Patent
US 10,092,882ULTRATHIN, GRAPHENE-BASED MEMBRANES FOR WATER TREATMENT AND METHODS OF THEIR FORMATION AND USE
Miao Yu
University of South Carolina·18 June 2015·US
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US 10,092,882Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 SVG 15103642.06-10-2016.IPDE₀MM₂RXEAPX0.ABST.1.41.233.2926.279.2955.svg 0.097 0.153 Chemistry Black and white SVG …
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 of forming a membrane, the method comprising: dispersing sin g le-layered graphene oxide powder in deionized water to form a sin g le-layered graphene oxide dispersion; sonicatin g the dispersion; centrifu ging the dispersion to remove lar g e particles and a ggreg ates from the dispersion; thereafter, filterin g the dispersion throu g h a porous support such that a graphene oxide membrane of layered graphene oxide nanoflakes is formed on the [[a]] support, the graphene oxide membrane havin g a thickness of about 2 nm to about 5 nm; thereafter, reducing the graphene oxide membrane to form a reduced graphene oxide membrane wherein reducin g the graphene oxide membrane comprises heatin g the graphene oxide membrane to a reducin g temperature of about 200 0 C to about 250 0 C in a vacuum of about 1 torr to about 5 torr, or comprises heatin g the graphene oxide membrane to a reducin g temperature of about 1 50 0 C to about 240 0 C in the presence of hydrogen, or comprises exposure of the graphene oxide membrane to hydrogen plasma; and thereafter, etchin g the reduced graphene oxide membrane with electroma g netic radiation havin g a wavelen g th of about 400 nm to about 10 nm or with steam to g enerate pores of a predetermined size in the reduced graphene oxide membrane. Currently amended
The method of claim 1, wherein the support comprises aluminum oxide. Previously presented
The method of claim 1, wherein the support comprises an anodic aluminum oxide porous support. Previously presented
The method of claim 1, wherein the support defines pores having an average size of about 0.3 nm to about 20 nm. Previously presented
The reduced graphene oxide membrane formed from the method of claim 1. Currently amended
The method of claim 1, wherein the porous support is a polymer support. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.3 nm to about 20 nm. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.4 nm to about 10 nm. New
. Canceled
6-12.. Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Layered graphene oxide membranes on polymer support separated water from water/oil emulsion with 2 orders of magnitude higher water flux than the support; GO membranes showed excellent anti-fouling performance and water flux can be easily recovered by surface flushing.
1 material
Reduced GO membranes have been shown to have high rejection for 3-nm gold nanoparticles.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide membrane on porous support
reduced graphene oxide membrane
Materials described outside the worked examples.
deionized water
H₂O
aluminum oxide
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Membrane Thickness | — | single-layered graphene oxide |
Pore Size | — | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,092,882Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 SVG 15103642.06-10-2016.IPDE₀MM₂RXEAPX0.ABST.1.41.233.2926.279.2955.svg 0.097 0.153 Chemistry Black and white SVG …
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 of forming a membrane, the method comprising: dispersing sin g le-layered graphene oxide powder in deionized water to form a sin g le-layered graphene oxide dispersion; sonicatin g the dispersion; centrifu ging the dispersion to remove lar g e particles and a ggreg ates from the dispersion; thereafter, filterin g the dispersion throu g h a porous support such that a graphene oxide membrane of layered graphene oxide nanoflakes is formed on the [[a]] support, the graphene oxide membrane havin g a thickness of about 2 nm to about 5 nm; thereafter, reducing the graphene oxide membrane to form a reduced graphene oxide membrane wherein reducin g the graphene oxide membrane comprises heatin g the graphene oxide membrane to a reducin g temperature of about 200 0 C to about 250 0 C in a vacuum of about 1 torr to about 5 torr, or comprises heatin g the graphene oxide membrane to a reducin g temperature of about 1 50 0 C to about 240 0 C in the presence of hydrogen, or comprises exposure of the graphene oxide membrane to hydrogen plasma; and thereafter, etchin g the reduced graphene oxide membrane with electroma g netic radiation havin g a wavelen g th of about 400 nm to about 10 nm or with steam to g enerate pores of a predetermined size in the reduced graphene oxide membrane. Currently amended
The method of claim 1, wherein the support comprises aluminum oxide. Previously presented
The method of claim 1, wherein the support comprises an anodic aluminum oxide porous support. Previously presented
The method of claim 1, wherein the support defines pores having an average size of about 0.3 nm to about 20 nm. Previously presented
The reduced graphene oxide membrane formed from the method of claim 1. Currently amended
The method of claim 1, wherein the porous support is a polymer support. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.3 nm to about 20 nm. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.4 nm to about 10 nm. New
. Canceled
6-12.. Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Layered graphene oxide membranes on polymer support separated water from water/oil emulsion with 2 orders of magnitude higher water flux than the support; GO membranes showed excellent anti-fouling performance and water flux can be easily recovered by surface flushing.
1 material
Reduced GO membranes have been shown to have high rejection for 3-nm gold nanoparticles.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide membrane on porous support
reduced graphene oxide membrane
Materials described outside the worked examples.
deionized water
H₂O
aluminum oxide
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Membrane Thickness | — | single-layered graphene oxide |
Pore Size | — | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,092,882Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 SVG 15103642.06-10-2016.IPDE₀MM₂RXEAPX0.ABST.1.41.233.2926.279.2955.svg 0.097 0.153 Chemistry Black and white SVG …
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 of forming a membrane, the method comprising: dispersing sin g le-layered graphene oxide powder in deionized water to form a sin g le-layered graphene oxide dispersion; sonicatin g the dispersion; centrifu ging the dispersion to remove lar g e particles and a ggreg ates from the dispersion; thereafter, filterin g the dispersion throu g h a porous support such that a graphene oxide membrane of layered graphene oxide nanoflakes is formed on the [[a]] support, the graphene oxide membrane havin g a thickness of about 2 nm to about 5 nm; thereafter, reducing the graphene oxide membrane to form a reduced graphene oxide membrane wherein reducin g the graphene oxide membrane comprises heatin g the graphene oxide membrane to a reducin g temperature of about 200 0 C to about 250 0 C in a vacuum of about 1 torr to about 5 torr, or comprises heatin g the graphene oxide membrane to a reducin g temperature of about 1 50 0 C to about 240 0 C in the presence of hydrogen, or comprises exposure of the graphene oxide membrane to hydrogen plasma; and thereafter, etchin g the reduced graphene oxide membrane with electroma g netic radiation havin g a wavelen g th of about 400 nm to about 10 nm or with steam to g enerate pores of a predetermined size in the reduced graphene oxide membrane. Currently amended
The method of claim 1, wherein the support comprises aluminum oxide. Previously presented
The method of claim 1, wherein the support comprises an anodic aluminum oxide porous support. Previously presented
The method of claim 1, wherein the support defines pores having an average size of about 0.3 nm to about 20 nm. Previously presented
The reduced graphene oxide membrane formed from the method of claim 1. Currently amended
The method of claim 1, wherein the porous support is a polymer support. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.3 nm to about 20 nm. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.4 nm to about 10 nm. New
. Canceled
6-12.. Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Layered graphene oxide membranes on polymer support separated water from water/oil emulsion with 2 orders of magnitude higher water flux than the support; GO membranes showed excellent anti-fouling performance and water flux can be easily recovered by surface flushing.
1 material
Reduced GO membranes have been shown to have high rejection for 3-nm gold nanoparticles.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide membrane on porous support
reduced graphene oxide membrane
Materials described outside the worked examples.
deionized water
H₂O
aluminum oxide
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Membrane Thickness | — | single-layered graphene oxide |
Pore Size | — | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,092,882Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 SVG 15103642.06-10-2016.IPDE₀MM₂RXEAPX0.ABST.1.41.233.2926.279.2955.svg 0.097 0.153 Chemistry Black and white SVG …
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 of forming a membrane, the method comprising: dispersing sin g le-layered graphene oxide powder in deionized water to form a sin g le-layered graphene oxide dispersion; sonicatin g the dispersion; centrifu ging the dispersion to remove lar g e particles and a ggreg ates from the dispersion; thereafter, filterin g the dispersion throu g h a porous support such that a graphene oxide membrane of layered graphene oxide nanoflakes is formed on the [[a]] support, the graphene oxide membrane havin g a thickness of about 2 nm to about 5 nm; thereafter, reducing the graphene oxide membrane to form a reduced graphene oxide membrane wherein reducin g the graphene oxide membrane comprises heatin g the graphene oxide membrane to a reducin g temperature of about 200 0 C to about 250 0 C in a vacuum of about 1 torr to about 5 torr, or comprises heatin g the graphene oxide membrane to a reducin g temperature of about 1 50 0 C to about 240 0 C in the presence of hydrogen, or comprises exposure of the graphene oxide membrane to hydrogen plasma; and thereafter, etchin g the reduced graphene oxide membrane with electroma g netic radiation havin g a wavelen g th of about 400 nm to about 10 nm or with steam to g enerate pores of a predetermined size in the reduced graphene oxide membrane. Currently amended
The method of claim 1, wherein the support comprises aluminum oxide. Previously presented
The method of claim 1, wherein the support comprises an anodic aluminum oxide porous support. Previously presented
The method of claim 1, wherein the support defines pores having an average size of about 0.3 nm to about 20 nm. Previously presented
The reduced graphene oxide membrane formed from the method of claim 1. Currently amended
The method of claim 1, wherein the porous support is a polymer support. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.3 nm to about 20 nm. New
The method of claim 1, wherein the predetermined size of the pores of the reduced graphene oxide membrane is from about 0.4 nm to about 10 nm. New
. Canceled
6-12.. Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Layered graphene oxide membranes on polymer support separated water from water/oil emulsion with 2 orders of magnitude higher water flux than the support; GO membranes showed excellent anti-fouling performance and water flux can be easily recovered by surface flushing.
1 material
Reduced GO membranes have been shown to have high rejection for 3-nm gold nanoparticles.
Layer stacks claimed or described, ordered top of device to substrate.
graphene oxide membrane on porous support
reduced graphene oxide membrane
Materials described outside the worked examples.
deionized water
H₂O
aluminum oxide
Al₂O₃
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Membrane Thickness | — | single-layered graphene oxide |
Pore Size | — | — |
Related documents with shared materials, methods, properties, or citations.
anodic aluminum oxide
polyamide
cellulose acetate
Pore Size | — | reduced graphene oxide |
Pore Size | — | reduced graphene oxide |
Thickness | 0.3–20 nm | — |
Thickness | ≤ 5 nm | — |
Thickness | ≥ 50 nm | — |
Thickness | ≥ 10 nm | — |
Thickness | 5–10 nm | — |
Thickness | 2–5 nm | — |
Temperature | 175–225 °C | — |
Temperature | 200–225 °C | — |
Pressure | 1–5 torr | — |
Thickness | 10–400 nm | — |
Thickness | ≤ 3 nm | — |
Thickness | ≤ 0.4 nm | — |
Duration | ≥ 15 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.4–10 nm | — |
anodic aluminum oxide
polyamide
cellulose acetate
Pore Size | — | reduced graphene oxide |
Pore Size | — | reduced graphene oxide |
Thickness | 0.3–20 nm | — |
Thickness | ≤ 5 nm | — |
Thickness | ≥ 50 nm | — |
Thickness | ≥ 10 nm | — |
Thickness | 5–10 nm | — |
Thickness | 2–5 nm | — |
Temperature | 175–225 °C | — |
Temperature | 200–225 °C | — |
Pressure | 1–5 torr | — |
Thickness | 10–400 nm | — |
Thickness | ≤ 3 nm | — |
Thickness | ≤ 0.4 nm | — |
Duration | ≥ 15 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.4–10 nm | — |
anodic aluminum oxide
polyamide
cellulose acetate
Pore Size | — | reduced graphene oxide |
Pore Size | — | reduced graphene oxide |
Thickness | 0.3–20 nm | — |
Thickness | ≤ 5 nm | — |
Thickness | ≥ 50 nm | — |
Thickness | ≥ 10 nm | — |
Thickness | 5–10 nm | — |
Thickness | 2–5 nm | — |
Temperature | 175–225 °C | — |
Temperature | 200–225 °C | — |
Pressure | 1–5 torr | — |
Thickness | 10–400 nm | — |
Thickness | ≤ 3 nm | — |
Thickness | ≤ 0.4 nm | — |
Duration | ≥ 15 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.4–10 nm | — |
anodic aluminum oxide
polyamide
cellulose acetate
Pore Size | — | reduced graphene oxide |
Pore Size | — | reduced graphene oxide |
Thickness | 0.3–20 nm | — |
Thickness | ≤ 5 nm | — |
Thickness | ≥ 50 nm | — |
Thickness | ≥ 10 nm | — |
Thickness | 5–10 nm | — |
Thickness | 2–5 nm | — |
Temperature | 175–225 °C | — |
Temperature | 200–225 °C | — |
Pressure | 1–5 torr | — |
Thickness | 10–400 nm | — |
Thickness | ≤ 3 nm | — |
Thickness | ≤ 0.4 nm | — |
Duration | ≥ 15 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.4–10 nm | — |