| Title: |
Achieving Sub-ppm Sensitivity in SO2 Detection with a Chemically Stable Covalent Organic Framework |
| Authors: |
Zhao, W; Obeso, JL; López-Cervantes, VB; Bahri, M; Sánchez-González, E; Amador-Sánchez, YA; Ren, J; Browning, ND; Peralta, RA; Barcaro, G; Monti, S; Solis-Ibarra, D; Ibarra, IA; Zhao, D |
| Publisher Information: |
Wiley |
| Publication Year: |
2025 |
| Collection: |
The University of Liverpool Repository |
| Description: |
We report the inaugural experimental investigation of covalent organic frameworks (COFs) to address the formidable challenge of SO 2 detection. Specifically, an imine-functionalized COF (SonoCOF-9) demonstrated a modest and reversible SO 2 sorption of 3.5 mmol g −1 at 1 bar and 298 K. At 0.1 bar (and 298 K), the total SO 2 uptake reached 0.91 mmol g −1 with excellent reversibility for at least 50 adsorption-desorption cycles. An isosteric enthalpy of adsorption (ΔH ads ) for SO 2 equaled −42.3 kJ mol −1 , indicating a relatively strong interaction of SO 2 molecules with the COF material. Also, molecular dynamics simulations and Møller–Plesset perturbation theory calculations showed the interaction of SO 2 with π density of the rings and lone pairs of the N atoms of SonoCOF-9. The combination of experimental data and theoretical calculations corroborated the potential use of this COF for the selective detection and sensing of SO 2 at the sub-ppm level (0.0064 ppm of SO 2 ). |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
1433-7851 |
| Relation: |
https://livrepository.liverpool.ac.uk/3190022/1/Achieving%20Sub-ppm%20Sensitivity%20in%20SO%26lt%3Bsub%26gt%3B2%26lt%3Bsub%26gt%3B%20Detection%20with%20a%20Chemically%20Stable%20Covalent%20Organic%20Framework.pdf; Collapse authors list. Zhao, W, Obeso, JL, López-Cervantes, VB, Bahri, M orcid:0000-0002-8336-9158 , Sánchez-González, E, Amador-Sánchez, YA, Ren, J, Browning, ND orcid:0000-0003-0491-251X , Peralta, RA, Barcaro, G et al (show 4 more authors) , Monti, S, Solis-Ibarra, D, Ibarra, IA and Zhao, D orcid:0000-0002-4427-2150 (2025) Achieving Sub-ppm Sensitivity in SO2 Detection with a Chemically Stable Covalent Organic Framework Angewandte Chemie International Edition, 64 (3). e202415088-. ISSN 1433-7851, 1521-3773 |
| DOI: |
10.1002/anie.202415088 |
| Availability: |
https://livrepository.liverpool.ac.uk/3190022/; https://doi.org/10.1002/anie.202415088 |
| Rights: |
cc_by_nc_nd_4 |
| Accession Number: |
edsbas.47CC0201 |
| Database: |
BASE |