Patent
US 10,029,215GRAPHENE OXIDE NANOCOMPOSITE MEMBRANE FOR GAS SEPARATION, REDUCED GRAPHENE OXIDE NANOCOMPOSITE MEMBRANE AND METHOD FOR MANUFACTURING THE SAME
Ho Bum PARK
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,029,215Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a structure of graphene oxide obtained by Hummers' method from graphite and a structure of functionalized graphene oxide produced by reacting …
FIG. 2. (Example 2) A solution containing hydroiodic acid (HI) and acetic acid mixed in a ratio of 2:5 was incorporated in a reactor 25 and hydroiodic acid …
FIG. 3, it can be seen that the graphene oxide nanocomposite membrane produced in Example 1 includes a graphene oxide coating layer formed on a …
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
SVG 15123975.03-08-2018.JEIOMN₅XRXEAPX4.CLM.1.1.793.147.847.230.svg 0.277 0.18 Chemistry Black and white 1. A graphene oxide nanocomposite membrane for gas separation comprising: a support; and a graphene oxide coating layer with a thickness of 1 n to 50 n disposed on the support and having nanopores. wherein the support is surface-doped with nitrogen and has a contact angle of 10 to 50 0, a surface roughness of 0.1 to 5.0 nm and a surface charge of -20 to +20 mV. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1, wherein the support is a porous polymer support which is selected form the group consisting of polysulfone, polv ether sulfone. pol vimn ide, p olvether imide, polyamide. polyacrylonitrile. cellulose acetate, cellulose triacetate, and polyvinylidene fluoride. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1 [[4]], wherein the porous polymer support has a pore size of 10 nm to 500 nm. Currently amended
The graphene oxide nanocomposite membrane for gas separation according to claim 1, wherein the graphene oxide has a size of 0.1 pm to 5 pm. Original
The graphene oxide nanocomposite membrane for gas separation Attorney Ref: G₁₀₃₅-08901 Amendment A according to claim 1, wherein the nanopores have a mean diameter of 0.5 nm to 2.0 nm. Original
Canceled
Canceled
Canceled
9-10. Canceled
Canceled
A method of manufacturing a graphene oxide nanocomposite membrane for gas separation comprising: i) preparing a dispersion of graphene oxide in distilled water; ii) treating the dispersion with an ultrasonic grinder for 0.1 to 6 hours; and iii) coating a support with the ultrasonicated solution to form a coating layer. Original
The method according to claim 11, further comprising treating the support with plasma and doping with nitrogen before forming the coating
The method according to claim 11, wherein graphene oxide solution having a pH adjusted to solution. Original
The method according to claim 11, wherein selected from the group consisting of direct Original
13-14. Canceled
Canceled
16-18. Canceled
Canceled
21-24. Canceled
Canceled layer. Original the dispersion is a 0.01 to 0.5 wt% aqueous 10.0 using a 1 M aqueous sodium hydroxide the coating is carried out by any one method evaporation, transfer, spin coating and spray coating. the spin coating is conducted three to ten times.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide nanocomposite membrane for gas separation
reduced graphene oxide nanocomposite membrane for gas separation
Materials described outside the worked examples.
graphene oxide
nitrogen-doped support
porous polymer support
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
support contact angle (claimed range) | 10–50 degrees | nitrogen-doped support |
support surface roughness (claimed range) | 0.1–5 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,029,215Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a structure of graphene oxide obtained by Hummers' method from graphite and a structure of functionalized graphene oxide produced by reacting …
FIG. 2. (Example 2) A solution containing hydroiodic acid (HI) and acetic acid mixed in a ratio of 2:5 was incorporated in a reactor 25 and hydroiodic acid …
FIG. 3, it can be seen that the graphene oxide nanocomposite membrane produced in Example 1 includes a graphene oxide coating layer formed on a …
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
SVG 15123975.03-08-2018.JEIOMN₅XRXEAPX4.CLM.1.1.793.147.847.230.svg 0.277 0.18 Chemistry Black and white 1. A graphene oxide nanocomposite membrane for gas separation comprising: a support; and a graphene oxide coating layer with a thickness of 1 n to 50 n disposed on the support and having nanopores. wherein the support is surface-doped with nitrogen and has a contact angle of 10 to 50 0, a surface roughness of 0.1 to 5.0 nm and a surface charge of -20 to +20 mV. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1, wherein the support is a porous polymer support which is selected form the group consisting of polysulfone, polv ether sulfone. pol vimn ide, p olvether imide, polyamide. polyacrylonitrile. cellulose acetate, cellulose triacetate, and polyvinylidene fluoride. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1 [[4]], wherein the porous polymer support has a pore size of 10 nm to 500 nm. Currently amended
The graphene oxide nanocomposite membrane for gas separation according to claim 1, wherein the graphene oxide has a size of 0.1 pm to 5 pm. Original
The graphene oxide nanocomposite membrane for gas separation Attorney Ref: G₁₀₃₅-08901 Amendment A according to claim 1, wherein the nanopores have a mean diameter of 0.5 nm to 2.0 nm. Original
Canceled
Canceled
Canceled
9-10. Canceled
Canceled
A method of manufacturing a graphene oxide nanocomposite membrane for gas separation comprising: i) preparing a dispersion of graphene oxide in distilled water; ii) treating the dispersion with an ultrasonic grinder for 0.1 to 6 hours; and iii) coating a support with the ultrasonicated solution to form a coating layer. Original
The method according to claim 11, further comprising treating the support with plasma and doping with nitrogen before forming the coating
The method according to claim 11, wherein graphene oxide solution having a pH adjusted to solution. Original
The method according to claim 11, wherein selected from the group consisting of direct Original
13-14. Canceled
Canceled
16-18. Canceled
Canceled
21-24. Canceled
Canceled layer. Original the dispersion is a 0.01 to 0.5 wt% aqueous 10.0 using a 1 M aqueous sodium hydroxide the coating is carried out by any one method evaporation, transfer, spin coating and spray coating. the spin coating is conducted three to ten times.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide nanocomposite membrane for gas separation
reduced graphene oxide nanocomposite membrane for gas separation
Materials described outside the worked examples.
graphene oxide
nitrogen-doped support
porous polymer support
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
support contact angle (claimed range) | 10–50 degrees | nitrogen-doped support |
support surface roughness (claimed range) | 0.1–5 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,029,215Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a structure of graphene oxide obtained by Hummers' method from graphite and a structure of functionalized graphene oxide produced by reacting …
FIG. 2. (Example 2) A solution containing hydroiodic acid (HI) and acetic acid mixed in a ratio of 2:5 was incorporated in a reactor 25 and hydroiodic acid …
FIG. 3, it can be seen that the graphene oxide nanocomposite membrane produced in Example 1 includes a graphene oxide coating layer formed on a …
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
SVG 15123975.03-08-2018.JEIOMN₅XRXEAPX4.CLM.1.1.793.147.847.230.svg 0.277 0.18 Chemistry Black and white 1. A graphene oxide nanocomposite membrane for gas separation comprising: a support; and a graphene oxide coating layer with a thickness of 1 n to 50 n disposed on the support and having nanopores. wherein the support is surface-doped with nitrogen and has a contact angle of 10 to 50 0, a surface roughness of 0.1 to 5.0 nm and a surface charge of -20 to +20 mV. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1, wherein the support is a porous polymer support which is selected form the group consisting of polysulfone, polv ether sulfone. pol vimn ide, p olvether imide, polyamide. polyacrylonitrile. cellulose acetate, cellulose triacetate, and polyvinylidene fluoride. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1 [[4]], wherein the porous polymer support has a pore size of 10 nm to 500 nm. Currently amended
The graphene oxide nanocomposite membrane for gas separation according to claim 1, wherein the graphene oxide has a size of 0.1 pm to 5 pm. Original
The graphene oxide nanocomposite membrane for gas separation Attorney Ref: G₁₀₃₅-08901 Amendment A according to claim 1, wherein the nanopores have a mean diameter of 0.5 nm to 2.0 nm. Original
Canceled
Canceled
Canceled
9-10. Canceled
Canceled
A method of manufacturing a graphene oxide nanocomposite membrane for gas separation comprising: i) preparing a dispersion of graphene oxide in distilled water; ii) treating the dispersion with an ultrasonic grinder for 0.1 to 6 hours; and iii) coating a support with the ultrasonicated solution to form a coating layer. Original
The method according to claim 11, further comprising treating the support with plasma and doping with nitrogen before forming the coating
The method according to claim 11, wherein graphene oxide solution having a pH adjusted to solution. Original
The method according to claim 11, wherein selected from the group consisting of direct Original
13-14. Canceled
Canceled
16-18. Canceled
Canceled
21-24. Canceled
Canceled layer. Original the dispersion is a 0.01 to 0.5 wt% aqueous 10.0 using a 1 M aqueous sodium hydroxide the coating is carried out by any one method evaporation, transfer, spin coating and spray coating. the spin coating is conducted three to ten times.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide nanocomposite membrane for gas separation
reduced graphene oxide nanocomposite membrane for gas separation
Materials described outside the worked examples.
graphene oxide
nitrogen-doped support
porous polymer support
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
support contact angle (claimed range) | 10–50 degrees | nitrogen-doped support |
support surface roughness (claimed range) | 0.1–5 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,029,215Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows a structure of graphene oxide obtained by Hummers' method from graphite and a structure of functionalized graphene oxide produced by reacting …
FIG. 2. (Example 2) A solution containing hydroiodic acid (HI) and acetic acid mixed in a ratio of 2:5 was incorporated in a reactor 25 and hydroiodic acid …
FIG. 3, it can be seen that the graphene oxide nanocomposite membrane produced in Example 1 includes a graphene oxide coating layer formed on a …
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
SVG 15123975.03-08-2018.JEIOMN₅XRXEAPX4.CLM.1.1.793.147.847.230.svg 0.277 0.18 Chemistry Black and white 1. A graphene oxide nanocomposite membrane for gas separation comprising: a support; and a graphene oxide coating layer with a thickness of 1 n to 50 n disposed on the support and having nanopores. wherein the support is surface-doped with nitrogen and has a contact angle of 10 to 50 0, a surface roughness of 0.1 to 5.0 nm and a surface charge of -20 to +20 mV. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1, wherein the support is a porous polymer support which is selected form the group consisting of polysulfone, polv ether sulfone. pol vimn ide, p olvether imide, polyamide. polyacrylonitrile. cellulose acetate, cellulose triacetate, and polyvinylidene fluoride. Currently amended
The graphene oxide nanocompo site membrane for gas separation according to claim 1 [[4]], wherein the porous polymer support has a pore size of 10 nm to 500 nm. Currently amended
The graphene oxide nanocomposite membrane for gas separation according to claim 1, wherein the graphene oxide has a size of 0.1 pm to 5 pm. Original
The graphene oxide nanocomposite membrane for gas separation Attorney Ref: G₁₀₃₅-08901 Amendment A according to claim 1, wherein the nanopores have a mean diameter of 0.5 nm to 2.0 nm. Original
Canceled
Canceled
Canceled
9-10. Canceled
Canceled
A method of manufacturing a graphene oxide nanocomposite membrane for gas separation comprising: i) preparing a dispersion of graphene oxide in distilled water; ii) treating the dispersion with an ultrasonic grinder for 0.1 to 6 hours; and iii) coating a support with the ultrasonicated solution to form a coating layer. Original
The method according to claim 11, further comprising treating the support with plasma and doping with nitrogen before forming the coating
The method according to claim 11, wherein graphene oxide solution having a pH adjusted to solution. Original
The method according to claim 11, wherein selected from the group consisting of direct Original
13-14. Canceled
Canceled
16-18. Canceled
Canceled
21-24. Canceled
Canceled layer. Original the dispersion is a 0.01 to 0.5 wt% aqueous 10.0 using a 1 M aqueous sodium hydroxide the coating is carried out by any one method evaporation, transfer, spin coating and spray coating. the spin coating is conducted three to ten times.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide nanocomposite membrane for gas separation
reduced graphene oxide nanocomposite membrane for gas separation
Materials described outside the worked examples.
graphene oxide
nitrogen-doped support
porous polymer support
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4, obtained by a scanning electron microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, and the surface image of
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
support contact angle (claimed range) | 10–50 degrees | nitrogen-doped support |
support surface roughness (claimed range) | 0.1–5 nm |
Related documents with shared materials, methods, properties, or citations.
reduced graphene oxide
hydroiodic acid
HI
acetic acid
CH₃COOH
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
support surface charge (claimed range) | -20–20 mV | nitrogen-doped support |
graphene oxide coating layer thickness (claimed range) | 1–50 nm | graphene oxide |
nanopore mean diameter (claimed range) | 0.5–2 nm | graphene oxide |
graphene oxide lateral size (claimed range) | 0.1–5 µm | graphene oxide |
porous polymer support pore size (claimed range) | 10–500 nm | porous polymer support |
single graphene oxide layer thickness (described range) | 0.6–1 nm | graphene oxide |
Duration | 0.1–6 hours | — |
Temperature | 30–40 °C | — |
Duration | 12–24 hours | — |
reduced graphene oxide
hydroiodic acid
HI
acetic acid
CH₃COOH
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
support surface charge (claimed range) | -20–20 mV | nitrogen-doped support |
graphene oxide coating layer thickness (claimed range) | 1–50 nm | graphene oxide |
nanopore mean diameter (claimed range) | 0.5–2 nm | graphene oxide |
graphene oxide lateral size (claimed range) | 0.1–5 µm | graphene oxide |
porous polymer support pore size (claimed range) | 10–500 nm | porous polymer support |
single graphene oxide layer thickness (described range) | 0.6–1 nm | graphene oxide |
Duration | 0.1–6 hours | — |
Temperature | 30–40 °C | — |
Duration | 12–24 hours | — |
reduced graphene oxide
hydroiodic acid
HI
acetic acid
CH₃COOH
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
support surface charge (claimed range) | -20–20 mV | nitrogen-doped support |
graphene oxide coating layer thickness (claimed range) | 1–50 nm | graphene oxide |
nanopore mean diameter (claimed range) | 0.5–2 nm | graphene oxide |
graphene oxide lateral size (claimed range) | 0.1–5 µm | graphene oxide |
porous polymer support pore size (claimed range) | 10–500 nm | porous polymer support |
single graphene oxide layer thickness (described range) | 0.6–1 nm | graphene oxide |
Duration | 0.1–6 hours | — |
Temperature | 30–40 °C | — |
Duration | 12–24 hours | — |
reduced graphene oxide
hydroiodic acid
HI
acetic acid
CH₃COOH
FIG. 5, obtained by an atomic force microscope, showing the graphene oxide nanocomposite membrane produced in Example 1, the graphene 25 oxide coating layer …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 6, obtained by a transmission electron microscope, showing the graphene oxide nanocomposite 5 membrane for hydrogen separation produced in Example 1, the …
FIG. 7 is a graph showing measurement results of 15 contact angles for supports subjected to surface pre- treatment according to Examples 3 to 6 and supports …
FIG. 8 is an infrared spectroscopy spectrum 10 confirming pre-treatment of the support surface according to Example 4
FIG. 9 showing the graphene oxide nanocomposite membranes produced in Examples 3 to 6, and an image obtained with a 10 scanning electron microscope of
FIG. 10 is a scanning electron microscope image 15 comparing the surfaces before and after coating graphene oxide prepared in Example 4
FIG. 11 is a graph showing surface roughness, hydrophilicity and surface charge characteristics after pre- treatment of the support surface according to …
FIG. 12 is a graph showing gas permeability and selectivity of graphene oxide nanocomposite membranes produced in Example 4 and Comparative Example;
FIG. 13 is a graph showing gas permeability for a porous support (P ES) membrane (pristine membrane) having no 25 coating layer and a graphene oxide …
FIG. 14 is a graph showing hydrogen, carbon dioxide permeability and selectivity of hydrogen compared to carbon dioxide over time for the graphene oxide 5 …
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 15 is a schematic view illustrating a process of manufacturing a reduced graphene oxide nanocomposite membrane according to Example 2 by vapor reduction;
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 16 is an X-ray photoelectron spectroscopy 10 surface analysis graph showing graphene oxide of Example 1 and graphene oxide of Example 2
FIG. 17 is a graph showing gas permeability of a porous support (PES) membrane having no coating layer, a graphene oxide nanocomposite membrane produced in …
FIG. 18 is a graph showing hydrogen/carbon dioxide selectivity of the porous support (PES) membrane having no coating layer, the graphene oxide nanocomposite …
support surface charge (claimed range) | -20–20 mV | nitrogen-doped support |
graphene oxide coating layer thickness (claimed range) | 1–50 nm | graphene oxide |
nanopore mean diameter (claimed range) | 0.5–2 nm | graphene oxide |
graphene oxide lateral size (claimed range) | 0.1–5 µm | graphene oxide |
porous polymer support pore size (claimed range) | 10–500 nm | porous polymer support |
single graphene oxide layer thickness (described range) | 0.6–1 nm | graphene oxide |
Duration | 0.1–6 hours | — |
Temperature | 30–40 °C | — |
Duration | 12–24 hours | — |