Volume 28, Issue 70 e202201933
Research Article

Effective Iodine Capture Behavior by a Censer-shaped Macrocycle in Vapor Phase and Aqueous Solution

Jianmin Jiao

Jianmin Jiao

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

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Wang Xie

Wang Xie

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

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Yumei Li

Yumei Li

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

Key Laboratory of Surficial Geochemistry, School of Earth Sciences and Engineering, Nanjing University, 210023 Nanjing, P. R. China

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Prof. Dr. Chen Lin

Corresponding Author

Prof. Dr. Chen Lin

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

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Prof. Dr. Juli Jiang

Corresponding Author

Prof. Dr. Juli Jiang

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

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Prof. Dr. Leyong Wang

Corresponding Author

Prof. Dr. Leyong Wang

State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, P. R. China

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First published: 16 September 2022
Citations: 1

Graphical Abstract

A cyclotrixylohydroquinoylene (CTX) derivative, CTX[P(O)Ph], was reported as an efficient iodine adsorbent here. The CTX[P(O)Ph] powder exhibited high performance in both of iodine vapor adsorption and iodine aqueous solution adsorption. More importantly, two types of iodine loading crystal structures were obtained under different conditions to reveal the adsorption mechanism.

Abstract

Iodine capture is of great significance for disposal of the hazardous radioactive iodine. CTX[P(O)Ph], one kind of censer-shaped macrocycle cyclotrixylohydroquinoylene (CTX) derivatives, was applied as an efficient iodine adsorbent. It showed satisfactory iodine adsorption capacity in vapor phase and could be reused without obvious adsorption capacity loss. Besides, the adsorbent could also uptake iodine in water. Fortunately, two iodine loading CTX[P(O)Ph] crystal structures were obtained under different conditions to explore the mechanism of iodine adsorption. This work provides a relatively rare example of iodine adsorption by macrocycle. It is promising that the results with crystal information might be meaningful for exploring and designing new kinds of iodine adsorbents.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.