Title :

Development of a TiO2/sepiolite photocatalyst for the degradation of a persistent organic pollutant in aqueous solution

Author(s) :

Bakhtiar, Amina [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran] [USTO MB]
Bouberka, Zohra [Auteur]
Université des sciences et de la Technologie d'Oran Mohamed Boudiaf [Oran] [USTO MB]
Roussel, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Volkringer, Christophe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
OUDDANE, Baghdad [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Pierlot, Christel [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Maschke, Ulrich [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Nanomaterials (Basel, Switzerland)

Volume number :

12

Pages :

3313

Publication date :

2022-08-23

ISSN :

2079-4991

English keyword(s) :

nanoparticles
photocatalysis
sol-gel method
sepiolite
titanium dioxyde

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

A clay-based TiO2 nanocomposite material was synthesized by a facile method to investigate its structure and photocatalytic efficiency. The supported TiO2 nanoparticles were generated from a sol-gel method, and subsequently, ...
Show more >A clay-based TiO2 nanocomposite material was synthesized by a facile method to investigate its structure and photocatalytic efficiency. The supported TiO2 nanoparticles were generated from a sol-gel method, and subsequently, mixed with a suspension of sepiolite. The material was recovered in powder form (Mc-80), and then calcined to properly arrange the crystal lattice of the TiO2 particles for use in heterogeneous photocatalysis (Mc-80-500). The powder X-ray diffractogram of Mc-80-500 reveals a dispersion of anatase and rutile phase TiO2 particles on the clay surface, exhibiting a size in the order of 4-8 nm. TEM images of Mc-80-500 confirmed the presence of isolated TiO2 beads on the surface of the fibrous sepiolite. The specific surface area of Mc-80-500 is larger than that of raw sepiolite and that of free TiO2 nanoparticles. Mc-80-500 was found to be more efficient in heterogeneous photocatalysis compared to other TiO2 materials based on sepiolite. A total depollution of a reactive dye (Orange G) was achieved after 1h irradiation time, which is relatively quick compared to previous reports. The photocatalyst material can be washed with distilled water without chemical additives or calcination, and can be reused several times for photocatalysis without loss of efficiency.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2022-10-04T08:46:26Z
2022-10-08T12:26:00Z