Abstract
Metal-organic framework (MOF) derived porous carbons are known as desirable catalysts for carbon dioxide (CO2) catalytic conversion. However, practical CO2 utilization processes are severely hampered by their powder form and relatively poor activities. Herein, we demonstrate the rational synthesis of ZnO and/or metallic Co embedded in N-doped porous carbon by one-step pyrolysis of bimetallic MOF, Co/Zn-ZIF. The optimized catalyst exhibits remarkable activity and recyclability towards the coupling reaction of CO2 and epoxides owing to hierarchical pore, good CO2 uptake and sufficient active sites. More importantly, its catalytic performance can be well maintained even under dilute CO2 (15%), humid environment or light irradiation instead of heating. These results pave a way to develop highly efficient materials for practical CO2 catalytic conversion.
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