High photocatalytic performance over ultrathin 2D TiO₂ for CO₂ reduction to alcohols

We report a noble-metal-free photocatalyst, ultrathin TiO2 with atomic layer thickness, which is a potential catalyst for CO2 photoreduction. An excellent liquid-product yield of 463.9 mu mol g(cat)(-1) in 8 h with 98% selectivity to alcohols was achieved, owing to sufficient surface defects favoring CO2 adsorption/activation.