Synthesis of Two-Dimensional Nb1.33C (MXene) with Randomly Distributed Vacancies by Etching of the Quaternary Solid Solution (Nb2/3Sc1/3)2AlC MAX Phase

@article{Halim2018SynthesisOT,
  title={Synthesis of Two-Dimensional Nb1.33C (MXene) with Randomly Distributed Vacancies by Etching of the Quaternary Solid Solution (Nb2/3Sc1/3)2AlC MAX Phase},
  author={Joseph Halim and Justinas Palisaitis and J. Lu and Jimmy Th{\"o}rnberg and E. J. Moon and M. Precner and Per Eklund and Per O. {\AA}. Persson and Michel W. Barsoum and Johanna Rosen},
  journal={ACS Applied Nano Materials},
  year={2018}
}
Introducing point defects in two-dimensional (2D) materials can alter or enhance their properties. Here, we demonstrate how etching a laminated (Nb2/3Sc1/3)2AlC MAX phase (solid solution) of both the Sc and Al atoms results in a 2D Nb1.33C material (MXene) with a large number of vacancies and vacancy clusters. This method is applicable to any quaternary, or higher, MAX phase, wherein one of the transition metals is more reactive than the other and could be of vital importance in applications… 

Figures from this paper

Synthesis of (V2/3Sc1/3)2AlC i-MAX phase and V2-xC MXene scrolls.

A path for improved control of MXene synthesis and morphology, which may be applicable also for other MAX/MXene systems is shown, with in-plane chemical ordering between the M-elements.

Electronic and optical characterization of 2D Ti2C and Nb2C (MXene) thin films.

  • J. HalimI. Persson M. Barsoum
  • Physics, Materials Science
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
It is demonstrated that one fruitful approach to alter the electronic and optical properties of MXenes is to change the nature of the transition metal.

Synthesis of Mo4VAlC4 MAX Phase and Two-Dimensional Mo4VC4 MXene with 5 Atomic Layers of Transition Metals.

This study demonstrates the existence of an additional subfamily of M5X4Tx MXenes as well as a twinned structure, allowing for a wider range of 2D structures and compositions for more control over properties, which could lead to many different applications.

On the Chemical Diversity of the MAX Phases

Theoretical Prediction and Synthesis of a Family of Atomic Laminate Metal Borides with In-Plane Chemical Ordering

The discovery of i-MAB phases expands the elemental space of these borides with M = Sc, Y, Zr, Hf, and Nb, realizing an increased property tuning potential of these phases as well as their suggested potential two-dimensional derivatives.

Magnetic phase transition from paramagnetic in Nb2AlC-MAX to superconductivity-like diamagnetic in Nb2C-MXene: an experimental and computational analysis

Transition metal carbides (TMCs) have recently emerged as competent members among the family of two-dimensional (2D) materials, owing to their promising applications. There are many promising

Ion Implantation as an Approach for Structural Modifications and Functionalization of Ti3C2Tx MXenes.

Modifications of two-dimensional MXenes by low-energy ion implantation are demonstrated, leading to the incorporation of Mn ions in Ti3C2Tx thin films, thereby promoting the functionalization of these sites with oxygen groups.

MXenes: focus on optical and electronic properties and corresponding applications

Abstract The discovery of graphene, the first two-dimensional (2D) material, has caused an upsurge, as this kind of material revealed a tremendous potential of application in areas such as energy
...

References

SHOWING 1-10 OF 82 REFERENCES

Two-dimensional Mo1.33C MXene with divacancy ordering prepared from parent 3D laminate with in-plane chemical ordering

This work designs a parent 3D atomic laminate, (Mo2/3Sc1/3)2AlC, with in-plane chemical ordering, and by selectively etching the Al and Sc atoms, shows evidence for 2D Mo1.33C sheets with ordered metal divacancies and high electrical conductivities.

Theoretical and Experimental Exploration of a Novel In-Plane Chemically Ordered (Cr2/3M1/3)2AlC i-MAX Phase with M = Sc and Y

We have uncovered two inherently laminated transition metal carbides, (Cr2/3Sc1/3)2AlC and (Cr2/3Y1/3)2AlC, which display in-plane chemical order in carbide sheet and Kagome pattern in Al layer. The

Two-dimensional transition metal carbides.

Evidence is presented for the exfoliation of the following MAX phases by the simple immersion of their powders, at room temperature, in HF of varying concentrations for times varying between 10 and 72 h followed by sonication.

A Two-Dimensional Zirconium Carbide by Selective Etching of Al3C3 from Nanolaminated Zr3Al3C5.

The obtained 2D Zr3C2T(z) exhibits relatively better ability to maintain 2D nature and strucural integrity compared to Ti-based Mxene and the difference in structural stability under high temperature condition is explained by a theoretical investigation on binding energy.

Synthesis and compressibility of Ti3(Al,Sn0.2)C2 and Ti3Al(C0.5,N0.5)2

In this paper we report on the synthesis of a composition, Ti3Al(C0.5,N0.5)2, belonging to the Mn+1AXn family of ternary layered carbides and nitrides. X-ray and selected area diffraction confirm

Two‐Dimensional Nb‐Based M4C3 Solid Solutions (MXenes)

Herein, two new two-dimensional Nb4C3-based solid solutions (MXenes), (Nb-0.8,Ti-0.2)(4)C3Tx and (Nb-0.8,Zr-0.2)(4)C3Tx (where T is a surface termination) were synthesizedas confirmed by X-ray diff

A Two-Dimensional Zirconium Carbide by Selective Etching of Al 3 C 3 from Nanolaminated Zr 3 Al 3 C 5

We report the room temperature synthesis of a new two-dimensional (2D) zirconium-containing carbide, Zr3C2Tz MXene. In contrast to traditional preparation of MXene, the layered ternary Zr3Al3C5

Layered ternary Mn+1AXnphases and their 2D derivative MXene: An overview from a thin-film perspective

Inherently and artificially layered materials are commonly investigated both for fundamental scientific purposes and for technological application. When a layered material is thinned or delaminated

Recent progress in layered transition metal carbides and/or nitrides (MXenes) and their composites: synthesis and applications

Since their inception in 2011, from the inaugural synthesis of multi-layered Ti3C2Tx by etching Ti3AlC2 with hydrofluoric acid (HF), novel routes with a myriad of reducing agents, etchants and
...