Magnetically separable ZnFe2O4―graphene catalyst and its high photocatalytic performance under visible light irradiation / Yongsheng Fu in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011)  

Magnetically separable ZnFe2O4―graphene catalyst and its high photocatalytic performance under visible light irradiation [texte imprimé] / Yongsheng Fu, Auteur ; Xin Wang, Auteur . - 2011 . - pp. 7210-7218.
Chimie industrielle
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7210-7218

Mots-clés :	Visible radiation Photocatalysis Catalyst
Résumé :	A magnetically separable ZnFe2O4―graphene nanocomposite photocatalyst with different graphene content was prepared by a facile one-step hydrothermal method. The graphene sheets in this nanocomposite photocatalyst are exfoliated and decorated with ZnFe2O4 nanocrystals. It was found that in the presence of H2O2, the photodegradation rate of methylene blue (MB) was 88% after visible light irradiation for only 5 min and reached up to 99% after irradiation for 90 min. In comparison with pure ZnFe2O4 catalyst, ZnFe2O4―graphene serves a dual function as the catalyst for photoelectrochemical degradation of MB and the generator of a strong oxidant hydroxyl radical (·OH) via photoelectrochemical decomposition of H2O2 under visible light irradiation. ZnFe2O4 nanoparticles themselves have a magnetic property, which makes the ZnFe2O4―graphene composite magnetically separable in a suspension system, and therefore it does not require additional magnetic components as is the usual case.
DEWEY :	660
ISSN :	0888-5885
En ligne :	http://cat.inist.fr/?aModele=afficheN&cpsidt=24239035