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Issue 22, 2016
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Synthesis of two-dimensional titanium nitride Ti4N3 (MXene)

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Abstract

We report on the synthesis of the first two-dimensional transition metal nitride, Ti4N3-based MXene. In contrast to the previously reported MXene synthesis methods – in which selective etching of a MAX phase precursor occurred in aqueous acidic solutions – here a molten fluoride salt is used to etch Al from a Ti4AlN3 powder precursor at 550 °C under an argon atmosphere. We further delaminated the resulting MXene to produce few-layered nanosheets and monolayers of Ti4N3Tx, where T is a surface termination (F, O, or OH). Density functional theory calculations of bare, non-terminated Ti4N3 and terminated Ti4N3Tx were performed to determine the most energetically stable form of this MXene. Bare and functionalized Ti4N3 are predicted to be metallic. Bare Ti4N3 is expected to show magnetism, which is significantly reduced in the presence of functional groups.

Graphical abstract: Synthesis of two-dimensional titanium nitride Ti4N3 (MXene)

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Article information


Submitted
17 Mar 2016
Accepted
09 May 2016
First published
23 May 2016

Nanoscale, 2016,8, 11385-11391
Article type
Communication

Synthesis of two-dimensional titanium nitride Ti4N3 (MXene)

P. Urbankowski, B. Anasori, T. Makaryan, D. Er, S. Kota, P. L. Walsh, M. Zhao, V. B. Shenoy, M. W. Barsoum and Y. Gogotsi, Nanoscale, 2016, 8, 11385
DOI: 10.1039/C6NR02253G

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