Fig. 4: Proposed mechanism for photocatalytic CH4 halogenation.
From: Sustainable methane utilization technology via photocatalytic halogenation with alkali halides

a The DFT calculations for the production of CH3Cl in photocatalytic methane halogenation on Cu-doped TiO2. The insets show the optimized structures for each step. b The schematic illustration of the proposed mechanism for photocatalytic methane halogenation over Cu-doped TiO2.