Multifunctional electrospun CS/PVA/AgNPs nanofiber membranes for dye removal and antimicrobial water purification
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https://doi.org/10.54939/1859-1043.j.mst.109.2026.113-120Keywords:
Electrospinning; Dye removal; Antibacterial activity; Water treatment.Abstract
There is an urgent need for sustainable methods to purify water contaminated with dyes and pathogenic microorganisms. Conventional treatment technologies often face limitations due to the use of toxic chemicals or complex fabrication processes. In this study, electrospun chitosan/poly(vinyl alcohol)/silver nanoparticle (CS/PVA/AgNPs) nanofiber membranes were fabricated and evaluated for their dual functionality in dye removal and antibacterial activity. SEM, XRD, and EDS analyses confirmed the formation of quasi-spherical AgNPs and their uniform distribution within the polymer matrix. Morphological analysis revealed that the incorporation of AgNPs into the CS/PVA matrix reduced the fiber diameter from 120-230 nm to 99-158 nm and significantly decreased bead formation. Congo Red adsorption reached equilibrium within 120-150 min, with capacities increasing with dye concentration. Maximum adsorption occurred at pH 4, and the membrane retained over 60% efficiency after two regeneration cycles. Additionally, the CS/PVA/AgNPs membrane exhibited strong antibacterial activity, achieving up to 99% inhibition against Escherichia coli and Staphylococcus aureus. Overall, these results highlight the potential of CS/PVA/AgNPs nanofiber membranes as multifunctional, eco-friendly materials for simultaneous dye adsorption and antimicrobial water purification.
References
[1]. World Health Organization, “Guidelines for drinking-water quality”, , pp. 1–540, (2004).
[2]. E. Abdelrazek et al., “The accessibility of change of the structural, morphological and thermal properties by intermolecular hydrogen bonding in PEO/PVA blend containing MnCl₂”, International Journal of Modern Applied Physics, vol. 1, no. 1, pp. 83–96, (2012).
[3]. M. Koosha et al., “Electrospinning, mechanical properties, and cell behavior study of chitosan/PVA nanofibers”, Journal of Biomedical Materials Research Part A, vol. 103, no. 9, pp. 3081–3093, (2015). DOI: https://doi.org/10.1002/jbm.a.35443
[4]. H. Zheng et al., “Preparation and characterization of chitosan/poly(vinyl alcohol) blend fibers”, Journal of Applied Polymer Science, vol. 80, no. 13, pp. 2558–2565, (2001). DOI: https://doi.org/10.1002/app.1365
[5]. Elashmawi et al., “Modification and development of electrical and magnetic properties of PVA/PEO incorporated with MnCl₂”, Physica B: Condensed Matter, vol. 434, pp. 57–63, (2014). DOI: https://doi.org/10.1016/j.physb.2013.10.038
[6]. K. Selvam et al., “Polyacrylonitrile/silver nanoparticle electrospun nanocomposite matrix for bacterial filtration”, Fibers and Polymers, vol. 16, no. 6, pp. 1327–1335, (2015). DOI: https://doi.org/10.1007/s12221-015-1327-8
[7]. G. Açık et al., “Effect of polyvinyl alcohol/chitosan blend ratios on morphological, optical, and thermal properties of electrospun nanofibers”, Turkish Journal of Chemistry, vol. 43, no. 1, pp. 137–149, (2019). DOI: https://doi.org/10.3906/kim-1801-68
[8]. C. Branca et al., “Role of the OH and NH vibrational groups in polysaccharide-nanocomposite interactions: A FTIR-ATR study on chitosan and chitosan/clay films”, Polymer, vol. 99, pp. 614–622, (2016). DOI: https://doi.org/10.1016/j.polymer.2016.07.086
[9]. G. Crini et al., “Removal of CI Basic Green 4 (Malachite Green) from aqueous solutions by adsorption using cyclodextrin-based adsorbent: Kinetic and equilibrium studies”, Separation and Purification Technology, vol. 53, no. 1, pp. 97–110, (2007). DOI: https://doi.org/10.1016/j.seppur.2006.06.018
[10]. Z. Wang et al., “Highly regenerable alkali-resistant magnetic nanoparticles inspired by mussels for rapid selective dye removal offer high-efficiency environmental remediation”, Journal of Materials Chemistry A, vol. 3, no. 39, pp. 19960–19968, (2015). DOI: https://doi.org/10.1039/C5TA04840K
[11]. Albanese et al., “The effect of nanoparticle size, shape, and surface chemistry on biological systems”, Annual Review of Biomedical Engineering, vol. 14, no. 1, pp. 1–16, (2012). DOI: https://doi.org/10.1146/annurev-bioeng-071811-150124
[12]. P. Sahariah et al., “Antimicrobial chitosan and chitosan derivatives: A review of the structure–activity relationship”, Biomacromolecules, vol. 18, no. 11, pp. 3846–3868, (2017). DOI: https://doi.org/10.1021/acs.biomac.7b01058
[13]. L. Li et al., “Preparation and antibacterial properties of a composite fiber membrane material loaded with cationic antibacterial agent by electrospinning”, Nanomaterials, vol. 13, no. 3, p. 583, (2023). DOI: https://doi.org/10.3390/nano13030583
[14]. H. Sun et al., “Tissue paper-like conjugated microporous polymers film for bacteria inhibition”, Journal of Environmental Chemical Engineering, vol. 10, no. 6, p. 108933, (2022). DOI: https://doi.org/10.1016/j.jece.2022.108933
[15]. Arenas-Vivo et al., “Antiadherent AgBDC metal–organic framework coating for Escherichia coli biofilm inhibition”, Pharmaceutics, vol. 15, no. 1, p. 301, (2023). DOI: https://doi.org/10.3390/pharmaceutics15010301
