Evaluation of a novel PVC-based efficient potentiometric sensor containing a tripodal diglycolamide (TREN-DGA) ionophore for europium(III) estimation

Mahanty, Bholanath; Satpati, Ashis Kumar; Kumar, Shankey; Leoncini, Andrea; Huskens, Jurriaan; Verboom, Willem; Mohapatra, P. Κ.

doi:10.1016/j.snb.2018.05.159

Cited by 10 publications

(14 citation statements)

References 31 publications

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“…Recent studies on a novel N-pivot tripodal DGA, TREN-DGA ( L II ; Figure ) revealed a promising extraction ability toward trivalent actinides and lanthanides over UO 2 2+ , Cs + , and Sr 2+ . The ligand was also studied in a supported liquid membrane for preferential transport of trivalent lanthanides and actinides over uranyl ions and for making a PVC-based potentiometric sensor .…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient N-Pivot Tripodal Diglycolamide Ligands for Trivalent f-Cations: Synthesis, Extraction, Spectroscopy, and Density Functional Theory Studies

et al. 2019

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A series of four N-pivot tripodal diglycolamide (DGA) ligands, where three DGA moieties are attached to the central N atom via spacers of different lengths and with varying alkyl substituents on the amidic nitrogen of DGA (L I −L IV ), were studied for their extraction and complexation ability toward trivalent lanthanide/actinide ions, including solvent extraction, complexation using spectrophotometric titrations, and luminescence spectroscopic studies. Introduction of a methyl group on the amidic nitrogen atom gives rise to a 400 fold increase of the Eu distribution (D) value [L III (NMe) vs L II (NH)] at 1 M HNO 3 . Enlargement of the spacer length between the pivotal N atom and the DGA moieties with one carbon atom results in a 14 times higher D Eu value [L I (C3) vs L II (C2)]. Slope analyses showed that Eu 3+ was extracted as a bis-solvated species with all four ligands. The compositions of the Eu 3+ /L complexes were further confirmed by spectroscopic measurements, its formation constants following the order: L III > L IV > L I > L II . Luminescence spectroscopy and electrospray ionization mass spectrometry revealed that all four ligands form [Eu(L) 2 (NO 3 ) 3 ] complexes. Density functional theory and thermodynamic parameters corroborated the existence of [Eu(L) 2 (NO 3 ) 3 ] complexes.

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Section: Introductionmentioning

confidence: 99%

Highly Efficient N-Pivot Tripodal Diglycolamide Ligands for Trivalent f-Cations: Synthesis, Extraction, Spectroscopy, and Density Functional Theory Studies

et al. 2019

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“…The response time obtained was found to be comparable or better than the different DGA or multiple‐DGA based sensor electrodes studied by us [16b,c,f] . The life time of the sensor electrode was determined by measuring the slopes of the calibration plots obtained on different days over a period of two months which showed that the membrane sensor electrode was stable up to two months provided it was stored under proper storing conditions (0.001 m Eu(NO 3 ) 3 ) when not in use.…”

Section: Resultsmentioning

confidence: 79%

“…The FTIR is an important tool to understand the presence of the functional moiety in the pristine as well as of the metal ion loaded membrane and also its interaction with the matrix or other constituent of the membrane [16c] . The FTIR of the pristine and the Eu(III) loaded membrane suggested a strong interaction of some fraction of TPDGA with the metal ion for the membrane containing no added plasticizer (S. No.…”

Section: Resultsmentioning

confidence: 99%

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Evidence of Eu(III) Dual Binding in a PVC‐Based Electrochemical Sensor with N,N,N’,N’‐Tetrapentyl Diglycolamide (TPDGA) as the Ionophore: Potentiometric and Luminescence studies

2023

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The present investigation deals with the development of a polyvinyl chloride (PVC) based potentiometric sensor for Eu(III) containing N,N,N',N'-tetrapentyl diglycolamide (TPDGA) as ionophore, 2-nitrophenyl octylether (NPOE) as plasticizer and sodium tetraphenylborate (NaTPB) as ionic additive. The membrane with 8.7 % TPDGA, 29.7 % PVC, 59.0 % NPOE, 2.5 % NaTPB exhibited a linear response behaviour from 1.5 × 10 À 6 m to 1.1 × 10 À 2 m Eu(III) with a slope of 23.4 � 0.3 mV/decade and a limit of detection (LOD) of 1.2 × 10 À 6 m. The sensor showed fast response times (< 5 s) and a lifetime of two months. It showed good tolerance for monovalent/divalent interfering ions and moderate/poor tolerance for trivalent ions. The membrane was characterized using photoluminesce (PL) spectroscopy which suggested NPOE can alter the nature of species in the membrane and evidence the presence of two species. The membrane can be used as an indicator electrode for the potentiometric titration of Eu(III) and in the estimation of europium in the synthetic and laboratory bearing waste which compared well with the x-ray fluorescene (XRF) results.

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“…During the past few decades, large quantities of extractants have been evaluated for the separation of trivalent actinides and lanthanides from acidic feeds. − Among the various ligands, diglycolamide (DGA)-type ligands are considered to be some of the most effective and promising ligands in the proposed “actinide partitioning” program. ,− DGA ligands dissolved in nonpolar diluents such as n -dodecane show a high affinity for trivalent actinides and lanthanides because of the formation of reverse-micelle-like molecular aggregates in nitric acid solutions. − Several investigations reported that three or four TODGA molecules participated in the coordination of the trivalent actinides or lanthanides ions, which were evidenced by EXAFS studies, crystal structures, and other fundamental spectroscopic method. − Therefore, based on the ligand N , N , N ′, N ′-tetraoctyl diglycolamide (TODGA), more pre-organized DGA derivatives containing 2–4 DGA units in one molecule were synthesized and evaluated for the extraction of trivalent actinides and lanthanides from nitric acid. − Recent investigations focused on these DGA derivatives, such as tripodaldiglycolamides (T-DGA), − DGA-functionalized macrocyclic diglycolamide (T12C4ODGA), − DGA-functionalized pillar[5]arenes, − and N -pivot tripodal DGA (TREN-DGA), ,− show the outstanding extraction ability of trivalent actinides with excellent selectivity over plutonium and uranium. Among these DGA derivatives, a novel water-soluble ligand TEE-BisDGA was used as a masking agent for the selective extraction of Am(III) over Eu(III) by NTaAmide into kerosene, and a maximum separation factor of ∼26 for Am(III) over Eu(III) was achieved .…”

Section: Introductionmentioning

confidence: 99%

Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations

et al. 2020

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Diglycolamide-based ligands have recently received increased attention due to their outstanding affinity for trivalent actinides and lanthanides. The structure optimization of the ligands, however, still remains a hot topic to achieve better extraction performance. In this work, we prepare and investigate three multidentate diglycolamide ligands for the selective separation of Eu(III) over Am(III) from a nitric acid solution to explore the effect on the extraction of alkyl groups on the nitrogen atoms in the center of the BisDGA ligands. The introduction of ethyl or isopropyl groups on the central nitrogen atoms greatly increased the distribution ratios of trivalent metal ions and enhanced the separation factor of Eu(III) over Am(III). The complexation behaviors of Eu(III) and Am(III) ions were studied by slope analyses, electrospray ionization mass spectrometry (ESI-MS), and extended X-ray absorption fine structure (EXAFS) spectroscopy. The results indicated that the trivalent metal ions were extracted as 1:2 and 1:3 complexes for all three BisDGA ligands during the extraction. Density functional theory (DFT) calculations verified the relevant experimental conclusion that the selectivity of THEE-BisDGA for Eu(III) is better than that for Am(III). The metal–DGA bonds in the ML3(NO3)3 complexes seem to be stronger than those in ML2(NO3)3 complexes.

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Evaluation of a novel PVC-based efficient potentiometric sensor containing a tripodal diglycolamide (TREN-DGA) ionophore for europium(III) estimation

Cited by 10 publications

References 31 publications

Highly Efficient N-Pivot Tripodal Diglycolamide Ligands for Trivalent f-Cations: Synthesis, Extraction, Spectroscopy, and Density Functional Theory Studies

Highly Efficient N-Pivot Tripodal Diglycolamide Ligands for Trivalent f-Cations: Synthesis, Extraction, Spectroscopy, and Density Functional Theory Studies

Evidence of Eu(III) Dual Binding in a PVC‐Based Electrochemical Sensor with N,N,N’,N’‐Tetrapentyl Diglycolamide (TPDGA) as the Ionophore: Potentiometric and Luminescence studies

Selective Separation and Coordination of Europium(III) and Americium(III) by Bisdiglycolamide Ligands: Solvent Extraction, Spectroscopy, and DFT Calculations

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