A Ruthenium/polyoxometalate for efficient CO2 photoreduction under visible light in diluted CO2

A system containing polyoxometalate ([Co-POM]2-) and [Ru(bpy)3]2+ were constructed for visible-light-induced CO2 conversion to syngas. In diluted CO2, high efficiency of 56.8 mmol g-1 h-1 in syngas production was gained, exceeding that of reported systems with [Ru(bpy)3]2+ participation in similar condition. Mechanism studies revealed efficient photo-induced charge separation is achieved in the system and CO2 reduction tends to occur on [Ru(bpy)3]2+.