One-step co-precipitation synthesis of novel BiOCl/CeO2 composites with enhanced photodegradation of rhodamine B
Bismuth oxychloride (BiOCl) and cerium dioxide (CeO2) composites were successfully synthesized via a facile one-step co-precipitation method. The BiOCl/CeO2 composites were observed to be sheet-like structure with some CeO2 nanoparticles distributed on the surface. The BiOCl/CeO2 composites exhibited higher photodegradation performance (98.8%) of rhodamine B (RhB) than pure BiOCl (80.2%) and CeO2 (9.6%) under the solar simulated irradiation. The BiOCl/CeO2 composites with a Bi/Ce molar ratio of 4:1 exhibited the highest photocatalytic performance for RhB, and an optimal RhB degradation efficiency of 98.8% was achieved under the solar simulated irradiation for 60 min and the photocatalytic performance results were compared with other BiOCl composites. The photocatalytic mechanisms of BiOCl/CeO2 composites were discussed by radical trapping experiments and electron spin resonance (ESR), which indicated that the h+ and were dominating radicals for the RhB degradation.