Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture.
Angew Chem Int Ed Engl
; : e202411342, 2024 Jul 30.
Article
em En
| MEDLINE
| ID: mdl-39078740
ABSTRACT
Herein, we firstly develop porous organic cage (POC) as an efficient platform for highly effective radioactive iodine capture under industrial operating conditions (typically ≥150 °C), ≤150â
ppmv of I2). Due to the highly dispersed and readily accessible binding sites as well as sufficient accommodating space, the constructed NKPOC-DT-(I-) (NKPOC=Nankai porous organic cage) demonstrates a record-high I2 uptake capacity of 48.35â
wt % and extraordinary adsorption capacity of unit ionic site (~1.62) at 150 °C and 150â
ppmv of I2. The I2 capacity is 3.5, 1.6, and 1.3â
times higher than industrial silver-based adsorbents Ag@MOR and benchmark materials of TGDM and 4F-iCOF-TpBpy-I- under the same conditions. Furthermore, NKPOC-DT-(I-)Me exhibits remarkable adsorption kinetics (k1=0.013â
min-1), which is 1.2 and 1.6â
times higher than TGDM and 4F-iCOF-TpBpy-I- under the identical conditions. NKPOC-DT-(I-)Me thus sets a new benchmark for industrial radioactive I2 adsorbents. This work not only provides a new insight for effectively enhancing the adsorption capacity of unit functional sites, but also advances POC as an efficient platform for radioiodine capture in industry.
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MEDLINE
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Ano de publicação:
2024
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Article