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Sung YH, Senthil Raja D, Huang JH, Tsai DH. Microfluidic-Aerosol Hyphenated Synthesis of Metal-Organic Framework-Derived Hybrid Catalysts for CO 2 Utilization. SMALL METHODS 2024; 8:e2301435. [PMID: 38161255 DOI: 10.1002/smtd.202301435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/19/2023] [Indexed: 01/03/2024]
Abstract
A new and efficient technique is developed by combining the hyphenated microfluidic- and aerosol-based synthesis with the coupled differential mobility analysis for the effective and continuous synthesis and simultaneous analysis of metal-organic frameworks (MOFs)-derived hybrid nanostructured products. HKUST-1, a copper-based MOF, is chosen as the representative to fabricate Cu-based hybrid catalysts for reverse water-gas shift (RWGS) reaction, an effective route for CO2 utilization. The effect of precursor concentration and carrier selection on the properties of the resulting products, including mobility size distribution, crystallization degree, surface area, and metal dispersion are investigated, as well as the correlation between the material properties of the synthesized catalysts and their catalytic performance in RWGS reaction in terms of conversion ratio/rate, selectivity, and operational stability. The results indicate that the continuous microfluidic droplet system can successfully synthesize MOF colloids, followed by the continuous production of MOF-derived hybrid materials through the tandem aerosol spray-drying-reaction system. High catalytic activity and low initiate temperature toward RWGS (turnover frequency = 0.0074 s-1; 450 °C) are achievable. The work facilitates the production and the designed concept of relevant MOF-derived hybrid nanostructured catalysts in the continuous synthesis system and the enhancement of applications in CO2 capture and utilization.
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Affiliation(s)
- Yi-Hsuan Sung
- Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu City, Taiwan, 300044, Republic of China
| | - Duraisamy Senthil Raja
- Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu City, Taiwan, 300044, Republic of China
| | - Jen-Huang Huang
- Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu City, Taiwan, 300044, Republic of China
| | - De-Hao Tsai
- Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu City, Taiwan, 300044, Republic of China
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Yu C, Cen X, Zhang Z, Sun Y, Xue W, Qiao Z, Guiver MD, Zhong C. Step-Nucleation In Situ Self-Repair to Prepare Rollable Large-Area Ultrathin MOF Membranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2307013. [PMID: 37643466 DOI: 10.1002/adma.202307013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/24/2023] [Indexed: 08/31/2023]
Abstract
Ultrathin membranes with ultrahigh permeance and good gas selectivity have the potential to greatly decrease separation process costs, but it requires the practical preparation of large area membranes for implementation. Metal-organic frameworks (MOFs) are very attractive for membrane gas separation applications. However, to date, the largest MOF membrane area reported in the literature is only about 100 cm2 . In the present study, a new step-nucleation in situ self-repair strategy is proposed that enables the preparation of large-area (2400 cm2 ) ultrathin and rollable MOF membranes deposited on an inexpensive flexible polymer membrane support layer for the first time, combining a polyvinyl alcohol (PVA)-metal-ion layer and a pure metal-ion layer. The main role of the pure metal-ion layer is to act as the main nucleation sites for MOF membrane growth, while the PVA-metal-ion layer acts as a slow-release metal-ion source, which supplements MOF crystal nucleation to repair any defects occurring. Membrane modules are necessary components for membrane applications, and spiral-wound modules are among the most common module formats that are widely applied in gas separation. A 4800 cm2 spiral-wound membrane module was successfully prepared, demonstrating the practical implementation of large-area MOF membranes.
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Affiliation(s)
- Caijiao Yu
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Xixi Cen
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhengqing Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Yuxiu Sun
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Wenjuan Xue
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhihua Qiao
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
| | - Michael D Guiver
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China
- National Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, 300072, China
| | - Chongli Zhong
- State Key Laboratory of Separation Membranes and Membrane Processes and School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, China
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Kang DY, Lee JS. Challenges in Developing MOF-Based Membranes for Gas Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2871-2880. [PMID: 36802624 DOI: 10.1021/acs.langmuir.2c03458] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Metal-organic frameworks (MOFs) are promising candidates for membrane gas separation. MOF-based membranes include pure MOF membranes and MOF-based mixed matrix membranes (MMMs). This Perspective discusses the challenges for the next stage of the development of MOF-based membranes based on research conducted in the past decade. We focused on three major issues associated with pure MOF membranes. First, some MOF compounds have been overstudied, despite the availability of numerous MOFs. Second, gas adsorption and diffusion in MOFs are often independently investigated. The correlation between adsorption and diffusion has seldom been discussed. Third, we identify the importance of characterizing the gas distribution in MOFs to understand the structure-property relationships for gas adsorption and diffusion in MOF membranes. For MOF-based MMMs, engineering the MOF-polymer interface is essential for achieving the desired separation performance. Various approaches to modify the MOF surface or polymer molecular structure have been proposed to improve the MOF-polymer interface. Herein, we present defect engineering as a facile and efficient approach for engineering the MOF-polymer interfacial morphology and its extended application for various gas separations.
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Affiliation(s)
- Dun-Yen Kang
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
- International Graduate Program of Molecular Science and Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Jong Suk Lee
- Department of Chemical and Biomolecular Engineering, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul 04107, Republic of Korea
- Institute of Emergent Materials, Sogang University, 35, Baekbeom-ro, Mapo-gu, Seoul 04107, Republic of Korea
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