Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving
Abstract The high performance of two-dimensional (2D) channel membranes is generally achieved by preparing ultrathin or forming short channels with less tortuous transport through self-assembly of small flakes, demonstrating potential for highly efficient water desalination and purification, gas and...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56358-z |
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| author | Changdao Han Jie Jiang Liuhua Mu Wenhui Zhao Junfan Liu Jian Lan Shouyuan Hu Huan Yang Shan Gao Feng Zhou Junlang Chen Yan Fan Xiangmei Duan Pei Li Liang Chen |
| author_facet | Changdao Han Jie Jiang Liuhua Mu Wenhui Zhao Junfan Liu Jian Lan Shouyuan Hu Huan Yang Shan Gao Feng Zhou Junlang Chen Yan Fan Xiangmei Duan Pei Li Liang Chen |
| author_sort | Changdao Han |
| collection | DOAJ |
| description | Abstract The high performance of two-dimensional (2D) channel membranes is generally achieved by preparing ultrathin or forming short channels with less tortuous transport through self-assembly of small flakes, demonstrating potential for highly efficient water desalination and purification, gas and ion separation, and organic solvent waste treatment. Here, we report the construction of vertical channels in graphene oxide (GO) membrane based on a substrate template with asymmetric pores. The membranes achieved water permeance of 2647 L m−2 h−1 bar−1 while still maintaining an ultrahigh rejection rate of 99.9% for heavy metal ions, which is superior to the state-of-the-art 2D membranes reported. Furthermore, the membranes exhibited excellent stability during long-term filtration experiments for at least 48 h, as well as resistance to ultrasonic treatment for over 100 minutes. The vertical channels possess very short pathway for almost direct water transport and a highly effective channel area, meanwhile the asymmetric porous template enhances the packing of the inserted GO nanosheets to avoid the swelling effect of membrane. Our work provides a simple way to fabricate vertical channels of 2D nanofiltration membranes with high water purification performance. |
| format | Article |
| id | doaj-art-0cf86ca4c66a45ec8d4e49477eee707b |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-0cf86ca4c66a45ec8d4e49477eee707b2025-01-26T12:42:45ZengNature PortfolioNature Communications2041-17232025-01-011611710.1038/s41467-025-56358-zQuasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sievingChangdao Han0Jie Jiang1Liuhua Mu2Wenhui Zhao3Junfan Liu4Jian Lan5Shouyuan Hu6Huan Yang7Shan Gao8Feng Zhou9Junlang Chen10Yan Fan11Xiangmei Duan12Pei Li13Liang Chen14School of Physical Science and Technology, Ningbo UniversitySchool of Physical Science and Technology, Ningbo UniversityWenzhou Institute, University of Chinese Academy of SciencesSchool of Physical Science and Technology, Ningbo UniversityZhejiang GuoFu Environmental Technology Co.,LtdZhejiang GuoFu Environmental Technology Co.,LtdSchool of Physical Science and Technology, Ningbo UniversitySchool of Physical Science and Technology, Ningbo UniversitySchool of Physical Science and Technology, Ningbo UniversityZhejiang GuoFu Environmental Technology Co.,LtdDepartment of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F UniversityDepartment of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F UniversitySchool of Physical Science and Technology, Ningbo UniversitySchool of Physical Science and Technology, Ningbo UniversitySchool of Physical Science and Technology, Ningbo UniversityAbstract The high performance of two-dimensional (2D) channel membranes is generally achieved by preparing ultrathin or forming short channels with less tortuous transport through self-assembly of small flakes, demonstrating potential for highly efficient water desalination and purification, gas and ion separation, and organic solvent waste treatment. Here, we report the construction of vertical channels in graphene oxide (GO) membrane based on a substrate template with asymmetric pores. The membranes achieved water permeance of 2647 L m−2 h−1 bar−1 while still maintaining an ultrahigh rejection rate of 99.9% for heavy metal ions, which is superior to the state-of-the-art 2D membranes reported. Furthermore, the membranes exhibited excellent stability during long-term filtration experiments for at least 48 h, as well as resistance to ultrasonic treatment for over 100 minutes. The vertical channels possess very short pathway for almost direct water transport and a highly effective channel area, meanwhile the asymmetric porous template enhances the packing of the inserted GO nanosheets to avoid the swelling effect of membrane. Our work provides a simple way to fabricate vertical channels of 2D nanofiltration membranes with high water purification performance.https://doi.org/10.1038/s41467-025-56358-z |
| spellingShingle | Changdao Han Jie Jiang Liuhua Mu Wenhui Zhao Junfan Liu Jian Lan Shouyuan Hu Huan Yang Shan Gao Feng Zhou Junlang Chen Yan Fan Xiangmei Duan Pei Li Liang Chen Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving Nature Communications |
| title | Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| title_full | Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| title_fullStr | Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| title_full_unstemmed | Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| title_short | Quasi-vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| title_sort | quasi vertically asymmetric channels of graphene oxide membrane for ultrafast ion sieving |
| url | https://doi.org/10.1038/s41467-025-56358-z |
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