M5X4: A Family of MXenes

Dahlqvist, Martin, 1982- (author): Linköpings universitet,Materialdesign,Tekniska fakulteten

Rosén, Johanna, Professor, 1975- (author): Linköpings universitet,Materialdesign,Tekniska fakulteten

(creator_code:org_t)

AMER CHEMICAL SOC, 2023
2023
English.
In: ACS Nano. - : AMER CHEMICAL SOC. - 1936-0851 .- 1936-086X. ; 17:17, s. 17158-17168

Related links:: https://liu.diva-por... (primary) (Raw object); show more...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

MXenes are two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides typically synthesized from layered MAX-phase precursors. With over 50 experimentally reported MXenes and a near-infinite number of possible chemistries, MXenes make up the fastest-growing family of 2D materials. They offer a wide range of properties, which can be altered by their chemistry (M, X) and the number of metal layers in the structure, ranging from two in M2XTx to five in M5X4T x . Only one M5X4 MXene, Mo4VC4, has been reported. Herein, we report the synthesis and characterization of two M(5)AX(4) mixed transition metal MAX phases, Ti2.5Ta2.5AlC4 and Ti2.675Nb2.325AlC4, and their successful topochemical transformation into Ti2.5Ta2.5C4T x and Ti2.675Nb2.325C4Tx MXenes. The resulting MXenes were delaminated into single-layer flakes, analyzed structurally, and characterized for their thermal and optical properties. This establishes a family of M(5)AX(4) MAX phases and their corresponding MXenes. These materials were experimentally produced based on guidance from theoretical predictions, leading to more exciting applications for MXenes.

By the author/editor: Downes, Marley; Shuck, Christoph ...; Lord, Robert W.; Anayee, Mark; Shekhirev, Mikha ...; Wang, Ruocun Joh ...; show more...; Hryhorchuk, Teti ...; Dahlqvist, Marti ...; Rosén, Johanna, ...; Gogotsi, Yury; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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