Composite nanometer photocatalyst electrospun fiber filtering material and preparation method thereof

Abstract

The invention discloses a composite nanometer photocatalyst electrospun fiber filtering material and a preparation method thereof, and relates to a fiber filtering material. The composite nanometer photocatalyst electrospun fiber filtering material is provided with a carrier, and the carrier is coated with a layer of photocatalyst fibers. The preparation method comprises the following steps: 1) mixing polyacrylonitrile and dimethylacetamide, and heating the mixture to obtain a polymer solution; 2) mixing the polymer solution prepared in the step 1) with a titanium dioxide solution, and heating the mixture to obtain a photocatalyst composition solution; 3) placing the photocatalyst composition solution prepared in the step 2) into an injector of an automatic sample introduction device, and jetting titanium-containing photocatalyst fibers through an electrostatic spinning device; 4) placing poly-p-phthalic acid fibers on a collector, directly electrically-spinning the photocatalyst composition solution on the poly-p-phthalic acid fibers, overlapping a layer of poly-p-phthalic acid fibers to form a sandwich structure, and performing hot pressing to obtain the composite nanometer photocatalyst electrospun fiber filtering material. The composite nanometer photocatalyst electrospun fiber filtering material has contribution to enhancement of the particle filtering effect and improvement on the treatment performance of volatile organic matters.

Description

technical field [0001] The invention relates to a fiber filter material, in particular to a composite nano photocatalyst electrospun fiber filter material capable of simultaneously treating volatile organic matter and particulate matter and a preparation method thereof. Background technique [0002] Current epidemiological studies have pointed out that air pollution is positively correlated with chronic diseases such as respiratory, cardiovascular disease, and lung cancer. Nanoparticles can directly enter the alveoli and be swallowed by macrophages. They can stay in the alveoli forever, not just for the respiratory system. And it will have an impact on the cardiovascular system and the nervous system. If the particles enter the blood through the bronchi and alveoli, the harmful gases and heavy metals in them will dissolve in the blood, which will cause greater harm to human health. In terms of health hazards, volatile organic compounds (VOCs) can easily cause slight damage ...

AI Technical Summary

Problems solved by technology

The fiber size and pore size diameter of traditional fiber filter materials (such as glass fiber, melt blown fiber and spunbond fiber) are too large, and the bulk density is difficult to control

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