Covalent surface modifications and superconductivity of two-dimensional metal carbide MXenes

  title={Covalent surface modifications and superconductivity of two-dimensional metal carbide MXenes},
  author={Vladislav Kamysbayev and Alexander S. Filatov and Huicheng Hu and Xue Rui and Francisco Lagunas and Di Wang and Robert F. Klie and Dmitri V. Talapin},
  pages={979 - 983}
Modifying MXene surfaces Unlike graphene and transition-metal dichalcogenides, two-dimensional transition-metal carbides (MXenes) have many surface sites that can be chemically modified. Etching of the aluminum layer of a parent MAX phase Ti3AlC2 layered material with hydrofluoric acid leads to the MXene Ti3C2 with various surface terminations. Molten salts can achieve uniform chloride terminations, but these are difficult to further modify. Kamysbayev et al. show that etching of MAX phases in… 

Termination-Property Coupling via Reversible Oxygen Functionalization of MXenes

MXenes are a growing family of 2D transition-metal carbides and nitrides, which display excellent performance in myriad of applications. Theoretical calculations suggest that manipulation of the

Atomic-resolution in-situ cooling study of functionally terminated 2D transition metal carbides.

MXenes are a family of two-dimensional materials synthesized by etching select elements from a parent MAX crystal. Aided by their ability to undergo surface group transformations, MXenes offer

Simultaneously tuning interlayer spacing and termination of MXenes by Lewis-basic halides

The surface and interface chemistry are of significance on controlling the properties of two-dimensional transition metal carbides and nitrides (MXenes). Numerous efforts have been devoted to the

Covalent Surface Modification of Ti3C2Tx MXene with Chemically Active Polymeric Ligands Producing Highly Conductive and Ordered Microstructure Films.

This work reports a chemically important surface modification approach in which "solvent-like" polymers, polyethylene glycol carboxylic acid (PEG6-COOH), are covalently attached onto MXenes via esterification chemistry, and allows for control over the degree of functionalization of MXene.

High-Temperature Stability and Phase Transformations of Titanium Carbide (Ti3C2Tx) MXene

Two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides, known as MXenes, are under increasing pressure to meet technological demands in high-temperature applications, as MXenes

Single-Layer Dititanium Oxide Ti2O MOene: Multifunctional Promises for Electride, Anode Materials, and Superconductor.

The existence of the single-layer (SL) dititanium oxide Ti2O (labeled as MOene) that constructs a novel family of MXene based on transition-metal oxides strongly contrasts the conventional ones consisting of transition- metal carbides and/or nitrides is reported.

The world of two-dimensional carbides and nitrides (MXenes)

The ability of MXenes to form carbonitrides and solid solutions suggests a potentially infinite number of compositions and opens a new era of computationally driven atomistic design of 2D materials.

In-situ doping nickel single atoms in two-dimensional MXenes analogue support for room temperature NO2 sensing

MXenes are promising supports for anchoring metal single atoms due to their versatile composition, well-defined nanostructures, and suitable conductivity. However, metal single atoms are usually

Enhancing the Energy Storage Capabilities of Ti3C2Tx MXene Electrodes by Atomic Surface Reduction

MXenes are a large class of 2D materials that consist of few‐atoms‐thick layers of transition metal carbides, nitrides, or carbonitrides. The surface functionalization of MXenes has immense



Structural, mechanical and electronic properties of two-dimensional chlorine-terminated transition metal carbides and nitrides

This work implies that the chlorine-functionalized MXenes could be utilized in semiconductors and metallic films.

2D metal carbides and nitrides (MXenes) for energy storage

The family of 2D transition metal carbides, carbonitrides and nitrides (collectively referred to as MXenes) has expanded rapidly since the discovery of Ti3C2 in 2011. The materials reported so far

Superior structural, elastic and electronic properties of 2D titanium nitride MXenes over carbide MXenes: a comprehensive first principles study

The structural, elastic and electronic properties of two-dimensional (2D) titanium carbide/nitride based pristine (Tin+1Cn/Tin+1Nn) and functionalized MXenes (Tin+1CnT2/Tin+1NnT2, T stands for the

Transparent Conductive Two-Dimensional Titanium Carbide Epitaxial Thin Films

This work reports on the fabrication of ∼1 × 1 cm2 Ti3C2 films by selective etching of Al, from sputter-deposited epitaxial Ti3AlC 2 films, in aqueous HF or NH4HF2, and opens the door for the use of MXenes in electronic, photonic, and sensing applications.

Schottky-Barrier-Free Contacts with Two-Dimensional Semiconductors by Surface-Engineered MXenes.

Understanding of the correlation between surface chemistry and electronic/transport properties of 2D materials is enhanced, and predictions for improving 2D electronics are given.

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.

On the organization and thermal behavior of functional groups on Ti3C2 MXene surfaces in vacuum

The two-dimensional (2D) MXene Ti3C2Tx is functionalized by surface groups (Tx) that determine its surface properties for, e.g. electrochemical applications. The coordination and thermal properties

Novel Electronic and Magnetic Properties of Two‐Dimensional Transition Metal Carbides and Nitrides

Layered MAX phases are exfoliated into 2D single layers and multilayers, so‐called MXenes. Using first‐principles calculations, the formation and electronic properties of various MXene systems, M2C

Colloidal Gelation in Liquid Metals Enables Functional Nanocomposites of 2D Metal Carbides (MXenes) and Lightweight Metals.

This work expands applications for MXenes and shows the potential for developing MXene-reinforced metal matrix composites for structural alloys and other emerging applications with metal-MXene interfaces, such as batteries and supercapacitors.

Single platinum atoms immobilized on an MXene as an efficient catalyst for the hydrogen evolution reaction

AbstractSingle-atom catalysts offer a pathway to cost-efficient catalysis using the minimal amount of precious metals. However, preparing and keeping them stable during operation remains a challenge.