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Issue 38, 2012
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Pore-confined synthesis of mesoporous nanocrystalline La–Ce phosphate films for sensing applications

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Abstract

A new method for the preparation of fluorescent mesoporous La–Ce phosphate films by spin coating is reported here. The structure is obtained by a pore-confined synthesis involving an in situ growth of La0.5Ce0.5PO4 nanoparticles inside the pores of a mesoporous silica thin film and the subsequent partial sintering. The removal of the sacrificial mesoporous silica matrix is achieved by chemical etching, which leaves on the substrate a La0.5Ce0.5PO4 mesoporous film exhibiting good adhesion properties and high fluorescence intensity that can be quenched by a water solution containing organo-phosphate bearing nitrophenyl groups. The sensing capabilities of these materials have been tested for the detection of pesticides in water.

Graphical abstract: Pore-confined synthesis of mesoporous nanocrystalline La–Ce phosphate films for sensing applications

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Publication details

The article was received on 12 Jul 2012, accepted on 07 Aug 2012 and first published on 08 Aug 2012


Article type: Paper
DOI: 10.1039/C2JM34566H
Citation: J. Mater. Chem., 2012,22, 20498-20503
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    Pore-confined synthesis of mesoporous nanocrystalline La–Ce phosphate films for sensing applications

    D. Marongiu, D. Carboni, L. Malfatti and P. Innocenzi, J. Mater. Chem., 2012, 22, 20498
    DOI: 10.1039/C2JM34566H

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