Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10640222 | Materials Science and Engineering: B | 2005 | 8 Pages |
Abstract
Reverse micelle and hydrolysis have been combined to synthesize anatase-titania coated nickel ferrite nanoparticles of size 10-20Â nm. The paper describes the magnetic behavior studied by superconducting quantum interference device and the photocatalytic activity. The anatase TiO2-coated NiFe2O4 nanoparticles retain the characteristics of uncoated nanocrystalline nickel ferrites; superparamagnetism (absence of hysteresis, remanence and coercivity at 300Â K) and non-saturation of magnetic moments at high field. The magnetic measurements indicate reduction of magnetization of the anatase TiO2-coated NiFe2O4 nanoparticles compared with the uncoated NiFe2O4 nanoparticles because of the contribution of the volume of the non-magnetic coating layer to the total sample volume. Anatase TiO2-coated NiFe2O4 nanoparticles exhibit photocatalytic nature that can be exploited for antimicrobial activity.
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Authors
S. Rana, R.S. Srivastava, M.M. Sorensson, R.D.K. Misra,