Chitosan-based hollow nanofiber membranes with polyvinylpyrrolidone and polyvinyl alcohol for efficient removal and filtration of organic dyes and heavy metals

Wu, Shuping; Shi, Weijian; Li, Kanghui; Cai, Jiawei; Xu, Chao; Gao, Lei; Lü, Jian; Ding, Fuyuan

doi:10.1016/j.ijbiomac.2023.124264

Cited by 65 publications

(12 citation statements)

References 55 publications

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“…However, in contrast to liposomes, nanoparticles exhibit extended stability over time and possess superior drug entrapment capabilities. The existence of amino and hydroxyl groups within the chitosan polymer structure enables the chelation of metals, facilitating their adsorption from aqueous solutions [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

The Investigation of the Production of Salt-Added Polyethylene Oxide/Chitosan Nanofibers

Varnaitė-Žuravliova,

Savest,

Baltušnikaitė-Guzaitienė

et al. 2023

Materials

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The influence of different concentrations of salt-added polyethylene oxide (PEO) on the spinnability of chitosan (CS)/PEO + NaCl blends that could be used as a component part of filters for water treatment or nanofiber membranes as well as for medical applications was investigated in this study. The morphological properties of manufactured nanofibers were analyzed as well. It was determined that an increase of PEO concentration resulted mostly in thin and round nanofibers formed during electrospinning, but the manufacturing process became complex, because many wet fibers reached the collector while spinning. Also, it was noticed that the salt was not dissolved completely in the polymer solutions and some crystals were seen in the SEM images of manufactured fiber mats. However, the addition of salt resulted in lower viscosity and better conductivity of solution and fiber mats as well. The opposite effect was observed as the concentration of PEO was increased. The orientation of produced nanofibers as well as their diameter were analyzed with commercially available software. It was determined that the results obtained by software and microscopically are repeatable. The difference among the results of diameter calculated with software and taken by microscope varied from 0% to approximately 12%. The FTIR analyses indicated that alterations in polymer concentrations or the addition of salt did not induce any discernible changes in the chemical composition or nature of the materials under investigation. The sodium chloride present in the solutions enhanced electrical properties and increased conductivity values more than 50 times for PEO solutions and six times for CS/PEO blend solutions, compared to conductivity values of solutions without salt. To assess the thermal characteristics of the PEO/CS blend nanofibers, measurements using a differential scanning calorimeter (DSC) to determine melting (Tm) and crystallization (Tc) temperatures, as well as specific heat capacities were conducted. These parameters were derived from the analysis of endothermic and exothermic peaks observed in the DSC data. It showed that all produced nanofibers were semicrystalline.

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Section: Introductionmentioning

confidence: 99%

The Investigation of the Production of Salt-Added Polyethylene Oxide/Chitosan Nanofibers

Varnaitė-Žuravliova,

Savest,

Baltušnikaitė-Guzaitienė

et al. 2023

Materials

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“…The following supporting information can be downloaded at: https: //www.mdpi.com/article/10.3390/molecules29071493/s1, Figure S1 S1: The Zeta potential of POMOF (1, 2) powder and POMOF1/PAN NFM in different dye water solvents, Table S2: Specific surface area, pore size, and pore capacity of POMOF1/PAN NFM of different proportions, Table S3: Removal efficiency of RhB, MB, and CV by different materials. References [55][56][57][58][59][60][61][62][63][64][65][66][67][68] are cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Rapid, Massive, and Green Synthesis of Polyoxometalate-Based Metal–Organic Frameworks to Fabricate POMOF/PAN Nanofiber Membranes for Selective Filtration of Cationic Dyes

Li,

Yu,

Zhang

et al. 2024

Molecules

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Developing high−efficiency membrane materials for the rapid removal of organic dyes is crucial but remains a challenge. Polyoxometalates (POMs) clusters with anionic structures are promising candidates for the removal of cationic dyes via electrostatic interactions. However, their shortcomings, such as their solubility and inability to be mass−produced, hinder their application in water pollution treatment. Here, we propose a simple and green strategy utilizing the room temperature stirring method to mass produce nanoscale polyoxometalate−based metal−organic frameworks (POMOFs) with porous rhomboid−shaped dodecahedral and hexagonal prism structures. The products were labeled as POMOF1 (POMOF-PW12) and POMOF2 (POMOF-PMo12). Subsequently, a series of x wt% POMOF1/PAN (x = 0, 3, 5, and 10) nanofiber membranes (NFMs) were prepared using electrospinning technology, where polyacrylonitrile (PAN) acts as a “glue” molecule facilitating the bonding of POMOF1 nanoparticles. The as−prepared samples were comprehensively characterized and exhibited obvious water stability, as well as rapid selective adsorption filtration performance towards cationic dyes. The 5 wt% POMOF1/PAN NFM possessed the highest removal efficiency of 96.7% for RhB, 95.8% for MB, and 86.4% for CV dyes, which realized the selective separation over 95% of positively charged dyes from the mixed solution. The adsorption mechanism was explained using FT−IR, SEM, Zeta potential, and adsorption kinetics model, which proved that separation was determined via electrostatic interaction, hydrogen bonding, and π–π interactions. Moreover, the POMOF1/PAN membrane presented an outstanding recoverable and stable removal rate after four cycles. This study provides a new direction for the systematic design and manufacture of membrane separation materials with outstanding properties for contaminant removal.

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“…After soaking in water for 48 h, virtually no loss was observed, and the adsorption capacity remained largely unchanged during five continuous cycles [124]. A chitosan/PVP/PVA hollow nanofiber membrane fabricated by coaxial electrospinning and applied for filtration of various organic dyes (malachite green, methylene blue, and crystal violet) and heavy metals (Cu 2+ , Ni 2+ , Cd 2+ , and Pb 2+ ) was studied by [138]. Using the pre-crosslinked chitosan/PVP/PVA aqueous solution as the outer fluid and the PEO aqueous solution as the inner fluid, a PEO/chitosan, PVP, and PVA core/shell fibrous membrane was prepared and ultrasonicated in deionized water (Figure 10A).…”

Section: Filtration Membranes/absorbentmentioning

confidence: 99%

Developments of Core/Shell Chitosan-Based Nanofibers by Electrospinning Techniques: A Review

Taokaew,

Chuenkaek

2024

Fibers

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This review is focused on the recent development of various chitosan-based nanofibers (membranes, patches, mats, and scaffolds) that have been designed into core and shell structures using emulsion and coaxial electrospinning techniques. Chitosan, a promising polysaccharide derived from natural sources, holds potential for diverse applications, including nanofiber production, aimed at fostering sustainability. Core/shell chitosan-based nanofibers offer appealing features, including drug encapsulation and sustained release capabilities, with a higher efficiency than uniaxial fibers. The fabrication of core/shell chitosan-based nanofibers, including the co-spinning agents and various spinning parameters, such as spinning voltage, needle size, spinning flow rate, distance from needle tip to collector, temperature, and humidity, is summarized in this work. The review also explores updated applications in various fields, such as textiles, medical dressings, drug release systems, filtration membranes, and food packaging. It highlights the current advancements in core/shell chitosan-based nanofibers produced via electrospinning techniques. The innovative insights presented in the recent literature and the challenges associated with these sustainable materials are thoroughly examined, offering valuable contributions to the field.

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Chitosan-based hollow nanofiber membranes with polyvinylpyrrolidone and polyvinyl alcohol for efficient removal and filtration of organic dyes and heavy metals

Cited by 65 publications

References 55 publications

The Investigation of the Production of Salt-Added Polyethylene Oxide/Chitosan Nanofibers

The Investigation of the Production of Salt-Added Polyethylene Oxide/Chitosan Nanofibers

Rapid, Massive, and Green Synthesis of Polyoxometalate-Based Metal–Organic Frameworks to Fabricate POMOF/PAN Nanofiber Membranes for Selective Filtration of Cationic Dyes

Developments of Core/Shell Chitosan-Based Nanofibers by Electrospinning Techniques: A Review

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