Capture of iodine in solution and vapor phases by newly synthesized and characterized encapsulated Cu2O nanoparticles into the TMU-17-NH2 MOF

Defect Engineering of Nanoscale Hf-Based Metal–Organic Frameworks for Highly Efficient Iodine Capture

“…24 Unlike the physically molecular adsorption within the pore, the key for the iodine capture is to supply necessary micro-environments to enhance the affinity interaction between the MOF host and guest. 25,26 For examples, Nenoff et al suggested that the iodine capture within the sodalite (SOD) cage of ZIF-8 mainly ascribes to the favorable interaction of loading iodine molecules with the MeIM linker, which leads to a high 5.4 iodine molecules within each SOD cage. 27 Similarly, a number of previous studies have indicated that the nitrogen-heterocycle imidazole and pyridine linkers or −NH 2 substituted linkers within MOF frameworks could be helpful to increase the content of iodine affinity via the charge-transfer effect, resulting in the high capability in iodine capture.…”

“…Metal–organic frameworks (MOFs) and its nanoscale form (NMOFs), constructed from inorganic metal nodes and organic ligands, represent a new subclass of highly crystallized and porous materials with structural and chemical versatility. , Benefiting from the large Brunauer–Emmett–Teller (BET) surface and adjustable pore size, MOFs have already been considered to be powerful platforms in gas storage and separation, , drug delivery systems, , catalysis, , and pollutant removal and decomposition. , For iodine capture, great progress has been made by using MOF-based adsorbents with high capture efficiency in different mechanisms . Unlike the physically molecular adsorption within the pore, the key for the iodine capture is to supply necessary micro-environments to enhance the affinity interaction between the MOF host and guest. , For examples, Nenoff et al suggested that the iodine capture within the sodalite (SOD) cage of ZIF-8 mainly ascribes to the favorable interaction of loading iodine molecules with the MeIM linker, which leads to a high 5.4 iodine molecules within each SOD cage . Similarly, a number of previous studies have indicated that the nitrogen-heterocycle imidazole and pyridine linkers or −NH 2 substituted linkers within MOF frameworks could be helpful to increase the content of iodine affinity via the charge-transfer effect, resulting in the high capability in iodine capture. − Additionally, the existing guest molecules within the pore of MOFs can be developed to improve the iodine capture, and much higher iodine adsorption of 3.4 g g –1 has been reported recently in the ionic liquid@PCN-333 by forming the dynamic ionic liquid–iodide anion complexes .…”

Fabrication of Protonated Two-Dimensional Metal–Organic Framework Nanosheets for Highly Efficient Iodine Capture from Water

“…50,51 As is known to all, iodine is volatile, and the study of iodine removal performance from the vapor phase is also critically important. 52 Based on the typical nuclear fuel reprocessing condition, 16,53 iodine adsorption from the vapor phase was conducted at 348 K and ambient pressure. MOF nanosheets (50 mg) were added into a preweighed vial, which was kept in a sealed bottle containing iodine pellets, followed by being heated in an oven at 348 K. The color of the adsorbents gradually deepened from original earthy yellow to final dark brown (inset in Figure 7).…”

Highly effective selectively removal of carcinogenic dyes and iodine adsorption and release via a metal–organic framework based on multiple helical chains

“…[ 14,15 ] However, the volatile radioactive iodine produced by nuclear fission (i.e., iodine isotopes 129 I and 131 I, with half‐lives of 10 7 years and 8.02 days, respectively) is a highly mobile gas, which is easily absorbed by the human body and concentrated in the thyroid gland, seriously threatening human life and health. [ 16–19 ]…”

“…[14,15] However, the volatile radioactive iodine produced by nuclear fission (i.e., iodine isotopes 129 I and 131 I, with half-lives of 10 7 years and 8.02 days, respectively) is a highly mobile gas, which is easily absorbed by the human body and concentrated in the thyroid gland, seriously threatening human life and health. [16][17][18][19] Physical, chemical, and biological techniques have been extensively studied to treat pollutants in the past few years. [20][21][22] However, dyes or other pollutants have high chemical stability and resistance to degradation due to their complex chemical structure.…”