Photocatalytic CO<sub>2</sub> reduction to syngas using metallosalen covalent organic frameworks.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 37914707.
- Also identified by DOI 10.1038/s41467-023-42757-7 and PMC identifier 10620383.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Metallosalen-covalent organic frameworks have recently gained attention in photocatalysis. However, their use in CO<sub>2</sub> photoreduction is yet to be reported. Moreover, facile preparation of metallosalen-covalent organic frameworks with good crystallinity remains considerably challenging. Herein, we report a series of metallosalen-covalent organic frameworks produced via a one-step synthesis strategy that does not require vacuum evacuation. Metallosalen-covalent organic frameworks possessing controllable coordination environments of mononuclear and binuclear metal sites are obtained and act as photocatalysts for tunable syngas production from CO<sub>2</sub>. Metallosalen-covalent organic frameworks obtained via one-step synthesis exhibit higher crystallinity and catalytic activities than those obtained from two-step synthesis. The optimal framework material containing cobalt and triazine achieves a syngas production rate of 19.7 mmol g<sup>-1</sup> h<sup>-1</sup> (11:8 H<sub>2</sub>/CO), outperforming previously reported porous crystalline materials. This study provides a facile strategy for producing metallosalen-covalent organic frameworks of high quality and can accelerate their exploration in various applications.