Encapsulation of Polymetallic Oxygen Clusters in a Mesoporous/Microporous Thorium-Based Porphyrin Metal-Organic Framework for Enhanced Photocatalytic CO 2 Reduction.

Solar-initiated CO 2 reduction is significant for green energy development. Herein, we have prepared a new mesoporous/microporous porphyrin metal-organic framework (MOF), IHEP-20 , loaded with polymetallic oxygen clusters (POMs) to form a composite material POMs@ IHEP-20 for visible-light-driven photocatalytic CO 2 reduction. The as-made composite material exhibits good stability in water from pH 0 to 11. After POMs were introduced to IHEP-20 , they showed superior activity toward photocatalytic CO 2 reduction with a CO production rate of 970 μmol·g -1 ·h -1 , which is 3.27 times higher than that of pristine IHEP-20 . This study opens a new door for the design and synthesis of high-performance catalysts for the photocatalytic reduction of CO 2 .