Metal-organic frameworks for wastewater treatment: Recent developments, challenges, and future prospects

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Wastewater treatment is essential for environmental protection and public health.
• Toxic metal contaminants and organic pollutants pose significant risks to ecosystems and human well-being.
• Conventional treatment methods often require efficient adsorbent materials for pollutant removal.

Purpose of the Study:

• To review recent advancements in Metal-Organic Frameworks (MOFs) for wastewater treatment applications.
• To emphasize the structure-property relationships of MOF-based adsorbents, photocatalysts, and membranes.
• To identify current challenges and future opportunities in the field of MOFs for water purification.

Main Methods:

• Literature review of MOF applications in wastewater treatment since 2015.
• Analysis of novel MOF modification strategies, including defect engineering, carbonization, and membrane fabrication.
• Focus on structure-function relationships to understand MOF performance.

Main Results:

• MOFs exhibit unique properties making them suitable for adsorption, photocatalysis, and membrane-based water purification.
• Various modifications have been explored to enhance MOF adsorption capacity, stability, kinetics, and reusability.
• Laboratory-scale research has demonstrated potential in defect engineering, carbonization, and membrane fabrication.

Conclusions:

• MOFs offer a promising platform for developing advanced wastewater treatment technologies.
• Continued research into MOF modifications is crucial for improving their efficiency and applicability.
• Addressing challenges related to stability and scalability will unlock the full potential of MOFs in environmental remediation.