A sustainable layered nanofiber/sheet aerogels enabling repeated life cycles for effective oil/water separation

Dong, Ting; Ye, Huabiao; Wang, Wenhui; Zhang, Yuanming; Han, Guangting; Peng, Fudi; Lou, Ching‐Wen; Chi, Shan; Liu, Yanming; Liu, Cui; Lin, Jia‐Horng

doi:10.1016/j.jhazmat.2023.131474

Cited by 17 publications

(4 citation statements)

References 61 publications

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“…To assess the reusability of the SP t-shirt NFMs, their adsorption and desorption capabilities were tested using pump oil, as presented in Figure a. A five-cycle reusability test was chosen, as it is a widely accepted practice in previous studies. ,, Initially, 5 mg of the SP t-shirt NFM was immersed in pump oil for 30 min and then retrieved. The NFMs were gently compressed with paper towels, rinsed with ethanol, and air-dried overnight at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Electrospun Nanofibrous Membranes from Discarded Polyester Textiles for Oil Sorption

Ko,

Hinestroza,

Uyar

2024

ACS Appl. Polym. Mater.

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The massive amounts of textile waste generated every year emphasize an urgent need for innovative strategies to repurpose discarded textiles into valuable items. We report on the fabrication of electrospun nanofibrous membranes (NFMs) utilizing discarded polyester textiles and assessing their oil sorption capabilities. We used Spandex/polyester t-shirt and polyester t-shirt sources for the NFMs. We also used a discarded poly(ethylene terephthalate) (PET) bottle to produce NFMs. The resulting NFMs were labeled as SP t-shirt NFM, PET t-shirt NFM, and PET bottle NFM. We investigated the thermal and chemical properties of the NFMs through TGA, DSC, FTIR, and XPS analyses. The SP t-shirt NFM exhibited the highest water contact angle (WCA) of 134 ± 1°, while the WCA of the PET t-shirt NFM and PET bottle NFM were 123 ± 1 and 122 ± 1°, respectively. The SP t-shirt NFM also exhibited the highest oil sorption capacity. The sorption capacities of the SP t-shirt NFM for vegetable oil, pump oil, silicone oil, and hexane were determined to be 21.4 ± 3.3, 24.1 ± 1.0, 23.7 ± 1.3, and 15.0 ± 0.5 g g −1 , respectively. This superior oil sorption capability of the SP t-shirt NFM is attributed to the presence of Spandex traces in the nanofibers, providing a more hydrophobic content than PET, thereby enhancing oil sorption activities. The SP t-shirt NFM exhibited satisfactory reusability as oil sorbents over five cycles and demonstrated effective adsorption of pump oil from water. This study provides valuable insights into upcycling approaches for repurposing discarded textiles into functional materials, with potential applications in addressing oil pollution problems.

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Section: Resultsmentioning

confidence: 99%

Electrospun Nanofibrous Membranes from Discarded Polyester Textiles for Oil Sorption

Ko,

Hinestroza,

Uyar

2024

ACS Appl. Polym. Mater.

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“…Fiber adsorbents are fiber materials that have visible height and mainly separate by adsorption, including sponges, foams, aerogels, cotton, some fabrics, and so on. Sometimes, for ease of differentiation and understanding, the former are usually called 2D fiber materials and the latter are called 3D fiber materials 79 . Some of the reported fabrics mainly possess filter separation functions, so they are considered 2D fiber materials, while others are mainly used for good adsorption separation, so these are considered 3D fiber materials.…”

Section: Special Wettability Fibrous Filter Materialsmentioning

confidence: 99%

“…Sometimes, for ease of differentiation and understanding, the former are usually called 2D fiber materials and the latter are called 3D fiber materials. 79 Some of the reported fabrics mainly possess filter separation functions, so they are considered 2D fiber materials, while others are mainly used for good adsorption separation, so these are considered 3D fiber materials. These issues can be avoided by using fibrous filter materials with high wettability.…”

Section: Special Wettability Fibrous Filter Materialsmentioning

confidence: 99%

Bionic multifunctional fibrous materials for efficient oil/water separation

Guo

Liu

2023

Droplet

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Special wettability fibrous materials have received a lot of attention because of their good connectivity, mechanical flexibility, large specific surface area, and ease of shape manipulation. Their outstanding performance paves the way toward efficient oil/water separation in a variety of environments and for separation requirements. This paper discusses the distinct advantages, challenges, and future research directions of various substrates for fibrous materials, such as nonwoven natural biomass fibers, fabrics, electrospinning fibers, metallic fibers, and inorganic nonmetallic fibers. The special wettability fibrous filter materials and fibrous adsorbents are summarized based on the different separation methods.The principles of preparation of various special wettabilities are introduced, and the unique advantages of fibrous adsorbents are emphasized. The preparation strategy of fibrous filter materials is discussed, as well as some representative work and research progress. The benefits, drawbacks, and research directions in terms of various materials are examined. This article emphasizes the pollution resistance of fibrous filter materials and the elasticity of fibrous adsorbents. Finally, the prospects in terms of the problems, challenges, and future development of special wettability fibrous materials used in oil/water separation are discussed.

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“…Among these methods, adsorption is viewed as one of the most effective strategies because they are affordable to use and readily available. Aerogels have been reported to be very efficient oil absorbents because of their lightweight and high porosity [3]. Recently, aerogels based on carbon nanotubes and graphene have been used as oil absorbents and have shown high oil absorption capacities [4].…”

Section: Introductionmentioning

confidence: 99%

Study on the efficient selective oil absorption and recovery of hydrophobic chitosan aerogels

Liang,

Wang,

et al. 2024

J. Phys.: Conf. Ser.

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Chitosan (CS) aerogels were prepared by an ice templating method and their surfaces were then coated with reduced graphene oxide to form modified biodegradable CS (MCS) aerogels. The MCS aerogels retained the porous CS structure after modification. Based on the characteristics of high porosity and hydrophobicity, the MCS aerogels exhibited a highly selective absorption ability of oils from water. The oil absorption capacity of MCS aerogels could achieve 92.63 g g−1 for chloroform. In addition, the compressive strength of the MCS aerogels increases after modification, so they are recyclable. Therefore, the MCS aerogels could be a kind of green, biodegradable, efficient, and cost-effective absorbent for spilled oils.

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A sustainable layered nanofiber/sheet aerogels enabling repeated life cycles for effective oil/water separation

Cited by 17 publications

References 61 publications

Electrospun Nanofibrous Membranes from Discarded Polyester Textiles for Oil Sorption

Electrospun Nanofibrous Membranes from Discarded Polyester Textiles for Oil Sorption

Bionic multifunctional fibrous materials for efficient oil/water separation

Study on the efficient selective oil absorption and recovery of hydrophobic chitosan aerogels

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