Details
| Original language | English |
|---|---|
| Article number | 117361 |
| Journal | Journal of membrane science |
| Volume | 592 |
| Early online date | 8 Aug 2019 |
| Publication status | Published - 15 Dec 2019 |
Abstract
Oily wastewater from oil spill and industrial water discharge poses danger to human body and the environment. Fouling is the bottleneck of membrane for oily wastewater separation. Here, an ultra-thin 2D titanium carbide MXene membrane (about 30 nm) supported on porous polyethersulfone (PES) as substrate with high performance and excellent stability for oil-in-water emulsion separation is designed. The high antifouling resistance, promising oil/water separation and excellent recyclability of the MXene membranes are originated from their inherent hydrophilicity, low adhesion of oil droplets as well as the regular stacking of the 2D lamellar structure. Molecular Dynamics simulations further confirm that the hydrophilic MXene membranes with low oil adhensive force. Moreover, for salt-containing oily wastewater, the MXene membranes exhibit even higher oil rejection with low compromised water permeance due to the reduced d-spacing because of ion intercalation. Such ultra-thin MXene 2D membranes with outstanding recyclability and high separation performance pave an avenue for a broad oil/water separation.
Keywords
- Emulsions, Membrane, Separation, Sheet, Titanium carbide (MXene)
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
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In: Journal of membrane science, Vol. 592, 117361, 15.12.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultra-thin titanium carbide (MXene) sheet membranes for high-efficient oil/water emulsions separation
AU - Li, Zhong-Kun
AU - Liu, Yanchang
AU - Li, Libo
AU - Wei, Yanying
AU - Caro, Jürgen
AU - Wang, Haihui
N1 - Funding Information: This work was supported by the National Natural Science Foundation of China ( 21536005 , 21606086 and 21861132013 ), the Fundamental Research Funds for the Central Universities , and the Guangzhou Technology Project ( 201804010219 ).
PY - 2019/12/15
Y1 - 2019/12/15
N2 - Oily wastewater from oil spill and industrial water discharge poses danger to human body and the environment. Fouling is the bottleneck of membrane for oily wastewater separation. Here, an ultra-thin 2D titanium carbide MXene membrane (about 30 nm) supported on porous polyethersulfone (PES) as substrate with high performance and excellent stability for oil-in-water emulsion separation is designed. The high antifouling resistance, promising oil/water separation and excellent recyclability of the MXene membranes are originated from their inherent hydrophilicity, low adhesion of oil droplets as well as the regular stacking of the 2D lamellar structure. Molecular Dynamics simulations further confirm that the hydrophilic MXene membranes with low oil adhensive force. Moreover, for salt-containing oily wastewater, the MXene membranes exhibit even higher oil rejection with low compromised water permeance due to the reduced d-spacing because of ion intercalation. Such ultra-thin MXene 2D membranes with outstanding recyclability and high separation performance pave an avenue for a broad oil/water separation.
AB - Oily wastewater from oil spill and industrial water discharge poses danger to human body and the environment. Fouling is the bottleneck of membrane for oily wastewater separation. Here, an ultra-thin 2D titanium carbide MXene membrane (about 30 nm) supported on porous polyethersulfone (PES) as substrate with high performance and excellent stability for oil-in-water emulsion separation is designed. The high antifouling resistance, promising oil/water separation and excellent recyclability of the MXene membranes are originated from their inherent hydrophilicity, low adhesion of oil droplets as well as the regular stacking of the 2D lamellar structure. Molecular Dynamics simulations further confirm that the hydrophilic MXene membranes with low oil adhensive force. Moreover, for salt-containing oily wastewater, the MXene membranes exhibit even higher oil rejection with low compromised water permeance due to the reduced d-spacing because of ion intercalation. Such ultra-thin MXene 2D membranes with outstanding recyclability and high separation performance pave an avenue for a broad oil/water separation.
KW - Emulsions
KW - Membrane
KW - Separation
KW - Sheet
KW - Titanium carbide (MXene)
UR - http://www.scopus.com/inward/record.url?scp=85070705011&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2019.117361
DO - 10.1016/j.memsci.2019.117361
M3 - Article
AN - SCOPUS:85070705011
VL - 592
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
M1 - 117361
ER -