Composite nanofiber filter material with photocatalytic function and preparation method thereof

Abstract

The invention relates to a composite nanofiber filter material with photocatalytic function and a preparation method thereof. The filter material consists of a support layer and a nanofiber filter layer attached to the surface of the support layer, and the nanofiber layer is uniformly filled with a photocatalyst. The preparation method comprises the steps of: 1) preparation of a spinning solution:dispersing a certain amount of photocatalyst evenly in a solvent to form a dispersion, conducting ultrasonic treatment, then adding a high polymer to form a stable and homogeneous electrostatic spinning solution; 2) electrospinning: setting electrospinning parameters, using a combined needle for electrospinning to achieve silk stretching of a spinning polymer solution at a solid metal wire tip; and 3) use of recovered solvent vapor for slight dissolving treatment on the composite nanofiber filter material surface at certain release rate, thus obtaining the composite nanofiber filter materialwith photocatalytic function finally. The composite nanofiber filter material with photocatalytic function provided by the invention effectively solves the easy blocking problem of existing electrospinning needle/nozzle liquid discharge ends, has good photocatalytic efficiency on formaldehyde, amine, toluene and the like, and also has excellent filtration performance, thus having broad applicationprospects.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This patented technology uses an integrated combination of two different types of nozzles or needles: one used for electric field force (EFL) pulling fibers towards another object called target, such as paper, plastic sheet, etc., and the second type that helps create tiny holes on it through evaporation process. These techniques help prevent blockages from happening during production processes without causing damage to equipment. Additionally, this new method allows for more efficient use of resources than traditional methods like water jet cleaning.

Problems solved by technology

This patented technical problem addressed in this patent relates to finding ways to efficiently remove small amounts of gaseous substances like formalin that are released during construction projects without causing damage to surrounding areas due to their negative effects on human health. Current methods involve filters made up mostly of glass fibers which may become clogged over time leading to increased cleaning costs for maintenance workers. Therefore there needs a new type of catalyst called TiO_{n/nanosiloxane that works well even at low concentrations while still maintains good physical properties.}

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