As the guanidine carbonatesource, t

As the guanidine carbonate
source, the photocatalytic activity could be degraded of MB aqueous solution to 80-85% in 1h under
visible light irradiation. The photocatalytic activity was increased with decreasing the concentration of
guanidine carbonate. In addition, the nitrogen-doped TiO2 powders without irradiation could decolorized
MB aqueous solution from 1×10-5M to