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Issue 19, 2010
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Nanorods assembly of mesoporous boehmite film on glass: an efficient catalyst for permanganate reduction to MnO2 nanoparticles

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Abstract

Nanorods assembly of mesoporous boehmite (γ-AlOOH) films of thickness ∼2 μm with a preferential crystallographic growth along <020> have been synthesized. The films have been deposited on glass substrates by dip-coating using aluminium tri-sec-butoxide derived AlOOH sols in presence of CTAB. CTAB allows assembly of colloidal particles (Al–O polynuclear species) into a rod shape and can be removed at 300 °C. TEM study of the heat-treated (300 °C) films reveals that the rod like (diameter 2.5 ± 0.5 nm) boehmite nanocrystals are assembled in a disorder manner. BET analysis shows that the film has a surface area of 162 m2 g−1 with an average pore size of 3.3 nm. The average pore size of the film is also measured by SAXS and found to be 2.9 nm. These films show excellent catalytic activities in the reduction of KMnO4 to MnO2 nanoparticles (30–40 nm) in aqueous solution (pH ∼7.0) at room temperature.

Graphical abstract: Nanorods assembly of mesoporous boehmite film on glass: an efficient catalyst for permanganate reduction to MnO2 nanoparticles

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Publication details

The article was received on 11 Jan 2010, accepted on 01 Mar 2010 and first published on 31 Mar 2010


Article type: Paper
DOI: 10.1039/C000519C
Citation: J. Mater. Chem., 2010,20, 3890-3894
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    Nanorods assembly of mesoporous boehmite film on glass: an efficient catalyst for permanganate reduction to MnO2 nanoparticles

    A. Dandapat and G. De, J. Mater. Chem., 2010, 20, 3890
    DOI: 10.1039/C000519C

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