Synergetic catalysis of a cobalt-based coordination polymer for selective visible-light driven CO 2 -to-CO conversion.

Herein, based on the strategy of synergetic catalysis, we report a cobalt-based coordination polymer PEI 6 -Co. As a heterogeneous catalyst, PEI 6 -Co shows a selectivity of 95% and a yield of 1170 mmol g -1 for visible-light-driven CO 2 -to-CO conversion in a water containing system, which is almost 2.8 times that of the mononuclear cobalt catalyst CoL 1 and is comparable to that of the dinuclear cobalt catalyst Co 2 L.