A Nano Needle-like Hydrophobic Co3O4@SSM for Heavy Oil Water Separation with High Efficiency

The needles-like Co3O4 with micro nano structure was synthesized by hydrothermal method and calcination. After being modified by octadecyl mercaptan, it shows an ultra-high separation efficiency of more than 99.9% for dichloromethane, 1,2-dichloroethane and trichloromethane oil/water mixtures. We believe this metal-based separation membrane will provide significant reference for further practical research. The Co3O4 with the needles-like micro nano structures is generated on stainless steel mesh by hydrothermal method and calcination, and then modified by octadecylmercaptan (ODT), which changed Co3O4 surface from hydrophilicity to high hydrophobicity. The Co3O4@SSM shows excellent heavy oil-water separetion efficiency to three different kinds (dichloromethane, 1,2-dichloroethane and trichloromethane) of heavy oil/water mixtures for 10 cycles.