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Citation: GAN Zhi-ping, GUAN Jian-guo. Chemical Self-assembly Route to Fabricate Hollow Barium Ferrite Submicrospheres[J]. Acta Physico-Chimica Sinica, ;2006, 22(02): 189-192. doi: 10.3866/PKU.WHXB20060212 shu

Chemical Self-assembly Route to Fabricate Hollow Barium Ferrite Submicrospheres

1.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China

Received Date: 21 July 2005
Available Online: 22 January 2006

A novel strategy of preparing of hollow barium ferrite submicrospheres based on chemical self-assembly technique is described in this paper. That is, using poly (styrene-co-acrylic acid) latexes as template, the chemical interaction between the carboxyl groups on the latex surface and the hydroxyl groups on the surface of barium ferrite precursor prepared in poly-glycol solution results in the formation of poly(styrene-co-acrylic acid)/ barium ferrite precursors core-shell nanocomposite particles. Heat-treatment of the composite particles by upgrading temperature to 750 ℃ leads to hollow barium ferrite submicrospheres with BaFe12O19 crystal phase mainly. The products might find significant applications in such fields as radar absorbers or electro-magneto-rheological fluids.
- Hollow spheres;Barium ferrite;Chemical self-assembly;Poly(styrene-co-acrylic acid);Core-shell nanocomposite particles
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