备混合分散剂或复合材料，这些分散材料或复合材料可将其施加到膜中。我们表明，WS（2）和MOS（2）有效增强了聚合物，而WS（2）/碳纳米管混合膜具有很高的电导率，从而导致有希望的热电学性能。
If they could be easily exfoliated, layered materials would become a diverse source of two-dimensional crystals whose properties would be useful in applications ranging from electronics to energy storage. We show that layered compounds such as MoS(2), WS(2), MoSe(2), MoTe(2), TaSe(2), NbSe(2), NiTe(2), BN, and Bi(2)Te(3) can be efficiently dispersed in common solvents and can be deposited as individual flakes or formed into films. Electron microscopy strongly suggests that the material is exfoliated into individual layers. By blending this material with suspensions of other nanomaterials or polymer solutions, we can prepare hybrid dispersions or composites, which can be cast into films. We show that WS(2) and MoS(2) effectively reinforce polymers, whereas WS(2)/carbon nanotube hybrid films have high conductivity, leading to promising thermoelectric properties.