Patent
US 9,731,973METHOD FOR OBTAINING GRAPHENE OXIDE
Amaia ZURUTUZA ELORZA
US
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Patent details
Patent
US 9,731,973Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
FIGS. 4A and 4B the high monolayer content of the dispersions after the high shear mixing treatment can be seen. It is clear that the 98 % of the graphene …
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 obtaining graphene oxide comprising the steps of: a) adding an acid and a salt to graphite for obtaining a graphite oxide; and b) exfoliating the graphite oxide by mixing it; wherein the steps a) and b) adding and exfoliating are carried out simultaneously in a high shear mixer[[;]].
The method of claim 1, wherein the acid is sulphuric acid and the salt is potassium permanganate.
The method of claim 1, wherein no other components are added in steps a) or b) the adding or exfoliating.
The method of claim 1, further comprising: c) carrying out a second mixing step in the high shear mixer once the a purification [[is]] has been completed.
Materials described outside the worked examples.
graphene oxide
graphite
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
monolayer graphene oxide content | >99.8 % | graphene oxide |
Duration | ≥ 7200 minutes |
Related documents with shared materials, methods, properties, or citations.
Patent details
Patent
US 9,731,973Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
FIGS. 4A and 4B the high monolayer content of the dispersions after the high shear mixing treatment can be seen. It is clear that the 98 % of the graphene …
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 obtaining graphene oxide comprising the steps of: a) adding an acid and a salt to graphite for obtaining a graphite oxide; and b) exfoliating the graphite oxide by mixing it; wherein the steps a) and b) adding and exfoliating are carried out simultaneously in a high shear mixer[[;]].
The method of claim 1, wherein the acid is sulphuric acid and the salt is potassium permanganate.
The method of claim 1, wherein no other components are added in steps a) or b) the adding or exfoliating.
The method of claim 1, further comprising: c) carrying out a second mixing step in the high shear mixer once the a purification [[is]] has been completed.
Materials described outside the worked examples.
graphene oxide
graphite
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
monolayer graphene oxide content | >99.8 % | graphene oxide |
Duration | ≥ 7200 minutes |
Related documents with shared materials, methods, properties, or citations.
Patent details
Patent
US 9,731,973Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
FIGS. 4A and 4B the high monolayer content of the dispersions after the high shear mixing treatment can be seen. It is clear that the 98 % of the graphene …
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 obtaining graphene oxide comprising the steps of: a) adding an acid and a salt to graphite for obtaining a graphite oxide; and b) exfoliating the graphite oxide by mixing it; wherein the steps a) and b) adding and exfoliating are carried out simultaneously in a high shear mixer[[;]].
The method of claim 1, wherein the acid is sulphuric acid and the salt is potassium permanganate.
The method of claim 1, wherein no other components are added in steps a) or b) the adding or exfoliating.
The method of claim 1, further comprising: c) carrying out a second mixing step in the high shear mixer once the a purification [[is]] has been completed.
Materials described outside the worked examples.
graphene oxide
graphite
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
monolayer graphene oxide content | >99.8 % | graphene oxide |
Duration | ≥ 7200 minutes |
Related documents with shared materials, methods, properties, or citations.
Patent details
Patent
US 9,731,973Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
FIGS. 4A and 4B the high monolayer content of the dispersions after the high shear mixing treatment can be seen. It is clear that the 98 % of the graphene …
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 obtaining graphene oxide comprising the steps of: a) adding an acid and a salt to graphite for obtaining a graphite oxide; and b) exfoliating the graphite oxide by mixing it; wherein the steps a) and b) adding and exfoliating are carried out simultaneously in a high shear mixer[[;]].
The method of claim 1, wherein the acid is sulphuric acid and the salt is potassium permanganate.
The method of claim 1, wherein no other components are added in steps a) or b) the adding or exfoliating.
The method of claim 1, further comprising: c) carrying out a second mixing step in the high shear mixer once the a purification [[is]] has been completed.
Materials described outside the worked examples.
graphene oxide
graphite
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 1. From the XPS it can be concluded that the starting graphite material has been oxidised and that oxygen functionalities have been covalently bonded onto …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
monolayer graphene oxide content | >99.8 % | graphene oxide |
Duration | ≥ 7200 minutes |
Related documents with shared materials, methods, properties, or citations.
acid
salt
sulphuric acid
H₂SO₄
potassium permanganate
KMnO₄
graphite oxide
| — |
acid
salt
sulphuric acid
H₂SO₄
potassium permanganate
KMnO₄
graphite oxide
| — |
acid
salt
sulphuric acid
H₂SO₄
potassium permanganate
KMnO₄
graphite oxide
| — |
acid
salt
sulphuric acid
H₂SO₄
potassium permanganate
KMnO₄
graphite oxide
| — |