A path forward: Understanding and mitigating defects in polycrystalline membranes
Article
Dorosti, Fatereh Dorosti, Ge, Lei, Wang, Hao and Zhu, Zhonghua. 2023. "A path forward: Understanding and mitigating defects in polycrystalline membranes." Progress in Materials Science. 137. https://doi.org/10.1016/j.pmatsci.2023.101123
Article Title | A path forward: Understanding and mitigating defects in polycrystalline membranes |
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ERA Journal ID | 42015 |
Article Category | Article |
Authors | Dorosti, Fatereh Dorosti, Ge, Lei, Wang, Hao and Zhu, Zhonghua |
Journal Title | Progress in Materials Science |
Journal Citation | 137 |
Article Number | 101123 |
Number of Pages | 36 |
Year | 2023 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0079-6425 |
1873-2208 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.pmatsci.2023.101123 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0079642523000555 |
Abstract | The global popularity of membrane separation is growing due to its high energy efficiency, small footprint, low capital, and operating cost, and especially its environmentally friendly process flexibility. Polycrystalline materials with high porosity, flexible micropore size, and functional tunability are promising membrane materials. However, the achieved membrane separation efficiency is still far from the potential value predicted by material simulation mostly due to the existence of undesirable membrane imperfectness. Apart from the awareness of bulk film cracks, the impact of intercrystalline defects on the total performance of membranes is usually not well acknowledged. Defect formation is one of the bottleneck issues in polycrystalline membranes which not only significantly affects the efficiency of the membrane but also have an inevitable impact on its repeatability and process feasibility. Most research efforts in the polycrystalline membrane area have been devoted to developing novel structured polycrystalline materials. However, the summary of polycrystalline materials is beyond the scope of this work, instead, we complement existing membrane material reviews with a critical analysis of defect formation and mitigation strategies. This review presents the recent opportunities and challenges in polycrystalline membrane fabrication, emphasizing the issue of unfavorable defect formation. The state-of-the-art solutions and strategies for mitigating defects have been reviewed and evaluated in detail. Finally, further understanding of defect formation and future research directions on characterization, defect evaluation, and membrane remediation have been outlined. This review offers valuable insights into fabricating compact polycrystalline membranes with high separation efficiency for various separation systems. |
Keywords | Compact; Polycrystalline membranes ; Defects; Metal-organic frameworks (MOFs) ; Separation; Covalent organic frameworks (COFs) |
ANZSRC Field of Research 2020 | 400409. Separation technologies |
340207. Metal organic frameworks | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Centre for Future Materials |
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