Issue 18, 2012

Hierarchical magnetic yolk–shell microspheres with mixed barium silicate and barium titanium oxide shells for microwave absorption enhancement

Abstract

A facile “hydrothermal-assisted crystallization” route for the synthesis of hierarchical magnetic yolk–shell microspheres with mixed barium silicate and barium titanium oxide shells has been developed. Various yolk–shell microspheres with different shell thicknesses and core sizes have been successfully synthesized by controlling the synthetic parameters. The as-synthesized yolk–shell microspheres possess high magnetization, tailored shells, large specific surface area and high porosity, and are demonstrated to be attractive candidate materials for microwave absorption enhancement. Moreover, a possible formation mechanism based on the sacrificial-templating crystallization, dissolution–precipitation and in situ transformation processes is proposed.

Graphical abstract: Hierarchical magnetic yolk–shell microspheres with mixed barium silicate and barium titanium oxide shells for microwave absorption enhancement

Supplementary files

Article information

Article type
Paper
Submitted
03 Feb 2012
Accepted
06 Mar 2012
First published
07 Mar 2012

J. Mater. Chem., 2012,22, 9277-9284

Hierarchical magnetic yolk–shell microspheres with mixed barium silicate and barium titanium oxide shells for microwave absorption enhancement

J. Liu, J. Xu, R. Che, H. Chen, Z. Liu and F. Xia, J. Mater. Chem., 2012, 22, 9277 DOI: 10.1039/C2JM30669G

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