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- Title
Hierarchical Fe<sub>3</sub>O<sub>4</sub>@TiO<sub>2</sub> Yolk-Shell Microspheres with Enhanced Microwave-Absorption Properties.
- Authors
Liu, Jiwei; Xu, Junjie; Che, Renchao; Chen, Huajun; Liu, Mengmei; Liu, Zhengwang
- Abstract
A facile and efficient strategy for the synthesis of hierarchical yolk-shell microspheres with magnetic Fe3O4 cores and dielectric TiO2 shells has been developed. Various Fe3O4@TiO2 yolk-shell microspheres with different core sizes, interstitial void volumes, and shell thicknesses have been successfully synthesized by controlling the synthetic parameters. Moreover, the microwave absorption properties of these yolk-shell microspheres, such as the complex permittivity and permeability, were investigated. The electromagnetic data demonstrate that the as-synthesized Fe3O4@TiO2 yolk-shell microspheres exhibit significantly enhanced microwave absorption properties compared with pure Fe3O4 and our previously reported Fe3O4@TiO2 core-shell microspheres, which may result from the unique yolk-shell structure with a large surface area and high porosity, as well as synergistic effects between the functional Fe3O4 cores and TiO2 shells.
- Publication
Chemistry - A European Journal, 2013, Vol 19, Issue 21, p6746
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201203557