Nanomaterials for photocatalytic and cold plasma-catalytic hydrogenation of CO2 to CO, CH4, and CH3OH

This chapter is focused on heterogeneous hydrogenation of CO2 to value-added products such as CO, CH4, and CH3OH, which have high commercial values compared to other hydrocarbons and oxygenated products. The reaction mechanisms of photocatalytic reduction of CO2 are systematically discussed. The effect of loading of transition metals on photocatalytic material for CO2 reduction has also been analyzed. The recent developments in plasma and plasma-catalytic techniques for CO2 hydrogenation are discussed. Indeed, the reaction mechanism of plasma gas phase chemistry has been discussed with complementary numerical simulation methods.