Binding of uranyl ion by 2,2′-dihydroxyazobenzene attached to crosslinked polystyrenes covered with highly populated quaternary ammonium cations

Lee, Kwanpyo; Jang, Bo‐Bin; Kwon, Won Jong; Suh, Junghun

doi:10.1002/(sici)1099-0518(19991115)37:22<4117::aid-pola10>3.0.co;2-b

Cited by 7 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Suh and colleagues functionalized Sephadex G-25 resin with a metal-binding ligand composed of 2,2′-dihydroxyazobenzene (DHAB) attached to poly(ethylenimine) (PEI; Figure ). This work followed previous studies by the same group where DHAB was attached to a chloromethylated cross-linked poly(St) support, chloromethylated poly(St- co -DVB), and pure PEI . In the former references, the chloromethyl group could also be converted to a quaternary ammonium function by treating with various tertiary amines. , In this work, spectrophotometric titration experiments revealed 1:1 complexes of various metals, including uranium, with PEI-bound DHAB (Figure ).…”

Section: Synthetic Polymerssupporting

confidence: 67%

“…This work followed previous studies by the same group where DHAB was attached to a chloromethylated cross-linked poly(St) support, chloromethylated poly(St- co -DVB), and pure PEI . In the former references, the chloromethyl group could also be converted to a quaternary ammonium function by treating with various tertiary amines. , In this work, spectrophotometric titration experiments revealed 1:1 complexes of various metals, including uranium, with PEI-bound DHAB (Figure ). After grafting to the Sephadex resin with cyanuric chloride as a coupling reagent, the adsorbent was investigated for recovery of metals from seawater.…”

Section: Synthetic Polymerssupporting

confidence: 67%

“…Noteworthy results from Korea from 1999 to 2000 articulated the postsynthetic installation of a cationic site within the adsorbent polymer, advantageous from the perspective of increasing hydrophilicity, facilitating mass transport through Coulombic repulsion-induced swelling of graft chains, and promoting electrostatic concentration of the anionic UO 2 (CO 3 ) 3 4– in seawater. − …”

Section: Brief History Of the Recovery Of Seawater Uraniummentioning

confidence: 99%

See 2 more Smart Citations

Materials for the Recovery of Uranium from Seawater

et al. 2017

View full text Add to dashboard Cite

More than 1000× uranium exists in the oceans than exists in terrestrial ores. With nuclear power generation expected to increase over the coming decades, access to this unconventional reserve is a matter of energy security. With origins in the mid-1950s, materials have been developed for the selective recovery of seawater uranium for more than six decades, with a renewed interest in particular since 2010. This review comprehensively surveys materials developed from 2000-2016 for recovery of seawater uranium, in particular including recent developments in inorganic materials; polymer adsorbents and related research pertaining to amidoxime; and nanostructured materials such as metal-organic frameworks, porous-organic polymers, and mesoporous carbons. Challenges of performing reliable and reproducible uranium adsorption studies are also discussed, as well as the standardization of parameters necessary to ensure valid comparisons between different adsorbents.

show abstract

Section: Synthetic Polymerssupporting

confidence: 67%

Section: Synthetic Polymerssupporting

confidence: 67%

Section: Brief History Of the Recovery Of Seawater Uraniummentioning

confidence: 99%

See 1 more Smart Citation

Materials for the Recovery of Uranium from Seawater

et al. 2017

View full text Add to dashboard Cite

show abstract

Resins with the ability to bind copper and uranyl ions

Rivas

Pereira

Jara

et al. 2005

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:Crosslinked poly(1-vinyl imidazole-coacrylic acid) and crosslinked poly(1-vinylmidazole-co-2-acrylamido-2-methyl-1-propanesulfonic acid) were synthesized by radical polymerization and characterized by elemental analysis and FTIR spectroscopy. The polymerization yields were 79 and 99%, respectively. The metal ion binding properties for copper(II) and uranium(VI) were studied under noncompetitive and competitive conditions by Batch equilibrium procedure. The resin crosslinked poly(1-vinyl imidazole-co-acrylic acid) showed a higher dependence on pH than crosslinked poly(1-vinylmidazole-co-2-acrylamido-2-methyl-1-propanesulfonic acid). The retention of uranyl ions for the latter resin was close to 100% at pH 5.0. The higher maximum retention capacity was close to 0.

show abstract