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Defect-engineered UiO-66-NH2 modified thin film nanocomposite membrane with enhanced nanofiltration performance
Linhan Ni1, Zhipeng Liao1, Ke Chen1
1Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China. lijsh@njust.edu.cn.
Chemical Communications (Cambridge, England)
|July 17, 2020
Summary
Defect-engineered UiO-66-NH2 nanoparticles were added to polyamide thin film nanocomposite membranes. This improved both water permeance and sodium sulfate selectivity for better water purification.
Area of Science:
- Materials Science
- Chemical Engineering
- Membrane Technology
Background:
- Thin film nanocomposite (TFN) membranes are crucial for water treatment.
- Improving both permeance and selectivity in TFN membranes remains a challenge.
- UiO-66-NH2 is a metal-organic framework with potential for membrane applications.
Purpose of the Study:
- To incorporate defect-engineered UiO-66-NH2 into a polyamide layer.
- To fabricate and characterize a novel TFN membrane.
- To evaluate the performance of the TFN membrane for Na2SO4 solution separation.
Main Methods:
- Synthesis of defect-engineered UiO-66-NH2.
- Fabrication of TFN membranes via interfacial polymerization.
- Filtration experiments using Na2SO4 solutions.
- Analysis of membrane permeance and selectivity.
Main Results:
- Successful integration of defect-engineered UiO-66-NH2 into the polyamide matrix.
- Achieved simultaneous enhancement in water permeance.
- Demonstrated improved selectivity for Na2SO4 separation.
Conclusions:
- Defect engineering of UiO-66-NH2 is an effective strategy for TFN membrane enhancement.
- The developed TFN membrane shows promising performance for desalination and separation processes.
- This approach offers a new pathway for designing high-performance separation membranes.
