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Preparation of Highly Dispersed Iron Oxide Nanoparticles in Amine-Modified SBA-15

Published online by Cambridge University Press:  15 February 2011

Bing Tan
Affiliation:
University of Kentucky, Lexington, KY 40506-0046, (U.S.A.), Email: srankin@engr.uky.edu; Phone: +1-859-257-9799, Department of Physics and Astronomy, University of Kentucky and Department of Chemical and Materials Engineering
Wentao Xu
Affiliation:
University of Kentucky, Lexington, KY 40506-0046, (U.S.A.), Email: srankin@engr.uky.edu; Phone: +1-859-257-9799, Department of Physics and Astronomy, University of Kentucky and Department of Chemical and Materials Engineering
Alan Dozier
Affiliation:
University of Kentucky, Lexington, KY 40506-0046, (U.S.A.), Email: srankin@engr.uky.edu; Phone: +1-859-257-9799, Department of Physics and Astronomy, University of Kentucky and Department of Chemical and Materials Engineering
Stephen E. Rankin
Affiliation:
University of Kentucky, Lexington, KY 40506-0046, (U.S.A.), Email: srankin@engr.uky.edu; Phone: +1-859-257-9799, Department of Physics and Astronomy, University of Kentucky and Department of Chemical and Materials Engineering
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Abstract

Silica-supported iron oxide nanoparticles are prepared by precipitation within the pores of amine-functionalized SBA-15 silica. The loading of the iron oxide possible by this method is at least 11 wt%. STEM and TEM images show that the supported particles have a uniform diameter (average ∼ 4.0 nm) and are well dispersed. The supported iron oxide nanoparticles are amorphous after calcination at 300°C and, consistent with their nanoscale dimensions, are superparamagnetic at room temperature.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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