CN109809396A - A kind of redox graphene aeroge and its vapor hydrothermal reduction preparation method - Google Patents
A kind of redox graphene aeroge and its vapor hydrothermal reduction preparation method Download PDFInfo
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Abstract
A kind of method that vapor hydrothermal reduction prepares redox graphene aeroge, belongs to aeroge preparation technical field.The present invention is from preparing graphene oxide aqueous dispersions, graphite oxide aerogel is prepared first with freeze-drying method, then it restores to obtain redox graphene aeroge by vapor hydro-thermal method, convenient and efficient low energy consumption is prepared for redox graphene aeroge.Redox graphene aeroge prepared by the present invention combines the excellent electric conductivity of graphene, the low energy consumption of the light porous feature of aeroge and vapor hydrothermal reduction technology, the multiple advantage such as pollution-free.The method of vacuum freeze drying used in the present invention has the advantages that easy to operate, mild condition, low in cost and technique are easy to amplify.The redox graphene aeroge of preparation can be widely applied to the fields such as water-oil separating, Adsorption of Organic, super capacitor, battery, sensing.
Description
Technical field
The invention belongs to aeroge preparation technical fields, and in particular to one kind passes through freezing using graphene oxide as raw material
The redox graphene aeroge and preparation method thereof of dry and vapor hydrothermal reduction preparation.The reduction-oxidation graphite of preparation
Alkene aeroge can be widely applied to the fields such as water-oil separating, Adsorption of Organic, super capacitor, battery, sensing.
Background technique
Aeroge is a kind of the light porous of the structure-controllable for mutually being coalesced by colloidal particle or the high-polymer molecule and being constituted
Property solid-state material.Microcosmos network structure has hole abundant, provides big specific surface area, before it has wide application
Scape has been used for acoustic impedance coupling material, catalyst or catalyst carrier, adsorbent, filtering material, high temperature insulating material and height
Performance cell material, has attracted the research interest of more and more scholars in the recent period.
Graphene is a kind of new carbon, it is the single layer of carbon atom by plane with sp2Hybridized orbit forms hexangle type
In the planar structure of honeycomb crystal lattice, only one carbon atom thickness is most thin material currently known in the world.Graphene
It is but also most hard nano material that it is most thin, which to be currently world, it is almost fully transparent, the light of absorption 2.3%；It is thermally conductive
Coefficient is up to 5300W/mK, is higher than carbon nanotube and diamond, its electron mobility is more than 15000cm under room temperature2/ Vs,
It is higher than carbon nanotubes or silicon crystal, and resistivity about 10-6Ω cm, it is lower than copper or silver, it is the smallest material of world resistivity
Material.Because its resistivity is extremely low, the speed of electron transfer is exceedingly fast, therefore is expected to can be used to develop thinner, conductive speed faster
Electronic component or transistor of new generation.Since graphene is substantially a kind of transparent, good conductor, it is saturating to be also adapted to manufacture
Bright Touch Screen, tabula rasa, even solar battery.Its excellent mechanical performance, the specific surface area of superelevation, preferable heat transfer
Ability, high electronic conduction ability make it in necks such as super capacitor, sensor, organization bracket, drug conduction and solar batteries
Domain has become a hot topic of research.In recent years, researcher has carried out many trials in various application fields to it, but is actually answering
In, due to the strong pi-pi accumulation and van der Waals interaction on graphene film surface between graphene sheet layer, occur serious irreversible
Interlayer polycondensation, effective surface area greatly reduce, and limit grapheme material in the potential of the fields such as electrochemical electrode, composite material
Using.Recently, by the material of two-dimensional nanoscale (such as graphene platelet) be configured to three-dimensional macro structure (such as laminar film and
Porous support) it attracts wide attention, this is to explore the advanced feature of single two-dimensional slice with important one for practical application
Step.
Since the preparation of graphene at this stage mainly has micromechanics partition method, chemical vapour deposition technique, low temperature thermal reduction
With four kinds of methods of oxidation-reduction method.And it is micromechanics partition method low yield, at high cost, it is unsatisfactory for industrialization and large-scale production is wanted
It asks, chemical vapour deposition technique can satisfy the requirement of prepare with scale high-quality graphene, but higher cost, complex process, low
Warm reduction method generally takes a long time, and reduction efficiency is lower.After oxidation-reduction method is suggested, with its simple and easy technique
The simplest method of graphene is prepared as laboratory, and solves graphene and is difficult to be dispersed in the problems in solvent, is obtained
To the favor of vast graphene researcher, so we carry out redox graphene airsetting on the basis of oxidation-reduction method
The preparation research of glue.
Redox graphene aeroge mainly has following three kinds of preparation methods at this stage, and method is first is that by cheap graphite
With Hummers method oxidation removing at graphene oxide, graphene oxide dispersion is self-assembled into three by chemistry or thermal reduction
Graphene network is tieed up, then by being further dried to obtain redox graphene aeroge；Method is second is that the oxidation stone that will be obtained
Black alkene dispersion liquid directly freezed is dry, then obtains redox graphene aeroge by the method for strong reductant electronation；
Method is freeze-dried third is that obtained graphene oxide dispersion is mixed with crosslinking agent, then by high in protective gas
The method of temperature calcining obtains redox graphene aeroge.Although these three methods can largely prepare redox graphene
Aeroge, but the shape of redox graphene aeroge for preparing of method one can be because can be by when Graphene gel
It is shunk according to container shapes equal proportion, seriously affects the volume and density of aeroge；The reducing agent of method two is easy to bring waste liquid dirty
Dye, using reducing agents such as Dimethylhydrazine, hydroquinone, sodium borohydride and liquid hydrazines, reactant or reaction product are mostly venomous injurant
Matter, effect on environment are huge；The protective gas and high-temperature calcination that method three needs to flow, the at high cost of preparation, energy consumption are high, safe
Coefficient is low.
There is an urgent need to develop a kind of easy mouldings out, small, easy to operate, time-consuming short, the pollution-free, cost of density at present for this field
Low redox graphene aeroge preparation method.
Summary of the invention
The purpose of the present invention is to provide a kind of vapor hydrothermal reduction preparation redox graphene aeroge and its
Preparation method.Redox graphene aeroge prepared by the present invention combine the excellent electric conductivity of graphene, aeroge it is light
The multiple advantage such as the low energy consumption of the porous feature of matter and vapor hydrothermal reduction technology, pollution-free.Vacuum used in the present invention is cold
Dry method is lyophilized, has the advantages that easy to operate, mild condition, low in cost and technique are easy to amplify.
The method that a kind of vapor hydrothermal reduction of the present invention prepares redox graphene aeroge, step is such as
Under:
1) preparation of graphene oxide aqueous dispersions:
Graphene oxide is prepared with the Hummers method (ACS NANO, 2010,4 (8): 4806-4814.) of improvement
Aqueous dispersions；
2) preparation of graphene oxide aeroge:
The graphene oxide aqueous dispersions that step 1) is prepared first are concentrated into 5~20mg/mL concentration, then dilute with water
It releases to 3~10mg/mL concentration, then the dilution is placed in high-low temperature resistant (- 196 DEG C~250 DEG C) vessel of certain shapes
It is freezed, the sample of freezing is then subjected to vacuum freeze drying again, so that the graphene oxide gas of brown be prepared
Gel；
3) preparation of redox graphene aeroge:
The graphene oxide aeroge that step 2) obtains is placed in polytetrafluoroethylene (PTFE) height together with high temperature-resistant vessel
It presses in reaction kettle, and aqueous solution is added in the gap between high temperature-resistant vessel and polytetrafluoroethylene (PTFE) autoclave, is not easy to wave
The salting liquid of hair, not volatile aqueous slkali or not volatile acid solution, heating reaction kettle carry out vapor hydro-thermal reaction, instead
Sample should be taken out after the completion, be dried in vacuo and demoulded at room temperature, to obtain the reduction-oxidation graphite of black of the present invention
Alkene aeroge.
The temperature of freezing described in step 2) is -20 DEG C~-196 DEG C, and the time of freezing is 0.5~20 hour.
The temperature of vacuum freeze drying described in step 2) is -50~-80 DEG C, and the time of vacuum freeze drying is 6~48
Hour.
The temperature of hydro-thermal reaction described in step 3) is 100~250 DEG C, and the time of hydro-thermal reaction is 3~12h.
Aqueous solution described in step 3) is deionized water, tap water, river water or sodium-chloride water solution, potassium chloride is water-soluble
Liquid, manganese chloride aqueous solution, ferric chloride in aqueous solution, magnesium chloride brine, calcium chloride water, aqueous sodium persulfate solution, manganese sulfate water
The not volatile salting liquid such as solution, potassium sulfate solution, potassium hydroxide aqueous solution, sodium hydrate aqueous solution etc. be not volatile
Aqueous slkali, dilute sulfuric acid aqueous solution etc. are not easy one of the acid solution that volatilizees.
The volatilize volume of acid solution of aqueous solution described in step 3), salting liquid, aqueous slkali or be not easy is 0.5~10mL.
Compared with existing other technologies, the present invention has the advantage that
1. graphene oxide vapor hydrothermal reduction technology of the invention is using high-temperature vapor as reducing agent, compared to
A variety of reducing agents such as hydrazine hydrate, Dimethylhydrazine, hydroquinone, sodium borohydride, liquid hydrazine, hydrogen iodide, sodium hydrogensulfite, more inexpensively,
Cleanliness without any pollution.
2. graphene oxide vapor hydrothermal reduction technology of the invention can obtain C/O than high under conditions of 150 DEG C
Up to the graphene aerogel of 4.65:1, compared to the high-temperature calcination reduction method for needing crosslinking agent and protective gas, it is safer just
Victory, cheap and low energy consumption.
3. redox graphene aeroge prepared by the present invention, during vapor hydrothermal reduction volume almost without
It shrinks, compared to the redox graphene aeroge that common liq hydro-thermal method is prepared, finished product aeroge volume is big and shape
Looks are more controllable.
Graphite oxide is prepared first with freeze-drying method from graphene oxide aqueous dispersions are prepared in the present invention
Then alkene aeroge restores to obtain redox graphene aeroge, the system of convenient and efficient low energy consumption by vapor hydro-thermal method
For redox graphene aeroge.
The equipment that the method for the present invention for preparing redox graphene aeroge uses is simple, mild condition, used
Chemical reagent is cheap and easy to get.The density of aeroge can be easily adjusted by the density of the colloidal solution of freezing.Airsetting
The shape of the volume and shape of glue high temperature-resistant vessel used when can be by the volume and freezing of the colloidal solution of freezing is convenient
It is adjusted.The redox graphene aeroge of preparation presents microcosmic three-dimensional porous structure, the average pore size of hole
It is 40~120 μm, the average length of hole wall skeleton structure is 25~95 μm, and average diameter is 1.4~9.6 μm.Present invention preparation
Graphene aerogel will be with important application prospects in fields such as capacitor, catalysis, biosensor, lithium ion batteries.
Detailed description of the invention
Fig. 1: the digital phase of different volumes, redox graphene aeroge of different shapes that embodiment 1 is prepared
Machine photo；(a) figure is the digital camera photo for the redox graphene aeroge being prepared using 5mL beaker as mold, (b)
Figure is the number for the redox graphene aeroge being prepared using the cuboid quartz boat of 3.5 × 3.5 × 2.5cm as mold
Camera photos, (c) figure is the digital camera photo for the redox graphene aeroge being prepared using 5mL test tube as mold.
Fig. 2: the electron scanning micrograph for the redox graphene aeroge that embodiment 1 is prepared；
Fig. 3: the Raman of graphite oxide aerogel and redox graphene aeroge that embodiment 1 is prepared
Spectrogram；
Fig. 4: graphite oxide aerogel (a) that embodiment 1 is prepared and redox graphene aeroge (b)
Carbon x-ray photoelectron spectroscopy figure；
Fig. 5: the redox graphene aeroge that embodiment 1 is prepared is to n-hexane, hexamethylene, dimethylbenzene and machine
The adsorption efficiency statistical chart of oil；
Fig. 6: the digital camera photo (a) and scanning electron for the redox graphene aeroge that embodiment 2 is prepared
Microscope photo (b).
Specific embodiment
More detailed description is done to technical solution of the present invention with specific embodiment below, but the example is not constituted to this
The limitation of invention.
Wherein, the graphene oxide aqueous dispersions in embodiment 1-6 are made by the Hummers method of improvement, specific side
Method is as follows:
1) 1g graphite powder and 13.5mL concentrated phosphoric acid (analyzing pure, mass fraction 85%) are added to (analysis of the 120mL concentrated sulfuric acid
It is pure, mass fraction 98%) in.For the sake of security, this mixture is placed in the beaker of 1000mL and carries out in draught cupboard
Experiment；
2) while keeping being vigorously stirred, 6g potassium permanganate is slowly added in above-mentioned suspension, the speed of charging is controlled
It spends (8-10 per second), the duration that feeds is in 45min or so；
3) after adding potassium permanganate, two apertures is pricked by beaker ParafilmTM, and with tweezers, continue to be vigorously stirred；
4) persistently stir 10min after, by the mixture in 50 DEG C of oil baths heating stirring 12h.With the progress of reaction, mix
Object gradually retrogradation is closed, and has a small amount of gas to emerge；
5) it after completion of the reaction, is kept stirring, is down to room temperature to temperature of reaction system, 500mL ice cube is slowly added into
It states in mixture.After ice melting, suspension is in blackish green, lasting stirring；
6) remaining potassium permanganate and manganese dioxide reduction are become manganese sulfate by the hydrogen peroxide for being slowly added to 30wt.%,
Until being generated without bubble.After the processing of hydrogen peroxide, suspension becomes glassy yellow, pours out supernatant after standing sedimentation；
7) hydrochloric acid of 10vol.% is added into mixture, supernatant is poured out after standing sedimentation, is repeated 3 times；Add 1
Supernatant is poured out after standing sedimentation, after being repeated 3 times, obtained graphene oxide is transferred to bag filter by the deionized water of L
In, it dialyses to neutrality, it is further purified；
8) graphene oxide is diluted to a certain concentration (2~10mg mL-1), ultrasonic 5h disperses to form graphene
Oxide aqueous dispersions；
9) above-mentioned graphene oxide aqueous dispersions are transferred in centrifuge tube, are centrifuged 30min under 4000rpm revolving speed,
Precipitating is removed, graphene oxide aqueous dispersions, 1~9mg of concentration mL are obtained-1, can be smaller than the concentration in step 8).
Embodiment 1
1) preparation of graphene oxide aqueous dispersions:
By graphene oxide aqueous dispersions made from the above method under the conditions of 60 DEG C rotary evaporation, graphene is aoxidized
Object aqueous dispersions are concentrated into 11.0mg mL-1Concentration, it is stand-by after ultrasonic disperse.
2) preparation of graphene oxide aeroge:
The graphene oxide aqueous dispersions that step 1) is prepared are diluted with water to 6mg/mL concentration, take 3mL above-mentioned
Dilution is added in 5mL beaker, and 3mL dilution is separately taken to be added in 5mL test tube, then take 30mL dilution be added to 3.5 ×
In the cuboid quartz molds of 3.5 × 2.5cm, 12h is freezed under conditions of -20 DEG C, is then put into the sample of freezing very
- 50 DEG C of freeze-drying 10h in vacuum freecing-dry machine, so that the graphene oxide gas of three kinds of browns of different shapes be prepared
Gel；
3) preparation of redox graphene aeroge:
The graphene oxide aeroge that step 2) obtains is placed in 500mL polytetrafluoroethylene (PTFE) high pressure together with vessel
1mL deionized water, heating are added in gap in reaction kettle, and between high temperature-resistant vessel and polytetrafluoroethylene (PTFE) autoclave
To 150 DEG C of progress vapor hydro-thermal reaction 10h, sample is taken out after the reaction was completed, and room temperature in vacuo is dry and demoulds, and obtains black
Redox graphene aeroge, product density 3.77mg/cm3。
Attached drawing 1 is preparation-obtained different volumes, redox graphene aeroge of different shapes in the present embodiment
Digital camera photo.As shown, (a) figure is volume to be prepared by mold of 5mL beaker as 3.0cm3, quality be
The cylindric redox graphene aeroge of 11.3mg, (b) figure is using the cuboid quartz boat of 3.5 × 3.5 × 2.5cm as mould
It is 30.6cm that volume, which is prepared, in tool3, quality be 115.5mg cuboid redox graphene aeroge, (c) figure be with
5mL test tube is that volume is prepared is 3.0cm to mold3, quality be 11.4mg strip redox graphene aeroge.
Attached drawing 2 is the cylindric redox graphene aeroge being prepared in the present embodiment by mold of 5mL beaker
Electron scanning micrograph.Three-dimensional porous structure, the average pore size of hole are all presented in very big range as shown in the figure
It is 65 μm, the average length of hole wall skeleton structure is 25 μm, and average diameter is 4.2 μm.
Attached drawing 3 is preparation-obtained graphite oxide aerogel and redox graphene aeroge in the present embodiment
Raman spectrogram.Characteristic peak (peak D and the G of graphite oxide aerogel and redox graphene aeroge as shown in the figure
Peak) it is all high-visible, and peak value ratio (ID/IG) by 0.95 1.08 are increased to, illustrate that graphite oxide aerogel has been reduced
As redox graphene aeroge.
Attached drawing 4 is preparation-obtained graphite oxide aerogel (a) and redox graphene gas in the present embodiment
The carbon x-ray photoelectron spectroscopy figure of gel (b).As shown, abscissa is electron binding energy (eV), ordinate is opposite
Intensity, wherein the peak at 284.5eV represents C=C key, the peak at 285.6eV represents C-C key, the peak at 286.4eV represents C-
The peak that peak at O key, 286.4eV represents C=O key, the peak at 287.02eV represents at C-O-C key and 288.6eV represents O=
C-O key.In Fig. 4 a, there is the peak of a large area at 287.02eV in graphite oxide aerogel, 286.4eV, 286.4eV,
Also there is the peak of small area at 288.6eV, illustrate to contain in graphite oxide aerogel containing a large amount of C-O-C key and a small amount of other
Oxygen functional group, and in Fig. 4 b, peak all concentrates at 284.5eV, and the intensity at other peaks is greatly lowered, and illustrates by 150 DEG C
In the redox graphene aeroge sample obtained after vapor hydrothermal reduction, oxygen-containing functional group is greatly lowered, oxygen reduction
The reducing degree of graphite alkene aeroge is very high.The C/O ratio that the aeroge is calculated is 4.65:1.
Attached drawing 5 is preparation-obtained redox graphene aeroge in the present embodiment to n-hexane, hexamethylene, diformazan
The adsorption efficiency statistical chart of benzene and machine oil.As shown, redox graphene aeroge is to n-hexane, hexamethylene, diformazan
The adsorption effect of benzene and machine oil is respectively 39.46,42.99,49.29 and 54.78 times of redox graphene aeroge self weight.
Embodiment 2 (high temperature)
Such as each step operation of embodiment 1, the difference is that the temperature of vapor hydro-thermal reaction is in the step 3) of embodiment 1
150 DEG C, the time is 10h；And the temperature of vapor hydro-thermal reaction is 200 DEG C in embodiment 2, the time is 10h.Further use phase
With the volume of redox graphene aeroge that is prepared using 5mL beaker as mold of method be 2.4cm3, quality is
8.2mg, density are 3.40mg/cm3, the C/O ratio of the aeroge is 3.56:1.
Attached drawing 6 be the present embodiment in preparation-obtained redox graphene aeroge digital camera photo (a) and
Electron scanning micrograph (b).As shown, (a) figure is volume to be prepared by mold of 5mL beaker as 2.4cm3, matter
Amount is the cylindric redox graphene aeroge of 8.2mg, and (b) figure all presents three-dimensional porous structure in very big range,
The average pore size of hole is 120 μm, and the average length of hole wall skeleton structure is 95 μm, and average diameter is 9.6 μm.
Embodiment 3 (low temperature)
Such as each step operation of embodiment 1, the difference is that the temperature of vapor hydro-thermal reaction is in the step 3) of embodiment 1
150 DEG C, the time is 10h；And the temperature of vapor hydro-thermal reaction is 100 DEG C in embodiment 3, the time is 10h.Further use phase
With the volume of redox graphene aeroge that is prepared using 5mL beaker as mold of method be 3.12cm3, quality is
16.5mg, density are 5.29mg/cm3, the C/O ratio of the aeroge is 1.27:1.
Embodiment 4 (time)
Such as each step operation of embodiment 1, the difference is that the temperature of vapor hydro-thermal reaction is in the step 3) of embodiment 1
150 DEG C, the time is 10h；And the temperature of vapor hydro-thermal reaction is 150 DEG C in embodiment 4, the time is 3h.Using 5mL beaker as mould
The volume for having the redox graphene aeroge being prepared is 3.016cm3, quality 12.8mg, density is 4.2mg/cm3,
The C/O ratio of the aeroge is 2.27:1.
Embodiment 5 (concentration)
Such as each step operation of embodiment 1, the difference is that graphene oxide aqueous dispersions are dilute in the step 2) of embodiment 1
Release 6mg/mL；And after graphene oxide aqueous dispersions are concentrated by rotary evaporation and are used further to after 15mg/mL in embodiment 5
Continuous experiment.The body for the redox graphene aeroge for further using identical method to be prepared using 5mL beaker as mold
Product is 3.21cm3, quality 29.2mg, density is 9.09mg/cm3, the C/O ratio of the aeroge is 1.99:1.
Embodiment 6 (aqueous slkali)
Such as each step operation of embodiment 1, the difference is that in high temperature-resistant vessel and polytetrafluoroethyl-ne in the step 3) of embodiment 1
1mL deionized water is added in gap between alkene autoclave；And it is high in high temperature-resistant vessel and polytetrafluoroethylene (PTFE) in embodiment 6
Press the KOH aqueous solution that 1mL, 18mg/mL are added in the gap between reaction kettle.Further use identical method with 5mL beaker
The volume for the redox graphene aeroge being prepared for mold is 3.05cm3, quality 11.5mg, density is
3.77mg/cm3, the C/O ratio of the aeroge is 3.92:1.
Claims (7)
1. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge, its step are as follows:
1) preparation of graphene oxide aqueous dispersions:
Graphene oxide aqueous dispersions are prepared with the Hummers method of improvement；
2) preparation of graphene oxide aeroge:
The graphene oxide aqueous dispersions that step 1) is prepared first are concentrated into 5~20mg/mL concentration, then are diluted with water to
Dilution, is then placed in vessel and freezes by 3~10mg/mL concentration, and the sample of freezing is then carried out vacuum refrigeration again
It is dry, so that the graphene oxide aeroge of brown be prepared；
3) preparation of redox graphene aeroge:
The graphene oxide aeroge that step 2) obtains is placed in polytetrafluoroethylene (PTFE) autoclave together with vessel,
And in the gap between high temperature-resistant vessel and polytetrafluoroethylene (PTFE) autoclave be added aqueous solution, not volatile salting liquid,
Not volatile aqueous slkali or not volatile acid solution, heating carry out vapor hydro-thermal reaction, take out sample after the reaction was completed,
Room temperature in vacuo is dry and demoulds, and obtains the redox graphene aeroge of black.
2. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge as described in claim 1, special
Sign is: the temperature of freezing described in step 2) is -20 DEG C~-196 DEG C, and the time of freezing is 0.5~20 hour.
3. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge as described in claim 1, special
Sign is: the temperature of vacuum freeze drying described in step 2) is -50~-80 DEG C, and the time of vacuum freeze drying is 6~48 small
When.
4. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge as described in claim 1, special
Sign is: the temperature of hydro-thermal reaction described in step 3) is 100~250 DEG C, and the time of hydro-thermal reaction is 3~12h.
5. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge as described in claim 1, special
Sign is: aqueous solution described in step 3) is deionized water, tap water or river water, and not volatile salting liquid is aqueous sodium chloride
Liquid, potassium chloride solution, manganese chloride aqueous solution, ferric chloride in aqueous solution, magnesium chloride brine, calcium chloride water, sodium sulphate water
Solution, manganese sulfate solution or potassium sulfate solution, not volatile aqueous slkali are potassium hydroxide aqueous solution or sodium hydroxide water
Solution, not volatile acid solution are dilute sulfuric acid aqueous solution.
6. a kind of method that vapor hydrothermal reduction prepares redox graphene aeroge as described in claim 1, special
Sign is: aqueous solution described in step 3), not volatile salting liquid, not volatile aqueous slkali or not volatile acid solution
Volume be 0.5~10mL.
7. a kind of redox graphene aeroge, it is characterised in that: be the method as described in claim 1~6 any one
It is prepared.
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| CN112354491A (en) * | 2020-10-27 | 2021-02-12 | 浙江工业大学 | Carbon-nitrogen double-defect optimized three-dimensional honeycomb aerogel and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571061A (en) * | 2019-08-14 | 2019-12-13 | 上海应用技术大学 | Preparation method of graphene @ CoAl-LDH composite electrode material |
| CN112354491A (en) * | 2020-10-27 | 2021-02-12 | 浙江工业大学 | Carbon-nitrogen double-defect optimized three-dimensional honeycomb aerogel and preparation method and application thereof |
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| CN112430094A (en) * | 2020-11-25 | 2021-03-02 | 中国科学院上海硅酸盐研究所 | Macrostructure ordered graphene aerogel and preparation method thereof |
| CN116239106A (en) * | 2023-02-16 | 2023-06-09 | 广东轻工职业技术学院 | Method for preparing high-heat-conductivity reduced graphene oxide aerogel by microwave assistance |
| CN118651853A (en) * | 2024-08-16 | 2024-09-17 | 天津市职业大学 | Electrochemical auxiliary method for preparing graphene-like graphite material |
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