Facile 3D Boron Nitride Integrated Electrospun Nanofibrous Membranes for Purging Organic Pollutants

Abstract

Elegant integration of three-dimensional (3D) boron nitride (BN) into the porous structure of a polymer nanofiber (NF) membrane system results in a surface with enhanced absorption capacity for removal. Various BN-based applications were designed and developed successfully, but BN-based absorption systems remain relatively unexplored. To develop a reusable absorption strategy with high removal efficiency, we used a composite of 3D BN and polyacrylonitrile (PAN) to prepare a NF membrane with a porous structure by using electrospinning and spray techniques (BN-PAN ES NFs). The removal efficiency of the 3D BN NF membrane was higher than that of a pure carbon NF membrane. Water pollutants, such as the dyes Congo red (CR), basic yellow 1 (BY), and rhodamine B (Rh B), were tested, and the absorption ratios were 46%, 53%, and 45%, respectively. Furthermore, the aforementioned dyes and pollutants can be completely eliminated and removed from water by heating because of the high heat resistance of 3D BN. The membrane can be recycled and reused at least 10 times. These results indicate that BN-PAN ES NFs have can be used in water purification and treatment for absorption applications, and that they can be reused after heat treatment.

Tailoring the Surface Properties of Micro/Nanofibers Using 0D, 1D, 2D, and 3D Nanostructures: A Review on Post‐Modification Methods

“…The fibers produced by proceeding i) presented BN precursors on the exterior layers of the PAN fibers membrane, whereas ii) allowed BN on the internal and external layers of membranes. [ 179 ] According to this, simultaneous spray during spinning fabrication may lead to an efficient entrapment of BN along the PAN membrane thickness.…”

“…PAN nanofibers (NF) modified by boron nitride (BN) using spray coating followed by thermal treatment produced 3D composite membranes applied in the adsorption of the following dyes: basic yellow (BY), Congo red (CR), and Rhodamine‐B (RhB). [ 179 ] Adsorption studies carried out with pure carbon NF presented a low removal of dyes from aqueous solutions (13% CR, 30% BY, and 16% RhB). 3D BN carbon NF showed an increase in the removal efficiency capacity for all dyes studied (46% CR, 53% BY, and 45% RhB), which was ascribed to BN sheets.…”

“…3D BN carbon NF showed an increase in the removal efficiency capacity for all dyes studied (46% CR, 53% BY, and 45% RhB), which was ascribed to BN sheets. [ 179 ] Hong and co‐workers, [ 230 ] synthesized PVA/TEOS NFs and modified them by dip‐coating using Zein/FeCl 3 /NiCl 2 varying the salt concentrations (0.5%, 1%, 2%, 4%, and 8%) in zein solution. These PVA/TEOS NFs modified with Zein/FeCl 3 /NiCl 2 were subject to thermal treatment, originating a magnetic nickel ferrite@silica nanofibrous (NiFe@SNF).…”

Antibacterial Activity and Protection Efficiency of Polyvinyl Butyral Nanofibrous Membrane Containing Thymol Prepared through Vertical Electrospinning

“…Therefore, polytetrafluoroethylene membranes [ 7 ] or polyvinyl butyral (PVB) can be used as the matrix for preparing nanofiber membranes through electrospinning. Nanofibers have small diameter, high porosity, and internal pores [ 8 , 9 , 10 , 11 , 12 , 13 ], so they have favorable connectivity and high air permeability [ 14 , 15 , 16 , 17 , 18 ], which are conducive to capturing ultrafine particles. Nanofibers thus have high efficiency in filtering PM [ 19 , 20 ].…”

Light Down-Converter Based on Luminescent Nanofibers from the Blending of Conjugated Rod-Coil Block Copolymers and Perovskite through Electrospinning

“…To increase the viscosity of the di-block copolymers, which facilitates electrospinning, we synthesized PF-b-PBA with high molecular weight by combining Suzuki-Miyaura coupling polymerization for the PF block and atom transfer radical polymerization (ATRP) for the PBA block. Owing to the multifunction of electrospinning, we applied on an LED chip by using a nanofiber mat, which we fabricated via electrospinning [45][46][47][48][49][50][51]. The effects of the nanofiber mat prepared through electrospinning from PF-b-PBA blended with perovskite (CsPbBr 3 ) were analyzed for deformation morphology and optical properties by using optical microscopy, UV-visible spectrometry, spectrofluorometry (PL), and confocal microscopy.…”