Exceptional visible-light-driven photocatalytic activity over BiOBr–ZnFe2O4 heterojunctions

The morphology and activity of the BiOBr–ZnFe₂O₄ p–n heterojunctions significantly depend on the BiOBr/ZnFe₂O₄ molar ratio, where the 0.9BiOBr–0.1ZnFe₂O₄ forms fascinating spheres and shows the highest activity in visible-light-driven photodegradation of Rhodamine B.