A Simple Way to Achieve Self-Cleaning Surfaces with Unique Antifouling Property

Table 4

Surface elemental compositions and functional groups of S1 after fluorination (FS1).

Element	Functional group	Binding energy (eV)	Atomic (%)
C1s	C—H	284.8	20.31
	C=O, C—F	287.8	2.29
	C—CO3, CF2	290.8	7.96
	CF3	292.7	2.24
O1s	Cr2O3, CrO3, Fe2O3, Fe3O4, FeOOH	530.2	15.48
	OH	531.8	10.31
N1s	N2, NH3	400.0	0.62
Fe2p	Metallic Fe	719.9	0.60
	Fe^3+	710.5	3.48
	FeOOH	711.5	4.04
Cr2p	Cr2O3	576.7	2.14
F1s	CF2	688.9	26.94
Si2p	Si—O	100.2	3.21