Evidence on the 2-nitrophenyl octyl ether (NPOE) facilitating Copper(II) transport through polymer inclusion membranes

Wang, Duo; Hu, Jiugang; Li, Ya; Fu, Mingbo; Liu, Dabiao; Chen, Qiyuan

doi:10.1016/j.memsci.2015.12.013

Cited by 55 publications

(21 citation statements)

References 39 publications

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“…Hansen and Fyles have also reported a similar mechanism for the valinomycin assisted electrodialysis based transport of K + ion through supported liquid membrane. In the most recent literature, a similar mechanism for the facilitated transport of Cu(II) has also been proposed by Wang et al Even in solvent extraction, the state of the extracted species in the organic phase is an active area of investigation, and Osakai et al have explored the coextraction of water molecules by inorganic cations and anions in hydrophilic solvents like nitrobenzene . Sieffert and Wipff, , by molecular dynamics simulations, have shown that addition of a polar component assists in the solvent extraction of Cs + by a supramolecular carrier.…”

Section: Resultsmentioning

confidence: 81%

“…Thus, a possible alternative mechanism in the present case can be that, under applied electric field, the Cs + ions are transported only as a "solvent (NPOE) separated free ion". 6,10,24,25 Reinhoudt and co-workers 6,24 have also reported a similar transport mechanism for the crown ether mediated transport of potassium perchlorate through NPOE contained in a Accurel membrane. The experimental flux could only be explained based on the assumption that the K + -crown ether complex is fully separated from the perchlorate anion.…”

Section: ■ Results and Discussionmentioning

confidence: 83%

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Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Chaudhury

Bhattacharyya

Goswami

2016

Ind. Eng. Chem. Res.

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In our earlier work, we reported [Env. Sci. Technol. 2014, 48, 12994] a novel electrodialysis based selective separation of Cs + from nuclear waste solution using chlorinated cobalt dicarbollide (HCCD) loaded polymer inclusion membrane (PIM). In continuation with that work, the mechanism of electrodriven transport of Cs + through HCCD loaded polymer inclusion membranes has been explored. PIMs containing fixed amount of cellulose triacetate and nitrophenyl octyl ether (NPOE) but different concentrations of the carrier have been prepared. The experimental flux of Cs + across the PIMs, for two different concentrations of the metal ion in the initial feed solution, has been measured using the radiotracer technique. On the basis of the Nernst−Planck equation, an attempt has been made to calculate the time dependence of concentration changes of the metal ion in the feed compartment. The experimental parameters of the membrane., viz., length, self-diffusion coefficient, distribution ratio, electrical resistance, and current, have been used in the calculation. The experimental results indicate that the transport of Cs + by mobile carrier diffusion or fixed site jumping is not possible. It has been proposed that, under applied electric field, Cs + is mostly transported as "solvent separated ions" through the polar lipophilic solvent NPOE. The proposed mechanism has been substantiated by comparing the experimental and the calculated results.

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Section: Resultsmentioning

confidence: 81%

Section: ■ Results and Discussionmentioning

confidence: 83%

Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Chaudhury

Bhattacharyya

Goswami

2016

Ind. Eng. Chem. Res.

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“…Moreover, 2-NPOE can solubilize the ionophore, soften the PVC membrane, and it is inert to ion exchangers and insoluble in water. 27 …”

Section: Resultsmentioning

confidence: 99%

Widening the applications of the Just-Dip-It approach: a solid contact screen-printed ion-selective electrode for the real-time assessment of pharmaceutical dissolution testing in comparison to off-line HPLC analysis

et al. 2021

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“…PVDF-HFP was selected as the base polymer because of its excellent mechanical strength and stability to a wide range of chemicals . 2NPOE was chosen because of its low viscosity and high dielectric constant, which facilitate the effective transport of metal ions across PIMs . A Rh(III) standard solution was purchased from Kanto Chemical and properly diluted to the desired concentrations.…”

Section: Methodsmentioning

confidence: 99%

“…35 2NPOE was chosen because of its low viscosity and high dielectric constant, which facilitate the effective transport of metal ions across PIMs. 36 A Rh(III) standard solution was purchased from Kanto Chemical and properly diluted to the desired concentrations. Fe(III) chloride, hydrochloric acid (HCl), and ammonium chloride (NH 4 Cl) were purchased from Kishida Chemical.…”

Section: Methodsmentioning

confidence: 99%

Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier

et al. 2020

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Efficient and selective transport of rhodium(III) across a polymer inclusion membrane (PIM) from a 0.1 mol dm–3 HCl feed solution, also containing iron(III), to a receiving solution containing 0.1 mol dm–3 HCl and 4.9 mol dm–3 NH4Cl was achieved using a phosphonium-type ionic liquid, trioctyl(dodecyl)phosphonium chloride (P88812Cl), as the metal ion carrier. The optimum PIM composition for the Rh(III) transport was 50 wt % poly(vinylidene-co-hexafluoropropylene) (PVDF-HFP), 30 wt % P88812Cl, and 20 wt % plasticizer 2-nitrophenyl octyl ether (2NPOE). The driving force for the Rh(III) transport was suggested to be the concentration difference of the chloride ion between the feed and the receiving solutions. More than 70% rhodium(III) could be recovered from the receiving solution, and no transport of iron(III) was observed; however, the two metal ions cannot be separated by liquid–liquid extraction. This is the first report of selective transport of rhodium(III) across a polymer inclusion membrane.

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Evidence on the 2-nitrophenyl octyl ether (NPOE) facilitating Copper(II) transport through polymer inclusion membranes

Cited by 55 publications

References 39 publications

Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Widening the applications of the Just-Dip-It approach: a solid contact screen-printed ion-selective electrode for the real-time assessment of pharmaceutical dissolution testing in comparison to off-line HPLC analysis

Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier

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Evidence on the 2-nitrophenyl octyl ether (NPOE) facilitating Copper(II) transport through polymer inclusion membranes

Cited by 55 publications

References 39 publications

Electrodriven Transport of Cs+ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Electrodriven Transport of Cs+ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Widening the applications of the Just-Dip-It approach: a solid contact screen-printed ion-selective electrode for the real-time assessment of pharmaceutical dissolution testing in comparison to off-line HPLC analysis

Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier

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Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”

Electrodriven Transport of Cs⁺ through Polymer Inclusion Membrane as “Solvent Separated Ions”