Abstract
In this study, two typical refractory organic pollutants, methylene blue (MB) and tetracycline (TC) was effectively degraded under visible-light irradiation catalyzed by Zn/Fe mixed metal oxide (Zn/Fe-MMO) nanocomposite, which derived from the high-temperature calcination of Zn/Fe layered double hydroxide (Zn/Fe-LDH). The Zn/Fe-MMO was composed of wurzite ZnO phases and spinel-structured ZnFe2O4. The Zn/Fe-MMO exhibited superior photocatalytic activity than Zn/Fe-LDH precursor owing to the better crystallinity, broader visible light adsorption, and higher photo-generated electron-hole pairs separation efficiency. Simple assembling method, high photocatalytic activity to the degradation of organic pollutants and good reusability make Zn/Fe-MMO has great potential in practical wastewater treatment.
Simple assembling method, high photocatalytic activity typical refractory organic pollutants removal and good reusability. [Display omitted]
•Zn/Fe-MMO was prepared by facile co-precipitation and high temperature calcination.•Zn/Fe-MMO exhibited better photocatalytic activity to dye (MB) and antibiotic (TC) degradation.•High photostability and repeatability was achieved under visible-light irradiation.•O2− and OH acted as the predominant active species.•Reaction mechanism for Pollutant degradation over Zn/Fe-MMO was illustrated.