title: Quaternary nanocomposites consisting of graphene, Fe3O4@Fe core@shell, and ZnO nanoparticles: synthesis and excellent electromagnetic absorption properties.
abstract: This paper presents for the first time a successful synthesis of quaternary nanocomposites consisting of graphene, Fe(3)O(4)@Fe core/shell nanopariticles, and ZnO nanoparticles. Transmission electron microscopy measurements show that the diameter of the Fe(3)O(4)@Fe core/shell nanoparitcles is about 18 nm, the Fe(3)O(4) shell's thickness is about 5 nm, and the diameter of ZnO nanoparticles is in range of 2-10 nm. The measured electromagnetic parameters show that the absorption bandwidth with reflection loss less than -20 dB is up to 7.3 GHz, and in the band range more than 99% of electromagnetic wave energy is attenuated. Moreover, the addition amount of the nanocomposites in the matrix is only 20 wt %. Therefore, the excellent electromagnetic absorption properties with lightweight and wide absorption frequency band are realized by the nanocomposites.
authors.affiliation: College of Science, Harbin Engineering University, Beijing 100081, China.
authors.forename: Yu-Lan
authors.initials: YL
authors.lastname: Ren
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Wu
authors.forename: Ming-Ming
authors.initials: MM
authors.lastname: Lu
authors.forename: Yu-Jin
authors.initials: YJ
authors.lastname: Chen
authors.forename: Chun-Ling
authors.initials: CL
authors.lastname: Zhu
authors.forename: Peng
authors.initials: P
authors.lastname: Gao
authors.forename: Mao-Sheng
authors.initials: MS
authors.lastname: Cao
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Li
authors.forename: Qiu-Yun
authors.initials: QY
authors.lastname: Ouyang