Synthesis and application of ion-imprinted polymer nanoparticles for the extraction and preconcentration of copper ions in environmental water samples

Abstract

Novel Cu(II) ion-imprinted polymers (Cu-IIP) nanoparticles were prepared by using Cu(II) ion-thiosemicarbazide complex as the template molecule and methacrylic acid, ethylene glycol dimethacrylate (EGDMA), and 2,2'azobisisobutyronitrile (AIBN) as the functional monomer, cross-linker, and the radical initiator, respectively. The synthesized polymer nanoparticles were characterized by using infrared spectroscopy (IR), thermo gravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscopic (SEM) techniques. Some parameters such as pH, weight of the polymer, adsorption time, elution time, eluent type, and eluent volume which affect the extraction efficiency of the polymer were studied. In the proposed method, the maximum sorbent capacity of the ion-imprinted polymer was calculated to be 38.8 mg g(-1). The preconcentration factor, relative standard deviation, and limit of detection of the method were found to be 80, 1.7%, and 0.003 μg mL(-1), respectively. The prepared ion-imprinted polymer nanoparticles have an increased selectivity toward Cu(II) ions over a range of competing metal ions with the same charge and similar ionic radius. The method was applied to the determination of ultra trace levels of Cu2+ in environmental water samples with satisfactory results.

Análisis De Contaminantes Ambientales Con Polímeros De Impronta Molecular

“…Las nanopartículas de polímero impregnadas de iones tienen una selectividad aumentada hacia los iones Cu (II) sobre una gama de iones metálicos competidores con la misma carga y radio iónico similar. El método se aplicó a la determinación de niveles ultra traza de Cu 2+ en muestras de agua ambiental con resultados satisfactorios (Roushani et al 2015).…”

Porphyrin based nano-sized imprinted polymer as an efficient modifier for the design of a potentiometric copper carbon paste electrode

“…14,15 IIPs can recognize the target ions with high selectivity by using their cavities or "imprinted sites" which formed in the polymeric network during synthesis. [16][17][18][19] Up to date, a variety of IIPs have been reported for separation and determination of copper ions using different complexing or chelating agents such as 1-(2-pyridylazo)-2-naphthol, 20 4-(2-pyridylazo) resorcinol, 21 salen, 22 itaconic acid, 23 thiosemicarbazide, 24 carboxybenzotriazole, 25 nmethacrylamidohistidine-dihydrate, 26 2,9-dimethyl-1,10-phenanthroline, 27 5,6,14,15-dibenzo-1,4-dioxa-8,12-diazacyclopentadecane-5,14-diene. 28 However; to the best of our knowledge, a little attention has been paid to the application of nano-scaled porphyrin based IIP as modiers in the chemically modied CPEs for potentiometric determination of Cu 2+ ion.…”

Use of Ni/NixB Nanoparticles as a Novel Adsorbent for the Preconcentration of Mercury Species prior to Cold Vapor-Atomic Fluorescence Spectrometric Determination

“…The most common methods for the determination of mercury are cold vapor atomic absorption spectrometry, 7 atomic fluorescence spectrometry, 8 X-ray fluorescence spectrometry, 9 spectrofluorometry, 10 inductively coupled plasma atomic emission or mass spectrometry, 11,12 gas chromatography, 13 neutron activation analysis, 14 near-infrared spectroscopy, 15 anodic or cathodic stripping voltammetry, 16 and ion selective electrodes. 17 The development of reliable methods for the determining mercury at (ultra)trace levels in environmental and biological materials is still of particular significance.…”