Band gap engineered, oxygen-rich TiO2 for visible light induced photocatalytic reduction of CO2

Abstract

A facile and dopant-free strategy was employed to fabricate oxygen-rich TiO₂ (O₂–TiO₂) with enhanced visible light photoactivity. Such properties were achieved by the in situ generation of oxygen through the thermal decomposition of the peroxo–titania complex. The O₂–TiO₂ photocatalyst exhibited high photoactivity towards CO₂ reduction under visible light.