CN110551393A - preparation method of conductive polymer/graphene oxide composite material - Google Patents
preparation method of conductive polymer/graphene oxide composite material Download PDFInfo
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- CN110551393A CN110551393A CN201910815953.6A CN201910815953A CN110551393A CN 110551393 A CN110551393 A CN 110551393A CN 201910815953 A CN201910815953 A CN 201910815953A CN 110551393 A CN110551393 A CN 110551393A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/02—Polyamines
- C08G73/026—Wholly aromatic polyamines
- C08G73/0266—Polyanilines or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0605—Polycondensates containing five-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0611—Polycondensates containing five-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring, e.g. polypyrroles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/02—Polyamines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The invention provides a preparation method of a conductive polymer/graphene oxide composite material, which is characterized in that a polymerization reaction of an aniline monomer and a pyrrole monomer and an assembly of a three-dimensional structure are carried out simultaneously through a static gas-liquid interface reaction, so that graphene oxide with a negative electric functional group and polyaniline with positive electricity are doped with a polypyrrole polymer chain, and the conductive polymer/graphene oxide composite material with the three-dimensional structure is obtained through self-assembly.
Description
Technical Field
The invention relates to the technical field of composite materials and polymer chemistry, in particular to a preparation method of a conductive polymer/graphene oxide composite material.
background
Polyaniline and polypyrrole in the conductive polymer have the advantages of good redox reversibility, easy synthesis, low price, stability and the like, and are widely applied to the fields of electrochemical anticorrosive materials, electrode materials, sensors, photoelectric devices, electrocatalysis and the like. The synthesis methods of the conductive polymer powder mainly comprise a wet chemical method and an electrochemical method, wherein the wet chemical method is usually used for obtaining conductive polymer powder, and the synthesized powder product can be separated only by centrifuging or filtering and is limited more; electrochemical methods can generally produce conductive polymer films.
Graphene oxide is an important derivative of graphene, a molecular structure of the graphene oxide contains a large number of oxygen-containing functional groups, the graphene oxide can be compounded with other materials, the graphene oxide can be compounded with a plurality of materials by a high-temperature high-pressure hydrothermal synthesis method, the graphene oxide is reduced to obtain reduced graphene oxide, and finally the composite material with a three-dimensional structure is obtained. However, the hydrothermal synthesis method requires high temperature and high pressure, consumes more energy, and destroys the oxygen-containing functional group contained in the graphene oxide in the reaction process.
the traditional method for preparing the composite material with the three-dimensional structure is difficult to prepare a satisfactory product, and a simpler, efficient and safe synthesis method is needed to meet the requirement.
Disclosure of Invention
in view of the above, the present invention aims to provide a method for preparing a conductive polymer/graphene oxide composite material, so as to solve the problems that an oxygen-containing functional group contained in graphene oxide is easily damaged, synthesis conditions are harsh, and a synthesis process is complex in the existing preparation process of a graphene oxide composite material.
in order to achieve the purpose, the technical scheme of the invention is realized as follows:
a preparation method of a conductive polymer/graphene oxide composite material comprises the following steps:
1) Dissolving ferric trichloride in a graphene oxide aqueous solution, and performing ultrasonic dispersion to obtain a ferric trichloride/graphene oxide mixed aqueous solution;
2) respectively placing aniline monomers and pyrrole monomers in different containers, and placing the aniline monomers and the mixed aqueous solution of ferric trichloride and graphene oxide in the same closed space;
3) And pumping out the air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis to obtain the conductive polymer/graphene oxide composite material with the three-dimensional structure.
Optionally, the concentration of the graphene oxide aqueous solution in the step 1) is 1-10 mg/mL, and the mass of the ferric trichloride is 0.005-5 g.
Optionally, the dispersing time of the ultrasonic dispersion in the step 1) is 5-100 min.
Optionally, the volume ratio of the aniline monomer to the pyrrole monomer in the step 2) is 0.5: 1-10: 1.
Optionally, the mixed aqueous solution of ferric trichloride/graphene oxide in the step 2) is located between the aniline monomer and the pyrrole monomer.
Optionally, in the step 2), the distance between the ferric trichloride/graphene oxide mixed aqueous solution and the aniline monomer is 2-15 cm, and the distance between the ferric trichloride/graphene oxide mixed aqueous solution and the pyrrole monomer is 2-15 cm.
Optionally, the synthesis time of the gas/liquid interface synthesis in the step 3) is 5-700 min.
Optionally, the thickness of the conductive polymer/graphene oxide composite material in the step 3) is 0.05-3 cm.
The synthesis principle of the conductive polymer/graphene oxide composite material comprises the following steps:
According to the invention, ferric trichloride and graphene oxide are mixed, aniline and pyrrole monomers can volatilize to the surface layer of a mixed solution under a vacuum condition, the polymerization of the aniline monomers and the pyrrole monomers is initiated through the oxidation of ferric ions, meanwhile, the graphene oxide has a large number of carboxyl groups, participates in the synthesis process of polyaniline and polypyrrole, the polyaniline with positive charges and a polypyrrole high molecular chain are doped, and the conductive high polymer/graphene oxide composite material with a three-dimensional structure is obtained through self-assembly through a static gas-liquid interface reaction.
Compared with the prior art, the preparation method of the conductive polymer/graphene oxide composite material has the following advantages:
1. According to the invention, through a static gas-liquid interface reaction, the polymerization reaction of an aniline monomer and a pyrrole monomer and the assembly of a three-dimensional structure are carried out simultaneously, so that graphene oxide with a negative electric functional group is doped with polyaniline with positive electricity and a polypyrrole polymer chain, and a conductive polymer/graphene oxide composite material with a three-dimensional structure is obtained through self-assembly.
2. the invention has wide raw material source, low price and lower preparation cost, and the preparation process is simple and is beneficial to further promoting the industrialized mass production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
Fig. 1 is a diagram of an embodiment of the conductive polymer/graphene oxide composite material in embodiment 1 of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
the present invention will be described in detail below with reference to the drawings and examples.
example 1
the preparation method of the conductive polymer/graphene oxide composite material of the embodiment specifically includes the following steps:
1) Dissolving 0.5g of ferric trichloride solid into a graphene oxide aqueous solution with the concentration of 6mg/mL, and ultrasonically stirring for 20mim to uniformly mix the ferric trichloride solid and the graphene oxide aqueous solution to obtain a ferric trichloride/graphene oxide mixed aqueous solution;
2) Respectively putting 0.005mL of aniline monomer and 0.01mL of pyrrole monomer into different containers, and putting the aniline monomer and the pyrrole monomer together with the mixed aqueous solution of ferric trichloride and graphene oxide into the same closed space, wherein the distance between the mixed aqueous solution of ferric trichloride and graphene oxide and the two monomers is 4cm, and the mixed aqueous solution of ferric trichloride and graphene oxide is positioned between the two monomers;
3) and (3) pumping out air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis, wherein the synthesis time is 200min, so as to obtain the conductive polymer/graphene oxide composite material with the thickness of 0.5cm and the three-dimensional structure, and the actual photo is shown in fig. 1.
example 2
the preparation method of the conductive polymer/graphene oxide composite material of the embodiment specifically includes the following steps:
1) dissolving 1g of ferric trichloride solid into a graphene oxide aqueous solution with the concentration of 10mg/mL, and ultrasonically stirring for 40mim to uniformly mix the ferric trichloride solid and the graphene oxide aqueous solution to obtain a ferric trichloride/graphene oxide mixed aqueous solution;
2) Respectively putting 0.01mL of aniline monomer and 0.01mL of pyrrole monomer in different containers, and putting the aniline monomer and the pyrrole monomer together with the mixed aqueous solution of ferric trichloride and graphene oxide in the same closed space, wherein the distance between the mixed aqueous solution of ferric trichloride and graphene oxide and the two monomers is 6cm, and the mixed aqueous solution of ferric trichloride and graphene oxide is positioned between the two monomers;
3) And (3) pumping out air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis reaction for 300min to obtain the conductive polymer/graphene oxide composite material with the thickness of 1cm and the three-dimensional structure.
Example 3
The preparation method of the conductive polymer/graphene oxide composite material of the embodiment specifically includes the following steps:
1) Dissolving 1.5g of ferric trichloride solid into 8mg/mL graphene oxide aqueous solution, and ultrasonically stirring for 60mim to uniformly mix the ferric trichloride solid and the graphene oxide aqueous solution to obtain ferric trichloride/graphene oxide mixed aqueous solution;
2) Respectively putting 0.05mL of aniline monomer and 0.1mL of pyrrole monomer in different containers, and putting the aniline monomer and the pyrrole monomer together with the mixed aqueous solution of ferric trichloride and graphene oxide in the same closed space, wherein the distance between the mixed aqueous solution of ferric trichloride and graphene oxide and the two monomers is 8cm, and the mixed aqueous solution of ferric trichloride and graphene oxide is positioned between the two monomers;
3) And (3) pumping out air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis reaction for 400min to obtain the conductive polymer/graphene oxide composite material with the thickness of 1.5cm and the three-dimensional structure.
example 4
The preparation method of the conductive polymer/graphene oxide composite material of the embodiment specifically includes the following steps:
1) Dissolving 3g of ferric trichloride solid into a graphene oxide aqueous solution with the concentration of 10mg/mL, and ultrasonically stirring 80mim to uniformly mix the ferric trichloride solid and the graphene oxide aqueous solution to obtain a ferric trichloride/graphene oxide mixed aqueous solution;
2) Respectively putting 1mL of aniline monomer and 0.1mL of pyrrole monomer in different containers, and placing the aniline monomer and the 0.1mL of pyrrole monomer in the same closed space together with the mixed aqueous solution of ferric trichloride and graphene oxide, wherein the distance between the mixed aqueous solution of ferric trichloride and graphene oxide and the two monomers is 10cm, and the mixed aqueous solution of ferric trichloride and graphene oxide is positioned between the two monomers;
3) And (3) pumping out air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis reaction for 600min to obtain the conductive polymer/graphene oxide composite material with the thickness of 2.2cm and the three-dimensional structure.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation method of a conductive polymer/graphene oxide composite material is characterized by comprising the following steps:
1) Dissolving ferric trichloride in a graphene oxide aqueous solution, and performing ultrasonic dispersion to obtain a ferric trichloride/graphene oxide mixed aqueous solution;
2) Respectively placing aniline monomers and pyrrole monomers in different containers, and placing the aniline monomers and the mixed aqueous solution of ferric trichloride and graphene oxide in the same closed space;
3) and pumping out the air in the closed space to form vacuum, and carrying out gas/liquid interface synthesis to obtain the conductive polymer/graphene oxide composite material with the three-dimensional structure.
2. the preparation method of the conductive polymer/graphene oxide composite material according to claim 1, wherein the concentration of the graphene oxide aqueous solution in the step 1) is 1-10 mg/mL, and the mass of the ferric trichloride is 0.005-5 g.
3. the preparation method of the conductive polymer/graphene oxide composite material according to claim 1, wherein the dispersion time of the ultrasonic dispersion in the step 1) is 5-100 min.
4. The preparation method of the conductive polymer/graphene oxide composite material according to claim 1, wherein the volume ratio of the aniline monomer to the pyrrole monomer in the step 2) is 0.5: 1-10: 1.
5. The method for preparing the conductive polymer/graphene oxide composite material according to claim 1, wherein the mixed aqueous solution of ferric trichloride/graphene oxide in the step 2) is located between the aniline monomer and the pyrrole monomer.
6. the method for preparing the conductive polymer/graphene oxide composite material according to claim 5, wherein the distance between the ferric trichloride/graphene oxide mixed aqueous solution and the aniline monomer in the step 2) is 2-15 cm, and the distance between the ferric trichloride/graphene oxide mixed aqueous solution and the pyrrole monomer is 2-15 cm.
7. the method for preparing the conductive polymer/graphene oxide composite material according to claim 1, wherein the synthesis time of the gas/liquid interface synthesis in the step 3) is 5-700 min.
8. The method for preparing the conductive polymer/graphene oxide composite material according to claim 1, wherein the thickness of the conductive polymer/graphene oxide composite material in the step 3) is 0.05-3 cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508721A (en) * | 2020-04-24 | 2020-08-07 | 刘庆信 | Graphene modified aniline-pyrrole copolymer electrode material and preparation method thereof |
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| CN111508721A (en) * | 2020-04-24 | 2020-08-07 | 刘庆信 | Graphene modified aniline-pyrrole copolymer electrode material and preparation method thereof |
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