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Nanomaterials
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Nanoengineering of 2D MXene-Based Materials
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Nanoengineering of 2D MXene-Based Materials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 17094

Special Issue Editors

Prof. Dr. Bin Yu

E-Mail Website
Guest Editor
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, China
Interests: 2D materials; MXene; graphene; hexagonal boron nitride; polymer; composites; fire safety; sustainability
Prof. Dr. Xiaodong Qian

E-Mail Website
Guest Editor
Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, China
Interests: flame retardant materials; new efficient fire extinguishing technology; safety and health of firefighters
Dr. Saihua Jiang

E-Mail Website
Guest Editor
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China
Interests: bionic adhesion robot; application of adhesion robot; functionalization; chemical synthesis; photocatalysis; heterojunction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Two-dimensional (2D) MXenes represent a new family of 2D transition metal carbides, nitrides, and carbonitrides, which were first prepared from the layered MAX phases in 2011. Since then, 2D MXenes have generated intensive research interest, due to their diverse compositions and structure, and fascinating properties, such as outstanding metallic conductivity, high-charge carrier mobility, diverse surface chemistry, and favorable mechanical properties. These unique properties enable MXenes to show promising applications, e.g., used in batteries and electrocatalysis, and investigations on MXenes are growing at the booming stage. Various nano-engineering strategies have been explored to fabricate MXene-based materials, leading to possibilities of more potential applications. Accordingly, we cordially invite you to contribute to novel developments and advances in the field of nano-engineered 2D MXenes, including preparation, characterization and properties, experimental and computational studies, as well as the possibilities for their potential applications. It is expected that this new rich class of 2D materials will grow rapidly as an innovations-generating field. Potential topics will include, but not be limited to:

  • Eco-friendly fabrication approaches to 2D MXenes
  • New nano-modification of 2D MXenes
  • 2D MXene-based composites
  • 2D MXene-based fire-safe materials
  • Nano-engineering 2D MXenes for energy storage and conversion
  • Nano-engineering 2D MXenes for electrocatalysis and photocatalysis
  • Nano-engineering 2D MXenes for electromagnetic shielding
  • Computation and simulation of nano-engineered 2D MXenes

This Special Issue welcomes contributions in the form of full papers, communications, perspectives, and reviews.

Prof. Dr. Bin Yu
Prof. Dr. Xiaodong Qian
Dr. Saihua Jiang
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 papers will be 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 and 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. Nanomaterials is an international peer-reviewed open access journal published monthly 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 2200 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

  • MXene
  • 2D materials
  • Nanoengineering
  • Energy
  • Catalysis
  • Electromagnetic shielding
  • Fire safety

Published Papers (5 papers)

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Research

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15 pages, 9764 KiB  
Article
Metal-organic Framework ZIF-67 Functionalized MXene for Enhancing the Fire Safety of Thermoplastic Polyurethanes
by Mei Wan, Congling Shi, Xiaodong Qian, Yueping Qin, Jingyun Jing and Honglei Che
Nanomaterials 2022, 12(7), 1142; https://doi.org/10.3390/nano12071142 - 29 Mar 2022
Cited by 23 | Viewed by 4585
Abstract
In this work, a novel functionalization strategy for ZIF-67-modified layered MXene was proposed, aiming at improving the fire safety of thermoplastic polyurethanes (TPU). The ZIF-67@MXene was verified by microscopic morphology, elemental composition, functional group species and crystal structure, and then the successfully prepared [...] Read more.
In this work, a novel functionalization strategy for ZIF-67-modified layered MXene was proposed, aiming at improving the fire safety of thermoplastic polyurethanes (TPU). The ZIF-67@MXene was verified by microscopic morphology, elemental composition, functional group species and crystal structure, and then the successfully prepared ZIF-67@MXene was introduced into the TPU material. When ZIF-67@MXene content was only 0.5 wt%, the peak heat release rate, total heat release rate, peak smoke release rate, total smoke release rate, and CO yield of the TPU/ZIF-67@MXene composites were reduced by 26%, 9%, 50%, and 22%, respectively, compared with the pure TPU. The thermogravimetric tests showed that the residual char of TPU/ZIF-67@MXene composites was the most in all samples. In short, the high-quality carbon layer of TPU/ZIF-67@MXene composites acts as a physical barrier to the transfer of heat and toxic gases, greatly improving the flame retardant properties of the TPU polymer. Full article
(This article belongs to the Special Issue Nanoengineering of 2D MXene-Based Materials)
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9 pages, 2583 KiB  
Article
Artificial Neurons Based on Ag/V2C/W Threshold Switching Memristors
by Yu Wang, Xintong Chen, Daqi Shen, Miaocheng Zhang, Xi Chen, Xingyu Chen, Weijing Shao, Hong Gu, Jianguang Xu, Ertao Hu, Lei Wang, Rongqing Xu and Yi Tong
Nanomaterials 2021, 11(11), 2860; https://doi.org/10.3390/nano11112860 - 27 Oct 2021
Cited by 25 | Viewed by 3638
Abstract
Artificial synapses and neurons are two critical, fundamental bricks for constructing hardware neural networks. Owing to its high-density integration, outstanding nonlinearity, and modulated plasticity, memristors have attracted emerging attention on emulating biological synapses and neurons. However, fabricating a low-power and robust memristor-based artificial [...] Read more.
Artificial synapses and neurons are two critical, fundamental bricks for constructing hardware neural networks. Owing to its high-density integration, outstanding nonlinearity, and modulated plasticity, memristors have attracted emerging attention on emulating biological synapses and neurons. However, fabricating a low-power and robust memristor-based artificial neuron without extra electrical components is still a challenge for brain-inspired systems. In this work, we demonstrate a single two-dimensional (2D) MXene(V2C)-based threshold switching (TS) memristor to emulate a leaky integrate-and-fire (LIF) neuron without auxiliary circuits, originating from the Ag diffusion-based filamentary mechanism. Moreover, our V2C-based artificial neurons faithfully achieve multiple neural functions including leaky integration, threshold-driven fire, self-relaxation, and linear strength-modulated spike frequency characteristics. This work demonstrates that three-atom-type MXene (e.g., V2C) memristors may provide an efficient method to construct the hardware neuromorphic computing systems. Full article
(This article belongs to the Special Issue Nanoengineering of 2D MXene-Based Materials)
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11 pages, 5048 KiB  
Article
MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels
by Kejun Shi, Xinyu Meng, Shu Xiao, Guohua Chen, Hao Wu, Chilou Zhou, Saihua Jiang and Paul K. Chu
Nanomaterials 2021, 11(10), 2737; https://doi.org/10.3390/nano11102737 - 16 Oct 2021
Cited by 15 | Viewed by 3892
Abstract
MXenes are a new class of two-dimensional (2D) materials with promising applications in many fields because of their layered structure and unique performance. In particular, the physical barrier properties of two-dimensional nanosheets make them suitable as barriers against hydrogen. Herein, MXene coatings were [...] Read more.
MXenes are a new class of two-dimensional (2D) materials with promising applications in many fields because of their layered structure and unique performance. In particular, the physical barrier properties of two-dimensional nanosheets make them suitable as barriers against hydrogen. Herein, MXene coatings were prepared on pipe steel by a simple spin-coating process with a colloidal suspension. The hydrogen resistance was evaluated by electrochemical hydrogen permeation tests and slow strain rate tests, and the corrosion resistance was assessed by potentiodynamic polarization. The results reveal that MXene coatings offer excellent hydrogen resistance and corrosion protection by forming a barrier against diffusion. Experimentally, the hydrogen permeability of the MXene coating is one third of the substrate, and the diffusion coefficient decreases as well. The mechanistic study indicates that the hydrogen resistance of the MXene coatings is affected by the number of spin-coated layers, while the concentration of the d-MXene colloidal suspension determines the thickness of a single coating. However, damage to the sample surface caused by the colloidal suspension that contains H+ and F− may limit the improvement of the hydrogen resistance. This paper reveals a new application of 2D MXene materials as a novel efficient barrier against hydrogen permeation and the subsequent alleviation of hydrogen embrittlement in the steel substrate. Full article
(This article belongs to the Special Issue Nanoengineering of 2D MXene-Based Materials)
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Review

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21 pages, 6395 KiB  
Review
Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures
by Ruxue Yang, Xiyue Chen, Wei Ke and Xin Wu
Nanomaterials 2022, 12(11), 1907; https://doi.org/10.3390/nano12111907 - 2 Jun 2022
Cited by 17 | Viewed by 3463
Abstract
Two-dimensional (2D) materials have received increasing attention in the scientific research community owing to their unique structure, which has endowed them with unparalleled properties and significant application potential. However, the expansion of the applications of an individual 2D material is often limited by [...] Read more.
Two-dimensional (2D) materials have received increasing attention in the scientific research community owing to their unique structure, which has endowed them with unparalleled properties and significant application potential. However, the expansion of the applications of an individual 2D material is often limited by some inherent drawbacks. Therefore, many researchers are now turning their attention to combine different 2D materials, making the so-called 2D heterostructures. Heterostructures can integrate the merits of each component and achieve a complementary performance far beyond a single part. MXene, as an emerging family of 2D nanomaterials, exhibits excellent electrochemical, electronic, optical, and mechanical properties. MXene-based heterostructures have already been demonstrated in applications such as supercapacitors, sensors, batteries, and photocatalysts. Nowadays, increasing research attention is attracted onto MXene-based heterostructures, while there is less effort spent to summarize the current research status. In this paper, the recent research progress of MXene-based heterostructures is reviewed, focusing on the structure, common preparation methods, and applications in supercapacitors, sensors, batteries, and photocatalysts. The main challenges and future prospects of MXene-based heterostructures are also discussed to provide valuable information for the researchers involved in the field. Full article
(This article belongs to the Special Issue Nanoengineering of 2D MXene-Based Materials)
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57 pages, 16270 KiB  
Review
MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications
by Maksym Pogorielov, Kateryna Smyrnova, Sergiy Kyrylenko, Oleksiy Gogotsi, Veronika Zahorodna and Alexander Pogrebnjak
Nanomaterials 2021, 11(12), 3412; https://doi.org/10.3390/nano11123412 - 16 Dec 2021
Cited by 66 | Viewed by 7902
Abstract
A new class of two-dimensional nanomaterials, MXenes, which are carbides/nitrides/carbonitrides of transition and refractory metals, has been critically analyzed. Since the synthesis of the first family member in 2011 by Yury Gogotsi and colleagues, MXenes have quickly become attractive for a variety of [...] Read more.
A new class of two-dimensional nanomaterials, MXenes, which are carbides/nitrides/carbonitrides of transition and refractory metals, has been critically analyzed. Since the synthesis of the first family member in 2011 by Yury Gogotsi and colleagues, MXenes have quickly become attractive for a variety of research fields due to their exceptional properties. Despite the fact that this new family of 2D materials was discovered only about ten years ago, the number of scientific publications related to MXene almost doubles every year. Thus, in 2021 alone, more than 2000 papers are expected to be published, which indicates the relevance and prospects of MXenes. The current paper critically analyzes the structural features, properties, and methods of synthesis of MXenes based on recent available research data. We demonstrate the recent trends of MXene applications in various fields, such as environmental pollution removal and water desalination, energy storage and harvesting, quantum dots, sensors, electrodes, and optical devices. We focus on the most important medical applications: photo-thermal cancer therapy, diagnostics, and antibacterial treatment. The first results on obtaining and studying the structure of high-entropy MXenes are also presented. Full article
(This article belongs to the Special Issue Nanoengineering of 2D MXene-Based Materials)
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