Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability
文献类型：期刊论文
| 作者 | Fan, Chunyang2,3; Cao, Li2,3; Yang, Chao2,3; Xiao, Qianxiang7; You, Xinda2,3; Wang, Xiaoyao2,3; Kong, Yan2,3; Wu, Hong2,3,4; Liu, Yawei1; Jiang, Zhongyi2,3,5,6 |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2022-03-05 |
| 卷号 | 645页码:10 |
| 关键词 | Covalent organic framework Charged nanochannel Molecular dynamics simulation Proton exchange membrane Methanol permeability |
| ISSN号 | 0376-7388 |
| DOI | 10.1016/j.memsci.2021.120186 |
| 英文摘要 | Covalent organic frameworks (COFs) with long-range ordered, rigid, and tailor-made nanochannels hold great promise for energy-related applications. Here, we fabricate COF membranes with one-dimensional charged nanochannels using ionic COF nanosheets decorated with sulfonic acid groups. The free-standing and robust COF membrane exhibits enhanced proton conductivity and suppressed methanol permeability compared to the benchmark Nafion membrane. More interestingly, the methanol permeability of the COF membrane remains almost constant in a wide range of methanol concentrations (5.35 x 10(-7) cm(2) s(-1) for the 2 M methanol/water mixture and 5.44 x 10(-7) cm(2 & nbsp;& nbsp;)s(-1) for the neat methanol). All-atomistic dynamics simulations indicate that the diffusio-osmotic effect arising from the charged nanochannels can account for the low and nearly constant methanol permeability of the COF membranes. These findings suggest that the ionic COF membranes can find potential applications in direct methanol fuel cell with high methanol concentrations, and meanwhile shed light on the mass transport mechanism in the charged, rigid and ordered nanochannels. |
| WOS关键词 | COVALENT ORGANIC FRAMEWORKS ; POLYMER ELECTROLYTE MEMBRANES ; PROTON CONDUCTIVITY ; ION-TRANSPORT |
| 资助项目 | National Natural Science Foundation of China[U20B2024] ; National Natural Science Foundation of China[21878215] ; National Natural Science Foundation of China[21621004] |
| WOS研究方向 | Engineering ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000799054600003 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53487]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wu, Hong; Liu, Yawei; Jiang, Zhongyi |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China 2.Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China 3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 4.Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China 5.Natl Univ Singapore, Joint Sch, Binhai New City 350207, Fujian, Peoples R China 6.Tianjin Univ, Int Campus, Binhai New City 350207, Fujian, Peoples R China 7.Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Chunyang,Cao, Li,Yang, Chao,et al. Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability[J]. JOURNAL OF MEMBRANE SCIENCE,2022,645:10. |
| APA | Fan, Chunyang.,Cao, Li.,Yang, Chao.,Xiao, Qianxiang.,You, Xinda.,...&Jiang, Zhongyi.(2022).Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability.JOURNAL OF MEMBRANE SCIENCE,645,10. |
| MLA | Fan, Chunyang,et al."Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability".JOURNAL OF MEMBRANE SCIENCE 645(2022):10. |
入库方式： OAI收割
来源：过程工程研究所
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