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Dear Colleagues,

MXenes, a new and exciting class of two-dimensional materials, became one of the hot topics in scientist community. MXenes has attracted a great deal of attention due to its unique structure and morphology, mechanical property, carrier mobility, a wide range of compositions and excellent properties including ease of dispersibility and metallic conductivity. These properties render them promising candidates for use as composites or hybrid formations. Initially graphene was the most widely practiced anisotropic filler used in polymer nanocomposites. After a long period of time, MXenes came to the front because of their single step processing, excellent electrical conductivity, easy heat dissipation behavior, and capacitor like properties. MXenes hold its outstanding versatility in nanocomposites formations, resulting in new material types with outstanding functional and mechanical properties and extensively studied regarding optoelectronics, energy storage, adsorption, wastewater treatment, catalysis, sensors, health, and biological and environmental protection. In this Special Issue, original peer-reviewed papers covering all aspects of MXenes and their composites will be published. Original experimental papers as well as review papers will be considered.

Subjects include but are not limited to preparation method and technical route of MXenes and their various nanocomposites, their performance and applications in biomedical, sensing, energy, electromagnetic absorption and shielding, catalysis, chemisorption, sewage purification, flame retardance, separation membranes, and antibacterial property etc. In general, this section provides a platform for MXenes for the publication of original and scientific research that is likely to have a large general impact, also with the aim of initiating other special issues.

The aim of this Special Issue is to gather new developments and future trends on MXenes for environmental, energy, and health and biological utility. We welcome both original research and review articles.

Dr. Poushali Das
Prof. Dr. Andreas Rosenkranz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

MXenes
nanocomposites
synthesis
properties
energy applications
biomedical and biological applications
environmental applications

Published Papers (2 papers)

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Research

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14 pages, 8414 KiB

Open AccessArticle

Boron Carbide as an Electrode Material: Tailoring Particle Morphology to Control Capacitive Behaviour

by Suna Avcıoğlu, Merve Buldu-Akturk, Emre Erdem, Figen Kaya and Cengiz Kaya

Materials 2023, 16(2), 861; https://doi.org/10.3390/ma16020861 - 16 Jan 2023

Cited by 3 | Viewed by 2148

Abstract

In this study, boron carbide powders consisting mainly of nano/micro fibers or polyhedral-equiaxed particles were synthesized via the sol–gel technique, and the influence of particle morphology on electrochemical performance of boron carbide electrodes was investigated. Thermal decomposition duration of the precursors played a determinant role in the final morphology of the synthesized boron carbide powders. The morphology of boron carbide powders successfully tuned from polyhedral-equiaxed (with ~3 µm average particle size) to nano/micro fibers by adjusting the thermal decomposition duration of precursors. The length and thickness of fibers were in the range of 30 to 200 µm and sub-micron to 5 µm, respectively. The electrochemical performance analysis of boron carbide powders has shown that the particle morphology has a considerable impact on the boron carbide electrodes electrochemical performance. It was found that the synergetic effects of polyhedral-equiaxed and nano/micro fiber morphologies exhibited the best electrochemical performance in supercapacitor devices, resulting in the power and energy density of 34.9 W/kg and 0.016 Wh/kg, respectively. Full article

(This article belongs to the Special Issue MXenes and Their Composites for Emerging Applications)

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Graphical abstract

Review

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23 pages, 6668 KiB

Open AccessEditor’s ChoiceReview

MXene (Ti₃C₂T_x)-Embedded Nanocomposite Hydrogels for Biomedical Applications: A Review

by Fouad Damiri, Md. Habibur Rahman, Mehrukh Zehravi, Aeshah A. Awaji, Mohammed Z. Nasrullah, Heba A. Gad, Mutasem Z. Bani-Fwaz, Rajender S. Varma, Mousa O. Germoush, Hamdan S. Al-malky, Amany A. Sayed, Satish Rojekar, Mohamed M. Abdel-Daim and Mohammed Berrada

Materials 2022, 15(5), 1666; https://doi.org/10.3390/ma15051666 - 23 Feb 2022

Cited by 34 | Viewed by 5764

Abstract

Polymeric nanocomposites have been outstanding functional materials and have garnered immense attention as sustainable materials to address multi-disciplinary problems. MXenes have emerged as a newer class of 2D materials that produce metallic conductivity upon interaction with hydrophilic species, and their delamination affords monolayer nanoplatelets of a thickness of about one nm and a side size in the micrometer range. Delaminated MXene has a high aspect ratio, making it an alluring nanofiller for multifunctional polymer nanocomposites. Herein, we have classified and discussed the structure, properties and application of major polysaccharide-based electroactive hydrogels (hyaluronic acid (HA), alginate sodium (SA), chitosan (CS) and cellulose) in biomedical applications, starting with the brief historical account of MXene’s development followed by successive discussions on the synthesis methods, structures and properties of nanocomposites encompassing polysaccharides and MXenes, including their biomedical applications, cytotoxicity and biocompatibility aspects. Finally, the MXenes and their utility in the biomedical arena is deliberated with an eye on potential opportunities and challenges anticipated for them in the future, thus promoting their multifaceted applications. Full article

(This article belongs to the Special Issue MXenes and Their Composites for Emerging Applications)

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