An adaptive supramolecular organic framework for highly efficient separation of uranium via an in situ induced fit mechanism

Abstract

The as-synthesized adaptive supramolecular organic framework (MA–TMA) filled with abundant hydrogen-bonded N-/N and N-/O-heterocyclic motifs exhibits remarkable ability for highly efficient separation of uranium via an in situ “induced-fit” ion recognition mechanism.

Preparation of Polyamidoxime/Magnetic Graphene Oxide Composite and Its Application for Efficient Extraction of Uranium(VI) from Aqueous Solutions in an Ultrasonic Field

“…After U­(VI) adsorption, the peak related to the CN– O H produced a shift of 0.16 eV (Figure d), indicating that U­(VI) can interact with the CN– O H groups. On the whole, the peaks of mGO-PAO became wider and shifted to higher binding energy after adsorption of U­(VI), which is consistent with the result reported in the literature. , …”

“…On the whole, the peaks of mGO-PAO became wider and shifted to higher binding energy after adsorption of U(VI), which is consistent with the result reported in the literature. 55,56 On the basis of the XPS analysis, it can be concluded that the U(VI) was adsorbed onto mGO-PAO through the complexation of U(VI) with the imine and the hydroxyl, which probably is due to the η 2 chelation, 57,58 as shown in Figure 14. The results of XPS analysis also indicated the successful preparation of mGO-PAO.…”

Porous Molecular Solids and Liquids

“…That picture is changing; a range of porous hydrogen-bonded organic frameworks (HOFs) 74 —also referred to as supramolecular organic frameworks (SOFs) 75 —has now been reported. 30 , 68 , 74 − 93 The most porous of these so far are Mastalerz’s triptycene benzimidazolone and analogues, 30 , 68 but multiple properties have been studied in addition to surface area, such as fullerene capture, 76 uranium capture, 86 fluorocarbon capture, 94 ion absorption, 89 proton conduction, 78 thermoelasticity, 79 sensing, 81 , 84 , 87 enantioseparations, 91 CO 2 separation, 78 , 80 , 82 , 85 , 90 , 95 and hydrocarbon separation. 68 , 74 , 92 This is a rapidly developing area, and solution processability is a potential advantage for HOFs and SOFs, too.…”

Alkynyl-Based sp 2 Carbon-Conjugated Covalent Organic Frameworks with Enhanced Uranium Extraction from Seawater by Photoinduced Multiple Effects

“…Uranium is essential for the sustainable development of the nuclear industry, [1][2][3] the uranium content in the ocean (about 4.5 billion tons) is almost 1000 times that of uranium on land. 4,5 To achieve continuous development of nuclear energy and environmental protection, it is of considerable significance to develop effective technology for extracting uranium from natural seawater.…”