Supporting Information
Stable superhydrophobic coatings from the thiol-ligand
nanocrystals and their application in oil/water separation
Jing Li,a Lei Shi,a Yu Chen,a Yabin Zhang,a,b Zhiguang Guo,*a,b
a
Bao-lian Su,c and Weimin Liua
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of
Sciences, Lanzhou 730000, People’s Republic of China, bMinistry of Education Key Laboratory for the
Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062,
People’s Republic of China, and cLaboratory of Inorganic Materials Chemistry, University of Namur,
Namur B-5000, Belgium
*Address correspondence to zguo@licp.cas.cn.
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Table S1. pKsp value of different sulfides from Lange’s Handbook of Chemistry.
pKsp
FeS
CoS
NiS
CuS
Cu2S
Ag2S
17.2
24.7
25.7
35.2
47.6
49.2
Figure S1. SEM images of the textiles coated with different nanocrystals, (a) FeO, (b, c) Fe2O3, (d) CoO,
(e) NiO, (f) CuO from clean aqueous suspension, (g) CuO directly obtained from ethanol suspension, (h,
i) Ag.
2
Figure S2. Water droplet standing on the textiles coated with CuO (a, c) before and (b, d) after octadecyl
thiol modification. (a, b) nanocoatings from clean CuO aqueous suspensions, (c, d) nanocoatings
directly from CuO nanoparticles suspensions in ethanol.
Figure S3. Oil droplet such as hexadecane standing on the textiles coated with CuO after octadecyl thiol
modification.
Figure S4. Water droplet standing on the textile coated with Fe3O4.
3
0.30
Fe3O4
M (emu/g)
0.15
0.00
-0.15
-0.30
-10000
-5000
0
H (Oe)
5000
10000
Figure S5. The magnetic hysteresis loop of as-prepared Fe3O4.
Figure S6. A photo showing that the textile coated with Fe3O4 is magnetic when a magnet is close to it.
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Co 2p3/2 780.8
Co 2p1/2 796.5
775
780
785
790
795
800
805
810
Binding Energy (eV)
Figure S7. XPS spectrum of as-prepared textiles coated with CoO.
856.0
Ni 2p3/2
873.4
861.4
Ni 2p1/2
879.4
855
860
865
870
875
880
Binding Energy (eV)
Figure S8 XPS spectrum of as-prepared textiles coated with NiO.
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Cu 2p3/2 932.3
Cu 2p1/2 952.1
930
935
940
945
950
955
Binding Energy (eV)
Figure S9. XPS spectrum of as-prepared textiles coated with CuO.
Ag 3d5/2 367.8
Ag 3d3/2 373.8
366
368
370
372
374
376
Binding Energy (eV)
Figure S10. XPS spectrum of as-prepared textiles coated with Ag.
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Figure S11. Water droplet standing on the textiles coated with TiO2.
Figure S12. Water droplet at different temperatures standing on the textiles.
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Figure S13. (a) As-prepared superhydrophobic textiles on water surface. (b) Superhydrophobic textiles
in 0.4% SDBS aqueous solution. (c) Superhydrophobic textiles in hexane.
Figure S14. The effect of 0.04% SDBS aqueous washing on the wettability of as-prepared textiles.
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Figure S15. The effect of 0.4% SDBS aqueous washing on the wettability of as-prepared textiles.
Figure S16. The effect of 0.4% CTAB aqueous washing on the wettability of as-prepared textiles.
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Figure S17. The effect of ultrasonic treatment in nonpolar solvents on the wettability of as-prepared
textiles.
180
CA (Deg)
160
140
120
100
0
1
2
3
4
5
6
7
8
9
10 11
Repeated time
Figure S18. The contact angle of water on the superhydrophobic textiles after each oil-water separation.
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Figure S19. Schematic illustration of surface perfluorination on the textiles.
Figure S20. Water (blue colored by methylene blue) and oil droplet standing on the textiles after surface
perfluorination.
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