Article
Materials Science, Composites
Ruiyang Tan, Fangkun Zhou, Ping Chen, Baoshan Zhang, Jintang Zhou
Summary: This study reports a strategy for step-by-step synthesis of PANI/FeCo@C composite microspheres, which significantly improves the microwave absorption performance through multiple loss mechanisms. By optimizing the microsphere structure and introducing multiple interference, the effective absorption bandwidth was successfully extended to 11.81 GHz.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Juan Ding, Ligang Cheng
Summary: The Fe3O4@SiO2@PANI ternary nanocomposite, prepared through a three-step method, demonstrates excellent microwave absorption properties with high RLmax and absorption bandwidth, making it a promising material for microwave absorbers in the field of electromagnetic waves.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Composites
Zimo He, Yiyuan Shi, Wentong Yang, Chen Qian, Yaofeng Zhu
Summary: The development of multifunctional and efficient microwave-absorbing materials is crucial to protect human health and combat interference in electronic devices. In this study, a lightweight PANI/Ti3C2Tx-PVDF composite foam was fabricated and its microwave absorption performance was regulated by the composition and loading content. The PANI/Ti3C2Tx-PVDF composite foam showed impressive microwave absorption performance due to the impedance matching and dielectric loss from its modulated conductivity and porous structure. Moreover, this composite foam demonstrated multifunctionality for various applications. This study may contribute to the facile fabrication of next-generation multifunctional high-efficient microwave-absorbing materials.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Ceramics
Maryam Bonyani, Seyed Mojtaba Zebarjad, Kamal Janghorban, Jin-Young Kim, Hyoun Woo Kim, Sang Sub Kim
Summary: Composite nanofibers of ZnO-PANI were synthesized for NO2 gas sensing. The addition of different weight percentages of PANI to electrospun ZnO nanofibers was explored. The composites showed good thermal, structural, chemical, and morphological properties. The sensor with 25 wt % PANI exhibited the best response to NO2 gas at 300 degrees C, showing great potential for NO2 gas sensing.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Xiaohu Ren, Jingting Wang, Hongfeng Yin, Yun Tang, Huiqing Fan, Hudie Yuan, Shanshan Cui, Le Huang
Summary: In this work, hierarchically hollow CoFe2O4/polypyrrole nanocubes with enhanced electromagnetic characteristics for MW absorption were fabricated. The electromagnetic characteristics can be adjusted by regulating the proportion of polypyrrole. The outcomes demonstrate that the as-prepared composites have outstanding MW absorbing ability and are expected to be potential MW absorbers for extensive applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Hassan Soleimani, Jemilat Yetunde Yusuf, Lee Kean Chuan, Hojjatollah Soleimani, Mustapha Lutfi bin Sabar, Andreas Ochsner, Zulkifly Abbas, Asmau Iyabo Balogun, Gregory Kozlowski
Summary: This study investigates the potential of utilizing cobalt ferrite (CF) nanoparticles grown on eggshell membranes (ESM) to address the issue of electromagnetic interference (EMI). CF nanoparticles were synthesized on ESM through a simple carbonization process, and their microwave absorption performance (MAP) at X-band frequency was evaluated. The composite of CF and ESM, called CESM@CF, exhibited a strong RL peak value of -39.03 mm at an optimal thickness of 1.5 mm. The excellent impedance matching and EM wave attenuation of CESM@CF can be attributed to the multiple interfaces, conduction loss, interfacial polarization, and dual influence from both CF and ESM. CESM@CF composite is projected to be an outstanding biomass-based nano-composite for EM wave absorption applications.
Article
Chemistry, Physical
Na Tian, Chukai Wang, Caiyin You
Summary: A facile approach was proposed to fabricate nanospherical CoFe2O4/Ti3C2Tx composites with excellent microwave absorption performance. The composite exhibited synergistic effects of dielectric loss, magnetic loss, multiple reflection, and conductive loss due to its unique structure and impedance matching. With 80 wt% CoFe2O4 and a matching thickness of 2.6 mm, the CoFe2O4/Ti3C2Tx composite demonstrated a minimum reflection loss (RLmin) of -77.2 dB at 8.0 GHz, making it a promising microwave absorbent.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Peng Wang
Summary: The compounding of Fe3BO5 with FeNi alloy particles significantly adjusts the electromagnetic parameters, optimizes impedance matching, and improves microwave absorption performance. When the thickness is 1.5 mm, the absorption bandwidth (RL <= -10 dB) ranges from 12 GHz to 18 GHz with a width of 6.0 GHz, and the RL peak reaches -37.57 dB at 15.45 GHz, indicating that Fe3BO5 is effective in improving the microwave absorption performance of soft magnetic alloy particles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Yue Yuan, Shicheng Wei, Yi Liang, Bo Wang, Yujiang Wang, Wei Xin, Xinlei Wang, Yu Zhang
Summary: The cobalt ferrite/carbon nanotubes nanocomposite absorber materials synthesized by a solvothermal method demonstrate excellent absorption properties and a wide absorption bandwidth, making them suitable for microwave absorbers in various technological applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jianhui Bi, Chucheng Lin, Danwei Lu, Ao Chen, Xianfeng Meng
Summary: The influence of surfactant on the microstructure and properties of exchange-coupled CoFe2O4/CoFe composites were studied. It was found that using CTAB as the surfactant can result in more two-phase interfaces and excellent dispersion, leading to improved microwave absorption performance of the composites.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Composites
Guohao Cheng, Fei Pan, Xiaojie Zhu, Yanyan Dong, Lei Cai, Wei Lu
Summary: In this study, onion skin-derived hierarchical carbon/hollow CoFe2O4 composite was successfully prepared and showed excellent microwave absorption performance, achieving strong absorption in multi-band at different thicknesses. The synergistic effect of conduction loss, polarization loss, magnetic loss and impedance matching contributed to its outstanding performance, further advancing the development of biomass-derived carbon materials with multi-band microwave absorption properties.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yingdi Ma, Yanli Liu
Summary: In this study, a composite photocatalyst of rGO-ZnO was prepared and characterized. The results showed that the rGO-ZnO composites exhibited significantly enhanced photocatalytic activity in the degradation of methyl orange, which was attributed to the high specific surface area and conductivity of rGO, facilitating efficient charge separation in the rGO-ZnO nanocomposite.
Article
Materials Science, Multidisciplinary
Shujie Liu, Pengfei Yin, Limin Zhang, Yi Zhang, Kaiming Wang, Yongxin Zhan
Summary: The hierarchical carbon/CoFe2O4/Co3Fe7 composites were prepared using a innovative technique, and they showed excellent attenuation properties for absorbing incident electromagnetic wave.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Bing Yan, Jianling Yue, Benhui Fan, Xiaozhong Huang, Jing Yang, Zuojuan Du, Yu Liu
Summary: Hybrids of La-doped CoFe2O4 coated by carbon nanotube ((LaCoFeO)-xCNTs) were successfully synthesized by chemical vapor deposition. Different deposition durations could adjust the growth densities, lengths, and weight fractions of CNTs in the hybrids. The (LaCoFeO)-15CNTs/paraffin-5 wt% composite showed the best electromagnetic wave absorption performance with a minimum reflection loss of -35.33 dB and an effective absorption bandwidth of 3.28 GHz (9.68-12.96 GHz). Meanwhile, (LaCoFeO)-5CNTs 10 wt% exhibited a wide effective absorption bandwidth of 5.44 GHz (12.56-18 GHz), nearly covering the Ku band. The high absorption performances were attributed to the synergistic effects of improved impedance match and increased dielectric and magnetic losses by the microstructure of hybrids.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Ligang Cheng, Qingwei Wang, Juan Ding
Summary: In this study, a Co/CoO@RGO composite material with excellent electromagnetic absorption performance was synthesized, with an RLmin of -56.56 dB and an effective absorption bandwidth of 5.86 GHz. This is attributed to the synergistic effect of magnetic and dielectric materials, as well as various electromagnetic wave loss mechanisms inside the sample.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
