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Guo S, Cai Y, Cheng L, Yuan Y, Wang Y, Yu H, Hu Z, Chen D, Yuan H. Ultraflexible Ultrathin 3D/1D Hierarchical Interpenetrating Ni-MOF/CNT Buckypaper Composites: Microstructures and Microwave Absorption Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:32713-32726. [PMID: 38860983 DOI: 10.1021/acsami.4c05050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Metal-organic frameworks (MOFs) have attracted attention due to their designable structures. However, recently reported MOF microwave-absorbing materials (MAMs) are dominated by powders. It remains a challenge to design MOF/carbon nanotube (CNT) composite structures that combine the mechanical properties of self-supporting flexibility with excellent microwave absorption. This work involves the hydrothermal approach to grow Ni-MOF of different microstructures in situ on the CNT monofilament by adjusting the molar ratio of nickel ions to organic ligands. Subsequently, an ultraflexible self-supporting Ni-MOF/CNT buckypaper (BP) is obtained by directional gas pressure filtration technology. The BP porous skeleton and the Ni-MOF with a unique porous structure provide effective impedance matching. The CNTs contribute to the conduction loss, the cross-scale heterogeneous interface generated by Ni-MOF/CNT BP provides rich interfacial polarization loss, and the porous structure complicates the microwave propagation path. All factors work together to give Ni-MOF/CNT BP an excellent microwave absorption capacity. The minimum reflection losses of Ni-MOF/CNT BPs decorated with granular-, hollow porous prism-, and porous prism-shaped Ni-MOFs reach -50.8, -57.8, and -43.3 dB, respectively. The corresponding effective absorption bandwidths are 4.5, 6.3, and 4.8 GHz, respectively. Furthermore, BPs show remarkable flexibility as they can be wound hundreds of times around a glass rod with a diameter of 4 mm without structural damage. This work presents a new concept for creating ultraflexible self-supported MOF-based MAMs with hierarchical interpenetrating porous structures, with potential application advantages in the field of flexible electronics.
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Affiliation(s)
- Siyu Guo
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Yanzhi Cai
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Laifei Cheng
- Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Yibing Yuan
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Yuhan Wang
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Haiming Yu
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Zhongyi Hu
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Dengpeng Chen
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
| | - Hudie Yuan
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, P. R. China
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Selseleh-Zakerin E, Mirkhan A, Shafiee M, Alihoseini M, Khani M, Shokri B, Tavassoli SH, Peymanfar R. Plasma Engineering toward Improving the Microwave-Absorbing/Shielding Feature of a Biomass-Derived Material. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12148-12158. [PMID: 38806445 DOI: 10.1021/acs.langmuir.4c01046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
During the past decade, ever-increasing electromagnetic pollution has excited a global concern. A sustainable resource, facile experimental scenario, fascinating reflection loss (RL), and broad efficient bandwidth are the substantial factors that intrigue researchers. This research led to the achievement of a brilliant microwave-absorbing material by treating pampas as biomass. The carbon-based microfibers attained by biowaste were treated by plasma under diverse environments to amplify their microwave-absorbing features. Moreover, a pyrolysis scenario was performed to compare the results. The reductive processes were performed by H2 plasma and carbonization. However, the CO2 plasma was performed to regulate the heteroatoms and defects. Interestingly, polystyrene (PS) was applied as a microwave-absorbing matrix. The aromatic rings existing in the absorbing medium establish electrostatic interactions, elevating interfacial polarization, and physical characteristics of PS augment the practical applications of the final product. The manipulated biomasses were characterized by Raman, X-ray diffraction, energy-dispersive spectroscopy, field emission scanning electron microscopy, and diffuse reflection spectroscopy analyses. Eventually, the microwave-absorbing features were estimated by a vector network analyzer. The plasma-treated pampas under H2/Ar blended with PS gained a maximum RL of -90.65 dB at 8.79 GHz and an efficient bandwidth (RL ≤ -10 dB) of 4.24 GHz with a thickness of 3.20 mm; meanwhile, plasma treatment under CO2 led to a maximum RL of 97.99 dB at 14.92 GHz and an efficient bandwidth of 7.74 GHz with a 2.05 mm thickness. Particularly, the biomass plasmolyzed under Ar covered the entire X and Ku bands with a thickness of 2.10 mm. Notably, total shielding efficiencies of the treated bioinspired materials were up to ≈99%, desirable for practical applications.
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Affiliation(s)
- Elnaz Selseleh-Zakerin
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh 39177-67746, Iran
- Department of Science, Iranian Society of Philosophers, Tehran 13187-76511, Iran
- Peykareh Enterprise Development Company, Tehran 15149-45511, Iran
| | - Ali Mirkhan
- Department of Science, Iranian Society of Philosophers, Tehran 13187-76511, Iran
- Peykareh Enterprise Development Company, Tehran 15149-45511, Iran
| | - Mojtaba Shafiee
- Laser and Plasma Institute, Shahid Beheshti University, Tehran 19839-69411, Iran
| | | | - Mohammadreza Khani
- Laser and Plasma Institute, Shahid Beheshti University, Tehran 19839-69411, Iran
| | - Babak Shokri
- Laser and Plasma Institute, Shahid Beheshti University, Tehran 19839-69411, Iran
| | | | - Reza Peymanfar
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh 39177-67746, Iran
- Department of Science, Iranian Society of Philosophers, Tehran 13187-76511, Iran
- Peykareh Enterprise Development Company, Tehran 15149-45511, Iran
- Laser and Plasma Institute, Shahid Beheshti University, Tehran 19839-69411, Iran
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Chen Y, Wang Y, Li C, Wang W, Xue X, Pan H, Che R. Integrating Sulfur Doping with a Multi-Heterointerface Fe 7S 8/NiS@C Composite for Wideband Microwave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401618. [PMID: 38712450 DOI: 10.1002/smll.202401618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/30/2024] [Indexed: 05/08/2024]
Abstract
Heterointerface engineering is presently considered a valuable strategy for enhancing the microwave absorption (MA) properties of materials via compositional modification and structural design. In this study, a sulfur-doped multi-interfacial composite (Fe7S8/NiS@C) coated with NiFe-layered double hydroxides (LDHs) is successfully prepared using a hydrothermal method and post-high-temperature vulcanization. When assembled into twisted surfaces, the NiFe-LDH nanosheets exhibit porous morphologies, improving impedance matching, and microwave scattering. Sulfur doping in composites generates heterointerfaces, numerous sulfur vacancies, and lattice defects, which facilitate the polarization process to enhance MA. Owing to the controllable heterointerface design, the unique porous structure induced multiple heterointerfaces, numerous vacancies, and defects, endowing the Fe7S8/NiS@C composite with an enhanced MA capability. In particular, the minimum reflection loss (RLmin) value reached -58.1 dB at 15.8 GHz at a thickness of 2.1 mm, and a broad effective absorption bandwidth (EAB) value of 7.3 GHz is achieved at 2.5 mm. Therefore, the Fe7S8/NiS@C composite exhibits remarkable potential as a high-efficiency MA material owing to the synergistic effects of the polarization processes, multiple scatterings, porous structures, and impedance matching.
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Affiliation(s)
- Yikun Chen
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Yan Wang
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Chenchen Li
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Wei Wang
- School of Materials and Chemical Engineering, Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Xu Xue
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, China
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
- College of Physics, Donghua University, Shanghai, 201620, China
- Zhejiang Laboratory, Hangzhou, 311100, China
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Sheykhmoradi S, Ghaffari A, Mirkhan A, Ji G, Tan S, Peymanfar R. Dendrimer-assisted defect and morphology regulation for improving optical, hyperthermia, and microwave-absorbing features. Dalton Trans 2024; 53:4222-4236. [PMID: 38332744 DOI: 10.1039/d3dt04228f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Electromagnetic pollution and cancer are phenomena that essentially endanger the future of humanity. Herein, multiple approaches are being proposed to solve the aforementioned issues. Recent studies have demonstrated that by regulating the morphology, defect, and phase of materials, their microwave absorbing, optical, and hyperthermia properties are tunable. Calcium ferrite with proper dielectric, magnetic, and biocompatible characteristics was chosen as a substantial candidate to promote its microwave-absorbing properties by regulating its structure. Spinel CaFe2O4 was synthesized through sol-gel and solvothermal routes and its phase, defect, and morphology were manipulated using innovative procedures. Glucose was applied as conventional defecting and templating agent; interestingly, a dendrimer was designed to bear and form nanoparticles. More importantly, a novel reductive process was designed to fabricate one-put Ca/Fe3O4 using a solvothermal method. Particularly, polypropylene (PP) was employed as a practical polymeric matrix to fabricate the eventual product. Structures were molded at a low filling ratio to evaluate their optical and microwave-absorbing performance. As expected, defects, morphology, and phase play a pivotal role in tuning the optical and microwave-absorbing properties of calcium ferrite derivates. Interestingly, the dendrimer-assisted (D-A) formation of CaFe2O4 demonstrated a fascinating reflection loss (RL) of 70.11 dB and an efficient bandwidth (RL ≤ -20 dB) of 7.03 GHz with ultralow thickness (0.65 mm) and filling ratio (10 wt%), attaining proper shielding efficiency (SE) and hyperthermia desirable for its practical application as a material for shielding buildings and cancer therapy. The presented perspective develops new inspirations for architecting microwave absorbing/shielding materials with advanced applications in therapeutic issues.
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Affiliation(s)
- Somayeh Sheykhmoradi
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
| | - Arezoo Ghaffari
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh, Iran
| | - Ali Mirkhan
- Iranian Society of Philosophers, Department of Science, Tehran, Iran
- Peykareh Enterprise Development CO., Tehran, Iran
| | - Guangbin Ji
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, P. R. China
| | - Shujuan Tan
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, P. R. China
| | - Reza Peymanfar
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh, Iran
- Iranian Society of Philosophers, Department of Science, Tehran, Iran
- Peykareh Enterprise Development CO., Tehran, Iran
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Liu Y, Zhang H, Chen G, Wang X, Qian Y, Wu Z, You W, Tang Y, Zhang J, Che R. Engineering Phase to Reinforce Dielectric Polarization in Nickel Sulfide Heterostructure for Electromagnetic Wave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2308129. [PMID: 38037491 DOI: 10.1002/smll.202308129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/22/2023] [Indexed: 12/02/2023]
Abstract
Engineering phase transition in micro-nanomaterials to optimize the dielectric properties and further enhance the electromagnetic microwave absorption (EMA) performance is highly desirable. However, the severe synthesis conditions restrict the design of EMA materials featuring controllable phases, which hinders the tunability of effective absorption bandwidth (EAB) and leads to an unclear loss mechanism. Herein, a seed phase decomposition-controlled strategy is proposed to induct nickel sulfide (NiSx ) absorbers with controllable phases and hollow sphere nature. Transmission electron microscopy holography and theoretical calculations evidence that the reconstruction of atoms in phase transition induces numerous heterogeneous interfaces and lattice defects/sulfur vacancies to cause varied work functions and local electronic redistribution, which contributes to reinforced dielectric polarization. As a result, the optimized NiS2 /NiS heterostructure enables enhanced EM attenuation capability with a wide EAB of 5.04 GHz at only 1.6 mm, compared to that of NiS2 and NiS. Moreover, the correlation between EAB and NiS phase content is demonstrated as the "volcano" feature. This study on the concept of phase transition of micro-nanomaterials can offer a novel approach to constructing highly efficient absorbers for EMA and other functionalities.
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Affiliation(s)
- Yihao Liu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Huibin Zhang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Guanyu Chen
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Xiangyu Wang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Yuetong Qian
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Zhengchen Wu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Wenbin You
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
| | - Yi Tang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438, P. R. China
| | | | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, P. R. China
- Zhejiang Laboratory, Hangzhou, 311100, P. R. China
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Lin Z, Hao Y, Huang H, He Q, Su G, Wu C, Guo X, Xu L, Zhao Y. Porous Carbonaceous Aerogels Composed of Multiscale Carbon-Based Units for High-Performance Microwave Absorption. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54838-54850. [PMID: 37968844 DOI: 10.1021/acsami.3c13489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Structural engineering is definitely a promising and effective approach to develop excellent microwave absorbing materials with quantities of advantages. Especially, when carbon materials act as the constituents, the fabricated absorbers are available to gain more prominent absorption performance. However, extra high conductivities and the widespread aggregations and stacking of low-dimensional carbon materials always detrimentally affect the impedance matching and weaken the attenuation capacity, inevitably confining their further absorption applications. Herein, by introducing the amorphous chiral carbon nanocoils to overcome the challenges and achieve the strategies of structure optimization and multicomponent recombination, the reduced graphene oxide/carbon nanocoil/carbon nanotube aerogels were successfully synthesized by a successive hydrothermal method and freeze-drying strategy. The as-obtained aerogels possess a porous architecture that contribute to the extraordinary impedance matching and multiple reflections, which integrate the multifarious dielectric loss mechanisms of diverse carbon materials simultaneously. Benefiting from the tricomponent synergistic effect, the ultralight aerogels reach an outstanding microwave absorption property with an extremely low filler content of only 6 wt %. This work provides a helpful approach to design hierarchical absorbers consisted by multidimensional carbon materials for fantastic microwave absorption.
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Affiliation(s)
- Zhicheng Lin
- College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China
| | - Yu Hao
- College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China
| | - Hui Huang
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Qingxu He
- College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China
| | - Gehong Su
- College of Science, Sichuan Agricultural University, Ya'an 625000, China
| | - Chun Wu
- College of Science, Sichuan Agricultural University, Ya'an 625000, China
| | - Xin Guo
- School of Information and Communication Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Lijia Xu
- College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China
| | - Yongpeng Zhao
- College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China
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Arabi M, Hekmatara H, Baizaee SM. GO-decorated chain-like Fe 2O 3/FeMn 2O 4 NPs (GO-Fe 2O 3/FeMn 2O 4 nanocomposites) with ultrabroad band microwave absorption. Phys Chem Chem Phys 2023; 25:30949-30959. [PMID: 37937423 DOI: 10.1039/d3cp03942k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
In this study, GO-Fe2O3/FeMn2O4 nanocomposites were synthesized in which the chain-like Fe2O3/FeMn2O4 NPs were decorated on GO sheets. The crystalline phases of Fe2O3 and FeMn2O4 were recognized from the XRD pattern. TEM images showed that the oval-shaped Fe2O3/FeMn2O4 NPs with an almost narrow size distribution (60-80 nm) were connected to form chains. The Fe2O3/FeMn2O4 NP chains were decorated on the GO sheets in different weight ratios and GO-Fe2O3/FeMn2O4 (1 : 3), GO-Fe2O3/FeMn2O4 (1 : 4), and GO-Fe2O3/FeMn2O4 (1 : 5) nanocomposites, which were respectively named S1, S2, and S3, were finally produced. The microwave attenuation performance of all samples was investigated based on their EM parameters. The results demonstrated the superior attenuation ability of S1 and S2 in terms of reflection loss and absorption bandwidth. The minimum reflection losses (RLmin) for S1 and S2 reached over -85 dB and -88 dB and at the rest of the frequency band, the RL varied from -10 dB to -40 dB for samples thicker than 2.4 mm. The effective bandwidth (RL ≤ -10 dB) was 10 GHz, which covered the entire Ku and X bands for S1, and was -8.3 GHz, which eliminated the entire Ku band and half of the X band, for S2 at 2.4-3.6 mm with matching thicknesses. S3 exhibited a relatively weaker absorption performance. The results confirmed that achieving the maximum EM absorption performance of GO-based composites is guaranteed by optimizing the weight ratio of the decorative material (Fe2O3/FeMn2O4 NPs).
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Affiliation(s)
- Mozhgan Arabi
- Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.
| | - Hoda Hekmatara
- Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.
| | - Seyyed Mahdy Baizaee
- Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.
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Yu G, Shao G, Xu R, Chen Y, Zhu X, Huang X. Metal-Organic Framework-Manipulated Dielectric Genes Inside Silicon Carbonitride toward Tunable Electromagnetic Wave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304694. [PMID: 37455351 DOI: 10.1002/smll.202304694] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Heterointerface engineering for different identifiable length scales has emerged as a key research area for obtaining materials capable of high-performance electromagnetic wave absorption; however, achieving controllable architectural and compositional complexity in nanomaterials with environmental and thermal stabilities remains challenging. Herein, metal-containing silicon carbonitride (SiCN/M) nanocomposite ceramics with multiphase heterointerfaces were in situ synthesized via coordination crosslinking, catalytic graphitization, and phase separation processes using trace amounts of metal-organic frameworks (MOFs). The results reveal that the regulation of dielectric genes by MOFs can yield considerable lattice strain and abundant lattice defects, contributing to strong interfacial and dipole polarizations. The as-prepared SiCN/M ceramics demonstrate excellent microwave absorption performance: the minimum reflection loss (RLmin ) is -72.6 dB at a thickness of only 1.5 mm and -54.1 dB at an ultralow frequency of 3.56 GHz for the SiCN/Fe ceramics and the RLmin is -55.1 dB with a broad bandwidth of 3.4 GHz at an ultralow thickness of 1.2 mm for the SiCN/CoFe ceramic. The results are expected to provide guidance for the design of future dielectric microwave absorption materials based on heterointerface engineering while offering a paradigm for developing MOF-modified SiCN nanocomposite ceramics with desirable properties.
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Affiliation(s)
- Gaoyuan Yu
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Gaofeng Shao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Rupan Xu
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Yu Chen
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Xiaohui Zhu
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Xiaogu Huang
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
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Si W, Liao Q, Chu Y, Zhang Z, Chu X, Qin L. A multi-layer core-shell structure CoFe 2O 4@Fe 3C@NiO composite with high broadband electromagnetic wave-absorption performance. NANOSCALE 2023; 15:16381-16389. [PMID: 37789822 DOI: 10.1039/d3nr03837h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Enhancing the absorption strength of electromagnetic waves and broadening the absorption band are constant goals in designing and preparing absorbing materials. The use of composites has shown to be a very efficient method for acquiring broadband-absorbing materials, while the construction of a core-shell structure has demonstrated a significant enhancement in absorption capability. In this paper, the nanocomposite metal-organic framework (MOF) derivative CoFe2O3@C with a double core-shell structure and the nanocomposite MOF derivative CoFe2O4@Fe3C@NiO with a three-layered core-shell structure have been prepared using a chemical compound. The multi-layer structure provides more active sites for the multiple reflection and scattering of electromagnetic waves, effectively improving the attenuation capability. The effective absorption band (EAB) (reflection loss (RL) ≤ -5 dB) of both CoFe2O3@C and CoFe2O4@Fe3C@NiO are broadened compared to that of the ZIF-67 derivative. In particular, the minimum reflection loss (RLmin) of CoFe2O3@C was -52.7 dB at 13.3 GHz and 2.04 mm, and the EAB (RL ≤ -5 dB) is as wide as 9.35 GHz. Compared with the ZIF-67 derivative, the EAB exhibits a twofold rise, accompanied by a corresponding thickness increase of just 0.24 mm. At a matched thickness of 2.2 mm, the EAB of CoFe2O4@Fe3C@NiO can even reach 11.9 GHz.
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Affiliation(s)
- Wei Si
- Key Laboratory of Sensors, Beijing Information Science & Technology University, Beijing 100192, China.
| | - Qingwei Liao
- Key Laboratory of Sensors, Beijing Information Science & Technology University, Beijing 100192, China.
- Key Laboratory of Modern Measurement & Control Technology, Ministry of Education, Beijing Information Science & Technology University, Beijing 100192, China
| | - Yu Chu
- Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Zhiwei Zhang
- Key Laboratory of Sensors, Beijing Information Science & Technology University, Beijing 100192, China.
| | - Xiangcheng Chu
- State Key Laboratory of New Ceramics and Fine Processing, School of Material Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Lei Qin
- Key Laboratory of Sensors, Beijing Information Science & Technology University, Beijing 100192, China.
- Key Laboratory of Modern Measurement & Control Technology, Ministry of Education, Beijing Information Science & Technology University, Beijing 100192, China
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