Efficiency and application of poly(acryldinitrophenylamidrazone-dinitroacrylphenylhydrazine) chelating fiber for pre-concentrating and separating trace Au(III), Ru(III), In(III), Bi(III), Zr(IV), V(V), Ga(III) and Ti(IV) from solution samples

Chang, Xijun; Su, Qingqiao; Liang, Dongying; Wei, Xinjie; Wang, Bingtao

doi:10.1016/s0039-9140(02)00032-2

Cited by 40 publications

(19 citation statements)

References 7 publications

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“…In addition, a membrane system has become a practical alternative to the bead system conventionally used for adsorption and separation in facile handling. Many researchers have reported on the adsorption of various metal ions on the chelating membranes, 16 -18 fibers, 27 and beads or resins. 20 -26 However, little was reported on the dependence of metal ion adsorption on chelating-functional group density, pH value, and temperature and the cyclic adsorption-desorption process for their reuse.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Yamada

Nagano

Hirata

2005

J of Applied Polymer Sci

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ABSTRACT:The chelating membranes for adsorption of metal ions were prepared by the photografting of glycidyl methacrylate (GMA) onto a polyethylene (PE) film and the subsequent modification of the resultant GMA-grafted PE (PE-g-PGMA) films with disodium iminodiacetate in an aqueous solution of 55% DMSO at 80°C. The adsorption and desorption properties of the iminodiacetate (IDA) groupappended PE-g-PGMA (IDA-(PE-g-PGMA)) films to Cu ions were almost the same in each cyclic process of adsorption in a CuCl 2 buffer at pH 5.0 and desorption in an aqueous 1.0M HCl solution. These results indicate that the IDA-(PE-g-PGMA) films can be applied to a repeatedly generative chelating membrane for adsorption and desorption of metal ions.

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Section: Introductionmentioning

confidence: 99%

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Yamada

Nagano

Hirata

2005

J of Applied Polymer Sci

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“…The preparation of PAN-DNPH fiber involved the conversion of the nitrile groups presented in the PAN fiber to the DNPH groups by using 2,4-DNPH as described by Chang et al [14]. A 0.5 g piece of es-PAN nanofiber mats or c-PAN fibers were immersed in a flask containing 50 mL of 4 % (w/v) of 2,4-DNPH in 1,2-ethandiol solution and sealed.…”

Section: Preparation Of Pan-dnph Fibers and Nanofiber Matsmentioning

confidence: 99%

“…adsorption onto es-PAN-DNPH chelating nanofiber mats DNPH modified-PAN showed relatively high recoveries (more than 92%) of trace metal ions (Au, Ru, In, Bi, Zr, V, Ga, and Ti ions) at pH 4-5 [14]. Thus, the pH range of 2-6 and pH 4.5 were employed to study the effect of the initial pH on the adsorption of Ag(I), Bi(III), Ga(III), and In(III) onto the es-PAN-DNPH chelating nanofiber mats.…”

Section: Effect Of Initial Ph On Metal Ionsmentioning

confidence: 99%

“…Fibrous ion-exchangers are characterized by a high specific surface site, good kinetic properties, and a ready-made structure of a variety of fibers for different fabrications [10,11]. Most acrylonitrile-based synthetic fiber is made by reactions with specific aqueous reagents -2-aminoimidazole [12], aminourea [13], 2,4-dinitrophenylhydrazine [14], phenylhydrazine [15], and ethylenediamine [16] -to yield polyfunctional fibers for pre-concentration and separation of trace metal ions. Polymers based on the acrylonitrile group present reactive pendant cyano groups which can readily be modified by different kinds of reagents through nucleophilic addition and cyclo addition reactions [9].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the electrically charged jet travels in a straight flight for a short distance before bending and splitting into ultrafine fibers, which randomly deposit in nonwoven patterns [37]. In the present study, electrospun poly(acryldinitrophenylamidrazone-ditnitro acrylphenylhydrazine) nanofibers mat (es-PAN-DNPH nanofiber mats) were prepared by chemical modification of the electrospun polyacrylonitrile (es-PAN), and conventional polyacrylonitrile (c-PAN) with 2,4-dinitrophenylhydrazine (DNPH) through a one-step process [14]. The es-PAN-DNPH chelating nanofiber mats possessed a large surface to volume mass.…”

Section: Introductionmentioning

confidence: 99%

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Metal adsorption behavior of 2,4-dinitrophenyl hydrazine modified polyacrylonitrile nanofibers

Jitjaicham¹,

Kampalanonwat²,

Supaphol³

2013

Express Polym. Lett.

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Abstract. Electrospun polyacrylonitrile nanofiber mats (es-PAN nanofiber mats) were surface modified by 2,4-dinitrophenyl-hydrazine (2,4-DNPH) to yield the metal ion adsorption material (es-PAN-DNPH nanofiber mats) and were investigated their adsorption behaviors. Functional modification of the es-PAN nanofiber mats and conventional polyacrylonitrile fibers (c-PAN fibers) were prepared by using 4% (w/v) of 2,4-DNPH in 1,2-ethandiol at 110°C for 6 h to obtained c-PAN-DNPH fibers. The average diameter of the es-PAN-DNPH nanofiber mats was 0.25 !m, which was comparatively smaller than the es-PAN precursor. Their functional groups were confirmed by Fourier transform infrared spectroscopy (FT-IR) and their adsorption behaviors to trace Ag(I), Bi(III), Ga(III), and In(III) from aqueous solutions and were investigated by the induced couple plasma technique. The FT-IR spectra showed the existence of NN=C-NHNH-, O=C-NHNH-, and -NO 2 functional groups for metal complexes. The adsorption capacities of the obtained es-PAN-DNPH were 7.14 to 36.36% higher than those of c-PAN-DNPH fibers. All adsorption plots onto es-PAN-DNPH nanofiber mats and c-PAN-DNPH fibers followed the Langmuir isotherm and indicated monolayer adsorption characteristics.

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Adsorption and desorption properties of grafted polyethylene films modified with polyethylenimine chains

Yamada

Saitoh

Haga

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:The chelating membranes for adsorption of metal ions were prepared by the bonding of linear and branched polyethylenimines (LPEI and BPEI) on the glycidyl methacrylate (GMA) photografted porous polyethylene (pPE) (pPE-g-PGMA) films. The adsorption and desorption properties of LPEI and BPEI-bonded pPE-g-PGMA (LPEI-(pPE-g-PGMA) and (BPEI-(pPE-g-PGMA)) films to Cu 2þ ions were investigated as a function of the grafted amount, amount of bonded PEI, molecular mass of PEI, pH value, and temperature. The amounts of LPEI and BPEI bonded to the pPE-g-PGMA films increased over the reaction time, and the bonding of LPEI and BPEI offered the water-absorptivity to the pPE-g-PGMA films. The amount of adsorbed Cu 2þ ions at pH 5.0 had the maximum value at the grafted amount of 10 mmol/g for the (LDPEI-(pPE-g-PGMA) and (BPEI-(pPE-g-PGMA) films with a constant amount of bonded PEI. The amount of adsorbed Cu 2þ ions for the LPEI-(pPE-g-PGMA) films was higher than that for the BPEI-(pPE-g-PGMA) films. The amount of Cu 2þ ions desorbed from the LPEI-(pPE-g-PGMA) and BPEI-(pPE-g-PGMA) films increased with an increase in the HCl concentration. The quantities of Cu 2þ ions of about 100% were desorbed in the aqueous HCl solutions of more than 0.1M for the LPEI-(pPE-g-PGMA) films and more than 0.05M for the BPEI-(pPE-g-PGMA) films. The amounts of adsorbed Cu 2þ ions were almost the same in each adsorption process at pH 5.0. This indicates that the LPEI-(pPE-g-PGMA) and BPEI-(pPE-g-PGMA) films can be applied to a repeatedly generative chelating membrane for adsorption and desorption of metal ions.

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Efficiency and application of poly(acryldinitrophenylamidrazone-dinitroacrylphenylhydrazine) chelating fiber for pre-concentrating and separating trace Au(III), Ru(III), In(III), Bi(III), Zr(IV), V(V), Ga(III) and Ti(IV) from solution samples

Cited by 40 publications

References 7 publications

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Metal adsorption behavior of 2,4-dinitrophenyl hydrazine modified polyacrylonitrile nanofibers

Adsorption and desorption properties of grafted polyethylene films modified with polyethylenimine chains

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