Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 553, Issue -, Pages 465-474Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.06.058
Keywords
Fe3O4@C nanosphere; Hierarchical structure; MnO2; EM wave absorption
Categories
Funding
- National Natural Science Foundation of China [51407134, 51603108, 51801001]
- China Postdoctoral Science Foundation [2016M590619, 2016M601878]
- Natural Science Foundation of Shandong Province [ZR2019YQ24]
- Provincial Key Research and Development Program of Shaanxi [2019GY-197]
- Key Laboratory of Engineering Dielectrics and Its Application (Harbin University of Science and Technology), Ministry of Education [KFZ1803]
- Key Project of Baoji University of Arts and Sciences [ZK2018051]
- Natural Science Basic Research Plan in Shaanxi Province of China [2017JQ5116]
- Thousand Talents Plan for Young Professionals of Shaanxi Province
- Thousand Talents Plan
- World-Class University and Discipline
- Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province
- World-Class Discipline Program of Shandong Province
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In this work, a novel Fe3O4@C@MnO2 hybrid was successfully synthesized via facile method. The morphology, structure, chemical composition, magnetic behavior and EM wave absorbing performance of the hybrid were systematically investigated. Results indicate that the hybrid possesses uniform hierarchical and mesoporous structure. The magnetic saturation(Ms) value of the hybrid is 19.8 emu g(-1), which is beneficial to improve magnetic loss. According to its reflection loss curve, the hybrid performs superior EM wave absorption capacity, with a minimum reflection loss value and effective absorbing bandwidth of -35 dB and 5 GHz when the specimen thickness is 2.7 mm. The excellent performance of this hybrid can mainly be attributed to its ideal matching of magnetic loss and dielectric loss, large specific surface area, mesoporous structure and interfacial polarizations. Such new material has the potential to be a superior electromagnetic wave absorber, or applied as a functional filler to modify resin matrix. (C) 2019 Elsevier Inc. All rights reserved.
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