CN105523553B - It is a kind of suddenly to freeze the method that unimolecule water expansion prepares Graphene by single cold end - Google Patents
It is a kind of suddenly to freeze the method that unimolecule water expansion prepares Graphene by single cold end Download PDFInfo
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Abstract
Suddenly freeze the method that unimolecule water expansion prepares Graphene by single cold end the invention discloses a kind of, block expanded graphite is fully immersed in deionized water, the hydrogen bond interrupted between hydrone is obtained by low-frequency oscillation, low frequency electromagnetic oscillation is produced to interrupt the hydrogen bond between hydrone by low-frequency resonance instrument, obtain activated water molecule, reduce the size of water clusters, hydrone and polar additive molecule is set to be freely accessible to graphite layers, then single cold end is used, freezing graphite and water, water is frozen into ice in graphite layers, volume increase, increase graphite layers away from.Finally, sheared by mechanical machine and peeled off, aquatic output graphene product is evaporated after stripping.The present invention prepares Graphene using deionization and a small amount of additive, avoid the use of toxicity organic molecule, and the program physics peels off Graphene at low temperature, reducing the secondary defect and this programme of Graphene reduces the pollution of other impurities element, environmental protection, is adapted to large-scale production.
Description
Technical field
The present invention relates to technical field of nanometer material preparation, more particularly to a kind of by single cold end, suddenly jelly unimolecule water is swollen
The swollen method for preparing Graphene.
Background technology
Graphene has the advantages that intrinsic mobility is high, specific surface area is big, Young's modulus is high and fracture strength is big, be lithium from
The ideal chose of conducting host materials in sub- battery, ultracapacitor.The extensive Graphene for preparing stable existence is stone
The precondition of black alkene industrialization.At present, the preparation method of Graphene mainly has, mechanical stripping method, epitaxial growth method, oxidation stone
The methods such as black reducing process, chemical vapor deposition.Because the preparation process of graphite oxide reducing process is relatively easy, it is big by researcher
The use of amount.But the defect and oxide group of the Graphene synthesized by the method are more, it is limited in terms of electronic device
Using.Now, liquid phase stripping method has also obtained researchers and has greatly paid close attention to, and it is simple also to have benefited from preparation process, can largely give birth to
Produce and the Graphene quality of synthesis is higher, can be used for the fields such as electronic device, become a kind of method of Worth Expecting.But
Use organic molecule as organic solvent due to a large amount of, with potential toxicity and synthesis complexity, existed and be difficult to remove
The problem of residual solvent.
In the prior art, China Patent Publication No. 103623741A provides a kind of graphene dispersion agent and remover, by naphthalene
Tetramethyl pyromellitic imide unit, three parts of anionic group and alkyl chain constitute.Using the graphite dispersing agent by ultrasound
, not by the process of oxidationreduction, defect content is low, and preparation cost is low for Graphene prepared by method.Although the dispersant is
It is water miscible, but naphthalenetetracarbacidic acidic dicarboxylic anhydride unit is still present, and expensive raw material price, cost is still very high.
China Patent Publication No. 103771400A provides one kind and prepares graphite using pyrenyl benzoic acid polyethers fat parents' reagent
The method of alkene dispersion liquid, with poly glycol monomethyl ether, p-aminobenzoic acid and 1- pyrene boric acid as raw material, is obtained by esterification
To the p-aminobenzoic acid polyether acid fat of hydrophilic long-chain, the HBr with 1- pyrene acid reactions is re-introduced into, prepares 3,5- dibromos
For benzoic acid poly glycol monomethyl ether fat, then double property are synthesized with 1- pyrene acid reactions again（Hydrophilic and oleophilic）Graphite peel off
Agent；This compound and Graphene are dissolved in H2In O/EtOH solution, ultrasound twice is carried out, after stewing process, then through centrifugation
The graphene dispersing solution stablized.The present invention need not carry out redox to Graphene, therefore to the destruction of graphene-structured
Property it is minimum, the unique conduction of Graphene and heat conductivility can be given full play to；The dispersion liquid of preparation has good water phase stability,
For Graphene provides an effective approach in the application of field of compound material.However, still using pyrenyl benzene in the method
Formic acid polyethers fat parents reagent is as important source material, and environmental pollution is serious, reclaims complicated, costly.
In sum, now in existing method also without a kind of pollution-free, good stability water miscible Graphene stripping
From method.
The content of the invention
Fully be immersed in deionized water block expanded graphite by the present invention, is obtained by low-frequency oscillation between interrupting hydrone
Hydrogen bond, produce low frequency electromagnetic oscillation to interrupt hydrogen bond between hydrone by low-frequency resonance instrument, obtain activated water molecule, reduce water
The size of micel, makes hydrone and polar additive molecule be freely accessible to graphite layers, then uses single cold end, freezes graphite
And water, water is frozen into ice in graphite layers, volume increase, increase graphite layers away from.Finally, sheared by mechanical machine and peeled off, stripping
From the rear aquatic output graphene product of evaporation.
The present invention provides a kind of by the single cold end method that suddenly jelly unimolecule water expansion prepares Graphene, and its feature exists
In the described method comprises the following steps：
A. using block expanded graphite as raw material, the raw material and polar additive are placed in equipped with the stainless of deionized water
In steel container, the raw material is 1 with the mass ratio of the polar additive, the deionized water three：0.01~0.2：10 ~ 25,
Stirring mixed solution to raw material is uniformly distributed, and low frequency electromagnetic oscillation is produced by low-frequency resonance instrument, reduces the size of water clusters,
Hydrone and the polar additive is freely accessible to graphite layers, be stirred continuously during low frequency electromagnetic oscillation；
B. lowered the temperature rapidly by the one end to the container, solidify the deionized water in the container, obtain low-temperature solid
State composite graphite material, with screw extruder or low temperature solid-state composite graphite material described in Counter-impact flow pulverizer mechanical stripping
Material, obtains mechanical stripping product；
C. under conditions of protective gas is passed through, the mechanical stripping product is warming up to 200~300 DEG C, makes deionization
Water vapor, obtains Graphene after cooling.
Preferably, the polar additive be piece footpath size 20 ~ 80 nm graphene oxide quantum dot or with phenyl ring,
Naphthalene nucleus or pyridine ring are main body rack, the organic molecule comprising one or more hydroxyls or amino and carboxyl.
Preferably, the frequency of the low frequency electromagnetic oscillation is 7.2 ~ 8.2 Hz.
Preferably, temperature is used to lower the temperature to the container for -200 ~ -100 DEG C of cold head, cooling rate is 10 ~ 50
℃/s。
Preferably, the screw speed of the screw extruder is 100 ~ 600 revs/min.
Preferably, the air velocity of the Counter-impact flow pulverizer is 2.5 ~ 5 Mach.
Said one or multiple technical schemes in the embodiment of the present application, at least imitate with following one or more technology
Really：
1st, Graphene is prepared using deionization and a small amount of additive in the program, it is to avoid making for toxicity organic molecule
With, and the program at low temperature physics peel off Graphene, reduce Graphene secondary defect.
2nd, the program freezes the water of graphite layers using single cold end, and solidifying hydrone has directionality, it is to avoid
The homogeneous nucleation growth process that even refrigerating process is caused, the volume orientation for causing water cure expands, and struts graphite layers distance,
Interrupt Van der Waals key.
3rd, the deionized water that the program is used can be recycled, and process is simple is with low cost, reduce other impurities unit
The pollution of element, environmental protection, suitable large-scale production.
Brief description of the drawings
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram.
Specific embodiment
By specific embodiment, the present invention is described in further detail, but this should not be interpreted as into model of the invention
Enclose and be only limitted to following example.In the case where above method thought of the present invention is not departed from, according to ordinary skill knowledge
The various replacements or change made with customary means, should be included in the scope of the present invention.
Embodiment one
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 20nm by 1kg bulk expanded graphites and 15g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 10kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 7.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container, just
Cube container, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in the present embodiment
In, selection hydrostatic column is the device for holding raw material, freezing end be arranged on cylindrical chamber rounded bottom or circular top be compared with
Good scheme, certainly, those skilled in the art freezing end can also be arranged on a certain region of cylindrical cylinder as needed.
Freezing end temperature is -200 DEG C of copper cold head, and hydrostatic column is lowered the temperature by 10 DEG C/s of cooling rate, in making container
Deionized water solidification, so due to thermograde, close to one end of copper cold head graphite layers deionized water solidification, body
Product increase, the spacing of graphite layers increases because deionized water solidifies, and increases over time, due to thermograde, away from cold
The raw material for freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains whole low temperature
Solid union graphite material.Next, it is 100 revs/min to set screw speed, with low temperature described in screw extruder mechanical stripping
Solid union graphite material, obtains mechanical stripping product.Mechanical stripping product is taken out, N is being passed through2Under conditions of, by machinery
Peel off product and be warming up to 200 DEG C, vaporize deionized water, Graphene is obtained after cooling.
Embodiment two
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 70nm by 1kg bulk expanded graphites and 200g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 20kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 7.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container, just
Cube container, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in the present embodiment
In, selection hydrostatic column is the device for holding raw material, freezing end be arranged on cylindrical chamber rounded bottom or circular top be compared with
Good scheme, certainly, those skilled in the art freezing end can also be arranged on a certain region of cylindrical cylinder as needed.
Freezing end temperature is -200 DEG C of copper cold head, and hydrostatic column is lowered the temperature by 10 DEG C/s of cooling rate, in making container
Deionized water solidification, so due to thermograde, close to one end of copper cold head graphite layers deionized water solidification, body
Product increase, the spacing of graphite layers increases because deionized water solidifies, and increases over time, due to thermograde, away from cold
The raw material for freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains whole low temperature
Solid union graphite material.Next, it is 100 revs/min to set screw speed, with low temperature described in screw extruder mechanical stripping
Solid union graphite material, obtains mechanical stripping product.Mechanical stripping product is taken out, N is being passed through2Under conditions of, by machinery
Peel off product and be warming up to 200 DEG C, vaporize deionized water, Graphene is obtained after cooling.
Embodiment three
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 70nm by 1kg bulk expanded graphites and 200g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 20kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 8.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container,
Square describes device, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in this implementation
In example, selection length：It is wide：A height of 3:2:1 cuboid container is the device for holding raw material, and freezing end is arranged on cuboid and describes
Face where the width height of device, certainly, freezing end can also be arranged on cuboid container by those skilled in the art as needed
Other faces.Freezing end temperature is -200 DEG C of copper cold head, and cuboid container is dropped by 10 DEG C/s of cooling rate
Temperature, solidifies the deionized water in container, so due to thermograde, close to one end of copper cold head graphite layers go from
Sub- water-setting is consolidated, volume increase, and the spacing of graphite layers increases due to deionized water solidification, increases over time, due to temperature
Gradient, the raw material away from freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains
Obtain whole low temperature solid-state composite graphite material.Next, it is 100 revs/min to set screw speed, shelled with screw extruder machinery
From the low temperature solid-state composite graphite material, mechanical stripping product is obtained.Mechanical stripping product is taken out, N is being passed through2Condition
Under, mechanical stripping product is warming up to 200 DEG C, deionized water is vaporized, Graphene is obtained after cooling.
Example IV
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 70nm by 1kg bulk expanded graphites and 200g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 20kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 8.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container,
Square describes device, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in this implementation
In example, selection length：It is wide：A height of 3:2:1 cuboid container is the device for holding raw material, and freezing end is arranged on cuboid and describes
Face where the width height of device, certainly, freezing end can also be arranged on cuboid container by those skilled in the art as needed
Other faces.Freezing end temperature is -150 DEG C of copper cold head, and cuboid container is dropped by 50 DEG C/s of cooling rate
Temperature, solidifies the deionized water in container, so due to thermograde, close to one end of copper cold head graphite layers go from
Sub- water-setting is consolidated, volume increase, and the spacing of graphite layers increases due to deionized water solidification, increases over time, due to temperature
Gradient, the raw material away from freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains
Obtain whole low temperature solid-state composite graphite material.Next, it is 100 revs/min to set screw speed, shelled with screw extruder machinery
From the low temperature solid-state composite graphite material, mechanical stripping product is obtained.Mechanical stripping product is taken out, N is being passed through2Condition
Under, mechanical stripping product is warming up to 200 DEG C, deionized water is vaporized, Graphene is obtained after cooling.
Embodiment five
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 70nm by 1kg bulk expanded graphites and 200g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 20kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 8.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container,
Square describes device, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in this implementation
In example, selection length：It is wide：A height of 3:2:1 cuboid container is the device for holding raw material, and freezing end is arranged on cuboid and describes
Face where the width height of device, certainly, freezing end can also be arranged on cuboid container by those skilled in the art as needed
Other faces.Freezing end temperature is -150 DEG C of copper cold head, and cuboid container is dropped by 50 DEG C/s of cooling rate
Temperature, solidifies the deionized water in container, so due to thermograde, close to one end of copper cold head graphite layers go from
Sub- water-setting is consolidated, volume increase, and the spacing of graphite layers increases due to deionized water solidification, increases over time, due to temperature
Gradient, the raw material away from freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains
Obtain whole low temperature solid-state composite graphite material.Next, it is 100 revs/min to set screw speed, shelled with screw extruder machinery
From the low temperature solid-state composite graphite material, mechanical stripping product is obtained.Mechanical stripping product is taken out, N is being passed through2Condition
Under, mechanical stripping product is warming up to 200 DEG C, deionized water is vaporized, Graphene is obtained after cooling.
Embodiment six
Fig. 1 is a kind of method original that Graphene is prepared by the urgency jelly unimolecule water expansion of single cold end in the embodiment of the present application
Reason schematic diagram, 1 is container, 2 ice being solidify to form for hydrone, and 3 is graphite synusia, and 4 is freezing end.Specific implementation steps are such as
Under：
Block expanded graphite 1kg is taken as raw material, is the oxidation of 70nm by 1kg bulk expanded graphites and 200g pieces footpath size
Graphene quantum dot is placed in rustless steel containers of the 20kg equipped with deionized water, is stirred continuously mixed solution to raw material and is uniformly divided
Cloth, the frequency by electromagnetic viscosimeter is that the low-frequency resonance instrument of 8.2 Hz is produced between low frequency electromagnetic oscillation interrupts deionized water hydrone
Hydrogen bond, deionized water is activated, obtain activated water molecule, and then reduce deionized water water clusters size, further allow
Hydrone is easily carried graphene oxide quantum dot and is freely accessible to graphite layers, is stirred continuously during low frequency electromagnetic oscillation.
Next, lowered the temperature rapidly by the one end to container, in embodiment, container can be hydrostatic column, cuboid container,
Square describes device, does not just illustrate one by one herein.Shape according to container sets the vessel faces where freezing end, in this implementation
In example, selection length：It is wide：A height of 3:2:1 cuboid container is the device for holding raw material, and freezing end is arranged on cuboid and describes
Face where the width height of device, certainly, freezing end can also be arranged on cuboid container by those skilled in the art as needed
Other faces.Freezing end temperature is -150 DEG C of copper cold head, and cuboid container is dropped by 50 DEG C/s of cooling rate
Temperature, solidifies the deionized water in container, so due to thermograde, close to one end of copper cold head graphite layers go from
Sub- water-setting is consolidated, volume increase, and the spacing of graphite layers increases due to deionized water solidification, increases over time, due to temperature
Gradient, the raw material away from freezing end also gradually solidifies, and having directive directional solidification makes graphite slowly be softened in an orderly manner, obtains
Obtain whole low temperature solid-state composite graphite material.Next, the air velocity for setting Counter-impact flow pulverizer is 2.5 Mach, use
Counter-impact flow pulverizer mechanical stripping low temperature solid-state composite graphite material, obtains mechanical stripping product.By mechanical stripping product
Take out, be passed through N2Under conditions of, mechanical stripping product is warming up to 200 DEG C, deionized water is vaporized, graphite is obtained after cooling
Alkene.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (4)
1. it is a kind of suddenly to freeze the method that unimolecule water expansion prepares Graphene by single cold end, it is characterised in that methods described bag
Include following steps：
A. using block expanded graphite as raw material, the raw material and polar additive are placed in the stainless steel equipped with deionized water and are held
In device, the raw material is 1 with the mass ratio of the polar additive, the deionized water three：0 .01~0 .2：10 ~ 25, stir
Mix mixed solution to raw material to be uniformly distributed, low frequency electromagnetic oscillation is produced by low-frequency resonance instrument, reduce the size of water clusters, make
Hydrone and the polar additive are freely accessible to graphite layers, are stirred continuously during low frequency electromagnetic oscillation；Wherein, it is described
The frequency of low frequency electromagnetic oscillation is 7 .2 ~ 8 .2 Hz；
B. lowered the temperature rapidly by the one end to the container, solidify the deionized water in the container, obtained low temperature solid-state and answer
Graphite material is closed, with screw extruder or low temperature solid-state composite graphite material described in Counter-impact flow pulverizer mechanical stripping, is obtained
Obtain mechanical stripping product；Wherein, the cooling uses temperature to lower the temperature to the container for -200 ~ -100 DEG C of cold head, lowers the temperature
Speed is 10 ~ 50 DEG C/s；
The mechanical stripping product is warming up to 200~300 DEG C by c under conditions of protective gas is passed through, and makes deionized water
Vaporization, obtains Graphene after cooling.
2. according to claim 1 a kind of by the single cold end method that suddenly jelly unimolecule water expansion prepares Graphene, its
Be characterised by, the polar additive be piece footpath size 20 ~ 80 nm graphene oxide quantum dot or with phenyl ring, naphthalene nucleus or
Pyridine ring is main body rack, the organic molecule comprising one or more hydroxyls or amino and carboxyl.
3. according to claim 1 a kind of by the single cold end method that suddenly jelly unimolecule water expansion prepares Graphene, its
It is characterised by, the screw speed of the screw extruder is 100 ~ 600 revs/min.
4. according to claim 1 a kind of by the single cold end method that suddenly jelly unimolecule water expansion prepares Graphene, its
It is characterised by, the air velocity of the Counter-impact flow pulverizer is 2 .5 ~ 5 Mach.
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| CN107673335B (en) * | 2017-01-04 | 2019-03-05 | 柯良节 | Graphene preparation method based on the reaction of multiphase quantum self coupling |
| BR112023019738A2 (en) | 2021-05-04 | 2023-11-14 | Tmtp Labs Inc | METHOD AND APPARATUS FOR EXFOLIATING A GRAIN OF GRAPHITE |
| CN114455575A (en) * | 2022-01-28 | 2022-05-10 | 中安新材料(深圳)有限公司 | Graphene and preparation method and application thereof |
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| CN101143708A (en) * | 2007-08-17 | 2008-03-19 | 中国科学技术大学 | Method for preparing ultra-thin two-dimension graphite sheet |
| CN102786045A (en) * | 2012-07-27 | 2012-11-21 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing oxidized graphene |
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| CN104030283A (en) * | 2014-06-30 | 2014-09-10 | 上海交通大学 | Method based on graphene quantum dot peeling for obtaining two-dimensional material |
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| PL229934B1 (en) * | 2014-05-30 | 2018-09-28 | Instytut Tech Materialow Elektronicznych | Method for producing flaky graphene by way of direct exfoliation of graphite |
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| CN101143708A (en) * | 2007-08-17 | 2008-03-19 | 中国科学技术大学 | Method for preparing ultra-thin two-dimension graphite sheet |
| CN102786045A (en) * | 2012-07-27 | 2012-11-21 | 中国航空工业集团公司北京航空材料研究院 | Method for preparing oxidized graphene |
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