Preparation of a novel polyacrylic acid and chitosan interpenetrating network hydrogel for removal of U(vi) from aqueous solutions

Abstract

A clean and simple method has been developed for preparation of interpenetrating polymer networks using polyacrylic acid (PAA) and chitosan (CS) for extraction of uranium from polluted water.

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

“…(2020) ImP(O) (OH) 2 /SiO 2 pH = 4.0 120 618 Budnyak et al. (2018 ) polyacrylic acid (PAA)/CS pH = 4.0 250 289.6 He et al. (2018) Poly (acrylic acid-co-acrylamide)(PAAAM) pH = 4.0 300 713.2 Wei et al.…”

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

“…Compared with microporous and fiber‐based amidoxime‐functionalized adsorbents, hydrogel‐based polymeric adsorbents, which do not require expensive instruments and tedious processes, exhibit a loose hydrophilic 3D network containing lots of water that can effectively disperse the amidoxime‐functionalized polymers. Therefore, the uranyl ions can easily immigrate into the inner layer of the hydrogel . While other hydrogel‐based adsorbents have high uranium adsorption capacities or good selectivity, amidoxime‐functionalized hydrogels have both .…”

“…The sample a and i are this Zn 2+ –PAO hydrogel membrane, the other adsorption capacities of (b–k) and (m–o) samples were cited from refs. 35, 36, 47–50, 39, 51–55, and 42, respectively.…”

“…Therefore, the uranyl ions can easily immigrate into the inner layer of the hydrogel. [19,35,36] While other hydrogel-based adsorbents have high uranium adsorption capacities [37][38][39] Large-scale uranium extraction from seawater is a crucial but challenging part of nuclear power generation. In this study, a new ion-crosslinked supramolecular Zn 2+ -poly(amidoxime) (PAO) hydrogel that can super-efficiently adsorb uranium from seawater is explored.…”

Indole-functionalized cross-linked chitosan for effective uptake of uranium(vi) from aqueous solution

“…The IAA-CTSA exhibited the highest adsorption capacity comparable to most of these alternative adsorbents. 4,28,29,37,57,[61][62][63][64][65][66][67][68][69] Particularly, the maximum adsorp-tion capacity (847.5 mg g −1 ) was dramatically higher than these selected CTS-based adsorbents. 4,28,29,57,[61][62][63][64][65][66][67][68][69] These results revealed the exceptional capture ability of U(VI) on IAA-CTSA benefitting from the synergy of electrostatic interactions, complexation and cation-π interactions.…”