Review Article
Photocatalytic Based Degradation Processes of Lignin Derivatives
Figure 10
Variation of DC with time of aqueous lignin solution from waste paper water irradiated with UV light (280–420 nm) for different time intervals. The spectra are obtained for sol-gel derived TiO2 nanocrystalline coatings (TiO2-P25-SiO2 + Pt, TiO2-P25-SiO2, TiOSO4−30.6 wt%, ZnO + TiO2-P25-SiO2) [54].