Visible light photocatalytic properties of novel molybdenum treated carbon nanotube/titania composites

摘要

Two types of molybdenum-carbon nanotubes and molybdenum treated carbon nanotubes/titania composites were prepared using a sol-gel method. These composites were characterized comprehensively by the Brauer-Emett-Teller (BET) surface area, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis absorption spectroscopy. It was found that the photocatalytic degradation of a methylene blue solution could be attributed to the combined effects caused by the photo-degradation of titania, the electron assistance of carbon nanotube network, and the enhancement of molybdenum. The proposed redox mechanism of the photodegradalion of methylene blue on Mo-CNT/TiO_2 composites is suggested.