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Article Dans Une Revue Applied Sciences Année : 2017

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

Résumé

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.
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Origine : Publication financée par une institution
licence : CC BY - Paternité

Dates et versions

hal-01721129 , version 1 (04-09-2023)

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Paternité

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Yamina Ghozlane Habba, Martine Capochichi-Gnambodoe, Yamin Leprince-Wang. Enhanced Photocatalytic Activity of Iron-Doped ZnO Nanowires for Water Purification. Applied Sciences, 2017, 7 (12), pp.1-10. ⟨10.3390/app7111185⟩. ⟨hal-01721129⟩
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