Synthesis and characterization of a new inorganic cation-exchanger—Zr(IV) tungstomolybdate: Analytical applications for metal content determination in real sample and synthetic mixture

Nabi, Syed Ashfaq; Naushad, Mu.; Inamuddin, .

doi:10.1016/j.jhazmat.2006.08.039

Cited by 78 publications

(28 citation statements)

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“…However, there are still some major limitations. So, the efforts are continuously going on to improve the mechanical, chemical and thermal stability and their selectivity for heavy metal ions [9][10][11][12]. In this favors, the advanced composite ion exchangers with nanodomain have also been given consideration to summarize the desired properties of both inorganic and organic counter parts into single molecule.…”

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confidence: 99%

“…In this favors, the advanced composite ion exchangers with nanodomain have also been given consideration to summarize the desired properties of both inorganic and organic counter parts into single molecule. These nanocomposite ion exchangers have been developed by adding organic polymer into the matrix of inorganic precipitates by sol-gel method and have been used in environmental applications [4,[9][10][11][12][13]. Water pollution by heavy metals is an important environmental concern which is related negatively with the health and economy.…”

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Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

et al. 2015

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ion exchangers to obtain the material with desirable ion exchange properties, reproducibility and stability [1,2]. In the past few decades, a number of ion exchanger materials have been synthesized. The inorganic ion exchangers are thermally stable, while organic ion exchangers have good mechanical and chemical strength and can be applied for the treatment of large volume of waste effluents. By combining these two different materials having entirely different properties, composite ion exchanger materials are produced with unique properties which are distinct from the constituent's material. In addition to other advantages, composite ion exchangers are more stable at high temperature and radiation fields [3]. The composite ion exchangers exhibit enhanced characteristics by bridging the property gap between two divergent types of materials [4,5]. Thus, the composite ion exchanger materials have been utilized for diverse applications such as quantitative estimations by ion selective electrodes, catalysis, antimicrobial activity, bimolecular separations, chromatography, hydrometallurgy and environmental science [4][5][6][7][8]. However, there are still some major limitations. So, the efforts are continuously going on to improve the mechanical, chemical and thermal stability and their selectivity for heavy metal ions [9][10][11][12]. In this favors, the advanced composite ion exchangers with nanodomain have also been given consideration to summarize the desired properties of both inorganic and organic counter parts into single molecule. These nanocomposite ion exchangers have been developed by adding organic polymer into the matrix of inorganic precipitates by sol-gel method and have been used in environmental applications [4,[9][10][11][12][13]. Water pollution by heavy metals is an important environmental concern which is related negatively with the health and economy. Various kinds of health hazards are arising due to the contamination of heavy metals from the waste effluents of fast growing industries in the surrounding soils as well as ground and Abstract A new surfactant-based nanocomposite cation exchanger, sodium dodecyl sulfate-Th(IV) tungstate (SDS-TT) was prepared by the sol-gel method. The SDS-TT was characterized by FTIR, XRD, TGA, SEM, EDS and TEM. The distribution studies for various metal ions on SDS-TT were performed in different acidic mediums. On the basis of distribution coefficient values, SDS-TT was found to be selective for Cu 2+ metal ion. SDS-TT was successfully used for the quantitative separation of Cu 2+ from the synthetic mixture, pharmaceutical formulation and brass sample. The regeneration studies were performed which showed a decrease in the recovery of Cu 2+ from 88 to 70 % after seven consecutive cycles.

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Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

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“…As mentioned from the previous researches [9] the increment at the anionic part inside the cation exchange material enhances the ion exchange capacity of the prepared material as the replaceable hydrogen ions are attached to this group. So, our study was designed to illustrate the impact of antimonate groups present in zirconium antimonate on IEC that was prepared y using 0.5M HCl at different molar ratio.…”

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confidence: 87%

Novel Nano-Zirconium Antimonate as Cation Exchange Material for Organic Dye Pollutants Purification

Elkady¹

2015

AJAC

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Nano-zirconium antimonate was successfully prepared using two different techniques of sol-gel and homogeneous precipitation. The different preparation parameters affecting onto the two preparation techniques such as HCl concentration, reactants molar ratio and effect reaction temperature were optimized to attain cation exchange material with high ion exchange capacity and produced in nano-size structure. The different prepared samples were screened based on their ion exchange capacities. The most proper prepared sample produced from the sol-gel technique poses higher ion exchange capacity value of 3.5meq/g compared with that produced from the homogeneous precipitation that recorded ion exchange capacity of 2.8meq/g. The physico-chemical properties of the two nano-zirconium antimonate samples produced from each technique were compared using various analytical techniques such as XRD, SEM and TEM. XRD results indicated that the sample produced from the homogeneous precipitation attains high crystallinity degree compared with the amorphous sol-gel prepared sample. The morphological structure investigation evident the nano-spherical morphology for the two prepared samples. The average nano-size of the homogeneous precipitation sample of 22nm is smaller than that of the sol-gel sample that recorded 34nm. The dye decontamination behavior of the two prepared nano-zirconium antimonate samples was compared for C.I basic blue 3dye. The sol-gel prepared sample recorded higher dye decolorization of 81.5% compared with 54% for the homogeneous precipitation sample.

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“…The bands in the range 698-416 cm −1 are due to C-H bending. According to the FTIR spectra of MnO 2 (Figure 1b) (Figure 1c), the peak at ≈1417 cm −1 is due to the deformation vibration of the hydroxyl groups (M-OH deformation vibration) [41]. The broad peak at ≈514 cm −1 is attributed to the Mn-O and Mn-O-Mn vibrations [40,42].…”

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Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

et al. 2016

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CNTs/MnO 2 composite was synthesized by a coprecipitation method after preparation of carbon nanotubes (CNTs) using a chemical oxidation method and was characterized using Fourier transformer infrared (FT-IR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The synthesized CNTs/MnO 2 composite was used as a sorbent for the removal of some radionuclides ( 60 Co and 65 Zn-radioisotopes) and Cd (II) ions from aqueous solutions. Different parameters affecting the removal process including pH, contact time and metal ion concentration were investigated. Isotherm and kinetic models were studied. Adsorption data was interpreted in terms of both Freundlich and Langmuir isotherms and indicated that the CNTs/MnO 2 composite complied well with both Langmuir and Freundlich models for Zn and Cd(II) ions from loaded samples was studied using different eluents.

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Synthesis and characterization of a new inorganic cation-exchanger—Zr(IV) tungstomolybdate: Analytical applications for metal content determination in real sample and synthetic mixture

Cited by 78 publications

References 17 publications

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

Novel Nano-Zirconium Antimonate as Cation Exchange Material for Organic Dye Pollutants Purification

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

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Synthesis and characterization of a new inorganic cation-exchanger—Zr(IV) tungstomolybdate: Analytical applications for metal content determination in real sample and synthetic mixture

Cited by 78 publications

References 17 publications

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

Novel Nano-Zirconium Antimonate as Cation Exchange Material for Organic Dye Pollutants Purification

Evaluation of CNTs/MnO2 composite for adsorption of 60Co(II), 65Zn(II) and Cd(II) ions from aqueous solutions

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Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions