Defective UiO-66 induced PVA-based Mixed Matrix Membrane (MMMs) for High-Performance water/IPA Separation through Pervaporation
- Abstract
- 금속 유기 골격체(Metal-Organic Frameworks, MOFs)는 넓은 표면적, 독특한 기공 구조 및 높은 변형가능성 등 다양한 특성으로 인해 가스 분리, 멤브레인, 촉매 등 다양한 분야에 활용되고 있다. 하지만, 고분자와의 상용성이 부족해 활용성이 떨어지는 단점이 있다. 특히 멤브레인에서 고분자와의 상호작용이 부족해 공극, 입자 뭉침 등 현상이 발생하고 이는 막의 기계적 안정성 및 성능의 저하를 유도한다. 본 연구에서는 MOF 입자에 의도적으로 결함을 유도해 고분자와 상호작용할 수 있는 작용기를 더 많이 형성함을 통해 고분자와의 상용성을 늘리려 한다. 이를 통해 고분자와 더 강한 상호작용을 형성하여 입자의 분산성을 향상시켜 멤브레인 내부의 공극, 입자 뭉침 등의 현상을 극복하여 멤브레인 안정성 및 성능을 향상시키고자 한다.|Metal-Organic Frameworks (MOFs) are widely used in various applications such as gas separation, membranes, and catalysts due to their high surface area, unique pore structure, and high tunability. However, the lack of compatibility with polymers remains a limitation in its practical application. Especially, in membranes, voids (sieve in the cage), particle agglomeration can be occurred by weak interfacial interactions between MOFs and polymers which is decreasing membrane’s stability and performance. In this study, we aim to enhance the compatibility with polymers by intentionally inducing defects in MOF particles to generate more functional groups capable of interacting with polymers. This approach seeks to form stronger interactions with polymers, thereby improving particle dispersion, overcoming issues such as voids and particle agglomeration within the membrane, and ultimately enhancing membrane stability and performance.
- Author(s)
- 최경민
- Issued Date
- 2025
- Awarded Date
- 2025-02
- Type
- Dissertation
- Keyword
- Mixed Matrix Membranes, Polyvinyl alcohol, Metal-organic Frameworks, Defect engineering, Interface engineering, Pervaporation
- Publisher
- 국립부경대학교 대학원
- URI
- https://repository.pknu.ac.kr:8443/handle/2021.oak/33953
http://pknu.dcollection.net/common/orgView/200000865879
- Alternative Author(s)
- Gyeong Min Choi
- Affiliation
- 국립부경대학교 대학원
- Department
- 대학원 공업화학과
- Advisor
- Kie Yong Cho
- Table Of Contents
- Chapter 1. Introduction 1
1-1. Metal-Organic Frameworks 1
1-2. Water/IPA Separation 3
1-3. Limitations of Mixed Matrix Membranes 5
1-4. Strategies for Enhancing Interfacial Interaction 7
Chapter 2. Experimental 9
2-1. Materials 9
2-2. Synthesis of Conventional and Defective UiO-66 10
2-3. Fabrication of free-standing PVA membranes 12
2-4. Fabrication of free-standing PUiO66 and PDUiO66 MMMs 13
2-5. Fabrication of Flat-sheet type XPUiO66 and XPDUiO66 MMMs 14
2-6. Fabrication of hollow fiber type XPDUiO66 membranes 16
2-7. Chracterizations 17
2-8. Pervaporation test 19
Chapter 3. Results and Discussions 22
3-1. Synthesis and property evaluation of defective UiO-66 (DUiO66) 22
3-2. Fabrication and Characterization of PVA based MMMs 33
3-3. Pervaporation performance of PDUiO66 MMMs 42
Chapter 4. Conclusions 61
Chapter 5. References 64
Chapter 6. Appendix 70
Acknowledgement 85
- Degree
- Master
-
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- 대학원 > 공업화학과
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