Quantum dot-assembled mesoporous CuO nanospheres based on laser ablation in water

Abstract

A simple and green strategy is presented to fabricate CuO quantum dot-assembled nanospheres based on laser ablation of Cu metal targets in water. The colloidal nanospheres are mesoporous, with an average size of approximately 200 nm. Furthermore, the quantum dots, as a building block, can be easily tuned in size by changing the laser power. Importantly, such mesoporous nanospheres exhibit good photocatalytic activity due to their unique structure.