Self-assembled CoTiO3 nanorods with controllable oxygen vacancies for the efficient photochemical reduction of CO2 to CO

CoTiO₃ with oxygen vacancies was used as a cocatalyst for the photochemical reduction of CO₂ to CO. The bond length of the double bond between C and O in CO₂ increases from 1.17 Å to 1.25 Å in the activation step.