| Titre : | Efficient methylene blue removal over hydrothermally synthesized starlike BiVO4 (2009) |
| Auteurs : | Songmei Sun, Auteur ; Wenzhong Wang, Auteur ; Lin Zhou, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N°4, Février 2009) |
| Article en page(s) : | pp. 1735–1739 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Starlike BiVO4 Water/ethanol mixture Ethylenediamine tetraacetic acid |
| Résumé : | Nanoplate-stacked starlike BiVO4 products have been successfully synthesized by a hydrothermal method, where a water/ethanol mixture was the solvent and ethylenediamine tetraacetic acid (EDTA) was the chelating agent. The molar ratio of EDTA to Bi3+ was found to play an important role in the formation of this morphology. These starlike BiVO4 samples exhibited a high visible-light-driven photocatalytic efficiency. For the degradation of methylene blue (MB) under visible-light irradiation (λ > 420 nm), about 91% of the MB was degraded within 25 min. This is much higher than for BiVO4 samples prepared by solid-state reaction (bulk BiVO4) and other hydrothermal synthesis methods. The reasons for the differences in the photocatalytic activities of these BiVO4 samples were further investigated. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie801516u |
