Preparation of Cu-doped ZnS QDs/TiO2 nanocomposites with high photocatalytic activity

被引：112

作者：

Labiadh, Houcine ^{[1
]}

Ben Chaabane, Tahar ^{[1
]}

Balan, Lavinia ^{[2
]}

Becheik, Nidhal ^{[3
]}

Corbel, Serge ^{[3
]}

Medjahdi, Ghouti ^{[4
]}

Schneider, Raphael ^{[3
]}

机构：

[1] Univ Carthage, Fac Sci Bizerte, Unite Rech Synth & Struct Nanomat UR11ES30, Jarzouna 7021, Tunisia

[2] Inst Sci Mat Mulhouse IS2M, LRC 7228, F-68093 Mulhouse, France

[3] Univ Lorraine, CNRS, LRGP, UMR 7274, F-54001 Nancy, France

[4] Univ Lorraine, CNRS, IJL, UMR 7198, F-54506 Vandoeuvre Les Nancy, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 144卷

关键词：

Cu-doped zinc sulfide; Titanium dioxide; Oxidation; Photocatalysis; QUANTUM DOTS; ODMR INVESTIGATIONS; TIO2; NANOPARTICLES; SEMICONDUCTOR; DEGRADATION; ANATASE; FABRICATION; MECHANISMS; ROUTE;

D O I：

10.1016/j.apcatb.2013.07.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cu-doped ZnS quantum dots (QDs) were synthesized in aqueous solution using 3-mercaptopropionic acid (MPA) as stabilizer. Transmission electron microscopy (TEM) results indicate that the Cu:ZnS nanocrystals distribute uniformly and the size is ca. 2.9 +/- 0.5 nm. These nanocrystals were successfully associated to anatase TiO2 nanoparticles to yield TiO2/Cu:ZnS photocatalysts. Morphological and optical properties of TiO2/Cu:ZnS nanocomposites were characterized by X-ray diffraction (XRD) analysis, TEM, and UV-vis and fluorescence spectroscopies. Photocatalytic activities of TiO2/Cu:ZnS nanocomposites were evaluated by the oxidation of salicylic acid aqueous solutions under UV light irradiation. Enhanced performances compared either to pure TiO2 nanoparticles or to undoped TiO2/ZnS nanocomposites were observed. Effects of the mass ratio of the TiO2 and Cu:ZnS and of the pH of the aqueous solution containing salicylic acid on the photocatalytic activities of TiO2 nanoparticles sensitized with Cu:ZnS QDs were also investigated. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：29 / 35

页数：7

共 60 条

[1] Aqueous Route to Biocompatible ZnSe:Mn/ZnO Core/Shell Quantum Dots Using 1-Thioglycerol As Stabilizer [J].

Aboulaich, Abdelhay ;

Balan, Lavinia ;

Ghanbaja, Jaafar ;

Medjandi, Ghouti ;

Merlin, Christophe ;

Schneider, Raphael .

CHEMISTRY OF MATERIALS, 2011, 23 (16) :3706-3713

[2] Linker-Free Modification of TiO2 Nanorods with PbSe Nanocrystals [J].

Acharya, Krishna P. ;

Alabi, Taiwo R. ;

Schmall, Nicholas ;

Hewa-Kasakarage, Nishshanka N. ;

Kirsanova, Maria ;

Nemchinov, Alexander ;

Khon, Elena ;

Zamkov, Mikhail .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (45) :19531-19535

[3] PHOTOCATALYTIC HYDROGENATION OF CH3CCH WITH H2O ON SMALL-PARTICLE TIO2 - SIZE QUANTIZATION EFFECTS AND REACTION INTERMEDIATES [J].

ANPO, M ;

SHIMA, T ;

KODAMA, S ;

KUBOKAWA, Y .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (16) :4305-4310

[4] Activity of cadmium sulfide photocatalysts for hydrogen production from water: Role of support [J].

Arora, MK ;

Sahu, N ;

Upadhyay, SN ;

Sinha, ASK .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (07) :2659-2665

[5] Synthesis of Coupled Semiconductor by Filling 1D TiO2 Nanotubes with CdS [J].

Banerjee, Subarna ;

Mohapatra, Susanta K. ;

Das, Prajna P. ;

Misra, Mano .

CHEMISTRY OF MATERIALS, 2008, 20 (21) :6784-6791

[6] Role of nanoparticles in photocatalysis [J].

Beydoun, D. ;

Amal, R. ;

Low, G. ;

McEvoy, S. .

JOURNAL OF NANOPARTICLE RESEARCH, 1999, 1 (04) :439-458

[7] Probing the local structure of dilute Cu dopants in fluorescent ZnS nanocrystals using EXAFS [J].

Car, Brad ;

Medling, Scott ;

Corrado, Carley ;

Bridges, Frank ;

Zhang, Jin Z. .

NANOSCALE, 2011, 3 (10) :4182-4189

[8] Determination of kinetic constants of a photocatalytic reaction in micro-channel reactors in the presence of mass-transfer limitation and axial dispersion [J].

Charles, Guillaume ;

Roques-Carmes, Thibault ;

Becheikh, Nidhal ;

Falk, Laurent ;

Commenge, Jean-Marc ;

Corbel, Serge .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2011, 223 (2-3) :202-211

[9] Preparation of a novel TiO2-based p-n junction nanotube photocatalyst [J].

Chen, YS ;

Crittenden, JC ;

Hackney, S ;

Sutter, L ;

Hand, DW .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (05) :1201-1208

[10] Photocatalytic degradation of azo dyes by organic-capped anatase TiO2 nanocrystals immobilized onto substrates [J].

Comparelli, R ;

Fanizza, E ;

Curri, ML ;

Cozzoli, PD ;

Mascolo, G ;

Passino, R ;

Agostiano, A .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 55 (02) :81-91

← 1 2 3 4 5 6 →