TY - JOUR
T1 - Poly(ionic liquid)-Coated Meshes with Opposite Wettability for Continuous Oil/Water Separation
AU - Deng, Xi
AU - Zhang, Jingshun
AU - Zhang, Liren
AU - Cheng, Guiren
AU - Chen, Bihua
AU - Zhang, Yongya
AU - Gao, Guohua
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/4/8
Y1 - 2020/4/8
N2 - A series of oil/water separation membranes with tunable surface wettability based on poly(ionic liquid)s (PILs) were prepared via a facile one-step photopolymerization of N-vinylimidazolium ionic liquids and divinylbenzene on meshes. The wettability of PIL-based membranes (PILMs) was adjusted by the structures of PILs, specifically the alkyl chain length of imidazolium (butyl and octyl) and anion species (acrylic anion, Br-, and PF6 -). Tunability of wettability resulted in the hydrophilic or hydrophobic property of PILMs. The hydrophilic poly(1-vinyl-3-butylimidazolium acrylate)-based membrane (PILM-1) transported water and intercepted oil, while the hydrophobic poly(1-vinyl-3-octylimidazolium hexafluorophosphate)-based membrane (PILM-5) removed oil and rejected water. The two membranes with opposite wettability showed excellent oil/water separation efficiency (above 99%) in batch processes. Continuous oil/water separation was also achieved by assembling PILM-1 and PILM-5 on the fabricated devices. A T-type device could separate various oil/water mixtures continuously, and a tank-type device could separate dispersed oil/water mixtures, with a handling capacity of 46 L within 12 h.
AB - A series of oil/water separation membranes with tunable surface wettability based on poly(ionic liquid)s (PILs) were prepared via a facile one-step photopolymerization of N-vinylimidazolium ionic liquids and divinylbenzene on meshes. The wettability of PIL-based membranes (PILMs) was adjusted by the structures of PILs, specifically the alkyl chain length of imidazolium (butyl and octyl) and anion species (acrylic anion, Br-, and PF6 -). Tunability of wettability resulted in the hydrophilic or hydrophobic property of PILMs. The hydrophilic poly(1-vinyl-3-butylimidazolium acrylate)-based membrane (PILM-1) transported water and intercepted oil, while the hydrophobic poly(1-vinyl-3-octylimidazolium hexafluorophosphate)-based membrane (PILM-5) removed oil and rejected water. The two membranes with opposite wettability showed excellent oil/water separation efficiency (above 99%) in batch processes. Continuous oil/water separation was also achieved by assembling PILM-1 and PILM-5 on the fabricated devices. A T-type device could separate various oil/water mixtures continuously, and a tank-type device could separate dispersed oil/water mixtures, with a handling capacity of 46 L within 12 h.
UR - https://www.scopus.com/pages/publications/85084032625
U2 - 10.1021/acs.iecr.0c00554
DO - 10.1021/acs.iecr.0c00554
M3 - 文章
AN - SCOPUS:85084032625
SN - 0888-5885
VL - 59
SP - 6672
EP - 6680
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 14
ER -