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Liu X, Tian K, Chen Z, Zhang C, Wang J, Zhu J, Sun S, Xu L. Synthesis of NiCo-BNSA/RGO/MDCF with three-dimensional porous network structure as an excellent microwave absorber. J Colloid Interface Sci 2023; 650:396-406. [PMID: 37418890 DOI: 10.1016/j.jcis.2023.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/28/2023] [Accepted: 07/02/2023] [Indexed: 07/09/2023]
Abstract
Melamine-derived carbon foam (MDCF) and nickel-cobalt bimetallic nanosheet arrays (NiCo-BNSA) possess unique porous structures and excellent microwave absorption (MA) properties, making them potentially useful in MA applications. In this investigation, we fabricated NiCo-BNSA/reduced graphene oxide/MDCF (NiCo-BNSA/RGO/MDCF) composites utilizing a two-stage synthesis protocol. This process incorporated melamine foam (MF) pretreatment, carbonization, and a subsequent in-situ growth stage, resulting in the creation of a three-dimensional porous network structure. By adjusting the RGO volume, we were able to manipulate the structure and composition of the NiCo-BNSA/RGO/MDCF composites, leading to an enhancement in their MA performance. It was also observed that the NiCo-BNSA was evenly distributed on the surface of both the RGO and MDCF. The composites exhibited an optimal reflection loss (RLmin) of -67.8 dB at a thickness of 2.50 mm, and by varying their thickness, the effective absorption bandwidth (EAB, RL ≤ -10 dB) extended to 9.80 GHz, encompassing the entire C and X bands. This study presents a novel approach for fabricating lightweight and efficient carbon-based MA composites.
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Affiliation(s)
- Xiaowei Liu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Konghu Tian
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China; Analysis and Test Center, Anhui University of Science and Technology, Huainan 232001, China; Pinghu Institute of Advanced Materials, Zhejiang University of Technology, Pinghu 314200, China.
| | - Zhihong Chen
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Chao Zhang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China.
| | - Jing Wang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China; Pinghu Institute of Advanced Materials, Zhejiang University of Technology, Pinghu 314200, China
| | - Jinbo Zhu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China.
| | - Sheng Sun
- Pinghu Institute of Advanced Materials, Zhejiang University of Technology, Pinghu 314200, China
| | - Lixin Xu
- Pinghu Institute of Advanced Materials, Zhejiang University of Technology, Pinghu 314200, China
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He F, Zhao W, Cao L, Liu Z, Sun L, Zhang Z, Zhang H, Qi T. The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen-Doped Reduced Graphene Oxide for Microwave Absorption Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205644. [PMID: 37078836 DOI: 10.1002/smll.202205644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 03/26/2023] [Indexed: 05/03/2023]
Abstract
Nanocomposites with hierarchical pore structure hold great potentials for applications in the field of microwave-absorbing materials because of their lightweight and high-efficiency absorption properties. Herein, M-type barium ferrite (BaM) with ordered mesoporous structure (M-BaM) is prepared via a sol-gel process enhanced by mixed anionic and cationic surfactants. The surface area of M-BaM is enhanced almost ten times compared with BaM together with 40% reflection loss enhancing. Then M-BaM compounded with nitrogen-doped reduced graphene oxide (MBG) is synthesized via hydrothermal reaction in which the reduction and nitrogen doping of graphene oxide (GO) in situ occur simultaneously. Interestingly, the mesoporous structure is able to provide opportunity for reductant to enter the bulk M-BaM reducing its Fe3+ to Fe2+ and further forms Fe3 O4 . It requires an optimal balance among the remained mesopores in MBG, formed Fe3 O4 , and CN in nitrogen-doped graphene (N-RGO) for optimizing impedance matching and greatly increasing multiple reflections/interfacial polarization. MBG-2 (GO:M-BaM = 1:10) achieves the minimum reflection loss of -62.6 dB with an effective bandwidth of 4.2 GHz at an ultra-thin thickness of 1.4 mm. In addition, the marriage of mesoporous structure of M-BaM and light mass of graphene reduces the density of MBG.
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Affiliation(s)
- Fuling He
- School of Rare Earths, University of Science and Technology of China, Hefei, 230026, P. R. China
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Wei Zhao
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lei Cao
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhifu Liu
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
| | - Linquan Sun
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhiyu Zhang
- School of Rare Earths, University of Science and Technology of China, Hefei, 230026, P. R. China
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hui Zhang
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
| | - Tao Qi
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, P. R. China
- National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Geng H, Guo Y, Zhang X, Zhang Y, Wang X, Zhao P, Wang G, Liao J, Dong L. Combination strategy of large interlayer spacing and active basal planes for regulating the microwave absorption performance of MoS 2/MWCNT composites at thin absorber level. J Colloid Interface Sci 2023; 648:12-24. [PMID: 37295364 DOI: 10.1016/j.jcis.2023.05.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/25/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Recently, molybdenum disulfide (MoS2)/carbon has become a promising candidate for efficient microwave absorption. However, it is still challenging to simultaneously optimize the synergy of impedance matching and loss capability at the level of a thin absorber. Here, a new adjustment strategy is proposed by changing the concentration of precursor l-cysteine for MoS2/multi-walled carbon nanotubes (MWCNT) composites to unlock the basal plane of MoS2 and expand the interlayer spacing from 0.62 nm to 0.99 nm, leading to improved packing of MoS2 nanosheets and more active sites. Therefore, the tailored MoS2 nanosheets exhibit abundant sulfur-vacancies, lattice-oxygen, more metallic 1T-phase, and higher surface area. Such sulfur-vacancies and lattice-oxygen promote the electronic asymmetric distribution at the solid-air interface of MoS2 crystals and induce stronger microwave attenuation through interface/dipole polarization, which is further verified by first-principles calculations. In addition, the expansion of the interlayer spacing induces more MoS2 to deposit on the MWCNT surface and increases the roughness, improving the impedance matching and multiple scattering. Overall, the advantage of this adjustment method is that while optimizing impedance matching at the thin absorber level, composite still maintains a high attenuation capacity, which means enhancing the attenuation performance of MoS2 itself offsets the weakening of the composite's attenuation ability caused by the decrease in the relative content of MWCNT components. Most importantly, adjusting impedance matching and attenuation ability can be easily implemented by separate control of l-cysteine content. As a result, the MoS2/MWCNT composites achieve a minimum reflection loss value of -49.38 dB and an effective absorption bandwidth of 4.64 GHz at a thickness of only 1.7 mm. This work provides a new vision for the fabrication of thin MoS2-carbon absorbers.
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Affiliation(s)
- Haoran Geng
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China
| | - Yi Guo
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China
| | - Xuan Zhang
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China
| | - Yang Zhang
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China
| | - Xuelin Wang
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China
| | - Pengfei Zhao
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China
| | - Guizhen Wang
- School of Materials Science and Engineering, Hainan University, Haikou 570208, China
| | - Jianhe Liao
- School of Materials Science and Engineering, Hainan University, Haikou 570208, China
| | - Lijie Dong
- Hainan Institute, Wuhan University of Technology, Sanya 572000, China.
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Construction of Dual-Shell Mo 2C/C Microsphere towards Efficient Electromagnetic Wave Absorption. Int J Mol Sci 2022; 23:ijms232314502. [PMID: 36498829 PMCID: PMC9738143 DOI: 10.3390/ijms232314502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/14/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
Carbon-based carbides have attracted tremendous attention for electromagnetic energy attenuation due to their adjustable dielectric properties, oxidation resistance, and good chemical stability. Herein, we reasonably regulate the growth of dopamine hydrochloride on the surface of the Mo-glycerate (Mo-GL) microsphere and then transform the resultant Mo-polydopamine (Mo-PD) microsphere into a dual-shell Mo2C/C (DS-Mo2C/C) microsphere in a high-temperature pyrolysis process under an inert atmosphere. It is found that the pyrolysis temperature plays an important role in the graphitization degree of the carbon matrix and internal architecture. The fabrication of a dual-shell structure can be propitious to the optimization of impedance matching, and the introduction of Mo2C nanoparticles also prompts the accumulation of polarization loss. When the pyrolysis temperature reaches 800 °C, the optimized composite of DS-Mo2C/C-800 exhibits good EM absorption performance in the frequency range of 2.0-18.0 GHz. DS-Mo2C/C-800's qualified bandwidth can reach 4.4 GHz at a matching thickness of 1.5 mm, and the integrated qualified bandwidth (QBW) even exceeds 14.5 GHz with a thickness range of 1.5-5.0 mm. The positive effects of the dual-shell structure and Mo2C nanoparticles on EM energy attenuation may render the DS-Mo2C/C microsphere as a promising candidate for lightweight and broad bandwidth EM absorption materials in the future.
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Di J, Duan Y, Pang H, Jia H, Liu X. Two-Dimensional Basalt/Ni Microflakes with Uniform and Compact Nanolayers for Optimized Microwave Absorption Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51545-51554. [PMID: 36318616 DOI: 10.1021/acsami.2c15916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
It has been accepted that the uniform distribution of magnetic metal particles is beneficial to microwave absorption, while why the homogeneous magnetic particles on the dielectric substrate improve the electromagnetic loss is still unclear. Herein, metal Ni nanoparticles, two-dimensional (2D) basalt/scattered Ni, and basalt/uniform Ni microflakes are obtained through a pretreatment and electroless deposition process. In comparison to Ni nanoparticles and basalt/scattered Ni, the basalt/Ni microflakes with largely uniform and compact Ni nanolayers on basalt, breaking the percolation limit, are favorable for enhanced electromagnetic attenuation. The Ni nanolayers are convenient for construction of a microscale conductive net and migration of an electron. The 2D heterostructures constructed by basalt substrates and decorated Ni layers boost multiple scattering absorption and promote interfacial polarization. Meanwhile, exposed Ni does not inhibit magnetic resonance, enabling strong magnetic coupling. Consequently, the basalt/Ni microflakes with uniform Ni nanolayers demonstrate better microwave absorption with a minimum reflection loss of -30 dB and an effective absorption bandwidth of 3 GHz at 1 mm. This work shows that the uniform and compact magnetic metal nanolayers are effective in improving the dielectric loss and magnetic loss simultaneously to achieve the high-performance microwave absorption.
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Affiliation(s)
- Jingru Di
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116085, People's Republic of China
| | - Yuping Duan
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116085, People's Republic of China
| | - Huifang Pang
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116085, People's Republic of China
| | - Hanxiao Jia
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116085, People's Republic of China
| | - Xiaoji Liu
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116085, People's Republic of China
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Yang Z, You W, Xiong X, Zhang R, Wu Z, Zhao B, Wang M, Liu X, Zhang X, Che R. Morphology-Evolved Succulent-like FeCo Microarchitectures with Magnetic Configuration Regulation for Enhanced Microwave Absorption. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32369-32378. [PMID: 35816054 DOI: 10.1021/acsami.2c06767] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The regulation of magnetic configuration through diverse morphologies to achieve a rapid magnetic response has attracted considerable academic favor on account of the unique application prospects in various fields. Herein, porous FeCo alloys with morphology evolved from spheres to succulent-like microstructures are successfully constructed via a facile hydrothermal reaction-hydrogen reduction synthetic strategy. A multiple balance/competition mechanism is proposed, including the coexistence of the dissolution-precipitation balance of hydroxides and the dissociation-stability balance of coordination compounds, the Fe3+-Co2+ competition, and the precipitation-coordination reaction contest. As the morphology evolves to a succulent-like assembly, the multidomain features with a stable combination of vortex states and the violent motion of magnetic vectors contribute to the improvement of magnetic storage capacity and loss capability, which are evidenced by the off-axis electron holography and micromagnetic simulation. Consequently, the succulent-like FeCo exhibits enhanced permeability and microwave absorption performance. The effective absorption bandwidth reaches 5.68 GHz, and the maximum reflection loss is elevated to -53.81 dB. This work sheds considerable insight into the microstructure regulation with an application in microwave absorption and offers guidance in research for the topological magnetic configuration and dynamic response mechanism of magnetic alloys.
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Affiliation(s)
- Ziqi Yang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Wenbin You
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Xuhui Xiong
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Ruixuan Zhang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Zhengchen Wu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Biao Zhao
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Min Wang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
| | - Xianhu Liu
- Key Laboratory of Materials Processing and Mold, Zhengzhou University, Ministry of Education, Zhengzhou 450002, P. R. China
| | - Xuefeng Zhang
- Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310012, P. R. China
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Department of Materials Science, Fudan University, Shanghai 200438, P. R. China
- Joint-Research Center for Computational Materials, Zhejiang Laboratory, Hangzhou 311100, China
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Nan Y, Zhang Z, Wang Z, Yuan H, Zhou Y, Wei J. Controllable Synthesis of Mo 3C 2 Encapsulated by N-Doped Carbon Microspheres to Achieve Highly Efficient Microwave Absorption at Full Wavebands: From Lemon-like to Fig-like Morphologies. Inorg Chem 2022; 61:6281-6294. [PMID: 35412830 DOI: 10.1021/acs.inorgchem.2c00533] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mo3C2@N-doped carbon microspheres (Mo3C2@NC) have been discovered to be a family of superior microwave absorbing materials. Herein, Mo3C2@NC was synthesized through a simple high-temperature carbonization process by evaporating a graphite anode and Mo wire in Ar and N2 atmospheres with an N-doping content of 6.4 at. %. Attributing to the self-assembly mechanism, the number of Mo wires inserted into the graphite anode determined the morphologies of Mo3C2@NC, which were the unique lemon-like (1- and 2-Mo3C2@NC) and fig-like (3-, 4-, and 5-Mo3C2@NC) microstructures. 1- and 2-Mo3C2@NC exhibited powerful reflection losses (RLs) of -45.60, -45.59, and -47.11 dB at the S, C and X bands, respectively, which corresponded to thinner thicknesses. 3-, 4-, and 5-Mo3C2@NC showed outstanding absorption performance at the C, X, and Ku bands, respectively, with each value of a minimum RL less than -43.00 dB. In particular, the strongest RL (-43.56 dB) for 5-Mo3C2@NC corresponded to an ultrathin thickness of 1.3 mm. In addition, the maximum effective absorption bandwidth was 6.3 GHz for 4-Mo3C2@NC. After analysis, all Mo3C2@NC samples showed well-matched impedance due to the enhanced dielectric loss caused by the unique carbon structure and moderate magnetic loss derived from the weak magnetic property of Mo3C2. More importantly, the unique lemon-like and fig-like microstructures created sufficient interfaces and differentiated multiple reflection paths, which greatly contributed to the strong microwave absorptions at full wavebands. In full consideration of the simple preparation method and tunable absorption properties, Mo3C2@NC composites can be regarded as excellent electromagnetic wave absorption materials.
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Affiliation(s)
- Yanli Nan
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Nano Materials and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Zihan Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Nano Materials and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Zhaoyu Wang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Nano Materials and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Hudie Yuan
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Nano Materials and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yun Zhou
- School of Medical Information and Engineering, Southwest Medical University, Lu Zhou 646000, China
| | - Jian Wei
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Nano Materials and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
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Geng H, Zhang X, Xie W, Zhao P, Wang G, Liao J, Dong L. Lightweight and broadband 2D MoS 2 nanosheets/3D carbon nanofibers hybrid aerogel for high-efficiency microwave absorption. J Colloid Interface Sci 2021; 609:33-42. [PMID: 34894554 DOI: 10.1016/j.jcis.2021.11.192] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 12/22/2022]
Abstract
Three-dimensional (3D) porous molybdenum disulfide nanosheets/carbon nanofibers (MoS2/CNF) hybrid aerogels were synthesized by using solvothermal method and following carbonization, where two-dimensional (2D) MoS2 nanosheets were homogenously in-situ grown on the interconnected CNF skeleton derived from bacterial cellulose, forming a hierarchical porous structure. This unique heterogeneous structure of the MoS2/CNF hybrid aerogels were conducive to electromagnetic loss, including conduction, polarization, multi-scatterings, and reflections, thus resulting in a balanced impedance matching and microwave attenuation capacity. It was found that the resulted MoS2/CNF hybrid aerogels demonstrate excellent microwave absorbing performance when the only 5.0 wt% fillers were loaded in paraffin. Particularly, MoS2/CNF-2-900 hybrid aerogel displayed an effective absorption bandwidth of 5.68 GHz and minimum reflection loss (RLmin) value of -36.19 dB at a thickness of 2.0 mm. As the thickness increases to 4.4 mm, the RLmin value of MoS2/CNF-2-900 hybrid aerogel reaches -48.53 dB. Electromagnetic loss mechanism analysis indicates that such improved microwave attenuation is attributed to proper component, multiple heterogenous interface and hierarchical porous structures. All the results in this work pave the avenue for the development of ultralight microwave absorber with high absorption capacity as well as broad effective absorption bandwidth.
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Affiliation(s)
- Haoran Geng
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
| | - Xuan Zhang
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
| | - Wenhan Xie
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
| | - Pengfei Zhao
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Renmin Avenue 48, Zhanjiang 524001, China
| | - Guizhen Wang
- School of Materials Science and Engineering, Hainan University, Renmin Avenue 58, Haikou 570208, China
| | - Jianhe Liao
- School of Materials Science and Engineering, Hainan University, Renmin Avenue 58, Haikou 570208, China
| | - Lijie Dong
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China.
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Chen J, Zheng J, Huang Q, Wang F, Ji G. Enhanced Microwave Absorbing Ability of Carbon Fibers with Embedded FeCo/CoFe 2O 4 Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36182-36189. [PMID: 34291899 DOI: 10.1021/acsami.1c09430] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the face of increasingly severe electromagnetic (EM) wave pollution, the research of EM wave absorbing materials is an effective solution. To reduce the density of traditional absorbing materials, in this work, FeCo/CoFe2O4/carbon nanofiber composites were successfully prepared by electrospinning for the EM wave attenuation application. Benefiting from the loss ability of interface polarization, dipole polarization, and magnetic loss, the composites obtained a bandwidth of 5.0 GHz at a 1.95 mm thickness and an absorption peak of -52.3 dB. More importantly, the radar cross section (RCS) reduction of composite coatings calculated by ANSYS Electronics Desktop 2018 (HFSS) can reach 34.5 dBm2, and the RCS value is almost less than -10 dBm2 when the incident angle is greater than 20°, demonstrating great scattering ability of the material coating to EM waves. This work, combined with the exploration of the mechanism and the simulation analysis of the absorbing coating, will be of significance for the development of absorbing materials.
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Affiliation(s)
- Jiabin Chen
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Jing Zheng
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Qianqian Huang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Fan Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Guangbin Ji
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
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Zhang X, Wang J, Fan Y, Ren H, Liu Z, Wang Y, Liu Y, Bai H, Kong L. NiCo alloy/C nanocomposites derived from a Ni-doped ZIF-67 for lightweight microwave absorbers. NANOTECHNOLOGY 2021; 32:385602. [PMID: 34116524 DOI: 10.1088/1361-6528/ac0ac3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/11/2021] [Indexed: 06/12/2023]
Abstract
In this work, we prepared NiCo alloy/C with rhombic dodecahedron structure and superior microwave absorption performance by using ZIF-67 as the raw material. The rhombic dodecahedron NiCo alloy/C was with rough particles on the surface was photographed by field emission scanning electron microscopy. By adjusting the doping amount of Ni and the temperature of pyrolysis, improved the impedance matching of NiCo alloy/C. Specifically, NiCo alloy/C exhibits a minimum reflection loss of -65.48 dB at 13.48 GHz, while the thickness is 1.63 mm. Defects introduced in the Ni doping process and the special rhombic dodecahedral structure can cause multiple loss mechanisms. Therefore, this NiCo alloy/C composite has the potential to be a potential microwave absorber material with lightweight and high microwave absorption properties.
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Affiliation(s)
- Ximing Zhang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Jingyu Wang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Yang Fan
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Hengdong Ren
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Zhenying Liu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Yanfen Wang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Yin Liu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
- Anhui International Joint Research Center for Nano Carbon- based Materials and Environmental Health, Anhui University of Science and Technology, Huainan 232001, Anhui, People's Republic of China
| | - Hongcun Bai
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, Ningxia, People's Republic of China
| | - Lingbing Kong
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, Guangdong, People's Republic of China
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Kuang D, Wang S, Hou L, Luo H, Deng L, Chen C, Song M, Mead JL, Huang H. A comparative study on the dielectric response and microwave absorption performance of FeNi-capped carbon nanotubes and FeNi-cored carbon nanoparticles. NANOTECHNOLOGY 2020; 32:105701. [PMID: 33126231 DOI: 10.1088/1361-6528/abc644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
The mechanisms responsible for the dielectric response of C-based microwave absorbers remain a long-standing theoretical question. Uncovering these mechanisms is critical to enhance their microwave absorption performance. To determine how different C forms alter the dielectric response of C-based absorbers, FeNi-capped carbon nanotubes (FeNi-CNTs) and FeNi-cored carbon nanoparticles (FeNi-CNPs) are synthesized, and a comparative study of their dielectric responses is then carried out in this study. The as-synthesized FeNi-CNTs and FeNi-CNPs have similar magnetic properties and complex permeabilities, but differ in complex permittivities. It is shown that FeNi-CNTs have a much stronger dielectric loss than FeNi-CNPs. At a thickness of 2.8 mm, a low optimal reflection loss of -32.2 dB and a broad effective absorption bandwidth of 8.0 GHz are achieved for FeNi-CNTs. Meanwhile, equivalent circuit models reveal that the CNT network of the FeNi-CNTs could introduce an electrical inductance that can effectively improve its dielectric loss capability. This study demonstrates that designing a composite with a tailored C form and composition is a successful strategy for tuning its microwave absorption performance. Furthermore, the equivalent circuit modeling is an effective tool for analyzing the dielectric response of the microwave absorbers, as is expected to be applicable for other metal-C composites.
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Affiliation(s)
- Daitao Kuang
- School of Physics and Electronics, Central South University, Changsha, 410083, People's Republic of China
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, People's Republic of China
| | - Shiliang Wang
- School of Physics and Electronics, Central South University, Changsha, 410083, People's Republic of China
| | - Lizhen Hou
- School of Physics and Electronics, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Heng Luo
- School of Physics and Electronics, Central South University, Changsha, 410083, People's Republic of China
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, People's Republic of China
| | - Lianwen Deng
- School of Physics and Electronics, Central South University, Changsha, 410083, People's Republic of China
| | - Chuansheng Chen
- College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Min Song
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, People's Republic of China
| | - James L Mead
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Han Huang
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
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12
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Li Q, Zhao Y, Li X, Wang L, Li X, Zhang J, Che R. MOF Induces 2D GO to Assemble into 3D Accordion-Like Composites for Tunable and Optimized Microwave Absorption Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003905. [PMID: 32996264 DOI: 10.1002/smll.202003905] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/04/2020] [Indexed: 05/28/2023]
Abstract
Three-dimensional (3D) materials assembled by 2D layered lamella can provide abundant interfaces which are greatly advantageous for high-performance microwave absorbers. Herein, accordion-like CeO2- x /reduced graphene oxide (CeO2- x /RGO) hybrid materials can be successfully synthesized by a solvothermal and hydrothermal method, which are composed of laminated RGO sheets and confined CeO2- x nanoparticles (NPs). The multilayer structure is attributed to the process of Ce-MOF dissolving into NPs, then the NPs combining with graphene oxide (GO) to induce the 2D GO assembled into 3D accordion-like composites. The 3D accordion-like CeO2- x /RGO simultaneously utilizes the insulated CeO2- x and highly conductive RGO to assemble into the laminated structure with moderate electromagnetic parameters. The 3D-laminated lightweight CeO2- x /RGO composite exhibits excellent attenuation ability of an ultrabroad bandwidth (5.84 GHz) and a maximum reflection loss (-50.6 dB) which can be ascribed from the glorious impedance matching, synergistic effect between RGO sheets and the embedded CeO2- x NPs. An off-axis electron holography is carried out to visualize the spatial electrical potential and charge distribution around the CeO2- x /RGO heterojunction, which clarifies the dipole polarization and interfacial polarization. This work enlightens a simple strategy to fabricate an excellent 3D laminated RGO-based microwave absorber.
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Affiliation(s)
- Qingqing Li
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Yunhao Zhao
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Xiaohui Li
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Lei Wang
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Xiao Li
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Jie Zhang
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
| | - Renchao Che
- Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai, 200433, P. R. China
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13
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Yang PA, Ruan H, Sun Y, Li R, Lu Y, Xiang C. Excellent microwave absorption performances of high length-diameter ratio iron nanowires with low filling ratio. NANOTECHNOLOGY 2020; 31:395708. [PMID: 32544893 DOI: 10.1088/1361-6528/ab9d41] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Reducing the filling content of high-density ferromagnetic particles is a key prerequisite for obtaining lightweight absorbers. To this end, large iron nanowires (Fe NWs) with high length-diameters, uniform length of approximately 21 μm and diameters of approximately 60 nm were synthesized through a facile magnetic field-induced in situ reduction method without templates and surfactants. The phase structures, and micromorphology of the high-aspect-ratio Fe NWs were analyzed, and the electromagnetic properties of Fe NWs-paraffin composites were measured with a vector network analyzer at 2-18 GHz. The Fe NWs-paraffin composite with a low filler loading also exhibited satisfactory microwave absorption performance, and the composites filled with 20 wt.% of as-prepared Fe NWs shows a minimum reflection loss (RLmin) of -44.67 dB at 2.72 GHz and effective absorption bandwidth (EAB) with reflection loss below -10 dB reached 8.56 GHz at a layer thickness of 1.42 mm. At a thickness of 3 mm, the RLmin value and EAB (RL ⩽ -10 dB) reached -29.74 dB and 3.28 GHz (3.84-7.12 GHz), respectively. This study suggests that Fe NWs with high-aspect-ratios have promising microwave absorbing applications, and provides a good reference for the preparation of ferromagnetic metal-based lightweight electromagnetic wave-absorbing materials.
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Affiliation(s)
- Ping-An Yang
- Key Laboratory of Industrial Internet of Things and Networked Control, Ministry of Education, School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, People's Republic of China
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14
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Guan ZJ, Jiang JT, Yan SJ, Sun YM, Zhen L. Sandwich-like cobalt/reduced graphene oxide/cobalt composite structure presenting synergetic electromagnetic loss effect. J Colloid Interface Sci 2020; 561:687-695. [DOI: 10.1016/j.jcis.2019.11.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/08/2019] [Accepted: 11/13/2019] [Indexed: 11/17/2022]
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15
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Wang B, Ruan W, Mu C, Nie A, Wen F, Xiang J, Liu Z. Direct one-step synthesis of CoFe x@Co@C hybrids derived from a metal organic framework for a lightweight and high-performance microwave absorber. NANOTECHNOLOGY 2020; 31:095703. [PMID: 31711048 DOI: 10.1088/1361-6528/ab5620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
It involves invariably strong expectations and a tough challenge to explore lightweight microwave absorption materials with high efficiency and agile tenability. Here, we successfully synthesized CoFex@Co nanoparticles embedded into a carbon matrix that was directly derived from the metal organic frameworks (MOFs) via a facile method. Benefiting from the unique multi-dimensional construction and synergistic effects of carbon material with magnetic nanoparticles in both the electromagnetic energy loss and impedance matching, CoFe0.26@Co@C composite exhibited excellent microwave absorption performance, which showed a minimum reflection loss of -62.5 dB at the thickness of 1.5 mm and a broad absorption bandwidth of 14.7 GHz exceeding -10 dB at the thickness range of 1.4 to 5 mm. This study not only provides a reference for future preparation of MOF-based lightweight microwave absorption materials, but also offers the possible application owing to its simple procedure and outstanding absorption properties.
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Affiliation(s)
- Bochong Wang
- State Key Laboratory of Metastable Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, Yanshan University, Qinhuangdao 066004, People's Republic of China
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16
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Zhang X, Xu J, Yuan H, Zhang S, Ouyang Q, Zhu C, Zhang X, Chen Y. Large-Scale Synthesis of Three-Dimensional Reduced Graphene Oxide/Nitrogen-Doped Carbon Nanotube Heteronanostructures as Highly Efficient Electromagnetic Wave Absorbing Materials. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39100-39108. [PMID: 31571475 DOI: 10.1021/acsami.9b13751] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein, we use reduced graphene oxide as a substrate and NiFe as a catalyst to fabricate three-dimensional (3D) nitrogen-doped carbon nanotube (NCNT)/reduced graphene oxide heteronanostructures (3D NiFe/N-GCTs). The 3D NiFe/N-GCTs are composed of two-dimensional (2D) reduced graphene oxide-supported one-dimensional (1D) NiFe nanoparticle-encapsulated NCNT arrays. The NCNTs exhibit bamboo-like shapes with the length and diameter of 3-10 μm and 15-45 nm, respectively. Besides integration of advantages of 1D and 2D nanomaterials, the 3D NiFe/N-GCT heteronanostructure possesses interconnected network structures, sufficient interfaces, numerous defects, hundreds of void spaces enclosed by bamboo joints and the walls of the NCNT in an individual carbon nanotube, and large surface areas, which can improve their dielectric losses toward electromagnetic wave. Thus, the 3D NiFe/N-GCTs show satisfied property toward electromagnetic wave absorption. Typically, the optimized 3D NiFe/N-GCT displays excellent minimal reflection loss (-40.3 dB) and outstanding efficient absorption bandwidth (4.5 GHz), outperforming most of the reported absorbers. Remarkably, the synthesis of 3D NiFe/N-GCTs only involves vacuum freeze-drying and subsequent thermal treatment process at a high temperature, and thus, the large-scale production of 3D NiFe/N-GCTs can be achieved in each batch, affording the possibility of the practical applications of the 3D NiFe/N-GCTs.
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Affiliation(s)
| | | | | | | | | | | | - Xitian Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, and School of Physics and Electronic Engineering , Harbin Normal University , Harbin 150025 , China
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17
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Cheng X, Zhou X, Wang S, Liu Z, Liu Q, Zhang Y, Liu Q, Li B. Fabrication of NiO/NiCo 2O 4 Mixtures as Excellent Microwave Absorbers. NANOSCALE RESEARCH LETTERS 2019; 14:155. [PMID: 31065819 PMCID: PMC6505032 DOI: 10.1186/s11671-019-2988-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
The NiO/NiCo2O4 mixtures with unique yolk-shell structure were synthesized by a simple hydrothermal route and subsequent thermal treatment. The elemental distribution, composition, and microstructure of the samples were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and scanning electron microscope (SEM), respectively. The microwave absorption property was investigated by using vector network analysis (VNA). The results indicated that the excellent electromagnetic wave absorption property of the NiO/NiCo2O4 mixtures was achieved due to the unique yolk-shell structure. In detail, the maximum reflection loss (RL) value of the sample reached up to - 37.0 dB at 12.2 GHz and the absorption bandwidth with RL below - 10 dB was 4.0 GHz with a 2.0-mm-thick absorber. In addition, the NiO/NiCo2O4 mixtures prepared at high temperature, exhibited excellent thermal stability. Possible mechanisms were investigated for improving the microwave absorption properties of the samples.
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Affiliation(s)
- Xiankun Cheng
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Xiangbo Zhou
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Shipeng Wang
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Zhongliang Liu
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Qinzhuang Liu
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Yongxing Zhang
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Qiangchun Liu
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
| | - Bing Li
- School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000 People’s Republic of China
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18
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Zeng S, Feng W, Peng S, Teng Z, Chen C, Zhang H, Peng S. Dual-functional SiOC ceramics coating modified carbon fibers with enhanced microwave absorption performance. RSC Adv 2019; 9:30685-30692. [PMID: 35529384 PMCID: PMC9073367 DOI: 10.1039/c9ra06166e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/20/2019] [Indexed: 11/21/2022] Open
Abstract
Multi-functional carbon fiber (CF) based composites have great potential as new-type microwave absorption materials (MAMs). However, it was still a huge challenge to integrate antioxidation and MA properties into CF based composites. Herein, the SiOC ceramics coating modified carbon fibers (SiOC/CFs) were prepared by a polymer precursor pyrolysis method. The X-ray photoelectron spectroscopy (XPS) revealed that the SiOC coating was composed of SiOC, SiO2, and amorphous carbon phases. The SiOC ceramics as dual-functional coating not only heightened the oxidation temperature from 415 °C to 890 °C, but also highly improved the microwave absorbing ability from −12.60 dB to −47.50 dB. The enhanced MA performance could be attributed to multiple reflections in the cross-linked structure, various polarization relaxation processes, and the favorable impedance matching effect. The SiOC ceramics coating as a semiconductor could suppress the skin effect originating from the cross-linked CF network, thus leading to a favorable impedance matching behavior. The SiOC ceramics coating modified carbon fibers improved anti-oxidation and refine microwave absorption properties.![]()
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Affiliation(s)
- Sifan Zeng
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Wanlin Feng
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Shuyuan Peng
- Department of Product Design
- School of Art & Design
- Dalian Polytechnic University
- Dalian
- China
| | - Zhen Teng
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Chen Chen
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Haibin Zhang
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
| | - Shuming Peng
- Innovation Research Team for Advanced Ceramics
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- China
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19
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Lan D, Qin M, Yang R, Chen S, Wu H, Fan Y, Fu Q, Zhang F. Facile synthesis of hierarchical chrysanthemum-like copper cobaltate-copper oxide composites for enhanced microwave absorption performance. J Colloid Interface Sci 2019; 533:481-491. [DOI: 10.1016/j.jcis.2018.08.108] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 10/28/2022]
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20
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Wang S, Zhao Y, Gao M, Xue H, Xu Y, Feng C, Shi D, Liu K, Jiao Q. Green Synthesis of Porous Cocoon-like rGO for Enhanced Microwave-Absorbing Performances. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42865-42874. [PMID: 30449085 DOI: 10.1021/acsami.8b15416] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel porous cocoon-like reduced graphene oxide (rGO) with high porosity and low density was fabricated by a simple and green reduction reaction using ascorbic acid as the reductant in combination with a freeze-drying process without annealing. The bulk density of porous cocoon-like rGO is only 28.49 mg/cm3, and the porosity reaches 94.57%. The reaction times have an important influence on the formation of porous cocoon-like rGO and the reduction degree of rGO. The porous cocoon-like rGO exhibits an excellent microwave-absorbing property with a low mass filling ratio of 7.0 wt %; its minimum reflection loss (RL) is -29.05 dB at 15.96 GHz with a sample thickness of 2.0 mm and the effective absorption bandwidth (RL < -10 dB) is 5.27 GHz. The microwave-absorbing property of porous cocoon-like rGO is much better than that of GO and other porous rGO. The in-depth analyses of the reduction degree, porosity, and microwave-absorbing performance illustrate that the microwave-absorbing performance of rGO is significantly related to the reduction degree and porosity. In addition, the synthetic route for porous cocoon-like rGO is simple, has low energy consumption, and is environmentally friendly. Our work demonstrates that the porous cocoon-like rGO is a promising lightweight microwave absorber with high performance.
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Affiliation(s)
- Shanshan Wang
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Yun Zhao
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Meimei Gao
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Haoliang Xue
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Yingchun Xu
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Caihong Feng
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Daxin Shi
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, School of Physics , Peking University , Beijing 100871 , China
| | - Qingze Jiao
- School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China
- School of Materials and the Environment , Beijing Institute of Technology , Zhuhai 519085 , P. R. China
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Lu M, Wu Q, Guan XH, Xu W, Zhang HY, Di X, Wang GS, Dong SH. Synthesis and Microwave Absorbing Properties of Porous One-Dimensional Nickel Sulfide Nanostructures. Front Chem 2018; 6:405. [PMID: 30364278 PMCID: PMC6193059 DOI: 10.3389/fchem.2018.00405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 08/20/2018] [Indexed: 11/15/2022] Open
Abstract
One-dimensional (1D) porous NixSy nanostructures have been successfully fabricated by two-step method consisting of solvothermal and subsequent annealing process. The suitable heat treatment temperature and reaction time play crucial roles in the final structure, morphology, as well as performance. The uniform and perfect porous NixSy nanostructures obtained at 310°C exhibit outstanding microwave absorption performances. A minimum reflection loss of -35.6 dB is achieved at 8.5 GHz, and the effective absorption bandwidth almost covers 14.5 GHz with the absorber thickness range of 2.0-5.0 mm. It can be supposed that this porous structure with rough surface which is favor for increasing the microwave multiple reflection and scattering, contributes a high-performance electromagnetic absorption.
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Affiliation(s)
- Min Lu
- School of Chemical Engineering, Northeast Electric Power University, Jilin, China
| | - Qian Wu
- School of Chemical Engineering, Northeast Electric Power University, Jilin, China
| | - Xiao-Hui Guan
- School of Chemical Engineering, Northeast Electric Power University, Jilin, China
| | - Wei Xu
- School of Chemistry, Beihang University, Beijing, China
| | - Hao-Yue Zhang
- School of Chemistry, Beihang University, Beijing, China
| | - Xin Di
- Pipeline Technology Research Center, China University of Petroleum–Beijing, Beijing, China
| | | | - Shao-Hua Dong
- Pipeline Technology Research Center, China University of Petroleum–Beijing, Beijing, China
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Ruan W, Mu C, Wang B, Nie A, Zhang C, Du X, Xiang J, Wen F, Liu Z. Metal-organic framework derived cobalt phosphosulfide with ultrahigh microwave absorption properties. NANOTECHNOLOGY 2018; 29:405703. [PMID: 30010614 DOI: 10.1088/1361-6528/aad39b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanostructure composites of ferromagnetic materials embedded in nanoporous carbon (NC) derived from metal-organic frameworks (MOFs) have attracted enormous attention due to their potential application in many fields, such as microwave absorption, energy storage, and conversion. The rational design of nanocomposites holds a determinant factor for overcoming the challenges involving the microwave absorption performance. Herein, CoS2/NC, CoP/NC, and CoS2-xPx/NC with a rhombic dodecahedral structure have been successfully fabricated by using the template cobalt-based MOFs (ZIF-67). A morphology analysis indicates that ferromagnetic nanoparticles are embedded in NC matrix. It is obvious that the rhombic dodecahedron can be maintained after the phosphorization and sulfurization of Co/NC derived from the thermal decomposition of ZIF-67. The microwave absorption performance can obviously be improved by the phosphorization and sulfurization of Co/NC. CoS2-xPx/NC exhibits an excellent microwave absorption property and the minimum reflection loss (RL) of CoS2-xPx/NC can reach -68 dB at 14.6 GHz with a thickness of 1.5 mm. An RL value less than -10 dB can be achieved in the microwave frequency range of 12.7-17.3 GHz (4.6 GHz) with a thickness of 1.5 mm for CoS2-xPx/NC. This article offers a novel way to fabricate cobalt-based materials/carbon composites for an excellent microwave absorber.
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23
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Singh SK, Akhtar MJ, Kar KK. Hierarchical Carbon Nanotube-Coated Carbon Fiber: Ultra Lightweight, Thin, and Highly Efficient Microwave Absorber. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24816-24828. [PMID: 29973041 DOI: 10.1021/acsami.8b06673] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Strong EM wave absorption and lightweight are the foremost important factors that drive the real-world applications of the modern microwave absorbers. This work mainly deals with the design of highly efficient microwave absorbers, where a hierarchical carbon nanotube (CNT) forest is first grown on the carbon fiber (CF) through the catalytic chemical vapor deposition method. The hierarchical carbon nanotube grown on the carbon fiber (CNTCF) is then embedded in the epoxy matrix to synthesize lightweight nanocomposites for their use as efficient microwave absorbers. The morphological study shows that carbon nanotubes (CNTs) self-assemble to form a trapping center on the carbon fiber. The electromagnetic characteristics of resultant nanocomposites are investigated exclusively in the X-band (8.2-12.4 GHz) using the network analyzer. The synthesized nanocomposites, containing 0.35 and 0.50 wt % CNTCFs, exhibit excellent microwave absorption properties, which could be attributed to the better impedance matching conditions and high dielectric losses. The reflection loss (RL) of -42.0 dB (99.99% absorption) with -10 dB (90% absorption) and -20 dB (99% absorption) bandwidths of 2.7 and 1.16 GHz, respectively, is achieved for 0.35 wt % CNTCF loading at 2.5 mm thickness. The composite with 0.50 wt % CNTCF loading illustrates substantial absorption efficiency with the RL reaching -24.5 dB (99.65% absorption) at 9.8 GHz and -10 dB bandwidth comprising 84.5% of the entire X band. The excellent microwave properties obtained here are primarily due to the electric dipole polarization, interfacial polarization, and unique trapping center. These trapping centers basically induce multiple reflections and scatterings, which attenuate more microwave energy. This investigation opens a new approach for the development of extremely lightweight, small-thickness, and highly efficient microwave absorbers for X-band applications.
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Wang Z, Zhao P, He D, Cheng Y, Liao L, Li S, Luo Y, Peng Z, Li P. Cerium oxide immobilized reduced graphene oxide hybrids with excellent microwave absorbing performance. Phys Chem Chem Phys 2018; 20:14155-14165. [PMID: 29749422 DOI: 10.1039/c8cp00160j] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microwave absorbing materials with high absorption over a broad bandwidth when they have a small thickness are strongly desired due to their widespread applications. Herein, cerium oxide immobilized reduced graphene oxide (CeO2-rGO) hybrids with excellent microwave absorbing performance have been fabricated by a versatile one-step hydrothermal approach. Modern measurement techniques, including X-ray diffraction, Raman spectroscopy, electronic microscopy, X-ray photoelectron spectroscopy and vector network analysis, have been conducted to characterize the chemical composition, microstructure and electromagnetic performance of the as-obtained hybrids. Morphological analysis reveals that the CeO2 nanocrystals are homogeneously immobilized onto the rGO surface without any significant agglomeration. Interestingly, significant enhancement in the microwave absorbing performance has been observed for all the CeO2-rGO hybrids. For example, a CeO2-rGO hybrid with a 10 : 1 mass ratio of CeO2 to GO exhibits a minimum reflection loss (RL) of -45.94 dB, which is 73.35 times and 6.14 times that of the lone CeO2 and rGO, respectively. Moreover, the CeO2-rGO hybrid shows a broadband absorption feature with an effective absorption bandwidth (RL < -10 dB) of 4.5 GHz, and can be exploited for practical application in a frequency range of 3.68-18.00 GHz via tuning of the thickness. Investigation of the structure-property correlation indicates that such enhancements are attributed to conductive loss, polarization loss and multiple reflections which are mainly derived from the unique CeO2-rGO based architecture. In addition, the higher oxygen vacancy concentration of CeO2 in hybrids can promote electron transfer between CeO2 and rGO, leading to microwave attenuation enhancement. It is expected that these CeO2-rGO hybrids can be used as new microwave absorbers.
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Affiliation(s)
- Zhongqi Wang
- Chinese Agricultural Ministry Key Laboratory of Tropical Crop Product Processing, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China.
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Liu Y, Chen Z, Zhang Y, Feng R, Chen X, Xiong C, Dong L. Broadband and Lightweight Microwave Absorber Constructed by in Situ Growth of Hierarchical CoFe 2O 4/Reduced Graphene Oxide Porous Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13860-13868. [PMID: 29589899 DOI: 10.1021/acsami.8b02137] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A broadband and lightweight microwave absorber has attracted soaring research interest because of the increasing demand for electronic reliability and defense security. Lightweight ferrites/graphene porous composites with abundant interfaces are potential high-performance absorbers owing to their balanced attenuation ability and impedance matching. Herein, we synthesized hierarchical CoFe2O4/reduced graphene oxide (CFO/rGO) nanocomposites with a porous structure via an in situ solvothermal method. The electromagnetic parameters of CFO/rGO nanocomposites can be well-adjusted by modulating the weight fraction of rGO. The hierarchical porous structure and proper electromagnetic parameters result in the enhancement of impedance matching and attenuation ability. Benefiting from the controllable composition, hierarchical porous structure, and strong synergetic effect between CFO and rGO sheets, as expected, CFO/rGO nanocomposites exhibit superior microwave absorption performance with an ultrabroad bandwidth reaching 5.8 GHz (8.3-14.1 GHz) with a thin thickness of 2.8 mm. Meanwhile, a strong reflection loss of -57.7 dB at the same thickness is achieved. Considering the outstanding microwave absorption performance, the hierarchical CFO/rGO porous nanocomposites can be employed as a high-performance microwave absorber.
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Affiliation(s)
- Yang Liu
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Zhuo Chen
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Yang Zhang
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Rui Feng
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Xiao Chen
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Chuanxi Xiong
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Lijie Dong
- Center for Smart Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
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26
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Zhou S, Huang Y, Liu X, Yan J, Feng X. Synthesis and Microwave Absorption Enhancement of CoNi@SiO2@C Hierarchical Structures. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00997] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suhua Zhou
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
| | - Ying Huang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
| | - Xudong Liu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
| | - Jing Yan
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
| | - Xuansheng Feng
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
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27
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Yan F, Guo D, Zhang S, Li C, Zhu C, Zhang X, Chen Y. An ultra-small NiFe 2O 4 hollow particle/graphene hybrid: fabrication and electromagnetic wave absorption property. NANOSCALE 2018; 10:2697-2703. [PMID: 29359770 DOI: 10.1039/c7nr08305j] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, ultra-small NiFe2O4 hollow particles, with the diameter and wall thickness of only 6 and 1.8 nm, respectively, were anchored on a graphene surface based on the nanoscale Kirkendall effect. The hybrid exhibits an excellent electromagnetic wave absorption property, comparable or superior to that of most reported absorbers. Our strategy may open a way to grow ultra-small hollow particles on graphene for applications in many fields such as eletromagnetic wave absorption and energy storage and conversion.
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Affiliation(s)
- Feng Yan
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education and College of Science, Harbin Engineering University, Harbin 150001, China.
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28
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Zhao H, Cheng Y, Liang X, Du Y, Ji G. Constructing Large Interconnect Conductive Networks: An Effective Approach for Excellent Electromagnetic Wave Absorption at Gigahertz. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b05141] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huanqin Zhao
- College
of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Yan Cheng
- College
of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Xiaohui Liang
- College
of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Youwei Du
- Laboratory
of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Guangbin Ji
- College
of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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29
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Mu C, Song J, Wang B, Zhang C, Xiang J, Wen F, Liu Z. Two-dimensional materials and one-dimensional carbon nanotube composites for microwave absorption. NANOTECHNOLOGY 2018; 29:025704. [PMID: 29131811 DOI: 10.1088/1361-6528/aa9a2a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, hierarchical architecture MoS2/CNT nanohybrids synthesized by the hydrothermal method, with different CNT proportions are systematically investigated for their microwave absorption. MoS2 nanoflowers are anchored uniformly on the surface of a CNT when the proportion of the MoS2/CNT nanohybrids was 10:2, and the reflection loss can attain -20 dB in the range of 3.4-13.9 GHz with multiple thicknesses from 1.5-5.0 mm, while an optimal consequence of -46 dB can be reached at 6.6 GHz at 2.9 mm. The excellent performance indicates that the MoS2/CNT = 10:2 nanohybrids have the potential for use as microwave absorbing materials.
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Affiliation(s)
- Congpu Mu
- Key Laboratory for Microstructure Material Physics of Hebei Province, Yanshan University, Qinhuangdao 066004, People's Republic of China. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China
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30
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Li J, Zhang D, Qi H, Wang G, Tang J, Tian G, Liu A, Yue H, Yu Y, Feng S. Economical synthesis of composites of FeNi alloy nanoparticles evenly dispersed in two-dimensional reduced graphene oxide as thin and effective electromagnetic wave absorbers. RSC Adv 2018; 8:8393-8401. [PMID: 35541988 PMCID: PMC9078529 DOI: 10.1039/c7ra13737k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 02/10/2018] [Indexed: 11/21/2022] Open
Abstract
Developing electromagnetic wave absorbing materials prepared by a facile and economical way is a great challenge. Herein, we report a feasible route to synthesize a series of two-dimensional FeNi/rGO composites by a hydrothermal method followed by a carbonization process. The characterization confirms that nano-sized FeNi alloy nanoparticles are evenly supported onto graphene sheets without aggregation. The homogeneous dispersion of the nanoparticles may result from the introduction of glucose and the oxygen-containing groups on the surface of the graphene oxide. Measurements show that the microwave attenuation capability of the composites can be improved dramatically by adjusting the proportion of dielectric and magnetic components. Consequently, the two-dimensional magnetic material (FeNi/rGO-100) exhibits an excellent microwave absorption performance. In detail, the minimum reflection loss of −42.6 dB and effective bandwidth of 4.0 GHz can be reached with a thinner thickness of 1.5 mm. This study demonstrates that synergistic effects among the magnetic particles, reduced graphene oxide and amorphous carbon layers give rise to the highlighted microwave attenuation ability. Overall, the FeNi/rGO composite is a promising candidate to be used as a microwave absorber, and the feasible and economical method has shown potential application to construct multitudinous two-dimensional materials. Two-dimensional magnetic FeNi/rGO composites with excellent microwave absorbing performance have been synthesized under the assistance of glucose.![]()
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31
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Yin Y, Liu X, Wei X, Li Y, Nie X, Yu R, Shui J. Magnetically Aligned Co-C/MWCNTs Composite Derived from MWCNT-Interconnected Zeolitic Imidazolate Frameworks for a Lightweight and Highly Efficient Electromagnetic Wave Absorber. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30850-30861. [PMID: 28820573 DOI: 10.1021/acsami.7b10067] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Developing lightweight and highly efficient electromagnetic wave (EMW) absorbing materials is crucial but challenging for anti-electromagnetic irradiation and interference. Herein, we used multiwalled carbon nanotubes (MWCNTs) as templates for growth of Co-based zeolitic imidazolate frameworks (ZIFs) and obtained a Co-C/MWCNTs composite by postpyrolysis. The MWCNTs interconnected the ZIF-derived Co-C porous particles, constructing a conductive network for electron hopping and migration. Moreover, the Co-C/MWCNTs composite was aligned in paraffin matrix under an external magnetic field, which led to a stretch of the MWCNTs along the magnetic field direction. Due to the anisotropic permittivity of MWCNTs, the magnetic alignment considerably increased the dielectric loss of the Co-C/MWCNTs composite. Benefiting from the conductive network, the orientation-enhanced dielectric loss, and the synergistic effect between magnetic and dielectric components, the magnetically aligned Co-C/MWCNTs composite exhibited extremely strong EMW absorption, with a minimum reflection loss (RL) of -48.9 dB at a filler loading as low as 15 wt %. The specific RL value (RL/filler loading) of the composite was superior to that of the previous MOF-derived composite absorbers. It is expected that the proposed strategy can be extended to the fabrication of other lightweight and high-performance EMW-absorbing materials.
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Affiliation(s)
- Yichao Yin
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Xiaofang Liu
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Xiaojun Wei
- Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Ya Li
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Xiaoyu Nie
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Ronghai Yu
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
| | - Jianglan Shui
- School of Materials Science and Engineering, Beihang University , Beijing 100191, China
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32
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Zhang C, Wang B, Xiang J, Su C, Mu C, Wen F, Liu Z. Microwave Absorption Properties of CoS 2 Nanocrystals Embedded into Reduced Graphene Oxide. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28868-28875. [PMID: 28771314 DOI: 10.1021/acsami.7b06982] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
CoS2 nanoparticles and CoS2/reduced graphene oxide (CoS2/rGO) nanohybrids were fabricated by a unique single-mode microwave-assisted hydrothermal method. The microwave absorption properties of CoS2/rGO composites with different rGO proportions were investigated. Morphology analysis indicated that the CoS2 nanoparticles were uniformly embedded into rGO without aggregation. The complex permittivity of CoS2/rGO nanohybrids could be artificially tuned with the rGO proportions. For the CoS2/rGO 1:2 composite, the minimum reflection loss (RL) of -56.9 dB was achieved at 10.9 GHz for the thickness of 2.2 mm; meanwhile, the RL exceeding -10 dB were obtained in the frequency range of 9.1-13.2 GHz. Compared with other rGO-based materials, CoS2/rGO composite exhibited superior microwave absorption ability at a rather thin thickness and it has great potential to be used as a high-efficiency and tunable microwave absorber.
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Affiliation(s)
- Can Zhang
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Bochong Wang
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
- Hebei Key Laboratory of Microstructure Material Physics, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Jianyong Xiang
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Can Su
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Congpu Mu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
- Hebei Key Laboratory of Microstructure Material Physics, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Fusheng Wen
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
- Hebei Key Laboratory of Microstructure Material Physics, Yanshan University , Qinhuangdao 066004, People's Republic of China
| | - Zhongyuan Liu
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, People's Republic of China
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