Preparation method of filter tip fibers for selectively adsorbing benzopyrene and phenol

A benzopyrene and selective technology, which is applied in the field of composite material preparation, can solve problems such as ineffective adsorption, and achieve the effects of reducing harmful components, reducing pollution, and reducing irritation

Inactive Publication Date: 2015-08-05
WUHAN TEXTILE UNIV
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Problems solved by technology

Since the graphene sheet structure is distributed on the surface of the filter fiber, the strong π-π bond interaction between benzopyrene and g...

Method used

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preparation example Construction

[0023] A kind of preparation method of the filter tip fiber of selective absorption benzopyrene and phenol, described preparation method comprises the following steps:

[0024] a Graphite pre-oxidation: Take 30ml of concentrated sulfuric acid and add it to a 500ml three-necked flask, then weigh 5g of potassium persulfate and slowly add it to the concentrated sulfuric acid, then add 5g of phosphorus pentoxide, raise the temperature to 80°C, and then add 3g of Graphite powder was reacted for 6 hours. After the reaction was completed, it was filtered and washed until no sulfate ions were detected, and then dried in a vacuum oven at 80°C for 3 hours to obtain pre-oxidized graphene. Secondary oxidation of preoxidized graphene: Measure 200ml of concentrated sulfuric acid and add it to a 500ml three-neck flask, place it in an ice bath at 0°C, slowly add preoxidized graphene, and then slowly add 30g of potassium permanganate , raise the temperature to 35°C for 3h, then raise the tempe...

Embodiment 1

[0033] The first step: pre-oxidation, take 30ml of concentrated sulfuric acid and add it to a 500ml three-necked flask, then weigh 5g of potassium persulfate and slowly add it to the concentrated sulfuric acid, then add 5g of phosphorus pentoxide, heat up to 80°C, and then add 3g of graphite powder, reacted for 6h, filtered and washed after the reaction, and then baked in a vacuum oven at 80°C for 3h to obtain pre-oxidized graphene; for secondary oxidation, measure 200ml of concentrated sulfuric acid and add it to a 500ml three-necked flask. Place in an ice bath at 0°C, slowly add pre-oxidized graphene, then add 30g of potassium permanganate, raise the temperature to 35°C for 3h, then raise the temperature to 95°C and stir for 15min, then add the reaction solution and transfer to a 1000ml In the beaker, add 600ml of deionized water, then add 6ml of 30% hydrogen peroxide, then filter, wash with 10% hydrochloric acid and deionized water until neutral, and then bake in a vacuum ov...

Embodiment 2

[0036] The first step: pre-oxidation, take 30ml of concentrated sulfuric acid and add it to a 500ml three-necked flask, then weigh 5g of potassium persulfate and slowly add it to the concentrated sulfuric acid, then add 5g of phosphorus pentoxide, heat up to 80°C, and then add 3g of graphite powder, reacted for 6h, filtered and washed after the reaction, and then baked in a vacuum oven at 80°C for 3h to obtain pre-oxidized graphene; for secondary oxidation, measure 200ml of concentrated sulfuric acid and add it to a 500ml three-necked flask. Place in an ice bath at 0°C, slowly add pre-oxidized graphene, then add 30g of potassium permanganate, raise the temperature to 35°C for 3h, then raise the temperature to 95°C and stir for 15min, then add the reaction solution and transfer to a 1000ml In the beaker, add 600ml of deionized water, then add 6ml of 30% hydrogen peroxide, then filter, wash with 10% hydrochloric acid and deionized water until neutral, and then bake in a vacuum ov...

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Abstract

The invention relates to a preparation method of filter tip fibers for selectively adsorbing benzopyrene and phenol. The preparation method comprises the steps of firstly, performing oxidation treatment on graphite to obtain graphene oxide, performing ultrasonic treatment on the graphene oxide to prepare an aqueous solution or preparing a mixed aqueous solution from the graphene oxide with chitosan, next, dipping the fibers into the aqueous solution of the graphene oxide or in the mixed solution of the graphene oxide and the aqueous solution of the chitosan, drying in vacuum for 6 hours at 80 DEG C, and finally, obtaining the filter tip fibers. According to the preparation method, the chitosan is evenly attached on the surface of the fibers and a remarkable effect of reducing phenol harmful substances can be achieved. Meanwhile, due to strong Pi-Pi interaction between the graphene and the benzopyrene, the graphene modified filter tip is capable of effectively retaining the strong carcinogenic substance benzopyrene in the smoke of cigarette. The preparation method is simple, relatively high in efficiency and low in environmental pollution; meanwhile, the fibers can be modified after the graphene and the chitosan are compounded, and the synergistic effect of the graphene and the chitosan in removing arene harmful substances can be developed; as a result, the preparation method has favorable application prospect.

Description

technical field [0001] The invention relates to a preparation method of a composite material, more specifically a preparation method of a filter fiber selectively adsorbing benzopyrene and phenol. Background technique [0002] At present, there are more and more applications of exploring new materials and technologies in cigarette filters, and the preparation of high-quality and safe low-tar and low-hazard cigarettes is the general trend of international cigarette product development. Generally, the filter tip can filter out the total particulate matter in the smoke and reduce the intake of cigarette tar. Studies have shown that adding a certain amount of activated carbon, sepiolite, zeolite, activated alumina, clay, silica gel and other adsorbents to the filter can selectively filter out some gas phase substances and volatile harmful substances with low boiling points. Volatile substances with high volatility and boiling point (such as strong carcinogen benzopyrene) cannot...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/26B01J20/24B01J20/30A24D3/10
Inventor 王罗新黄乐平陈萌汪志陈少华殷先泽吴静王桦
Owner WUHAN TEXTILE UNIV
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