Direct synthesis of two-dimensional carbide and nitride mxenes
AssigneeThe University of Chicago
InventorsDmitri V. Talapin, Di Wang
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Abstract
Methods for the direct synthesis of two-dimensional transition metal carbides and nitrides known as MXenes by reacting a transition metal with a carbon halide compound or with a transition metal compound and a carbon or nitrogen source molecule are provided. The direct syntheses can be carried out using chemical vapor deposition (CVD) growth on a transition metal surface. The CVD growth of the MXenes can be used to form aligned sheets of the MXenes on a transition metal surface or hollow vesicles formed from sheets of the MXenes.
Claims24
A method for the direct synthesis of a two-dimensional transition metal carbide or nitride MXene having the formula M2XT2, where M is an early transition metal atom, X is carbon or nitrogen, and T is a surface terminating halogen atom, the method comprising:
- reacting the early transition metal with a carbon halide compound or reacting the early transition metal with an early transition metal halide compound and a carbon-precursor molecule or a nitrogen-precursor molecule at temperature at which the reaction forms the two-dimensional transition metal carbide or nitride MXene.
(canceled)
A two-dimensional transition metal carbide or nitride MXene selected from the group consisting of Ti2NCl2 and Nb2CBr2.
Two-dimensional transition metal carbide or nitride MXene sheets, wherein:
- the two-dimensional transition metal carbide or nitride sheets form a layer on a surface comprising an early transition metal, and further wherein the two-dimensional transition metal carbide or nitride MXene sheets are bound to and vertically aligned on the surface comprising the early transition metal;
- or the two-dimensional transition metal carbide or nitride MXene sheets form a vesicle in which the two-dimensional transition metal carbide or nitride MXene sheets surround and extend radially outward from a central void.
24-27. (canceled)
Dependencies are inferred from the claim text.