Absolute film separation of dyes/salts and emulsions with a superhigh water permeance through graded nanofluidic channels

Zhang, Tianmeng; Guo, Ruyong; Ying, Guobing; Lu, Zhiyong; Peng, Feng; Shen, Mingxia; Zhang, Jianfeng

doi:10.1039/d2mh00046f

Cited by 14 publications

(4 citation statements)

References 44 publications

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“…Therefore, the ultra‐low‐pressure separation membrane could be achieved by the induced capillary force F c and the combined forces F t and F g . [ 51 ]…”

Section: Resultsmentioning

confidence: 99%

“…The hydration diameters of Na + (0.72 nm), Cl − (0.66 nm), and SO 4 2− (0.76 nm) were presumably smaller than the membrane pore diameters, therefore are readily transported between the membranes. [ 51 ] However, the M‐TA/AP2 membrane had a consistent CR rejection rate of more than 95.0%. At the same time, the dye/salt mixture remained had high water permeability while passing through the membrane.…”

Section: Resultsmentioning

confidence: 99%

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A Bioinspired Capillary Force‐Induced Driving Strategy for Constructing Ultra‐Low‐Pressure Separation Membranes

Yang

Lin

Tang

et al. 2023

Adv Funct Materials

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The development of low‐pressure or pressureless self‐driven membranes is important for saving energy and overcoming the critical trade‐off effect in membrane separation processes. However, conventional self‐driven membranes rely on gravity, which is effective in the separation of large‐sized materials but is still ineffective in the fine separation of small molecules. Herein, inspired by the capillary effect that exists in nature, a capillary force‐induced membrane‐driving strategy for fine separation at ultra‐low pressures is demonstrated. Hydrophilic nanoparticles are prepared by a cross‐linking reaction between tannic acid and 3‐aminopropyltriethoxysilane and then introduce them into membrane pores to simulate sand accumulation with an aim to generate the capillary force. The membrane is then used in ultra‐low pressure membrane separation. Interestingly, it is found that the membrane has excellent performance in the separation of dye/salt mixtures (dye rejection > 99%, salt rejection < 10%) and a high permeate flux (160 L m−2 h−1) under near “zero pressure” conditions. Moreover, the structural stability of the membrane is verified. Introducing capillary forces into membranes as an autonomous driving force can be a promising universal approach that can be added up to the toolbox for the efficient preparation of separation membranes.

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“…Therefore, the ultra‐low‐pressure separation membrane could be achieved by the induced capillary force F c and the combined forces F t and F g . [ 51 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Bioinspired Capillary Force‐Induced Driving Strategy for Constructing Ultra‐Low‐Pressure Separation Membranes

Yang

Lin

Tang

et al. 2023

Adv Funct Materials

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“…In contrast to polyaniline, polypyrrole composites have been investigated as adsorbents less often ( Table 3 ). Polypyrrole has been combined and, as a rule, deposited in situ during the polymerization of pyrrole onto inorganic substrates, such as carbon nitride [ 121 ], MXene [ 122 ], nanosilica [ 23 ], and stainless steel mesh [ 123 ].…”

Section: Polypyrrole Adsorbentsmentioning

confidence: 99%

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

Stejskal

2022

Polymers

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Water pollution by organic dyes, and its remediation, is an important environmental issue associated with ever-increasing scientific interest. Conducting polymers have recently come to the forefront as advanced agents for removing dye. The present review reports on the progress represented by the literature published in 2020–2022 on the application of conducting polymers and their composites in the removal of dyes from aqueous media. Two composites, incorporating the most important polymers, polyaniline, and polypyrrole, have been used as efficient dye adsorbents or photocatalysts of dye decomposition. The recent application trends are outlined, and future uses also exploiting the electrical and electrochemical properties of conducting polymers are offered.

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“…[1][2][3][4][5][6][7] PDA coatings, the most popularly used PDA-based materials, possess exhilarating properties (such as adhesion, controllable modification and UV shielding) and can play a decisive role in the fields of energy, biomedicine, catalysis and UV protection. [8][9][10][11][12][13] UV shielding is one of the topmost properties of PDA coatings, which are utilized in various fields. 11,[14][15][16] However, unsatisfactory UV absorption capability limits the further application of PDA coatings.…”

Section: Introductionmentioning

confidence: 99%

UV absorption enhanced polydopamine coating

Yang,

Liu,

Zhao

et al. 2024

Mater. Horiz.

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Absolute film separation of dyes/salts and emulsions with a superhigh water permeance through graded nanofluidic channels

Abstract: The development of multifunctional films with a high permeability has been highly concerned for effective separation of complex aqueous contaminates, especially in face of zero or near-zero release regulations. Inspired...

Cited by 14 publications

References 44 publications

A Bioinspired Capillary Force‐Induced Driving Strategy for Constructing Ultra‐Low‐Pressure Separation Membranes

A Bioinspired Capillary Force‐Induced Driving Strategy for Constructing Ultra‐Low‐Pressure Separation Membranes

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

UV absorption enhanced polydopamine coating

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