Tuning of Microenvironment in Covalent Organic Framework via Fluorination Strategy promotes Selective CO2 Capture.
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ArticleAuthors
Das, NitumaniPaul, Ratul
Chatterjee, Rupak
Shinde, Digambar
Lai, Zhiping

Bhaumik, Asim
Mondal, John
KAUST Department
Advanced Membranes and Porous Materials Research CenterPhysical Science and Engineering (PSE) Division
Chemical Engineering Program
Date
2022-11-14Embargo End Date
2023-11-14Permanent link to this record
http://hdl.handle.net/10754/685761
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Herein, we have designed and synthesized two heteroatom (N, O) rich covalent organic frameworks (COF), PD-COF and TF-COF, respectively, to demonstrate their relative effect on CO2adsorption capacity and also CO2/N2 selectivity. Compared to the non-fluorinated PD-COF (BET surface area 805 m2g-1, total pore volume 0.3647 ccg-1), a decrease in BET surface area and also pore volume have been observed for fluorinated TF-COF due to the incorporation of fluorine to the porous framework (BET surface area 451 m2g-1, total pore volume 0.2978 ccg-1). This fact leads to an enormous decrease in the CO2adsorption capacity and CO2/N2 selectivity of TF-COF, though it shows stronger affinity towards CO2 with a Qst of 37.76 KJ/mol. The more CO2 adsorption capacity by PD-COF can be attributed to the large specific surface area with considerable amount of micropore volume compared to the TF-COF. Further, PD-COF exhibited CO2/N2 selectivity of 16.8, higher than that of TF-COF (CO2/N2 selectivity 13.4).Citation
Das, N., Paul, R., Chatterjee, R., Shinde, D. B., Lai, Z., Bhaumik, A., & Mondal, J. (2022). Tuning of Microenvironment in Covalent Organic Framework via Fluorination Strategy promotes Selective CO2 Capture. Chemistry – An Asian Journal. Portico. https://doi.org/10.1002/asia.202200970Sponsors
N.D. &R.P. kindly acknowledge DST-INSPIRE New Delhi program (GAP-0881 andGAP-0799) for the financial support. This work was also financially aided by The Council of Scientific and Industrial Research (CSIR)-Young Scientist Award (YSA) (reference no. HRDG/YSA-19/02/21(0045)/2019) and CSIR-Focused Basic Research (CSIR-FBR) under the CLP theme (reference no. 34/1/TD-CLP/NCP-FBR 2020-RPPBDD-TMD-SeMI). J. M. is also grateful to DST for financial support under DST/TMD-EWO/AHFC-2021/2021/32 theme (GAP-0922). We also acknowledge the Director, CSIR-IICT (Ms. No.IICT/Pubs./2022/292).Journal
Chemistry, an Asian journalPubMed ID
36373678Additional Links
https://onlinelibrary.wiley.com/doi/10.1002/asia.202200970ae974a485f413a2113503eed53cd6c53
10.1002/asia.202200970
Scopus Count
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