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

Abstract

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.