Plasma-enhanced direct conversion of CO2 to CO over oxygen-deficient Mo-doped CeO2

Abstract

Plasma CO₂ splitting to CO over oxygen-deficient Mo-doped CeO₂ under mild conditions was investigated for the first time, showing ∼20 times higher CO₂ conversion compared to pure CeO₂, which can be attributed to the increased oxygen vacancies (V_O) and the formation of Ce³⁺–V_O–Mo on the catalyst surface. Importantly, V_O sites showed excellent catalytic stability.