Mixed matrix membranes for post-combustion carbon capture: From materials design to membrane engineering
Mixed matrix membranes for post-combustion carbon capture: From materials design to membrane engineering
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DOI：
10.1016/j.memsci.2021.120140
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发表时间：
2022-02-15
影响因子：
9.5
通讯作者：
Lin, Haiqing
中科院分区：
文献类型：
--
作者：
Hu, Leiqing;Clark, Krysta;Lin, Haiqing
含有分散在连续聚合物基质中的纳米填料的混合基质材料 (MMM) 已成为一个令人兴奋的多功能平台，可用于开发具有卓越 CO2/N-2 分离性能的膜，用于燃烧后碳捕获。聚合物和纳米填料都可以垂直设计和工程，以结合优异的加工性能（源自聚合物）和强大的尺寸筛分能力或/和显着的永久孔隙率（源自纳米填料）的优点。然而，MMM 面临着重大挑战，如界面不相容、颗粒团聚和薄膜成型性差等。该报告对具有前景的 CO2/N-2 分离性能的各种聚合物和纳米填料（例如金属有机框架、共价有机框架和二维材料）进行了全面而批判性的评论。我们详尽地描述了提高界面相容性的策略，例如聚合物和纳米填料的原位合成以及两种组分的功能化以提高粘附力。此外，我们重点介绍了将 MMM 设计成薄膜复合 (TFC) 膜的各种方法。该评论揭示了这些 MMM 中的结构/性质关系，并概述了实现其实际应用潜力的挑战和机遇。
Mixed matrix materials (MMMs) containing nanofillers dispersed in continuous polymer matrices have emerged as an exciting and versatile platform to develop membranes with superior CO2/N-2 separation performance for post-combustion carbon capture. Both polymers and nanofillers can be vertically designed and engineered to combine the advantages of excellent processability (derived from polymers) and strong size-sieving ability or/and significant permanent porosity (originated from nanofillers). However, the MMMs face major challenges, such as interfacial incompatibility, particle agglomeration, and poor thin-film formability. This report provides a comprehensive yet critical review of various polymers and nanofillers (such as metal-organic frameworks, covalent organic frameworks, and two-dimensional materials) with promising CO2/N-2 separation properties. We exhaustively describe strategies to improve interfacial compatibility, such as in situ syntheses of polymers and nanofillers and functionalization of both components to improve adhesion. Moreover, we highlight various approaches to engineer the MMMs into thin-film composite (TFC) membranes. The review reveals the structure/property relationship in these MMMs and outlines the challenges and opportunities to realize their potential for practical applications.