Early warning sensors for monitoring mercury in water

Pinaeva, Uliana; Lairez, D.; Oral, O.; Faber, A.; Clochard, Marie-Claude; Wade, T.; Moreau, Pauline; Ghestem, Jean Philippe; Vivier, M.; Ammor, S.; Nocua, R.; Soule, A.

doi:10.1016/j.jhazmat.2019.05.023

Cited by 14 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polyacrylic acid (PAA) and poly(4-vinylpyridine) (P4VP) grafted membranes were fabricated as previously reported 14,15 . The carboxyl group of PAA (-COOH) is a weak acid and partially dissociates in water (pKa is 4.5 18 ) possessing pure electrostatic interaction with dissolved metal ions.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

An uranyl sorption study inside functionalised nanopores

Pinaeva¹,

Ollier²,

Cavani³

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Sorption mechanism of uranyl by poly(bis[2-(methacryloyloxy)ethyl] phosphate) (PB2MP) functionalised polyvinylidene fluoride (PVDF) track-etched membranes, PB2MP-g-PVDF, was investigated. It was found that uranyl sorption obeyed Langmuir isotherm model giving a maximum U(VI) membrane uptake of 6.73 μmol g −1 and an affinity constant of 9.85 10 6 L mol −1 . XpS and tRpL measurements were performed to identify sorbed uranyl oxidation state and its environment. Uranyl was found to be mainly in its hexavalent state, i.e. U(VI), showing that the trapping inside the PB2MPg-PVDF nanoporous membranes did not change the ion speciation. Two sorbed uranyl life-times (τ 1 = 8.8 μs and τ 2 = 102.8 μs) were measured by TRPL which pointed out different complexations taking place inside the nanopores. Uranyl sorption by PB2MP-g-PVDF membranes was also found to be pH dependent demonstrating the highest performance at circumneutral pH. In addition, TRPL was demonstrated to be not only a remarkable technique for U(VI) characterization, but also an alternative to voltammetry detection for trace on-site uranyl monitoring using PB2MP-g-PVDF nanoporous membranes.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Semicrystalline Track etching. SHI irradiated β-PVDF films were chemically etched using 10 M KOH and 0.25 M KMnO 4 solutions at 65° C for 25 min 14 . The etched membranes were washed with aqueous solution of 7.5 wt.% Na 2 S 2 O 5 to reduce the remaining KMnO 4 followed by rigorous rinsing by deionized water.…”

Section: Methodsmentioning

confidence: 99%

An uranyl sorption study inside functionalised nanopores

Pinaeva¹,

Ollier²,

Cavani³

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…2,3 Remarkable recent progress in PVP chemistry includes applications in solar cells, 4,5 organic-inorganic hybrid functional materials, [6][7][8][9][10] nanomaterials, 11,12 catalysis/electrocatalysis, [13][14][15] heavy metal absorption/removal [16][17][18] and environmental sensors. [19][20][21] In addition to its main applications in polymer materials, 4-VP is also an important synthon in organic synthetic chemistry as well as in small molecular materials. [22][23][24] Assuming that studies on the synthesis and modification of small molecules derived from 4-VP could be helpful for understanding the properties and behaviour in the polymeric state, we were interested in the synthesis of novel organic compounds derived from 4-VP and further studying the derivatization and coordination chemistry utilizing the pyridine functionality.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 Remarkable recent progress in PVP chemistry includes applications in solar cells, 4,5 organic–inorganic hybrid functional materials, 6-10 nanomaterials, 11,12 catalysis/electrocatalysis, 13-15 heavy metal absorption/removal 16-18 and environmental sensors. 19-21…”

Section: Introductionmentioning

confidence: 99%

4-vinylpyridine derivatives: Protonation, methylation and silver(I) coordination chemistry

Zhang

2021

Journal of Chemical Research

View full text Add to dashboard Cite

( E)-4-[2-(Pyridin-4-yl)vinyl]benzaldehyde, containing both a 4-vinylpyridine and an aldehyde functionality, is utilized to develop new, highly conjugated chalcone compounds and a bis-Schiff base azine compound. The chalcone-containing compounds are further explored for their protonation, methylation and silver(I) coordination chemistry using the pyridine moiety. In parallel, a cyano-containing analogue, ( E)-4-[2-(pyridin-4-yl)vinyl]benzonitrile is also synthesized and studied for its silver(I) coordination chemistry. These new compounds are fully characterized by mass spectrometry, elemental analysis and spectroscopic techniques. The methylated product of ( E)-1-(9-anthryl)-3-{4-[2-(pyridin-4-yl)vinyl]phenyl}prop-2-en-1-one and a silver complex of ( E)-4-[2-(pyridin-4-yl)vinyl]benzonitrile are structurally determined by X-ray crystallography.

show abstract

“…Such grafted membranes were transformed into membrane electrode by deposition of gold layer (50 nm) and found to be sensitive to sub-ppb Pb 2+ concentration. Poly(4-vinyl pyridine) (P4VPy) grafted into PVDF was found to be effective in detection of mercury [19,26] with concentrations ng/L after 24 h of absorption and µg/L after 2 h of absorption. Penaeva et al [18] reported the electron-beam-induced graft polymerization of bis[2-(methacryloyloxy)ethyl] phosphate onto PVDF membrane for the detection of uranium (VI) in ppb concentrations from 20 to 100 ppb using square wave cathodic stripping voltammetry.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of PET Track-Etched Membranes by UV-Induced Graft (co)Polymerization for Detection of Heavy Metal Ions in Water

et al. 2019

View full text Add to dashboard Cite

Nowadays, water quality monitoring is an essential task since environmental contamination and human exposure to heavy metals increased. Sensors that are able to detect ever lower concentrations of heavy metal ions with greater accuracy and speed are needed to effectively monitor water quality and prevent poisoning. This article shows studies of the modification of flexible track-etched membranes as the basis for the sensor with various polymers and their influence on the accuracy of detection of copper, cadmium, and lead ions in water. We report the UV-induced graft (co)polymerization of acrylic acid (AA) and 4-vinylpyridine (4-VPy) on poly(ethylene terephthalate) track-etched membrane (PET TeMs) and use them after platinum layer sputtering in square wave anodic stripping voltammetry (SW-ASV) for detection of Cu2+, Cd2+, and Pb2+. Optimal conditions leading to functionalization of the surface and retention of the pore structure were found. Modified membranes were characterized by SEM, FTIR, X-ray photoelectron spectroscopy (XPS) and colorimetric analysis. The dependence of the modification method on the sensitivity of the sensor was shown. Membrane modified with polyacrylic acid (PET TeMs-g-PAA), poly(4-vinylpyridine) (PET TeMs-g-P4VPy), and their copolymer (PET TeMs-g-P4VPy/PAA) with average grafting yield of 3% have been found to be sensitive to µg/L concentration of copper, lead, and cadmium ions. Limits of detection (LOD) for sensors based on PET TeMs-g-PAA are 2.22, 1.05, and 2.53 µg/L for Cu2+, Pb2+, and Cd2+, respectively. LODs for sensors based on PET TeMs-g-P4VPy are 5.23 µg/L (Cu2+), 1.78 µg/L (Pb2+), and 3.64 µg/L (Cd2+) µg/L. PET TeMs-g-P4VPy/PAA electrodes are found to be sensitive with LODs of 0.74 µg/L(Cu2+), 1.13 µg/L (Pb2+), and 2.07 µg/L(Cd2+). Thus, it was shown that the modification of membranes by copolymers with carboxylic and amino groups leads to more accurate detection of heavy metal ions, associated with the formation of more stable complexes.

show abstract

Early warning sensors for monitoring mercury in water

Cited by 14 publications

References 21 publications

An uranyl sorption study inside functionalised nanopores

An uranyl sorption study inside functionalised nanopores

4-vinylpyridine derivatives: Protonation, methylation and silver(I) coordination chemistry

Functionalization of PET Track-Etched Membranes by UV-Induced Graft (co)Polymerization for Detection of Heavy Metal Ions in Water

Contact Info

Product

Resources

About