[Zurück]

J. Yang, L. Lukashuk, J. Akbarzadeh, M. Stöger-Pollach, H. Peterlik, K. Föttinger, G. Rupprechter, U. Schubert:
"Different synthesis protocols for Co₃O₄-CeO₂ catalysts. Part 1: Influence on the morphology on the nanoscale";
Chemistry - A European Journal, 21 (2015), 2; S. 885 - 892.

Co₃O₄-modified CeO₂ (Co/Ce 1:4) was prepared by a combination of sol-gel processing and solvothermal treatment. The distribution of Co was controlled by means of the synthesis protocol to yield three different morphologies, namely, Co₃O₄ nanoparticles located on the surface of CeO₂ particles, coexistent Co₃O₄ and CeO₂ nanoparticles, or Co oxide structures homogeneously distributed within CeO₂. The effect of the different morphologies on the properties of Co₃O₄-CeO₂ was investigated with regard to the crystallite phase(s), particle size, surface area, and catalytic activity for CO oxidation. The material with Co₃O₄ nanoparticles finely dispersed on the surface of CeO₂ particles had the highest catalytic activity.

catalytic materials; cerium; cobalt; nanoparticles; sol-gel processes

http://dx.doi.org/10.1002/chem.201403636