Multi-walled carbon nanotubes modified with iron oxide and silver nanoparticles (MWCNT-Fe3O4/Ag) as a novel adsorbent for determining PAEs in carbonated soft drinks using magnetic SPE-GC/MS method

Moazzen, Mojtaba; Khaneghah, Amin Mousavi; Shariatifar, Nabi; Ahmadloo, Mahsa; Eş, Ismail; Baghani, Abbas Norouzian; Yousefinejad, Saeed; Alimohammadi, Mahmood; Azari, Ali; Dobaradaran, Sina; Rastkari, Noushin; Nazmara, Shahrokh; Delikhoon, Mahdieh; Khaniki, Gholamreza Jahed

doi:10.1016/j.arabjc.2018.03.003

Cited by 109 publications

(56 citation statements)

References 38 publications

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“…Three of the remaining diffraction lines correspond to Fe 3 O 4 at 2θ of 35.9, 43.6 and, 50.6°(JCPDS No 19-0629) (Yu & Kwak 2010), where the diffraction line at 2θ of 44.7°c orresponded to α-Fe phase (JCPDS No 06-0696) (Yao et al 2017b) (Kramm et al 2012). The CNTs sample also showed the two diffraction peaks which corresponded for the MWCNTs at 2θ of 26.6°(002 plane), which also could be observed in a hexagonal graphite along with the diffraction line at 2θ of 43.6°(100 plane) (JCPDS No 01-0646) (Güler 2014) (Moazzen et al 2019).…”

Section: Resultsmentioning

confidence: 96%

Production and characterisation of activated carbon and carbon nanotubes from potato peel waste and their application in heavy metal removal.

Osman

Blewitt²,

Abu‐Dahrieh³

et al. 2019

Environ Sci Pollut Res

108

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Herein, activated carbon (AC) and carbon nanotubes (CNTs) were synthesised from potato peel waste (PPW). Different ACs were synthesised via two activation steps: firstly, with phosphoric acid (designated PP) and then using potassium hydroxide (designated PK). The AC produced after the two activation steps showed a surface area as high as 833 m 2 g −1 with a pore volume of 0.44 cm 3 g −1 , where the raw material of PPW showed a surface area < 4 m 2 g −1. This can help aid and facilitate the concept of the circular economy by effectively up-cycling and valorising waste lignocellulosic biomass such as potato peel waste to high surface area AC and subsequently, multi-walled carbon nanotubes (MWCNTs). Consequently, MWCNTs were prepared from the produced AC by mixing it with the nitrogen-based material melamine and iron precursor, iron (III) oxalate hexahydrate. This produced hydrophilic multi-wall carbon nanotubes (MWCNTs) with a water contact angle of θ = 14.97°. Both AC and CNT materials were used in heavy metal removal (HMR) where the maximum lead absorption was observed for sample PK with a 84% removal capacity after the first hour of testing. This result signifies that the synthesis of these up-cycled materials can have applications in areas such as wastewater treatment or other conventional AC/CNT end uses with a rapid cycle time in a twofold approach to improve the eco-friendly synthesis of such value-added products and the circular economy from a significant waste stream, i.e., PPW.

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Section: Resultsmentioning

confidence: 96%

Production and characterisation of activated carbon and carbon nanotubes from potato peel waste and their application in heavy metal removal.

Osman

Blewitt²,

Abu‐Dahrieh³

et al. 2019

Environ Sci Pollut Res

108

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“…Magnetic graphene oxide can be attracted by an external magnetic field, consequently solving this problem [21][22][23]. Magnetic adsorbents simplify the separation process, make it stronger and faster without the necessity of any additional filtration or centrifugation techniques, which resulted in the elimination of time-consuming process in the preparation of traditional adsorbents [24,25]. 2-mercaptobenzothiazole is a chelating ligand which can improve the removal performance of magnetic graphene oxide nanocomposites by creating very high metal binding capabilities [5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of magnetic graphene oxide nanocomposites functionalized with a novel chelating ligand for the removal of Cr(VI): Modeling, optimization, and adsorption studies

Sheikhmohammadi¹,

Mohseni²,

Hashemzadeh³

et al. 2019

Desalination and Water Treatment

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In this study, the performance of magnetic graphene oxide (GO-Fe 3 O 4) functionalized with 2-mercaptobenzothiazole (MBT) chelating ligand was investigated as a new adsorbent for the adsorption of Cr(VI) from aqueous solutions. The magnetic graphene oxide functionalized with chelating ligand of the 2-mercaptobenzothiazole (GFM) was freshly synthesized via a two-stage process, and characterized by energy dispersive X-ray (EDAX), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), scanning electron microscope (SEM) images and thermogravimetric analysis (TGA). The composition effect of independent input factors and one dependent output response was investigated using a central composite design under response surface methodology (RSM). The full second-order model indicated a model well-fitted with the experimental data. The optimum operating points giving maximum Cr(VI) removal (94.02) included pH, 6.79; adsorbent dosage, 2.98 g L-1 ; contact time, 118.6 min; and Cr(VI) concentration, 4.41 mg L-1. Based on the reported results, magnetic graphene oxide functionalized with 2-mercaptobenzothiazole (GFM) chelating ligand indicated best fit with the Langmuir model. The kinetic models followed the pseudo-first-order model. The thermodynamic studies indicated that the sorption of Cr(VI) onto GFM was endothermic and spontaneous.

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“…Strong diffraction peaks at 2θ = 26.2° corresponding to the MWCNTs as per XRD standards (JCPDS No. 01-0646) were observed [32]. The obtained XRD pattern provides clear evidence for the presence of MWCNTs in the fabricated hybrid composite.…”

Section: Preparation Of Nanocompositesmentioning

confidence: 63%

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

Vijayan

Rajmohan

2019

J Braz. Soc. Mech. Sci. Eng.

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Among the various classifications of fiber-reinforced polymer composites, carbon fiber-reinforced plastic (CFRP) composite materials have great potential in aerospace, automobile and marine industries. Drilling is a common machining process of CFRP composites. Surface delamination, tearing, abrasion, denting, cutting of fibers, formation of voids, fiber bending and pullout, etc. are significant problems that occur in the drilling of CFRP composites, among which surface delamination is identified as a critical issue. By optimizing the drilling parameters, the effect of delamination can be minimized, resulting in good quality holes. The drilling process involves several critical process parameters. Therefore, achieving accurate holes during the process is extremely difficult. Three significant drilling process parameters were considered in the present investigation aimed at achieving an optimum drilling response: the thrust force and entry and exit delamination factors. An integrated response surface methodology-based particle swarm algorithm was used to obtain optimal drilling parameters. The obtained optimal settings for CFRP drilling are a drilling speed of 1100 rpm, a feed rate of 5 mm/rev, 5% CNTs and a 110° point angle. The high feed rate increases the thrust force and entry and exit delamination factors in the drilling of fabricated hybrid nano-CNT/CFRP composites.

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Multi-walled carbon nanotubes modified with iron oxide and silver nanoparticles (MWCNT-Fe3O4/Ag) as a novel adsorbent for determining PAEs in carbonated soft drinks using magnetic SPE-GC/MS method

Cited by 109 publications

References 38 publications

Production and characterisation of activated carbon and carbon nanotubes from potato peel waste and their application in heavy metal removal.

Production and characterisation of activated carbon and carbon nanotubes from potato peel waste and their application in heavy metal removal.

Fabrication of magnetic graphene oxide nanocomposites functionalized with a novel chelating ligand for the removal of Cr(VI): Modeling, optimization, and adsorption studies

Modeling and evolutionary computation on drilling of carbon fiber-reinforced polymer nanocomposite: an integrated approach using RSM based PSO

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