Abstract
The recent discovery of uniform mesoporous SBA15 (Santa Barbara amorphous) consisting of long-range channels offers new possibilities in a previously inaccessible size range by inclusion chemistry. SBA15 is an all silica mesoporous molecular sieve possessing one-dimensional hexagonal channels with 6 nm pore diameter. In this work we report on technology and magnetic properties of γ-Fe2O3 nanoparticles entrapped inside SBA15 channels. They have homogeneous distribution throughout the SBA15 and larger particles at the external surface are absent. Both DC magnetization measurements and transmission electron microscopy show a good controlled insertion of γ-Fe2O3 into the host channel.
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