Dual super-amphiphilic modified cellulose acetate nanofiber membranes with highly efficient oil/water separation and excellent antifouling properties

Wang, Weiwen; Lin, Jixin; Cheng, Jiaqi; Cui, Zhixiang; Si, Junhui; Wang, Qianting; Peng, Xiangfang; Turng, Lih‐Sheng

doi:10.1016/j.jhazmat.2019.121582

Cited by 99 publications

(45 citation statements)

References 42 publications

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“…Cellulose acetate (CA) has been used to prepare highly porous, surface-rough films with interesting electronic applications (Meng et al, 2020;Wang et al, 2020). Two studies introduced CA as the main component of TENGs.…”

Section: Cellulose Acetatementioning

confidence: 99%

Polysaccharide-based triboelectric nanogenerators: A review

Torres

De-la-Torre

2021

Carbohydrate Polymers

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Triboelectric nanogenerators (TENGs) are versatile electronic devices used for environmental energy harvesting and self-powered electronics with a wide range of potential applications. The rapid development of TENGs has caused great concern regarding the environmental impacts of conventional electronic devices. Under this context, researching alternatives to synthetic and toxic materials in electronics are of major significance. In this review, we focused on TENGs based on natural polysaccharide materials. Firstly, a general overview of the working mechanisms and materials for high-performance TENGs were summarized and discussed. Then, the recent progress of polysaccharide-based TENGs along with their potential applications reported in the literature from 2015 to 2020 was reviewed. Here, we aimed to present polysaccharide polymers as a promising and viable alternative to the development of green TENGs and tackle the challenges of recycling e-wastes.

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Section: Cellulose Acetatementioning

confidence: 99%

Polysaccharide-based triboelectric nanogenerators: A review

Torres

De-la-Torre

2021

Carbohydrate Polymers

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“…[67][68][69][70] Cellulose derivatives can be produced by the esterification, etherification, and oxidation of cellulose materials, and various chemical groups are thereby attached to the surfaces of the cellulose molecular chains (Figure 2f). [44,[71][72][73][74] The diversity of wood-derived materials enables the production of various macro-, micro-, and nanoscale structures with different properties, which provide numerous types of building blocks for various oil/water separation materials.…”

Section: Strategies For Fabricating Separation Materialsmentioning

confidence: 99%

“…Because they contain numerous hydroxyl groups and comprise chemical components with relatively high carbon contents, these wood-derived materials can be further processed into novel bulk materials of specific wettability and roughness, and with pore structures that are useful for oil/ water separation. Thanks to the efforts of numerous research groups, a series of wood-derived materials-such as delignified wood blocks, [37,38] wood pulps, [39] filter papers, [40][41][42] films/membranes, [43,44] aerogels/foams/sponges, [45][46][47] and carbon-based bulk materials [48,49] -have been produced and used in oil/water separation systems. The separation speed, separation efficiency, antifouling performance, and reusability of such systems are critical for practical and sustainable applications.…”

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confidence: 99%

Wood‐Derived Systems for Sustainable Oil/Water Separation

Fang

Jing

et al. 2021

Advanced Sustainable Systems

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As defined by the United Nations, "clean water and sanitation" is one of the 17 sustainable development goals for the improvement of sustainable living. Pollution prevention and the acquisition of clean water are urgent demands that require the joint cooperation of all nations. From a practical standpoint, it is important to develop sustainable systems for oil/water separation because mixtures of oil and water often threaten the environment and endanger biological systems. For example, major oil spills can destroy entire ecosystems and the economic activities that depend on them. [1] Separating oil and water is currently a global challenge. [2][3][4][5][6][7][8][9][10][11][12][13][14] Thus, more effort is required for the construction of effective systems based on functional materials, devices, and techniques that facilitate the sustainable separation of oil/ water mixtures (O/W-Ms) to obtain clean water and to enable the recycling of expensive oil. Water is often "polluted" by oil and forms oil/water layered mixtures (O/W-LMs), oil-in-water emulsions (O/W-Es), and water-in-oil emulsions (W/O-Es). [2] When trace amounts of water is mixed in oil, it is also difficult to remove the water. Different types of O/W-Ms have been separated by filtration and absorption using systems containing various materials with specific structures and wettabilities. These materials are usually porous to facilitate liquid absorption, storage, and transportation.For filtration separation systems, hydrophilic materials that are oleophobic in subaquatic environments are used as filters to retain oil and allow water to pass through, [15][16][17] whereas oleophilic materials that are hydrophobic under oil are used as filters to repel water and enable oil to pass through. [18][19][20][21] For absorption separation systems, various oleophilic and hydrophobic materials are exploited to absorb oil from water. [22][23][24][25][26][27][28] Speed and efficiency are the most critical factors for separation systems, and are widely determined by the method of separation, the structures and performances of the separation materials, and the characteristics, ratios, and amounts of the O/W-Ms. It is also important to achieve continuous and largescale oil/water separation. [28][29][30] Although systems comprising novel materials and devices have been employed for the rapid and efficient separation of oil and water, the exploitation of separation materials still faces many practical challenges. These Separating oil and water remains a serious challenge because various oil/ water mixtures are generated in large quantities by industrial processes, unexpected accidents, and daily life. Various systems containing materials with specific structures and wettabilities have been investigated as possible solutions to this issue. As a sustainable biological material, wood and its derivatives have many advantageous properties for practical applications. The present review mainly focuses on recent progress in using wood-derived systems for sustainable oil/water separ...

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“…On the other hand, in the case of superhydrophobic membranes, these underwater oleophilic membranes are inefficient when the oil is heavier than water. 22 Thus, there is an ongoing effort to develop environment-friendly amphiphilic membranes for efficient oil/water separation due to their differential wettability, high flux, and excellent selectivity. 17,[22][23][24][25][26][27] The amphiphilic membrane can simultaneously act as superamphiphilic in air, oleophobic underwater, and hydrophobic under oil which makes them suitable for a broader range of water-oil mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…This lowers the separation efficiency of oil removing membranes and would require additional higher pressure, resulting in high‐energy consumption. On the other hand, in the case of superhydrophobic membranes, these underwater oleophilic membranes are inefficient when the oil is heavier than water 22 …”

Section: Introductionmentioning

confidence: 99%

Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

Raghavan

Khandelwal

2020

J of Applied Polymer Sci

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A high-efficiency separation of oil and water can be achieved by using specially designed amphiphilic porous membrane. However, the preparation of such membranes often involves complex multistep chemical processes. Herein, we report an amphiphilic composite membrane (polystyrene [PS]/bacterial cellulose [BC] membrane) consisting of hydrophobic recycled PS and hydrophilic BC, fabricated by a facile in situ fermentation process. Not only these membranes exhibit a combination of contrasting wettability but also comprise of a hierarchical network of microfibers and nanofibers, which makes them ideal for oil-water separation. The structural and morphological properties of asproduced BC, recycled PS membrane, and PS/BC composite membrane were studied by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. The ability of the membranes to separate oil and water was tested by using an emulsion of hexane-in-water as the feed and the collected filtrates were characterized by optical microscopy and UV-Vis spectroscopy. PS membranes were unable to separate oil and water, while the PS/BC membrane efficiently separated water from the emulsion. PS/BC composite membranes showed a high water recovery of more than 90%, against only 57% recovery shown by BC. Mechanisms of oil-water separation for each membrane are discussed. The reusability of the PS/BC composite membrane was also demonstrated.

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Dual super-amphiphilic modified cellulose acetate nanofiber membranes with highly efficient oil/water separation and excellent antifouling properties

Cited by 99 publications

References 42 publications

Polysaccharide-based triboelectric nanogenerators: A review

Polysaccharide-based triboelectric nanogenerators: A review

Wood‐Derived Systems for Sustainable Oil/Water Separation

Hierarchical amphiphilic high‐efficiency oil–water separation membranes from fermentation derived cellulose and recycled polystyrene

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