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Preparation method and application of cigarette filter tip and graphene composite material

A composite material and filter technology, which is applied in the field of cigarette filter/graphene composite material and cigarette filter/graphene composite material preparation, can solve the problem of low recovery rate and achieve simple process, good environmental and economic benefits, and excellent The effect of conductivity

Inactive Publication Date: 2018-04-20
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the first step in the recycling of waste cigarette butts is the extraction and separation of recyclable substances, that is, the recovery of nicotine and solanesol contained in waste cigarette butts requires multiple filtrations. Although the process is simple, the recovery rate not high

Method used

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  • Preparation method and application of cigarette filter tip and graphene composite material
  • Preparation method and application of cigarette filter tip and graphene composite material
  • Preparation method and application of cigarette filter tip and graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Disperse 8 mg of graphene in 40 ml of ethanol and ultrasonically disperse for 30 min. According to the mass-volume ratio of the cigarette filter tip and the dispersion liquid being 0.01g / ml, soak the waste cigarette filter tip in the ethanol dispersion liquid of graphene for 20s, then remove it and place it on a petri dish for 3min. Subsequent immersion in the dispersion was repeated 10 times. Dry the soaked cigarette filter in an oven at a temperature of 70° C. for 2 hours. The dried cigarette filter was placed in a crucible and carbonized in a tube furnace. Firstly, nitrogen gas is introduced with a flow rate of 40 sccm. The temperature of the furnace is raised to 800°C-820°C and then kept for 180 minutes at a heating rate of 10-20°C / min. After the furnace cools down to room temperature, the nitrogen gas is turned off. Obtained cigarette filter tip / graphene composite SEM picture such as figure 1 As shown, the porous structure of the composite material can be clearl...

Embodiment 2

[0034] Disperse 20mg of graphene in 40ml of ethanol and ultrasonically disperse for 30min. According to the mass-volume ratio of the cigarette filter to the dispersion liquid of 0.15 g / ml, soak the waste cigarette filter in the ethanol dispersion of graphene for 60 seconds, then remove it and place it on a petri dish for 3 minutes. Subsequent immersion in ethanol dispersion, this process was repeated 15 times. Dry the soaked cigarette filter in an oven at a temperature of 100° C. for 1 hour. The dried cigarette filter was placed in a crucible and carbonized in a tube furnace. Firstly, nitrogen gas is introduced with a flow rate of 70 sccm. The temperature of the furnace is raised to 840°C-860°C and then kept for 160 minutes at a heating rate of 10-20°C / min. After the furnace cools down to room temperature, the nitrogen gas is turned off. Get the cigarette filter / graphene composite material SEM picture such as figure 2 As shown, it can be clearly seen that there is graphene...

Embodiment 3

[0036] Disperse 40mg of graphene in 40ml of ethanol and ultrasonically disperse for 30min. According to the mass volume ratio of the cigarette filter tip and the dispersion liquid being 0.05g / ml, soak the waste cigarette filter tip in the ethanol dispersion liquid of graphene for 30s, then remove it and place it on a petri dish for 2min. Subsequent immersion in ethanol dispersion, this process was repeated 20 times. Dry the soaked cigarette filter in an oven at a temperature of 85° C. for 1.5 hours. The dried cigarette filter was placed in a crucible and carbonized in a tube furnace. Firstly, nitrogen gas is introduced with a flow rate of 100 sccm. The temperature of the furnace is raised to 880°C-900°C and then kept for 120 minutes at a heating rate of 10-20°C / min. After the furnace cools down to room temperature, the nitrogen gas is turned off. Get the cigarette filter / graphene composite material SEM picture such as image 3 As shown, it can be seen that there are many do...

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Abstract

The invention discloses a preparation method of a cigarette filter tip and graphene composite material. The preparation method comprises the following steps: soaking recycled cigarette filter tips into an oxidized graphene and ethyl alcohol dispersion liquid repeatedly, drying, and then carrying out carbonization to obtain the cigarette filter tip and graphene composite material. The invention also discloses application of the prepared material. Oxidized graphene is doped into the filter tips of waste cigarette ends by controlling the dispersion concentration of the oxidized graphene inside anethyl alcohol solution. After carbonization, the oxidized graphene is thermally reduced into graphene and is doped into the material, and the material contains trace elements such as nitrogen. The obtained composite material is porous, and has high specific surface area and excellent electrical conductivity and ion transmission property. Therefore, the composite material can serve as an electrodematerial of supercapacitors. The preparation method has the advantages of simple technology, low cost and high speed, the waste cigarette ends can be directly recycled, and the composite material hasgood environmental benefits and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a method for preparing a cigarette filter / graphene composite material, and also relates to an application of the cigarette filter / graphene composite material prepared by the method. Background technique [0002] According to the World Health Organization, the number of smokers in the world will rise to 1.7 billion in 2025. China is the largest cigarette producing country and the largest cigarette consuming country in the world. According to statistics, the number of smokers in China is nearly 400 million, and the number continues to rise every year. These discarded cigarette butts have caused a great negative impact on the environment, so the recycling of discarded cigarette butts has important application value. [0003] The recycling of waste cigarette butts mainly refers to the recycling of filters and the substances such as nicotine and solanesol adsorbed in them. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/44
CPCY02E60/13H01G11/24H01G11/36H01G11/44
Inventor 程有亮张庆玲方长青
Owner XIAN UNIV OF TECH
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