Selective Conversion of CO 2 into Cyclic Carbonate on Atom Level Catalysts.

The conversion of carbon dioxide (CO 2 ) into organic carbonates under ambient temperatures and pressures with high conversion and selectivity still faces a great challenge. The zerovalent atomic catalysts (ACs), featuring accurate structure and valence states, provide a new and accurate model system for catalysis. Herein we developed a general preadsorption-reduction strategy to synthesize zerovalent cobalt AC on graphdiyne (Co 0 /GDY). The Co 0 /GDY ACs were used for efficient and selective CO 2 fixation. We were surprised to find that Co 0 /GDY ACs reached nearly 100% conversion at 80 °C and 1 atm in CO 2 fixation and with a significantly high turnover frequency (TOF) of 3024.8 h -1 , which is almost several orders larger than that of benchmarked catalysts. Such high conversion and selectivity represent the advantages of emerging catalysts.