Preparation and Properties of Magnetic Hematite Core/Alumina Shell Nanospheres

DOI

10.2991/icmse-16.2016.77How to use a DOI?

Keywords

-Fe2O3, Alumina Nanosphere, Core-shell, Stearic Acid

Abstract

Magnetic core/alumina shell (MFeCA) structured nanospheres were obtained by a hematite core/alumina precursor shell (HFeCAP) nanosphere precursor. A uniform alumina layer was coated on the surface of -Fe2O3 by the self-assembly of a stearic acid/alumina isopropoxide complex. Hematite cores of the nanospheres were then reduced under H2/N2 gas flow to produce the MFeCA nanospheres. Transmission electron microscopy images showed that the products possessed a distinct core-shell structure. N2 sorption measurements showed that the uniform accessible pore size was 4.0 nm. The surface area was 140m2/g and pore volume was 0.22 cm3/g. Saturation magnetization values indicated the product had a high degree of magnetization (50.2 emu/g).

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qing-Tao Fu
AU  - Ting-Ting He
AU  - Rong-Jian Ying
PY  - 2016/12
DA  - 2016/12
TI  - Preparation and Properties of Magnetic Hematite Core/Alumina Shell Nanospheres
BT  - Proceedings of the 4th 2016 International Conference on Material Science and Engineering (ICMSE 2016)
PB  - Atlantis Press
SP  - 464
EP  - 469
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-16.2016.77
DO  - 10.2991/icmse-16.2016.77
ID  - Fu2016/12
ER  -