title: Ceria/silicon carbide core-shell materials prepared by miniemulsion technique.
abstract: For the first time we present the synthesis of CeO(2)/Si(O)C core-shell particles prepared by the miniemulsion technique. The Si(O)C core was obtained by means of a polycarbosilane precursor (SMP10), which was subsequently functionalized with ceria and pyrolyzed to the ceramic. The size of these particles could easily be adjusted by varying the surfactants and the surfactant concentration, or by the addition of comonomers. Hence particle sizes ranged from 100 to 1000 nm, tunable by the preparation conditions. All materials were characterized by photon cross correlation spectroscopy, scanning electron microscopy and elemental mapping investigations. Furthermore, first catalytic tests were carried out by temperature programmed oxidation (TPO) of methane, and the activity of this material in lowering the onset temperature of methane combustion by 262 K was documented.
authors: Department of Inorganic Chemistry, Dresden University of Technology, Bergstrasse 66, D-01062 Dresden, Germany.
authors: Lars
authors: L
authors: Borchardt
authors: Martin
authors: M
authors: Oschatz
authors: Robert
authors: R
authors: Frind
authors: Emanuel
authors: E
authors: Kockrick
authors: Martin R
authors: MR
authors: Lohe
authors: Christoph P
authors: CP
authors: Hauser
authors: Clemens K
authors: CK
authors: Weiss
authors: Katharina
authors: K
authors: Landfester
authors: Bernd
authors: B
authors: Büchner
authors: Stefan
authors: S
authors: Kaskel