Title :

Preparation and characterization of Ni-doped ZnO-SnO2 nanocomposites: Application in photocatalysis

Author(s) :

Ben Ali, Monaam [Auteur]
Barka-Bouaifel, Fatiha [Auteur]
Sieber, Brigitte [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Elhouichet, Habib [Auteur]
Addad, Ahmed [Auteur]
Boussekey, Luc [Auteur]
Férid, Mokhtar [Auteur]
Boukherroub, Rabah [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Superlattices and Microstructures

Volume number :

91

Pages :

225-237

Publisher :

Elsevier

Publication date :

2016

ISSN :

0749-6036

English keyword(s) :

Hydrothermal synthesis
Ni2+ doping
Photocatalysis
ZnO nanoparticles
ZnO-SnO2 nanocomposites

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

The paper reports on the synthesis of nickel-doped ZnO-SnO₂ nanocomposites with a molar ratio Zn:Sn of 2:1 using the hydrothermal method followed by calcination at 700 °C. The resulting nanocomposites were ...
Show more >The paper reports on the synthesis of nickel-doped ZnO-SnO₂ nanocomposites with a molar ratio Zn:Sn of 2:1 using the hydrothermal method followed by calcination at 700 °C. The resulting nanocomposites were characterized using X-ray diffraction (XRD) patterns, transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and Energy-dispersive X-ray spectroscopy (EDX). The results revealed that the Ni/ZnO-SnO₂ material consists of aggregated cassiterite SnO2 and wurtzite ZnO nanoparticles (NPs) with a size ranging from 14 to 40 nm. Furthermore, they show that Ni adding induces a dominant effect on the optical, structural and morphological properties of ZnO-SnO₂ NPs. The photocatalytic behavior of the synthesized nanocomposites is investigated using rhodamine B (RhB) as model organic pollutant. A maximum degradation efficiency of 96% is achieved under visible light irradiation. While nickel doping did not enhance the photocatalytic activity of ZnO-SnO₂ NPs, the photocatalytic performance of Ni/ZnO-SnO₂ NPs is much higher than that of Ni-doped ZnO NPs. The photodegradation mechanism is believed to occur through photosensitization.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ISEN
Univ. Valenciennes
ENSCL
CNRS
INRA
Institut Catholique Lille
Centrale Lille

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
• Unité Matériaux et Transformations (UMET) - UMR 8207

Submission date :

2019-05-16T17:04:24Z