4. Conclusions Superhydrophobic and superoleophilic cotton was fabricated.The PDMS-coated cotton had an oil absorption capacity of up 7080 wt.%, oil selectivity of >99.15% after 500 cycles, good recyclability, and robust mechanical stability. The loading capacity of the PDMS-coated cotton was directly related to its oil absorption capacity. These findings will assist with the development and application of porous materials in oil/water separation.