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2D Ti3C2 nanosheets, multilayer structures, and conical scrolls produced by room temperature exfoliation of Ti3AlC2 in HF are reported. Since Ti3AlC2 is a member of a 60+ group of layered ternary carbides and nitrides, this discovery opens a door to the synthesis of a large number of other 2D crystals.
The cover shows a scanning electron microscopy (SEM) image of graphene‐like crystals of Ti3C2 called MXene. On page 4248 Yury Gogotsi, Michel W. Barsoum, and co‐workers describe the exfoliation of Ti3AlC2, a member of a 60+ group of layered ternary carbides and nitrides known as MAX phases, by etching the aluminum out in HF. This approach can be used to synthesize other 2D carbides and nitrides. Colored...
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