A stable covalent organic framework for photocatalytic carbon dioxide reduction.

ABSTRACT: Photocatalytic conversion of CO₂ into fuels is an important challenge for clean energy research and has attracted considerable interest. Here we show that tethering molecular catalysts-a rhenium complex, [Re(bpy)(CO)₃Cl]-together in the form of a crystalline covalent organic framework (COF) affords a heterogeneous photocatalyst with a strong visible light absorption, a high CO₂ binding affinity, and ultimately an improved catalytic performance over its homogeneous Re counterpart. The COF incorporates bipyridine sites, allowing for ligation of the Re complex, into a fully π-conjugated backbone that is chemically robust and promotes light-harvesting. A maximum rate of 1040 μmol g^-1 h^-1 for CO production with 81% selectivity was measured.

SUBMITTER: Fu Z 

PROVIDER: S-EPMC7069507 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature