Hydrogen-bonded organic framework membranes through dispersion-controlled deposition method for efficient CO2 separation

IF 3.5 3区 工程技术 Q2 ENGINEERING, CHEMICAL AIChE Journal Pub Date : 2025-02-11 DOI:10.1002/aic.18771
Yuhan Wang, Yanxiong Ren, Yu Cao, Junyi Zhao, Jingqi Fu, Guangwei He, Ziting Zhu, Qian Sun, Fusheng Pan, Zhongyi Jiang
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Abstract

Hydrogen-bonded organic frameworks (HOFs) feature a highly ordered pore structure, abundant organic functional groups, and unique solution-processability, holding great promise in gas separations. In this study, we explored the fabrication of HOF membranes utilizing a dispersion-controlled deposition (DCD) method. To achieve homogeneous dispersion, the bulk HOF aggregates were initially dispersed in solvent and then switched to anti-solvent to generate the precipitated nanoparticles. Under vacuum-assisted assembly, the HOF colloidal solution containing nanoparticles was uniformly deposited, and the intracrystalline defects were spontaneously healed during the mixed-solvent evaporation. For the first time, HOF polycrystalline membranes were fabricated on flexible polymer substrates and demonstrated an ultrathin HOF selective layer of ~100 nm. The prepared HOF membranes exhibited high separation performance, with the CO2 permeance exceeding 600 GPU and the CO2/N2 selectivity exceeding 30. This work establishes a platform technology for HOF membrane fabrication and expands the families of carbon capture membranes.
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来源期刊
AIChE Journal
AIChE Journal 工程技术-工程:化工
CiteScore
7.10
自引率
10.80%
发文量
411
审稿时长
3.6 months
期刊介绍: The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.
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