Preparation method of graphene cigarette smoke filter screen and obtained filter screen

Abstract

The invention provides a graphene cigarette smoke filter screen which takes honeycomb-shaped polypropylene as a base material, and graphene oxide, activated carbon and a nickel metal organic frameworkcomposite material are loaded on the base material. When smoke of the cigarette passes through the filter screen, the activated carbon can adsorb harmful gas; the porous graphene and the nickel metalorganic framework material with the large specific surface area can also adsorb a large amount of harmful gas, tar and heavy metal, and the nickel metal organic framework material can also decomposeharmful substances in the nickel metal organic framework material through catalysis. On one hand, the filtering efficiency is improved, and on the other hand, the service life is prolonged. The graphene cigarette smoke filter screen provided by the invention has the advantages that through the physical adsorption and chemical catalytic decomposition effects, the content of harmful substances in cigarette smoke can be effectively reduced, the content of tar is reduced by 85%, the content of benzopyrene is reduced by 45.45%, the content of lead is reduced by 74.1%, the content of arsenic is reduced by 50%, and the content of cadmium is reduced by 50%.

Description

technical field [0001] The invention belongs to the technical field of harm reduction and tar reduction of cigarette filters, and in particular relates to a method for preparing a graphene cigarette smoke filter and the obtained filter. Background technique [0002] There are more than 4,000 substances produced by burning tobacco in the smoke produced by cigarettes, most of which are harmful. The main harmful components of cigarettes are tar, heavy metals, benzopyrene, etc. Tar is a cause of lung cancer, bronchitis and other diseases, destroying people's health and even life. Some domestic scholars have conducted related research and found that in the smoke of a cigarette, the most easily absorbed heavy metal is cadmium, followed by lead. About 46.4% of cadmium and 26.4% of lead in a cigarette will enter the lungs. Harmful to human health. [0003] In order to reduce harmful substances in cigarette smoke, the prior art has provided filters in the design of cigarettes. Ex...

AI Technical Summary

Problems solved by technology

Existing cigarette filters are made of fiber layers rolled into columns as filters. In order to improve the filtering effect, there is also a method of adding activated carbon to the filter. However, the filtering effect is limited and the adsorption effect on harmful gases is not ideal.

In the prior art, there is also a method of using diatomite to adsorb harmful gases in cigarettes, but such materials, on the one hand, have an unsatisfactory adsorption effect, and on the other hand, have a certain impact on the taste of cigarettes.

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