Fig. 3(a) shows the removal of oils or organic solvents from a water surface, using P0.75C as an absorbent. Fig. 3(b) shows the maximum oil absorption capacity of raw and PDMS-coated cotton for oils and organic solvents. P0.75C absorbed a wide range of oil and organic solvents from their oil/water or solvent/water mixtures, thus demonstrating its excellent oil/water separation ability.The absorption capacity of P0.75C ranged from 2482 to 7080 wt.%,depending on the viscosity and density of oil or organic solvent.The absorption capacity of the raw cotton ranged from 2749 to 5248 wt.% for pure oils or solvents. The raw cotton exhibited a slightly higher oil capacity than that of the PDMS-coated cotton.However, the absorption capacity of raw cotton (5248 wt.%) is less than that of PDMS-coated cotton (6100 wt.%), which should be attributed to the good compatibility between the PDMS and highly viscous silicone oil.For practical oil cleanup applications, the recyclability of the PDMS-coated cotton and recovery of the oils or organic solvents were also evaluated (Fig. 4 and Video S1). Fig. 4 shows the oil absorption capacity and selectivity of P0.75C for light petroleum over 500 cycles. In a typical process, the oil absorption capacity was calculated as the average absorption capacity of the previous five cycles. The detailed process of a single point is shown in Video