An effective removal of methylene blue dye using polyacrylonitrile yarn waste/graphene oxide nanofibrous composite

Abstract

An electrospun nanofibrous composite mat was prepared from polyacrylonitrile yarn waste and graphene oxide. The physical and chemical properties of the nanofibrous composites were characterized using attenuated total reflections Fourier transform infrared, scanning electron microscopy, X-ray diffractometer, and TGA studies. The mean fiber diameters of the pristine polyacrylonitrile yarn waste nanofiber, polyacrylonitrile yarn waste/0.5 wt% graphene oxide, polyacrylonitrile yarn waste/1.0 wt% graphene oxide, and polyacrylonitrile yarn waste/1.5 wt% graphene oxide nanofibrous composites were in the range of 41-50, 31-40, 31-40, and 31-40 nm, respectively. The mean pore sizes of the polyacrylonitrile yarn waste nanofiber, polyacrylonitrile yarn waste/0.5 wt% graphene oxide, polyacrylonitrile yarn waste/1.0 wt% graphene oxide, and polyacrylonitrile yarn waste/1.5 wt% graphene oxide nanofibrous composites were 0.5541, 0.4533, 0.4229, and 0.4168 lm, respectively. The maximum dye removal efficiency was attained in the polyacrylonitrile yarn waste/1.5 wt% graphene oxide composite at basic pH.

Development of a Novel Mixed Titanium, Silver Oxide Polyacrylonitrile Nanofiber as a Superior Adsorbent and its Application for MB Removal in Wastewater Treatment

“…22 Polyacrylonitrile (PAN) is known as a common and environmentally stable commercial polymer, with desirable chemical, thermal properties and good solubility in organic solvents. 23,24 This polymer has been widely used in the production of nanofibers via electrospinning process. 25 Recently, PAN surface modification has been performed by many researchers using diethylenetriamine, polyethyleneimine and ethylenediamine for heavy metal ions and dye adsorption.…”

Crosslinking assisted fabrication of ultrafine poly(vinyl alcohol)/functionalized graphene electrospun nanofibers for crystal violet adsorption

“…With the high aspect ratio, thin graphene sheets typically possess high specific surface area, allowing a large number of sites for interaction with other materials. Among graphene‐related materials, reduced graphene oxide and, especially, GO were used as dye adsorbents or incorporated into polymer matrices for enhancement of the dye adsorption performance of the polymers …”

“…Previous reports in literature on polymer–graphene composite fibrous mats for dye adsorption application are limited in number . GO/chitosan composite fibers were prepared using the wet spinning method which offers relatively large fiber diameter sizes (10–20 μm) for adsorption of fuchsin acid dye dissolved in water .…”

“…GO/chitosan composite fibers were prepared using the wet spinning method which offers relatively large fiber diameter sizes (10–20 μm) for adsorption of fuchsin acid dye dissolved in water . Fabrication of nanofibros mats having finer fiber diameter sizes (<50 nm) using electrospinning has been also reported . The nanofibros composite mats, made from polyacrylonitrile yarn waste and GO, served as an efficient adsorbent for methylene blue dye in water at weak basic pH.…”

Cationic Dye Removal Using Novel Magnetic/Activated Charcoal/β-Cyclodextrin/Alginate Polymer Nanocomposite

“…Alg is biocompatible, non-toxic and contains several carboxyl and hydroxyl moieties, is able to crosslink with different polyvalent ions (like Ba 2+ , Ca 2+ and Fe 3+ ) and is easily adsorbs heavy metals [32], dyes [33] and antibiotics [34,35]. At the present, several researchers want to obtain polymer containing nanocomposites, combining polymers and magnetic particles, which have the advantage of both types of materials, increasing stability and strength [36].In recent years, the polymer nanocomposites have been acquiring a great interest due to the not so high costs of production and good removal efficiency of some dyes [37,38]. Hydrogel is a porous polymer with a three-dimension network, and its unique arrangement eases the flow of solutes to the inside.…”