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Issue 36, 2019, Issue in Progress
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Constructing “breathing” dynamic skeletons with extra π-conjugated adsorption sites for iodine capture

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Abstract

Radioiodine (129I and 131I) emission from the nuclear waste stream has aroused enormous apprehension because of its quick diffusion and radiological contamination. Conventional porous adsorbents such as zeolites and carbon with rigid skeletons and constant pore volumes reveal a limited performance for reliable storage. Here, a series of soft porous aromatic frameworks (PAFs) with additional π-conjugated fragments is disclosed to serve as physicochemical stable media. Due to the flexibility of the tertiary amine center, the PAF products provide sufficient space for the binding sites, and thus exhibit a considerable capability for iodine capture from both gaseous and soluble environments. The obtained capacity of PAFs is ca. 1.6 times higher than that of PAF-1 which possesses similar aromatic constituents featuring an ultra-large specific surface area (BET = 5600 m2 g−1). The novel paradigm of dynamic frameworks is of fundamental importance for designing adsorbents to treat environmental pollution issues.

Graphical abstract: Constructing “breathing” dynamic skeletons with extra π-conjugated adsorption sites for iodine capture

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Supplementary files

Article information


Submitted
13 Mar 2019
Accepted
24 Jun 2019
First published
03 Jul 2019

This article is Open Access

RSC Adv., 2019,9, 20852-20856
Article type
Paper

Constructing “breathing” dynamic skeletons with extra π-conjugated adsorption sites for iodine capture

L. Xia, D. Yang, H. Zhang, Q. Zhang, N. Bu, P. Song, Z. Yan and Y. Yuan, RSC Adv., 2019, 9, 20852
DOI: 10.1039/C9RA01904A

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    [Original citation] - Published by The Royal Society of Chemistry.

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