A novel ion-imprinted amidoxime-functionalized UHMWPE fiber based on radiation-induced crosslinking for selective adsorption of uranium

Abstract

A novel uranium-imprinted adsorbent (AO-Imp fiber) was prepared by radiation-induced crosslinking of amidoxime-functionalized ultra-high molecular weight polyethylene fiber (AO fiber).

Aryl ether-free polymer electrolytes for electrochemical and energy devices

“…Radiation-grafting is a useful method for the chemical modification of pre-formed, inert polymer substrates such as films, 363 powders, 364 and fibres, 365 to form useful functional materials. Radiation-grafted (RG) polymers are being investigated for use in a wide variety of applications across many fields (e.g., clean energy, environmental remediation, healthcare) including electrolyte membranes for low-and hightemperature polymer electrolyte fuel cells and membranebased water electrolysers, [366][367][368][369][370] CO 2 electrolysis to high-value chemicals; 371 CO 2 adsorbents; 365 ion exchange membranes and separators for ED/RED, [372][373][374] RFBs, 367,375,376 actuators, 377 Liion batteries, 378 and supercapacitors; 367 biofouling-resistant membranes for microfiltration; 379 materials for the recovery, extraction, and separation of inorganics including heavy metals ions; 380,381 chromatography materials for protein purification; 382 biomaterials for tissue engineering and engineered skin; 383 and UV absorbers. 384 Scheme 25 summarizes the key stages behind the most commonly encountered pre-irradiation grafting (PIG) method: 367,369,370 (1) irradiation of inert polymer substrates to ''activate'' them (functionalize with radicals or peroxide groups, both of which can initiate copolymerisation); (2) monomer grafting onto the substrates (after an N 2 purge to remove all traces of O 2 ); and (3) an optional post-graft functionalization process.…”

“…Radiation-grafted (RG) polymers are being investigated for use in a wide variety of applications across many fields ( e.g. , clean energy, environmental remediation, healthcare) including electrolyte membranes for low- and high-temperature polymer electrolyte fuel cells and membrane-based water electrolysers, 366–370 CO 2 electrolysis to high-value chemicals; 371 CO 2 adsorbents; 365 ion exchange membranes and separators for ED/RED, 372–374 RFBs, 367,375,376 actuators, 377 Li-ion batteries, 378 and supercapacitors; 367 biofouling-resistant membranes for microfiltration; 379 materials for the recovery, extraction, and separation of inorganics including heavy metals ions; 380,381 chromatography materials for protein purification; 382 biomaterials for tissue engineering and engineered skin; 383 and UV absorbers. 384…”

Uranium extraction from seawater: material design, emerging technologies and marine engineering

“…162,164 Interestingly, a novel method for preparing IIP adsorbents without introducing a crosslinking reagent was proposed. 165 Firstly, AO-functionalized UHMWPE fibers were loaded with template uranyl ions, and then radiation-induced crosslinking was performed instead of using a crosslinking reagent. The AO-Imp fibers were obtained after the elution of uranyl ions (Fig.…”

“…(C) Schematic illustration of the preparation of AO-Imp fibers based on radiation-induced crosslinking. Reproduced with permission 165. Copyright 2019, Royal Society of Chemistry.…”

Dual Ion-Imprinted Mesoporous Silica for Selective Adsorption of U(VI) and Cs(I) through Multiple Interactions

“…The ion-imprinting technique can create specific cavities containing a ligand for the template ion that possesses the right size and charge − and has been broadly applied in the fields of sensing recognition, separation, and enrichment . Thus, the selective adsorption of various nuclides can be achieved by introducing an imprinted cavity for the target nuclide on the surface of adsorbent.…”