Figure 4
From: Mechano-synthesized orange TiO2 shows significant photocatalysis under visible light
Absorbance of MB solution measured at 664 nm as a function of light irradiation time. (a) TiO2 milled with and without melamine. The wavelength of irradiated light is 450 nm. Absorbance of MB solution for different excitation wavelengths (b) with TiO2 and (c) without TiO2. The TiO2 photocatalyst was prepared by milling TiO2 at 120 min and 500 rpm with melamine (5 wt%) and without melamine.
