Durable and Recyclable Superhydrophilic–Superoleophobic Materials for Efficient Oil/Water Separation and Water-Soluble Dyes Removal

Qu, Mengnan; Ma, Lili; Zhou, Yichen; Zhao, Yu; Wang, Jiaxin; Zhang, Yi; Zhu, Xuedan; Liu, Xiangrong; He, Jinmei

doi:10.1021/acsanm.8b01249

Cited by 51 publications

(21 citation statements)

References 68 publications

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“…The pollutants in aquatic ecosystems have caused serious environmental problems and threatened public health. Developing sustainable and economical technologies for treating wastewater process faces true challenges [1,2,3]. The pollution caused by organic dyes has been a great menace to the water ecosystem and human health [4,5].…”

Section: Introductionmentioning

confidence: 99%

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Chen

Zhao

et al. 2019

Molecules

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The magnetic adsorbent, Fe3O4@[Ni(HL)2]2H2[P2Mo5O23]·2H2O (Fe3O4@1), is synthesized by employing the nanoparticles Fe3O4 and polyoxometalate hybrid 1. Zero-field-cooled (ZFC) and field-cooled (FC) curves show that the blocking temperature of Fe3O4@1 was at 120 K. Studies of Fe3O4@1 removing cationic and anionic dyes from water have been explored. The characterization of Fe3O4@1, effects of critical factors such as dosage, the concentration of methylene blue (MB), pH, adsorption kinetics, isotherm, the removal selectivity of substrate and the reusability of Fe3O4@1 were assessed. The magnetic adsorbent displayed an outstanding removal activity for the cationic dye at a broad range of pH. The adsorption kinetics and isotherm models revealed that the adsorption process of Fe3O4@1 was mainly governed via chemisorption. The maximum capacity of Fe3O4@1 adsorbing substance was 41.91 mg g−1. Furthermore, Fe3O4@1 showed its high stability by remaining for seven runs of the adsorption-desorption process with an effective MB removal rate, and could also be developed as a valuable adsorbent for dyes elimination from aqueous system.

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Section: Introductionmentioning

confidence: 99%

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Chen

Zhao

et al. 2019

Molecules

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“…among them, S represents the effective area through which water passes, V represents the content of water passed through, and t represents the time for water to pass completely. At the same time, the following formula represents the separation efficiency of oilwater separation 2 36 :…”

Section: Oil-water Separation Experiments and Oilwater Separation Efficiency Of Treated Copper Foammentioning

confidence: 99%

A facile preparation of robust superhydrophilic and underwater superoleophobic copper foam for high efficiency and repeatable oil–water separation

Wang

Pang

et al. 2021

Surface & Interface Analysis

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Design of robust separation materials with superwettability for efficient oil–water separation is of great significance because of the serious problem of oil leakage. Herein, we have fabricated a superwetting material based on copper foam via chemical oxidation and hydrothermal method for oil–water separation. These modified copper foam with rough structure exhibit excellent superhydrophilicity and underwater superoleophobicity. Thus, it shows high oil–water separation efficiency (99%), excellent circulation and high‐flux (24,129 Lm−2 h−1). Meanwhile, the modified copper foam exhibits favorable durability and stability under extreme environment conditions, such as immersion tests in salt, different pH conditions, high temperature and mechanical abrasion tests. Therefore, the modified copper foam has the advantages of high separation efficiency and remarkable stability, and is promising material, which can be used for the treatment of industrial oily wastewater.

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“…The surface of a material can be engineered to have a combination of wetting properties so as to be used for separation of oil/water mixtures. This combination could be superhydrophobic/superoleophilic (Han et al, 2017 ; Sun et al, 2018 ) or superoleophobic/superhydrophilic (Li et al, 2018a ; Qu et al, 2018 ), depending upon the type of material and nature of application environment. Generally, surfaces with superhydrophobic properties are used to repel the water in a mixture and attract the oil, whereas the opposite arrangement is used to repel oil from oil/water mixtures, which utilize superoleophilic surfaces.…”

Section: Separation Of Oil/water Mixturesmentioning

confidence: 99%

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

et al. 2020

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Oil/water mixtures are a potentially major source of environmental pollution if efficient separation technology is not employed during processing. A large volume of oil/water mixtures is produced via many manufacturing operations in food, petrochemical, mining, and metal industries and can be exposed to water sources on a regular basis. To date, several techniques are used in practice to deal with industrial oil/water mixtures and oil spills such as in situ burning of oil, bioremediation, and solidifiers, which change the physical shape of oil as a result of chemical interaction. Physical separation of oil/water mixtures is in industrial practice; however, the existing technologies to do so often require either dissipation of large amounts of energy (such as in cyclones and hydrocyclones) or large residence times or inventories of fluids (such as in decanters). Recently, materials with selective wettability have gained attention for application in separation of oil/water mixtures and surfactant stabilized emulsions. For example, a superhydrophobic material is selectively wettable toward oil while having a poor affinity for the aqueous phase; therefore, a superhydrophobic porous material can easily adsorb the oil while completely rejecting the water from an oil/water mixture, thus physically separating the two components. The ease of separation, low cost, and low-energy requirements are some of the other advantages offered by these materials over existing practices of oil/water separation. The present review aims to focus on the surface engineering aspects to achieve selectively wettability in materials and its their relationship with the separation of oil/water mixtures with particular focus on emulsions, on factors contributing to their stability, and on how wettability can be helpful in their separation. Finally, the challenges in application of superwettable materials will be highlighted, and potential solutions to improve the application of these materials will be put forward.

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Durable and Recyclable Superhydrophilic–Superoleophobic Materials for Efficient Oil/Water Separation and Water-Soluble Dyes Removal

Cited by 51 publications

References 68 publications

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

A facile preparation of robust superhydrophilic and underwater superoleophobic copper foam for high efficiency and repeatable oil–water separation

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

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