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A Mixed-Solvent Strategy for Efficient Exfoliation of Inorganic Graphene Analogues


  • This work is supported by National Natural Science Foundation of China (NSFC. 21073079, J1010067), the Fundamental Research Funds for the Central Universities National Basic Research Program of China (973 Program) No.2012CB933100 and 111 Project. Helps from Mr. Xin-Hua Li in the HRTEM characterizations is also acknowledged.


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Two are better than one: A mixed-solvent method for liquid exfoliation of MoS2, WS2, and BN nanosheets is presented. Although ethanol and water are both poor solvents for this process, ethanol/water mixtures of appropriate composition, which can be predicted on the basis of Hansen solubility parameters, result in efficient exfoliation (see schematic) to give highly stable suspensions.

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