N-vinylpyrrolidone/acrylic acid/2-acrylamido-2-methylpropane sulfonic acid based hydrogels: Synthesis, characterization and their application in the removal of heavy metals

Yetimoğlu, Ece Kök; Kahraman, Memet Vezi̇r; Ercan, Oezgen; Akdemir, Zümrüt Seden; Kayaman‐Apohan, Nilhan

doi:10.1016/j.reactfunctpolym.2007.02.007

Cited by 150 publications

(69 citation statements)

References 24 publications

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“…Furthermore, the peak at 1635.5 cm −1 can be attributed to the vibration of the nitrogen atoms (Constable, 1990;Clothup and Daly, 1990;Jin and Bai, 2002). Yetimoǧlu et al (2007) has stated that the characteristic absorption peak of SO group in AMPS can be seen at 950-1040 cm −1 . It is possible that the peak of SO group overlapped with other groups in the strong broad band at the wavenumber region of 950-1200 cm −1 .…”

Section: Adsorption Isotherm Of Cu 2+ Onto Amps-silicamentioning

confidence: 99%

“…Besides amine group, there are also other functional groups, such as iminodiacetic, thiol, carboxyl and sulfonic groups, which can bind heavy metal ions. Therefore, some new adsorbents which containing above functional groups had been prepared and used in heavy metal removal from aqueous solution (Chen and Yang, 2006;Gad, 2008;Liu et al, 2008;Yetimoǧlu et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Wang

Kang

Liu

et al. 2009

Journal of Environmental Sciences

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A novel adsorbent (AMPS-silica) was synthesized by bounding AMPS (2-acrylamido-2-methylpropanesulfonic acid) onto silica surface, which functioned with γ-methacryloxypropyltrimethoxysilane reagent. The adsorbent was characterized by nitrogen adsorption/desorption measurement, thermogravimetric analysis (TGA) and potentiometric titration analysis. The TGA result indicated that the surface modification reactions introduced some organic functional groups onto the surface of silica. The surface area of AMPSsilica was 389.7 m 2 /g. The adsorbent was examined for copper ion removal in series of batch adsorption experiments. Results showed that the adsorption of Cu 2+ onto AMPS-silica was pH dependent, and the adsorption capacity increased with increasing pH from 2 to 6. The adsorption kinetics showed that Cu 2+ adsorption was fast and the data fitted well with a pseudo second-order kinetic model. The adsorption of Cu 2+ onto AMPS-silica obeyed both Freundlich and Langmuir isotherms, with r 2 = 0.993 and r 2 = 0.984, respectively. The maximum Cu 2+ adsorption capacity was 19.9 mg/g. The involved mechanism might be the adsorption through metal binding with organic functional groups such as carboxyl, amino and sulfonic groups. Cu 2+ loaded on AMPS-silica could be desorbed in HNO 3 solution, and the adsorption properties remain stable after three adsorption-desorption cycles.

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Section: Adsorption Isotherm Of Cu 2+ Onto Amps-silicamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Wang

Kang

Liu

et al. 2009

Journal of Environmental Sciences

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“…Due to its swell-ing ability in water, hydrophilicity, biocompatibility, and no toxicity, hydrogels have been utilized in a wide range of biological, medical, pharmaceutical, environmental applications [8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, they have been in several studies such as "for water purification [8], for removal of some dyes from aqueous solutions [9,11,[15][16][17][18], for removal of toxic metal ions with magnetic hydrogels [10], for uptake of metal ions from aqueous solutions [10,11,13,18], for uptake of uranyl ions from aqueous solutions [12,18] "as water purification agents.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent

Karadağ¹,

Kundakcı²,

Üzüm³

2011

JEAS

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The aim of this study was to investigate the equilibrium swelling and sorption properties of chemically crosslinked copolymeric hydrogels as biopotential sorbent consisting of acrylamide (AAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS). Semi-interpenetrating polymer network (semi IPNs) hydrogel, composed of AAm with AMPS as co-monomer, with poly (ethylene glycol) (PEG) and a multifunctional crosslinker such as trimethylolpropane triacrylate (TMPTA) was prepared. AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were synthesized by free radical solution polymerization by using ammonium persulphate (APS)/N,N,N',N'-tetramethylethylenediamine (TEMED) as redox initiating pair. Swelling experiments were performed in water, 0.01 M and 0.03 M aqueous urea solutions at 25˚C, gravimetrically. The hydrogels showed enormous swelling in aqueous urea/water medium and displayed swelling characteristics that were highly depended on the chemical composition of the hydrogels. FTIR spectroscopy was used to identify the presence of different repeating units in the semi IPNs. Some swelling and diffusion characteristics were calculated for different semi IPNs and hydrogels prepared under various formulations. For sorption of cationic dye, Lauths violet into the hydrogels was studied by batch sorption technique at 25˚C. Dye removal capacity, adsorption percentage and partition coefficient of the hydrogels was investigated. Swelling and dye sorption properties of AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were investigated as a function of chemical composition of the hydrogels.

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Water and Dye Uptake Studies of Acrylamide/4‐Styrenesulfonic Acid Sodium Salt Copolymers and Semi‐Interpenetrating Polymer Networks Composed of Gelatin and/or PVA

Karadağ

Kundakcı

2012

Adv Polym Technol

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Gelatin (GEL) and poly(vinyl alcohol) (PVA) based semi-interpenetrating polymer network (semi-IPN) hydrogels were prepared as a water adsorbent for cationic dye (methyl violet, MV) sorption. For this case, chemically cross-linked copolymer of an acrylamide/4-styrenesulfonic acid sodium salt (AAm/SSS) copolymer with PVA and/or GEL was prepared by polymerization of aqueous solution of acrylamide (AAm) and 4-styrenesulfonic acid sodium salt (SSS) using ammonium persulfate/N,N,N',N'-tetramethylethylenediamine as a redox initiating pair in the presence of poly(ethylene glycol)diacrylate as a cross-linker. FT-IR analysis was used to identify the presence of different repeating units in the semi-IPNs. Surface morphology was characterized by using a scanning electron microscopy technique. Some swelling and diffusion characteristics were calculated for

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N-vinylpyrrolidone/acrylic acid/2-acrylamido-2-methylpropane sulfonic acid based hydrogels: Synthesis, characterization and their application in the removal of heavy metals

Cited by 150 publications

References 24 publications

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption

Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent

Water and Dye Uptake Studies of Acrylamide/4‐Styrenesulfonic Acid Sodium Salt Copolymers and Semi‐Interpenetrating Polymer Networks Composed of Gelatin and/or PVA

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