Polyethylene over magnetite-multiwalled carbon nanotubes for kerosene removal from water

Abdullah, Thamer Adnan; Juzsakova, Tatjána; Mansoor, Hadeel Salah; Salman, Ali Dawood; Rasheed, Rashed Taleb; Hafad, Sana Abdulhadi; Mallah, Muhammad Ali; Domokos, Endre; Cường, Nguyễn Xuân; Nadda, Ashok Kumar; Chang, Soon Woong; Cuong, Le Phuoc; Nguyen, Dinh Duc

doi:10.1016/j.chemosphere.2021.132310

Cited by 21 publications

(7 citation statements)

References 50 publications

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“…From Figure 2(b), it is observed that distinct peaks at 2θ = 19.2 o , 21.5 o , 23.6 o , and 28.4 o correspond to planes (110), (4.1), (3.7), and (2.8) indicative of WPE which used in this study has orthorhombic structure. 32 The presence of CNT in polymer matrix shifted peak to semi-higher 2θ with development in peak intensity especially of 0.3 and 0.5 CNT filling of the WPE/WEPDM blend representing that CNT significantly helped the orientation in the plane which could be recognized to an extraordinary aspect ratio of CNT. Consequently, accepting the influence of nanoparticles on nucleation and crystallinity improvement of such materials can be considered crucial information for quantifying structure-property relationships.…”

Section: Resultsmentioning

confidence: 91%

Novel electromagnetic interference shield developed by gamma irradiation of strengthened WPE/WEPDM thermoplastic elastomer With carbon nanotubes

Fathy

Elnaggar

Sharaf

2022

Journal of Thermoplastic Composite Materials

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Carbon nanotubes (CNTs) have established wide attention as strengthened fillers because of their excellent several characters. Nano polymers based on thermoplastic elastomer composed of waste polyethylene (WPE)/Waste ethylene propylene diene monomer (WEPDM) blended equally 50/50 wt. % and strengthened with different concentrations of CNT (0.1, 0.3, and 0.5%) were fabricated via melt mixing. The prepared specimens were exposed to various gamma radiation doses, namely 50 and 100 kGy to evaluate the impact of radiation on the Nano polymers structure. FTIR and XRD were used to track the structure and crystallinity changes of thermoplastic elastomer with CNT filling. Mechanical features including tensile strength (TS), elongation at break (E%), modulus of elasticity (EM) and hardness (Shore D) of the unirradiated and irradiated samples were evaluated. Furthermore, the dynamic mechanical properties named storage (E′) and loss modulus as well as tan delta (δ) of the fabricated specimens were measured. TGA and also DSC monitored the thermal decomposition and the melting point alterations caused by CNT reinforcement. Electromagnetic Interference (EMI) was studied for all fabricated samples as an application of shielding for radio frequency signals. In general, all the studied parameters revealed improvements of thermoplastic elastomer properties via CNT interference. Subsequent reinforcement of CNT concentrations into WPE/WEPDM produced higher shielding for radio frequency signals. Furthermore, applied gamma radiation doses improved the shielding properties of the fabricated nanocomposites.

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Section: Resultsmentioning

confidence: 91%

Novel electromagnetic interference shield developed by gamma irradiation of strengthened WPE/WEPDM thermoplastic elastomer With carbon nanotubes

Fathy

Elnaggar

Sharaf

2022

Journal of Thermoplastic Composite Materials

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“…Thereby, MWCNT diameters could reach as large as 30 nm, as compared to 0.7 to 2.0 nm for conventional SWCNTs [34]. MWCNTs are high aspect ratio materials with dimensions that are usually 100 times or higher than the SWCNTs diameter [35]. Their use and effectiveness rely not merely on aspect ratio as well as on how straight and twisted the tubes are, which in response depends on the size and severity of any imperfections in the tubes [33].…”

Section: Multi Walled Cntsmentioning

confidence: 99%

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

Abdullah,

Rasheed,

Adnan

et al. 2023

Mater. Res. Express

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Carbon nanotubes (CNTs), a type of carbonaceous material, have extremely distinctive qualities in terms of tensile strength, heat stability, electrical conductivity, catalysis, and adsorption. These properties rely on structure, length, and thickness. Carbon nanotube and metal oxide combination have been successfully used over the past few decades to create carbon nanomaterials with extraordinary features. The current study offers an outline of the developments in the theory, procedures, and chemical modification of CNT with metals or polymers. This review presents different synthesis methods of functionalized CNTs along with their properties and factors affecting their adsorption capacity. In addition, it explains the role of different functionalized CNTs in removing different metals like Pb2+, Cd2+, Cr3+, Cr6+, Ni2+, Tl+3, and Hg2+ from wastewater. The adsorption capacity of these modified CNTs is in the range of 130-180 mg/g. This review offers an essential understanding of the methods for creating multifunctional nano-hybrids for a variety of applications and future prospects of the use of nanomaterials for environmental remediation.

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“…In this context, CO 2 conversion into value-added products, such as methanol, calcium carbonates, formic acid using microbial enzymes could be effective to meet the energy demand of industries [ 14 , 157 , 158 ]. Notably, in 2020, the atmospheric CO 2 concentration was found to be 417 ppm, which critically affects human beings’ health [ 141 , 159–161 ]. Enzymes, such as carbonic anhydrase (CA), alcohol dehydrogenase (ADH), formaldehyde dehydrogenase (FaldDH), and formate dehydrogenase (FDH) have been utilized for the conversion of CO 2 into value-added products [ 3 , 162 ].…”

Section: Polymeric Matrices Immobilized Enzymes For Industrial Bio-ca...mentioning

confidence: 99%

Mechano-chemical and biological energetics of immobilized enzymes onto functionalized polymers and their applications

et al. 2022

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Enzymes of commercial importance, such as lipase, amylase, laccase, phytase, carbonic anhydrase, pectinase, maltase, glucose oxidase etc ., show multifunctional features and have been extensively used in several fields including fine chemicals, environmental, pharmaceutical, cosmetics, energy, food industry, agriculture and nutraceutical etc . The deployment of biocatalyst in harsh industrial conditions has some limitations, such as poor stability. These drawbacks can be overcome by immobilizing the enzyme in order to boost the operational stability, catalytic activity along with facilitating the reuse of biocatalyst. Nowadays, functionalized polymers and composites have gained increasing attention as an innovative material for immobilizing the industrially important enzyme. The different types of polymeric materials and composites are pectin, agarose, cellulose, nanofibers, gelatin, and chitosan. The functionalization of these materials enhances the loading capacity of the enzyme by providing more functional groups to the polymeric material and hence enhancing the enzyme immobilization efficiency. However, appropriate coordination among the functionalized polymeric materials and enzymes of interest plays an important role in producing emerging biocatalysts with improved properties. The optimal coordination at a biological, physical, and chemical level is requisite to develop an industrial biocatalyst. Bio-catalysis has become vital aspect in pharmaceutical and chemical industries for synthesis of value-added chemicals. The present review describes the current advances in enzyme immobilization on functionalized polymers and composites. Furthermore, the applications of immobilized enzymes in various sectors including bioremediation, biosensor and biodiesel are also discussed.

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Polyethylene over magnetite-multiwalled carbon nanotubes for kerosene removal from water

Cited by 21 publications

References 50 publications

Novel electromagnetic interference shield developed by gamma irradiation of strengthened WPE/WEPDM thermoplastic elastomer With carbon nanotubes

Novel electromagnetic interference shield developed by gamma irradiation of strengthened WPE/WEPDM thermoplastic elastomer With carbon nanotubes

A comprehensive review of the application of modified carbon nanotubes (CNTs) for the removal of metals from wastewater

Mechano-chemical and biological energetics of immobilized enzymes onto functionalized polymers and their applications

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