Synthesis of two-dimensional titanium nitride Ti4N3 (MXene)

Patrick Urbankowski, Babak Anasori, Taron Makaryan, Dequan Er, Sankalp Kota, Patrick L. Walsh, Mengqiang Zhao, Vivek B. Shenoy, Michel W. Barsoum, Yury Gogotsi

Research output: Contribution to journalArticlepeer-review

907 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)11385-11391
Number of pages7
JournalNanoscale
Volume8
Issue number22
DOIs
StatePublished - Jun 14 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science

Fingerprint

Dive into the research topics of 'Synthesis of two-dimensional titanium nitride Ti4N3 (MXene)'. Together they form a unique fingerprint.

Cite this