Developing a facile graphitic carbon nitride (g-CN)-coated stainless steel mesh with different superhydrophilic/underwater superoleophobic and superoleophilic behavior for oil-water separation.

There is an increasing demand for the development of inexpensive and effective approaches for the oil-water separation due to the global concern in oil industries. The present study was conducted to fabricate graphitic carbon nitride/thermoplastic polyurethane (g-CN/TPU)-coated stainless steel meshes via the dip-coating method to investigate the capability of g-CN nanosheets (CN-NS) in oil-water separation. CN-NS was synthesized using the polycondensation process followed by exfoliation with Hummer's method.