Patent
US 9,981,212METHOD FOR MANUFACTURING POROUS GRAPHENE FILTER, POROUS GRAPHENE FILTER MANUFACTURED USING SAME, AND FILTER APPARATUS USING POROUS GRAPHENE FILTER
Hee-Yeon KIM
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,981,212Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flow chart of illustrating a method for 25 manufacturing a porous graphene filter in accordance with some 6 embodiments of the present disclosure;
FIG. 2 is a plane view of the first graphene filter described in
FIG. 3 20 Although the concentration and feed rate of the substitution source supplied from the second material feeder 220 to the second vaporizer 320 is …
FIG. 4 is a block diagram illustrating an apparatus for manufacturing the first or the second graphene filter illustrated in
FIG. 5 is a cross-sectional view of a porous graphene 10 filter according to some embodiments of the present disclosure;
FIG. 6 is a conceptual view illustrating the filtration process of the porous graphene filter of
FIGS. 7 and 8 are perspective views of the first or the 15 second graphene filter in a film form and a circular form, respectively; and
FIG. 8. In this case, circular frames may be applied to opposite ends of the cylindrical first graphene filter 1 The cylindrical first graphene filter 1 engaged …
FIG. 9 is a block diagram illustrating a filtering apparatus according to some embodiments of the present disclosure.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(withdrawn-currently amended): A method for manufacturing a porous graphene filter, comprising: forming a first graphene filte including-a first holes with a first size on average, carbon atoms and nitro g en atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, during deposition of carbon atoms generated from a f irst carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the first carbon source with the nitrogen atoms causing crystal defects in the first g raphene filter and generated from a f irst substitution source; forming a second graphene filte includin g second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, during deposition of carbon atoms generated from a second carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the second carbon source with the nitrogen atoms causing crystal defects in the second g raphene filter and generated from a second substitution source; arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a la rg est hole among the second holes of the second gr aphene filter is smaller than a size of a smallest hole amo ng the first holes of the first g raphene filter so that each material of a plurality of materials in a mixture is selectively passed and filtered throu g h the first holes and the second holes to filter out a material that can pass throu g h the first holes but not throu a h the second holes between the first g raphene filter and the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein the first and second substitution sources respectively used in the formation of the first graphene filter having the first holes and the second graphene filter having the second holes independently contain a nitrogen atom.
(withdrawn-currently amended): The method of claim 1, wherein the second substitution source is provided in a smaller amount in the formation of the first graphene filter-compared to the first substitution source in the formation of the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st carbon source and the second carbon source for the first and the second graphene filters contains at least one selected from the group consisting of methane (CH 4), methanol (CH 3 O H), carbon monoxide (CO), ethane (C 2 H 6), ethylene (C 2 H 4), ethanol (C 2 H 5 O H), acetylene (C 2 H 2), acetone (CH 3 COC H 3), propane (C 3 H 8), propylene (C 3 H 6), butane (C 4 H 10), pentane (C 5 H 12), pentene (C 5 H 10), cyclopentadiene (C 5 H 6), hexane (C 6 H 14), cyclohexane (C 6 H 12), benzene (C 6 H 6), toluene (C 7 H 8), and xylene (C 8 H 10).
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st substitution source and the second substitute source for the first and the second graphene filters contains at least one selected from the group consisting of ammonia (NH 3), hydrazine (N 2 H 4), pyridine (C 5 H 5 N), pyrrole (C 4 H 5 N), acetonitrile (CH 3 CN), nitric acid (HNO 3), silver nitrate (AgNO 3), barium nitrate (Ba(N O 3) 2), N,N-dimethylformamide ((CH 3) 2 NCHO), lithium nitride (Li 3 N), and cyanuric chloride (C 3 C 1 3 N 3).
(withdrawn-currently amended): The method of claim 1, wherein the f irst carbon source and the f irst substitution source for the first graphene filter are simultaneously vaporized when the first graphene filter is formed and the second carbon source and the second substitution source for the second graphene filter are simultaneously vaporized when the second graphene- 5 filter is formed.
: A porous graphene filter, comprising: a first graphene filter including a-first oles with a first size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, the first holes bein g is- formed by substituting a part of carbon atoms at a-covalently bonded portions in the first graphene filter with the nitrogen atoms causin g crystal defects in the first g raphene filter; a second graphene filter includin g second holes with a second size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, the second holes being i s- formed by substituting a part of carbon atoms at a-covalently bonded portions in the second graphene filter with the nitrogen atoms causing crystal defects in the second g raphene filter; and a filter body in which the first graphene filter and the second graphene filter are immobilized against a path through which a mixture of a plurality of materials moves after the mixture is introduced into the filter body, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole amon g the second holes of the second g raphene filter is smaller than a size of a smallest hole among the first holes of the first g raphene filter so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass through the first holes but not through the second holes between the first g raphene filter and the second graphene filter. Currently amended
: The porous graphene filter of claim 7, wherein the first graphene filter and the second graphene filter are independently in a film or cylindrical form. Original
: A filtering apparatus, comprising: a mixture feeder for intermittently providing a predetermined amount of a mixture consisting of materials different in size from each other; a graphene filter comprising: a filter body equipped with an inlet through which the mixture is introduced into the filter body, and at least two outlets at a side of the filter body; and a first graphene film and a second g raphene film positioned between the outlets within the filter body, for separating the individual materials of the mixture from each other; and a recovery unit, connected to the outlets, for recovering the separated individual materials, wherein the first gr aphene film includes first holes with a first size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene film, the first holes being formed by substitutin g a part of carbon atoms at covalently bonded portions in the first graphene film with the nitrogen atoms causing crystal defects in the first graphene film, wherein the second graphene film includes second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the second graphene film, the second holes bein g formed by substitutin g a part of carbon atoms at covalently bonded portions in the second g raphene film with the nitrogen atoms causing crystal defects in the second graphene film, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole among the second holes of the second graphene film is smaller than a size of a smallest hole amon g the first holes of the first graphene film so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass throu g h the first holes but not through the second holes between the first graphene film and the second grap hene film. Currently amended
: The filtering apparatus of claim 9, wherein the mixture feeder comprises: a mixture reservoir for supplying the mixture; a container for receiving a predetermined amount of the mixture; and a discharge unit for discharging the mixture from the container. Original
: The filtering apparatus of claim 9, further comprising: electric valves associated with the mixture feeder, the graphene filter, and the recovery unit; and a valve controller for controlling the electric valves. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
porous graphene filter assembly (method claim)
porous graphene filter (product claim)
filtering apparatus with porous graphene films
Materials described outside the worked examples.
nitrogen-doped porous graphene
carbon source
nitrogen substitution source
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 20–330 min | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,981,212Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flow chart of illustrating a method for 25 manufacturing a porous graphene filter in accordance with some 6 embodiments of the present disclosure;
FIG. 2 is a plane view of the first graphene filter described in
FIG. 3 20 Although the concentration and feed rate of the substitution source supplied from the second material feeder 220 to the second vaporizer 320 is …
FIG. 4 is a block diagram illustrating an apparatus for manufacturing the first or the second graphene filter illustrated in
FIG. 5 is a cross-sectional view of a porous graphene 10 filter according to some embodiments of the present disclosure;
FIG. 6 is a conceptual view illustrating the filtration process of the porous graphene filter of
FIGS. 7 and 8 are perspective views of the first or the 15 second graphene filter in a film form and a circular form, respectively; and
FIG. 8. In this case, circular frames may be applied to opposite ends of the cylindrical first graphene filter 1 The cylindrical first graphene filter 1 engaged …
FIG. 9 is a block diagram illustrating a filtering apparatus according to some embodiments of the present disclosure.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(withdrawn-currently amended): A method for manufacturing a porous graphene filter, comprising: forming a first graphene filte including-a first holes with a first size on average, carbon atoms and nitro g en atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, during deposition of carbon atoms generated from a f irst carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the first carbon source with the nitrogen atoms causing crystal defects in the first g raphene filter and generated from a f irst substitution source; forming a second graphene filte includin g second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, during deposition of carbon atoms generated from a second carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the second carbon source with the nitrogen atoms causing crystal defects in the second g raphene filter and generated from a second substitution source; arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a la rg est hole among the second holes of the second gr aphene filter is smaller than a size of a smallest hole amo ng the first holes of the first g raphene filter so that each material of a plurality of materials in a mixture is selectively passed and filtered throu g h the first holes and the second holes to filter out a material that can pass throu g h the first holes but not throu a h the second holes between the first g raphene filter and the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein the first and second substitution sources respectively used in the formation of the first graphene filter having the first holes and the second graphene filter having the second holes independently contain a nitrogen atom.
(withdrawn-currently amended): The method of claim 1, wherein the second substitution source is provided in a smaller amount in the formation of the first graphene filter-compared to the first substitution source in the formation of the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st carbon source and the second carbon source for the first and the second graphene filters contains at least one selected from the group consisting of methane (CH 4), methanol (CH 3 O H), carbon monoxide (CO), ethane (C 2 H 6), ethylene (C 2 H 4), ethanol (C 2 H 5 O H), acetylene (C 2 H 2), acetone (CH 3 COC H 3), propane (C 3 H 8), propylene (C 3 H 6), butane (C 4 H 10), pentane (C 5 H 12), pentene (C 5 H 10), cyclopentadiene (C 5 H 6), hexane (C 6 H 14), cyclohexane (C 6 H 12), benzene (C 6 H 6), toluene (C 7 H 8), and xylene (C 8 H 10).
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st substitution source and the second substitute source for the first and the second graphene filters contains at least one selected from the group consisting of ammonia (NH 3), hydrazine (N 2 H 4), pyridine (C 5 H 5 N), pyrrole (C 4 H 5 N), acetonitrile (CH 3 CN), nitric acid (HNO 3), silver nitrate (AgNO 3), barium nitrate (Ba(N O 3) 2), N,N-dimethylformamide ((CH 3) 2 NCHO), lithium nitride (Li 3 N), and cyanuric chloride (C 3 C 1 3 N 3).
(withdrawn-currently amended): The method of claim 1, wherein the f irst carbon source and the f irst substitution source for the first graphene filter are simultaneously vaporized when the first graphene filter is formed and the second carbon source and the second substitution source for the second graphene filter are simultaneously vaporized when the second graphene- 5 filter is formed.
: A porous graphene filter, comprising: a first graphene filter including a-first oles with a first size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, the first holes bein g is- formed by substituting a part of carbon atoms at a-covalently bonded portions in the first graphene filter with the nitrogen atoms causin g crystal defects in the first g raphene filter; a second graphene filter includin g second holes with a second size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, the second holes being i s- formed by substituting a part of carbon atoms at a-covalently bonded portions in the second graphene filter with the nitrogen atoms causing crystal defects in the second g raphene filter; and a filter body in which the first graphene filter and the second graphene filter are immobilized against a path through which a mixture of a plurality of materials moves after the mixture is introduced into the filter body, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole amon g the second holes of the second g raphene filter is smaller than a size of a smallest hole among the first holes of the first g raphene filter so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass through the first holes but not through the second holes between the first g raphene filter and the second graphene filter. Currently amended
: The porous graphene filter of claim 7, wherein the first graphene filter and the second graphene filter are independently in a film or cylindrical form. Original
: A filtering apparatus, comprising: a mixture feeder for intermittently providing a predetermined amount of a mixture consisting of materials different in size from each other; a graphene filter comprising: a filter body equipped with an inlet through which the mixture is introduced into the filter body, and at least two outlets at a side of the filter body; and a first graphene film and a second g raphene film positioned between the outlets within the filter body, for separating the individual materials of the mixture from each other; and a recovery unit, connected to the outlets, for recovering the separated individual materials, wherein the first gr aphene film includes first holes with a first size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene film, the first holes being formed by substitutin g a part of carbon atoms at covalently bonded portions in the first graphene film with the nitrogen atoms causing crystal defects in the first graphene film, wherein the second graphene film includes second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the second graphene film, the second holes bein g formed by substitutin g a part of carbon atoms at covalently bonded portions in the second g raphene film with the nitrogen atoms causing crystal defects in the second graphene film, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole among the second holes of the second graphene film is smaller than a size of a smallest hole amon g the first holes of the first graphene film so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass throu g h the first holes but not through the second holes between the first graphene film and the second grap hene film. Currently amended
: The filtering apparatus of claim 9, wherein the mixture feeder comprises: a mixture reservoir for supplying the mixture; a container for receiving a predetermined amount of the mixture; and a discharge unit for discharging the mixture from the container. Original
: The filtering apparatus of claim 9, further comprising: electric valves associated with the mixture feeder, the graphene filter, and the recovery unit; and a valve controller for controlling the electric valves. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
porous graphene filter assembly (method claim)
porous graphene filter (product claim)
filtering apparatus with porous graphene films
Materials described outside the worked examples.
nitrogen-doped porous graphene
carbon source
nitrogen substitution source
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 20–330 min | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,981,212Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flow chart of illustrating a method for 25 manufacturing a porous graphene filter in accordance with some 6 embodiments of the present disclosure;
FIG. 2 is a plane view of the first graphene filter described in
FIG. 3 20 Although the concentration and feed rate of the substitution source supplied from the second material feeder 220 to the second vaporizer 320 is …
FIG. 4 is a block diagram illustrating an apparatus for manufacturing the first or the second graphene filter illustrated in
FIG. 5 is a cross-sectional view of a porous graphene 10 filter according to some embodiments of the present disclosure;
FIG. 6 is a conceptual view illustrating the filtration process of the porous graphene filter of
FIGS. 7 and 8 are perspective views of the first or the 15 second graphene filter in a film form and a circular form, respectively; and
FIG. 8. In this case, circular frames may be applied to opposite ends of the cylindrical first graphene filter 1 The cylindrical first graphene filter 1 engaged …
FIG. 9 is a block diagram illustrating a filtering apparatus according to some embodiments of the present disclosure.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(withdrawn-currently amended): A method for manufacturing a porous graphene filter, comprising: forming a first graphene filte including-a first holes with a first size on average, carbon atoms and nitro g en atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, during deposition of carbon atoms generated from a f irst carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the first carbon source with the nitrogen atoms causing crystal defects in the first g raphene filter and generated from a f irst substitution source; forming a second graphene filte includin g second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, during deposition of carbon atoms generated from a second carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the second carbon source with the nitrogen atoms causing crystal defects in the second g raphene filter and generated from a second substitution source; arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a la rg est hole among the second holes of the second gr aphene filter is smaller than a size of a smallest hole amo ng the first holes of the first g raphene filter so that each material of a plurality of materials in a mixture is selectively passed and filtered throu g h the first holes and the second holes to filter out a material that can pass throu g h the first holes but not throu a h the second holes between the first g raphene filter and the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein the first and second substitution sources respectively used in the formation of the first graphene filter having the first holes and the second graphene filter having the second holes independently contain a nitrogen atom.
(withdrawn-currently amended): The method of claim 1, wherein the second substitution source is provided in a smaller amount in the formation of the first graphene filter-compared to the first substitution source in the formation of the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st carbon source and the second carbon source for the first and the second graphene filters contains at least one selected from the group consisting of methane (CH 4), methanol (CH 3 O H), carbon monoxide (CO), ethane (C 2 H 6), ethylene (C 2 H 4), ethanol (C 2 H 5 O H), acetylene (C 2 H 2), acetone (CH 3 COC H 3), propane (C 3 H 8), propylene (C 3 H 6), butane (C 4 H 10), pentane (C 5 H 12), pentene (C 5 H 10), cyclopentadiene (C 5 H 6), hexane (C 6 H 14), cyclohexane (C 6 H 12), benzene (C 6 H 6), toluene (C 7 H 8), and xylene (C 8 H 10).
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st substitution source and the second substitute source for the first and the second graphene filters contains at least one selected from the group consisting of ammonia (NH 3), hydrazine (N 2 H 4), pyridine (C 5 H 5 N), pyrrole (C 4 H 5 N), acetonitrile (CH 3 CN), nitric acid (HNO 3), silver nitrate (AgNO 3), barium nitrate (Ba(N O 3) 2), N,N-dimethylformamide ((CH 3) 2 NCHO), lithium nitride (Li 3 N), and cyanuric chloride (C 3 C 1 3 N 3).
(withdrawn-currently amended): The method of claim 1, wherein the f irst carbon source and the f irst substitution source for the first graphene filter are simultaneously vaporized when the first graphene filter is formed and the second carbon source and the second substitution source for the second graphene filter are simultaneously vaporized when the second graphene- 5 filter is formed.
: A porous graphene filter, comprising: a first graphene filter including a-first oles with a first size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, the first holes bein g is- formed by substituting a part of carbon atoms at a-covalently bonded portions in the first graphene filter with the nitrogen atoms causin g crystal defects in the first g raphene filter; a second graphene filter includin g second holes with a second size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, the second holes being i s- formed by substituting a part of carbon atoms at a-covalently bonded portions in the second graphene filter with the nitrogen atoms causing crystal defects in the second g raphene filter; and a filter body in which the first graphene filter and the second graphene filter are immobilized against a path through which a mixture of a plurality of materials moves after the mixture is introduced into the filter body, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole amon g the second holes of the second g raphene filter is smaller than a size of a smallest hole among the first holes of the first g raphene filter so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass through the first holes but not through the second holes between the first g raphene filter and the second graphene filter. Currently amended
: The porous graphene filter of claim 7, wherein the first graphene filter and the second graphene filter are independently in a film or cylindrical form. Original
: A filtering apparatus, comprising: a mixture feeder for intermittently providing a predetermined amount of a mixture consisting of materials different in size from each other; a graphene filter comprising: a filter body equipped with an inlet through which the mixture is introduced into the filter body, and at least two outlets at a side of the filter body; and a first graphene film and a second g raphene film positioned between the outlets within the filter body, for separating the individual materials of the mixture from each other; and a recovery unit, connected to the outlets, for recovering the separated individual materials, wherein the first gr aphene film includes first holes with a first size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene film, the first holes being formed by substitutin g a part of carbon atoms at covalently bonded portions in the first graphene film with the nitrogen atoms causing crystal defects in the first graphene film, wherein the second graphene film includes second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the second graphene film, the second holes bein g formed by substitutin g a part of carbon atoms at covalently bonded portions in the second g raphene film with the nitrogen atoms causing crystal defects in the second graphene film, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole among the second holes of the second graphene film is smaller than a size of a smallest hole amon g the first holes of the first graphene film so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass throu g h the first holes but not through the second holes between the first graphene film and the second grap hene film. Currently amended
: The filtering apparatus of claim 9, wherein the mixture feeder comprises: a mixture reservoir for supplying the mixture; a container for receiving a predetermined amount of the mixture; and a discharge unit for discharging the mixture from the container. Original
: The filtering apparatus of claim 9, further comprising: electric valves associated with the mixture feeder, the graphene filter, and the recovery unit; and a valve controller for controlling the electric valves. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
porous graphene filter assembly (method claim)
porous graphene filter (product claim)
filtering apparatus with porous graphene films
Materials described outside the worked examples.
nitrogen-doped porous graphene
carbon source
nitrogen substitution source
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 20–330 min | — |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,981,212Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flow chart of illustrating a method for 25 manufacturing a porous graphene filter in accordance with some 6 embodiments of the present disclosure;
FIG. 2 is a plane view of the first graphene filter described in
FIG. 3 20 Although the concentration and feed rate of the substitution source supplied from the second material feeder 220 to the second vaporizer 320 is …
FIG. 4 is a block diagram illustrating an apparatus for manufacturing the first or the second graphene filter illustrated in
FIG. 5 is a cross-sectional view of a porous graphene 10 filter according to some embodiments of the present disclosure;
FIG. 6 is a conceptual view illustrating the filtration process of the porous graphene filter of
FIGS. 7 and 8 are perspective views of the first or the 15 second graphene filter in a film form and a circular form, respectively; and
FIG. 8. In this case, circular frames may be applied to opposite ends of the cylindrical first graphene filter 1 The cylindrical first graphene filter 1 engaged …
FIG. 9 is a block diagram illustrating a filtering apparatus according to some embodiments of the present disclosure.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(withdrawn-currently amended): A method for manufacturing a porous graphene filter, comprising: forming a first graphene filte including-a first holes with a first size on average, carbon atoms and nitro g en atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, during deposition of carbon atoms generated from a f irst carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the first carbon source with the nitrogen atoms causing crystal defects in the first g raphene filter and generated from a f irst substitution source; forming a second graphene filte includin g second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, during deposition of carbon atoms generated from a second carbon source for formation of graphene, by substituting a part of the carbon atoms generated from the second carbon source with the nitrogen atoms causing crystal defects in the second g raphene filter and generated from a second substitution source; arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a la rg est hole among the second holes of the second gr aphene filter is smaller than a size of a smallest hole amo ng the first holes of the first g raphene filter so that each material of a plurality of materials in a mixture is selectively passed and filtered throu g h the first holes and the second holes to filter out a material that can pass throu g h the first holes but not throu a h the second holes between the first g raphene filter and the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein the first and second substitution sources respectively used in the formation of the first graphene filter having the first holes and the second graphene filter having the second holes independently contain a nitrogen atom.
(withdrawn-currently amended): The method of claim 1, wherein the second substitution source is provided in a smaller amount in the formation of the first graphene filter-compared to the first substitution source in the formation of the second graphene filter.
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st carbon source and the second carbon source for the first and the second graphene filters contains at least one selected from the group consisting of methane (CH 4), methanol (CH 3 O H), carbon monoxide (CO), ethane (C 2 H 6), ethylene (C 2 H 4), ethanol (C 2 H 5 O H), acetylene (C 2 H 2), acetone (CH 3 COC H 3), propane (C 3 H 8), propylene (C 3 H 6), butane (C 4 H 10), pentane (C 5 H 12), pentene (C 5 H 10), cyclopentadiene (C 5 H 6), hexane (C 6 H 14), cyclohexane (C 6 H 12), benzene (C 6 H 6), toluene (C 7 H 8), and xylene (C 8 H 10).
(withdrawn-currently amended): The method of claim 1, wherein each of the fir st substitution source and the second substitute source for the first and the second graphene filters contains at least one selected from the group consisting of ammonia (NH 3), hydrazine (N 2 H 4), pyridine (C 5 H 5 N), pyrrole (C 4 H 5 N), acetonitrile (CH 3 CN), nitric acid (HNO 3), silver nitrate (AgNO 3), barium nitrate (Ba(N O 3) 2), N,N-dimethylformamide ((CH 3) 2 NCHO), lithium nitride (Li 3 N), and cyanuric chloride (C 3 C 1 3 N 3).
(withdrawn-currently amended): The method of claim 1, wherein the f irst carbon source and the f irst substitution source for the first graphene filter are simultaneously vaporized when the first graphene filter is formed and the second carbon source and the second substitution source for the second graphene filter are simultaneously vaporized when the second graphene- 5 filter is formed.
: A porous graphene filter, comprising: a first graphene filter including a-first oles with a first size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene filter, the first holes bein g is- formed by substituting a part of carbon atoms at a-covalently bonded portions in the first graphene filter with the nitrogen atoms causin g crystal defects in the first g raphene filter; a second graphene filter includin g second holes with a second size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently boned portions of the carbon atoms of the second g raphene filter, the second holes being i s- formed by substituting a part of carbon atoms at a-covalently bonded portions in the second graphene filter with the nitrogen atoms causing crystal defects in the second g raphene filter; and a filter body in which the first graphene filter and the second graphene filter are immobilized against a path through which a mixture of a plurality of materials moves after the mixture is introduced into the filter body, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole amon g the second holes of the second g raphene filter is smaller than a size of a smallest hole among the first holes of the first g raphene filter so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass through the first holes but not through the second holes between the first g raphene filter and the second graphene filter. Currently amended
: The porous graphene filter of claim 7, wherein the first graphene filter and the second graphene filter are independently in a film or cylindrical form. Original
: A filtering apparatus, comprising: a mixture feeder for intermittently providing a predetermined amount of a mixture consisting of materials different in size from each other; a graphene filter comprising: a filter body equipped with an inlet through which the mixture is introduced into the filter body, and at least two outlets at a side of the filter body; and a first graphene film and a second g raphene film positioned between the outlets within the filter body, for separating the individual materials of the mixture from each other; and a recovery unit, connected to the outlets, for recovering the separated individual materials, wherein the first gr aphene film includes first holes with a first size on avera g e, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the first g raphene film, the first holes being formed by substitutin g a part of carbon atoms at covalently bonded portions in the first graphene film with the nitrogen atoms causing crystal defects in the first graphene film, wherein the second graphene film includes second holes with a second size on average, carbon atoms and nitrogen atoms bonded to broken covalently bonded portions of the carbon atoms of the second graphene film, the second holes bein g formed by substitutin g a part of carbon atoms at covalently bonded portions in the second g raphene film with the nitrogen atoms causing crystal defects in the second graphene film, wherein the first size of the first holes is greater than the second size of the second holes, and wherein a size of a largest hole among the second holes of the second graphene film is smaller than a size of a smallest hole amon g the first holes of the first graphene film so that each material of the mixture is selectively passed and filtered through the first holes and the second holes to filter out a material that can pass throu g h the first holes but not through the second holes between the first graphene film and the second grap hene film. Currently amended
: The filtering apparatus of claim 9, wherein the mixture feeder comprises: a mixture reservoir for supplying the mixture; a container for receiving a predetermined amount of the mixture; and a discharge unit for discharging the mixture from the container. Original
: The filtering apparatus of claim 9, further comprising: electric valves associated with the mixture feeder, the graphene filter, and the recovery unit; and a valve controller for controlling the electric valves. Original
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
porous graphene filter assembly (method claim)
porous graphene filter (product claim)
filtering apparatus with porous graphene films
Materials described outside the worked examples.
nitrogen-doped porous graphene
carbon source
nitrogen substitution source
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 20–330 min | — |
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