Flower-like MWCNTs/Bi2O2CO3 composites with enhanced photocatalytic activity under simulated solar light irradiation

• Synthesis of MWCNTs/Bi2O2CO3 composites via a simple solvothermal method.
• MWCNTs/Bi2O2CO3 composites consist of flower-like Bi2O2CO3 microspheres and MWCNTs.
• High photocatalytic activities for the degradation of organic pollutants under simulated solar light irradiation.

Flower-like MWCNTs/Bi2O2CO3 composites composed of Bi2O2CO3 nanosheets and MWCNTs were prepared by a simple solvothermal method. These composites all showed higher photocatalytic activities than pure Bi2O2CO3 for the degradation of RhB or 4-CP under simulated solar light irradiation. Among them, the MWCNTs/Bi2O2CO3 composite with 3 wt% MWCNTs (M/B-3%) exhibited the highest photocatalytic activity and excellent stability. The enhanced photocatalytic performance could be attributed to the enhanced light absorption and efficient separation of photogenerated charge carriers.

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