Patent
US 9,713,794SEPARATION MEMBRANE INCLUDING GRAPHENE
Jae-young Choi
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,713,794Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic illustration of a structure of graphene including a plurality of grains defined by various forms of grain boundaries; [0040]
FIG. 2 is a cross-sectional view of graphene including a plurality of grains defined by various forms of grain boundaries; [0041]
FIG. 3 is a cross-sectional view of a double-layer graphene including a plurality of grains defined by various forms of grain boundaries; [0042]
FIG. 4 is a schematic illustration of a structure of a graphene monolayer including defects; [0043]
FIG. 5 illustrates a structure of a separation membrane with a multilayer graphene transferred on a polymer support, according to example embodiments; [0044]
FIG. 6 is a surface image of a separation membrane with a graphene monolayer transferred on a polymer support; [0045]
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on at least one surface of the polymer support, the graphene monolayer being 2-dimensional and planar-structured, wherein the graphene monolayer includes a plurality of grains def in ed by grain boundaries, the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene monolayer, and the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance. wherein the at least one graphene monolaver on the polymer support has a first fluid pe rm eability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolaver on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 1, wherein the separation membrane has a multi-layer structure including at least two graphene monolayers.
The separation membrane of claim 1, further comprising: Page 2 Application No.: 13/443,489 Attorney Docket No.: 2557S I-00 1758-US a sheet connected to at least one of the polymer support and the graphene, the sheet including at least one of, a transition metal dichalcogenide (MY 2), a transition metal phosphorus trisulfide (MPY 3), a transition metal oxyhalide (MOX), (MCl)LaNb₂O 7, one of BCN, B 2 CN, BC 6 N, layered silicate, mica, talc, Al 2 Si 2 Os(OH) 4, layered titanate (TiO X, x<2), a-Zr(HPO 4) 2 H 2 O, y-FeO(OH), and Al(OH) 3, and a transition metal dihalide (MX 2), wherein M indicates at least one transition metal, Y indicates one of S and Se, and X indicates a halogen.
A sea-water desalination apparatus including the separation membrane according to claim 1 [[.]], wherein the graphene monolaver includes pores defined by grain boundaries, and at least one of a width of the pores in the graphene monolaver and a width the gaps present along the grain boundaries between the grains in the graphene monolaver allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 1.
The separation membrane of claim 1, further comprising: at least one of channels and pores defined by the plurality of grains, wherein the at least one of channel and pores are configured through the grains.
The separation membrane of claim 1, wherein the graphene monolayer directly contacts the polymer support. Page 5 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US
The separation membrane of claim 1, further comprising: an intermediate layer between the polymer support and the graphene monolayer.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including at least three graphene monolayers separated by an interlayer distance of about 0.34 nm to about 0.50 nm.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including 2 to 50 graphene monolayers.
The separation membrane of claim 1, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
The separation membrane of cla i m 4, wherein the transition metal dichalcogenide (MY 2) includes at least one of TiS2, TiSe 2, NbS2, NbSe 2, TaS2, TaSe2, the transition metal phosphorus trisulfide (MPY 3) includes FePS 3, and the transition metal dihalide (MX 2) includes one of CuBr 2, CdBr 2, CdI 2, and CuC l 2.
The separation membrane of cla i m 1, wherein the polymer support includes one of a dense membrane structure and a microporous structure.
The separation membrane of cla i m 1, wherein the polymer support includes at least one of polysulfone, polyethersulfone, polyimide, polyamide, polyetherimide, polyacrylonitrile, poly(methyl methacrylate), cellulose acetate, Page 3 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US polyethylene, polycarbonate, polytetrafluoroethylene, polypropylene, a nd polyvinylidene fluoride.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on the polymer support, the graphene monolayer having at least one of pores and channels defined by grain boundaries, wherein the at least one of pores and channels are present along the grain boundaries, and the at least one of pores and channels are configured to pass a target substance to separate the target substance from a mixture containing the target substance, wherein the at least one graphene monolayer on the polymer support has a first fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has a first fluid/second fluid selectivity of at least about 1.5.
A desalination apparatus including the separation membrane according to claim 14, wherein a width of the at least one of pores and channels in the graphene monolayer allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 14, Page 6 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US wherein a width of the at least one of pores and channels in the graphene monolayer allows selective separation of a first gas from a gas mixture containing the first gas and a second gas.
The separation membrane of claim 14, wherein the first fluid is oxygen, and the second fluid is nitrogen. Page 8 Application No.: 13/443,489 Attorney Docket No.: 2557 SI -001758-US 28. The separation membrane of claim 24, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
A separation membrane comprising: a polymer support; and a graphene including at least one monolayer on at least one surface of the polymer support, the graphene being 2-dimensional and planar-structured, wherein the graphene includes a plurality of grains defined by grain boundaries, and the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene, the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance, the grains include molecular defects that define pores in the grains, the pores are dimensioned to allow target ions, liquid, or gases to pass through the graphene, and the pores are defined in the grains and spaced apart from the gaps between the grains, wherein the at least one graphene monolayer on the polymer support has a first Page 7 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 24, wherein the graphene includes a plurality of monolayers stacked on top of each other on the polymer support, the graphene includes channels defined by adjacent monolayers among the plurality of monolayers, wherein each of the monolayers include the grains defined by the grain boundaries, the grains include the molecular defects that the define pores in the grains, the pores and channels are configured to pass the target substance to separate the target substance from a mixture containing the target substance, and the spacing between pores in one of the monolayers is different than the spacing between pores in a different one of the monolayers.
The separation membrane of claim 24, wherein a width of the gaps between the grains in the graphene allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions. *** END CLAIM LISTING
Layer stacks claimed or described, ordered top of device to substrate.
graphene separation membrane on polymer support
sea-water desalination apparatus
gas separation apparatus
Materials described outside the worked examples.
graphene monolayer
C
polymer support
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
first fluid permeability range | 400–1200 Barrer | C |
first fluid/second fluid selectivity (at least ~1.5) | ≥ 1.5 |
Related documents with shared materials, methods, properties, or citations.
A COMPOSITE FILM INCLUDING A GRAPHENE OXIDE COATING LAYER, A POROUS POLYMER SUPPORT INCLUDING THE SAME AND A METHOD FOR PREPARING THE SAME
TUNABLE GRAPHENE-BASED INFRARED REFLECTANCE FILTER HAVING PATTERNED NANOANTENNA LAYER AND UNPATTERNED GRAPHENE LAYER
Patent
Atlas literature
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US 9,713,794Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic illustration of a structure of graphene including a plurality of grains defined by various forms of grain boundaries; [0040]
FIG. 2 is a cross-sectional view of graphene including a plurality of grains defined by various forms of grain boundaries; [0041]
FIG. 3 is a cross-sectional view of a double-layer graphene including a plurality of grains defined by various forms of grain boundaries; [0042]
FIG. 4 is a schematic illustration of a structure of a graphene monolayer including defects; [0043]
FIG. 5 illustrates a structure of a separation membrane with a multilayer graphene transferred on a polymer support, according to example embodiments; [0044]
FIG. 6 is a surface image of a separation membrane with a graphene monolayer transferred on a polymer support; [0045]
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on at least one surface of the polymer support, the graphene monolayer being 2-dimensional and planar-structured, wherein the graphene monolayer includes a plurality of grains def in ed by grain boundaries, the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene monolayer, and the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance. wherein the at least one graphene monolaver on the polymer support has a first fluid pe rm eability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolaver on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 1, wherein the separation membrane has a multi-layer structure including at least two graphene monolayers.
The separation membrane of claim 1, further comprising: Page 2 Application No.: 13/443,489 Attorney Docket No.: 2557S I-00 1758-US a sheet connected to at least one of the polymer support and the graphene, the sheet including at least one of, a transition metal dichalcogenide (MY 2), a transition metal phosphorus trisulfide (MPY 3), a transition metal oxyhalide (MOX), (MCl)LaNb₂O 7, one of BCN, B 2 CN, BC 6 N, layered silicate, mica, talc, Al 2 Si 2 Os(OH) 4, layered titanate (TiO X, x<2), a-Zr(HPO 4) 2 H 2 O, y-FeO(OH), and Al(OH) 3, and a transition metal dihalide (MX 2), wherein M indicates at least one transition metal, Y indicates one of S and Se, and X indicates a halogen.
A sea-water desalination apparatus including the separation membrane according to claim 1 [[.]], wherein the graphene monolaver includes pores defined by grain boundaries, and at least one of a width of the pores in the graphene monolaver and a width the gaps present along the grain boundaries between the grains in the graphene monolaver allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 1.
The separation membrane of claim 1, further comprising: at least one of channels and pores defined by the plurality of grains, wherein the at least one of channel and pores are configured through the grains.
The separation membrane of claim 1, wherein the graphene monolayer directly contacts the polymer support. Page 5 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US
The separation membrane of claim 1, further comprising: an intermediate layer between the polymer support and the graphene monolayer.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including at least three graphene monolayers separated by an interlayer distance of about 0.34 nm to about 0.50 nm.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including 2 to 50 graphene monolayers.
The separation membrane of claim 1, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
The separation membrane of cla i m 4, wherein the transition metal dichalcogenide (MY 2) includes at least one of TiS2, TiSe 2, NbS2, NbSe 2, TaS2, TaSe2, the transition metal phosphorus trisulfide (MPY 3) includes FePS 3, and the transition metal dihalide (MX 2) includes one of CuBr 2, CdBr 2, CdI 2, and CuC l 2.
The separation membrane of cla i m 1, wherein the polymer support includes one of a dense membrane structure and a microporous structure.
The separation membrane of cla i m 1, wherein the polymer support includes at least one of polysulfone, polyethersulfone, polyimide, polyamide, polyetherimide, polyacrylonitrile, poly(methyl methacrylate), cellulose acetate, Page 3 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US polyethylene, polycarbonate, polytetrafluoroethylene, polypropylene, a nd polyvinylidene fluoride.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on the polymer support, the graphene monolayer having at least one of pores and channels defined by grain boundaries, wherein the at least one of pores and channels are present along the grain boundaries, and the at least one of pores and channels are configured to pass a target substance to separate the target substance from a mixture containing the target substance, wherein the at least one graphene monolayer on the polymer support has a first fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has a first fluid/second fluid selectivity of at least about 1.5.
A desalination apparatus including the separation membrane according to claim 14, wherein a width of the at least one of pores and channels in the graphene monolayer allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 14, Page 6 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US wherein a width of the at least one of pores and channels in the graphene monolayer allows selective separation of a first gas from a gas mixture containing the first gas and a second gas.
The separation membrane of claim 14, wherein the first fluid is oxygen, and the second fluid is nitrogen. Page 8 Application No.: 13/443,489 Attorney Docket No.: 2557 SI -001758-US 28. The separation membrane of claim 24, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
A separation membrane comprising: a polymer support; and a graphene including at least one monolayer on at least one surface of the polymer support, the graphene being 2-dimensional and planar-structured, wherein the graphene includes a plurality of grains defined by grain boundaries, and the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene, the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance, the grains include molecular defects that define pores in the grains, the pores are dimensioned to allow target ions, liquid, or gases to pass through the graphene, and the pores are defined in the grains and spaced apart from the gaps between the grains, wherein the at least one graphene monolayer on the polymer support has a first Page 7 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 24, wherein the graphene includes a plurality of monolayers stacked on top of each other on the polymer support, the graphene includes channels defined by adjacent monolayers among the plurality of monolayers, wherein each of the monolayers include the grains defined by the grain boundaries, the grains include the molecular defects that the define pores in the grains, the pores and channels are configured to pass the target substance to separate the target substance from a mixture containing the target substance, and the spacing between pores in one of the monolayers is different than the spacing between pores in a different one of the monolayers.
The separation membrane of claim 24, wherein a width of the gaps between the grains in the graphene allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions. *** END CLAIM LISTING
Layer stacks claimed or described, ordered top of device to substrate.
graphene separation membrane on polymer support
sea-water desalination apparatus
gas separation apparatus
Materials described outside the worked examples.
graphene monolayer
C
polymer support
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
first fluid permeability range | 400–1200 Barrer | C |
first fluid/second fluid selectivity (at least ~1.5) | ≥ 1.5 |
Related documents with shared materials, methods, properties, or citations.
A COMPOSITE FILM INCLUDING A GRAPHENE OXIDE COATING LAYER, A POROUS POLYMER SUPPORT INCLUDING THE SAME AND A METHOD FOR PREPARING THE SAME
TUNABLE GRAPHENE-BASED INFRARED REFLECTANCE FILTER HAVING PATTERNED NANOANTENNA LAYER AND UNPATTERNED GRAPHENE LAYER
Patent
Atlas literature
Patent
US 9,713,794Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic illustration of a structure of graphene including a plurality of grains defined by various forms of grain boundaries; [0040]
FIG. 2 is a cross-sectional view of graphene including a plurality of grains defined by various forms of grain boundaries; [0041]
FIG. 3 is a cross-sectional view of a double-layer graphene including a plurality of grains defined by various forms of grain boundaries; [0042]
FIG. 4 is a schematic illustration of a structure of a graphene monolayer including defects; [0043]
FIG. 5 illustrates a structure of a separation membrane with a multilayer graphene transferred on a polymer support, according to example embodiments; [0044]
FIG. 6 is a surface image of a separation membrane with a graphene monolayer transferred on a polymer support; [0045]
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on at least one surface of the polymer support, the graphene monolayer being 2-dimensional and planar-structured, wherein the graphene monolayer includes a plurality of grains def in ed by grain boundaries, the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene monolayer, and the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance. wherein the at least one graphene monolaver on the polymer support has a first fluid pe rm eability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolaver on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 1, wherein the separation membrane has a multi-layer structure including at least two graphene monolayers.
The separation membrane of claim 1, further comprising: Page 2 Application No.: 13/443,489 Attorney Docket No.: 2557S I-00 1758-US a sheet connected to at least one of the polymer support and the graphene, the sheet including at least one of, a transition metal dichalcogenide (MY 2), a transition metal phosphorus trisulfide (MPY 3), a transition metal oxyhalide (MOX), (MCl)LaNb₂O 7, one of BCN, B 2 CN, BC 6 N, layered silicate, mica, talc, Al 2 Si 2 Os(OH) 4, layered titanate (TiO X, x<2), a-Zr(HPO 4) 2 H 2 O, y-FeO(OH), and Al(OH) 3, and a transition metal dihalide (MX 2), wherein M indicates at least one transition metal, Y indicates one of S and Se, and X indicates a halogen.
A sea-water desalination apparatus including the separation membrane according to claim 1 [[.]], wherein the graphene monolaver includes pores defined by grain boundaries, and at least one of a width of the pores in the graphene monolaver and a width the gaps present along the grain boundaries between the grains in the graphene monolaver allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 1.
The separation membrane of claim 1, further comprising: at least one of channels and pores defined by the plurality of grains, wherein the at least one of channel and pores are configured through the grains.
The separation membrane of claim 1, wherein the graphene monolayer directly contacts the polymer support. Page 5 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US
The separation membrane of claim 1, further comprising: an intermediate layer between the polymer support and the graphene monolayer.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including at least three graphene monolayers separated by an interlayer distance of about 0.34 nm to about 0.50 nm.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including 2 to 50 graphene monolayers.
The separation membrane of claim 1, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
The separation membrane of cla i m 4, wherein the transition metal dichalcogenide (MY 2) includes at least one of TiS2, TiSe 2, NbS2, NbSe 2, TaS2, TaSe2, the transition metal phosphorus trisulfide (MPY 3) includes FePS 3, and the transition metal dihalide (MX 2) includes one of CuBr 2, CdBr 2, CdI 2, and CuC l 2.
The separation membrane of cla i m 1, wherein the polymer support includes one of a dense membrane structure and a microporous structure.
The separation membrane of cla i m 1, wherein the polymer support includes at least one of polysulfone, polyethersulfone, polyimide, polyamide, polyetherimide, polyacrylonitrile, poly(methyl methacrylate), cellulose acetate, Page 3 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US polyethylene, polycarbonate, polytetrafluoroethylene, polypropylene, a nd polyvinylidene fluoride.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on the polymer support, the graphene monolayer having at least one of pores and channels defined by grain boundaries, wherein the at least one of pores and channels are present along the grain boundaries, and the at least one of pores and channels are configured to pass a target substance to separate the target substance from a mixture containing the target substance, wherein the at least one graphene monolayer on the polymer support has a first fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has a first fluid/second fluid selectivity of at least about 1.5.
A desalination apparatus including the separation membrane according to claim 14, wherein a width of the at least one of pores and channels in the graphene monolayer allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 14, Page 6 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US wherein a width of the at least one of pores and channels in the graphene monolayer allows selective separation of a first gas from a gas mixture containing the first gas and a second gas.
The separation membrane of claim 14, wherein the first fluid is oxygen, and the second fluid is nitrogen. Page 8 Application No.: 13/443,489 Attorney Docket No.: 2557 SI -001758-US 28. The separation membrane of claim 24, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
A separation membrane comprising: a polymer support; and a graphene including at least one monolayer on at least one surface of the polymer support, the graphene being 2-dimensional and planar-structured, wherein the graphene includes a plurality of grains defined by grain boundaries, and the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene, the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance, the grains include molecular defects that define pores in the grains, the pores are dimensioned to allow target ions, liquid, or gases to pass through the graphene, and the pores are defined in the grains and spaced apart from the gaps between the grains, wherein the at least one graphene monolayer on the polymer support has a first Page 7 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 24, wherein the graphene includes a plurality of monolayers stacked on top of each other on the polymer support, the graphene includes channels defined by adjacent monolayers among the plurality of monolayers, wherein each of the monolayers include the grains defined by the grain boundaries, the grains include the molecular defects that the define pores in the grains, the pores and channels are configured to pass the target substance to separate the target substance from a mixture containing the target substance, and the spacing between pores in one of the monolayers is different than the spacing between pores in a different one of the monolayers.
The separation membrane of claim 24, wherein a width of the gaps between the grains in the graphene allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions. *** END CLAIM LISTING
Layer stacks claimed or described, ordered top of device to substrate.
graphene separation membrane on polymer support
sea-water desalination apparatus
gas separation apparatus
Materials described outside the worked examples.
graphene monolayer
C
polymer support
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
first fluid permeability range | 400–1200 Barrer | C |
first fluid/second fluid selectivity (at least ~1.5) | ≥ 1.5 |
Related documents with shared materials, methods, properties, or citations.
A COMPOSITE FILM INCLUDING A GRAPHENE OXIDE COATING LAYER, A POROUS POLYMER SUPPORT INCLUDING THE SAME AND A METHOD FOR PREPARING THE SAME
TUNABLE GRAPHENE-BASED INFRARED REFLECTANCE FILTER HAVING PATTERNED NANOANTENNA LAYER AND UNPATTERNED GRAPHENE LAYER
Patent
Atlas literature
Patent
US 9,713,794Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic illustration of a structure of graphene including a plurality of grains defined by various forms of grain boundaries; [0040]
FIG. 2 is a cross-sectional view of graphene including a plurality of grains defined by various forms of grain boundaries; [0041]
FIG. 3 is a cross-sectional view of a double-layer graphene including a plurality of grains defined by various forms of grain boundaries; [0042]
FIG. 4 is a schematic illustration of a structure of a graphene monolayer including defects; [0043]
FIG. 5 illustrates a structure of a separation membrane with a multilayer graphene transferred on a polymer support, according to example embodiments; [0044]
FIG. 6 is a surface image of a separation membrane with a graphene monolayer transferred on a polymer support; [0045]
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on at least one surface of the polymer support, the graphene monolayer being 2-dimensional and planar-structured, wherein the graphene monolayer includes a plurality of grains def in ed by grain boundaries, the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene monolayer, and the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance. wherein the at least one graphene monolaver on the polymer support has a first fluid pe rm eability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolaver on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 1, wherein the separation membrane has a multi-layer structure including at least two graphene monolayers.
The separation membrane of claim 1, further comprising: Page 2 Application No.: 13/443,489 Attorney Docket No.: 2557S I-00 1758-US a sheet connected to at least one of the polymer support and the graphene, the sheet including at least one of, a transition metal dichalcogenide (MY 2), a transition metal phosphorus trisulfide (MPY 3), a transition metal oxyhalide (MOX), (MCl)LaNb₂O 7, one of BCN, B 2 CN, BC 6 N, layered silicate, mica, talc, Al 2 Si 2 Os(OH) 4, layered titanate (TiO X, x<2), a-Zr(HPO 4) 2 H 2 O, y-FeO(OH), and Al(OH) 3, and a transition metal dihalide (MX 2), wherein M indicates at least one transition metal, Y indicates one of S and Se, and X indicates a halogen.
A sea-water desalination apparatus including the separation membrane according to claim 1 [[.]], wherein the graphene monolaver includes pores defined by grain boundaries, and at least one of a width of the pores in the graphene monolaver and a width the gaps present along the grain boundaries between the grains in the graphene monolaver allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 1.
The separation membrane of claim 1, further comprising: at least one of channels and pores defined by the plurality of grains, wherein the at least one of channel and pores are configured through the grains.
The separation membrane of claim 1, wherein the graphene monolayer directly contacts the polymer support. Page 5 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US
The separation membrane of claim 1, further comprising: an intermediate layer between the polymer support and the graphene monolayer.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including at least three graphene monolayers separated by an interlayer distance of about 0.34 nm to about 0.50 nm.
The separation membrane of claim 1, wherein the separation membrane has a multilayer structure including 2 to 50 graphene monolayers.
The separation membrane of claim 1, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
The separation membrane of cla i m 4, wherein the transition metal dichalcogenide (MY 2) includes at least one of TiS2, TiSe 2, NbS2, NbSe 2, TaS2, TaSe2, the transition metal phosphorus trisulfide (MPY 3) includes FePS 3, and the transition metal dihalide (MX 2) includes one of CuBr 2, CdBr 2, CdI 2, and CuC l 2.
The separation membrane of cla i m 1, wherein the polymer support includes one of a dense membrane structure and a microporous structure.
The separation membrane of cla i m 1, wherein the polymer support includes at least one of polysulfone, polyethersulfone, polyimide, polyamide, polyetherimide, polyacrylonitrile, poly(methyl methacrylate), cellulose acetate, Page 3 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US polyethylene, polycarbonate, polytetrafluoroethylene, polypropylene, a nd polyvinylidene fluoride.
A separation membrane comprising: a polymer support; and at least one graphene monolayer on the polymer support, the graphene monolayer having at least one of pores and channels defined by grain boundaries, wherein the at least one of pores and channels are present along the grain boundaries, and the at least one of pores and channels are configured to pass a target substance to separate the target substance from a mixture containing the target substance, wherein the at least one graphene monolayer on the polymer support has a first fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has a first fluid/second fluid selectivity of at least about 1.5.
A desalination apparatus including the separation membrane according to claim 14, wherein a width of the at least one of pores and channels in the graphene monolayer allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions.
A gas separation apparatus including the separation membrane according to claim 14, Page 6 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US wherein a width of the at least one of pores and channels in the graphene monolayer allows selective separation of a first gas from a gas mixture containing the first gas and a second gas.
The separation membrane of claim 14, wherein the first fluid is oxygen, and the second fluid is nitrogen. Page 8 Application No.: 13/443,489 Attorney Docket No.: 2557 SI -001758-US 28. The separation membrane of claim 24, wherein the first fluid is oxygen, and the second fluid is nitrogen.
canceled
A separation membrane comprising: a polymer support; and a graphene including at least one monolayer on at least one surface of the polymer support, the graphene being 2-dimensional and planar-structured, wherein the graphene includes a plurality of grains defined by grain boundaries, and the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene, the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance, the grains include molecular defects that define pores in the grains, the pores are dimensioned to allow target ions, liquid, or gases to pass through the graphene, and the pores are defined in the grains and spaced apart from the gaps between the grains, wherein the at least one graphene monolayer on the polymer support has a first Page 7 Application No.: 13/443,489 Attorney Docket No.: 2557SI-001758-US fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.
The separation membrane of claim 24, wherein the graphene includes a plurality of monolayers stacked on top of each other on the polymer support, the graphene includes channels defined by adjacent monolayers among the plurality of monolayers, wherein each of the monolayers include the grains defined by the grain boundaries, the grains include the molecular defects that the define pores in the grains, the pores and channels are configured to pass the target substance to separate the target substance from a mixture containing the target substance, and the spacing between pores in one of the monolayers is different than the spacing between pores in a different one of the monolayers.
The separation membrane of claim 24, wherein a width of the gaps between the grains in the graphene allows selective passage of water molecules and blocks hydrated salt ions from a solution containing the water molecules and the hydrated salt ions. *** END CLAIM LISTING
Layer stacks claimed or described, ordered top of device to substrate.
graphene separation membrane on polymer support
sea-water desalination apparatus
gas separation apparatus
Materials described outside the worked examples.
graphene monolayer
C
polymer support
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a graph illustrating an inversely proportional relationship between permeability and selectivity in an existing gas-separating polymer membrane for …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
first fluid permeability range | 400–1200 Barrer | C |
first fluid/second fluid selectivity (at least ~1.5) | ≥ 1.5 |
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TUNABLE GRAPHENE-BASED INFRARED REFLECTANCE FILTER HAVING PATTERNED NANOANTENNA LAYER AND UNPATTERNED GRAPHENE LAYER
transition metal dichalcogenide/transition metal phosphorus trisulfide/transition metal dihalide sheet
intermediate layer polymer resin
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Thickness | 0.335–100 nm | — |
Thickness | 1–100 nm | — |
Thickness | ≤ 0.5 nm | — |
Thickness | 0.34–0.5 nm | — |
transition metal dichalcogenide/transition metal phosphorus trisulfide/transition metal dihalide sheet
intermediate layer polymer resin
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Thickness | 0.335–100 nm | — |
Thickness | 1–100 nm | — |
Thickness | ≤ 0.5 nm | — |
Thickness | 0.34–0.5 nm | — |
transition metal dichalcogenide/transition metal phosphorus trisulfide/transition metal dihalide sheet
intermediate layer polymer resin
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Thickness | 0.335–100 nm | — |
Thickness | 1–100 nm | — |
Thickness | ≤ 0.5 nm | — |
Thickness | 0.34–0.5 nm | — |
transition metal dichalcogenide/transition metal phosphorus trisulfide/transition metal dihalide sheet
intermediate layer polymer resin
FIG. 8 is a graph of separation efficiencies of graphene-containing separation membranes according to Examples 1-5 and Comparative Example 1.
Thickness | 0.335–100 nm | — |
Thickness | 1–100 nm | — |
Thickness | ≤ 0.5 nm | — |
Thickness | 0.34–0.5 nm | — |