| abstract |
The invention belongs to the field of environmental materials, and particularly relates to a patterned porous nanofiber material with dual functions of oil-water separation and oil pollution resistance, a preparation method and application thereof. The hydrophobic spinning nanofibers which are staggered with each other are used as a skeleton to form an ordered micro-nano-scale patterned structure; the patterned structure improves the open three-dimensional porous structure of the fiber material, and improves the oil-water separation flux of the fiber material; Combined with dopamine and photocatalyst, it increases the type of oily wastewater treated and resists oil pollution during the separation process. The preparation method comprises the following steps: dissolving the material forming the spun fiber in an organic solvent, electrospinning, immersing in the dopamine solution to protect from light, and then immersing in the photocatalyst suspension aqueous solution to support the photocatalyst. The material has good hydrophilicity and lipophilicity, and selectively passes oil or water according to the type of oil-water mixture, and maintains high separation efficiency and separation flux, and can photocatalyticly degrade organic matter and resist oil pollution, and can be repeatedly recycled. |