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Graphene adsorption material, preparing method and application thereof and cigarette filter tip

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: 2018-01-05
JINAN SHENGQUAN GROUP SHARE HLDG
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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, preparing method and application thereof and cigarette filter tip
  • Graphene adsorption material, preparing method and application thereof and cigarette filter tip
  • Graphene adsorption material, preparing method and application thereof and cigarette filter tip

Examples

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preparation example Construction

[0043] The fiber that adopts the preparation method in the prior art to make is illustrated as follows:

[0044]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, alkali cellulose is reacted with carbon d...

preparation example 1

[0143] (1) under the action of ferrous chloride, the corncob cellulose is catalytically treated to obtain a precursor;

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

[0145] (3) under the condition of nitrogen, the first intermediate is heated to 400°C and kept for 3.5 h to obtain the second intermediate;

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

[0147] (5) after the third intermediate is subjected to 10wt% sodium hydroxide solution, 4wt% hydrochloric acid pickling, and water washing, 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 obtained in Preparation Example 1 of the present invention, the content of mineral elements is 4wt% of the biomass graphene; and the mineral elements in the biomass graphene mainly...

preparation example 2

[0151] Biomass graphene is prepared by the same method as in Preparation Example 1, except that the catalyst used in step (1) is a mixture of ferric chloride and nickel nitrate (mass ratio is 3:1), and the biomass carbon source is The corncob 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 first intermediate is heated to 250°C and kept for 4h, the second intermediate The temperature was raised to 1100° C. for 2 hours; the base used in step (5) was 5wt% NaOH aqueous solution, and the used acid was 3wt% hydrochloric acid aqueous solution.

[0152] After testing, in the biomass graphene obtained 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 preparing method and application thereof. The adsorption material includes fiber carriers and graphene and doping elements loaded on the fiber carriers. The doping elements include one or more Al, Si and Fe. The invention further provides a cigarette filter tip which comprises a fiber section prepared from the graphene adsorption material. By introducing the graphene and doping materials in the fiber carriers, polycyclic aromatic hydrocarbon type harmful substances such as benzopyrene in smoke can be adsorbed and filtered away specifically, and meanwhile nicotine and other harmless substances are kept and the smoking flavor of smoke is not affected. By means of the cigarette filter tip, polycyclic aromatic hydrocarbon type cancerogenic substances such as benzopyrene in smoke can be adsorbed effectively, and the smoking harmfulness is reduced; meanwhile, the pleasant sensation of smoking and mellow smoking flavor of smoke are not affected. In addition, by means of the graphene adsorption material, the mildew phenomena of the cigarette tip caused by environment moisture and other factors can be avoided.

Description

[0001] The application of the present invention is a divisional application with an application number of 2016105912116, an application date of July 25, 2016, and the title of the invention as "a graphene adsorption material, its preparation method and its application, and a cigarette filter". technical field [0002] 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 [0003] During the combustion of cigarettes, harmful components such as CO, phenol and benzopyrene are produced, which can enter the human body with the smoke when smoking, causing 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. In order to achieve the required functions, cigarette filters have gradually developed from ordinary single acetate filters to multiple f...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02A24D3/16
Inventor 唐一林张金柱张安刘顶
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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