期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202214189
关键词
Hydrogen-Bonded Crosslinked Organic Framework; Iodide Removal; Iodine Adsorption; Ionic Porous Organic Framework; Nitrate Dimer
资金
- National Science Foundation CAREER award [DMR-1844920]
- Arnold and Mabel Beckman Foundation
- G. Norman Albree Trust Fund
- US DOE [DE-AC02-07CH11358]
- Alfred P. Sloan Foundation through a Sloan research fellowship
- National Science Foundation [1919565]
- Bank of America
In this study, a novel organic framework material (HCOF-7) was developed and demonstrated to efficiently remove iodine and iodide species in water through halogen bonding and anion exchange. The high removal efficiency under practical conditions makes HCOF-7 a promising adsorbent for water treatment.
Iodine is widely used as an antimicrobial reagent for water disinfection in the wilderness and outer space, but residual iodine and iodide need to be removed for health reasons. Currently, it is challenging to remove low concentrations of iodine and iodide in water (approximate to 5 ppm). Furthermore, the remediation of iodine and iodide across a broad temperature range (up to 90 degrees C) has not previously been investigated. In this work, we report a nitrate dimer-directed synthesis of a single-crystalline ionic hydrogen-bonded crosslinked organic framework (HCOF-7). HCOF-7 removes iodine and iodide species in water efficiently through halogen bonding and anion exchange, reducing the total iodine concentration to 0.22 ppm at room temperature. Packed HCOF-7 columns were employed for iodine/iodide breakthrough experiments between 23 and 90 degrees C, and large breakthrough volumes were recorded (>= 18.3 L g(-1)). The high iodine/iodide removal benchmarks recorded under practical conditions make HCOF-7 a promising adsorbent for water treatment.
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