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Preparation of an electron-rich polyimide-based hypercrosslinked polymer for high-efficiency and reversible iodine capture.
- Source :
-
Polymer . Feb2023, Vol. 267, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Effective and reversible iodine adsorption is among the most important means to solve nuclear pollution. Herein, a novel electron-rich hypercrosslinked polymer (HCP) was obtained via a simple photocycloaddition of the cinnamoyl-containing polyimide precursor. The resulting polymer showed a high specific surface area of 531 m2 g−1 and high thermal stability. Taking advantage of the high porosity, high electron-rich heteroatoms contents and π-electron conjugated backbone, the material exhibits excellent iodine capture performance, including ultrahigh iodine vapor capture (528 wt%) and iodine removal efficiency from aqueous solution. The capture behavior is consistent with the pseudo-second-order model and the spectral results indicate that the captured iodine existed in the form of polyiodide anions. Furthermore, the HCP maintained 90.76% of the uptake capacity after four cycles. This study provides a new proposal for the preparation of functional HCP as an efficient iodine absorbent to solve environmental issues. [Display omitted] • Novel electron-rich hypercrosslinked polymer (HCP) was obtained via a simple photocycloaddition of polyimide precursor. • The resulting polymer showed a high specific surface area of 531 m2 g−1 and high thermal stability. • It exhibits excellent iodine capture performance (528 wt%) and iodine removal efficiency in aqueous solution (83.5%). • The HCP maintained 90.76% of the uptake capacity after four cycles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00323861
- Volume :
- 267
- Database :
- Academic Search Index
- Journal :
- Polymer
- Publication Type :
- Academic Journal
- Accession number :
- 161601756
- Full Text :
- https://doi.org/10.1016/j.polymer.2022.125665