CN106009444A - Preparation method of polypyrrole-graphene-polyvinyl alcohol composite aerogel - Google Patents
Preparation method of polypyrrole-graphene-polyvinyl alcohol composite aerogel Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- 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
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- C08J2205/00—Foams characterised by their properties
- C08J2205/02—Foams characterised by their properties the finished foam itself being a gel or a gel being temporarily formed when processing the foamable composition
- C08J2205/026—Aerogel, i.e. a supercritically dried gel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use 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 C08J2361/00 - C08J2377/00
- C08J2379/04—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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use 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 C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
Abstract
The invention discloses a preparation method of polypyrrole-graphene-polyvinyl alcohol composite aerogel. The preparation method comprises the following steps: (1) dispersing graphene oxide into a dispersing agent, to obtain graphene oxide dispersed liquid with a certain concentration; (2) adding pyrrole, a glutaraldehyde solution and a polyvinyl alcohol solution into the graphene oxide dispersed liquid obtained in the step (1) in sequence, uniformly stirring the components, and allowing the uniform mixture to stand still for a period of time; (3) cyclically freezing and defreezing a composite obtained in the step (2) at low temperature and normal temperature for multiple times, to obtain pyrrole-graphene oxide-polyvinyl alcohol composite aerogel; (4) putting the composite aerogel obtained in step (3) into an oxidant and hydrazine hydrate in sequence, to obtain the polypyrrole-graphene-polyvinyl alcohol composite aerogel. The preparation process of the preparation method is simple; the obtained composite aerogel is extremely high in electrochemical performance and compression resilience, and can be used for producing novel electronic devices such as a compressible supercapacitor.
Description
Technical field
The invention belongs to field of material preparation, relate to the preparation method of a kind of polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
Background technology
Polyvinyl alcohol is a kind of broad-spectrum water soluble polymer, nontoxic, nonirritant, containing substantial amounts of hydroxyl in its strand
Base, polarity is strong, is easily formed hydrogen bond, therefore has good hydrophilic, and its performance is between rubber and plastics.But poly-second
The intensity of enol own is low, heat-resisting, poor water resistance, makes polyvinyl alcohol be restricted in the most many application.
Polypyrrole, as the representative of conducting polymer, is built the conjugation formed big π key system by Dan Shuan alternately, is had special physics
Chemical property, at opto-electronic device, there is good application prospect in the field such as sensor.But pure polypyrrole is insoluble in water,
Poor ductility, processing difficulties.
Surface of graphene oxide contains the functional groups such as substantial amounts of carboxyl, hydroxyl and carbonyl, can be dispersed in water or organic solvent.Will
After its reduction Graphene of obtaining there is high ratio table and amass, good electrical conductivity, the electronic conduction ability of excellence and mechanical performance.
Therefore add in polymer as packing material, can effectively improve the electricity of polymer, heat, mechanical performance, significantly carry
The high properties of complex.But Graphene hydrophilicity is poor, and lamella is easily reunited, is stacked so that it compares
Surface area is greatly reduced, and reduces performance in the composite.
Macromolecular material is generally divided into chemical method and electrochemical method with the complex method of Graphene at present.Compound with generally preparation
The blend method of material is compared, and chemical copolymerization method can utilize the conjugated structure of high molecular structure and Graphene, it is achieved macromolecule
With Graphene macroscopic view and combining closely on microcosmic level.How by polyvinyl alcohol, Graphene, polypyrrole three is effectively multiple
Closing, form one and have compression and back renaturation, polypyrrole-Graphene-polyvinyl alcohol composite aerogel that chemical property is good is system
Key issue in Bei.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of polypyrrole-Graphene-polyvinyl alcohol composite aerogel, the method is anti-
Answering mild condition, technique is simple, and production cost is low, and the polypyrrole-Graphene-polyvinyl alcohol composite aerogel prepared has well
Electric conductivity and compression and back renaturation.
To achieve these goals, the technical solution used in the present invention is as follows: a kind of polypyrrole-Graphene-polyvinyl alcohol is combined gas
The preparation method of gel, it is characterised in that it comprises the steps:
(1) graphene oxide solid is joined in dispersant, obtain certain density graphite oxide by stirring, ultrasonic disperse
Alkene dispersion liquid, standby；
(2) take the graphene oxide dispersion that in step (1), preparation obtains, be sequentially added into pyrroles, glutaraldehyde solution, poly-second
Enolate solution, after stirring, stands a period of time；
(3) complex step (2) obtained circulating frozen under low temperature and room temperature thaws for several times, obtains pyrroles-graphite oxide
Alkene-polyvinyl alcohol gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel that step (3) obtains is sequentially placed in oxidant, hydrazine hydrate,
Obtain polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
By such scheme, it is preferable that the dispersant described in step (1) be distilled water, ethanol, dimethylformamide, chloroform,
N-butyl alcohol, one or more mixture of propanol.
By such scheme, it is preferable that the concentration of the graphene oxide dispersion described in step (1) is 0.01～10mg/mL.
By such scheme, it is preferable that described in step (2), the concentration of glutaraldehyde solution is 10～25wt%.
By such scheme, it is preferable that the concentration of the poly-vinyl alcohol solution described in step (2) is 10～200mg/mL.
By such scheme, it is preferable that the consumption of the graphene oxide dispersion described in step (2) is 1～100mL, pyrroles
Consumption is 10～200 μ L, and glutaraldehyde solution consumption is 0.1～10mL, and poly-vinyl alcohol solution consumption is 0.1～10mL.
By such scheme, it is preferable that the mixing time described in step (2) is 0.5～12h, time of repose is 0.5～12h.
By such scheme, it is preferable that the low temperature range described in step (3) is-70～-10 DEG C.
By such scheme, it is preferable that the number of times that circulating frozen described in step (3) thaws is 1～20 time.
By such scheme, it is preferable that the oxidant described in step (4) is ferric chloride, ferric nitrate, iron sulfate or persulfuric acid
Ammonium.
By such scheme, it is preferable that the amount of the material of the oxidant described in step (4) and the pyrroles described in step (2)
Ratio be 0.5～14, the consumption of the hydrazine hydrate described in step (4) is 10～200 μ L.
By such scheme, it is preferable that the pyrroles-graphene oxide-polyvinyl alcohol gel described in step (4) is placed in oxidant
Time be 5～50h, the time being placed in hydrazine hydrate is 4～24h.
Compared with prior art, the present invention has a following prominent effect:
1) polypyrrole-Graphene-polyvinyl alcohol composite aerogel made according to the inventive method has loose structure, has good
Amphipathic property, electric conductivity and compression and back renaturation, have preferable application prospect in the field such as biomaterial, compressible capacitor；
2) in preparation method, first graphene oxide and pyrrole monomer are dispersed in polyvinyl alcohol, repolymerization pyrrole monomer with also
Former graphene oxide, it is achieved that dispersed in polyvinyl alcohol matrix of polypyrrole and Graphene；
3) preparation technology of the present invention is very simple, is suitable for industrialized production, and can control each constituent content in composite aerogel.
Accompanying drawing explanation
Fig. 1 is the polypyrrole-Graphene-polyvinyl alcohol composite aerogel of embodiment 1 preparation compression reaction figure under ballast load.
The most left figure is to place the initial condition before counterweight, compressive state when middle graph is to place counterweight, right figure be remove counterweight after
Recoil state.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but present disclosure is not
It is limited only to the following examples.
Embodiment 1
(1) 5g pva powder is dissolved in 500mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 10mg/mL；
(2) 50mg graphene oxide solid is joined in 50mL distilled water, obtain concentration by stirring, ultrasonic disperse be
The finely dispersed graphene oxide solution of 1mg/mL.
(3) being sequentially added into 20 μ L pyrrole monomer (0.28mmol) in 20mL graphene oxide dispersion, 0.2mL concentration is
10wt% glutaraldehyde solution, 5mL poly-vinyl alcohol solution, after stirring 0.5h, stand 1h；By the complex that obtains at-60 DEG C and often
The lower circulating frozen of temperature thaws 8 times, obtains pyrroles-graphene oxide-polyethylene gel.
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 6h in the ammonium persulfate solution of 12mL 0.1mol/L, then
It is placed in 120 μ L hydrazine hydrates lower 6h, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
Polypyrrole-Graphene-polyvinyl alcohol the composite aerogel obtained is compressed recovery test, 1000g counterweight is placed in
Above this composite aerogel, observing the compression reaction situation of this composite aerogel, result is shown in Fig. 1.
Utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel electrical conductivity is 1.24*10-5S/cm。
Embodiment 2
(1) 5g pva powder is dissolved in 250mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 20mg/mL；
(2) 50mg graphene oxide solid is joined in 25mL distilled water, obtain concentration by stirring, ultrasonic disperse be
The finely dispersed graphene oxide solution of 2mg/mL.
(3) being sequentially added into 30 μ L pyrrole monomer (0.43mmol) in 20mL graphene oxide dispersion, 1mL concentration is 15wt%
Glutaraldehyde solution, 2mL poly-vinyl alcohol solution, stirring 1h after, stand 1h；By the complex that obtains under-10 DEG C and room temperature
Circulating frozen thaws 5 times, obtains pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 6h in the ammonium persulfate solution of 15mL 0.1mol/L, then
It is placed in 12h in 120 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 2.52*10-5S/cm。
Embodiment 3
(1) 5g pva powder is dissolved in 100mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 50mg/mL；
(2) joining in 25mL ethanol by 50mg graphene oxide solid, obtaining concentration by stirring, ultrasonic disperse is 2mg/mL
Finely dispersed graphene oxide solution.
(3) being sequentially added into 40 μ L pyrrole monomer (0.57mmol) in 15mL graphene oxide dispersion, 0.5mL concentration is
The glutaraldehyde solution of 20wt%, 2mL poly-vinyl alcohol solution, after stirring 1h, stand 5h；By the complex that obtains at-30 DEG C and often
The lower circulating frozen of temperature thaws 5 times, obtains pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 12h in the ammonium persulfate solution of 20mL 0.1mol/L, then
It is placed in 18h in 60 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 4.65*10-5S/cm。
Embodiment 4
(1) 5g pva powder is dissolved in 250mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 20mg/mL；
(2) 50mg graphene oxide solid is joined in 25mL distilled water, obtain concentration by stirring, ultrasonic disperse be
The finely dispersed graphene oxide solution of 2mg/mL.
(3) being sequentially added into 100 μ L pyrrole monomer (1.44mmol) in 50mL graphene oxide dispersion, 1mL concentration is
The glutaraldehyde solution of 25wt%, 2mL poly-vinyl alcohol solution, after stirring 1h, stand 1h；By the complex that obtains at-50 DEG C and often
The lower circulating frozen of temperature thaws 3 times, obtains pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 12h in the liquor ferri trichloridi of 15mL 0.2mol/L, then
It is placed in 10h in 120 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 6.57*10-5S/cm。
Embodiment 5
(1) 5g pva powder is dissolved in 50mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 100mg/mL；
(2) 5mg graphene oxide solid is joined in 1mL dimethylformamide, obtain concentration by stirring, ultrasonic disperse
For the finely dispersed graphene oxide solution of 5mg/mL.
(3) being sequentially added into 200 μ L pyrrole monomer (2.89mmol) in 30mL graphene oxide dispersion, 2mL concentration is
10wt% glutaraldehyde solution, 0.5mL poly-vinyl alcohol solution, after stirring 1h, stand 1h；By the complex that obtains at-65 DEG C and often
The lower circulating frozen of temperature thaws 5 times, obtains pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 12h in 5mL 0.4mol/L ammonium persulfate solution, then puts
20h in 100 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 1.32*10-4S/cm。
Embodiment 6
(1) 5g pva powder is dissolved in 27.8mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 180mg/mL；
(2) 5mg graphene oxide solid is joined in 100mL chloroform, obtain concentration by stirring, ultrasonic disperse be
The finely dispersed graphene oxide solution of 0.05mg/mL.
(3) in 100mL graphene oxide dispersion, it is sequentially added into 150 μ L pyrrole monomer (2.17mmol), 10mL concentration
For 15wt% glutaraldehyde solution, 10mL poly-vinyl alcohol solution, after stirring 11h, stand 12h；By the complex that obtains at-25 DEG C
Thaw 18 times with circulating frozen under room temperature, obtain pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 48h in 50mL 0.4mol/L ammonium persulfate solution, then puts
4h in 180 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 4.82*10-5S/cm。
Embodiment 7
(1) 5g pva powder is dissolved in 33.3mL distilled water, obtains the poly-vinyl alcohol solution that concentration is 150mg/mL；
(2) 5mg graphene oxide solid is joined in 0.7mL dimethylformamide, obtain dense by stirring, ultrasonic disperse
Degree is the finely dispersed graphene oxide solution of 7mg/mL.
(3) being sequentially added into 100 μ L pyrrole monomer (1.44mmol) in 80mL graphene oxide dispersion, 5mL concentration is
20wt% glutaraldehyde solution, 8mL poly-vinyl alcohol solution, after stirring 5h, stand 0.5h；By the complex that obtains at-45 DEG C and often
The lower circulating frozen of temperature thaws 2 times, obtains pyrroles-graphene oxide-polyethylene gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel is placed in 30h in 50mL 0.4mol/L ammonium persulfate solution, then puts
24h in 15 μ L hydrazine hydrates, obtains polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
The electrical conductivity utilizing four probe method to record this polypyrrole-Graphene-polyvinyl alcohol composite aerogel is 8.95*10-5S/cm。
Each raw material cited by the present invention can realize the present invention, and the bound value of each raw material, interval value can realize this
Invention；Embodiment numerous to list herein.The bound value of technological parameter (such as temperature, time etc.) of the present invention, interval
Value can realize the present invention, embodiment numerous to list herein.
Claims (10)
1. the preparation method of polypyrrole-Graphene-polyvinyl alcohol composite aerogel, it is characterised in that it comprises the steps:
(1) graphene oxide solid is joined in dispersant, obtain certain density graphite oxide by stirring, ultrasonic disperse
Alkene dispersion liquid, standby；
(2) take the graphene oxide dispersion that in step (1), preparation obtains, be sequentially added into pyrroles, glutaraldehyde solution, poly-second
Enolate solution, after stirring, stands a period of time；
(3) complex step (2) obtained circulating frozen under low temperature and room temperature thaws for several times, obtains pyrroles-graphite oxide
Alkene-polyvinyl alcohol gel；
(4) pyrroles-graphene oxide-polyvinyl alcohol gel that step (3) obtains is sequentially placed in oxidant, hydrazine hydrate,
Obtain polypyrrole-Graphene-polyvinyl alcohol composite aerogel.
Preparation method the most according to claim 1, it is characterised in that: the dispersant described in step (1) be distilled water,
Ethanol, dimethylformamide, chloroform, n-butyl alcohol, one or more mixture of propanol.
Preparation method the most according to claim 1, it is characterised in that: the graphene oxide dispersion described in step (1)
Concentration be 0.01～10mg/mL.
Preparation method the most according to claim 1, it is characterised in that: the concentration of the glutaraldehyde solution described in step (2)
It is 10～25wt%；The concentration of the poly-vinyl alcohol solution described in step (2) is 10～200mg/mL.
Preparation method the most according to claim 1, it is characterised in that: the graphene oxide dispersion described in step (2)
Consumption be 1～100mL, pyrroles's consumption is 10～200 μ L, and glutaraldehyde solution consumption is 0.1～10mL, poly-vinyl alcohol solution
Consumption is 0.1～10mL.
Preparation method the most according to claim 1, it is characterised in that: the mixing time described in step (2) be 0.5～
12h, time of repose is 0.5～12h.
Preparation method the most according to claim 1, it is characterised in that: the low temperature range described in step (3) be-70～
-10 DEG C, the number of times that described circulating frozen thaws is 1～20 time.
Preparation method the most according to claim 1, it is characterised in that: the oxidant described in step (4) be ferric chloride,
Ferric nitrate, iron sulfate or Ammonium persulfate..
Preparation method the most according to claim 1, it is characterised in that: the oxidant described in step (4) and step (2)
Described in the ratio of amount of material of pyrroles be 0.5～14, the consumption of the hydrazine hydrate described in step (4) is 10～200 μ L.
Preparation method the most according to claim 1, it is characterised in that: the gel described in step (4) is placed in oxidant
In time be 5～50h, the time being placed in hydrazine hydrate is 4～24h.
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| CN113926397A (en) * | 2020-07-14 | 2022-01-14 | 厦门大学 | Graphene pyrrole aerogel and preparation method and application thereof |
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