Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions
Composite polymolecular separation membranes were prepared by combining multi-branched ZIF-L with high-porosity electrospinning nanofibers PI. Meanwhile, PDA and PEI were introduced into the membrane in order to improve its adhesion. The new membrane is called the “PI@PDA@PEI/ZIF-L-4” composite memb...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/23/4600 |
| _version_ | 1797399675542700032 |
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| author | Hui Cao Ziyue Jiang Jing Tang Qiong Zhou |
| author_facet | Hui Cao Ziyue Jiang Jing Tang Qiong Zhou |
| author_sort | Hui Cao |
| collection | DOAJ |
| description | Composite polymolecular separation membranes were prepared by combining multi-branched ZIF-L with high-porosity electrospinning nanofibers PI. Meanwhile, PDA and PEI were introduced into the membrane in order to improve its adhesion. The new membrane is called the “PI@PDA@PEI/ZIF-L-4” composite membrane. Compared with the PI@PDA@PEI/ZIF-8 composite membrane, the new membrane’s filtration rates for heavy metal ions such as Cd<sup>2+</sup>, Cr<sup>3+</sup>, and Pb<sup>2+</sup> were increased by 7.0%, 6.6%, and 9.3%, respectively. Furthermore, the new membrane has a permeability of up to 1140.0 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, and displayed a very stable performance after four repeated uses. The separation mechanism of the PI@PDA@PEI/ZIF-L composite membrane was analyzed further in order to provide a basis to support the production of separation membranes with a high barrier rate and high flux. |
| first_indexed | 2024-03-09T01:44:31Z |
| format | Article |
| id | doaj.art-ee6193579a4d40c183dde67ce0e9dbe2 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T01:44:31Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-ee6193579a4d40c183dde67ce0e9dbe22023-12-08T15:24:33ZengMDPI AGPolymers2073-43602023-12-011523460010.3390/polym15234600Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal IonsHui Cao0Ziyue Jiang1Jing Tang2Qiong Zhou3College of New Energy and Materials, China University of Petroleum, Beijing 102249, ChinaThe Experimental High School Attached to Beijing Normal University, Beijing 102249, ChinaHuakang Sub-District Office of Jinghai District People’s Government, Tianjin 301617, ChinaCollege of New Energy and Materials, China University of Petroleum, Beijing 102249, ChinaComposite polymolecular separation membranes were prepared by combining multi-branched ZIF-L with high-porosity electrospinning nanofibers PI. Meanwhile, PDA and PEI were introduced into the membrane in order to improve its adhesion. The new membrane is called the “PI@PDA@PEI/ZIF-L-4” composite membrane. Compared with the PI@PDA@PEI/ZIF-8 composite membrane, the new membrane’s filtration rates for heavy metal ions such as Cd<sup>2+</sup>, Cr<sup>3+</sup>, and Pb<sup>2+</sup> were increased by 7.0%, 6.6%, and 9.3%, respectively. Furthermore, the new membrane has a permeability of up to 1140.0 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, and displayed a very stable performance after four repeated uses. The separation mechanism of the PI@PDA@PEI/ZIF-L composite membrane was analyzed further in order to provide a basis to support the production of separation membranes with a high barrier rate and high flux.https://www.mdpi.com/2073-4360/15/23/4600ZIF-Lnanofibersheavy metal separation membraneheavy metal ionsfiltration ratepermeability |
| spellingShingle | Hui Cao Ziyue Jiang Jing Tang Qiong Zhou Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions Polymers ZIF-L nanofibers heavy metal separation membrane heavy metal ions filtration rate permeability |
| title | Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions |
| title_full | Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions |
| title_fullStr | Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions |
| title_full_unstemmed | Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions |
| title_short | Effects of ZIF-L Morphology on PI@PDA@PEI/ZIF-L Composite Membrane’s Adsorption and Separation Properties for Heavy Metal Ions |
| title_sort | effects of zif l morphology on pi pda pei zif l composite membrane s adsorption and separation properties for heavy metal ions |
| topic | ZIF-L nanofibers heavy metal separation membrane heavy metal ions filtration rate permeability |
| url | https://www.mdpi.com/2073-4360/15/23/4600 |
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