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| Titel in Übersetzung | Wasser-Hochflussmembranen auf Basis der kovalenten organischen Gerüststruktur COF-LZU1 für die Farbstoffabtrennung durch Nanofiltration |
|---|---|
| Originalsprache | Englisch |
| Seiten (von - bis) | 4083-4087 |
| Seitenumfang | 5 |
| Fachzeitschrift | Angewandte Chemie - International Edition |
| Jahrgang | 57 |
| Ausgabenummer | 15 |
| Frühes Online-Datum | 5 Feb. 2018 |
| Publikationsstatus | Veröffentlicht - 26 März 2018 |
Abstract
Covalent organic frameworks (COFs) are attractive candidates for advanced water-treatment membranes owing to their high porosity and well-organized channel structures. Herein, the continuous two-dimensional imine-linked COF-LZU1 membrane with a thickness of only 400 nm was prepared on alumina tubes by in situ solvothermal synthesis. The membrane shows excellent water permeance (ca. 760 L m−2 h−1 MPa−1) and favorable rejection rates exceeding 90 % for water-soluble dyes larger than 1.2 nm. The water permeance through the COF-LZU1 membrane is much higher than that of most membranes with similar rejection rates. Long-time operation demonstrates the outstanding stability of the COF-LZU1 membrane. As the membrane has no selectivity for hydrated salt ions (selectivity <12 %), it is also suitable for the purification of dye products from saline solutions. The excellent performance and the outstanding water stability render the COF-LZU1 membrane an interesting system for water purification.
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Katalyse
- Chemie (insg.)
- Allgemeine Chemie
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in: Angewandte Chemie - International Edition, Jahrgang 57, Nr. 15, 26.03.2018, S. 4083-4087.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - High-Flux Membranes Based on the Covalent Organic Framework COF-LZU1 for Selective Dye Separation by Nanofiltration
AU - Fan, Hongwei
AU - Gu, Jiahui
AU - Meng, Hong
AU - Knebel, Alexander
AU - Caro, Jürgen
N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (Program No. 51773012) and the Sino-German (CSC-DAAD) Postdoc Scholarship Program 2017 (57343410).
PY - 2018/3/26
Y1 - 2018/3/26
N2 - Covalent organic frameworks (COFs) are attractive candidates for advanced water-treatment membranes owing to their high porosity and well-organized channel structures. Herein, the continuous two-dimensional imine-linked COF-LZU1 membrane with a thickness of only 400 nm was prepared on alumina tubes by in situ solvothermal synthesis. The membrane shows excellent water permeance (ca. 760 L m−2 h−1 MPa−1) and favorable rejection rates exceeding 90 % for water-soluble dyes larger than 1.2 nm. The water permeance through the COF-LZU1 membrane is much higher than that of most membranes with similar rejection rates. Long-time operation demonstrates the outstanding stability of the COF-LZU1 membrane. As the membrane has no selectivity for hydrated salt ions (selectivity <12 %), it is also suitable for the purification of dye products from saline solutions. The excellent performance and the outstanding water stability render the COF-LZU1 membrane an interesting system for water purification.
AB - Covalent organic frameworks (COFs) are attractive candidates for advanced water-treatment membranes owing to their high porosity and well-organized channel structures. Herein, the continuous two-dimensional imine-linked COF-LZU1 membrane with a thickness of only 400 nm was prepared on alumina tubes by in situ solvothermal synthesis. The membrane shows excellent water permeance (ca. 760 L m−2 h−1 MPa−1) and favorable rejection rates exceeding 90 % for water-soluble dyes larger than 1.2 nm. The water permeance through the COF-LZU1 membrane is much higher than that of most membranes with similar rejection rates. Long-time operation demonstrates the outstanding stability of the COF-LZU1 membrane. As the membrane has no selectivity for hydrated salt ions (selectivity <12 %), it is also suitable for the purification of dye products from saline solutions. The excellent performance and the outstanding water stability render the COF-LZU1 membrane an interesting system for water purification.
KW - covalent organic frameworks
KW - dye removal
KW - molecular sieving membranes
KW - nanofiltration
KW - water purification
U2 - 10.1002/anie.201712816
DO - 10.1002/anie.201712816
M3 - Article
C2 - 29405529
AN - SCOPUS:85043377329
VL - 57
SP - 4083
EP - 4087
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 15
ER -