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High-Flux Ultrafiltration Membranes Combining Artificial Water Channels and Covalent Organic Frameworks.

ABSTRACT: Artificial water channels (AWCs) have been well investigated, and the imidazole-quartet water channel is one of the representative channels. In this work, covalent organic frameworks (COFs) composite membranes were fabricated through assembling COF layers and imidazole-quartet water channel. The membranes were synthesized by interfacial polymerization and self-assembly process, using polyacrylonitrile (PAN) ultrafiltration substrates with artificial water channels (HC6H) as modifiers. Effective combination of COF layers and imidazole-quartet water channels provide the membrane with excellent performance. The as-prepared membrane exhibits a water permeance above 271.7 L·m^-2·h^-1·bar^-1, and high rejection rate (>99.5%) for CR. The results indicated that the composite structure based on AWCs and COFs may provide a new idea for the development of high-performance membranes for dye separation.

SUBMITTER: Liu K

PROVIDER: S-EPMC9503389 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature

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High-Flux Ultrafiltration Membranes Combining Artificial Water Channels and Covalent Organic Frameworks.

Liu Kai K Guo Jinwen J Li Yingdong Y Chen Jinguang J Li Pingli P

Membranes 20220824 9

Artificial water channels (AWCs) have been well investigated, and the imidazole-quartet water channel is one of the representative channels. In this work, covalent organic frameworks (COFs) composite membranes were fabricated through assembling COF layers and imidazole-quartet water channel. The membranes were synthesized by interfacial polymerization and self-assembly process, using polyacrylonitrile (PAN) ultrafiltration substrates with artificial water channels (HC6H) as modifiers. Effective ...[more]

PMID: 36135843

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