Efficient and stable magnetic nanofiber membrane as well as preparation method and application thereof

Abstract

The invention discloses an efficient and stable magnetic nanofiber membrane and a preparation method and application thereof, and belongs to the technical field of composites.The preparation method comprises the following steps that polyacrylonitrile or polystyrene, zero-valent nano-iron particles and n-octyl trimethyl ammonium bromide are dissolved in N, N-dimethylformamide and mixed to be uniform, a spinning solution is obtained, and a magnetic nanofiber membrane is obtained; the efficient and stable magnetic nanofiber membrane is prepared by the following steps of: performing electrostatic spinning, and performing vacuum drying treatment on a fiber membrane obtained after the electrostatic spinning is finished, and has the characteristics of high specific surface area, high porosity, high mechanical strength and high magnetism; the synergistic effect of the zero-valent nano-iron and the organic high polymer material carrier is effectively exerted, the problems that the surface of the catalyst is easy to oxidize and particles are easy to agglomerate are solved, the catalytic activity of the magnetic nanofiber membrane is enhanced, and the efficiency of an organic wastewater treatment process is improved.

Description

A kind of high-efficiency and stable magnetic nanofiber membrane, preparation method and application thereof technical field The present invention relates to composite material technical field, particularly relate to a kind of high-efficiency stable magnetic nanofiber membrane, preparation method and its application. Background technique [0002] With the rapid advancement of industrialization and modernization, the water environment pollution that people face is becoming more and more serious. The protection and restoration of water bodies is imminent. Among them, the treatment of industrial wastewater has become increasingly important. in, Industrial organic wastewater refers to a type of industrial wastewater containing carbohydrates, proteins, lipids and other components, mainly from chemical Industrial production such as labor and pharmaceuticals. Direct discharge of organic sewage will cause great damage to the ecological environment and seriously threaten loc...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a highly efficient and stable magnetic nanofiber membrane, a preparation method and its application to efficiently degrade organic pollutants in a weak magnetic field, so as to solve the problem of complicated steps and low magnetic strength in the existing preparation of magnetic nanofiber membrane catalysts. difficult to recycle

The magnetic nanofiber membrane prepared by the present invention has the characteristics of high specific surface area, high porosity, high mechanical strength, and high magnetism, effectively exerts the synergistic effect of zero-valent nano-iron and organic high polymer material carrier, and solves the problem that the surface of the catalyst is easy to oxidize And the problem of easy agglomeration of particles, enhance the catalytic activity of magnetic nanofiber membrane, and improve the efficiency of organic wastewater treatment process

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