Article
Chemistry, Multidisciplinary
Tao Shang, Qingshan Lu, Jianjun Zhao, Luomeng Chao, Yanli Qin, Ningyu Ren, Yuehou Yun, Guohong Yun
Summary: 3D-GLN/Fe3O4 hybrid exhibited outstanding absorption properties, with a minimum R-L value of -46.8 dB. The effective absorption bandwidth in the thickness range of 2.0-5.5 mm was 13.0 GHz, covering part of the C-band and the entire X-band, as well as the entire Ku-band.
Article
Chemistry, Physical
Huan Zhang, Nian Luo, Tinglong Liu, Feng Chen, Qiang Fu
Summary: This study prepared a series of large-sheet GO using a thermal reduction method and investigated their MA properties. The results showed that the MA performance of rGO was related to the reduction degree and the size of the sheet. Large sheet graphene was more likely to form a conductive network, reducing the filler loading. By mixing rGO with different reduction degrees, the reflection loss and absorption bandwidth were significantly improved, while the loading was only 1.5 wt%.
Article
Chemistry, Physical
Hengdong Ren, Sheng Wang, Wei Lian, Jialin Ma, Yan Zhao, Yin Liu, Ling Bing Kong, Tian Shu Zhang, Won-Chun Oh
Summary: In this study, coral-like Pal-dispersed Fe3O4/PANI composites were prepared with improved electromagnetic absorption performance by dispersing Fe3O4 and PANI nanoparticles on Palygorskite (Pal) frameworks. The composites exhibited an increase in specific surface area and fluffy coral-like structure with increasing Pal content, showing optimal reflection loss and broad effective absorption bandwidth. This work provides an inexpensive framework for dispersing nanoparticles in electromagnetic absorption materials, suggesting a new application of Pal.
APPLIED CLAY SCIENCE
(2021)
Article
Chemistry, Physical
Teng Chen, Jun Cai, De De Gong, Chang Liu, Peng Liu, Xiang Cheng, Deyuan Zhang
Summary: This study proposes a novel biochar absorber based on Spirulina cells, which shows enhanced microwave absorption performance through dual loading of magnetic nanoparticles. The biochar absorbers fabricated at various temperatures demonstrate improved absorption compared to samples with single deposition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Peng He, Wenjun Ma, Jian Xu, Yizhe Wang, Zhong-Kai Cui, Jie Wei, Peiyuan Zuo, Xiaoyun Liu, Qixin Zhuang
Summary: This study introduces an innovative method for constructing adjustable surface conductive networks that can achieve a balance between enhanced attenuation and impedance mismatch in the microwave absorption mechanism. By employing a hierarchical construction strategy and quantitative construction technique, conductive metal-organic frameworks (MOFs) derivatives are introduced into the classic yolk-shell structure composed of electromagnetic components and the cavity to achieve remarkable optimized performance. The feasibility of this design is further verified through experimental results and simulation calculations.
Article
Nanoscience & Nanotechnology
Ali Saffar Shamshirgar, Rocio E. Rojas Hernandez, Girish C. Tewari, Jose Francisco Fernandez, Roman Ivanov, Maarit Karppinen, Irina Hussainova
Summary: Graphene-enhanced composites show high absorption efficiency in X-band, with significant improvement at specific ratios. By constructing a functionally graded multilayer design, the highest absorption efficiency of 99.99% was achieved, demonstrating the potential of fillers and multilayer designs for microwave absorbers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Ke Ran, Wenjian Wang, Xingwang Hou, Yilin Huang, Zidong Zhang, Dongxu He, Yuan Fang, Shuai Wang, Rui Zhao, Weidong Xue
Summary: Graphene can be modified by low-temperature oxygen plasma to regulate its electromagnetic parameters and improve microwave absorption. The use of CST simulation confirms the excellent microwave absorption properties of the modified sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qiong Shang, Huixia Feng, Jianpu Liu, Qing Lian, Zeyu Feng, Nali Chen, Jianhui Qiu, Hongjing Wu
Summary: The ZFO@PANI composites synthesized by a solvothermal process exhibit excellent microwave absorption performance, with optimized composites achieving minimum reflection loss and broad absorption bandwidth. The enhanced performance is attributed to the synergistic effect between dielectric loss and magnetic loss in the composites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Junfeng Qiu, Haopeng Cao, Jun Liao, Rongxiao Du, Kai Dou, Natalia Tsidaeva, Wei Wang
Summary: Three-dimensional (3D) porous coral-like Co1.29Ni1.71O4 microspheres were successfully combined with reduced graphene oxide (rGO) to form Co1.29Ni1.71O4/rGO aerogels, serving as efficient microwave absorbers. The electromagnetic parameters of the composites can be effectively tuned by adjusting the mass ratio of Co1.29Ni1.71O4 microspheres and rGO, thereby improving their microwave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
K. S. Ashraff Ali, M. M. Ravikumar, J. Mohammed, Naeim Farouk, V. Mohanavel, M. Ravichandran
Summary: This study reported the microwave absorption properties of BaFe12O19, carbon fiber@Fe3O4 composite, and graphene@BaFe12O19@Fe3O4 composite, and their effects on the microwave absorption performance. Increasing filler loading in different combinations can enhance microwave absorption capabilities within a certain range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Yufan Cao, Chuyang Liu, Zhengrong Xue, Tao Jiang, Gang Fang, Kangsen Peng, Yujing Zhang
Summary: In this study, Fe3O4/Ag composites were synthesized using a one-step hydrothermal method, and the microwave absorbing performance was successfully achieved in the frequency range of 2-12 GHz by varying the molar ratio. The composite material exhibited excellent microwave absorption capability within the range of 4.88-9.76 GHz at a thickness of 3.6 mm, with a minimum reflection loss of 63.2 dB.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Mengjia Wei, Lei Wang, Sajjad Ur Rehman, Wenmiao Zhang, Shuqi Shen, Biyun Peng, Yifeng Hu, Tongxiang Liang
Summary: In this study, Fe3O4/C@SiC nanocomposites were synthesized and demonstrated excellent microwave absorption performance. The combination of magnetic Fe3O4 and porous carbon optimized the impedance matching of the material and improved its attenuation capability. Furthermore, the study highlighted the potential of SiC for microwave absorption applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Fuling He, Wei Zhao, Lei Cao, Zhifu Liu, Linquan Sun, Zhiyu Zhang, Hui Zhang, Tao Qi
Summary: M-type barium ferrite (BaM) with ordered mesoporous structure (M-BaM) is prepared by a sol-gel process enhanced by mixed anionic and cationic surfactants, owning ten times larger surface area than BaM and 40% reflection loss enhancing. Then, M-BaM is compounded with nitrogen-doped reduced graphene oxide (MBG) via hydrothermal reaction, achieving optimal impedance matching and greatly increasing multiple reflections/interfacial polarization. The optimized MBG-2 (GO:M-BaM = 1:10) exhibits a minimum reflection loss of -62.6 dB and an effective bandwidth of 4.2 GHz at an ultra-thin thickness of 1.4 mm, thanks to the marriage of mesoporous structure of M-BaM and light mass of graphene, reducing the density of MBG.
Article
Chemistry, Physical
Zhiwei Chen, Li Zhou, Yufan Cao, Gang Fang, Yujing Zhang, Chuyang Liu
Summary: Due to the growing demands for radar stealth and electromagnetic pollution prevention, lightweight, broad bandwidth, thin thickness and strong strength EM-waves absorbing materials are highly needed. This work successfully synthesized the porous Fe3O4/Ag composites by a self-propagating combustion method, which has the advantages of simplicity, green and high yield. The magneto-electric synergy components and porous microstructure effectively reduces the density of the composites and strengthens the absorption of EM waves.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jiandong Wu, Yang Feng, Ying Xia, Qing Zhu, Liping Luo, Lan Ma, Haiming Li, Hongxia Yan, Shuhua Qi
Summary: By loading highly defective TiO2 onto an MXene sheet with S-doping and high-temperature annealing treatment, the impedance-matching properties were optimized, enhancing the electromagnetic wave absorption effect and improving the performance of MXene EMW absorbers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
