Recent advances in applications for air pollutants purification and perspectives of electrospun nanofibers

Zhang, Xin; Ru, Ziwei; Sun, Yangjie; Zhang, Man; Wang, Jiancheng; Ge, Mingzheng; Liu, Hong‐Chao; Wu, Shuaishan; Cao, Chunyan; Ren, Xiurong; Mi, Jie; Feng, Yu

doi:10.1016/j.jclepro.2022.134567

Cited by 27 publications

(17 citation statements)

References 129 publications

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“…According to the result of adsorption kinetics, the most important reason influencing adsorption is chemisorption. According to this line of research, the adsorption capacity of ENM for heavy metal ions can be improved by increasing the metal chelating sites [102,103], which we believe can be implemented in the following ways: (1) doping more amino compounds into the electrospinning solution to improve the removal efficiency, but the amount of the doped compounds should be appropriate, as too much compound will lead to unsuccessful preparation of ENM or aggregation on ENM, thus reducing the adsorption efficiency of heavy metal ions; (2) surface chemical treatment of the surface of carbon nanotubes or graphene-based compounds. The surface chemical treatment uses chemical methods to introduce amino groups and other groups on the surface of the compound, mainly to increase the number of amino groups so that more amino groups react with metal ions and improve the removal efficiency of ENM.…”

Section: Summary Of Heavy Metal Removalmentioning

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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Section: Summary Of Heavy Metal Removalmentioning

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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“…In recent years, polymer-based composites show potential applications in various fields, such as monitoring, , catalysis, − and air pollutants purification . In the catalysis field, one-dimensional polymer nanofiber-supported photocatalysts are paid close attention because of the fact that the nanofibers can immobilize nanosized photocatalysts to avoid aggregation and are easy to separate and reuse. − In this work, we synthesized Na 0.5 Bi 0.5 TiO 3 -based catalysts using the solvothermal route. The phase, microstructure, elemental distribution, and catalytic activities were investigated.…”

Section: Introductionmentioning

confidence: 99%

Na_0.5Bi_0.5TiO₃:Y³⁺@PAN Nanofibers for Photocatalysis Using Synergetic Piezoelectric Effects

Yuan,

Liu,

Liu

et al. 2024

ACS Appl. Nano Mater.

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A series of Na0.5Bi0.5TiO3-based catalysts were synthesized by using the solvothermal route. The successful synthesis of catalysts was confirmed by various measurements. The influence of Y3+ doping on the band gap was revealed by the UV–visible absorbance spectra. Their photocatalytic, piezocatalytic, and piezo-photocatalytic activities were investigated by degrading methylene blue. The results show that the Y3+ doping can enhance the catalytic activity of Na0.5Bi0.5TiO3 due to the more efficient harvesting of light, and the catalytic activity can be further enhanced by the support of polyacrylonitrile nanofibers on account of the existence of more active sites. The reaction constants of Na0.5Bi0.485Y0.015TiO3 and Na0.5Bi0.485Y0.015TiO3@PAN in photocatalysis processes are 0.0075 and 0.0112 min–1, which is 1.23 and 1.84 times as many as that of Na0.5Bi0.5TiO3. In addition, the catalysts show higher catalytic activities when the catalysis is carried out at the operating condition including both simulated sunlight irradiation and ultrasonic vibration. The reaction constant of Na0.5Bi0.485Y0.015TiO3@PAN in piezo-photocatalysis is 0.0381 min–1, which is 3.09 and 6.77 times of photocatalysis and piezocatalysis. The enhanced activity results from suppression of charge carrier recombination. The radicals of •O2 – and h+ play actual roles in the catalytic processes.

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“…While various filtration materials are available, including melt-blown nonwoven fabrics, glass fibers, and electrostatically spun nanofibers, they are susceptible to environmental factors such as temperature and humidity. [7][8][9][10] Moreover, the application of these materials is limited by technical bottlenecks including single functionality, high-pressure drop, high energy consumption, and low dust-holding capacity. [11][12] Therefore, advanced materials capable of simultaneously and efficiently filtering particles and adsorbing harmful gases must be developed.…”

Section: Introductionmentioning

confidence: 99%

Electrospun‐SiO₂‐Nanofiber‐Reinforced Cellulose Aerogel Loaded with ZIF‐67 for Air Filtration and Formaldehyde Adsorption

Shao,

Han,

Niu

et al. 2023

Adv Materials Technologies

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Indoor air pollution, which is detrimental to the human respiratory, nervous, and cardiovascular systems, is of increasing concern because considerable time is spent indoors. Thus, there is an urgent need to develop improved methods for controlling indoor air pollution. In this study, electrospinning and freeze‐drying methods are used to prepare a cellulose–silica nanofiber (C‐SNF) aerogel loaded with zeolitic imidazolate framework‐67 (ZIF‐67) for use in indoor air purification systems. The C‐SNF aerogel doped with 0.75 wt.% SiO2 nanofiber (SNF) exhibits a maximum compressive stress of 8.7 MPa, which is higher than that (6.4 MPa) of a pure cellulose aerogel. The compressive modulus of the aerogel exceeds 85% of its original value after 100 compression cycles. The C‐SNF aerogel exhibits a filtration efficiency of 99.91% against 0.3 µm salt particles at 32 L min−1, which is higher than that of the pure cellulose aerogel (51.25%). Moreover, a stable removal efficiency of 99.92% toward 2.5 µm particulate matter (PM2.5) is observed after ten cycles. Notably, the addition of ZIF‐67 to C‐SNF (ZIF‐67@C‐SNF) aerogel by in situ growth method resulted in a porosity of 92.3% and formaldehyde removal of 93.75%. The ZIF‐67@C‐SNF aerogel can be used in various applications including indoor‐air and adsorptive‐filtration masks.

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Recent advances in applications for air pollutants purification and perspectives of electrospun nanofibers

Cited by 27 publications

References 129 publications

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

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

Na_0.5Bi_0.5TiO₃:Y³⁺@PAN Nanofibers for Photocatalysis Using Synergetic Piezoelectric Effects

Electrospun‐SiO₂‐Nanofiber‐Reinforced Cellulose Aerogel Loaded with ZIF‐67 for Air Filtration and Formaldehyde Adsorption

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Recent advances in applications for air pollutants purification and perspectives of electrospun nanofibers

Cited by 27 publications

References 129 publications

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

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

Na0.5Bi0.5TiO3:Y3+@PAN Nanofibers for Photocatalysis Using Synergetic Piezoelectric Effects

Electrospun‐SiO2‐Nanofiber‐Reinforced Cellulose Aerogel Loaded with ZIF‐67 for Air Filtration and Formaldehyde Adsorption

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Product

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Na_0.5Bi_0.5TiO₃:Y³⁺@PAN Nanofibers for Photocatalysis Using Synergetic Piezoelectric Effects

Electrospun‐SiO₂‐Nanofiber‐Reinforced Cellulose Aerogel Loaded with ZIF‐67 for Air Filtration and Formaldehyde Adsorption