[article] 
inChemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 467–474

Titre :	Visible - light - induced heterostructured Zn – Al – In mixed metal oxide nanocomposite photocatalysts derived from a single precursor
Type de document :	texte imprimé
Auteurs :	Guoli Fan, Auteur ; Wei Sun, Auteur ; Hui Wang, Auteur
Année de publication :	2012
Article en page(s) :	pp. 467–474
Note générale :	Génie chimique
Langues :	Anglais (eng)
Mots-clés :	Indium oxide Zinc Nanocomposite Photocatalyst Visible light
Résumé :	The present work reported the synthesis of visible-light-induced heterostructured Zn–Al–In mixed metal oxide (ZnAlIn-MMO) nanocomposite photocatalysts derived from Zn–Al–In layered double hydroxide precursors. The structural and optical properties of the novel nanomaterials were characterized by powder X-ray diffraction (XRD), 27Al solid-state nuclear magnetic resonance (NMR), transmission electron microscopy (TEM), low temperature nitrogen adsorption–desorption experiments and UV–vis diffuse reflectance spectroscopy. The results reveal that the well-dispersed amorphous In2O3 domains can be intimately attached to ZnO nanocrystallites in the ZnAlIn-MMO nanocomposites, thus forming the heterostructure of mixed metal oxides, and that the band gaps of ZnAlIn-MMO nanomaterials are in the range of 2.50–2.60 eV, indicative of visible light absorption characteristic. Compared to single-phase In2O3 sample, ZnAlIn-MMO nanocomposites exhibited enhanced photocatalytic activity towards the degradation of methylene blue under visible light irradiation. Especially, ZnAlIn-MMO with the Zn/Al/In molar ratio of 6:1:1 had the highest photocatalytic activity, which was attributable to the efficient separation and transportation of photogenerated charge carriers originating from the novel heterostructure and large specific surface area of such nanocomposite. The present finding provides an approach to fabricate new types of visible-light-induced heteronanostructured photocatalysts.
ISSN :	1385-8947
En ligne :	http://www.sciencedirect.com/science/article/pii/S1385894711011120

[article] Visible - light - induced heterostructured Zn – Al – In mixed metal oxide nanocomposite photocatalysts derived from a single precursor [texte imprimé] / Guoli Fan, Auteur ; Wei Sun, Auteur ; Hui Wang, Auteur . - 2012 . - pp. 467–474.
Génie chimique
Langues : Anglais (eng)
in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp. 467–474

Mots-clés :	Indium oxide Zinc Nanocomposite Photocatalyst Visible light
Résumé :	The present work reported the synthesis of visible-light-induced heterostructured Zn–Al–In mixed metal oxide (ZnAlIn-MMO) nanocomposite photocatalysts derived from Zn–Al–In layered double hydroxide precursors. The structural and optical properties of the novel nanomaterials were characterized by powder X-ray diffraction (XRD), 27Al solid-state nuclear magnetic resonance (NMR), transmission electron microscopy (TEM), low temperature nitrogen adsorption–desorption experiments and UV–vis diffuse reflectance spectroscopy. The results reveal that the well-dispersed amorphous In2O3 domains can be intimately attached to ZnO nanocrystallites in the ZnAlIn-MMO nanocomposites, thus forming the heterostructure of mixed metal oxides, and that the band gaps of ZnAlIn-MMO nanomaterials are in the range of 2.50–2.60 eV, indicative of visible light absorption characteristic. Compared to single-phase In2O3 sample, ZnAlIn-MMO nanocomposites exhibited enhanced photocatalytic activity towards the degradation of methylene blue under visible light irradiation. Especially, ZnAlIn-MMO with the Zn/Al/In molar ratio of 6:1:1 had the highest photocatalytic activity, which was attributable to the efficient separation and transportation of photogenerated charge carriers originating from the novel heterostructure and large specific surface area of such nanocomposite. The present finding provides an approach to fabricate new types of visible-light-induced heteronanostructured photocatalysts.
ISSN :	1385-8947
En ligne :	http://www.sciencedirect.com/science/article/pii/S1385894711011120