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Open AccessJournal ArticleDOI

Electronic and Optical Properties of 2D Transition Metal Carbides and Nitrides (MXenes).

Kanit Hantanasirisakul, +1 more
- 01 Dec 2018 - 
- Vol. 30, Iss: 52, pp 1804779
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TLDR
In this paper, the electronic and optical properties of 2D transition metal carbides, carbonitrides, and nitrides are discussed from both theoretical and experimental perspectives, as well as applications related to those properties.
Abstract
2D transition metal carbides, carbonitrides, and nitrides, known as MXenes, are a rapidly growing family of 2D materials with close to 30 members experimentally synthesized, and dozens more studied theoretically. They exhibit outstanding electronic, optical, mechanical, and thermal properties with versatile transition metal and surface chemistries. They have shown promise in many applications, such as energy storage, electromagnetic interference shielding, transparent electrodes, sensors, catalysis, photothermal therapy, etc. The high electronic conductivity and wide range of optical absorption properties of MXenes are the key to their success in the aforementioned applications. However, relatively little is currently known about their fundamental electronic and optical properties, limiting their use to their full potential. Here, MXenes' electronic and optical properties from both theoretical and experimental perspectives, as well as applications related to those properties, are discussed, providing a guide for researchers who are exploring those properties of MXenes.

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Citations
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Journal ArticleDOI

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

TL;DR: A forward-looking review of the field of 2D carbides and nitrides can be found in this article, where the challenges to be addressed and research directions that will deepen the fundamental understanding of the properties of MXenes and enable their hybridization with other 2D materials in various emerging technologies are discussed.

Pseudocapacitive Electrodes Produced By Oxidant-Free Polymerization of Pyrrole Between the Layers of 2D Titanium Carbide (MXene)

TL;DR: Heterocyclic pyrrole molecules are in situ aligned and polymerized in the absence of an oxidant between layers of the 2D Ti3C2Tx (MXene), resulting in high volumetric and gravimetric capacitances with capacitance retention of 92% after 25,000 cycles at a 100 mV s(-1) scan rate as discussed by the authors.
Journal ArticleDOI

Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti3CNTx (MXene)

TL;DR: It is shown that a two-dimensional transition metal carbonitride, Ti3CNTx MXene, with a moderate electrical conductivity, provides a higher shielding effectiveness compared with more conductiveTi3C2Tx or metal foils of the same thickness.
Journal ArticleDOI

Two-dimensional MXenes: From morphological to optical, electric, and magnetic properties and applications

TL;DR: In this article, the state-of-the-art progress on MXene theory, materials synthesis techniques, morphology modifications, opto-electro-magnetic properties, and their applications are comprehensively discussed.
Journal ArticleDOI

Ultraflexible and Mechanically Strong Double-Layered Aramid Nanofiber-Ti3C2Tx MXene/Silver Nanowire Nanocomposite Papers for High-Performance Electromagnetic Interference Shielding.

TL;DR: The results indicate that the double-layered nanocomposite papers have excellent potential for high-performance EMI shielding and thermal management applications in aerospace, military and artificial intelligence, smart and wearable electronics.
References
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Journal ArticleDOI

Two-dimensional transition metal carbides and nitrides (MXenes) for biomedical applications.

TL;DR: This review introduces the preparation methods and surface modifications with respect to MXenes, and highlights their various biomedical applications, such as with biosensors, antibacterial materials, bioimaging probes, therapeutics, and theranostics.
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Charge- and Size-Selective Ion Sieving Through Ti3C2Tx MXene Membranes

TL;DR: Micrometer-thick MXene membranes demonstrated ultrafast water flux of 37.4 L/(Bar·h·m(2)) and differential sieving of salts depending on both the hydration radius and charge of the ions.
Journal ArticleDOI

Electronic properties and applications of MXenes: a theoretical review

TL;DR: In this paper, a review highlights the computational attempts that have been made to understand the physics and chemistry of this very promising family of advanced two-dimensional materials, and to exploit their novel and exceptional properties for electronic and energy harvesting applications.
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Two-dimensional heterostructures for energy storage

TL;DR: Pomerantseva et al. as discussed by the authors argue that stacking different 2D materials into heterostructured architectures opens an opportunity to construct electrodes that would combine the advantages of the individual building blocks while eliminating the associated shortcomings.
Journal ArticleDOI

Broadband Nonlinear Photonics in Few-Layer MXene Ti3C2Tx (T = F, O, or OH)

TL;DR: In this paper, the authors systematically characterized the nonlinear optical response of MXene Ti3C2Tx nanosheets over the spectral range of 800 nm to 1800 nm, and they demonstrated the efficient broadband light signal manipulating capabilities of the large MXene family.
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