Activating oxygen deficient TiO 2 in the visible region by Bi 2 MoO 6 for CO 2 photoreduction to methanol.

Fast photogenerated charge recombination and inappropriate bandgap for visible light driven charge generation hinders the performance of TiO 2 . In this study, TiO 2 was activated for visible light driven CO 2 reduction in the presence of Bi 2 MoO 6 as an electron donor. Furthermore, the introduction of oxygen vacancies resulted in enhanced CO 2 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 TiO 2 .