A novel ion-imprinted polymer for selective removal of trace Fe(III) from Cr(III)-containing solutions

Zhu, Guang-jin; Tang, Haiyan; Zhang, Hongling; Li, Pei; Zhou, Peng; Shi, Yi-lang; Cai, Zai-hua; Xu, Hongbin; Zhang, Yi

doi:10.1016/j.hydromet.2019.04.002

Cited by 14 publications

(11 citation statements)

References 43 publications

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“…Another important application of Fe(III)-IIPs sorbents is focused on the removal of trace Fe(III) from Cr(III)-containing solutions [ 120 , 121 ]. The presence of iron impurities during the fabrication of Cr(III) products has negative effects on the tanning properties of the basic chromium sulfate and on the coloring efficiency of chromium oxide green [ 120 , 121 ].…”

Section: Ion-imprinted Polymeric Materials For Selective Extraction O...mentioning

confidence: 99%

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

Lazăr¹,

Ghiorghiță²,

Drăgan³

et al. 2023

Molecules

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The introduction of selective recognition sites toward certain heavy metal ions (HMIs) is a great challenge, which has a major role when the separation of species with similar physicochemical features is considered. In this context, ion-imprinted polymers (IIPs) developed based on the principle of molecular imprinting methodology, have emerged as an innovative solution. Recent advances in IIPs have shown that they exhibit higher selectivity coefficients than non-imprinted ones, which could support a large range of environmental applications starting from extraction and monitoring of HMIs to their detection and quantification. This review will emphasize the application of IIPs for selective removal of transition metal ions (including HMIs, precious metal ions, radionuclides, and rare earth metal ions) from aqueous solution by critically analyzing the most relevant literature studies from the last decade. In the first part of this review, the chemical components of IIPs, the main ion-imprinting technologies as well as the characterization methods used to evaluate the binding properties are briefly presented. In the second part, synthesis parameters, adsorption performance, and a descriptive analysis of solid phase extraction of heavy metal ions by various IIPs are provided.

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Section: Ion-imprinted Polymeric Materials For Selective Extraction O...mentioning

confidence: 99%

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

Lazăr¹,

Ghiorghiță²,

Drăgan³

et al. 2023

Molecules

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show abstract

“…There are many theories describing the equilibrium of ion exchange. For many years, sorption processes have been used by Freundlich, Langmuir, Dubinin‐Radushkevich, Temkin, 19 and others to model various equilibrium isotherms. Adsorption isotherms describe the relationship between the amount of substance, that is adsorbed by an adsorbent, and the concentration of the solution substance in equilibrium 18,19 .…”

Section: Introductionmentioning

confidence: 99%

“…For many years, sorption processes have been used by Freundlich, Langmuir, Dubinin‐Radushkevich, Temkin, 19 and others to model various equilibrium isotherms. Adsorption isotherms describe the relationship between the amount of substance, that is adsorbed by an adsorbent, and the concentration of the solution substance in equilibrium 18,19 . When analyzing the sorption process, the main attention was paid to the kinetic analysis of the pseudo‐first, pseudo‐second order, and changes in the thermodynamic parameters of the process (Table 1).…”

Section: Introductionmentioning

confidence: 99%

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Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Bekchanov

Kawakita

Mukhamediev

et al. 2021

Polymers for Advanced Techs

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In this article, we studied the process of obtaining nitrogen‐ and sulfur‐containing polyampholyte by chemical modification of sulphocation exchanger. Which is synthesized based on polyvinyl chloride (PVC), with polyethylenepolyamine. Besides, the PVC and synthesized ion exchange resins were characterized using different tools such as FT‐IR, scanning electron microscope, and energy‐dispersive X‐ray. Moreover, the synthesized polyampholyte was used as effective adsorbents for removing Co (II) and Cr (III) ions from aqueous solutions. The Freundlich isotherm and the pseudo‐second order kinetic model were more consistent with the removal of metal ions from aqueous solutions. In the case of Co (II) and Cr (III), the maximum adsorption capacity was 3.45 and 3.97 mmol g−1, respectively. The thermodynamic parameters of the sorption process of metal ions such as free energy (ΔG), enthalpy (ΔН), and entropy (ΔS) of the system were calculated. Furthermore, we find that the adsorption processes were spontaneous and chemisorption.

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“…8,9 Choosing the right functional monomer and ligand is a key factor that determines the stability of the complex formed before and during the polymerization process as well as the subsequent ability of the IIP to interact selectively with the target ion. According to the available literature, there are studies on new IIPs and their application for SPEs of Fe(II) 10 and Fe(III) [11][12][13][14][15][16][17][18][19][20] ions. However, these sorbents have been used mostly for Fe(II) or Fe(III) enrichment; their application for Fe(II)/ Fe(III) speciation has not been tested.…”

Section: Introductionmentioning

confidence: 99%

Fe(II)ion‐imprinted copolymer gels − smart materials for Fe(II)/Fe(III) speciation in surface waters

Dakova

Mitreva

Karadjova

2021

Polymer International

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The effect of template species -Fe(II) complexes with 4-(2-pyridylazo)resorcinol or 2,2 0 -bipyridine as well as the functional monomers: acidic (methacrylic acid) and neutral (hydroxyethyl methacrylate) on the extraction efficiency and applicability of Fe(II) ion-imprinted polymers for iron speciation in surface waters is presented in this study. The polymers were synthesized by precipitation copolymerization of functional monomer, trimethylolpropane trimethacrylate (crosslinking agent) and 2,2 0 -azo-bis-isobutyronitrile (initiator) in the presence of template and characterized by elemental microanalysis, SEM and Brunauer-Emmett-Teller analyses. Extraction efficiency was examined by batch solid-phase extraction. The equilibrium experimental data of adsorption processes with different synthesized sorbents were fitted by both Langmuir and Freundlich isotherms and are discussed from the viewpoint of possible bond formation between monomer and template species and the stability of the prepolymerization complex. Pseudo-first-order and pseudo-second-order kinetic models were tested to elucidate the possible controlling mechanism of the sorption process for different sorbents. Under the optimum conditions pH 7 and equilibrium time of 30 min the highest extraction efficiency and selectivity toward Fe(II) was achieved for Fe(II) ion-imprinted polymer containing methacrylic acid and Fe(II)-4-(2-pyridylazo)resorcinol complex as a template. The analytical procedure for Fe speciation was developed and validated with this sorbent.

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A novel ion-imprinted polymer for selective removal of trace Fe(III) from Cr(III)-containing solutions

Cited by 14 publications

References 43 publications

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution

Sorption of cobalt (II) and chromium (III) ions to nitrogen‐ and sulfur‐containing polyampholyte on the basis of polyvinylchloride

Fe(II)ion‐imprinted copolymer gels − smart materials for Fe(II)/Fe(III) speciation in surface waters

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