Supporting Information
Bio-inspired robust superhydrophobic-superoleophilic
polyphenylene sulfide membrane for efficient oil/water
separation under highly acidic or alkaline conditions
Tingting Fan, Jinlei Miao, Zhenhuan Li*, Bowen Cheng*
State Key Laboratory of Separation Membranes and Membrane Processes, School of
Materials Science and Engineering, Tianjin Polytechnic University, 300160 Tianjin,
China.
* Corresponding author: [email protected]; [email protected]
Fig. S1. Schematic diagram of PPS membrane preparation device.
Fig. S2. Schematic diagram of the emulsion separation experiments.
Fig. S3. EDX mapping of the bottom surface of different membranes (M-1, M-2, M-3, M-4, M-5)
Fig.
S4. EDX mapping of the cross-section of the membrane M-4. The values of the embedded image are the elemental percentages (at%).
Fig. S5. CSM images of PPS-SiO2 hybrid membranes and the roughness (Ra) value is shown under
each image.
Fig. S6.
Separation performance of the M-4 membrane for the petroleum hydrocarbons/water emulsions.
Fig. S7. Recycling performance of the M-4 membrane for the water-in-chloroform emulsion
under strong acid environment (a: pH=1, b: pH=14).
Fig. S8. Recycling performance of the M-4 membrane for the water-in-kerosene emulsion
under strong alkali environment (a: pH=1, b: pH=14).
Fig. S9. Recycling performance of the M-4 membrane for the water-in-toluene emulsion
under strong alkali environment (a: pH=1, b: pH=14).
Table S1. Water and oil contact angles, water rejection rates in this study compared to other membranes in oil/water separation.
Membrane
code
Water contact
angle (°)
Oil contact
angle (°)
Water rejection rate
(%)Ref.
PS-g-CNTs membrane
152° 0° 99.94 [56]
SiO2-carbon composed membrane
144. 2° 0° -- [57]
NWF-PVDF Membrane
156° -- 99.96 [58]
TPU-PNIPAM membrane
150.2° -- 99.26 [59]
PPS-SiO2 membrane
(M-4)
156.9° 0° 99.97 This work
