Patent
US 9,758,380GRAPHENE QUANTUM DOT AND PREPARING METHOD OF THE SAME
Hyoyoung LEE
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,758,380Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view roughly showing a method for preparing graphene quantum dot in an embodiment of the present disclosure. [0012]
FIG. 2 B is an image of a carbon material dispersed in an organic solvent after a solvothermal redox reaction in an Example of the present disclosure. [0013]
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 7B is an image of the carbon material dispersed in the organic solvent after the sono fenton reaction in an Example of the present disclosure. [0018]
FIG. 8C is an image of the carbon material dispersed in the organic solvent after the sono photo fenton reaction in an Example of the present disclosure. [0019]
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended): A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a solvothermal redox reaction, a sono fenton reaction, or a sono photo fenton reaction of the carbon material.
: The method of claim 1, wherein the carbon material is dispersed in an organic solvent.
: The method of claim 1, wherein the solvothermal redox reaction of the carbon material includes oxidizing the carbon material by adding the potassium peroxymonosulfate to the carbon material, and reducing the oxidized carbon material by performing a hydrothermal reaction.
: The method of claim 1, wherein the sono fenton reaction of the carbon material is performed by sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the sono photo fenton reaction of the carbon material is performed by UV irr adiation and sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the carbon material includes a member selected from the group consisting of graphite, a carbon nanotube, a carbon fiber, charcoal, and combinations thereof.
: Graphene quantum dot, which is prepared by the method according to claim 1, wherein the graphene quantum dot has a size of 100 nm or less and a height of 10 nm or less.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono fenton reaction of the carbon material.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono photo fenton reaction of the carbon material. 3
Materials described outside the worked examples.
potassium peroxymonosulfate (oxone)
KHSO₅
carbon material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
graphene quantum dot lateral size | ≤ 100 nm | graphene quantum dot |
graphene quantum dot height | ≤ 10 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,758,380Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view roughly showing a method for preparing graphene quantum dot in an embodiment of the present disclosure. [0012]
FIG. 2 B is an image of a carbon material dispersed in an organic solvent after a solvothermal redox reaction in an Example of the present disclosure. [0013]
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 7B is an image of the carbon material dispersed in the organic solvent after the sono fenton reaction in an Example of the present disclosure. [0018]
FIG. 8C is an image of the carbon material dispersed in the organic solvent after the sono photo fenton reaction in an Example of the present disclosure. [0019]
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended): A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a solvothermal redox reaction, a sono fenton reaction, or a sono photo fenton reaction of the carbon material.
: The method of claim 1, wherein the carbon material is dispersed in an organic solvent.
: The method of claim 1, wherein the solvothermal redox reaction of the carbon material includes oxidizing the carbon material by adding the potassium peroxymonosulfate to the carbon material, and reducing the oxidized carbon material by performing a hydrothermal reaction.
: The method of claim 1, wherein the sono fenton reaction of the carbon material is performed by sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the sono photo fenton reaction of the carbon material is performed by UV irr adiation and sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the carbon material includes a member selected from the group consisting of graphite, a carbon nanotube, a carbon fiber, charcoal, and combinations thereof.
: Graphene quantum dot, which is prepared by the method according to claim 1, wherein the graphene quantum dot has a size of 100 nm or less and a height of 10 nm or less.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono fenton reaction of the carbon material.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono photo fenton reaction of the carbon material. 3
Materials described outside the worked examples.
potassium peroxymonosulfate (oxone)
KHSO₅
carbon material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
graphene quantum dot lateral size | ≤ 100 nm | graphene quantum dot |
graphene quantum dot height | ≤ 10 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,758,380Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view roughly showing a method for preparing graphene quantum dot in an embodiment of the present disclosure. [0012]
FIG. 2 B is an image of a carbon material dispersed in an organic solvent after a solvothermal redox reaction in an Example of the present disclosure. [0013]
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 7B is an image of the carbon material dispersed in the organic solvent after the sono fenton reaction in an Example of the present disclosure. [0018]
FIG. 8C is an image of the carbon material dispersed in the organic solvent after the sono photo fenton reaction in an Example of the present disclosure. [0019]
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended): A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a solvothermal redox reaction, a sono fenton reaction, or a sono photo fenton reaction of the carbon material.
: The method of claim 1, wherein the carbon material is dispersed in an organic solvent.
: The method of claim 1, wherein the solvothermal redox reaction of the carbon material includes oxidizing the carbon material by adding the potassium peroxymonosulfate to the carbon material, and reducing the oxidized carbon material by performing a hydrothermal reaction.
: The method of claim 1, wherein the sono fenton reaction of the carbon material is performed by sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the sono photo fenton reaction of the carbon material is performed by UV irr adiation and sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the carbon material includes a member selected from the group consisting of graphite, a carbon nanotube, a carbon fiber, charcoal, and combinations thereof.
: Graphene quantum dot, which is prepared by the method according to claim 1, wherein the graphene quantum dot has a size of 100 nm or less and a height of 10 nm or less.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono fenton reaction of the carbon material.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono photo fenton reaction of the carbon material. 3
Materials described outside the worked examples.
potassium peroxymonosulfate (oxone)
KHSO₅
carbon material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
graphene quantum dot lateral size | ≤ 100 nm | graphene quantum dot |
graphene quantum dot height | ≤ 10 nm |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,758,380Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view roughly showing a method for preparing graphene quantum dot in an embodiment of the present disclosure. [0012]
FIG. 2 B is an image of a carbon material dispersed in an organic solvent after a solvothermal redox reaction in an Example of the present disclosure. [0013]
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 7B is an image of the carbon material dispersed in the organic solvent after the sono fenton reaction in an Example of the present disclosure. [0018]
FIG. 8C is an image of the carbon material dispersed in the organic solvent after the sono photo fenton reaction in an Example of the present disclosure. [0019]
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Cu rr ently Amended): A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a solvothermal redox reaction, a sono fenton reaction, or a sono photo fenton reaction of the carbon material.
: The method of claim 1, wherein the carbon material is dispersed in an organic solvent.
: The method of claim 1, wherein the solvothermal redox reaction of the carbon material includes oxidizing the carbon material by adding the potassium peroxymonosulfate to the carbon material, and reducing the oxidized carbon material by performing a hydrothermal reaction.
: The method of claim 1, wherein the sono fenton reaction of the carbon material is performed by sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the sono photo fenton reaction of the carbon material is performed by UV irr adiation and sonication to the carbon material to which the potassium peroxymonosulfate has been added.
: The method of claim 1, wherein the carbon material includes a member selected from the group consisting of graphite, a carbon nanotube, a carbon fiber, charcoal, and combinations thereof.
: Graphene quantum dot, which is prepared by the method according to claim 1, wherein the graphene quantum dot has a size of 100 nm or less and a height of 10 nm or less.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono fenton reaction of the carbon material.
: A method for preparing graphene quantum dot, comprising: adding potassium peroxymonosulfate (oxone) to a carbon material in a neutral solution to form graphene quantum dot through a sono photo fenton reaction of the carbon material. 3
Materials described outside the worked examples.
potassium peroxymonosulfate (oxone)
KHSO₅
carbon material
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3 B are high-resolution transmission electron microscopy (HR- TEM) images obtained from measuring a size of the graphene quantum dot prepared by using the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
graphene quantum dot lateral size | ≤ 100 nm | graphene quantum dot |
graphene quantum dot height | ≤ 10 nm |
Related documents with shared materials, methods, properties, or citations.
graphene quantum dot
organic solvent
dimethylformamide
C₃H₇NO
alcohol containing 1 to 5 carbon atoms
dichloromethane
CH₂Cl₂
N-methylpyrrolidone
C₅H₉NO
graphite
carbon nanotube
carbon fiber
charcoal
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Thickness | 2–8 nm | — |
Thickness | 1–3 nm | — |
Thickness | 1–90 nm | — |
Thickness | 1–80 nm | — |
Thickness | 1–70 nm | — |
Thickness | 1–60 nm | — |
Thickness | 1–50 nm | — |
Thickness | 1–40 nm | — |
Thickness | 1–30 nm | — |
Thickness | 1–20 nm | — |
Thickness | 1–10 nm | — |
Thickness | 1–5 nm | — |
Thickness | 1–9 nm | — |
Thickness | 1–7 nm | — |
Thickness | 1–6 nm | — |
Thickness | 1–4 nm | — |
Thickness | 1–2 nm | — |
graphene quantum dot
organic solvent
dimethylformamide
C₃H₇NO
alcohol containing 1 to 5 carbon atoms
dichloromethane
CH₂Cl₂
N-methylpyrrolidone
C₅H₉NO
graphite
carbon nanotube
carbon fiber
charcoal
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Thickness | 2–8 nm | — |
Thickness | 1–3 nm | — |
Thickness | 1–90 nm | — |
Thickness | 1–80 nm | — |
Thickness | 1–70 nm | — |
Thickness | 1–60 nm | — |
Thickness | 1–50 nm | — |
Thickness | 1–40 nm | — |
Thickness | 1–30 nm | — |
Thickness | 1–20 nm | — |
Thickness | 1–10 nm | — |
Thickness | 1–5 nm | — |
Thickness | 1–9 nm | — |
Thickness | 1–7 nm | — |
Thickness | 1–6 nm | — |
Thickness | 1–4 nm | — |
Thickness | 1–2 nm | — |
graphene quantum dot
organic solvent
dimethylformamide
C₃H₇NO
alcohol containing 1 to 5 carbon atoms
dichloromethane
CH₂Cl₂
N-methylpyrrolidone
C₅H₉NO
graphite
carbon nanotube
carbon fiber
charcoal
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Thickness | 2–8 nm | — |
Thickness | 1–3 nm | — |
Thickness | 1–90 nm | — |
Thickness | 1–80 nm | — |
Thickness | 1–70 nm | — |
Thickness | 1–60 nm | — |
Thickness | 1–50 nm | — |
Thickness | 1–40 nm | — |
Thickness | 1–30 nm | — |
Thickness | 1–20 nm | — |
Thickness | 1–10 nm | — |
Thickness | 1–5 nm | — |
Thickness | 1–9 nm | — |
Thickness | 1–7 nm | — |
Thickness | 1–6 nm | — |
Thickness | 1–4 nm | — |
Thickness | 1–2 nm | — |
graphene quantum dot
organic solvent
dimethylformamide
C₃H₇NO
alcohol containing 1 to 5 carbon atoms
dichloromethane
CH₂Cl₂
N-methylpyrrolidone
C₅H₉NO
graphite
carbon nanotube
carbon fiber
charcoal
FIG. 4D are graphs for sizes and heights of graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 5D are photoluminescence (PL) spectra of the graphene quantum dots, which were prepared from graphite, a carbon nanotube, a carbon fiber, and charcoal, …
FIG. 6D are SEM images of graphite, a carbon nanotube, a carbon fiber, and charcoal, respectively, as a starting material, which are used in the solvothermal …
FIG. 9B are HR-TEM images of the graphene quantum dot prepared from the graphite by using the sono fenton method in an Example of the present disclosure. [0020]
FIG. 10B is a HR-TEM image of the graphene quantum dot prepared from the graphene oxide by using the sono photo fenton reaction in an Example of the present …
FIG. 11 is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphite by using the sono fenton method, as measured by …
FIG. 12B is a graph for a size and a height of the graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 13A is an ultraviolet-visible (UV-vis) absorption spectrum of the graphene quantum dot prepared from the graphite by using the sono fenton method in an …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 14B is a UV-vis absorption spectrum of the graphene quantum dot prepared from the graphene oxide through the sono photo fenton reaction in an Example of …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 15B is an oxygen ratio analysis graph of the graphene quantum dot, which was prepared from the graphite through the sono fenton method, as measured by …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 16B is an oxygen ratio analysis graph of the 6 graphene quantum dot, which was prepared from the graphene oxide through the sono photo fenton reaction, as …
FIG. 17 is a SEM image of the graphite in an Example of the present disclosure. [0028]
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
FIG. 18A is a SEM image of the graphene oxide in an Example of the present disclosure, and
Thickness | 2–8 nm | — |
Thickness | 1–3 nm | — |
Thickness | 1–90 nm | — |
Thickness | 1–80 nm | — |
Thickness | 1–70 nm | — |
Thickness | 1–60 nm | — |
Thickness | 1–50 nm | — |
Thickness | 1–40 nm | — |
Thickness | 1–30 nm | — |
Thickness | 1–20 nm | — |
Thickness | 1–10 nm | — |
Thickness | 1–5 nm | — |
Thickness | 1–9 nm | — |
Thickness | 1–7 nm | — |
Thickness | 1–6 nm | — |
Thickness | 1–4 nm | — |
Thickness | 1–2 nm | — |