Efficient photocatalytic degradation of Rhodamine B catalyzed by SrFe2O4/g-C3N4 composite under visible light

Visible light-responsive composite photocatalysts of strontium ferrite/graphitic carbon nitride, SrFe2O4/g-C3N4, were simply synthesized by ultrasonically dispersing and refluxing the mixture of SrFe2O4 and g-C3N4. The as-prepared composites were well characterized and their catalytic performances for photo catalytic Rhodamine B degradation were evaluated under visible-light irradiation. The composites catalysts exhibited remarkably higher activities than both pristine SrFe2O4 and g-C3N4 endowed by synergetic effect between the two moieties. Especially, the most efficient catalyst SrFe2O4/g-C3N4 (1:1) with 1:1 mass ratio of SrFe2O4 to g-C3N4 can completely degradate RhB in 100 mL aqueous solution with concentration of 10 mg/L in 40 min. Furthermore, the catalyst can be facilely separated by external magnet for recycling and almost no decrease in its catalytic activity was observed after five runs reuse. (C) 2019 Elsevier Ltd. All rights reserved.