Wen, Qi ; Yan, Dongxiao ; Liu, Feng ; Wang, Mao ; Ling, Yun ; Wang, Pengfei ; Kluth, Patrick ; Schauries, Daniel ; Trautmann, Christina ; Apel, Pavel ; Guo, Wei ; Xiao, Guoqing ; Liu, Jie ; Xue, Jianming ; Wang, Yugang (2016)
Highly selective ionic transport through subnanometer pores in polymer films.
In: Advanced Functional Materials, 26 (32)
doi: 10.1002/adfm.201601689
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Novel transport phenomena through nanopores are expected to emerge as their diameters approach subnanometer scales. However, it has been challenging to explore such a regime experimentally. Here, this study reports on polymer subnanometer pores exhibiting unique selective ionic transport. 12 μm long, parallel oriented polymer nanopores are fabricated in polyethylene terephthalate (PET) films by irradiation with GeV heavy ions and subsequent 3 h exposure to UV radiation. These nanopores show ionic transport selectivity spanning more than 6 orders of magnitude: the order of the transport rate is Li+>Na+>K+>Cs+>>Mg2+>Ca2+>Ba2+, and heavy metal ions such as Cd2+ and anions are blocked. The transport can be switched off with a sharp transition by decreasing the pH value of the electrolyte. Structural measurements and molecular dynamics simulations suggest that the ionic transport is attributed to negatively charged nanopores with pore radii of ≈0.3 nm, and the selectivity is associated with the dehydration effect.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Wen, Qi ; Yan, Dongxiao ; Liu, Feng ; Wang, Mao ; Ling, Yun ; Wang, Pengfei ; Kluth, Patrick ; Schauries, Daniel ; Trautmann, Christina ; Apel, Pavel ; Guo, Wei ; Xiao, Guoqing ; Liu, Jie ; Xue, Jianming ; Wang, Yugang |
| Art des Eintrags: | Bibliographie |
| Titel: | Highly selective ionic transport through subnanometer pores in polymer films |
| Sprache: | Englisch |
| Publikationsjahr: | 23 August 2016 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Functional Materials |
| Jahrgang/Volume einer Zeitschrift: | 26 |
| (Heft-)Nummer: | 32 |
| DOI: | 10.1002/adfm.201601689 |
| Kurzbeschreibung (Abstract): | Novel transport phenomena through nanopores are expected to emerge as their diameters approach subnanometer scales. However, it has been challenging to explore such a regime experimentally. Here, this study reports on polymer subnanometer pores exhibiting unique selective ionic transport. 12 μm long, parallel oriented polymer nanopores are fabricated in polyethylene terephthalate (PET) films by irradiation with GeV heavy ions and subsequent 3 h exposure to UV radiation. These nanopores show ionic transport selectivity spanning more than 6 orders of magnitude: the order of the transport rate is Li+>Na+>K+>Cs+>>Mg2+>Ca2+>Ba2+, and heavy metal ions such as Cd2+ and anions are blocked. The transport can be switched off with a sharp transition by decreasing the pH value of the electrolyte. Structural measurements and molecular dynamics simulations suggest that the ionic transport is attributed to negatively charged nanopores with pore radii of ≈0.3 nm, and the selectivity is associated with the dehydration effect. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 11 Mär 2024 13:24 |
| Letzte Änderung: | 11 Mär 2024 13:24 |
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