Fig. 8
Optical picture of the membrane after oil/water separation and self-cleaning (a) and the optical pictures of this membrane irradiated under UV-light for 10 min (b), 20 min (c), and 30 min (d). e Degradation efficiency of methyl red solution without photocatalyst under irradiation of UV-light. Inset is the optical photo of methyl red solution irradiated at different times