A Nitrogen-Rich Nanoporous Ionic Covalent Organic Framework as Iodine Adsorbent in Gaseous and Aqueous Environments

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2024-11-21 DOI:10.1021/acsanm.4c0530710.1021/acsanm.4c05307

Xuhui Guan, Zhili Shen, Lei Chen, Chong Zhang, Chengguo Sun, Yang Du, Bingcheng Hu* and Chao Gao*,

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引用次数: 0

Abstract

Adsorbents for iodine capture have shown great potential in the treatment of radioactive nuclear waste. Considering that enriched binding sites and strong binding force are efficient strategies to promote the adsorption capacity of iodine, herein we design and construct a nitrogen-rich ionic nanoporous covalent organic framework (ICOF-TG-DCA) through solvothermal synthesis. ICOF-TG-DCA has been well characterized by various techniques and exhibited long-range order with an ionic skeleton. In addition, the iodine capture of ICOF-TG-DCA was investigated in vapor phase under normal pressure at 350 K and in I₂/KI aqueous solution, which the material showed iodine vapor adsorption capacity of 5.15 g g^–1 and I₃^– adsorption capacity of 2.21 g g^–1, respectively. The results show that the presence of rich nitrogen groups together with ionic interactions is beneficial to the capture of iodine in ICOF-TG-DCA. The work demonstrates that construction of nitrogen-rich ionic covalent organic frameworks is a good strategy to achieve high iodine capture performance.

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.