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Fe3O4-intercalated reduced graphene oxide nanocomposites with enhanced microwave absorption properties |
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| Affiliation: | 1. National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, Jiangsu, PR China;2. College of Textiles and Clothing, Nantong University, Nantong, 226019, Jiangsu, PR China;3. College of Science, Nantong University, Nantong, 226019, Jiangsu, PR China;1. School of Physical Science, Jawaharlal Nehru University, Delhi, 110067, India;2. Special Center for Nanoscience, Jawaharlal Nehru University, Delhi, 110067, India;1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China;2. Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang Aerospace University, Shenyang 110136, China;1. Department of Physics, University of South Florida, Tampa, FL, 33620-5700, USA;2. Department of Physics and Materials Science, Kwara State University, Malete, Kwara State, Nigeria;3. Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Tronoh, Bandar Seri Iskandar, Perak Darul Ridzuan, 32610, Malaysia;4. Department of Statistics and Mathematical Sciences, Kwara State University, Malete, Kwara State, Nigeria;1. Department of Materials Science and Engineering, HEDPS/CAPT/LTCS, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Engineering, Peking University, Beijing 100871, China;2. State Key Laboratory of Special Functional Waterproof Materials, Beijing Oriental Yuhong Waterproof Technology Co. Ltd., China;3. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China;4. School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China |
| Abstract: | Fe3O4-intercalated reduced graphene oxide (Fe3O4-rGO) nanocomposites were synthesized by an in situ reduction process. The results of XRD and XPS analyses suggested the successful formation of a Fe3O4 crystal phase within the rGO sheets. The SEM and TEM images demonstrated that Fe3O4 was flaky and was inserted stably within the rGO layers to form a typical sandwich-like structure. The hysteresis loops revealed the superparamagnetic behavior of the Fe3O4-rGO nanocomposites at room temperature. The electromagnetic parameters revealed that Fe3O4-rGO nanocomposites exhibited multiple dielectric relaxation and magnetic resonance. The reflection loss revealed that the maximum loss was ?49.53 dB at 6.32 GHz for a thickness of 3.4 mm while the highest effective absorption bandwidth was 2.96 GHz. |
| Keywords: | rGO Intercalated In situ reduction Sandwich-like structure GO"} {"#name":"keyword" "$":{"id":"kwrd0040"} "$$":[{"#name":"text" "_":"graphene oxide rGO"} {"#name":"keyword" "$":{"id":"kwrd0050"} "$$":[{"#name":"text" "_":"reduced graphene oxide XRD"} {"#name":"keyword" "$":{"id":"kwrd0070"} "$$":[{"#name":"text" "_":"X-ray diffraction FESEM"} {"#name":"keyword" "$":{"id":"kwrd0080"} "$$":[{"#name":"text" "_":"field emission scanning electron microscopy TEM"} {"#name":"keyword" "$":{"id":"kwrd0090"} "$$":[{"#name":"text" "_":"transmission electron microscopy XPS"} {"#name":"keyword" "$":{"id":"kwrd0100"} "$$":[{"#name":"text" "_":"X-ray photoelectron spectroscopy VSM"} {"#name":"keyword" "$":{"id":"kwrd0110"} "$$":[{"#name":"text" "_":"vibrating sample magnetometer VNA"} {"#name":"keyword" "$":{"id":"kwrd0120"} "$$":[{"#name":"text" "_":"vector network analyzer |
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