Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 445882
Title Towards mesoporous Keggin-type polyoxometalates –systematic study on organic template removal
Author(s) Lunkenbein, T.; Kamperman, M.M.G.; Schieder, M.; With, S.; Li, Z.; Sai, H.; Forster, S.; Wiesner, U.; Breu, J.
Source Journal of Materials Chemistry. A, Materials for energy and sustainability 1 (2013). - ISSN 2050-7488 - p. 6238 - 6248.
DOI https://doi.org/10.1039/c3ta10333a
Department(s) Physical Chemistry and Colloid Science
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) transition-metal oxides - catalytic-properties - building-blocks - acid catalysts - silica - molybdenum - mesostructures - nanocomposite - architectures - tungsten
Abstract Here, we present systematic studies on the removal of the polymer template from inverse hexagonally ordered poly(butadiene-block-2-dimethylaminoethyl methacrylate)–phosphomolybdic acid (H3PMo12O40) nanocomposites. Highly ordered mesophases are obtained via an evaporation-induced self-assembly process. Different techniques are used to remove the organic template: direct calcination in air, a two-step heat treatment ((1) argon atmosphere and (2) oxidative atmosphere), and a combination of heat and plasma treatment. Our studies show that direct calcination in air and two-step heat treatment lead to a collapse of mesostructure before complete carbon removal is accomplished. In contrast, plasma etching of heat treated ultra-microtomed samples results in hexagonally ordered porous nanofilms
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