Iron oxide doped silica films and powders with highly ordered mesostructures of extraordinary temperature stability (up to 1000 °C) and iron loading of up to 6 atom% were produced by the use of novel iron alkoxide-coordinated surfactants. Wormhole-like, 2d-centered rectangular, orthorhombic and lamellar mesostructures were obtained by variation of the molar ratios of the metal–surfactant complexes. The influence of a subsequent heat treatment was studied by GI-SAXS, TEM, XRD, and nitrogen sorption techniques. The molecular composition of the films was studied by XPS and EXAFS.
Synthesis and characterization of orthorhombic, 2d-centered rectangular and lamellar iron oxide doped silica films
GROSS, SILVIA
2006
Abstract
Iron oxide doped silica films and powders with highly ordered mesostructures of extraordinary temperature stability (up to 1000 °C) and iron loading of up to 6 atom% were produced by the use of novel iron alkoxide-coordinated surfactants. Wormhole-like, 2d-centered rectangular, orthorhombic and lamellar mesostructures were obtained by variation of the molar ratios of the metal–surfactant complexes. The influence of a subsequent heat treatment was studied by GI-SAXS, TEM, XRD, and nitrogen sorption techniques. The molecular composition of the films was studied by XPS and EXAFS.
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