MOF@Polydopamine-incorporated membrane with high permeability and mechanical property for efficient fouling-resistant and oil/water separation

Zhao, Jian; Cao, Lin; Wang, Xiao; Huo, Haoling; Lin, Huaijun; Wang, Qiwei; Yang, Xu Sheng; Vogel, Florian; Li, Wei; Lin, Zhidan; Zhang, Peng

doi:10.1016/j.envres.2023.116685

Cited by 17 publications

(1 citation statement)

References 77 publications

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“…In the process of separating oil and water, the functional layer of ceramic membranes is prone to be contaminated, posing challenges in achieving consistent and stable performance. Inspired by the formation of mussels, dopamine can adhere to organic or inorganic surfaces with a simple deposition process [26]. Under conditions of mild alkalinity, dopamine can undergo oxidative self-polymerization to form polydopamine, which contains a large number of hydroxyl and amino groups on its surface.…”

Section: Introductionmentioning

confidence: 99%

Mussel-Inspired Construction of Silica-Decorated Ceramic Membranes for Oil–Water Separation

Zhou,

Chang,

et al. 2024

Ceramics

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In recent years, ceramic membranes have received widespread focus in the area of liquid separation because of their high permeability, strong hydrophilicity, and good chemical stability. However, in practical applications, the surface of ceramic membranes is prone to be contaminated, which degrades the permeation flux of ceramic membranes during the separation process. Inspired by mussels, we imitate the biomimetic mineralization process to prepare a ceramic membrane of nano–silica on the pre-modified zirconia surface by co-deposited polydopamine/polyethyleneimine. The modified ceramic membranes were utilized for the purpose of oil–water separation. Separation performance has been tested using a disc ceramic membrane dynamic filtration device. The outcomes revealed an enhanced permeability in the modified membrane, measuring as 159 L m−2 h−1 bar−1, surpassing the separation flux of the unmodified membrane, which was 104 L m−2 h−1 bar−1. The permeation performance of the modified membrane was increased to 1.5 times. Modified ceramic membranes are highly resistant to fouling. From the beginning to the end of separation process, the oil rejection rate of the modified ceramic membrane is always higher than 99%. After a 2 h oil–water separation test run, modified ceramic membrane permeate flux can be restored to 91% after cleaning. It has an enormous capacity for application in the area of oil–water separation.

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Section: Introductionmentioning

confidence: 99%

Mussel-Inspired Construction of Silica-Decorated Ceramic Membranes for Oil–Water Separation

Zhou,

Chang,

et al. 2024

Ceramics

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Covalent Organic Frameworks for Membrane Separation

Jin,

Li,

Yang

2024

Advanced Science

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Membranes with switchable wettability, solvent resistance, and toughness have emerged as promising materials for separation applications. However, challenges like limited mechanical strength, poor chemical stability, and structural defects during membrane fabrication hinder their widespread adoption. Covalent organic frameworks (COFs), crystalline materials constructed from organic molecules connected by covalent bonds, offer a promising solution due to their high porosity, stability, and customizable properties. The ordered structures and customizable functionality provide COFs with a lightweight framework, large surface area, and tunable pore sizes, which have attracted increasing attention for their applications in membrane separations. Recent research has extensively explored the preparation strategies of COF membranes and their applications in various separation processes. This review uniquely delves into the influence of various COF membrane fabrication techniques, including interfacial polymerization, layer‐by‐layer assembly, and in situ growth, on membrane thickness and performance. It comprehensively explores the design strategies and potential applications of these methods, with a particular focus on gas separation, oil/water separation, and organic solvent nanofiltration. Furthermore, future opportunities, challenges within this field, and potential directions for future development are proposed.

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NH2-CAU-1 modified polyphenylene sulfone (PPSU) membrane for separation of oil-in-water emulsions

Lu,

Yu,

Gao

et al. 2024

J Mater Sci

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MOF@Polydopamine-incorporated membrane with high permeability and mechanical property for efficient fouling-resistant and oil/water separation

Cited by 17 publications

References 77 publications

Mussel-Inspired Construction of Silica-Decorated Ceramic Membranes for Oil–Water Separation

Mussel-Inspired Construction of Silica-Decorated Ceramic Membranes for Oil–Water Separation

Covalent Organic Frameworks for Membrane Separation

NH2-CAU-1 modified polyphenylene sulfone (PPSU) membrane for separation of oil-in-water emulsions

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