期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 298, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2021.113466
关键词
Adsorption; PEBA; Graphene oxide; Melt electrospinning; Cationic dye; Water pollution
资金
- European Social Fund [09.3.3-LMT-K-712-19-0229]
- Research Council of Lithuania
The study showed that hosting graphene oxide particles on polyether block amide fibers can effectively adsorb dyes from water. However, increasing the graphene oxide content may affect fiber diameter and dye adsorption efficiency.
Novel highly porous nanoparticle materials are increasingly being applied in adsorption processes, but they need to be supported by robust matrixes to maintain their functionality. We present a study of hosting graphene oxide (GO) particles on polyether block amide (PEBA) melt electrospun fibers and applying such composite matrix to the adsorption of the cationic dye (crystal violet) from water. Various amounts of GO (from 0.5 to 2.0%) were mixed into pure PEBA and electrospun by melt electrospinning obtaining micro fibrous matrixes. These were characterized for morphology (SEM), chemical composition (FTIR), crystallinity (XRD), and wetting behavior (WCA). The increasing amount of GO adversely affected fiber diameter (reduced from 13.18 to 4.38 mu m), while the hydrophilic properties (Water contact angle decrease from 109 to 76 degrees) and overall dye adsorption was increased. Efficient adsorption has been demonstrated, reaching approximately 100 % removal efficiency using a 2% GO composite matrix at a dose of 40 mg/l and pH of 10. Further increase of GO concentration in polymer is not feasible due to instability in the electrospinning process.
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