Selective conversion of CO<sub>2</sub> to C<sub>2</sub>H<sub>6</sub> in pure water photocatalyzed by fluorobenzene-linked perylene diimide.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40796900.
- Also identified by DOI 10.1038/s41467-025-62369-7 and PMC identifier 12343815.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Photochemical CO<sub>2</sub> conversion to valuable C<sub>2</sub> products is desirable but challenging due to high C-C coupling barriers. This study constructs an acceptor-donor-acceptor type N, N'-bis(4-fluorophenyl) perylene-3,4,9,10-bis(dicarboximide)-supramolecular photocatalyst for efficiently and selectively photo-converting CO<sub>2</sub> and water vapor into C<sub>2</sub>H<sub>6</sub>, achieving a high production rate of 124.84 μmol g<sup>-1</sup> h<sup>-1</sup> with 85% selectivity under continuous 50-hour illumination. The performance is mainly attributed to giant internal electric field induced by the incorporation of fluorobenzene into the perylene diimide framework, greatly enhancing the separation and transfer of photogenerated charges. Theoretical calculations further elucidate the critical role of fluorobenzene in lowering the activation energy of the reaction and promoting the formation of the key C-C coupling intermediate (*COCO). This work provides insight for the design of high-performance catalysts for CO<sub>2</sub> photoreduction.