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Develop a universal synthetic platform to construct single-atom metal catalytic sites on covalent organic frameworks to boost photocatalytic carbon dioxide reduction.

September 6, 2022Journal of the American Chemical Society

Engineering Single-Atom Active Sites on Covalent Organic Frameworks for Boosting CO2 Photoreduction

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Authors

LRLei RanHarbin Institute of Technology ZLZhuwei LiNanyang Normal University BRBei RanCity University of Hong Kong

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Implication

Materials study demonstrates efficient CO2 photoreduction using single-atom catalysts on covalent organic frameworks, indicating a scalable strategy for solar fuel production.

Key Points

Develop a universal synthetic platform to construct single-atom metal catalytic sites on covalent organic frameworks to boost photocatalytic carbon dioxide reduction.
Engineered single-atom metal sites (Fe, Co, Ni, Zn, Cu, Mn, Ru) anchored onto a triazine-based covalent organic framework (Tr-COF) using a metal-nitrogen-chlorine bridging motif.
Measured photocatalytic carbon dioxide reduction activity and product selectivity under visible light irradiation.
Characterized atomic configurations and determined reaction pathways using X-ray absorption fine structure (XAFS) spectroscopy and density functional theory (DFT) calculations.
Fe single-atom Tr-COF achieved a CO evolution rate of 980.3 μmol g⁻¹ h⁻¹ with 96.4% selectivity under visible light, an approximately 26-fold increase over pristine Tr-COF.
Synergy between atomically dispersed metal sites and the host framework lowered energy barriers for *COOH intermediate formation while accelerating CO2 activation and CO desorption.

Cite This Study

Ran et al. (2022) studied this question.

synapsesocial.com/papers/69d8f85bade63f05b9bee00c https://doi.org/10.1021/jacs.2c06920

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Implication

Materials study demonstrates efficient CO2 photoreduction using single-atom catalysts on covalent organic frameworks, indicating a scalable strategy for solar fuel production.

Engineering Single-Atom Active Sites on Covalent Organic Frameworks for Boosting CO2 Photoreduction

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Implication

Key Points

Cite This Study

Engineering Single-Atom Active Sites on Covalent Organic Frameworks for Boosting CO2 Photoreduction

Discussion

Member takes

Implication

Key Points

Cite This Study

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