Abstract: MoS2 nanosheets were prepared from MoS2 powders through ultrasonic liquid exfoliation method. Hydrophobic polyurethane ( PU ) sponges for oil absorption were fabricated by subsequent modification with MoS2 nanosheets and polydimethylsiloxane ( PDMS ) . The contact angle and oil absorbent properties of the obtained sponges were measured. The results indicate that PU-MoS2 sponge shows good hydrophobicity and oil absorption capacity. PU-MoS2 sponge has absorbent capacities of 12-86 times of their own weight for different organic solvent. The PU-MoS2 sponge obtained by coating with smaller size MoS2 nanosheets has relatively higher absorption capacity. Moreover, the absorption capacity of the PU-MoS2 sponge did not deteriorate after it was reused for 20 times, so the PU-MoS2 sponge has excellent recyclability for future application.

Key words: MoS2 nanosheets were prepared from MoS2 powders through ultrasonic liquid exfoliation method. Hydrophobic polyurethane ( PU ) sponges for oil absorption were fabricated by subsequent modification with MoS2 nanosheets and polydimethylsiloxane ( PDMS ) . The contact angle and oil absorbent properties of the obtained sponges were measured. The results indicate that PU-MoS2 sponge shows good hydrophobicity and oil absorption capacity. PU-MoS2 sponge has absorbent capacities of 12-86 times of their own weight for different organic solvent. The PU-MoS2 sponge obtained by coating with smaller size MoS2 nanosheets has relatively higher absorption capacity. Moreover, the absorption capacity of the PU-MoS2 sponge did not deteriorate after it was reused for 20 times, so the PU-MoS2 sponge has excellent recyclability for future application.