Patent
US 10,602,646METHOD FOR PREPARING MAGNETIC IRON OXIDE-GRAPHENE COMPOSITE
Se Ho PARK
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,602,646Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process in which the interlayer spacing of graphite widens according to the reaction between Fe C l 3 and a primary amine in the …
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 5(a)) and a HR-TEM image (
FIG. 6 shows STEM EDS MAPPING images (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 8(b) shows a SEM image.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a magnetic iron oxide-graphene composite comprising the steps of: mixing graphite and a halogen salt of iron and heat-treating the same (Step 1); reacting the product of step 1 with a (C 1-20 alkyl) amine (Step 2); washing the product of step 2 (Step 3); subjecting the product of step 3 to a high-speed homogenization (Step 4); and subjecting the product of step 4 to sonication or a high-pressure homogenization (Step 5) z wherein the high-speed homogenization of step 4 is carried out by stirring the product of Step 2 at 5000 to 8000 rpm, wherein the high-pressure homogenization of step 5 is carried out by passing the product of step 4 through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale, wherein the product of step 4 is introduced to the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passes through the micro-channel. Currently amended
The method according to claim 1, wherein the halogen salt of iron is FeC l 3, FeC l 2, or a mixture thereof. Original
The method according to claim 1, wherein, in step 1, the weight ratio between graphite and halogen salt of iron is 1: 1 to 1:10. Original
The method according to claim 1, wherein the heat treatment is carried out at 300 ° C to 400 °C. Original
The method according to claim 1, wherein the step 1 is carried out for 24 hours or more. Original
The method according to claim 1, wherein (C 1-20 alkyl) amine is hexylamine, or dodecylamine. Original
The method according to claim 1, wherein the hours or more. Original
The method according to claim 1, wherein the
The method according to claim 1, wherein the composite is Fe 3 O 4, or Fe 2 0 3. Original
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled step 2 is carried out at 30 ° C to 250 ° C for 6 step 4 is carried out for 0.5 to 3 hours. Original the micro-channel has a diameter of 50 to 300 the step 5 is additionally carried out for 2 to iron oxide of the magnetic iron oxide-graphene
Materials described outside the worked examples.
graphite
halogen salt of iron
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 0.5–15 nm | — |
Pressure |
Related documents with shared materials, methods, properties, or citations.
MAGNETIC GRAPHENE-LIKE NANOPARTICLES OR GRAPHITIC NANO- OR MICROPARTICLES AND METHOD OF PRODUCTION AND USES THEREOF
PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION
Patent
Atlas literature
Patent
US 10,602,646Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process in which the interlayer spacing of graphite widens according to the reaction between Fe C l 3 and a primary amine in the …
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 5(a)) and a HR-TEM image (
FIG. 6 shows STEM EDS MAPPING images (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 8(b) shows a SEM image.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a magnetic iron oxide-graphene composite comprising the steps of: mixing graphite and a halogen salt of iron and heat-treating the same (Step 1); reacting the product of step 1 with a (C 1-20 alkyl) amine (Step 2); washing the product of step 2 (Step 3); subjecting the product of step 3 to a high-speed homogenization (Step 4); and subjecting the product of step 4 to sonication or a high-pressure homogenization (Step 5) z wherein the high-speed homogenization of step 4 is carried out by stirring the product of Step 2 at 5000 to 8000 rpm, wherein the high-pressure homogenization of step 5 is carried out by passing the product of step 4 through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale, wherein the product of step 4 is introduced to the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passes through the micro-channel. Currently amended
The method according to claim 1, wherein the halogen salt of iron is FeC l 3, FeC l 2, or a mixture thereof. Original
The method according to claim 1, wherein, in step 1, the weight ratio between graphite and halogen salt of iron is 1: 1 to 1:10. Original
The method according to claim 1, wherein the heat treatment is carried out at 300 ° C to 400 °C. Original
The method according to claim 1, wherein the step 1 is carried out for 24 hours or more. Original
The method according to claim 1, wherein (C 1-20 alkyl) amine is hexylamine, or dodecylamine. Original
The method according to claim 1, wherein the hours or more. Original
The method according to claim 1, wherein the
The method according to claim 1, wherein the composite is Fe 3 O 4, or Fe 2 0 3. Original
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled step 2 is carried out at 30 ° C to 250 ° C for 6 step 4 is carried out for 0.5 to 3 hours. Original the micro-channel has a diameter of 50 to 300 the step 5 is additionally carried out for 2 to iron oxide of the magnetic iron oxide-graphene
Materials described outside the worked examples.
graphite
halogen salt of iron
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 0.5–15 nm | — |
Pressure |
Related documents with shared materials, methods, properties, or citations.
MAGNETIC GRAPHENE-LIKE NANOPARTICLES OR GRAPHITIC NANO- OR MICROPARTICLES AND METHOD OF PRODUCTION AND USES THEREOF
PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION
Patent
Atlas literature
Patent
US 10,602,646Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process in which the interlayer spacing of graphite widens according to the reaction between Fe C l 3 and a primary amine in the …
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 5(a)) and a HR-TEM image (
FIG. 6 shows STEM EDS MAPPING images (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 8(b) shows a SEM image.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a magnetic iron oxide-graphene composite comprising the steps of: mixing graphite and a halogen salt of iron and heat-treating the same (Step 1); reacting the product of step 1 with a (C 1-20 alkyl) amine (Step 2); washing the product of step 2 (Step 3); subjecting the product of step 3 to a high-speed homogenization (Step 4); and subjecting the product of step 4 to sonication or a high-pressure homogenization (Step 5) z wherein the high-speed homogenization of step 4 is carried out by stirring the product of Step 2 at 5000 to 8000 rpm, wherein the high-pressure homogenization of step 5 is carried out by passing the product of step 4 through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale, wherein the product of step 4 is introduced to the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passes through the micro-channel. Currently amended
The method according to claim 1, wherein the halogen salt of iron is FeC l 3, FeC l 2, or a mixture thereof. Original
The method according to claim 1, wherein, in step 1, the weight ratio between graphite and halogen salt of iron is 1: 1 to 1:10. Original
The method according to claim 1, wherein the heat treatment is carried out at 300 ° C to 400 °C. Original
The method according to claim 1, wherein the step 1 is carried out for 24 hours or more. Original
The method according to claim 1, wherein (C 1-20 alkyl) amine is hexylamine, or dodecylamine. Original
The method according to claim 1, wherein the hours or more. Original
The method according to claim 1, wherein the
The method according to claim 1, wherein the composite is Fe 3 O 4, or Fe 2 0 3. Original
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled step 2 is carried out at 30 ° C to 250 ° C for 6 step 4 is carried out for 0.5 to 3 hours. Original the micro-channel has a diameter of 50 to 300 the step 5 is additionally carried out for 2 to iron oxide of the magnetic iron oxide-graphene
Materials described outside the worked examples.
graphite
halogen salt of iron
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 0.5–15 nm | — |
Pressure |
Related documents with shared materials, methods, properties, or citations.
MAGNETIC GRAPHENE-LIKE NANOPARTICLES OR GRAPHITIC NANO- OR MICROPARTICLES AND METHOD OF PRODUCTION AND USES THEREOF
PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION
Patent
Atlas literature
Patent
US 10,602,646Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process in which the interlayer spacing of graphite widens according to the reaction between Fe C l 3 and a primary amine in the …
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 5(a)) and a HR-TEM image (
FIG. 6 shows STEM EDS MAPPING images (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 8(b) shows a SEM image.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing a magnetic iron oxide-graphene composite comprising the steps of: mixing graphite and a halogen salt of iron and heat-treating the same (Step 1); reacting the product of step 1 with a (C 1-20 alkyl) amine (Step 2); washing the product of step 2 (Step 3); subjecting the product of step 3 to a high-speed homogenization (Step 4); and subjecting the product of step 4 to sonication or a high-pressure homogenization (Step 5) z wherein the high-speed homogenization of step 4 is carried out by stirring the product of Step 2 at 5000 to 8000 rpm, wherein the high-pressure homogenization of step 5 is carried out by passing the product of step 4 through a high-pressure homogenizer including an inlet, an outlet, and a micro-channel that connects between the inlet and the outlet and has a diameter in a micrometer scale, wherein the product of step 4 is introduced to the inlet of the high-pressure homogenizer under application of a pressure of 500 to 3000 bar and passes through the micro-channel. Currently amended
The method according to claim 1, wherein the halogen salt of iron is FeC l 3, FeC l 2, or a mixture thereof. Original
The method according to claim 1, wherein, in step 1, the weight ratio between graphite and halogen salt of iron is 1: 1 to 1:10. Original
The method according to claim 1, wherein the heat treatment is carried out at 300 ° C to 400 °C. Original
The method according to claim 1, wherein the step 1 is carried out for 24 hours or more. Original
The method according to claim 1, wherein (C 1-20 alkyl) amine is hexylamine, or dodecylamine. Original
The method according to claim 1, wherein the hours or more. Original
The method according to claim 1, wherein the
The method according to claim 1, wherein the composite is Fe 3 O 4, or Fe 2 0 3. Original
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled step 2 is carried out at 30 ° C to 250 ° C for 6 step 4 is carried out for 0.5 to 3 hours. Original the micro-channel has a diameter of 50 to 300 the step 5 is additionally carried out for 2 to iron oxide of the magnetic iron oxide-graphene
Materials described outside the worked examples.
graphite
halogen salt of iron
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a SEM image of graphite according to an embodiment of the present invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 0.5–15 nm | — |
Pressure |
Related documents with shared materials, methods, properties, or citations.
MAGNETIC GRAPHENE-LIKE NANOPARTICLES OR GRAPHITIC NANO- OR MICROPARTICLES AND METHOD OF PRODUCTION AND USES THEREOF
PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION
(C₁-20 alkyl)amine
magnetic iron oxide-graphene composite
iron(III) chloride
FeCl₃
iron(II) chloride
FeCl₂
hexylamine
dodecylamine
magnetite
Fe₃O₄
hematite
Fe₂O₃
graphene
graphite intercalation compound (GIC)
iron oxide (FeOx)
FeOx
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
| — |
Thickness | 1–5 nm | — |
Duration | 3–6 hours | — |
Temperature | 300–400 °C | — |
Temperature | 30–250 °C | — |
Pressure | 500–3000 bar | — |
Duration | 0.5–3 hours | — |
Temperature | 60–120 °C | — |
Temperature | 80–100 °C | — |
Duration | ≤ 0.5 hour | — |
(C₁-20 alkyl)amine
magnetic iron oxide-graphene composite
iron(III) chloride
FeCl₃
iron(II) chloride
FeCl₂
hexylamine
dodecylamine
magnetite
Fe₃O₄
hematite
Fe₂O₃
graphene
graphite intercalation compound (GIC)
iron oxide (FeOx)
FeOx
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
| — |
Thickness | 1–5 nm | — |
Duration | 3–6 hours | — |
Temperature | 300–400 °C | — |
Temperature | 30–250 °C | — |
Pressure | 500–3000 bar | — |
Duration | 0.5–3 hours | — |
Temperature | 60–120 °C | — |
Temperature | 80–100 °C | — |
Duration | ≤ 0.5 hour | — |
(C₁-20 alkyl)amine
magnetic iron oxide-graphene composite
iron(III) chloride
FeCl₃
iron(II) chloride
FeCl₂
hexylamine
dodecylamine
magnetite
Fe₃O₄
hematite
Fe₂O₃
graphene
graphite intercalation compound (GIC)
iron oxide (FeOx)
FeOx
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
| — |
Thickness | 1–5 nm | — |
Duration | 3–6 hours | — |
Temperature | 300–400 °C | — |
Temperature | 30–250 °C | — |
Pressure | 500–3000 bar | — |
Duration | 0.5–3 hours | — |
Temperature | 60–120 °C | — |
Temperature | 80–100 °C | — |
Duration | ≤ 0.5 hour | — |
(C₁-20 alkyl)amine
magnetic iron oxide-graphene composite
iron(III) chloride
FeCl₃
iron(II) chloride
FeCl₂
hexylamine
dodecylamine
magnetite
Fe₃O₄
hematite
Fe₂O₃
graphene
graphite intercalation compound (GIC)
iron oxide (FeOx)
FeOx
FIG. 3 shows the result of Raman analysis (
FIG. 4 shows the result of XRD analysis (
FIG. 7 shows a SEM image of the magnetic iron oxide-graphene composite according to one embodiment of the present invention through the preparation process.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIG. 9 shows the result of thickness analysis of the magnetic iron oxide-graphene composite according to one embodiment of the present invention.
FIGS. 10(a) and 10(b) each show a SEM image of the side view of the film, and
| — |
Thickness | 1–5 nm | — |
Duration | 3–6 hours | — |
Temperature | 300–400 °C | — |
Temperature | 30–250 °C | — |
Pressure | 500–3000 bar | — |
Duration | 0.5–3 hours | — |
Temperature | 60–120 °C | — |
Temperature | 80–100 °C | — |
Duration | ≤ 0.5 hour | — |