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Issue 19, 2010
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Preparation and characterization of mesoporous SnO2-pillared HTaWO6 with enhanced photocatalytic activity

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Abstract

A porous SnO2-pillared HTaWO6 nanocomposite was assembled from tantalotungstate nanosheets and SnO2 nanoparticles via an exfoliation–restacking route and characterized by powder X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, UV-vis, X-ray photoelectron spectroscopy and N2 adsorption–desorption measurements. It was revealed that the obtained material has a gallery height of about 2 nm, a specific surface area of about 80 m2 g−1 and a wide pore size distribution with two extrema at about 2 and 3 nm. The mesoporous material exhibits enhanced photocatalytic activity in the degradation of MB, attributed to its high surface area, mesoporosity and the electronic coupling between the host and the guest components. A photoexcitation model of the semiconductor–semiconductor pillared photocatalyst was proposed based on the results of XPS and UV-vis.

Graphical abstract: Preparation and characterization of mesoporous SnO2-pillared HTaWO6 with enhanced photocatalytic activity

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Publication details

The article was received on 16 Nov 2009, accepted on 23 Feb 2010 and first published on 15 Mar 2010


Article type: Paper
DOI: 10.1039/B924005E
J. Mater. Chem., 2010,20, 3924-3931

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    Preparation and characterization of mesoporous SnO2-pillared HTaWO6 with enhanced photocatalytic activity

    X. Li, B. Lin, B. Xu, Z. Chen, Q. Wang, J. Kuang and H. Zhu, J. Mater. Chem., 2010, 20, 3924
    DOI: 10.1039/B924005E

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