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Appl. Sci. 2017, 7(11), 1185;

Enhanced Photocatalytic Activity of Iron-Doped ZnO Nanowires for Water Purification

ESYCOM, Université Paris-Est, UPEM, 5 Boulevard Descartes, F- 77420 Champs sur Marne, France
Author to whom correspondence should be addressed.
Received: 2 October 2017 / Revised: 14 November 2017 / Accepted: 14 November 2017 / Published: 17 November 2017
(This article belongs to the Special Issue Nanotechnology in Wastewater Treatment Technology)
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In order to improve the photocatalytic efficiency of ZnO nanowires, iron-doped ZnO nanowires (ZnO:Fe NWs) were successfully synthesized. The morphology, optical properties and photocatalytic performance of ZnO:Fe NWs were studied by scanning electron microscopy (SEM), UV-Visible spectrophotometry and photoluminescence spectroscopy (PL), respectively. The SEM observations showed that the morphology of the ZnO NWs was not modified by iron doping, but the band gap was reduced from 3.29 eV for ZnO NWs to 3.25 eV for ZnO:Fe NWs. This band gap reduction allows the semiconductor to harvest more photons to excite more electrons in the valence band; subsequently, resulting in an improvement of the degradability of the understudied organic dyes: methylene blue (MB), methyl orange (MO), and acid red 14 (AR14). The photocatalytic study showed that the photo-degradation rate of the MB, MO, and AR14 was improved 9%, 20%, and 5% respectively by 1% iron doping in the ZnO NWs. View Full-Text
Keywords: ZnO nanowires; iron doping; water purification; photocatalysis ZnO nanowires; iron doping; water purification; photocatalysis

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Habba, Y.G.; Capochichi-Gnambodoe, M.; Leprince-Wang, Y. Enhanced Photocatalytic Activity of Iron-Doped ZnO Nanowires for Water Purification. Appl. Sci. 2017, 7, 1185.

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