Lightweight, elastic and superhydrophobic multifunctional nanofibrous aerogel for self-cleaning, oil/water separation and pressure sensing

Ma, Wenjing; Jiang, Zhicheng; Lü, Tao; Xiong, Ranhua; Huang, Chaobo

doi:10.1016/j.cej.2021.132989

Cited by 130 publications

(57 citation statements)

References 54 publications

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“…The advantages of structural stability of PAC- g -PEI aerogel can be demonstrated by its ultralight and elastic characteristic . PAC- g -PAC, PAC/PEI, and PAC- g -PEI aerogels have increased densities and decreased porosities compared to the pristine PAC aerogels (Figure b).…”

Section: Resultsmentioning

confidence: 99%

“…Aerogel, an ultralightweight porous three-dimensional network-structured material with low density, extremely high porosity, large surface area, and tunable surface chemistry, , has promising applications for a wide range of areas, including thermal insulation, energy storage devices, , catalyst supports, biomedical scaffold, and environmental remediation. ,− Researchers have made many attempts to synthesize various aerogel materials such as silica, graphene oxide, MXene, and synthetic polymers . However, these materials are nonrenewable.…”

Section: Introductionmentioning

confidence: 99%

“…Since most oils are less dense than water, they float on water due to buoyancy. Numerous superhydrophobic/oleophilic aerogels have been developed to adsorb the oils floating on water. , However, these aerogels are easily contaminated with oil, which may lead to clogging of pores, especially by viscous oils. Moreover, the adsorbed oil is difficult to remove and requires organic solvents or surfactant solutions for post-treatment, which might lead to secondary pollution .…”

Section: Introductionmentioning

confidence: 99%

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Mechanically Tough and Regenerable Antibacterial Nanofibrillated Cellulose-Based Aerogels for Oil/Water Separation

Fan

Wang

et al. 2022

Langmuir

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Nanofibrillated cellulose (NFC)-based aerogels have been widely used for various applications. However, the disadvantages of poor structural stability, low mechanical toughness, and easy contamination by bacteria hinder their large-scale application. In this work, 3-(3′-acrylicacidpropylester)-5,5-dimethyl hydantoin (APDMH) was grafted on oxidized NFC (ONC) to prepare antibacterial poly(APDMH)-g-ONC (PAC). PAC and poly-(ethyleneimine) (PEI) were chemically cross-linked using 3glycidoxypropyltrimethox (GPTMS), aiming at constructing a PAC-g-PEI aerogel with multiple network structures. The mechanical behaviors of composite aerogel and oil/water separation performances under different conditions were investigated. PAC-g-PEI aerogel exhibits outstanding fatigue resistance (>50 cycles of compression) and superior elasticity (96.76% height recovery after five compression-release cycles at 50% strain). The obtained superhydrophilic and underwater-oleophobic properties endow the aerogel with excellent oil/water separation performances, achieving a satisfactory separation efficiency of over 99% and flux of over 9500 L•m −2 •h −1 . Furthermore, the chlorinated aerogel of PAC-g-PEI-Cl shows highly efficient and rechargeable antibacterial properties, can inactivate 6.72-log Escherichia coli and 6.60-log Staphylococcus aureus within 10 min, and can still kill all inoculated bacteria after 50 cycles. In addition, PAC-g-PEI-Cl aerogel can inhibit biofilm formation, making it a promising candidate for highly efficient oil/water separation applications in diverse harsh conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanically Tough and Regenerable Antibacterial Nanofibrillated Cellulose-Based Aerogels for Oil/Water Separation

Fan

Wang

et al. 2022

Langmuir

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“…[19] Especially for the selection of the barrier layers, the nanofibrous membranes are alternative. By controlling porosity and surficial chemistry to obtain hydrophilicity or hydrophobicity or oleophobic property, various nanofibrous membranes have been applied for oil/water separation, air filtration etc.. [18,[20][21][22][23][24][25][26][27][28][29][30] Besides, the high resistance against mass transfer of nanofibrous membrane-coated fabrics have been proposed. [31] From this point of view, it is an alternative to use the nanofibrous membranes can be used as barrier layer to resist against the penetration of melting PCMs by adjusting their interfacial adhesion.…”

Section: Introductionmentioning

confidence: 99%

Nanofibrous Membranes in Multilayer Fabrics to Avoid PCM Leakages

et al. 2022

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Incorporating phase change materials (PCMs) into textiles is one facial method to realize personal thermal management (PTM). Despite the significant progress of PCM‐incorporated textiles, the incorporation of PCMs into textiles remains an outstanding challenge. In this work, we described a sandwich‐like multi‐layer PCM fabric, which consisted of nanofibrous membranes as barrier layers and PCM‐loaded viscose fabric as a PCM‐loaded layer. Three common organic PCMs including polyethylene glycol (PEG), paraffin wax (PW) and myristic acid (MA), and the polyurethane (PU) nanofibrous membranes was used. As a result, we achieved that weak interfacial adhesion between melting PCMs and PU nanofibrous membranes accounted for leakage phenomena. Only the sample (UPWV) with PU nanofibrous membranes as barrier layers and paraffin wax (PW) as PCMs had no leakage. Little confinement of PW crystallization in the UPWV was found. Besides, thermal energy storage, phase transition, and thermal buffering effect of UPWV supported various applications.

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“…Aerogels are widely used in various applications such as energy storage devices, [1,2] sensors, [3] pollutant treatment, [4] sound absorbers, [5,6] and thermal insulating materials [7,8] due to their unique properties including super high surface area, ultra-low DOI: 10.1002/mame.202100971 density, and thermal conductivity. With the nature of 3D and highly porous structure, the skeleton of aerogels was constructed by nanoscale building blocks, [9,10] including nanoparticles, [11,12] nanotubes, [13,14] and nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Self‐Reinforced Polymer Nanofiber Aerogels for Multifunctional Applications

You

Zhao

Mei

et al. 2022

Macro Materials & Eng

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Nanofibrous aerogels with ultra‐high porosity and surface area exhibit great potential for widespread applicability and therefore attract extensive attentions. Herein, a self‐reinforcing strategy to design nanofibrous aerogels is proposed using the thermoplastic polymer nanofibers as building blocks and a simple thermal welding as the crosslinking method. The macroscopic freestanding thermoplastic poly(vinyl alcohol‐co‐ethylene) nanofibers aerogel is mass manufactured via industrial sea‐island spinning and ice template method. After further welding the nanofibers using a facile and controlled heat treatment, the mechanically robust aerogels are favorably fabricated with higher restorability under compression, folding, and torsion and better stability in solvent relative to the unwelded aerogels. It is interesting that the wettability of the nanofibrous aerogels changes from hydrophilic to hydrophobic after thermal welding and excellent stability in water. The resulting nanofibrous aerogels exhibit effective absorption performance for oils and organic solvents, excellent thermal insulation, and efficient acoustic absorption. The results reveal that the development of self‐reinforced polymer nanofiber aerogels may provide the options to the design of multifunctional aerogels due to the industrial fabrication of thermoplastic polymer nanofibers and chemical‐free post‐treatment.

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Lightweight, elastic and superhydrophobic multifunctional nanofibrous aerogel for self-cleaning, oil/water separation and pressure sensing

Cited by 130 publications

References 54 publications

Mechanically Tough and Regenerable Antibacterial Nanofibrillated Cellulose-Based Aerogels for Oil/Water Separation

Mechanically Tough and Regenerable Antibacterial Nanofibrillated Cellulose-Based Aerogels for Oil/Water Separation

Nanofibrous Membranes in Multilayer Fabrics to Avoid PCM Leakages

Self‐Reinforced Polymer Nanofiber Aerogels for Multifunctional Applications

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