Jump to main content
Jump to site search

Issue 25, 2011
Previous Article Next Article

A facile heteroaggregate-template route to hollow magnetic mesoporous spheres with tunable shell structures

Author affiliations

Abstract

Uniform hollow magnetic mesoporous silica spheres (HMMS), with Fe3O4 nanoparticles embedded in the mesoporous shell, were successfully prepared by using carboxylic polystyrene latex and Fe3O4 heteroaggregates as the hard template together with a coating of tetraethoxysilane (TEOS) and n-octadecyltrimethoxysilane (C18TMS) mixture. The HMMS outer diameter is about 370 nm and the thickness of the mesoporous shells is around 20 nm. Both the morphology and the thickness of the shell can be easily tuned by tailoring the amount of PS latex and the concentration of ammonia. Meanwhile, the magnetic properties can be slightly changed by adjusting the weight ratios of PS/Fe3O4. In addition, the HMMS demonstrates high drug storage capacity and sustained release properties, demonstrating that this kind of HMMS could be used as a promising material in drug delivery systems.

Graphical abstract: A facile heteroaggregate-template route to hollow magnetic mesoporous spheres with tunable shell structures

Back to tab navigation

Supplementary files

Article information


Submitted
10 Jan 2011
Accepted
04 Apr 2011
First published
13 May 2011

J. Mater. Chem., 2011,21, 9020-9026
Article type
Paper

A facile heteroaggregate-template route to hollow magnetic mesoporous spheres with tunable shell structures

L. Y. Xia, M. Q. Zhang, C. Yuan and M. Z. Rong, J. Mater. Chem., 2011, 21, 9020
DOI: 10.1039/C1JM10126A

Search articles by author

Spotlight

Advertisements