Issue 8, 2013
From the journal:

RSC Advances

Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

Samiha Chaguetmi,abc   Fayna Mammeri,a   Sophie Nowak,a   Philippe Decorse,a   Hélène Lecoq,a   Meriem Gaceur,a   Jamila Ben Naceur,d   Slimane Achour,c   Radhouane Chtouroud  and  Souad Ammar*a  

* Corresponding authors

a Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS), Université Paris Diderot, Sorbonne Paris Cité, UMR CNRS 7086, 75205 Paris Cedex 13, France
E-mail: ammarmer@univ-paris-diderot.fr
Fax: +33 1 5727 7263
Tel: +33 1 5727 8762

b Université 20 Août 1955 de Skikda, Algeria

c Laboratoire de Céramiques, Université Mentouri, Constantine, Algeria

d Laboratoire de Photovoltaïque du Centre des Recherches et des Technologies de l'Energie, 2050 Hammam-Lif, Tunisia

Abstract

ZnS–TiO2 hetero-nanostructured photocatalysts were synthesized by the impregnation of ZnS quantum dots (QDs) on the surface of TiO2 nanofibers. Samples were characterized by X-ray diffraction (XRD), field emission gun scanning electron microscopy (FEG-SEM), X-ray photoelectron spectroscopy (XPS) and UV-visible diffuse reflectance spectroscopy. The photocatalytic activity of the prepared nanostructures was assessed by the photodegradation of methylene blue in an aqueous solution under UV irradiation. It was found that titanium dioxide impregnated with ZnS QDs increased photocatalytic activity. We demonstrated that methylene blue was more efficiently photodegraded by UV irradiation using ZnS-TiO2 heterogeneous photocatalysts than using pristine TiO2 nanofibers.

Graphical abstract: Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

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Article information

DOI
https://doi.org/10.1039/C2RA21684A
Article type
Paper
Submitted
03 Aug 2012
Accepted
07 Dec 2012
First published
03 Jan 2013

RSC Adv., 2013,3, 2572-2580

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Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

S. Chaguetmi, F. Mammeri, S. Nowak, P. Decorse, H. Lecoq, M. Gaceur, J. Ben Naceur, S. Achour, R. Chtourou and S. Ammar, RSC Adv., 2013, 3, 2572 DOI: 10.1039/C2RA21684A

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