Superhydrophobic porous foams constructed based on the high internal phase emulsion template method
The discharge of industrial oily wastewater and the occurrence of marine oil spills have led to serious damage to the aquatic environment.In order to achieve efficient and cost-effective oil/water separation,a superhydrophobic porous foam was successfully fabricated in this study applying the high internal phase emulsion template method.The physical and chemical structures of the materials were characterized by SEM,MIP,FTIR and XPS,and the wettability of the materials was also tested.These materials exhibited superhydrophobic-super oleophilic properties,evidenced by a high water contact angle of 146.8°,an impressively low water rolling angle of merely 6 and an almost negligible oil contact angle.The hydrophobicity of the material can be easily tailored by adjusting the monomer ratios.Remarkably,this material demonstrated exceptional oil-absorption capabilities with oil-absorption rates ranging from 30.17g/g to 76.65g/g across various oils and organic reagents.Furthermore,the material addressed surface oil spills and underwater heavy oil release,maintaining a consistent oil recovery efficiency of 90％throughout 10 cycles.Further research was conducted on the adsorption process of the material on oil products,and the results showed a closer adherence to the pseudo-first-order adsorption kinetic model(R2＞0.99)for diesel and ethanol.Consequently,the material presented as a superhydrophobic-super oleophilic porous substance,exhibiting elevated oil adsorption ratio,remarkable oil recovery efficiency and commendable reusability.Its potential applications in the realm of oil-water separation were abundant.
high internal phase emulsion template methodsuperhydrophobicporous materialoil recoveryoil/water separation
万方数据
维普
