Poly(vinyl alcohol) nanofibrous membranes via green electrospinning and tannin coating for selective removal of Pb(II) ion

Lee, Su Yeon; Jeong, Young Jin; Park, Won Ho

doi:10.1016/j.chemosphere.2022.135719

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…The results indicated that the Ag NPs’ specific surface area of TA 5 -PFRN@Ag catalyst is 2.82 times that of the PFRN@Ag catalyst. In addition, the abundant phenolic–OH groups on the TA coating can adsorbed the hydrophilic/benzene rings-containing reactions via H-bonding and π–π interactions. − Meanwhile, the easily ionized phenolic–OH groups can make the surface of TA-PFRN@Ag catalysts show negative charges (−31.3 mV), and then the reactants can be adsorbed to the around of Ag NPs via electrostatic adsorption. Hence, the presence of TA layer makes the nanocomposites possess more adsorption sites for reactants on their Ag NPs’ surface, thereby improving the catalytic efficiency.…”

Section: Resultsmentioning

confidence: 99%

Tannin-Assisted Synthesis of Nanocomposites Loaded with Silver Nanoparticles and Their Multifunctional Applications

Xia,

Jiang,

et al. 2023

Biomacromolecules

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Nanocomposites have been widely used in many important areas due to their particular physical/chemical properties; however, just though a simple technology, endowing multiple functions into a single nanomaterial for realizing their multifunctional applications is still a challenge. Here, we report a robust method for the facile synthesis of Ag-based multifunctional nanocomposites via using tannin-coated phenol–formaldehyde resin nanospheres (TA-PFRN) as silver nanoparticle (Ag NP) carriers. The thickness of the tannin coating is readily tuned from 50 to 320 nm by regulating the concentration of tannin added. Under the optimal conditions, the TA-PFRN has a 23.8 wt % of Ag NPs loading capacity with only 17.2 nm Ag NP layers. Consequently, the novel TA-PFRN@Ag nanocomposites possess multiple functions and integrated characteristics. As catalysts, the catalytic efficiency of TA-PFRN@Ag is nearly 6 times higher than that of the PFRN@Ag. As highly effective free radical initiators, TA-PFRN@Ag nanocomposites can trigger ultrafast acrylic acid (AA)/acrylamide (AM) polymerization at room temperature (in only a few minutes). As nano-reinforced fillers, the addition of 0.04 wt % nanocomposites can improve the tensile strength of PVA film from 60 to 153.2 MPa. In addition, the nanocomposites can also serve as antibacterial agents, efficiently inhibiting the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus); as antiultraviolet agents, the presence of TA-PFRN@Ag nanocomposites endows the film/hydrogel materials excellent ultraviolet (UV) shielding. This work provides a novel strategy for the green synthesis of Ag-based multifunctional nanocomposites that show promising applications in catalysis, nanomaterials, and biomedicine.

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Section: Resultsmentioning

confidence: 99%

Tannin-Assisted Synthesis of Nanocomposites Loaded with Silver Nanoparticles and Their Multifunctional Applications

Xia,

Jiang,

et al. 2023

Biomacromolecules

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“…In the past, innovative developments in electrospinning equipment and technology have enabled the functionalization of nanofibers for electrospray and multi-jet electrospinning [138]. At the same time, electrospinning technology is widely used in the preparation of ENMs due to their high porosity, ease of preparation, and high specific surface area [139]. Nanofiber membranes are also well used in industrial production for water treatment [11,140].…”

Section: Discussionmentioning

confidence: 99%

Electrospun Nanofiber Membrane: An Efficient and Environmentally Friendly Material for the Removal of Metals and Dyes

Guo

Zhang

et al. 2023

Molecules

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With the rapid development of nanotechnology, electrospun nanofiber membranes (ENM) application and preparation methods have attracted attention. With many advantages such as high specific surface area, obvious interconnected structure, and high porosity, ENM has been widely used in many fields, especially in water treatment, with more advantages. ENM solves the shortcomings of traditional means, such as low efficiency, high energy consumption, and difficulty in recycling, and it is suitable for recycling and treatment of industrial wastewater. This review begins with a description of electrospinning technology, describing the structure, preparation methods, and factors of common ENMs. At the same time, the removal of heavy metal ions and dyes by ENMs is introduced. The mechanism of ENM adsorption on heavy metal ions and dyes is chelation or electrostatic attraction, which has excellent adsorption and filtration ability for heavy metal ions and dyes, and the adsorption capacity of ENMs for heavy metal ions and dyes can be improved by increasing the metal chelation sites. Therefore, this technology and mechanism can be exploited to develop new, better, and more effective separation methods for the removal of harmful pollutants to cope with the gradually increasing water scarcity and pollution. Finally, it is hoped that this review will provide some guidance and direction for research on wastewater treatment and industrial production.

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“…Accordingly, using green solvents with slow volatility may contribute to forming a fibrous network with a minimal effect on health and the environment. Recently, several studies have focused on using aqueous polymer solutions for electrospinning applications [ 56 , 57 , 58 ]. Alternatively, biologically benign solvents, such as formic acid or acetic acid, can be used alone or in combination as green solvent candidates.…”

Section: Melt Polymers Vs Polymer Solutionmentioning

confidence: 99%

Electro Fluid Dynamics: A Route to Design Polymers and Composites for Biomedical and Bio-Sustainable Applications

et al. 2022

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In the last two decades, several processes have been explored for the development of micro and/or nanostructured substrates by sagely physically and/or chemically manipulating polymer materials. These processes have to be designed to overcome some of the limitations of the traditional ones in terms of feasibility, reproducibility, and sustainability. Herein, the primary aim of this work is to focus on the enormous potential of using a high voltage electric field to manipulate polymers from synthetic and/or natural sources for the fabrication of different devices based on elementary units, i.e., fibers or particles, with different characteristic sizes—from micro to nanoscale. Firstly, basic principles and working mechanisms will be introduced in order to correlate the effect of selected process parameters (i.e., an applied voltage) on the dimensional features of the structures. Secondly, a comprehensive overview of the recent trends and potential uses of these processes will be proposed for different biomedical and bio-sustainable application areas.

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Poly(vinyl alcohol) nanofibrous membranes via green electrospinning and tannin coating for selective removal of Pb(II) ion

Cited by 17 publications

References 29 publications

Tannin-Assisted Synthesis of Nanocomposites Loaded with Silver Nanoparticles and Their Multifunctional Applications

Tannin-Assisted Synthesis of Nanocomposites Loaded with Silver Nanoparticles and Their Multifunctional Applications

Electrospun Nanofiber Membrane: An Efficient and Environmentally Friendly Material for the Removal of Metals and Dyes

Electro Fluid Dynamics: A Route to Design Polymers and Composites for Biomedical and Bio-Sustainable Applications

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