Activating oxygen deficient TiO2 in the visible region by Bi2MoO6 for CO2 photoreduction to methanol

Fast photogenerated charge recombination and inappropriate bandgap for visible light driven charge generation hinders the performance of TiO2. In this study, TiO2 was activated for visible light driven CO2 reduction in the presence of Bi2MoO6 as an electron donor. Furthermore, the introduction of oxygen vacancies resulted in enhanced CO2 adsorption and conversion. The best catalyst gives 27.1 μmol g−1 h−1 methanol formation. DRIFTS was used to explain the methanol formation mechanism on oxygen deficient TiO2.