Sorption performance of ethylene glycol dimethacrylate and methacrylic acid copolymers with different cross-link ratio towards rare earth elements

Bunina, Zinaida; Bryleva, E. Yu.; Yurchenko, O. I.; Беликов, К. Н.

doi:10.15407/hftp09.01.080

Cited by 1 publication

(4 citation statements)

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“…7 Previous investigations have shown that ion-imprinted ethylene glycol dimethacrylate and methacrylic acid (MAA) copolymers have large distribution coefficients but are not always characterized by a significant imprinting effect. 8 This issue may be attributed to the competitive interaction between metal ion and crosslinker moieties in the polymer matrix. According to this, a task to obtain sorption materials with the matrix that does not contain extra functional groups capable of nonselective metal ion binding appeared.…”

Section: Introductionmentioning

confidence: 99%

“…Our earlier studies represent the fact that imprinted polymers with the addition of Alizarin red S (ARS) can effectively remove small amounts of rare earths. 8 However, the use of IIPs for accurate determination of low concentrations of the target ion carries a certain risk of obtaining overestimated results. Solution contamination may occur due to the impossibility of 100% template removal from the polymer after synthesis, and therefore, its leakage from the polymer at the elution step is likely to happen.…”

Section: Introductionmentioning

confidence: 99%

“…Previous investigations have shown that ion-imprinted ethylene glycol dimethacrylate and methacrylic acid (MAA) copolymers have large distribution coefficients but are not always characterized by a significant imprinting effect . This issue may be attributed to the competitive interaction between metal ion and crosslinker moieties in the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

“…As has been noted, IIPs are excellent materials for such application. Our earlier studies represent the fact that imprinted polymers with the addition of Alizarin red S (ARS) can effectively remove small amounts of rare earths . However, the use of IIPs for accurate determination of low concentrations of the target ion carries a certain risk of obtaining overestimated results.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Adsorption Properties of Gadolinium-Imprinted Divinylbenzene-Based Copolymers

2021

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Ion-imprinted divinylbenzene and methacrylic acid copolymers for rare-earth element adsorption with crosslink ratios 60 and 40% have been synthesized. Ion imprinting has been carried out via the trapping approach. Alizarin red S has been incorporated in the polymers as a nonvinylated ligand. The obtained materials were characterized via scanning electron microscopy and Fourier transform infrared spectroscopy. Synthesized polymers exist as gel-type nonporous spherical agglomerates from 2 to 6 μm with low surface areas. The sorption properties of the synthesized polymers with respect to lanthanides in static and dynamic modes have been studied. The most efficiently synthesized materials extract rare earth elements from solutions at pH 4−7. The maximum sorption capacity of the obtained polymers with regard to Gd is around 0.5 mmol/g. According to the obtained results, the imprinted polymer with a crosslink ratio 60% is characterized by the highest values of distribution coefficients for lanthanides. The total lanthanide breakthrough capacity for this polymer is 0.861 μmol/g. The adsorption column has been constructed using the imprinted polymer with a crosslink ratio 60%. The column extraction and preconcentration procedure for the trace Eu content determination in the strontium iodide recycled material by inductively coupled plasma−atomic emission spectrometry at a level of 1 × 10 −6 % (mass) has been proposed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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