Photocatalytic activity of TiO2 nanoparticles sensitized by culnS2 quantum dots / Fengyu Shen in Industrial & engineering chemistry research, Vol. 50 N° 15 (Août 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9131-9137 Titre : Photocatalytic activity of TiO2 nanoparticles sensitized by culnS2 quantum dots Type de document : texte imprimé Auteurs : Fengyu Shen, Auteur ; Wenxiu Que, Auteur ; Yulong Liao, Auteur Année de publication : 2011 Article en page(s) : pp. 9131-9137 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanoparticle Titanium oxide Photocatalysis Résumé : In this paper, p-type CuInS2 quantum dots are synthesized by a solvothermal route and incorporated with n-type TiO2 nanoparticles by a thermal treatment process. Transmission electron microscopy (TEM) results indicate that the CuInS2 quantum dots distribute uniformly and the size is ~3.4 nm. Photocatalytic activities of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are evaluated by the degadation of the methyl orange aqueous solution under ultraviolet (UV) and visible (vis) light irradiation and show an enhanced performance, compared with the pure TiO2 nanoparticles and the pure CuInS2 quantum dots. Microstructural, morphological, and optical properties of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are characterized by X-ray diffraction (XRD) analysis, TEM, and UV-vis absorption spectroscopy. Results indicate that the CuInS2 quantum dots greatly enhance the absorption ofUV and visible light due to the p-n heterojunction being constructed between p-type CuInS2 quantum dots, and n-type TiO2 nanoparticles. Effects of the mass ratio of the TiO2 and CuInS2 and the thermal treatment temperature on the photocatalytic activities of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are also investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395861 [article] Photocatalytic activity of TiO2 nanoparticles sensitized by culnS2 quantum dots [texte imprimé] / Fengyu Shen, Auteur ; Wenxiu Que, Auteur ; Yulong Liao, Auteur . - 2011 . - pp. 9131-9137. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp. 9131-9137 Mots-clés : Nanoparticle Titanium oxide Photocatalysis Résumé : In this paper, p-type CuInS2 quantum dots are synthesized by a solvothermal route and incorporated with n-type TiO2 nanoparticles by a thermal treatment process. Transmission electron microscopy (TEM) results indicate that the CuInS2 quantum dots distribute uniformly and the size is ~3.4 nm. Photocatalytic activities of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are evaluated by the degadation of the methyl orange aqueous solution under ultraviolet (UV) and visible (vis) light irradiation and show an enhanced performance, compared with the pure TiO2 nanoparticles and the pure CuInS2 quantum dots. Microstructural, morphological, and optical properties of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are characterized by X-ray diffraction (XRD) analysis, TEM, and UV-vis absorption spectroscopy. Results indicate that the CuInS2 quantum dots greatly enhance the absorption ofUV and visible light due to the p-n heterojunction being constructed between p-type CuInS2 quantum dots, and n-type TiO2 nanoparticles. Effects of the mass ratio of the TiO2 and CuInS2 and the thermal treatment temperature on the photocatalytic activities of the TiO2 nanoparticles sensitized with the CuInS2 quantum dots are also investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24395861

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