Controlled synthesis of Fe3O4@SnO2/RGO nanocomposite for microwave absorption enhancement |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan;2. Department of Electronic Engineering, Kao Yuan University, No. 1821, Jhongshan Road, Luzhu District, Kaohsiung 82151, Taiwan;1. Division of Physics, Faculty of Science and Agricultural Technology, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand;2. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, People''s Republic of China;2. The State Key Lab of High Performance Ceramics and Superfinemicrostructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People''s Republic of China;1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;2. State key Laboratory of Materials Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;3. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China;4. Advanced Ceramics Research Institute of Zibo High-Tech Industry Development Zone, Zibo 255000, Shandong, China |
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| Abstract: | A ternary nanocomposite of Fe3O4@SnO2/reduced graphene oxide (RGO) with different contents of SnO2 nanoparticles was synthesized by a simple and efficient three-step method. The transmission electron microscopy and field emission scanning electron microscopy characterization display that plenty of Fe3O4@SnO2 core–shell structure nanoparticles are well distributed on the surface of RGO sheets. The X-ray diffractograms show that the products consist of highly crystallized cubic Fe3O4, tetragonal SnO2 and disorderedly stacked RGO sheets. The magnetic hysteresis measurement reveals the ferromagnetic behavior of the products at room temperature. The microwave absorption properties of paraffin containing 50 wt% products were investigated at room temperature in the frequency range of 2–18 GHz by a vector network analyzer. The electromagnetic data show that the maximum reflection loss is ?45.5 dB and ?29.5 dB for Fe3O4@SnO2/RGO-1 and Fe3O4@SnO2/RGO-2 nanocomposite, respectively. Meanwhile, the reflection loss less than ?10 dB is up to 14.4 GHz and 13.8 GHz for Fe3O4@SnO2/RGO-1 and Fe3O4@SnO2/RGO-2 nanocomposite, respectively. It is believed that such nanocomposite could be used as promising microwave absorbers. |
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| Keywords: | C Magnetic properties Microwave absorption Reflection loss |
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