A Study of the Degradation of LEV by Transparent PVA/NCD-TiO2 Nanocomposite Films with Enhanced Visible-Light Photocatalytic Activity

In recent years, antibiotics (such as levofloxacin (LEV)) have been detected widely in the environment. Semiconductor photocatalysis has recognized a promising technology for removing pollutants this work, nitrogen and carbon codoped titanium dioxide nano-catalyst (NCD-TiO2) was immobilized polyvinyl alcohol (PVA) matrix to form PVA/NCD-TiO2 films through solution casting thermal treatment, which exhibited good photocatalytic efficiency LEV degradation. The results showed that about 42% can be degraded after 2 h presence of nanocomposite film (the weight ratio NCD-TiO2 PVA is 8% treatment 120 °C) under visible light. Moreover, possible pathways degradation according intermediates are proposed, provide insight into mechanism by using films. Finally, synthesized excellent reusability stability photocatalysis. This work provides fundamental support design high-stability, photocatalyst practical application.