| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
Virtual Lightning Session |
| 제목 |
Incorporating Reduced Graphene Oxide with Magnetic Nanoparticles to Boost Microwave Absorption Properties |
| 초록 |
The rapid development of electronic technology and intensive use of communication devices have caused the inevitable leakage of electromagnetic waves, leading to serious electromagnetic pollution. To drive this problem, we fabricated Fe3O4 decorated reduced graphene oxide (Fe3O4-rGO) nanocomposites for electromagnetic wave absorption by an in situ reduction process. The as-prepared Fe3O4-rGO showed a typical sandwich-like structure, Fe3O4 nanoparticles were flaky in shape and strongly attached on rGO by C-O-Fe bond. The hysteresis loops revealed the super-paramagnetic behavior of the Fe3O4-rGO nanocomposites at room temperature, which has a considerable contribution to electromagnetic wave absorption. When testing the electromagnetic wave absorption properties, the Fe3O4-rGO nanocomposites exhibited multiple dielectric relaxations and magnetic resonance, which can be ascribed to the well-designed structure, the strong chemical bond between Fe3O4 and rGO, as well as super-paramagnetic characteristics. As a result, the maximum reflection loss reached −49.53 dB at 6.32 GHz for a thickness of 3.4 mm while the highest effective absorption bandwidth was 2.96 GHz. |
| 저자 |
Lei Sun1, Yingying Cai1, Ick Soo Kim1, Qilong Sun2
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| 소속 |
1Shinshu Univ., 2Nantong Univ. |
| 키워드 |
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| E-Mail |
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