p‐π Conjugated Covalent Organic Frameworks Expedite Molecular Triplet Excitons for H 2 O 2 Production Coupled with Biomass Upgrading
Fudan University · Sichuan Agricultural University · +1 more institution
Abstract
Abstract High‐efficiency production of triplet states in covalent organic framework photocatalysts is crucial for high‐selectivity oxygen (O 2 ) reduction to hydrogen peroxide (H 2 O 2 ). Herein, fluorine and partial fluorine atoms are incorporated into an olefin‐linked triazine covalent organic framework (F‐ol‐COF and HF‐ol‐COF), in which the adjacent fluorine (F) atoms‐olefinic bond forms p‐π conjugation that induces spin‐polarization under irradiation, thus expediting triplet excitons for activating O 2 to singlet oxygen ( 1 O 2 ) and contributing to a high H 2 O 2 selectivity (91%). Additionally, the feasibility of coupling H 2 O 2 production with the valorization of 5‐hydroxymethylfurfural (HMF) is…
Citation impact
- FWCI
- 21.98
- Percentile
- 100%
- References
- 50
Authors
10Topics & keywords
- Covalent organic framework
- Covalent bond
- Fluorine
- Materials science
- Singlet oxygen
- Photochemistry
- Selectivity
- Photocatalysis