Фотокаталітична деградація деяких барвників у присутності механохімічно модифікованих оксидів ванадію і молібдену
Vanadium-molybdenum oxide composition with atomic ratio V/Mo = 0.7:0.3 has been modified by mechanochemical treatment in different media. As a result, changes in the crystal structure, dispersion and surface structure are observed. In general, the properties of the composition are determined by thos...
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| Datum: | 2013 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2013
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| Online Zugang: | https://www.cpts.com.ua/index.php/cpts/article/view/231 |
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| Назва журналу: | Chemistry, Physics and Technology of Surface |
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Chemistry, Physics and Technology of Surface| Zusammenfassung: | Vanadium-molybdenum oxide composition with atomic ratio V/Mo = 0.7:0.3 has been modified by mechanochemical treatment in different media. As a result, changes in the crystal structure, dispersion and surface structure are observed. In general, the properties of the composition are determined by those of the predominant component (V2O5), although the effect of another oxide (MoO3) is revealed. Spectroscopy shows changes in the electronic structure: due to mechanochemical treatment, there is a hypsohromic shift of bands and of the absorption edges of both oxides. Mechanochemical treatment also contributes to the increase in photocatalytic activity of V2O5/MoO3 in the process of dyes degradation in aqueous solution. The samples modified in ethanol possess maximum activity which is associated with an increase in the surface content of the basal plane of vanadium pentoxide. |
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