Patent
US 11,021,370A Low Cost and Fast Method to Massively Produce Graphene and Graphene Oxide With Carbon-Rich Natural Materials and the Use of the Same
Tingying Zeng
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1) (Cu rr ently Amended) A method for producing at least one of graphene and graphene oxide comprising the steps of: obtaining a quantity of carbon rich material in a solid state; mixing the carbon rich material with a solvent, a surfactant, and an additive, forming a mixture; conducting the mixture into a microwave reactor, the microwave reactor configured to provide microwave radiation to the mixture; directing a sufficient quantity of microwave radiation to the mixture in the microwave reactor to form at least one of a quantity of graphene and a quantity of graphene oxide; and separating the at least one of the formed quantity of graphene and quantity of graphene oxide from the solvent.
2) The method of claim 1 wherein the directing step comprises directing microwave radiation having an intensity of 150W to 3000W.
3) The method of claim 1 wherein the step of directing the microwave radiation to the mixture is performed for a time period of between approximately 1 second and approximately 60 minutes.
4) The method of claim 1 wherein the carbon rich material is at least one of graphite, acid-treated expandable graphite, coal slags, brown coal slags, and asphalt.
5) The method of claim 1 further comprising the step of adding a basic material before or after the mixing step, wherein the basic material is at least one of sodium hydroxide, potassium hydroxide, baking soda, sodium bicarbonate, urea, ammonium hydroxide, and salts that can be dissolved in water while maintaining pH value higher than 6.
6) The method of claim 1 wherein the surfactant is at least one of quaternary ammonium salts, cetrimonium bromide, polyatomic cations such as poly(diallyldimethylammonium chloride) (PDDA), organic ammonium cation, iminium salt, and polystyrene sulfonates.
7) The method of claim 1 wherein the solvent is at least one of salts of imidazolium, pyridinium salts, 1-butyl-3-methylimidazolium (BM I M)-based and 1-ethyl- 3-methylimidazolium (EM I M)- based ionic liquid, such as l -ethyl- 3 -methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, water, an alcohol, acetone, a ketone, dimethyl formamide (DMF), ethylene glycol (EG), DMSO, and their co-solvents.
8) The method of claim 1 wherein the additive is at least one of azodicarbonamide, a small molecules amine, ammonium hydroxide, urea, metal oxides, metal nanoparticles, KMn O 4, potassium fe rr ate, sodium fe rr ate, and peroxide.
9) The method of claim 1 wherein the step of mixing comprises grind-milling.
10) The method of claim 1 wherein the step of mixing comprises mixing with an ultrasonic mixer, the mixing with the ultrasonic mixer creating a mixture having a substantially uniform suspension.
11) The method of claim 1 further comprising the step of grinding the carbon rich material before the mixing step.
12) The method of claim 1 further comprising the step of forming carbon fibers from the separated graphene and graphene oxide.
13) The method of claim 1 wherein the directing step comprises directin g microwave radiation having an intensity of approximately 1500W.
14) The method of claim 1 wherein the step mixture is performed for a time period of approximately
15) The method of claim 1 wherein the step oxide from the solvent comprises draining the quantity of water. the water allowing the formed the solvent. of directing the microwave radiation to the 30 minutes. of separating the formed graphene and graphene components from the microwave reactor into a graphene and graphene oxide to separate from
Materials described outside the worked examples.
graphene
graphene oxide
carbon rich material
graphite
acid-treated expandable graphite
coal slags
brown coal slags
asphalt
sodium hydroxide
NaOH
potassium hydroxide
KOH
baking soda
NaHCO₃
urea
CH₄N₂O
ammonium hydroxide
NH₄OH
quaternary ammonium salts
cetrimonium bromide
poly(diallyldimethylammonium chloride)
organic ammonium cation
iminium salt
polystyrene sulfonates
salts of imidazolium
pyridinium salts
1-ethyl-3-methylimidazolium tetrafluoroborate
1-butyl-3-methylimidazolium hexafluorophosphate
water
H₂O
alcohol
acetone
C₃H₆O
dimethyl formamide
C₃H₇NO
ethylene glycol
C₂H₆O₂
DMSO
C₂H₆OS
azodicarbonamide
small molecules amine
metal oxides
metal nanoparticles
potassium permanganate
KMnO₄
potassium ferrate
K₂FeO₄
sodium ferrate
Na₂FeO₄
carbon fibers
MgO
ZnO
Fe₃O₄
MoS₂
WS₂
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 150–3000 W | — |
Duration | 1–3600 s | — |
— | 500–1500 W | — |
Duration | ≤ 10 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD AND DEVICE FOR PRODUCTION OF GRAPHENE OR GRAPHENE-LIKE MATERIALS
GRAPHENE-CONTAINING ELECTRODES
GRAPHENE COMPOSITIONS AND METHODS FOR PRODUCTION THEREOF
Stability of Planar Slits in Multilayer Graphite Crystals
GRAPHENE MATERIALS HAVING RANDOMLY DISTRIBUTED TWO-DIMENSIONAL STRUCTURAL DEFECTS
GRAPHENE OXIDE/POLYMER COMPOSITION FOR MANUFACTURING INNER LINERS AND INNER TUBES OF TIRES AND METHOD FOR PREPARING THE SAME
Production of Graphene and Nanoparticle Catalysts Supported on Graphene Using Laser Radiation
LOW FRICTION WEAR RESISTANT GRAPHENE FILMS
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Composite of Paracoccus denitrificans immobilized on modified graphene oxide and its preparation method and application
GRAPHITE OXIDE, GRAPHENE OXIDE OR GRAPHENE, ELECTRIC DEVICE USING THE SAME AND METHOD OF MANUFACTURING THE SAME, AND ELECTRODIALYSIS APPARATUS
HIGHLY OXIDIZED GRAPHENE OXIDE AND METHODS FOR PRODUCTION THEREOF
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1) (Cu rr ently Amended) A method for producing at least one of graphene and graphene oxide comprising the steps of: obtaining a quantity of carbon rich material in a solid state; mixing the carbon rich material with a solvent, a surfactant, and an additive, forming a mixture; conducting the mixture into a microwave reactor, the microwave reactor configured to provide microwave radiation to the mixture; directing a sufficient quantity of microwave radiation to the mixture in the microwave reactor to form at least one of a quantity of graphene and a quantity of graphene oxide; and separating the at least one of the formed quantity of graphene and quantity of graphene oxide from the solvent.
2) The method of claim 1 wherein the directing step comprises directing microwave radiation having an intensity of 150W to 3000W.
3) The method of claim 1 wherein the step of directing the microwave radiation to the mixture is performed for a time period of between approximately 1 second and approximately 60 minutes.
4) The method of claim 1 wherein the carbon rich material is at least one of graphite, acid-treated expandable graphite, coal slags, brown coal slags, and asphalt.
5) The method of claim 1 further comprising the step of adding a basic material before or after the mixing step, wherein the basic material is at least one of sodium hydroxide, potassium hydroxide, baking soda, sodium bicarbonate, urea, ammonium hydroxide, and salts that can be dissolved in water while maintaining pH value higher than 6.
6) The method of claim 1 wherein the surfactant is at least one of quaternary ammonium salts, cetrimonium bromide, polyatomic cations such as poly(diallyldimethylammonium chloride) (PDDA), organic ammonium cation, iminium salt, and polystyrene sulfonates.
7) The method of claim 1 wherein the solvent is at least one of salts of imidazolium, pyridinium salts, 1-butyl-3-methylimidazolium (BM I M)-based and 1-ethyl- 3-methylimidazolium (EM I M)- based ionic liquid, such as l -ethyl- 3 -methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, water, an alcohol, acetone, a ketone, dimethyl formamide (DMF), ethylene glycol (EG), DMSO, and their co-solvents.
8) The method of claim 1 wherein the additive is at least one of azodicarbonamide, a small molecules amine, ammonium hydroxide, urea, metal oxides, metal nanoparticles, KMn O 4, potassium fe rr ate, sodium fe rr ate, and peroxide.
9) The method of claim 1 wherein the step of mixing comprises grind-milling.
10) The method of claim 1 wherein the step of mixing comprises mixing with an ultrasonic mixer, the mixing with the ultrasonic mixer creating a mixture having a substantially uniform suspension.
11) The method of claim 1 further comprising the step of grinding the carbon rich material before the mixing step.
12) The method of claim 1 further comprising the step of forming carbon fibers from the separated graphene and graphene oxide.
13) The method of claim 1 wherein the directing step comprises directin g microwave radiation having an intensity of approximately 1500W.
14) The method of claim 1 wherein the step mixture is performed for a time period of approximately
15) The method of claim 1 wherein the step oxide from the solvent comprises draining the quantity of water. the water allowing the formed the solvent. of directing the microwave radiation to the 30 minutes. of separating the formed graphene and graphene components from the microwave reactor into a graphene and graphene oxide to separate from
Materials described outside the worked examples.
graphene
graphene oxide
carbon rich material
graphite
acid-treated expandable graphite
coal slags
brown coal slags
asphalt
sodium hydroxide
NaOH
potassium hydroxide
KOH
baking soda
NaHCO₃
urea
CH₄N₂O
ammonium hydroxide
NH₄OH
quaternary ammonium salts
cetrimonium bromide
poly(diallyldimethylammonium chloride)
organic ammonium cation
iminium salt
polystyrene sulfonates
salts of imidazolium
pyridinium salts
1-ethyl-3-methylimidazolium tetrafluoroborate
1-butyl-3-methylimidazolium hexafluorophosphate
water
H₂O
alcohol
acetone
C₃H₆O
dimethyl formamide
C₃H₇NO
ethylene glycol
C₂H₆O₂
DMSO
C₂H₆OS
azodicarbonamide
small molecules amine
metal oxides
metal nanoparticles
potassium permanganate
KMnO₄
potassium ferrate
K₂FeO₄
sodium ferrate
Na₂FeO₄
carbon fibers
MgO
ZnO
Fe₃O₄
MoS₂
WS₂
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 150–3000 W | — |
Duration | 1–3600 s | — |
— | 500–1500 W | — |
Duration | ≤ 10 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD AND DEVICE FOR PRODUCTION OF GRAPHENE OR GRAPHENE-LIKE MATERIALS
GRAPHENE-CONTAINING ELECTRODES
GRAPHENE COMPOSITIONS AND METHODS FOR PRODUCTION THEREOF
Stability of Planar Slits in Multilayer Graphite Crystals
GRAPHENE MATERIALS HAVING RANDOMLY DISTRIBUTED TWO-DIMENSIONAL STRUCTURAL DEFECTS
GRAPHENE OXIDE/POLYMER COMPOSITION FOR MANUFACTURING INNER LINERS AND INNER TUBES OF TIRES AND METHOD FOR PREPARING THE SAME
Production of Graphene and Nanoparticle Catalysts Supported on Graphene Using Laser Radiation
LOW FRICTION WEAR RESISTANT GRAPHENE FILMS
Synthesis of Fluorinated Graphene Oxide for Electrochemical Applications
Composite of Paracoccus denitrificans immobilized on modified graphene oxide and its preparation method and application
GRAPHITE OXIDE, GRAPHENE OXIDE OR GRAPHENE, ELECTRIC DEVICE USING THE SAME AND METHOD OF MANUFACTURING THE SAME, AND ELECTRODIALYSIS APPARATUS
HIGHLY OXIDIZED GRAPHENE OXIDE AND METHODS FOR PRODUCTION THEREOF
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1) (Cu rr ently Amended) A method for producing at least one of graphene and graphene oxide comprising the steps of: obtaining a quantity of carbon rich material in a solid state; mixing the carbon rich material with a solvent, a surfactant, and an additive, forming a mixture; conducting the mixture into a microwave reactor, the microwave reactor configured to provide microwave radiation to the mixture; directing a sufficient quantity of microwave radiation to the mixture in the microwave reactor to form at least one of a quantity of graphene and a quantity of graphene oxide; and separating the at least one of the formed quantity of graphene and quantity of graphene oxide from the solvent.
2) The method of claim 1 wherein the directing step comprises directing microwave radiation having an intensity of 150W to 3000W.
3) The method of claim 1 wherein the step of directing the microwave radiation to the mixture is performed for a time period of between approximately 1 second and approximately 60 minutes.
4) The method of claim 1 wherein the carbon rich material is at least one of graphite, acid-treated expandable graphite, coal slags, brown coal slags, and asphalt.
5) The method of claim 1 further comprising the step of adding a basic material before or after the mixing step, wherein the basic material is at least one of sodium hydroxide, potassium hydroxide, baking soda, sodium bicarbonate, urea, ammonium hydroxide, and salts that can be dissolved in water while maintaining pH value higher than 6.
6) The method of claim 1 wherein the surfactant is at least one of quaternary ammonium salts, cetrimonium bromide, polyatomic cations such as poly(diallyldimethylammonium chloride) (PDDA), organic ammonium cation, iminium salt, and polystyrene sulfonates.
7) The method of claim 1 wherein the solvent is at least one of salts of imidazolium, pyridinium salts, 1-butyl-3-methylimidazolium (BM I M)-based and 1-ethyl- 3-methylimidazolium (EM I M)- based ionic liquid, such as l -ethyl- 3 -methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, water, an alcohol, acetone, a ketone, dimethyl formamide (DMF), ethylene glycol (EG), DMSO, and their co-solvents.
8) The method of claim 1 wherein the additive is at least one of azodicarbonamide, a small molecules amine, ammonium hydroxide, urea, metal oxides, metal nanoparticles, KMn O 4, potassium fe rr ate, sodium fe rr ate, and peroxide.
9) The method of claim 1 wherein the step of mixing comprises grind-milling.
10) The method of claim 1 wherein the step of mixing comprises mixing with an ultrasonic mixer, the mixing with the ultrasonic mixer creating a mixture having a substantially uniform suspension.
11) The method of claim 1 further comprising the step of grinding the carbon rich material before the mixing step.
12) The method of claim 1 further comprising the step of forming carbon fibers from the separated graphene and graphene oxide.
13) The method of claim 1 wherein the directing step comprises directin g microwave radiation having an intensity of approximately 1500W.
14) The method of claim 1 wherein the step mixture is performed for a time period of approximately
15) The method of claim 1 wherein the step oxide from the solvent comprises draining the quantity of water. the water allowing the formed the solvent. of directing the microwave radiation to the 30 minutes. of separating the formed graphene and graphene components from the microwave reactor into a graphene and graphene oxide to separate from
Materials described outside the worked examples.
graphene
graphene oxide
carbon rich material
graphite
acid-treated expandable graphite
coal slags
brown coal slags
asphalt
sodium hydroxide
NaOH
potassium hydroxide
KOH
baking soda
NaHCO₃
urea
CH₄N₂O
ammonium hydroxide
NH₄OH
quaternary ammonium salts
cetrimonium bromide
poly(diallyldimethylammonium chloride)
organic ammonium cation
iminium salt
polystyrene sulfonates
salts of imidazolium
pyridinium salts
1-ethyl-3-methylimidazolium tetrafluoroborate
1-butyl-3-methylimidazolium hexafluorophosphate
water
H₂O
alcohol
acetone
C₃H₆O
dimethyl formamide
C₃H₇NO
ethylene glycol
C₂H₆O₂
DMSO
C₂H₆OS
azodicarbonamide
small molecules amine
metal oxides
metal nanoparticles
potassium permanganate
KMnO₄
potassium ferrate
K₂FeO₄
sodium ferrate
Na₂FeO₄
carbon fibers
MgO
ZnO
Fe₃O₄
MoS₂
WS₂
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 150–3000 W | — |
Duration | 1–3600 s | — |
— | 500–1500 W | — |
Duration | ≤ 10 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD AND DEVICE FOR PRODUCTION OF GRAPHENE OR GRAPHENE-LIKE MATERIALS
GRAPHENE-CONTAINING ELECTRODES
GRAPHENE COMPOSITIONS AND METHODS FOR PRODUCTION THEREOF
Stability of Planar Slits in Multilayer Graphite Crystals
GRAPHENE MATERIALS HAVING RANDOMLY DISTRIBUTED TWO-DIMENSIONAL STRUCTURAL DEFECTS
GRAPHENE OXIDE/POLYMER COMPOSITION FOR MANUFACTURING INNER LINERS AND INNER TUBES OF TIRES AND METHOD FOR PREPARING THE SAME
Production of Graphene and Nanoparticle Catalysts Supported on Graphene Using Laser Radiation
LOW FRICTION WEAR RESISTANT GRAPHENE FILMS
Synthesis of Fluorinated Graphene Oxide for Electrochemical Applications
Composite of Paracoccus denitrificans immobilized on modified graphene oxide and its preparation method and application
GRAPHITE OXIDE, GRAPHENE OXIDE OR GRAPHENE, ELECTRIC DEVICE USING THE SAME AND METHOD OF MANUFACTURING THE SAME, AND ELECTRODIALYSIS APPARATUS
HIGHLY OXIDIZED GRAPHENE OXIDE AND METHODS FOR PRODUCTION THEREOF
Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1) (Cu rr ently Amended) A method for producing at least one of graphene and graphene oxide comprising the steps of: obtaining a quantity of carbon rich material in a solid state; mixing the carbon rich material with a solvent, a surfactant, and an additive, forming a mixture; conducting the mixture into a microwave reactor, the microwave reactor configured to provide microwave radiation to the mixture; directing a sufficient quantity of microwave radiation to the mixture in the microwave reactor to form at least one of a quantity of graphene and a quantity of graphene oxide; and separating the at least one of the formed quantity of graphene and quantity of graphene oxide from the solvent.
2) The method of claim 1 wherein the directing step comprises directing microwave radiation having an intensity of 150W to 3000W.
3) The method of claim 1 wherein the step of directing the microwave radiation to the mixture is performed for a time period of between approximately 1 second and approximately 60 minutes.
4) The method of claim 1 wherein the carbon rich material is at least one of graphite, acid-treated expandable graphite, coal slags, brown coal slags, and asphalt.
5) The method of claim 1 further comprising the step of adding a basic material before or after the mixing step, wherein the basic material is at least one of sodium hydroxide, potassium hydroxide, baking soda, sodium bicarbonate, urea, ammonium hydroxide, and salts that can be dissolved in water while maintaining pH value higher than 6.
6) The method of claim 1 wherein the surfactant is at least one of quaternary ammonium salts, cetrimonium bromide, polyatomic cations such as poly(diallyldimethylammonium chloride) (PDDA), organic ammonium cation, iminium salt, and polystyrene sulfonates.
7) The method of claim 1 wherein the solvent is at least one of salts of imidazolium, pyridinium salts, 1-butyl-3-methylimidazolium (BM I M)-based and 1-ethyl- 3-methylimidazolium (EM I M)- based ionic liquid, such as l -ethyl- 3 -methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium hexafluorophosphate, water, an alcohol, acetone, a ketone, dimethyl formamide (DMF), ethylene glycol (EG), DMSO, and their co-solvents.
8) The method of claim 1 wherein the additive is at least one of azodicarbonamide, a small molecules amine, ammonium hydroxide, urea, metal oxides, metal nanoparticles, KMn O 4, potassium fe rr ate, sodium fe rr ate, and peroxide.
9) The method of claim 1 wherein the step of mixing comprises grind-milling.
10) The method of claim 1 wherein the step of mixing comprises mixing with an ultrasonic mixer, the mixing with the ultrasonic mixer creating a mixture having a substantially uniform suspension.
11) The method of claim 1 further comprising the step of grinding the carbon rich material before the mixing step.
12) The method of claim 1 further comprising the step of forming carbon fibers from the separated graphene and graphene oxide.
13) The method of claim 1 wherein the directing step comprises directin g microwave radiation having an intensity of approximately 1500W.
14) The method of claim 1 wherein the step mixture is performed for a time period of approximately
15) The method of claim 1 wherein the step oxide from the solvent comprises draining the quantity of water. the water allowing the formed the solvent. of directing the microwave radiation to the 30 minutes. of separating the formed graphene and graphene components from the microwave reactor into a graphene and graphene oxide to separate from
Materials described outside the worked examples.
graphene
graphene oxide
carbon rich material
graphite
acid-treated expandable graphite
coal slags
brown coal slags
asphalt
sodium hydroxide
NaOH
potassium hydroxide
KOH
baking soda
NaHCO₃
urea
CH₄N₂O
ammonium hydroxide
NH₄OH
quaternary ammonium salts
cetrimonium bromide
poly(diallyldimethylammonium chloride)
organic ammonium cation
iminium salt
polystyrene sulfonates
salts of imidazolium
pyridinium salts
1-ethyl-3-methylimidazolium tetrafluoroborate
1-butyl-3-methylimidazolium hexafluorophosphate
water
H₂O
alcohol
acetone
C₃H₆O
dimethyl formamide
C₃H₇NO
ethylene glycol
C₂H₆O₂
DMSO
C₂H₆OS
azodicarbonamide
small molecules amine
metal oxides
metal nanoparticles
potassium permanganate
KMnO₄
potassium ferrate
K₂FeO₄
sodium ferrate
Na₂FeO₄
carbon fibers
MgO
ZnO
Fe₃O₄
MoS₂
WS₂
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
— | 150–3000 W | — |
Duration | 1–3600 s | — |
— | 500–1500 W | — |
Duration | ≤ 10 minutes | — |
Related documents with shared materials, methods, properties, or citations.
METHOD AND DEVICE FOR PRODUCTION OF GRAPHENE OR GRAPHENE-LIKE MATERIALS
GRAPHENE-CONTAINING ELECTRODES
GRAPHENE COMPOSITIONS AND METHODS FOR PRODUCTION THEREOF
Stability of Planar Slits in Multilayer Graphite Crystals
GRAPHENE MATERIALS HAVING RANDOMLY DISTRIBUTED TWO-DIMENSIONAL STRUCTURAL DEFECTS
GRAPHENE OXIDE/POLYMER COMPOSITION FOR MANUFACTURING INNER LINERS AND INNER TUBES OF TIRES AND METHOD FOR PREPARING THE SAME
Production of Graphene and Nanoparticle Catalysts Supported on Graphene Using Laser Radiation
LOW FRICTION WEAR RESISTANT GRAPHENE FILMS
Synthesis of Fluorinated Graphene Oxide for Electrochemical Applications
Composite of Paracoccus denitrificans immobilized on modified graphene oxide and its preparation method and application
GRAPHITE OXIDE, GRAPHENE OXIDE OR GRAPHENE, ELECTRIC DEVICE USING THE SAME AND METHOD OF MANUFACTURING THE SAME, AND ELECTRODIALYSIS APPARATUS
HIGHLY OXIDIZED GRAPHENE OXIDE AND METHODS FOR PRODUCTION THEREOF