Supraparticles with silica protection for redispersible, calcined nanoparticles
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Updated: Aug 28, 2025
Preparation of Silica Nanoparticles Through Microwave-assisted Acid-catalysis
Published on: December 16, 2013
Susanne Wintzheimer1, Franziska Miller1, Johannes Prieschl1
1University Würzburg, Chair of Chemical Technology of Materials Synthesis Röntgenring 11 97070 Würzburg Germany karl-sebastian.mandel@isc.fraunhofer.de.
Abstract:
Calcination of nanoparticles is always accompanied by undesired sintering. A calcination route preventing hard-agglomeration to bulk lumps, which is transferable to almost any kind of metal oxide nanoparticle, is developed by surrounding targeted nanoparticles by silica nanoparticles within a nanostructured microparticle. After calcination, the desired nanoparticles are regained as a monodisperse sol via silica dissolution.
