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Wettability's influence on MOF membranes for oil/water separation: A review.

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Title: Wettability's influence on MOF membranes for oil/water separation: A review.
Authors: Nouri, Erfan1 (AUTHOR), Kardan, Alireza1 (AUTHOR), Raouf, Fereshteh1 (AUTHOR) f.raouf@guilan.ac.ir, Alizadeh, Hossein1 (AUTHOR)
Source: Canadian Journal of Chemical Engineering. May2026, Vol. 104 Issue 5, p2597-2620. 24p.
Subjects: Wetting, Oil separators, Biological membranes, Water purification, Hydrophobic compounds, Membrane filter fouling
Abstract: The efficient separation of oil and water is crucial for environmental protection and resource management. Due to tunable structures and functionalities, metal–organic frameworks (MOFs) have emerged as promising membrane‐based oil/water separation materials. This review explores the significant influence of wettability on the performance of MOF membranes in this application. We examine three primary categories: hydrophilic/oleophobic, hydrophobic/lipophilic, and switchable wettability MOF membranes, detailing their synthesis, separation mechanisms, and performance characteristics. The analysis reveals that while all three types can achieve high separation efficiencies, hydrophilic/oleophobic membranes often exhibit superior flux. A key challenge is membrane fouling, and strategies for regeneration and self‐cleaning, particularly those leveraging switchable wettability, are discussed. This review highlights wettability's importance in dictating MOF membranes' performance for oil/water separation. It identifies key areas for future research to enhance membrane stability, scalability, and effectiveness in addressing real‐world water purification challenges. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The efficient separation of oil and water is crucial for environmental protection and resource management. Due to tunable structures and functionalities, metal–organic frameworks (MOFs) have emerged as promising membrane‐based oil/water separation materials. This review explores the significant influence of wettability on the performance of MOF membranes in this application. We examine three primary categories: hydrophilic/oleophobic, hydrophobic/lipophilic, and switchable wettability MOF membranes, detailing their synthesis, separation mechanisms, and performance characteristics. The analysis reveals that while all three types can achieve high separation efficiencies, hydrophilic/oleophobic membranes often exhibit superior flux. A key challenge is membrane fouling, and strategies for regeneration and self‐cleaning, particularly those leveraging switchable wettability, are discussed. This review highlights wettability's importance in dictating MOF membranes' performance for oil/water separation. It identifies key areas for future research to enhance membrane stability, scalability, and effectiveness in addressing real‐world water purification challenges. [ABSTRACT FROM AUTHOR]
ISSN:00084034
DOI:10.1002/cjce.70135