Efficient and simultaneous capture of iodine and methyl iodide achieved by a covalent organic framework.

ABSTRACT: Radioactive molecular iodine (I₂) and organic iodides, mainly methyl iodide (CH₃I), coexist in the off-gas stream of nuclear power plants at low concentrations, whereas few adsorbents can effectively adsorb low-concentration I₂ and CH₃I simultaneously. Here we demonstrate that the I₂ adsorption can occur on various adsorptive sites and be promoted through intermolecular interactions. The CH₃I adsorption capacity is positively correlated with the content of strong binding sites but is unrelated to the textural properties of the adsorbent. These insights allow us to design a covalent organic framework to simultaneously capture I₂ and CH₃I at low concentrations. The developed material, COF-TAPT, combines h

SUBMITTER: Xie Y 

PROVIDER: S-EPMC9130143 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature