A Carbon Quantum Dots/Porous InVO4 Microsphere Composite with Enhanced Photocatalytic Activity

A new carbon quantum dots/porous InVO4 (CQDs/p-InVO4) microsphere composite was synthesized by a facile reflux method. The relationship of structure and property of CQDs/p-InVO4 was studied in detail. The results show that the as-prepared composite samples maintain the porous structure of the p-InVO4 microspheres, while CQDs are uniformly loaded on the surface of the p-InVO4 microspheres with an intimate interface. With this unique structure, the as-obtained samples exhibit enhanced photocatalytic degradation ability towards Rhodamine B (RhB) under visible-light irradiation. The synergistic effect of more active sites, increased visible-light absorption, and high separation efficiency of photogenerated electron-hole pairs is believed to be the reason for the enhanced photocatalytic activity.