Recent Advances in Two-Dimensional Monolayer Nanomaterials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "2D and Carbon Nanomaterials".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 4402

Special Issue Editors


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Guest Editor
Shenzhen Key Laboratory for Advanced Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Interests: photoelectric materials and devices; new energy materials and devices; two-dimensional materials and their applications

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Guest Editor
Center for Programmable Materials, School of Material Science and Engineering, Nanyang Technological University, Singapore 637798, Singapore
Interests: synthesis of high-quality 2D crystal (Graphene, h-BN, TMDs); 2D heterostructures; ultra-thin materials based high-performance optoelectronic devices; wearable, bio-compatible and flexible electronics; organic-inorganic interfaces
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Special Issue Information

Dear Colleagues,

Two-dimensional (2D) materials have broad application prospects in nanoelectronics, photoelectronics, catalysis, and sensing because they exhibit the characteristics of atomic-thickness crystals. Depending on the crystal structure, 2D materials can be divided into two types: layered materials and non-layered materials. Two-dimensional monolayered materials have excellent physical and chemical properties and potential application values in the fields of catalysis, field effect tubes, optoelectronic devices, spintronic devices, etc., representing a research hotspot in many fields, such as physics, chemistry, materials, and electronics.

This Special Issue aims to collect original research articles or comprehensive review articles covering the most recent progress and new developments of 2D monolayer nanomaterials, including monolayer graphene, molybdenum disulfide (MoS2), hexagonal boron nitride, and phosphorene. Original papers in various formats, including full papers, communications, and reviews related to excellent properties; synthesis strategies; as well as applications of 2D monolayered materials can be discussed in this Special Issue.

We look forward to receiving your contributions.

Dr. Guigen Wang
Prof. Dr. Zheng Liu
Guest Editors

Manuscript Submission Information

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Keywords

  • two-dimensional monolayered materials
  • monolayer graphene
  • molybdenum disulfide
  • hexagonal boron nitride
  • phosphorene
  • electronic properties
  • chemical vapor deposition
  • first principles calculations

Published Papers (4 papers)

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Research

18 pages, 5439 KiB  
Article
Asymmetric and Flexible Ag-MXene/ANFs Composite Papers for Electromagnetic Shielding and Thermal Management
by Xiaoai Ye, Xu Zhang, Xinsheng Zhou and Guigen Wang
Nanomaterials 2023, 13(18), 2608; https://doi.org/10.3390/nano13182608 - 21 Sep 2023
Viewed by 1028
Abstract
Lightweight, flexible, and electrically conductive thin films with high electromagnetic interference (EMI) shielding effectiveness and excellent thermal management capability are ideal for portable and flexible electronic devices. Herein, the asymmetric and multilayered structure Ag-MXene/ANFs composite papers (AMAGM) were fabricated based on Ag-MXene hybrids [...] Read more.
Lightweight, flexible, and electrically conductive thin films with high electromagnetic interference (EMI) shielding effectiveness and excellent thermal management capability are ideal for portable and flexible electronic devices. Herein, the asymmetric and multilayered structure Ag-MXene/ANFs composite papers (AMAGM) were fabricated based on Ag-MXene hybrids and aramid nanofibers (ANFs) via a self-reduction and alternating vacuum-assisted filtration process. The resultant AMAGM composite papers exhibit high electrical conductivity of 248,120 S m−1, excellent mechanical properties with tensile strength of 124.21 MPa and fracture strain of 4.98%, superior EMI shielding effectiveness (62 dB), ultra-high EMI SE/t (11,923 dB cm2 g−1) and outstanding EMI SE reliability as high as 96.1% even after 5000 cycles of bending deformation benefiting from the unique structure and the 3D network at a thickness of 34 μm. Asymmetric structures play an important role in regulating reflection and absorption of electromagnetic waves. In addition, the multifunctional nanocomposite papers reveal outstanding thermal management performances such as ultrafast thermal response, high heating temperatures at low operation voltage, and high heating stability. The results indicate that the AMAGM composite papers have excellent potential for high-integration electromagnetic shielding, wearable electronics, artificial intelligence, and high-performance heating devices. Full article
(This article belongs to the Special Issue Recent Advances in Two-Dimensional Monolayer Nanomaterials)
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13 pages, 3540 KiB  
Article
Thermal Conductivity of 3C/4H-SiC Nanowires by Molecular Dynamics Simulation
by Kaili Yin, Liping Shi, Xiaoliang Ma, Yesheng Zhong, Mingwei Li and Xiaodong He
Nanomaterials 2023, 13(15), 2196; https://doi.org/10.3390/nano13152196 - 28 Jul 2023
Cited by 2 | Viewed by 1154
Abstract
Silicon carbide (SiC) is a promising material for thermoelectric power generation. The characterization of thermal transport properties is essential to understanding their applications in thermoelectric devices. The existence of stacking faults, which originate from the “wrong” stacking sequences of Si–C bilayers, is a [...] Read more.
Silicon carbide (SiC) is a promising material for thermoelectric power generation. The characterization of thermal transport properties is essential to understanding their applications in thermoelectric devices. The existence of stacking faults, which originate from the “wrong” stacking sequences of Si–C bilayers, is a general feature of SiC. However, the effects of stacking faults on the thermal properties of SiC are not well understood. In this study, we evaluated the accuracy of Tersoff, MEAM, and GW potentials in describing the thermal transport of SiC. Additionally, the thermal conductivity of 3C/4H-SiC nanowires was investigated using non-equilibrium molecular dynamics simulations (NEMD). Our results show that thermal conductivity exhibits an increase and then saturation as the total lengths of the 3C/4H-SiC nanowires vary from 23.9 nm to 95.6 nm, showing the size effect of molecular dynamics simulations of the thermal conductivity. There is a minimum thermal conductivity, as a function of uniform period length, of the 3C/4H-SiC nanowires. However, the thermal conductivities of nanowires weakly depend on the gradient period lengths and the ratio of 3C/4H. Additionally, the thermal conductivity of 3C/4H-SiC nanowires decreases continuously from compressive strain to tensile strain. The reduction in thermal conductivity suggests that 3C/4H-SiC nanowires have potential applications in advanced thermoelectric devices. Our study provides insights into the thermal transport properties of SiC nanowires and can guide the development of SiC-based thermoelectric materials. Full article
(This article belongs to the Special Issue Recent Advances in Two-Dimensional Monolayer Nanomaterials)
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13 pages, 4408 KiB  
Article
Morphology and Microwave-Absorbing Performances of Rubber Blends with Multi-Walled Carbon Nanotubes and Molybdenum Disulfide
by Le Huang, Jingru Chen, Bingjun Liu, Pengfei Zhao, Lusheng Liao, Jinlong Tao, Yueqiong Wang, Bingbing Wang, Jing Deng and Yanfang Zhao
Nanomaterials 2023, 13(10), 1644; https://doi.org/10.3390/nano13101644 - 15 May 2023
Cited by 1 | Viewed by 986
Abstract
This study details microwave-absorbing materials made of natural rubber/nitrile butadiene rubber (NR/NBR) blends with multi-walled carbon nanotubes (MWCNTs) and molybdenum disulfide (MoS2). The mechanical blending method and the influences of fabrication on the morphology and microwave-absorbing performance of resulting compounds were [...] Read more.
This study details microwave-absorbing materials made of natural rubber/nitrile butadiene rubber (NR/NBR) blends with multi-walled carbon nanotubes (MWCNTs) and molybdenum disulfide (MoS2). The mechanical blending method and the influences of fabrication on the morphology and microwave-absorbing performance of resulting compounds were logically investigated. It was found that interfacial differences between the fillers and matrix promote the formation of MWCNTs and MoS2 networks in NR/NBR blends, thus improving microwave-absorbing performance. Compared with direct compounding, masterbatch-based two-step blending is more conducive to forming interpenetrating networks of MWCNTs/MoS2, endowing the resulting composite with better microwave attenuation capacity. Composites with MWCNTs in NR and MoS2 in NBR demonstrate the best microwave-absorbing performance, with a minimum reflection loss of −44.54 dB and an effective absorption bandwidth of 3.60 GHz. Exploring the relationship between morphology and electromagnetic loss behavior denotes that such improvement results from the selective distribution of dual fillers, inducing networking and multi-component-derived interfacial polarization enhancement. Full article
(This article belongs to the Special Issue Recent Advances in Two-Dimensional Monolayer Nanomaterials)
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11 pages, 2670 KiB  
Article
A Physical Model to Describe the Motion Behavior of BNNSs under Nanosecond Pulses
by Liang Zhao, Lin Zhou and Lin Yi Jin
Nanomaterials 2023, 13(7), 1278; https://doi.org/10.3390/nano13071278 - 04 Apr 2023
Viewed by 884
Abstract
This paper presents a physical model that provides a comprehensive understanding of the motion behavior of boron nitride nanosheets (BNNSs) immersed in ultrapure deionized water and subjected to a series of nanosecond pulses. In a study conducted by Y. Mi et al. The [...] Read more.
This paper presents a physical model that provides a comprehensive understanding of the motion behavior of boron nitride nanosheets (BNNSs) immersed in ultrapure deionized water and subjected to a series of nanosecond pulses. In a study conducted by Y. Mi et al. The authors explored the global alignment behavior of BNNSs and fitted the experimental data with an exponential decay function. However, this function lacks clear physical mechanisms and the significance of the fitting parameters remains unclear. To address this issue, we have developed a kinetic model that explicitly describes the underlying physical mechanisms. Furthermore, we propose a simplified mathematical model that not only predicts the displacement of BNNSs but also estimates the total time, velocity, and acceleration of the motion process. Full article
(This article belongs to the Special Issue Recent Advances in Two-Dimensional Monolayer Nanomaterials)
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