Efficient methylene blue removal over hydrothermally synthesized starlike BiVO4 / Songmei Sun in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1735–1739 Titre : Efficient methylene blue removal over hydrothermally synthesized starlike BiVO4 Type de document : texte imprimé Auteurs : Songmei Sun, Auteur ; Wenzhong Wang, Auteur ; Lin Zhou, Auteur Année de publication : 2009 Article en page(s) : pp. 1735–1739 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : 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 [article] Efficient methylene blue removal over hydrothermally synthesized starlike BiVO4 [texte imprimé] / Songmei Sun, Auteur ; Wenzhong Wang, Auteur ; Lin Zhou, Auteur . - 2009 . - pp. 1735–1739. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1735–1739 Mots-clés : 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

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