Immobilization of [Bmim+Tf2N−] hydrophobic ionic liquid on nano-silica-amine sorbent for implementation in solid phase extraction and removal of lead

Albishri, Hassan M.; Abdel‐Fattah, Tarek M.; Mahmoud, Mohamed E.

doi:10.1016/j.jiec.2012.01.018

Cited by 64 publications

(28 citation statements)

References 33 publications

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“…pH is one of the main factors influencing the adsorption behaviour of metal ions because the surface charge of the adsorbent is pH-dependent and also the metal ions exist in different species depending on the pH [4,29]. The effect of pH on adsorption of Cu(II) and Pb(II) on…”

Section: 2effect Of Solution Phmentioning

confidence: 99%

“…In recent years, IL modified materials such as silica [28][29][30][31], polymeric support [32], magnetic nanoparticles [33,34] or carbon nanotubes [35] have been successfully employed for the extraction of heavy metals and/or organic molecules as a solid phase in SPE. As a consequence of this, ILs lose their liquid nature but they maintain their exceptional physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

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Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Tokalıoğlu

Yavuz

Şahan

et al. 2016

Talanta

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Section: 2effect Of Solution Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Tokalıoğlu

Yavuz

Şahan

et al. 2016

Talanta

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“…Therefore, modification and providing proper surface coating for analytical application is necessary. In this case, ionic liquids (ILs) as a class of nonmolecular ionic and green compounds, which are chemically inert, stable, and nonflammable, can be employed [28,29]. As a consequence of the immobilization, ILs lose their liquid nature but they maintain their exceptional physical (thermal stability) and chemical (extraction capacity) properties.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid-modified Fe3O4 nanoparticle combined with central composite design for rapid preconcentration and determination of palladium ions

Bayat

Shemirani

Beyki

et al. 2015

Desalination and Water Treatment

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In this work, magnetic Fe 3 O 4 nanoparticles (NPs) were synthesized by ultrasonic chemical co-precipitation method. Then hydrophobic ionic liquid (IL), as a green coating agent, was deposited on the surface of synthesized NPs in order to improve their extraction capability toward Pd(II) ions as diethyldithiocarbamate (DDTC) complex. Scanning electron microscopy, thermogravimetric analysis, X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and Fourier transformed infrared (FTIR) techniques were used for characterization of the adsorbent. The adsorption rate was fast and the equilibrium time was achieved within 4 min due to the strong interaction of Pd-DDTC complex with the IL and the absence of internal diffusion resistance. The separation of the adsorbent from aqueous bulk was achieved after about 2 min by a magnet, so no centrifugation or filtration was required. The effective parameters such as pH, concentration of ligand, amount of adsorbent, and the extraction time were inspected by using a central composite design in order to identify the most important parameters and their interactions. Under optimum conditions, the detection limit was 0.82 ng mL −1 and the relative standard deviation (n = 10) was 2.8% for 100 ng mL −1 of Pd(II). The proposed method was applied for the preconcentration of Pd(II) from road dust, liver, and water samples, and it was found that the amounts of palladium ions in dust and liver samples were 104 and 8.7 ng mL −1 , respectively.

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“…Moreover, in our recently published papers (26,27) [Omim þ Tf 2 N À ] ionic liquid was loaded on the surface of nano silica and used to extract Cd(II) (26), while the surface of nano silica was modified with [Emim þ Tf 2 N À ] ionic liquid to implement in solid phase extraction of Pb(II) from water samples (27). Therefore, the collected results from our previous works (26)(27)(28) have motivated us to perform a novel and comprehensive study in order to evaluate the potential applications of 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)-imide, [Bmim þ Tf 2 N À ], hydrophobic ionic liquid-functionalized-nano silica, [Nano-Si-OHBmim þ Tf 2 N À ], for selective sorptive separation of cadmium from lead in adjusted pH aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Adjusted pH for the Selective Separation of Cadmium from Lead by Nano-Active Silica-Functionalized-[Bmim⁺Tf₂N⁻] Ionic Liquid

Mahmoud¹,

Albishri²

2013

Separation Science and Technology

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A method is described for the selective separation and extraction of cadmium-lead from aqueous solutions by tuning the pH value between 1.0 and 7.0. A modified nano-active silica sorbent was loaded with 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide hydrophobic ionic liquid, [Bmim þ Tf 2 N À ] and used in this work. The pH value was found to play a significant role in the sorption capacity of Cd(II) and Pb(II). In pH 1.0, the metal capacity values were characterized as 1.40 and 0.30 mmol g À1 for Cd(II) and Pb(II), respectively. In pH 7.0, Cd(II) and Pb(II) switched their capacity values to 0.65 and 1.00 mmol g À1 , respectively. An anion exchange mechanism was proposed in solution with pH 1.0 for exchange of chloroanionic cadmium species by [Tf 2 N À ]. The sorptive separation processes of Cd(II) and Pb(II) were studied and evaluated under the influence of various controlling factors. The potential applications of modified nano-silica sorbent for selective sorptive removal and separation of Cd(II) from Pb(II) in water samples was successfully accomplished by adjusting the pH value of the contact solution between 1.0 and 7.0. The results of this study indicated an efficient extraction behavior of the two examined metal ions.

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Immobilization of [Bmim+Tf2N−] hydrophobic ionic liquid on nano-silica-amine sorbent for implementation in solid phase extraction and removal of lead

Cited by 64 publications

References 33 publications

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Ionic liquid-modified Fe3O4 nanoparticle combined with central composite design for rapid preconcentration and determination of palladium ions

Adjusted pH for the Selective Separation of Cadmium from Lead by Nano-Active Silica-Functionalized-[Bmim⁺Tf₂N⁻] Ionic Liquid

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Immobilization of [Bmim+Tf2N−] hydrophobic ionic liquid on nano-silica-amine sorbent for implementation in solid phase extraction and removal of lead

Cited by 64 publications

References 33 publications

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Ionic liquid coated carbon nanospheres as a new adsorbent for fast solid phase extraction of trace copper and lead from sea water, wastewater, street dust and spice samples

Ionic liquid-modified Fe3O4 nanoparticle combined with central composite design for rapid preconcentration and determination of palladium ions

Adjusted pH for the Selective Separation of Cadmium from Lead by Nano-Active Silica-Functionalized-[Bmim+Tf2N−] Ionic Liquid

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Adjusted pH for the Selective Separation of Cadmium from Lead by Nano-Active Silica-Functionalized-[Bmim⁺Tf₂N⁻] Ionic Liquid