Visible-light photocatalytic degradation of water-soluble polyvinyl alcohol in aqueous solution by Cu2O@TiO2: Optimization of conditions, mechanisms and toxicity analysis

Synthesis of hollow sphere structured TiO2 loaded with Ag2O and its photocatalytic activity

“…Although TiO 2 has attracted significant attention for its application as a photocatalyst in water decomposition owing to its high catalytic activity, excellent stability, and its nontoxicity, [1][2][3] the rapid recombination of charge carriers and short-wavelength excitations have hindered its practical applications. [4][5][6] Similar to most semiconductor materials, the high recombination rates between the electrons and holes in TiO 2 generate low quantum yields. 7 Since the photocatalytic process mostly occurs on the catalyst surface, a large specific surface area is thus essential for enhancing the photocatalytic performance of TiO 2 .…”