A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation
Mixing a polymer matrix and nanofiller to prepare a mixed matrix membrane (MMM) is an effective method for enhancing gas separation performance. In this work, a unique UiO-66-decorated halloysite nanotubes composite material (UiO-66@HNT) was successfully synthesized via a solvothermal method and dis...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/11/9/693 |
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| author | Fei Guo Bingzhang Li Rui Ding Dongsheng Li Xiaobin Jiang Gaohong He Wu Xiao |
| author_facet | Fei Guo Bingzhang Li Rui Ding Dongsheng Li Xiaobin Jiang Gaohong He Wu Xiao |
| author_sort | Fei Guo |
| collection | DOAJ |
| description | Mixing a polymer matrix and nanofiller to prepare a mixed matrix membrane (MMM) is an effective method for enhancing gas separation performance. In this work, a unique UiO-66-decorated halloysite nanotubes composite material (UiO-66@HNT) was successfully synthesized via a solvothermal method and dispersed into the Pebax-1657 matrix to prepare MMMs for CO<sub>2</sub>/N<sub>2</sub> separation. A remarkable characteristic of this MMM was that the HNT lumen provided the highway for CO<sub>2</sub> diffusion due to the unique affinity of UiO-66 for CO<sub>2</sub>. Simultaneously, the close connection of the UiO-66 layer on the external surface of HNTs created relatively continuous pathways for gas permeation. A suite of microscopy, diffraction, and thermal techniques was used to characterize the morphology and structure of UiO-66@HNT and the membranes. As expected, the embedding UiO-66@HNT composite materials significantly improved the separation performances of the membranes. Impressively, the as-obtained membrane acquired a high CO<sub>2</sub> permeability of 119.08 Barrer and CO<sub>2</sub>/N<sub>2</sub> selectivity of 76.26. Additionally, the presence of UiO-66@HNT conferred good long-term stability and excellent interfacial compatibility on the MMMs. The results demonstrated that the composite filler with fast transport pathways designed in this study was an effective strategy to enhance gas separation performance of MMMs, verifying its application potential in the gas purification industry. |
| first_indexed | 2024-03-10T07:27:07Z |
| format | Article |
| id | doaj.art-836a54bae7d04c01aa381e0413ebe343 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T07:27:07Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-836a54bae7d04c01aa381e0413ebe3432023-11-22T14:10:31ZengMDPI AGMembranes2077-03752021-09-0111969310.3390/membranes11090693A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> SeparationFei Guo0Bingzhang Li1Rui Ding2Dongsheng Li3Xiaobin Jiang4Gaohong He5Wu Xiao6State Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaState Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, ChinaMixing a polymer matrix and nanofiller to prepare a mixed matrix membrane (MMM) is an effective method for enhancing gas separation performance. In this work, a unique UiO-66-decorated halloysite nanotubes composite material (UiO-66@HNT) was successfully synthesized via a solvothermal method and dispersed into the Pebax-1657 matrix to prepare MMMs for CO<sub>2</sub>/N<sub>2</sub> separation. A remarkable characteristic of this MMM was that the HNT lumen provided the highway for CO<sub>2</sub> diffusion due to the unique affinity of UiO-66 for CO<sub>2</sub>. Simultaneously, the close connection of the UiO-66 layer on the external surface of HNTs created relatively continuous pathways for gas permeation. A suite of microscopy, diffraction, and thermal techniques was used to characterize the morphology and structure of UiO-66@HNT and the membranes. As expected, the embedding UiO-66@HNT composite materials significantly improved the separation performances of the membranes. Impressively, the as-obtained membrane acquired a high CO<sub>2</sub> permeability of 119.08 Barrer and CO<sub>2</sub>/N<sub>2</sub> selectivity of 76.26. Additionally, the presence of UiO-66@HNT conferred good long-term stability and excellent interfacial compatibility on the MMMs. The results demonstrated that the composite filler with fast transport pathways designed in this study was an effective strategy to enhance gas separation performance of MMMs, verifying its application potential in the gas purification industry.https://www.mdpi.com/2077-0375/11/9/693composite materialUiO-66HNTmixed matrix membraneCO<sub>2</sub>/N<sub>2</sub> separation |
| spellingShingle | Fei Guo Bingzhang Li Rui Ding Dongsheng Li Xiaobin Jiang Gaohong He Wu Xiao A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation Membranes composite material UiO-66 HNT mixed matrix membrane CO<sub>2</sub>/N<sub>2</sub> separation |
| title | A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation |
| title_full | A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation |
| title_fullStr | A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation |
| title_full_unstemmed | A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation |
| title_short | A Novel Composite Material UiO-66@HNT/Pebax Mixed Matrix Membranes for Enhanced CO<sub>2</sub>/N<sub>2</sub> Separation |
| title_sort | novel composite material uio 66 hnt pebax mixed matrix membranes for enhanced co sub 2 sub n sub 2 sub separation |
| topic | composite material UiO-66 HNT mixed matrix membrane CO<sub>2</sub>/N<sub>2</sub> separation |
| url | https://www.mdpi.com/2077-0375/11/9/693 |
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