Capture and adsorption behavior of iodine by edible γ-CD-MOFs

AgNPs-Containing Metal–Organic Frameworks for the Effective Adsorption and Immobilization of Radioactive Iodine

“…Obviously, AgNPs@UiO-66 owns almost twice the adsorption capacity that of UiO-66, declaring that the AgNPs could effectively improve the adsorption ability of MOFs for I 2 . It is noteworthy that such a high capacity of AgNPs@UiO-66 outperforms most adsorbents (Table ), such as amino-functionalized MIL-101-NH 2 (311 mg/g), Cu-load Cu/MIL-101 (432 mg/g), porous carbon (AK-2, 336 mg/g), and other materials. − ,− Actually, the difference in I 2 adsorption capacity between UiO-66 and AgNPs@UiO-66 can be directly observed with the naked eye. As shown in Figure D, when UiO-66 and AgNPs@UiO-66 of the same mass were dispersed into I 2 solutions with the same concentration, AgNPs@UiO-66 absorbed most of the I 2 and changed the solution color from purple to colorless, while the I 2 solution containing UiO-66 remained purple after 12 h. This intuitive adsorption difference between UiO-66 and AgNPs@UiO-66 further confirms that AgNPs play a key role in the I 2 adsorption process.…”

“…As a new kind of solid adsorbent, porous MOFs, composed of organic ligands and metal ions or clusters, have been widely applied for the removal of harmful substances and environmental remediation, thanks to their adjustable pore size, tailorable structure, as well as designable adsorption sites. − Recently, MOFs have also been successfully utilized to remove radioactive I 2 . Unfortunately, the adsorption capacities in the reported MOFs are relatively low due to the weak interaction between the original frameworks and I 2 . − Therefore, it is desirable to design and develop MOF materials with high I 2 adsorption capacity.…”

Cyclodextrin metal–organic frameworks and derivatives: recent developments and applications

“…Another example of CD-MOFs in gas storage is provided by Yu et al, who explored the potential of g-CD-MOFs for the adsorption and storage of radioactive iodine from nuclear energy production. 122 They reported a maximum iodine gas uptake of 104 wt% and a maximum liquid adsorption capacity of 449.71 mg g À1 at 298 K and suggested a spontaneous and endothermic nature of the iodine adsorption.…”

“…It is lined with C-H groups and offers non-polar interaction sites for various types of molecules, 50,61 thus being the structural feature that makes these materials act as excellent carriers and storage systems for drugs, gases and also inorganic compounds. 120,[122][123][124][125] For instance, a g-CD-MOF was synthesized by Zhang and coworkers for the storage and sustainable release of fragrances. 126 Molecular docking studies revealed hydrogen bonding and host-guest hydrophobic interactions as the responsible factors for holding the fragrance molecules in the g-CD-MOF.…”