A harsh environment resistant robust Co(OH)@stearic acid nanocellulose-based membrane for oil-water separation and wastewater purification.

Traditional membranes are inefficient in treating highly toxic organic pollutants and oily wastewater in harsh environments, which is difficult to meet the growing demand for green development. Herein, the Co(OH)@stearic acid nanocellulose-based membrane was prepared by depositing Co(OH) on the nanocellulose-based membrane (NBM) through chemical soaking method, which enables efficient oil/water mixtures separation and degradation of pollutants by photocatalysis in harsh environments. The Co(OH)@stearic acid nanocellulose-based membrane (Co(OH)@stearic acid NBM) shows good photocatalytic degradation performance for methylene blue pollutants in harsh environment, and has significant degradation rate (93.