Eco-friendly synthesis of robust bioinspired cotton fabric with hybrid wettability for integrated water harvesting and water purification

Liu, Jingjing; Xiong, Jie; Huang, Qian; Lu, Tao; Chen, Weixing; Li, Meng

doi:10.1016/j.jclepro.2022.131524

Cited by 21 publications

(4 citation statements)

References 56 publications

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“…In situ chemical vapor deposition (CVD), 51 solution impregnation, 52 spraying, 53 thiol‐ene functionalization, 54 impregnation rolling drying, 55 in situ electrocoagulation, 56 in situ radical polymerization, 57 and other methods are used to prepare fabrics for oil/water separation. Fabric has been extensively researched due to its porous structure and strong woven structure.…”

Section: Categories Of Fibrous Materials With Different Substrates Fo...mentioning

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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Section: Categories Of Fibrous Materials With Different Substrates Fo...mentioning

confidence: 99%

Bionic multifunctional fibrous materials for efficient oil/water separation

Guo

Liu

2023

Droplet

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“…Large droplets can be quickly removed on the superhydrophobic surface, but it is difficult for small droplets to quickly form large droplets on the superhydrophobic surface because tiny droplets are easy to bounce off the surface of superhydrophobic materials, so these superhydrophobic surfaces cannot quickly capture the surrounding fog droplets . Combining the advantages of these two surfaces, researchers have designed a series of hybrid wettable surfaces such as hydrophilic–hydrophobic, hydrophilic–superhydrophobic, and superhydrophilic–superhydrophobic. − On the hybrid wetted surface, droplets can be quickly captured by superhydrophilic water level points on the surface and condense into large droplets, which then easily roll off the superhydrophobic region of the surface . However, the concave-convex structure in fog collection has a great influence on fog collection, which cannot be ignored by researchers Li et al cut 2D planes into 3D structures for water collection .…”

Section: Introductionmentioning

confidence: 99%

Origami-like 3D Fog Water Harvestor with Hybrid Wettability for Efficient Fog Harvesting

Peng

Guo

2023

ACS Appl. Mater. Interfaces

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Collecting water in fog has also become a breakthrough to solve the hidden danger of water shortage in some arid areas. The three-dimensional (3D) structure fog collection material can increase the surface area in direct contact with the fog flow and reduce the quick flow of fog, which can effectively improve the fog collection efficiency. Imitating the three-dimensional structure of corrugated paper, the 3D fog collecting material with hybrid wettability was prepared by chemical and physical means. We discuss the influence of different wettability combinations on the fog collection efficiency of 3D structures and study the influence of spraying times and illumination times on the surface wettability during the construction of wettability. We also study the influence of the concavity and tip as well as the bending angle on the fog collection in the 3D structure and obtain the most reasonable concavity and convex ratio and bending angle. The superhydrophilic and superhydrophobic 3D structure fog harvesting material prepared by us performs well in the fog harvesting process, and the fog harvesting efficiency reaches 1.442 g cm −2 h −1 . The fog collection efficiency is 418% of the original zinc sheet. At the same time, compared with the superhydrophilic and superhydrophobic hybrid twodimensional (2D) plane, the increase is 168%, and compared with the superhydrophobic 3D structure, the increase is 150%.

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“…Inspired by the Namib beetle, there have been many functional materials with hybrid wettability for water harvesting . Such materials containing hydrophobic and hydrophilic properties integrate and balance two competing processes, droplet capture and shedding, significantly improving water-harvesting efficiency. , Catching water droplets is inherently difficult on hydrophobic surfaces in arid regions or low-density fog compared to hydrophilic surfaces. On the contrary, hydrophilic surfaces do not shed droplets as quickly and retain more water on the collected mesh instead of evacuating the collected water to a reservoir .…”

Section: Introductionmentioning

confidence: 99%

Photoresponsive Electrospun Fiber Meshes with Switchable Wettability for Effective Fog Water Harvesting in Variable Humidity Conditions

Parisi,

Szewczyk,

Narayan

et al. 2023

ACS Appl. Mater. Interfaces

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The global water supply worsens yearly with climate change; therefore, the need for sustainable water resources is growing. One of them is fog water collectors with variable surface wettability, with multifunctional designs for utilization worldwide and to address regions with low humidity levels. Therefore, we created fiber meshes with a photoresponsive switchable surface. This study uses electrospun polyvinylidene fluoride (PVDF) meshes, whose wettability is controlled by adding TiO 2 . The fog water collection performance is studied at high and low humidity levels. With TiO 2 -PVDF, the electrospun mesh can be converted from hydrophobic to hydrophilic under UV irradiation and transformed back to a hydrophobic state with heat treatment. The switchable meshes were found to be more effective at water collection after UV irradiation at lower fog rates of 200 mL•h −1 . The ability to switch between hydrophobic and hydrophilic properties as needed is highly desired in fog collection applications using electrospun meshes, as it can improve overall efficiency after UV irradiation.

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Eco-friendly synthesis of robust bioinspired cotton fabric with hybrid wettability for integrated water harvesting and water purification

Cited by 21 publications

References 56 publications

Bionic multifunctional fibrous materials for efficient oil/water separation

Bionic multifunctional fibrous materials for efficient oil/water separation

Origami-like 3D Fog Water Harvestor with Hybrid Wettability for Efficient Fog Harvesting

Photoresponsive Electrospun Fiber Meshes with Switchable Wettability for Effective Fog Water Harvesting in Variable Humidity Conditions

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