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Issue 29, 2011
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Synthesis and photocatalytic activity of iodine-doped ZnO nanoflowers

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Abstract

The paper reports on the preparation and photocatalytic activity of thin films of iodine-doped ZnO nanoflowers deposited on glass substrate using a simple growth process based on hydrothermal synthesis. Addition of iodic acid (5–20 vol%) in the reaction mixture allows the introduction of iodine ions in the form of I or IO3 in the ZnO lattice, as suggested by X-ray photoelectron spectroscopy. Doping ZnO nanostructured films with iodine did not impact their morphology, while it has a significant influence on their optical properties. Indeed, the nanostructured ZnO films, prepared in the presence of iodic acid, display a large increase of the visible luminescence, which reaches a maximum at a concentration of 10 vol%. Finally, the photocatalytic activity of the ZnO nanostructured films for the photodegradation of a model pollutant, rhodamine B, was evaluated under UV and visible light irradiation. While under UV light irradiation, both undoped and iodine-doped ZnO films show a similar behavior, the photocatalytic performance of iodine-doped under visible light irradiation is significantly enhanced in comparison to that of undoped ZnO.

Graphical abstract: Synthesis and photocatalytic activity of iodine-doped ZnO nanoflowers

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Publication details

The article was received on 31 Mar 2011, accepted on 09 May 2011 and first published on 16 Jun 2011


Article type: Paper
DOI: 10.1039/C1JM11351H
Citation: J. Mater. Chem., 2011,21, 10982-10989
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    Synthesis and photocatalytic activity of iodine-doped ZnO nanoflowers

    F. Barka-Bouaifel, B. Sieber, N. Bezzi, J. Benner, P. Roussel, L. Boussekey, S. Szunerits and R. Boukherroub, J. Mater. Chem., 2011, 21, 10982
    DOI: 10.1039/C1JM11351H

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