Daylight-driven rechargeable, antibacterial, filtrating micro/nanofibrous composite membranes with bead-on-string structure for medical protection

Li, Ting‐Ting; Zhang, Heng; Gao, Bo; Shiu, Bing‐Chiuan; Ren, Haitao; Peng, Hao‐Kai; Lou, Ching‐Wen; Lin, Jia‐Horng

doi:10.1016/j.cej.2021.130007

Cited by 42 publications

(12 citation statements)

References 53 publications

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“…Currently, the COVID-19 pandemic and the prevalence of other infectious diseases have brought a heavy impact on humans, not only in terms of human health but also in affecting national stability and global economic development [1]. Nowadays, the number of infection and death cases is still rising, causing incessant attention all over the world [2,3].…”

Section: Introductionmentioning

confidence: 99%

Bicomponent PLA Nanofiber Nonwovens as Highly Efficient Filtration Media for Particulate Pollutants and Pathogens

et al. 2021

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Herein, a novel form of bicomponent nanofiber membrane containing stereo-complex polylactic acid (SC-PLA) was successfully produced by the side-by-side electrospinning of Poly (L-lactic acid) (PLLA) and Poly (D-lactic acid) (PDLA). We demonstrate that through these environmentally sustainable materials, highly efficient nanofiber assemblies for filtration can be constructed at very low basis weight. The physical and morphological structure, crystalline structure, hydrophobicity, porous structure, and filtration performance of the fibrous membranes were thoroughly characterized. It was shown that the fabricated polylactic acid (PLA) side-by-side fiber membrane had the advantages of excellent hydrophobicity, small average pore size, high porosity, high filtration efficiency, low pressure drop as well as superior air permeability. At the very low basis weight of 1.1 g/m2, the filtration efficiency and pressure drop of the prepared side-by-side membrane reached 96.2% and 30 Pa, respectively. Overall, this biomass-based, biodegradable filtration material has the potential to replace the fossil fuel-based polypropylene commercial meltblown materials for the design and development in filtration, separation, biomedical, personal protection and other fields.

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Section: Introductionmentioning

confidence: 99%

Bicomponent PLA Nanofiber Nonwovens as Highly Efficient Filtration Media for Particulate Pollutants and Pathogens

et al. 2021

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“…The characteristic peak at 1025 cm −1 corresponded with NH bending vibration and that at 1403 cm −1 corresponded with CN bending vibration peak (Abd Jelil, 2015; Sun et al, 2019; Zhao et al, 2011). The peaks at 3100–3400 and 1090 cm −1 corresponded with the OH stretching vibration and CO stretching vibration of PVA, respectively (Daelemans et al, 2018; Li, Zhang, et al, 2021), when gel and clay were combined at 3100–3400 cm −1 . The characteristic peak of the hydroxyl group at 1 and the characteristic peak of the amino group at 1025 cm −1 changed to different degrees, which may be caused by the hydrogen‐bond formation between the hydroxyl and amino groups and the clay.…”

Section: Resultsmentioning

confidence: 99%

Natural‐clay‐reinforced hydrogel adsorbent: Rapid adsorption of heavy‐metal ions and dyes from textile wastewater

Wang

Peng

et al. 2022

Water Environment Research

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In this study, two natural clay minerals were combined with hydrogels to study the influence of natural adsorbents on the adsorption performance of hydrogels. Here, we separately doped bentonite and vermiculite and discussed their mechanical properties and adsorption properties. It was found that the compressive performance of the hydrogel added with clay increased by 21.6% and the swelling performance decreased or increased to varying degrees. Regarding the adsorption performance of hydrogels, it can be seen from the adsorption Langmuir isotherm model that the adsorption capacity of clay–hydrogels is improved to varying degrees (6.6%–15.8%) compared with non‐clay–hydrogels, and clay–hydrogels have different degrees of improvement (6.6%–15.8%). The hydrogel has a removal efficiency of more than 95% for low concentrations of heavy‐metal ions and dyes. In addition, the clay–hydrogel has low cost and is easy to prepare, and can be recycled many times. Therefore, the material is of great significance for the treatment of pollutants. Practitioner Points The effect of natural clay on the adsorption performance of hydrogels was studied. Clay can enhance the compression and adsorption properties of hydrogels. The adsorption mechanism and adsorption capacity of clay hydrogels were evaluated.

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“…We may also see a difference in the antibacterial effects between Gram-negative and Gram-positive bacteria. 48…”

Section: Resultsmentioning

confidence: 99%

“…The protocols were based on the previous studies. 33,34,46–49 Gram-positive Staphylococcus aureus ( S. aureus ) and Gram-negative Escherichia coli ( E. coli ) were grown for 24 hours in LB medium under aerobic conditions at 37 °C. Bacterial suspensions produced by diluting overnight cultures in LB medium to a cell density of 10 6 CFU mL −1 were seeded on LB agar with a sterile swab for the antimicrobial patch assay.…”

Section: Methodsmentioning

confidence: 99%

A hemostatic keratin/alginate hydrogel scaffold with methylene blue mediated antimicrobial photodynamic therapy

Feng

Liu

et al. 2022

J. Mater. Chem. B

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Daylight-driven rechargeable, antibacterial, filtrating micro/nanofibrous composite membranes with bead-on-string structure for medical protection

Cited by 42 publications

References 53 publications

Bicomponent PLA Nanofiber Nonwovens as Highly Efficient Filtration Media for Particulate Pollutants and Pathogens

Bicomponent PLA Nanofiber Nonwovens as Highly Efficient Filtration Media for Particulate Pollutants and Pathogens

Natural‐clay‐reinforced hydrogel adsorbent: Rapid adsorption of heavy‐metal ions and dyes from textile wastewater

A hemostatic keratin/alginate hydrogel scaffold with methylene blue mediated antimicrobial photodynamic therapy

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