An easily synthesized microporous framework material for the selective capture of radioactive Cs⁺ and Sr²⁺ ions

Abstract

FJSM-InMOF with facile synthesis showed remarkable Cs+ and Sr2+ ion-exchange performance with an unprecedented structural-transformation to illuminate the capture mechanism.

Peptide-Mediated Synthesis of Zeolitic Imidazolate Framework-8: Effect of Molecular Hydrophobicity, Charge Number and Charge Location

“…Metal-organic frameworks (MOFs) are a novel class of crystallized porous materials that are self-assembled by metal clusters as connecting points and organic ligands as bridging molecules to form a two- or three-dimensional framework through coordination bonds [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. MOFs have attracted great interests in recent years by having remarkable features such as adjustable structure, high porosity, large specific surface area, good modifiability and excellent stability and have been used widely in many areas, for example, adsorption [ 8 , 9 , 10 , 11 , 12 , 13 ], catalysis [ 14 , 15 , 16 , 17 , 18 ], sensing [ 19 , 20 , 21 , 22 , 23 ], drug delivery [ 24 , 25 , 26 , 27 , 28 , 29 , 30 ] and gas storage and separation [ 31 , 32 , 33 ], etc. Besides the intrinsic properties of MOFs, their morphology and size also play crucial roles for their practical applications.…”

Highly Efficient Uptake of Cs+ by Robust Layered Metal–Organic Frameworks with a Distinctive Ion Exchange Mechanism

“…The Cs + exchanged products exhibit evident characteristic peaks of 3d 5/2 and 3d 3/2 for Cs + at 724.5 and 738.6 eV ( Figures 3 c and d) for 1 , respectively, and at 724.7 and 738.6 eV ( Figures 3 e and f) for 2 in the XPS survey spectra. 45 The peaks at 399.3 and 402.1 eV can be assigned to N 1s of the amino groups 46 and dimethylamine cations in 1 , 29 respectively ( Figure S11a ). Contrasted with the pristine 1 and 2 , the characteristic peaks for N 1s of the dimethylamine cation for 1-Cs and 2-Cs at 402.1 and 402.3 eV, respectively, almost disappear ( Figure S11 ).…”

“… 28 Our group reported the 3D FJSM-In MOF with an excellent radiation stability, a high removal rate, and a high selectivity for Cs + . 29 …”

“… 33 On the other hand, our previous research developed an effective strategy that ion exchange materials were constructed by inducing the anionic skeletons with small protonated amines such as [(CH 3 ) 2 NH 2 ] + and [CH 3 NH 3 ] + as charge balancing cations, which easily escape from anionic networks. 29 , 37 − 42 …”

High Uptake of ReO4− and CO2 Conversion by a Radiation‐Resistant Thorium–Nickle [Th48Ni6] Nanocage‐Based Metal–Organic Framework

“…Investigation of iodine adsorption on both un‐ and irradiated samples showed that the adsorbing capacity is not significantly affected by 200 kGy β irradiation (Figure S4), further supporting the radiation resistance of 1 . As far as we know, only a few stable MOFs with radiation resistance ability was explored under less than 2×10 5 Gy β irradiation (Table S9), whereas the investigations on stability of MOFs under 4×10 5 Gy β irradiation have not been reported so far.…”