Cubic cobalt and zinc co-doped magnetite nanoparticles for persulfate and hydrogen peroxide activation towards the effective photodegradation of Sulfalene

Arezou Fazli (1, 2) , Alireza Khataee (2) , Marcello Brigante (1) , Gilles Mailhot (1)

1 ICCF - Institut de Chimie de Clermont-Ferrand
2 University of Tabriz [Tabriz]

In this work, the cubic cobalt and zinc doped and co-doped magnetite nanocatalysts were synthesized and characterized using different analysis. The so-synthesized photocatalysts were used for the activation of hydrogen peroxide (HP) and persulfate (PS) under UVA irradiation. The integration of Fe2.5Co0.3Zn0.2O4 improved the activation of PS and HP; wherein, the UVA/Fe2.5Co0.3Zn0.2O4/PS process demonstrated higher degradation performance for Sulfalene (SFL) as a veterinary pharmaceutical contaminant in water. Afterward, the effect of different physicochemical parameters was studied and the radicals generated through the process were identified using chemical scavengers. UVA/Fe2.5Co0.3Zn0.2O4/PS process brought about 67% of SFL degradation in real wastewater. Moreover, 85% of TOC removal was achieved within 15 h of the above-mentioned process. Eventually, the phototoxicity of the untreated and treated SFL solution after 120 min of the UVA/Fe2.5Co0.3Zn0.2O4/PS process was studied using Lemna minor aquatic species.

Mots clés: Photocatalysis; Magnetic catalysts; Persulfate activation; Hydroxyl radical; Sulfate radical; Wastewater; Mineralization

Domaines: Chimie

Arezou Fazli, Alireza Khataee, Marcello Brigante, Gilles Mailhot. Cubic cobalt and zinc co-doped magnetite nanoparticles for persulfate and hydrogen peroxide activation towards the effective photodegradation of Sulfalene. Chemical Engineering Journal, 2021, 404, pp.126391. ⟨10.1016/j.cej.2020.126391⟩. ⟨hal-02991547⟩