Details
| Original language | English |
|---|---|
| Article number | 127806 |
| Journal | Chemical Engineering Journal |
| Volume | 408 |
| Early online date | 29 Nov 2020 |
| Publication status | Published - 15 Mar 2021 |
Abstract
Two-dimensional (2D) lamellar membranes show great application potential and are usually prepared by traditional vacuum filtration (VF), which is time-consuming and not easy to scale-up. Herein, 2D MXene membranes with a large area of up to 575 cm2 are prepared by facile electrophoretic deposition (EPD) within 10 min. The negatively charged MXene nanosheets tend to deposit on anode to assemble 2D stacking membranes. Moreover, large sheets are preferentially deposited because they move faster, which leads to highly ordered 2D structure with excellent ions rejection. The Na+ rejection of the EPD-membrane is ~99.5%, which is higher than that of the VF-membrane (~94.7%) with same thickness. Compared with VF, EPD-membrane area could be enlarged by two orders of magnitude while preparation time is shortened by one order of magnitude. Such EPD process can be extended to prepare other lamellar membranes, as a fast and economic route for scale-up of 2D membranes for different applications.
Keywords
- Ion rejection, Membrane separation, MXene, Two dimensional membranes
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Environmental Science(all)
- Environmental Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Chemical Engineering Journal, Vol. 408, 127806, 15.03.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Fast electrophoretic preparation of large-area two-dimensional titanium carbide membranes for ion sieving
AU - Deng, Junjie
AU - Lu, Zong
AU - Ding, Li
AU - Li, Zhong-Kun
AU - Wei, Yanying
AU - Caro, Jürgen
AU - Wang, Haihui
N1 - Funding Information: We gratefully acknowledge the funding of Natural Science Foundation of China ( 22022805 , 22078107 , 21861132013 ) and Guangdong Natural Science Funds for Distinguished Young Scholar ( 2017A030306002 ).
PY - 2021/3/15
Y1 - 2021/3/15
N2 - Two-dimensional (2D) lamellar membranes show great application potential and are usually prepared by traditional vacuum filtration (VF), which is time-consuming and not easy to scale-up. Herein, 2D MXene membranes with a large area of up to 575 cm2 are prepared by facile electrophoretic deposition (EPD) within 10 min. The negatively charged MXene nanosheets tend to deposit on anode to assemble 2D stacking membranes. Moreover, large sheets are preferentially deposited because they move faster, which leads to highly ordered 2D structure with excellent ions rejection. The Na+ rejection of the EPD-membrane is ~99.5%, which is higher than that of the VF-membrane (~94.7%) with same thickness. Compared with VF, EPD-membrane area could be enlarged by two orders of magnitude while preparation time is shortened by one order of magnitude. Such EPD process can be extended to prepare other lamellar membranes, as a fast and economic route for scale-up of 2D membranes for different applications.
AB - Two-dimensional (2D) lamellar membranes show great application potential and are usually prepared by traditional vacuum filtration (VF), which is time-consuming and not easy to scale-up. Herein, 2D MXene membranes with a large area of up to 575 cm2 are prepared by facile electrophoretic deposition (EPD) within 10 min. The negatively charged MXene nanosheets tend to deposit on anode to assemble 2D stacking membranes. Moreover, large sheets are preferentially deposited because they move faster, which leads to highly ordered 2D structure with excellent ions rejection. The Na+ rejection of the EPD-membrane is ~99.5%, which is higher than that of the VF-membrane (~94.7%) with same thickness. Compared with VF, EPD-membrane area could be enlarged by two orders of magnitude while preparation time is shortened by one order of magnitude. Such EPD process can be extended to prepare other lamellar membranes, as a fast and economic route for scale-up of 2D membranes for different applications.
KW - Ion rejection
KW - Membrane separation
KW - MXene
KW - Two dimensional membranes
UR - http://www.scopus.com/inward/record.url?scp=85098459588&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2020.127806
DO - 10.1016/j.cej.2020.127806
M3 - Article
AN - SCOPUS:85098459588
VL - 408
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 127806
ER -