Solar photocatalysis of TiO2 supported natural palygorskite nanofibers elaborated by a one_pot mechanochemical route - CNRS - Centre national de la recherche scientifique
Journal Articles Journal of Minerals and Materials Characterization and Engineering Year : 2022

Solar photocatalysis of TiO2 supported natural palygorskite nanofibers elaborated by a one_pot mechanochemical route

Abstract

This study reports the successful synthesis of supported TiO2_Palygorskite nanocomposites by a one-pot dry mechanochemical route. Indeed, the elaboration procedure involved an in-situ reaction between accessories carbonates present in raw fibrous palygorskite clay and titanyl sulfate (TiOSO4) precursor under variable grinding conditions, essentially ball/solid matter mass ratio and rotation velocity. This yielded after air annealing at 600°C for 1 h to the immobilization of anatase TiO2 nanoparticles (≈ 8 nm of average size) as evidenced by XRD and TEM analyses. Once the conditions of elaboration were optimised, the photocatalytic properties were evaluated under 3 conditions: artificial UV radiation, artificial solar radiation (UV+visible range) and under dynamic solar illumination taking into account the discontinuities of the solar resource. The results allowed the estimation and comparison of the catalyst's capabilities and showed its ability to work under natural irradiation. The so developed supported photocatalysts TiO2/Palygorskite exhibited a good activity towards the removal of Orange G (OG) dye from aqueous media under artificial UV and natural solar radiations.
Fichier principal
Vignette du fichier
PHAL88.pdf (1.77 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03735854 , version 1 (22-07-2022)

Identifiers

Cite

Omar Lakbita, Benaissa Rhouta, Vincent Goetz, Francis Maury, Gaël Plantard, et al.. Solar photocatalysis of TiO2 supported natural palygorskite nanofibers elaborated by a one_pot mechanochemical route. Journal of Minerals and Materials Characterization and Engineering, 2022, 10 (3), pp.103020. ⟨10.4236/jmmce.2022.103020⟩. ⟨hal-03735854⟩
79 View
40 Download

Altmetric

Share

More