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Synthesis Of Highly Ordered Macroporous Minerals: Extension of the Synthetic Method to Other Metal Oxides and Organic-Inorganic Composites

Published online by Cambridge University Press:  15 February 2011

C.F. Blanford ,
T.N. Do ,
B.T. Holland  and
A. Stein
C.F. Blanford
Affiliation:
Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
T.N. Do
Affiliation:
Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
B.T. Holland
Affiliation:
Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
A. Stein
Affiliation:
Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
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Abstract

The facile synthesis of three-dimensional macroporous arrays of titania, zirconia and alumina was recently reported [1]. The synthesis of these materials has now been extended to the oxides of iron, tungsten, and antimony, as well as a mixed yttrium-zirconium system and organically modi- fied silicates. These materials were characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), X-ray energy dispersive spectrometry (EDS), and powder X-ray diffraction (XRD). Ordered structures of iron, tungsten, and antimony were formed from alkoxide precursors as in the originally reported synthesis, but the template was removed at a lower temperature. Samples of vinyl- and 2-cyanoethyl-modified silicates were formed from a mixture of organotrialkoxysilane and tetraalkoxysilane precursors; the polystyrene template was removed by extraction with a THF/acetone mixture. These results show the ease of extending the original syn- thesis to a wide range of systems. Also, the ability to form homogenous mixed-metal oxides will be important for tailoring the dielectric and photonic properties of these materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 61
Copyright
Copyright © Materials Research Society 1999

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