Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is © The Royal Society of Chemistry 2015
Electronic Supplementary Information (ESI)
Superhydrophobic and superoleophilic graphene aerogel prepared by facile chemical reduction Liming Xu, Guyu Xiao*, Caibao Chen, Run Li, Yiyong Mai, Guoming Sun and Deyue Yan School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China
Fig. S1 Video snapshots of the absorption process of a drop of hexadecane on the surface of GA 0s
0.04 s
0.12 s
0.16 s
0.08 s
Fig. S2 Optical image of GA immersed in water by an external force.
* Corresponding author. Tel: +86 21 54742664, E-mail address:
[email protected] (G. Xiao)
1
intensity (a.u.)
Fig. S3 Raman spectra of GO (a) and GA (b).
(b)
(a)
1000
1200
1400
1600
1800
Raman shift (cm ) -1
2000
2200
Fig. S4 Absorption Capacity as a function of the density of solvents.
Absorption Capacity (g/g)
(Order of the solvents according to the density: hexane, dodecane, cyclohexane, acetone, ethanol, methanol, kerosene, paraffin oil, toluene, pump oil, THF, dioxane, chloroform, CCl4)
240
200
160
120
0.6
0.8
1.0
1.2
1.4
Density of solvents (g/mL)
1.6
2
Fig. S5 FT-IR spectra of three kinds of the recovered solvents from GA: a) acetone, b) dodecane, c) hexane.
Intensity (a.u.)
(a)
(b)
(c)
4000
3000
2000
Wave number (cm-1)
1000
3
