Post-synthetic atomically precise single-CuII sites in a thiacalix4arene-supported octahedral Na@Co24 cluster: the Cu–Co synergistic effect for selective photocatalytic conversion of CO2 to CO

摘要

A thiacalix[4]arene-supported octahedral Na@Co24 cluster has been fabricated by the modular assembly of six Co4-(TC4A) polynuclear secondary building units (PSBUs) and eight 2,4,6-PTC linkers. The post-modification of Na@Co24 by ion exchange of Na+ with Cu2+ on the surface of the octahedron afforded a structurally well-defined Cu@Co24 cluster. The obtained Cu@Co24 cluster achieved improved visible-light absorption and selective photoreduction of CO2 to CO due to the Cu–Co synergistic effect.