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Iron Oxide – Doped Mesostructured Silica Films

Published online by Cambridge University Press:  01 February 2011

Ralf Supplit
Affiliation:
Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/ 165, A-1060. Vienna, Austria
Nicola Hüsing
Affiliation:
Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/ 165, A-1060. Vienna, Austria
Christina Fritscher
Affiliation:
Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/ 165, A-1060. Vienna, Austria
Patrycja Jakubiak
Affiliation:
Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/ 165, A-1060. Vienna, Austria Industrial Commodity Science, Poznan University of Economics, Al. Niepodleglosci 10, 60–967, Poznan, Poland
Vadim G. Kessler
Affiliation:
Department of Chemistry, SLU, Box 7050, 75007 Uppsala, Sweden
Gulaim A. Seisenbaeva
Affiliation:
Department of Chemistry, SLU, Box 7050, 75007 Uppsala, Sweden
Sigrid Bernstorff
Affiliation:
Sincrotrone Trieste, Strada Statale 14, Km.163.5, in AREA Science Park 34012 Basovizza/ Trieste, Italy
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Abstract

Poly(ethylene oxide)—poly(propylene oxide)—poly(ethylene oxide) (PEO-PPO-PEO) was reacted with iron ethoxide in a molar ratio of 1:2. This modified surfactant was used as a template for the synthesis of mesostructured, nanocomposite iron oxide-silica films and powders. Grazing incidence (GI)-SAXS measurements of the films showed that depending on the concentration of the surfactant wormhole-like, 2d-centered rectangular, orthorhombic and lamellar nanocomposite structures were formed. Interestingly, the mesoscopic ordering of the orthorhombic and 2d-centered rectangular pore structure is retained even after calcination at 1000 °C for one hour. The influence of heat treatment on the mesostructure was investigated by GI-SAXS, TEM and N2-sorption measurements.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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