Meeting the Industrial Challenges of CO 2 Photocatalytic Reduction: Moving From Molybdenum Disulfides to Oxysulfides Based Materials?

Reducing CO 2 emissions is one of the greatest challenges of the century. Among the means employed to tackle CO 2 emissions, the photocatalytic conversion of CO 2 is an appealing way to valorize CO 2 since it uses the sun energy, which is abundant. However, nowadays, the best photocatalytic systems still report too low efficiencies, and use expensive materials, so they cannot be readily industrialized for use at large scale. In this report, we first highlight general industrial and process challenges (including operating conditions). Then, focusing on MoS 2 /TiO 2 heterojunction systems, we analyze advantages and limitations of such systems and open perspectives on Mo oxysulfides supported on TiO 2 discussing their potential to reach higher efficiency for CO 2 photoconversion.