Photocatalytic Conversion of Lignin in the Presence of Titania and Iron Titanate Films

The photocatalytic conversion of lignin, obtained from camelina (Camelina sativa), over titania and iron titanate films has been studied with analysis of the products using laser desorptiopn/ionization and high-performance liquid chromatography. The photocatalytic reaction over titania films leads to the formation of the mixture of compounds, such as phenol, vanillic acid, resorcinol, and p-coumaryl alcohol. In the presence of iron titanate films, the predominant reaction products are vanillic acid and p-coumaryl. The highest antioxidant activity has been revealed in the case of lignin conversion products obtained over nitrogen-containing iron titanate films under visible light exposure.

Automated summary

The photocatalytic conversion of lignin obtained from camelina over titania and iron titanate films was studied, and the products were analyzed. The reaction over titania films resulted in a mixture of compounds, while iron titanate films predominantly produced vanillic acid and p-coumaryl alcohol. The lignin conversion products obtained over nitrogen-containing iron titanate films exhibited the highest antioxidant activity under visible light exposure.