Synthesis, characterization, and activity evaluation of DyVO4/g-C3N4 composites under visible-light irradiation / Yiming He in Industrial & engineering chemistry research, Vol. 51 N° 45 (Novembre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14729-14737 Titre : Synthesis, characterization, and activity evaluation of DyVO4/g-C3N4 composites under visible-light irradiation Type de document : texte imprimé Auteurs : Yiming He, Auteur ; Jun Cai, Auteur ; Tingting Li, Auteur Année de publication : 2013 Article en page(s) : pp. 14729-14737 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Visible radiation Composite material Résumé : DyVO4/graphitic carbon nitride (DyVO4/g-C3N4) composite photocatalyst with visible-light response was prepared by a milling and heating treatment method. The synthesized powder was characterized by X-ray diffraction, thermogravimetry/differential thermal analysis, N2 adsorption, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV―vis diffuse reflection spectroscopy. The activity of composite photocatalyst DyVO4/g-C3N4 for photodegradation of rhodamine B is much higher than that of either single-phase g-C3N4 or DyVO4. The obviously increased performance of DyVO4/g-C3N4 is mainly ascribed to the electron-hole separation enhancement at the interface of the two semiconductors, as proven by photoluminescence spectroscopy and photocurrent measurement. In addition, it is found that holes and •O2― are the main active species in the photocatalytic oxidation of RhB solution in the presence of DyVO4/g-C3N4 composite. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620387 [article] Synthesis, characterization, and activity evaluation of DyVO4/g-C3N4 composites under visible-light irradiation [texte imprimé] / Yiming He, Auteur ; Jun Cai, Auteur ; Tingting Li, Auteur . - 2013 . - pp. 14729-14737. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 45 (Novembre 2012) . - pp. 14729-14737 Mots-clés : Visible radiation Composite material Résumé : DyVO4/graphitic carbon nitride (DyVO4/g-C3N4) composite photocatalyst with visible-light response was prepared by a milling and heating treatment method. The synthesized powder was characterized by X-ray diffraction, thermogravimetry/differential thermal analysis, N2 adsorption, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV―vis diffuse reflection spectroscopy. The activity of composite photocatalyst DyVO4/g-C3N4 for photodegradation of rhodamine B is much higher than that of either single-phase g-C3N4 or DyVO4. The obviously increased performance of DyVO4/g-C3N4 is mainly ascribed to the electron-hole separation enhancement at the interface of the two semiconductors, as proven by photoluminescence spectroscopy and photocurrent measurement. In addition, it is found that holes and •O2― are the main active species in the photocatalytic oxidation of RhB solution in the presence of DyVO4/g-C3N4 composite. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26620387

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