Core–shell structured BiOCl@polydopamine hierarchical hollow microsphere for highly efficient photocatalysis

Core–shell structured [email protected] ([email protected]) hierarchical hollow microspheres were synthesized as an efficient photocatalyst towards degradation of pollutants under visible light. As-prepared [email protected] features hierarchical hollow microsphere structure formed by aggregated BiOCl nanosheets with PDA thin film coated on their surface. It exhibits excellent photocatalytic activity and recycling durability for photodegradation of pollutants under visible light illumination. Detail investigation suggests that the introduction of PDA significantly improves the specific surface areas and enhances the light absorption and interfacial separation, together to improve the photocatalytic efficiency. This work may provide a valuable strategy for the synthesis of highly efficient photocatalysts.