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Issue 10, 2010
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Crystalline nanoporous metal oxide thin films by post-synthetic hydrothermal transformation: SnO2 and TiO2

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Abstract

Nanostructured and nanoporous metal oxide thin films are rarely accessible by standard synthetic approaches but highly desired for many applications, e.g. as electrodes, transparent conducting coatings, sensors or surface catalysts. Template based sol–gel chemistry combined with post-synthetic hydrothermal treatment allows now the synthesis of nanocrystalline mesostructured porous thin films of metal oxides, e.g. tin oxide and titania. Even in cases where the crystallization cannot be induced highly stable thin films can be achieved, e.g. niobium oxide thin films. We demonstrate how the size of the nanocrystallites influences and stabilizes the mesostructure at temperatures as low as 100 °C and thereby in the case of titania or tin dioxide even prevents it from deterioration at higher temperatures up to 400–600 °C.

Graphical abstract: Crystalline nanoporous metal oxide thin films by post-synthetic hydrothermal transformation: SnO2 and TiO2

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Publication details

The article was received on 02 Feb 2010, accepted on 12 May 2010 and first published on 15 Jul 2010


Article type: Communication
DOI: 10.1039/C0NR00079E
Citation: Nanoscale, 2010,2, 2054-2057
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    Crystalline nanoporous metal oxide thin films by post-synthetic hydrothermal transformation: SnO2 and TiO2

    S. Shao, M. Dimitrov, N. Guan and R. Köhn, Nanoscale, 2010, 2, 2054
    DOI: 10.1039/C0NR00079E

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