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Poly-nanotube modified carbon fiber adsorbent as well as preparation and application thereof

A carbon fiber and adsorbent technology, applied in the field of materials, can solve problems such as poor recycling performance and secondary pollution of water bodies

Active Publication Date: 2017-06-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, although it has been reported that activated carbon can be used as an adsorbent to pretreat water bodies, it can only remove solid impurity particles, oil stains, etc. in water bodies; The prolongation of time will cause secondary pollution to the water body

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  • Poly-nanotube modified carbon fiber adsorbent as well as preparation and application thereof
  • Poly-nanotube modified carbon fiber adsorbent as well as preparation and application thereof

Examples

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preparation example Construction

[0074] The present invention also provides a kind of preparation method of described carbon fiber adsorbent, comprises the steps:

[0075] 1) Provide carbon fiber material, first modified solution and second modified solution, wherein,

[0076] The first modification solution includes a first modification agent and a first solvent;

[0077] The second modification solution includes a second modification agent and a second solvent;

[0078] 2) under stirring conditions, adding the carbon fiber material into the first modification solution, heating the resulting mixture, and reacting to obtain a mixture containing the carbon fiber material modified by the first modifier;

[0079] 3) Under ultrasonic-assisted conditions, mix the second modified solution and the product obtained in step 2), and react to obtain a carbon fiber adsorbent modified by a copolymer of the first modifier and the second modifier.

[0080] In another preferred embodiment, the first solvent is selected fro...

Embodiment 1

[0110] Embodiment 1 carbon fiber adsorbent 1

[0111] (1) Carbon fiber activation treatment: immerse 2g polyacrylonitrile (PAN) carbon fiber in 400mL concentrated hydrochloric acid solution, stir and react at a constant temperature of 90°C for 2h, cool to room temperature, wash with deionized water until neutral, and dry in vacuum at 80°C. Activated carbon fiber (CFO) 1 with a diameter of about 6.75 μm was obtained;

[0112] (2) Organic carbon fiber treatment: In a round bottom flask, add 0.4g hexachlorocyclotriphosphazene (HCCP), 40mL anhydrous acetonitrile, 0.2g activated carbon fiber 1, drop 5mL triethylamine, and heat up under stirring to 40°C, and react at a constant temperature of 40°C for 3 hours to obtain HCCP-grafted organic carbon fiber (HCCP-CFO) 2;

[0113] (3) Preparation of poly(cyclotriphosphazene-co-4,4'-dihydroxydiphenylsulfone) nanotube-modified carbon fiber adsorbent: add 0.8 g of 4,4'-diphenylsulfone to a round bottom flask at room temperature Hydroxydiph...

Embodiment 2

[0120] Embodiment 2 carbon fiber adsorbent 2

[0121] (1) Carbon fiber activation treatment: immerse 2g polyacrylonitrile (PAN) carbon fiber in 500mL concentrated hydrochloric acid solution, stir and react at a constant temperature of 100°C for 2h, cool to room temperature, wash with deionized water until neutral, and dry in vacuum at 80°C. Get activated carbon fiber (CFO) 2;

[0122] (2) Organic carbon fiber treatment: In a round bottom flask, add 1g hexachlorocyclotriphosphazene (HCCP), 40mL anhydrous acetonitrile, 0.2g activated carbon fiber 2, drop 5mL triethylamine, and heat up to 40°C, react at a constant temperature of 40°C for 5 hours to prepare HCCP-grafted organic carbon fiber (HCCP-CFO) 2;

[0123] (3) Preparation of poly(cyclotriphosphazene-co-4,4'-dihydroxydiphenylsulfone) nanotube modified carbon fiber adsorbent: at room temperature, add 1.6g 4, 4'-dihydroxydiphenyl sulfone (BPS) and 60mL tetrahydrofuran, the product obtained in step (2) was added to the round bo...

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Abstract

The invention relates to a poly-nanotube modified carbon fiber adsorbent as well as preparation and application thereof. Particularly, the invention discloses a carbon fiber adsorbent which comprises modified carbon fiber, wherein the modified carbon fiber comprises a carbon fiber base, a modified polymer membrane layer combined with the surface of the carbon fiber base, and a poly-nanotube modification layer which is combined with the surface of the modified polymer membrane layer. The invention further discloses a preparation method and application of the carbon fiber adsorbent. The carbon fiber adsorbent is excellent in adsorption property, can be recycled and is free of secondary pollution on water bodies, and a relatively optimal option can be provided for water body purification.

Description

technical field [0001] The invention relates to the field of materials, in particular to a polynanotube modified carbon fiber adsorbent and its preparation and application. Background technique [0002] Heavy metal elements such as copper and chromium widely exist in rocks, soil, river water, seawater and the atmosphere in the earth's crust. As a strong pollutant, when they enter the water body during the ecological cycle, they will pose a serious threat to human health. [0003] At present, although it has been reported that activated carbon can be used as an adsorbent to pretreat water bodies, it can only remove solid impurity particles, oil stains, etc. in water bodies; The prolongation of time will cause the problem of secondary pollution to the water body. [0004] Therefore, there is an urgent need in this field to develop a novel heavy metal ion adsorbent with excellent adsorption performance, recyclable use and no secondary pollution to water bodies. Contents of t...

Claims

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Application Information

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IPC IPC(8): B01J20/32B01J20/20B01J20/28B01J20/26C02F1/28C02F101/22C02F101/20
CPCB01J20/205B01J20/26B01J20/28023B01J20/28035B01J20/3204B01J2220/46B01J2220/4806B01J2220/4812C02F1/281C02F1/283C02F1/285C02F2101/20C02F2101/22
Inventor 陈祥徐海兵祝颖丹刘东陈明达林新耀涂丽艳颜春
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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