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Graphene adsorption material, preparation method and application thereof and cigarette filter

An adsorption material, graphene technology, applied in the field of adsorption, can solve the problems of reducing the content of benzopyrene, the preparation process is cumbersome, the adsorption effect of benzopyrene needs to be improved, etc., and achieves the effects of reducing smoking hazards and preventing mildew

Active Publication Date: 2016-10-12
JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned application makes the obtained filter fiber into a cigarette filter, which can reduce the content of benzopyrene in the smoke, but on the one hand, this application involves other additives such as chitosan and the preparation process is cumbersome; The adsorption effect of pyrene still needs to be improved

Method used

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  • Graphene adsorption material, preparation method and application thereof and cigarette filter
  • Graphene adsorption material, preparation method and application thereof and cigarette filter
  • Graphene adsorption material, preparation method and application thereof and cigarette filter

Examples

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preparation example Construction

[0042] The fiber that adopts the preparation method in the prior art to make is illustrated as follows:

[0043] Taking the preparation of viscose fiber as an example, the viscose liquid used in the present invention is a well-known viscose liquid in the prior art. , aging, filtration, defoaming and other processes. The pulp is impregnated with an aqueous sodium hydroxide solution with a concentration of about 18%, so that the cellulose is converted into alkali cellulose, the hemicellulose is dissolved, and the degree of polymerization is partially reduced; then the excess alkali is removed by pressing. The blocky alkali cellulose becomes loose flocs after crushing on the pulverizer, and the uniformity of subsequent chemical reactions is improved due to the increase in surface area. Oxidative cracking of alkali cellulose under the action of oxygen reduces the average degree of polymerization. This process is called aging. After aging, the reaction of alkali cellulose and car...

preparation example 1

[0143] (1) Under the action of ferrous chloride, the corn cob cellulose is subjected to catalytic treatment to obtain a precursor;

[0144] (2) under the condition of nitrogen, the precursor is kept at 150° C. for 2 hours to obtain the first intermediate;

[0145] (3) under the condition of nitrogen, the temperature of the first intermediate is raised to 400° C. for 3.5 hours to obtain the second intermediate;

[0146] (4) under the condition of nitrogen, the temperature of the second intermediate is raised to 1200° C. for 3 hours to obtain the third intermediate;

[0147] (5) After the third intermediate is acid-washed with 10wt% sodium hydroxide solution, 4wt% hydrochloric acid and washed with water, the biomass graphene is obtained;

[0148] The heating rate in the steps (3) and (4) is 15° C. / min˜16° C. / min.

[0149] Detected by XRD, in the biomass graphene prepared in Preparation Example 1 of the present invention, the content of mineral elements is 4wt% of the biomass g...

preparation example 2

[0151] Prepare biomass graphene by the method identical with preparation example 1, difference is: the catalyst used in step (1) is the mixture (mass ratio is 3:1) of ferric chloride and nickel nitrate, and biomass carbon source is Corn cob cellulose bleached with hydrogen peroxide; the protective gas used in steps (2)-(4) is argon, the precursor is kept at 140°C for 2.5h, the temperature of the first intermediate is raised to 250°C for 4h, and the second intermediate The temperature of the body was raised to 1100° C. for 2 h; the alkali used in step (5) was 5 wt % NaOH aqueous solution, and the acid used was 3 wt % hydrochloric acid aqueous solution.

[0152] After testing, in the biomass graphene prepared in Preparation Example 2 of the present invention, the content of mineral elements is 2wt% of the biomass graphene; and, the mineral elements in the biomass graphene mainly include Si, Al, Fe elements.

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Abstract

The invention provides a graphene adsorption material, and a preparation method and application thereof. The graphene adsorption material is prepared from a fiber carrier, graphene and doping elements, wherein the graphene and the doping elements are loaded on the fiber carrier; the doping elements are prepared from one or multiple of Al, Si and Fe. The invention also provides a cigarette filter. The cigarette filter comprises a fiber section formed by the graphene adsorption material. According to the graphene adsorption material, the preparation method and the application thereof, and the cigarette filter, provided by the invention, through introduction of the graphene and the doping elements in the fiber carrier, polycyclic aromatic hydrocarbons harmful substances such as benzopyrene in smoke can be specifically adsorbed, filtered out and removed; meanwhile, nicotine and other innocuous substances are reserved, and the smoking of the smoke cannot be influenced. According to the cigarette filter provided by the invention, polycyclic aromatic hydrocarbons cancerogenic substances such as the benzopyrene in the smoke can be effectively adsorbed, and the harmfulness of smoking can be reduced; meanwhile, the smoking pleasure and the mellow smoking of the smoke cannot be influenced. In addition, the graphene adsorption material provided by the invention can also be used for preventing the phenomenon of mildewing of the cigarette filter due to factors of a damp environment and the like.

Description

technical field [0001] The invention relates to the technical field of adsorption, in particular to a graphene adsorption material, a preparation method and application thereof, and a cigarette filter. Background technique [0002] During the burning of cigarettes, harmful components such as CO, phenol and benzopyrene are produced, which enter the human body with the smoke and cause harm. The filter tip refers to the upper part of the cigarette, which is the bridge between the mainstream smoke of the cigarette and the human body. It is mainly used to filter out some harmful substances such as tar in the inhaled smoke, which can reduce the harm of smoking to the human body. In order to achieve the required functions, cigarette filters have gradually developed from ordinary single acetate filters to multi-filters and filters made of various materials. [0003] The prior art discloses a variety of cigarette filters. For example, the Chinese patent document CN 2872872Y disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02A24D3/16
Inventor 唐一林张金柱张安刘顶
Owner JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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