Removal of oil from water using magnetic bicomponent composite nanofibers fabricated by electrospinning

Abstract

a b s t r a c tIn the present study, a magnetic nanofibrous composite mat composed of polystyrene (PS)/polyvinylidene fluoride (PVDF) nanofibers with selective incorporation of iron oxide (Fe 3 O 4 ) nanoparticles (NPs) on/in PS was successfully prepared via a facile two-nozzle electrospinning process for oil-in-water separation. Field emission scanning electron microscopy and infrared spectroscopy showed the mats to be highly-porous in structure and confirmed the presence of the Fe 3 O 4 NPs on/in the nanofibers. Both PS and PVDF nanofibers exhibited oleophilic and hydrophobic properties. The results showed improved mechanical properties when PVDF was added to the composite mat compared to the pristine PS mat. In addition, the incorporation of magnetic Fe 3 O 4 NPs in the composite mat helps in the easy recovery of the mats after the oil-in-water sorption process. The composite mats showed good oil sorption capacity (35 e46 g/g) and improved mechanical property. The present electrospun magnetic PVDF/Fe 3 O 4 @PS nanofibers could be potentially useful for the efficient removal of oil in water and recovery of sorbent material.

3D Self‐Supporting Porous Magnetic Assemblies for Water Remediation and Beyond

“…[41,62,94,97,98,101,107] For one case, the hydrophobic additives can be enrolled in the fabrication process. [94,98,107] Yang et al [107] have developed an extremely facile method to prepared hydrophobic magnetic sponges by simply immersing the pristine sponges in the Fe 3 O 4 nanoparticle toluene suspension followed by combustion. During this process, in-situ carbon deposition was realized by the incomplete combustion of toluene which generates rich carbon aggregates covering all surfaces of sponges.…”

“…Fe 3 O 4 powders are frequently incorporated in the 3D assemblies by in-situ molding, [94] sol-gel transition, [42,[95][96][97] lyophilization, [43] or electrospinning, [98] so as to acquire magnetic bulk materials. For instance, Ge et al [94] produced superhydrophobic materials by directly Review wileyonlinelibrary.com mixing CNTs, polytetrafluoroethylene (PTFE), and Fe 3 O 4 powders in water/chloroform solution together, followed by drying and hot-pressing to hold the monolithic shape.…”

Transformation of iron oxides on PI electrospun membranes

“…Therefore, various hierarchical nanostructures have been fabricated by electrospinning for applications in electronics, catalysis, wastewater treatment and sensor [2][3][4][5][6][7][8].…”

In Situ Fabrication of Bi2Ti2O7/TiO2 Heterostructure Submicron Fibers for Enhanced Photocatalytic Activity

“…However, the photocatalytic performance of common composite films with a dense and smooth surface is still moderate. This is because the redox reaction occurs on the surface of catalyst film, and the surface morphology of the catalyst film plays a key role in the photocatalytic property [20–22]. Therefore, Bi 2 Ti 2 O 7 nanosheets-TiO 2 submicron fibers heterostructures were chosen as tested candidates and fabricated by using a combination of an electrospinning technique and hydrothermal method.…”