Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO₂‐NSPO)

Abstract

Three reusable and durable superhydrophobic nanofibrous filters were prepared by dip coating the nanofibrous fabric in the three different dispersed solutions of the newly modified nanoparticles (ZnO-NSPO, AlOO-NSPO, and titanium dioxide [TiO 2 ]-NSPO). The contact angle results proved that the TiO 2 -NSPO coated nanofibrous polyacrylonitrile (PAN) filter was hydrophobic with the water contact angle (WCA) of 141 while the ZnO-NSPO and AlOO-NSPO coated nanofibrous PAN filters were superhydrophobic with the WCA of 168 and 152 , respectively. The as-prepared filters can be utilized as an effective martial for oil-water separation with separation efficiency of over 98%.

Fabrication of Durable Superhydrophobic Surface for Versatile Oil/Water Separation Based on HDTMS Modified PPy/ZnO

“…In particular, the inorganic micro/nanoparticles have been used to create the roughness structure for superhydrobicity preparation, such as TiO 2 [ 16 ], SiO 2 [ 17 ], Fe 3 O 4 [ 18 ], ZnO [ 19 ], and carbon nanotubes [ 20 ]. ZnO nanoparticles have significantly attracted interests due to their low cost, accessibility, and stability in application [ 21 ]. Barthwal et al [ 22 ] introduced a superhydrophobic coating, which is composed of multi-walled carbon nanotubes/ZnO composite modified with polydimethylsiloxane.…”

Development of a superhydrophilic nanofiber membrane for oil/water emulsion separation via modification of polyacrylonitrile/polyaniline composite

“…Accordingly, the oil emulsion requires a more complex separation process due to the smaller diameter of droplets created by the surfactant agent 6 . Some of the processes including coagulation, 7 air flotation, 8 skimming, 9 flocculation 10 and membrane filtration are applied to treat oily wastewater 11 …”

PES electrospun fibrous membrane for oily wastewater treatment: Fabrication condition optimization using response surface methodology

“…Polymer solution or melt can be converted into ultrafine nanofibers and fibrous mats via simple and cost‐effective electrospinning technique. Preparation of electrospun membranes from polymers such as chitosan/poly(vinyl alcohol), 16 polytetrafluoroethylene (PTFE), 17 polyethersulfone (PES), 18 polyacrylonitrile (PAN), 19 poly(vinylidene fluoride) (PVDF), 20,21 and polysulfone 22 (PSF) and investigation of their applications in wastewater treatment have attracted the most attention during recent decades. Compared with commercial polymers, especially PVDF, PES shows less hydrophobic characteristics and its worth mentioning that hydrophilicity of PES can be manipulated much easier by surface modification and introduction of a variety of nanoparticles into the membrane matrix.…”