Biocompatible, hydrophobic and resilience graphene/chitosan composite aerogel for efficient oil−water separation

Hu, Jun; Zhu, Jingjing; Ge, Shengzhuo; Jiang, Chongwen; Guo, Tianyu; Peng, Tangping; Huang, Tao; Xie, Le

doi:10.1016/j.surfcoat.2020.125361

Cited by 88 publications

(31 citation statements)

References 64 publications

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“…Another technique that was used, mainly with cellulose nanofibers, is directional freeze-drying. This drying step is adequate to form anisotropic aerogels with unique properties—primarily mechanical—and even for insulation [ 7 ]. This particular structure can also be obtained via an electrospinning process and a subsequent crosslinking process.…”

Section: Chitosan-based Aerogelsmentioning

confidence: 99%

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Porous Aerogels and Adsorption of Pollutants from Water and Air: A Review

2021

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Aerogels are open, three-dimensional, porous materials characterized by outstanding properties, such as low density, high porosity, and high surface area. They have been used in various fields as adsorbents, catalysts, materials for thermal insulation, or matrices for drug delivery. Aerogels have been successfully used for environmental applications to eliminate toxic and harmful substances—such as metal ions or organic dyes—contained in wastewater, and pollutants—including aromatic or oxygenated volatile organic compounds (VOCs)—contained in the air. This updated review on the use of different aerogels—for instance, graphene oxide-, cellulose-, chitosan-, and silica-based aerogels—provides information on their various applications in removing pollutants, the results obtained, and potential future developments.

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Section: Chitosan-based Aerogelsmentioning

confidence: 99%

“…In addition to aerogels based on a single material, the production of composites consisting of different materials is of interest in presenting the chance to tailor and improve the properties of aerogels, such as water-affinity, mechanical resistance, and their performance for specific applications [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Porous Aerogels and Adsorption of Pollutants from Water and Air: A Review

2021

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“…Chitosan (CS) is one of the most promising polysaccharide biopolymers with high practical potential due to its non-toxic nature, biocompatibility, antimicrobial activity, film-forming properties, relative chemical, and mechanical stability [ 1 , 2 ]. These properties make CS coatings useful for biomedical, packaging, pharmaceutical, and water-treatment applications [ 2 , 3 , 4 , 5 , 6 ]. Nevertheless, their usage in the biomedical sector remains dominant.…”

Section: Introductionmentioning

confidence: 99%

Anodic Electrodeposition of Chitosan–AgNP Composites Using In Situ Coordination with Copper Ions

et al. 2021

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Chitosan is an attractive material for biomedical applications. A novel approach for the anodic electrodeposition of chitosan–AgNP composites using in situ coordination with copper ions is proposed in this work. The surface and cross-section morphology of the obtained coating with varying concentrations of AgNPs were evaluated by SEM, and surface functional groups were analyzed with FT-IR spectroscopy. The mechanism of the formation of the coating based on the chelation of Cu(II) ions with chitosan was discussed. The antibacterial activity of the coatings towards Staphylococcus epidermidis ATCC 35984/RP62A bacteria was analyzed using the live–dead approach. The presented results indicate that the obtained chitosan–AgNP-based films possess some limited anti-biofilm-forming properties and exhibit moderate antibacterial efficiency at high AgNP loads.

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“…Aerogel is a kind of lightweight material with high porosity, and considered as one of the most ideal absorbents [5][6][7]. Various aerogels made of gelatin [8], graphene [9], silica [10], cellulose nano bers [11][12][13], chitosan [14,15], have already been studied for oil absorption. Among them, the bacterial cellulose (BC) aerogels have attracted intensively attention.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Bacterial Cellulose Aerogel for Oil and Water Separation

Yan¹,

Zhu²,

Li³

et al. 2021

Preprint

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Bacterial cellulose (BC) aerogel has great potential in treating oil spill and organic pollutant. However, its inherent hydrophilicity and poor rigidity limit its practical application and recyclability. In this study, elastically compressible and high oil-absorbing aerogels were developed by freeze-drying aqueous suspensions with appropriate BC concentrations, followed by a chemical vapor deposition of methyltrimethoxysilane with ammonia as catalyst. The modified aerogel shows high water contact angle of 142° and enhanced compression resistance. The effect of BC concentration on the adsorption capacity and recyclability of aerogel has been investigated. The results show that the aerogel prepared with 0.3 wt% BC exhibits simultaneously high absorption capacity (121.8-284.1 g/g) and excellent recyclability. Futhermore, the aerogel could also separate chloroform-water mixture by gravity-driven filtration, giving the separation efficiency of 96.7 %. Therefore, this economical green aerogel provides a feasible strategy for solving oil leakage in industry.

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Biocompatible, hydrophobic and resilience graphene/chitosan composite aerogel for efficient oil−water separation

Cited by 88 publications

References 64 publications

Porous Aerogels and Adsorption of Pollutants from Water and Air: A Review

Porous Aerogels and Adsorption of Pollutants from Water and Air: A Review

Anodic Electrodeposition of Chitosan–AgNP Composites Using In Situ Coordination with Copper Ions

Recyclable Bacterial Cellulose Aerogel for Oil and Water Separation

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