In order to effectively treat oily wastewater and meet environmental requirements,a one pot hydrothermal method was used to prepare superhydrophobic superoleophilic PVA sponge material(STt@PVA).It can instantly absorb low viscosity organic solvents such as chloroform,n-hexadecane,and gasoline,and the adsorption time of high viscosity edible oil is about 20 seconds.The separation efficiency of n-hexadecane,gasoline,and chloroform is 98%,93%,and 86%,respectively.After 5 cycles,the adsorption efficiency of n-hexadecane and chloroform water mixture was above 83%,indicating that STt@PVA has excellent oil-water separation performance and recyclability.
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