Ion-Imprinted Polypropylene Fibers Fabricated by the Plasma-Mediated Grafting Strategy for Efficient and Selective Adsorption of Cr(VI)

Luo, Zhengwei; Xu, Jun; Zhu, Dongxia; Wang, Dan; Juan, Xu; Jiang, Hui; Geng, Wenhua; Wei, Wuji; Lian, Zhouyang

doi:10.3390/polym11091508

Cited by 18 publications

(10 citation statements)

References 38 publications

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“…Cr(VI) is found in water as oxyanions as a function of concentration and water pH. The removal of Cr(VI) oxyanions from water is a stringent concern that asks for very efficient and selective sorbents (see Table S7 ) [ 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 ]. For example, fast removal of Cr(VI) from aqueous solution was achieved using the Cr(VI)-IIP prepared with 4-VP and DMAEMA as functional monomers, EGDMA as the cross-linker, AIBN as the initiator, and a binary porogen mixture, by thermally induced polymerization [ 143 ].…”

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

confidence: 99%

“…The sorption kinetic of Cr(VI) ions was very fast in the acidic range. As was already mentioned above, in the case of surface IIPs, the recognition sites are placed on or near the surface of the substrate, making the selective sorption of the template very fast [ 144 , 145 , 147 , 148 ]. Surface imprinting of Cr(VI) as the template on polypropylene (PP) as the substrate was adopted by Kong et al [ 144 ].…”

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

confidence: 99%

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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%

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

“…SO 4 2− showed a higher influence on the adsorption of Cr(VI) on the GONN than Cl − and NO 3 − because of the higher affinity of the amino ligands on GONN for SO 4 2− [ 109 ]. Grafting and ion-templating are useful methods to increase the selectivity and feasibility of adsorbents for Cr(VI) in multi-ions system [ 153 ], and more efforts are needed.…”

Section: Factors Affecting Cr(vi) Removalmentioning

confidence: 99%

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Yuan

Luo

et al. 2023

Polymers

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Sorptive removal of hexavalent chromium (Cr(VI)) bears the advantages of simple operation and easy construction. Customized polymeric materials are the attracting adsorbents due to their selectivity, chemical and mechanical stabilities. The mostly investigated polymeric materials for removing Cr(VI) were reviewed in this work. Assembling of robust functional groups, reduction of self-aggregation, and enhancement of stability and mechanical strength, were the general strategies to improve the performance of polymeric adsorbents. The maximum adsorption capacities of these polymers toward Cr(VI) fitted by Langmuir isotherm model ranged from 3.2 to 1185 mg/g. Mechanisms of complexation, chelation, reduction, electrostatic attraction, anion exchange, and hydrogen bonding were involved in the Cr(VI) removal. Influence factors on Cr(VI) removal were itemized. Polymeric adsorbents performed much better in the strong acidic pH range (e.g., pH 2.0) and at higher initial Cr(VI) concentrations. The adsorption of Cr(VI) was an endothermic reaction, and higher reaction temperature favored more robust adsorption. Anions inhibited the removal of Cr(VI) through competitive adsorption, while that was barely affected by cations. Factors that affected the regeneration of these adsorbents were summarized. To realize the goal of industrial application and environmental protection, removal of the Cr(VI) accompanied by its detoxication through reduction is highly encouraged. Moreover, development of adsorbents with strong regeneration ability and low cost, which are robust for removing Cr(VI) at trace levels and a wider pH range, should also be an eternally immutable subject in the future. Work done will be helpful for developing more robust polymeric adsorbents and for promoting the treatment of Cr(VI)-containing wastewater.

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“…However, since PP is non-polar in nature, it does not possess polar and reactive groups along its molecular chains, which limits its ability to adsorb pollutants from wastewaters [ 28 ]. Our research group has been actively involved in the preparation of functionalized PP fibers with special properties through grafting, chemical modification, and other methods [ 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

Lian

Zuo

et al. 2020

Polymers

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This paper uses polypropylene (PP) as the matrix and acrylic acid (AA) and maleic anhydride (MAH) as functional monomers to prepare PP-g-(AA-MAH) fibers by suspension grafting and melt-blown spinning technology that are easy to industrially scale-up. The fibers can be used to adsorb aniline. Results showed that the grafting ratio reached the maximum of 12.47%. The corresponding optimal conditions were grafting time of 3 h, AA: MAH = 0.75, total monomer content of 55%, benzoyl peroxide 1.4%, xylene concentration of 6 mL/g PP, and deionized water content of 8 mL/g PP. Owing to its good fluidity and thermal stability, the product of suspension grafting can be used for melt-blown spinning. Infrared spectroscopic and nuclear magnetic resonance spectroscopic analyses indicated that AA and MAH were successfully grafted onto PP fibers. After grafting, the hydrophilicity of PP-g-(AA-MAH) fiber increased. Therefore, it had higher absorptivity for aniline and the adsorption capacity could reach 42.2 mg/g at 45 min and pH = 7. Moreover, the PP-g-(AA-MAH) fibers showed good regeneration performance.

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Ion-Imprinted Polypropylene Fibers Fabricated by the Plasma-Mediated Grafting Strategy for Efficient and Selective Adsorption of Cr(VI)

Cited by 18 publications

References 38 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

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

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