Modulated synthesis and isoreticular expansion of Th-MOFs with record high pore volume and surface area for iodine adsorption

Abstract

Isoreticular expansion of Th-MOFs via modulated synthesis yielded seven hierarchical complexes with superior quality single crystals, record high void space and BET surface area among Th materials, and exceptional iodine adsorption capacities.

Boosting the Iodine Adsorption and Radioresistance of Th‐UiO‐66 MOFs via Aromatic Substitution

“…All the isothermals can be well fitted to the Langmuir model, suggesting a monolayer adsorption process (Table S4). The maximum adsorption capacities of Th‐UiO‐66‐(NH 2 ) 2 , Th‐UiO‐66‐NH 2 , and Th‐UiO‐66‐Cl were calculated to be 241.5, 186.6, and 107.5 mg g −1 , respectively, which are smaller than that of Th‐UiO‐66 (292.4 mg g −1 ) due to the occupation of void space by substituent groups [9c] . The iodine/cyclohexane‐loaded samples can be regenerated by immersing crystals in ethanol for 6 h at room temperature.…”

Beyond structural motifs: the frontier of actinide-containing metal–organic frameworks

“…Hierarchical tunability of MOF structures allowed Wang and coworkers to develop a Th-MOF containing a very high void space (74%) and a large surface area (3396.5 m 2 g −1 ) for radioactive iodine (I 129 and I 131 ) sequestration 138 as a highly volatile, radiotoxic substance that is detrimental to the human metabolic processes. 168,169 One focus of their report also included the use of modulating acids 170 for efficient control of the MOF growth.…”

“… 171,172 Notably, solution-based sorption studies of iodine in cyclohexane (200 mg L −1 ) revealed that nearly quantitative iodine removal, using the Th-framework, could be achieved. 138 …”

A microporous Ce-based MOF with the octahedron cage for highly selective adsorption towards xenon over krypton

“…[15][16][17][18][19][20] Studies on the separation of natural gases, such as CH 4 , C 2 H 2 and iodine vapor using MOFs have drawn considerable attention. [21][22][23][24][25] Furthermore, studies on the selectivity of Xe/Kr with MOFs under irradiation conditions have emerged with the development of nuclear energy. [26][27][28][29][30][31][32][33][34][35][36][37][38][39] Thallapally et al proposed a concept of a two-bed radioactive off-gas treatment with Ni/DOBDC and FMOF-Cu.…”