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Updated: Oct 13, 2025

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Published on: July 13, 2018
Halogen Bonding Adsorbent Pyridine N-oxides for Iodine Capture in Water
Wen Xin Wu1, Hu Cheng Liu1, Wei Jun Jin1
1College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
Abstract:
Rapid capture of 129 I with high volatility and toxicity in the environment has attracted much attention. Herein we reported a firstly synthesized nonporous material: pyridine N-oxides (NTPO and ATPO) as iodine adsorbent. Both of NTPO and ATPO exhibit remarkable performance on the adsorption of iodine in aqueous solution, vapor state and organic solvents. Upon the capture of iodine, pyridine N-oxides were transformed to binary cocrystals combined with the pyridine N-oxides and iodine which is driven by halogen bond between iodine and oxygen atoms. Moreover, pyridine N-oxides shows high chemical, thermal and moisture stability.
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