Visible photocatalytic properties of vanadium doped zinc oxide aerogel nanopowder |
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| Authors: | R Slama F GhribiA Houas C BarthouL El Mir |
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| Affiliation: | a Laboratoire de Physique des Matériaux et des Nanomatériaux appliquée à l'Environnement, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh Manara Zrig, 6072 Gabès, Tunisieb Unité de Recherche Environnement, Catalyse et Analyse des procédés URECAP (UR/99/11-20), Ecole Nationale d'Ingénieurs de Gabès, Université de Gabès, Route de Médenine 6029 Gabès, Tunisiec Institut des NanoSciences de Paris (INSP), UPMC Université Paris 6, CNRS UMR 7588, 140 rue de Lourmel, F-75015 Paris Franced College of Sciences, Department of Physics, Al-Imam Muhammad Ibn Saud University, Riyadh 11623, Saudi Arabia |
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| Abstract: | Vanadium-doped zinc oxide nanoparticles have been synthesized by sol-gel method. In our approach the water for hydrolysis used in the synthesis of nanopowder was slowly released followed by a thermal drying in ethyl alcohol at 250 °C. The obtained nanopowder was characterized by various techniques such as particle size analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and photoluminescence (PL). In the as-prepared state, the powder with an average particle size of 25 nm presents a strong luminescence band in the visible range. From photoluminescence excitation (PLE) the energy position of the obtained PL band depends on the excitation wavelength and this PL band can be also observed under visible excitations. This result is very promising for visible photo catalysis applications, which was confirmed by methylene blue photo-degradation using visible lamp as a light source. |
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| Keywords: | ZnO:V Nanoparticles Sol-gel Aerogel Visible photo-degradation Water treatment Catalyst Photoluminescence |
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