Ultrathin, molecular-sieving graphene oxide membranes for separations along with their methods of formation and use
US-9795931-B2 · Oct 24, 2017 · US
Ultrathin, graphene-based membranes for water treatment and methods of their formation and use
US2016310908A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016310908-A1 |
| Application number | US-201415103642-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 10, 2014 |
| Priority date | Dec 10, 2013 |
| Publication date | Oct 27, 2016 |
| Grant date | — |
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Abstract
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Methods are generally provided for forming a membrane. In one embodiment, the method includes: dispersing GO nanoparticles in a solvent; depositing the GO nanoparticles on a support to form a GO membrane; and reducing the GO membrane to form a rGO membrane. Also provided is the rGO membrane formed from such methods, along with a plurality of stacked rGO layers. Methods are also provided for separating water from a water/oil emulsion by, for example, passing water through the rGO membrane.
First claim
Opening claim text (preview).
1 . A method of forming a membrane, the method comprising: dispersing GO nanoparticles in a solvent; depositing the GO nanoparticles on a support to form a GO membrane; and reducing the GO membrane to form a rGO membrane. 2 . The method of claim 1 , wherein the solvent is deionized water. 3 . The method of claim 1 , wherein the support comprises aluminum oxide. 4 . The method of claim 1 , wherein the support comprises an anodic aluminum oxide porous support. 5 . The method of claim 1 , wherein the support defines pores having an average size of about 0.3 nm to about 20 nm. 6 . The method of claim 1 , wherein the GO membrane has an average thickness of about 2 nm to about 5 nm on the support. 7 . The method of claim 1 , wherein reducing the GO membrane to form a rGO membrane comprises: heating the GO membrane to a reducing temperature in a vacuum. 8 . The method of claim 1 , wherein reducing the GO membrane to form a rGO membrane comprises: heating the GO membrane to a reducing temperature at a vacuum pressure of about 1 torr to about 5 torr. 9 . The method of claim 8 , wherein the reducing temperature is about 200° C. to about 250° C. 10 . The method of claim 1 , wherein reducing the GO membrane to form a rGO membrane comprises: heating the GO membrane to a reducing temperature in the presence of hydrogen. 11 . The method of claim 10 , wherein the reducing temperature is about 150° C. to about 240° C. 12 . The method of claim 1 , further comprising: irradiating the rGO membrane with electromagnetic radiation having a wavelength of about 400 nm to about 10 nm. 13 . The rGO membrane formed from the method of claim 1 . 14 . A method of separating water from a water/oil emulsion, the method comprising: passing water through the rGO membrane of claim 13 .
Assignees
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Classifications
- B01D67/0046Primary
by slurry techniques, e.g. die or slip-casting · CPC title
In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction · CPC title
by deposition from the liquid phase, e.g. electrochemical deposition (B01D67/0046 takes precedence) · CPC title
by nanofiltration · CPC title
Nanofiltration · CPC title
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- What does patent US2016310908A1 cover?
- Methods are generally provided for forming a membrane. In one embodiment, the method includes: dispersing GO nanoparticles in a solvent; depositing the GO nanoparticles on a support to form a GO membrane; and reducing the GO membrane to form a rGO membrane. Also provided is the rGO membrane formed from such methods, along with a plurality of stacked rGO layers. Methods are also provided for sep…
- Who is the assignee on this patent?
- Univ South Carolina
- What technology area does this patent fall under?
- Primary CPC classification B01D67/0046. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 27 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).