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Highly Organized Mesoporous Titania Thin Films Showing Mono-Oriented 2D Hexagonal Channels
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2001
Year
EngineeringNanoporous MaterialMaterial InnovationThin Film Process TechnologyChemistryThin Film ProcessingEthylene OxideMaterials ScienceMaterials EngineeringNanotechnologyTitania NetworkSurface ModificationFunctional NanomaterialsMaterial AnalysisNanomaterialsSurface ScienceThin FilmsHexagonal ChannelsStructure-directing AgentsFunctional MaterialsMaterial Preparation
Structure-directing agents that aid in the formation of ordered, mesostructured titania have been found in poly(ethylene oxide) surfactants. Thermal treatment of the films results in stiffening of the titania network, thereby providing straight channels with elliptical pore cross sections (see Figure). The preparation, characterization, and properties of these films are thoroughly discussed, as well as the possibility of extending the technique for the preparation of 3D structures.