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Preparation method of foamed porous graphene/polypyrrole composite oil absorption material

An oil-absorbing material and foam porous technology, which is applied in the field of preparation of foam porous composite materials, can solve problems such as fragile structure, complicated operation, and high price, and achieve the effects of high oil absorption performance, mild reaction conditions, and simple operation

Inactive Publication Date: 2012-08-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are reports in the literature that the vapor deposition method is used to form foamed graphene with nickel foam as a template. This method is expensive and complicated to operate, and requires high equipment requirements. In addition, there are reports in the literature that porous graphene is obtained by superimposing the π bonds of graphene itself. However, this graphene structure is relatively fragile, easy to collapse, and has poor reusability.

Method used

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  • Preparation method of foamed porous graphene/polypyrrole composite oil absorption material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Disperse graphite oxide into a solution with a volume ratio of ethanol / water = 100:1, heat to 50°C, add KH570 with a mass ratio of 0.8 to graphite oxide in the above system, react for 4 hours, and use ethanol and deionized water as the product After washing several times, vacuum-dry at 60°C for 48 hours to obtain functionalized graphite oxide.

[0015] 2) Ultrasonically disperse the functionalized graphite oxide product into water for 6 hours to form a 1.5 mg / ml graphene oxide aqueous solution, and add pyrrole with a mass ratio of 0.8 to graphite oxide and styrene with a mass ratio of 0.1 to graphite oxide to the solution and 2.5% ammonium persulfate initiator of graphite oxide mass fraction. React at a constant temperature of 160° C. for 10 h in a hydrothermal reactor to obtain a black solid.

[0016] 3) The black solid was freeze-dried to obtain a graphene / polypyrrole oil-absorbing material A with a three-dimensional structure.

Embodiment 2

[0018] 1) Disperse graphite oxide into a solution with a volume ratio of ethanol / water = 100:2, heat to 60°C, add KH570 with a mass ratio of 0.8 to graphite oxide in the above system, and react for 4 hours. The product is mixed with ethanol and deionized water After washing several times, vacuum-dry at 60°C for 48 hours to obtain functionalized graphite oxide.

[0019] 2) Ultrasonically disperse the functionalized graphite oxide product into water for 6 hours to form a 2 mg / ml graphene oxide aqueous solution, add pyrrole with a mass ratio of 1 to graphite oxide, and butyl methacrylate with a mass ratio of 0.2 to graphite oxide to the solution. 5% potassium persulfate initiator of ester and graphite oxide mass fraction. React at a constant temperature of 170°C for 10 h in a hydrothermal reactor to obtain a black solid.

[0020] 3) The black solid was freeze-dried to obtain a graphene / polypyrrole oil-absorbing material B with a three-dimensional structure.

Embodiment 3

[0022] 1) Disperse graphite oxide into a solution with a volume ratio of ethanol / water = 100:4, heat to 80°C, add KH570 with a mass ratio of 1 to graphite oxide in the above system, react for 4 hours, and use ethanol and deionized water as the product After washing several times, vacuum-dry at 60°C for 48 hours to obtain functionalized graphite oxide.

[0023] 2) The functionalized graphite oxide product was ultrasonically dispersed into water for 6 hours to form a 3 mg / ml graphene oxide aqueous solution, and pyrrole with a mass ratio of 0.6 to graphite oxide and methacrylic acid with a mass ratio of 0.5 to graphite oxide were added to the solution. 6% potassium persulfate initiator of diester and graphite oxide mass fraction. React at a constant temperature of 180 ° C for 10 h in a hydrothermal reactor to obtain a black solid.

[0024] 3) The black solid is freeze-dried to obtain a graphene / polypyrrole oil-absorbing material C with a three-dimensional structure.

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Abstract

The invention relates to a preparation method of a foamed porous graphene / polypyrrole composite oil absorption material, belonging to the technical fields of environmental protection and composite materials. The method is characterized by comprising the following steps: carrying out KH570 functionalization on graphite oxide prepared from graphite; carrying out ultrasonic treatment on the functionalized graphite oxide product to obtain a graphene oxide aqueous solution with a certain concentration, adding certain amounts of pyrrole, styrene or butyl methacrylate or lauryl methacrylate and an initiator (ammonium persulfate or potassium persulfate); carrying out thermostatic reaction in a hydrothermal reaction kettle for 10 hours, thereby obtaining a black solid; and carrying out freeze-drying on the black solid to obtain the foamed porous graphene / polypyrrole composite oil absorption material in a three-dimensional structure. The graphene / polypyrrole composite oil absorption material ina three-dimensional structure is prepared by a chemical process, so the material has hydrophobicity and large specific area of the graphene, can contain abundant oil molecules, and has high oil adsorbability. The preparation method is simple to operate, and has the advantage of mild reaction conditions.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and composite materials, and relates to a preparation method of a foam porous composite material, which can be used to deal with pollution caused by oil leakage. Background technique [0002] With the acceleration of the global industrialization process, the problem of marine environmental pollution has become more and more prominent. Especially marine oil spill accidents often cause very serious ecological consequences; the accompanying fires will pollute the atmosphere and lead to a series of secondary pollution. Currently used to deal with oil pollution on the water surface or soil, the use of oil-absorbing materials is the most commonly used and safer method. [0003] Common oil-absorbing materials can be divided into two categories: inorganic materials and organic polymer materials. Inorganic materials have less oil absorption, large volume, high transportation costs, absorb...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08K9/06C08K3/04C08F112/08C08F120/18C08L79/04C08L25/06C08L33/10C09K3/32
Inventor 柳丽芬李华陈会萍杨凤林库培佳李仁杰
Owner DALIAN UNIV OF TECH
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