TY - JOUR
T1 - Stainless-steel-net-supported superhydrophobic COF coating for oil/water separation
AU - Jiang, Yunzhe
AU - Liu, Chuanyao
AU - Li, Yanhong
AU - Huang, Aisheng
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - This work reports the preparation and post-synthetic modification of COF named BTADHBD with perfluorooctyltriethoxysilane (POTS) to obtain a superhydrophobic COF coating. Through post-synthetic modification, the water contact angle (CA) of BTADHBD is increased from 83.7° to 153.2° without change of crystals morphology and structure. BTADHBD COF coating was prepared on the stainless steel net (SSN) through repeated growth, followed by post-synthetic modification using (±)-glycidol (Glc) and POTS to obtain the SSN-supported superhydrophobic BTADHBD@Glc@POTS coating with a water CA of 152.1°. The superhydrophobic BTADHBD@Glc@POTS coating showed high water-resistance, self-cleaning property and oil/water separation performance using simply gravity as driving force. For various oil/water mixtures, the oil/water separation efficiency was always up to 99.5% with oil flux above 70 L/(m2·s). For 50 successive cycles of oil/water separation, the high oil/water separation efficiency (above 99.5%) remained unchanged, which is very promising for oil/water separation.
AB - This work reports the preparation and post-synthetic modification of COF named BTADHBD with perfluorooctyltriethoxysilane (POTS) to obtain a superhydrophobic COF coating. Through post-synthetic modification, the water contact angle (CA) of BTADHBD is increased from 83.7° to 153.2° without change of crystals morphology and structure. BTADHBD COF coating was prepared on the stainless steel net (SSN) through repeated growth, followed by post-synthetic modification using (±)-glycidol (Glc) and POTS to obtain the SSN-supported superhydrophobic BTADHBD@Glc@POTS coating with a water CA of 152.1°. The superhydrophobic BTADHBD@Glc@POTS coating showed high water-resistance, self-cleaning property and oil/water separation performance using simply gravity as driving force. For various oil/water mixtures, the oil/water separation efficiency was always up to 99.5% with oil flux above 70 L/(m2·s). For 50 successive cycles of oil/water separation, the high oil/water separation efficiency (above 99.5%) remained unchanged, which is very promising for oil/water separation.
KW - Covalent organic framework (COF)
KW - Oil/water separation
KW - Post-synthesis
KW - Superhydrophobic coating
UR - https://www.scopus.com/pages/publications/85067244586
U2 - 10.1016/j.memsci.2019.117177
DO - 10.1016/j.memsci.2019.117177
M3 - 文章
AN - SCOPUS:85067244586
SN - 0376-7388
VL - 587
JO - Journal of Membrane Science
JF - Journal of Membrane Science
M1 - 117177
ER -