Layering up: The title nanocomposite shows high anion loading capacity. The demonstration of the assembly of a W7O246− catalyst by this method may provide a general route to the facile and direct fabrication of composite structures with magnetic cores and shells functionalized with various anions (see scheme; LDH=layered double hydroxide).
Pure anatase TiO(2) nanorods with mesopores were synthesized by a simple and low cost microwave-assisted method when tri-block copolymer was used as a structure stabilization agent and TiCl(4) as metal precursor. TEM investigation showed that larger nanorods were assembled by pearl-necklace-shaped nanorods following an oriented attachment mechanism in a specific direction. A proposed hypothetical scheme showed that the formation of lyotropic titania liquid crystal (TLC) serves a key role in the stabilization of nanorods, and the mesopores on nanorods are derived from the vacancy of inter-particles of nanorods and regions lacking inorganic precursors in the TLC structure. Control experiments showed that microwave treatment plays a key role in the maintenance of original morphologies and mesostructures free from destruction even under high temperature calcinations.
Funktionelle Umhüllung: Das im Titel genannte Nanokomposit zeigt eine hohe Kapazität für die Beladung mit Anionen wie dem katalytisch aktiven W7O246−. Die Methode (siehe Schema; LDH=schichtförmiges Doppelhydroxid) bietet einen allgemeinen Zugang zur einfachen und direkten Herstellung von Kern‐Schale‐Strukturen mit magnetischen Kernen und verschiedenartig funktionalisierten Schalen.
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