Encapsulation of Polymetallic Oxygen Clusters in a Mesoporous/Microporous Thorium-Based Porphyrin Metal–Organic Framework for Enhanced Photocatalytic CO₂ Reduction

Abstract

Solar-initiated CO2 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 CO2 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 CO2 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 CO2.

An isolated doughnut-like molybdenum(v) cobalto-phosphate cluster exhibiting excellent photocatalytic performance for carbon dioxide conversion

“…Polyoxometalates (POMs), as a kind of inorganic metal oxygen cluster with redox properties and excellent multi-electron transfer ability, have been subject to extensive studies in numerous domains, such as medicine, 22–24 optics, 25–27 catalysis, 28–35 electrochemistry, 36–40 etc . Among plenty of POM-based clusters, molybdenum( v ) cobalto-phosphate clusters have been considered as prospective promising photocatalysts for CO 2 reduction owing to the presence of reduced Mo V and Co II centers.…”

Defect Engineering in CuSx/COF Hybridized Heterostructures: Synergistic Facilitation of the Charge Migration for an Efficacious Photocatalytic Conversion of CO2 into CO

“…To verify whether there is any substance leach during the catalytic process, the aqueous solution is detected by 1 H-NMR and ICP-OES detections, and no Cu 2+ and organic residues are observed (Figure S18 and Table S3). The above results indicate the high stability of the prepared materials. ,− …”

Recent Research Progress and Perspectives on Porphyrin-Based Porous Photocatalysts in the Field of CO2 Reduction

“…After POMs were introduced into IHEP-20, they showed excellent photocatalytic CO 2 reduction activity with a CO yield of 970 μmol g −1 h −1 , which was 3.27 times higher than that of pristine IHEP-20. 46 This study opens a new door for the design and synthesis of porphyrin-based porous photocatalysts for CO 2 reduction with active coordination metals. Inspired by the structure of polyproteins integrating with more chromophores than redox centers while creating a controlled environment around the active site in natural photosynthesis,…”

“…The resulting composite showed good stability in water at pH 0–11. After POMs were introduced into IHEP-20, they showed excellent photocatalytic CO 2 reduction activity with a CO yield of 970 μmol g –1 h –1 , which was 3.27 times higher than that of pristine IHEP-20 . This study opens a new door for the design and synthesis of porphyrin-based porous photocatalysts for CO 2 reduction with active coordination metals.…”