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Hu L, Lee WI, Roy S, Subramanian A, Kisslinger K, Zhu L, Fan S, Hwang S, Bui VT, Tran T, Zhang G, Ding Y, Ajayan PM, Nam CY, Lin H. Hierarchically porous and single Zn atom-embedded carbon molecular sieves for H 2 separations. Nat Commun 2024; 15:5688. [PMID: 38971823 PMCID: PMC11227577 DOI: 10.1038/s41467-024-49961-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/24/2024] [Indexed: 07/08/2024] Open
Abstract
Hierarchically porous materials containing sub-nm ultramicropores with molecular sieving abilities and microcavities with high gas diffusivity may realize energy-efficient membranes for gas separations. However, rationally designing and constructing such pores into large-area membranes enabling efficient H2 separations remains challenging. Here, we report the synthesis and utilization of hybrid carbon molecular sieve membranes with well-controlled nano- and micro-pores and single zinc atoms and clusters well-dispersed inside the nanopores via the carbonization of supramolecular mixed matrix materials containing amorphous and crystalline zeolitic imidazolate frameworks. Carbonization temperature is used to fine-tune pore sizes, achieving ultrahigh selectivity for H2/CO2 (130), H2/CH4 (2900), H2/N2 (880), and H2/C2H6 (7900) with stability against water vapor and physical aging during a continuous 120-h test.
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Affiliation(s)
- Leiqing Hu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Won-Il Lee
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Soumyabrata Roy
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
- Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India
| | - Ashwanth Subramanian
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Kim Kisslinger
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Lingxiang Zhu
- Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, USA
| | - Shouhong Fan
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, USA
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Vinh T Bui
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Thien Tran
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Gengyi Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Yifu Ding
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, USA
| | - Pulickel M Ajayan
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
| | - Chang-Yong Nam
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Haiqing Lin
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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Tajik M, Bin Haque SF, Perez EV, Vizuet JP, Firouzi HR, Balkus KJ, Musselman IH, Ferraris JP. Pillared Carbon Membranes Derived from Cardo Polymers. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2291. [PMID: 37630876 PMCID: PMC10457760 DOI: 10.3390/nano13162291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
Carbon molecular sieve membranes (CMSMs) were prepared by carbonizing the high free volume polyimide BTDA-BAF that is obtained from the reaction of benzophenone-3,3',4,4'-tetracarboxylic dianhydride (BTDA) and 9,9-bis(4-aminophenyl) fluorene (BAF). The bulky cardo groups prevented a tight packing and rotation of the chains that leads to high permeabilities of their CMSMs. The incorporation of metal-organic polyhedra 18 (MOP-18, a copper-based MOP) in the BTDA-BAF polymer before pyrolysis at 550 °C prevented the collapse of the pores and the aging of the CMSMs. It was found that upon decomposition of MOP-18, a distribution of copper nanoparticles minimized the collapse of the graphitic sheets that formed the micropores and mesopores in the CMSM. The pillared CMSMs displayed CO2 and CH4 permeabilities of 12,729 and 659 Barrer, respectively, with a CO2/CH4 selectivity of 19.3 after 3 weeks of aging. The permselectivity properties of these membranes was determined to be at the 2019 Robeson upper bound. In contrast, the CMSMs from pure BTDA-BAF aged three times faster than the CMSMs from MOP-18/BTDA-BAF and exhibited lower CO2 and CH4 permeabilities of 5337 and 573 Barrer, respectively, with a CO2/CH4 selectivity of 9.3. The non-pillared CMSMs performed below the upper bound.
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Affiliation(s)
| | | | | | | | | | | | | | - John P. Ferraris
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, TX 75080-3021, USA; (M.T.); (S.F.B.H.); (E.V.P.); (J.P.V.); (H.R.F.); (K.J.B.J.); (I.H.M.)
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Liu G, Li R, Chen X, Cheng L, Liu Y, Liu G, Jin W. Pyrolysis temperature-regulated gas transport and aging properties in 6FDA-DAM polyimide-derived carbon molecular sieve membranes. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Xu R, Xu X, Wang Y, Hou M, Li L, Pan Z, Song C, Wang T. MOF-derived nanocomposites functionalized carbon molecular sieve membrane for enhanced ethylene/ethane separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Morphology Effect of Zinc Oxide Nanoparticles on the Gas Separation Performance of Polyurethane Mixed Matrix Membranes for CO2 Recovery from CH4, O2, and N2. MEMBRANES 2022; 12:membranes12060577. [PMID: 35736291 PMCID: PMC9230613 DOI: 10.3390/membranes12060577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/28/2022] [Accepted: 05/29/2022] [Indexed: 11/17/2022]
Abstract
The effect of the morphology and content of zinc oxide nanoparticles (ZnO-NPs) on the physicochemical, mechanical, and gas transport properties of the polyurethane (PU) mixed matrix membranes (MMMs) with respect to CO2 recovery from CH4, O2, and N2 was studied. The MMMs based on PU with spherical and rod-shaped ZnO-NPs at various loadings, namely, 0.05, 0.1, 0.5, 1, and 2 wt. %, were prepared with membrane density control and studied using AFM, wettability measurements, surface free energy calculation, gas separation and mechanical testing. To evaluate the resistance of the ZnO-NPs to agglomeration in the polymer solutions, zeta potential was determined. The ZnO-NPs with average cross sectional size of 30 nm were obtained by plasma-enhanced chemical vapor deposition (PECVD) from elemental high-purity zinc in a zinc-oxygen-hydrogen plasma-forming gas mixture. It was established that the spherical ZnO-NPs are promising to improve the gas performance of PU-based MMMs for CO2 recovery from natural gas, while the rod-shaped NPs better demonstrate their potential in capturing CO2 in flue gases.
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