Magnetic nanocomposite of multi-walled carbon nanotube as effective adsorbent for methyl violet removal from aqueous solutions: Response surface modeling and kinetic study

Ehyaee, Mona; Safa, Fariba; Shariati, Shahab

doi:10.1007/s11814-016-0353-6

Cited by 30 publications

(12 citation statements)

References 60 publications

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“…The procedure for the synthesis of the mMWCNT nanocomposite. The synthesis of mMWCNT nanocomposite was carried out by the method described previously [27]. The X-ray diffractometer pattern in Fig.…”

Section: Methodsmentioning

confidence: 99%

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Green Synthesis of Pyrazolo‐thiazolidine‐4‐ones Using Magnetic Nanocomposite of Multiwalled Carbon Nanotube

Nikpassand

Fekri

Safa

et al. 2018

Journal of Heterocyclic Chem

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Magnetic multiwalled carbon nanotube nanocomposite as a recoverable catalyst for the synthesis of novel 1,3‐thiazolidine‐4‐ones at room temperature in a one‐pot procedure without additional organic solvents. IR, 1HNMR, and 13CNMR spectroscopies and elemental analysis were used for the identification of these compounds. Moreover, the catalyst could be easily recovered by magnetic separation and recycled for five runs without significant loss of its catalytic activity. All of synthesized compounds were characterized by IR, NMR, and elemental analyses.

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Section: Methodsmentioning

confidence: 99%

“…The synthesis of mMWCNT nanocomposite was carried out by the method described previously . The X‐ray diffractometer pattern in Fig.…”

Section: Methodsmentioning

confidence: 99%

Green Synthesis of Pyrazolo‐thiazolidine‐4‐ones Using Magnetic Nanocomposite of Multiwalled Carbon Nanotube

Nikpassand

Fekri

Safa

et al. 2018

Journal of Heterocyclic Chem

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“…More recently, MWCNTs have attracted increasing attention due to their inimitable structure and excellent properties (Bahrami et al 2017a). Indeed, these materials have been favorably employed for the elimination of pollutants such as caffeine (Bahrami et al 2017a), pigments (Ehyaee et al 2017), heavy metals (Iannazzo et al 2017) and pharmaceuticals products (Wang et al 2016), amongst others.…”

Section: Introductionmentioning

confidence: 99%

A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study

Amiri

Bahrami

Beigzadeh

et al. 2018

Environ Sci Pollut Res

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The potential of a granular activated carbon (GAC), a rice husk biochar (BRH) and multiwalled carbon nanotubes (MWCNTs) for removing 2,4-dichlorophenoxyacetic acid (2,4-D) from simulated wastewater and drainage water has been evaluated. In this regard, a response surface methodology (RSM) with a central composite design (CCD) (CCD-RSM design) was used to optimize the removal of 2,4-D from simulated wastewater under different operational parameters. The maximum adsorption capacities followed the order GAC > BRH > MWCNTs, whereas the equilibrium time increased in the order MWCNTs < GAC < BRH. In the case of GAC and BRH, the 2,4-D removal percentage increased significantly upon increasing the adsorbent dosage and temperature and decreased upon increasing the initial 2,4-D concentration and pH. The results showed that the contact time and temperature were not important as regards the adsorption efficiency of 2,4-D by MWCNTs, whereas rapid removal of 2,4-D from simulated wastewater was achieved within the first 5 min of contact with the MWCNTs. The results confirmed that the Freundlich isotherm model with the highest coefficient of determination (R 2 ) and the lowest standard error of the estimate (SEE) satisfactorily fitted the 2,4-D experimental data. In addition, successful usage of the three adsorbents investigated was observed for removal of 2,4-D from drainage water from an agricultural drainage system. An economic analysis with a rate of return (ROR) method indicated that BRH could be used as an eco-friendly, low-cost, versatile and high adsorption capacity alternative to GAC and MWCNTs for the removal of 2,4-D.

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“…Many researchers have used the MNPs with or without surface modification for dye, lignin and metal ions . Also, some studies show the applicability of magnetite modified carbon nanotubes for removal of dye pollutants from natural waste . Also, MNPs are used as catalyst in different organic synthesis, for example amino functionalized nano Fe 3 O 4 @SiO 2 as a magnetically green catalyst for the one‐pot synthesis of spirooxindoles under mild conditions …”

Section: Introductionmentioning

confidence: 99%

“…[26] Also, some studies show the applicability of magnetite modified carbon nanotubes for removal of dye pollutants from natural waste. [27,28] Also, MNPs are used as catalyst in different organic synthesis, [29][30][31][32][33] for example amino functionalized nano Fe 3 O 4 @SiO 2 as a magnetically green catalyst for the one-pot synthesis of spirooxindoles under mild conditions. [34] In this study, propyl aminopyridine functionalized MNPs were synthesized via chemical reaction of 2-aminopyridine with chloropropyl functionalized magnetite nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of propyl aminopyridine modified magnetite nanoparticles for cadmium (II) adsorption in aqueous solutions

Rad

Kefayati

Shariati

2018

Applied Organom Chemis

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In this study, 2‐aminopyridine functionalized magnetite nanoparticles were chemically synthesized and used for removing Cd2+ ions from aqueous solutions. The synthesized nanoparticles were characterized by Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive analysis of X‐rays (EDX), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The SEM results showed the synthesized magnetite nanoparticles have particle size around 26 nm. The effects of several variables including solution pH and volume, adsorbent mass, ionic strength and contact time on the Cd2+ adsorption were studied in batch experiments and finally the optimum conditions for adsorption were obtained. The kinetic data were investigated by pseudo‐ first‐order, pseudo‐ second‐order, intraparticle diffusion and Elovich kinetic models and data were described reasonably by pseudo‐ second‐order model (R2 = 0.9996) with qe = 2.31 mg g−1. Adsorption data were analyzed using Langmuir, Freundlich and Temkin isotherm models. The results indicated that the data were well fitted to the Freundlich isotherm model (R2 = 0.9907). After study the possible interference effect of foreign ions on Cd2+ removal, the applicability of the proposed nanoparticles for adsorption from real samples confirmed the successfully removal of Cd2+ ions with removal efficiency higher than 92%. The obtained results showed that the synthesized nanoparticles as a reusable adsorbent can act as a good choice for Cd2+ removal with an easy procedure.

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Magnetic nanocomposite of multi-walled carbon nanotube as effective adsorbent for methyl violet removal from aqueous solutions: Response surface modeling and kinetic study

Cited by 30 publications

References 60 publications

Green Synthesis of Pyrazolo‐thiazolidine‐4‐ones Using Magnetic Nanocomposite of Multiwalled Carbon Nanotube

Green Synthesis of Pyrazolo‐thiazolidine‐4‐ones Using Magnetic Nanocomposite of Multiwalled Carbon Nanotube

A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study

Synthesis of propyl aminopyridine modified magnetite nanoparticles for cadmium (II) adsorption in aqueous solutions

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