Synthesis of cellular inorganic films from self‐organized Media

Cellular and honeycomb structures of inorganic materials are of interest for applications requiring, e.g., catalyst supports or heat‐resistant membranes. The synthesis fo cellular films from solvent‐extracted metal‐ion‐containing microemulsions (the Figure shows a resulting hollow spherical shell of calcium carbonate) is extended here to Fe III , Mn III/IV , and Co III oxides. The preparation is detailed and the mechanism of formation discussed. magnified image