Photocatalytic activity of TiO2 nanofibers sensitized with ZnS quantum dots

被引：48

作者：

Chaguetmi, Samiha ^{[1
,2
,3
]}

Mammeri, Fayna ^{[1
]}

Nowak, Sophie ^{[1
]}

Decorse, Philippe ^{[1
]}

Lecoq, Helene ^{[1
]}

Gaceur, Meriem ^{[1
]}

Ben Naceur, Jamila ^{[4
]}

Achour, Slimane ^{[3
]}

Chtourou, Radhouane ^{[4
]}

Ammar, Souad ^{[1
]}

机构：

[1] Univ Paris Diderot, UMR CNRS 7086, F-75205 Paris 13, France

[2] Univ 20 Aout 1955 Skikda, Skikda, Algeria

[3] Univ Mentouri, Lab Ceram, Constantine, Algeria

[4] Ctr Rech & Technol Energie, Lab Photovolta, Hammam Lif 2050, Tunisia

来源：

RSC ADVANCES | 2013年 / 3卷 / 08期

关键词：

TRIBOLOGICAL BEHAVIOR; NANOTUBE ARRAYS; NANOPARTICLES; DEGRADATION; FABRICATION; TITANIA; NANOWIRES; SURFACE; OXYGEN; WATER;

D O I：

10.1039/c2ra21684a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：2572 / 2580

页数：9

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