POROUS GRAPHENE BASED COMPOSITE MEMBRANES FOR NANOFILTRATION, DESALINATION, AND PERVAPORATION

Benjamin Chu

Patent

Atlas literature

Patent

US 10,272,392

POROUS GRAPHENE BASED COMPOSITE MEMBRANES FOR NANOFILTRATION, DESALINATION, AND PERVAPORATION

Benjamin Chu

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

4 independent · 11 dependent

1
Independent
1-21. (Cancelled.) Canceled
21
Independent
Canceled
22
Independentnanoporous graphenenanoporous graphene oxidenanofibrous scaffoldnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
An article comprising: a nanoﬁbrous scaﬀold; at least a ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanoﬁbrous scaﬀold; an additive selected from the group consisting of cross-linking agents and particles on an outer surface of the at least ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, and at least a second layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of the surface of the ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, such that the additive is between the ﬁrst and second layers of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, wherein the article has a permeate ﬂux from about kg/m 2 hr to about 500 kg/m 2 hr. New
1. 23
  Dependent← claim 22scaffold polymernanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the nanoﬁbrous scaﬀold comprises a polymer selected from the group consisting of polyoleﬁns, polysulfones, ﬂuoropolymers, polyesters, polyamides, polycarbonates, polystyrenes, polynitriles, polyacrylates, polyacetates, polyalcohols, polysac c harides, proteins, polyalkylene oxides, polyurethanes, polyureas, polyimines, polyacrylic acids, polymethacrylic acids, polysiloxanes, poly(ester-co-glycol) copolymers, poly(ether-co-amide) copolymers, derivatives thereof and copolymers thereof. New
2. 24
  Dependent← claim 22scaffold polymernanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the nanoﬁbrous scaﬀold comprises a polymer selected from the group consisting of polyethylene, polypropylene, polyethersulfone, polyvinylidene ﬂuoride, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, nylon 6, nylon 66, nylon 12, polystyrene, polyacrylonitrile, polymethyl methacrylate, polyvinyl acetate, polyvinyl alcohol, chitosan, cellulose, collagen, gelatin, polyethylene oxide, polyethylene glycol, polyvinyl chloride, polyethylene imine, polyvinylpyrrolidone, polydimethylsiloxane, derivatives thereof and copolymers thereof. New
3. 25
  Dependent← claim 22nanofibrous scaffoldnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the nanoﬁbrous scaﬀold has a thickness of from about 1 p m to about 500 pm. New
4. 26
  Dependent← claim 22nanofibrous scaffoldnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the nanoﬁbrous scaﬀold has voids possessing a diameter from about 10 nm to about 200 pm. New
5. 27
  Dependent← claim 22nanoporous graphenenanoporous graphene oxidenanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the ﬁrst layer, the second layer, or both, may have a thickness from about 10 nm to about 1000 nm. New
6. 28
  Dependent← claim 22nanoporous graphenenanoporous graphene oxidenanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the ﬁrst layer, the second layer, or both, may possess pores having an average diameter from about 1 nm to about 1000 nm. New
7. 29
  Dependent← claim 22nanoporous graphenenanoporous graphene oxidenanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the ﬁrst layer, the second layer, or both, have a mean surface porosity from about 10 % to about 70 %. New
8. 30
  Dependent← claim 22cross-linking agentnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the cross-linking agent is selected from the group consisting of boric acid, ethylenediamine, butylenediamine, p-phenylenediamine, glutaraldehyde, epichlorohydrin, phosphorus oxychloride, trimetaphosphate, linear mixed anhydrides of acetic and di- or tribasic carboxlic acids, vinyl sulfone, diepoxides, cyanuric chloride, aldehydes, formaldehyde, acetaldehyde, acrolein, 1,4-butanediol diglycidyl ether, glyoxal, glyoxylic acid, oxydisuccinic acid, citric acid, fumaric acid, and combinations thereof. New
9. 31
  Dependent← claim 22particlesnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the particles are selected from the group consisting of cellulose nanoﬁbers, polyhedral oligomeric silsesquioxane, silica nanoparticles, carbon nanotubes, carbon nanoﬁbers, and combinations thereof. New
10. 32
  Dependent← claim 22nanoporous graphenenanoporous graphene oxidenanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer
  The article of claim 22, wherein the spacing between the ﬁrst layer and the second layer is from about 0.3 nm to about 100 nm. New
33
Independentnanoporous graphenenanoporous graphene oxidenanofibrous scaffoldnanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier (pore-specified) and additive interlayer
An article comprising: a nanoﬁbrous scaﬀold; at least a ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanoﬁbrous scaﬀold, the ﬁrst layer possessing pores having an average diameter from about 1 nm to about 1000 nm; an additive selected from the group consisting of cross-linking agents and particles on an outer surface of the at least ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, and at least a second layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of the surface of the ﬁrst layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, the second layer possessing pores having an average diameter from about 1 nm to about 1000 nm, wherein the additive is between the ﬁrst and second layers of nanoporous graphene, nanoporous graphene oxide, or combinations thereof, and wherein the article has a permeate ﬂux from about 10 kg/m 2 hr to about 500 kg/m 2 hr. New
1. 34
  Dependent← claim 33scaffold polymernanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier (pore-specified) and additive interlayer
  The article of claim 33, wherein the nanoﬁbrous scaﬀold comprises a polymer selected from the group consisting of polyoleﬁns, polysulfones, polycarbonates, polystyrenes, polynitriles, polysaccharides, proteins, polyalkylene oxides, acids, polymethacrylic acids, polysiloxanes, amide) copolymers, derivatives thereof and ﬂuoropolymers, polyesters, polyamides, polyacrylates, polyacetates, polyalcohols, polyurethanes, polyureas, polyimines, polyacrylic poly(ester-co-glycol) copolymers, poly(ether-co-copolymers thereof. New

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

nanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier and additive interlayer

nanoporous graphene oxidesecond barrier layer

cross-linking agentadditive interlayer

nanoporous graphenefirst barrier layer

nanofibrous scaffoldsupport scaffold

nanofibrous scaffold membrane with multilayer nanoporous graphene/GO barrier (pore-specified) and additive interlayer

nanoporous graphene oxidesecond barrier layer nanoporous

Materials

Materials described outside the worked examples.

nanoporous graphene

Barrier Layer First

nanoporous graphene oxide

Barrier Layer Second

Process steps

Additional fabrication and treatment steps described in the patent.

Nanopore Formation Ion Bombardment

Step 1

Duration

120 min

Process details

ion:gallium

ion density:

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Permeate Flux	≤ 500	—
Permeate Flux	10–500	—
Scaffold Thickness

Why these are connected

Related documents with shared materials, methods, properties, or citations.

POROUS GRAPHENE BASED COMPOSITE MEMBRANES FOR NANOFILTRATION, DESALINATION, AND PERVAPORATION | Matter42 Literature