Fabrication of nanostructured CuO films by electrodeposition and their photocatalytic properties

- The plausible growth mechanism for the formation of CuO film with star-like structure is proposed for the first time.
- In the process of electrodeposition, the electrodepisition voltage is the key factor to control the surface morphology of CuO films.
- Cu2O works as hard template to control the surface morphologies of CuO.
- As-prepared CuO films whose photo-degradation rate of methylene blue can reach 95% own the best photocatalytic activity compared to CuO powder with nanoscale or general size.