Jump to main content
Jump to site search

Issue 1, 2005
Previous Article Next Article

The generation of mesostructured crystalline CeO2, ZrO2 and CeO2–ZrO2 films using evaporation-induced self-assembly

Author affiliations

Abstract

Mesostructured thin films of CeO2, ZrO2and CeO2–ZrO2 mixed oxides with highly crystalline pore walls and ordered arrays of mesopores were obtained by a straightforward fabrication process employing evaporation-induced self-assembly (EISA) and a well-designed temperature treatment, taking advantage of a novel type of amphiphilic block copolymer as template. The mesostructure and crystallinity were studied in detail using small-angle and wide-angle X-ray scattering and electron microscopy. The mesostructured CeO2 films are crack-free, possess a final pore size of ca. 10 nm, and the mesopores are surrounded by an almost completely crystalline matrix of nanoparticles of ca. 5–7 nm in size, as revealed by high-resolution electron microscopy. Additionally, the mesoscopic order (bcc structure) shows high thermal stability. The crystallization of the walls is usually accompanied by stresses and strong uniaxial structural shrinkage, which can, however, be significantly diminished by making mixed CeO2–ZrO2 mesostructured systems. Here, the crystallites represent “solid solutions” of both binary oxides and exhibit an even higher thermal stability, while the constituting nanocrystals are smaller compared to the pure CeO2.

Graphical abstract: The generation of mesostructured crystalline CeO2, ZrO2 and CeO2–ZrO2 films using evaporation-induced self-assembly

Back to tab navigation

Publication details

The article was received on 09 Aug 2004, accepted on 23 Sep 2004 and first published on 08 Dec 2004


Article type: Paper
DOI: 10.1039/B412306A
Citation: New J. Chem., 2005,29, 237-242
  •   Request permissions

    The generation of mesostructured crystalline CeO2, ZrO2 and CeO2–ZrO2 films using evaporation-induced self-assembly

    T. Brezesinski, M. Antonietti, M. Groenewolt, N. Pinna and B. Smarsly, New J. Chem., 2005, 29, 237
    DOI: 10.1039/B412306A

Search articles by author

Spotlight

Advertisements