Patent
US 8,865,932FLUORINATED GRAPHENE OXIDE AND PREPARATION METHOD THEREOF
Mingjie Zhou
US
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US 8,865,932Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Amendments to the Claims This listing of claims will replace all prior versions and listings of claims in the application: Listing of Claims:
The fluorinated graphene oxide as claimed in claim 1, wherein, mass percent of fluorine is in the range of 9% & l t; F % < 27%, mass percent of carbon is in the range of 55% & lt; C% < 75%, mass percent of oxygen is in the r ange of 18% < O% < 27%.
A preparation method of fluorinated graphene oxide, wherein, comprising: providing graphite; preparing graphene oxide by using said graphite; obtaining said fluorinated graphene oxide by reacting graphene oxide with mixed gases of N 2 and F 2 at reaction temperature 20 ~200° C for 0.5 ~ 24h.
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein in said mixed gases, volume percent of F 2 is in the range of 5 ~30%. 2
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein reaction t empera t ure is in the range of 50 ~150°C, reaction tim e is in the range of 2 ~ 20h.
The preparation method of fluorinated graphene oxide as claimed in any one of the laim° from 3 to Q claim 3, the step of preparing graphene oxide by using said graphite comprises: adding said graphite, potassium persulfa t e and phosphorus pen t oxide by mass ra t io of 2:1:1 in t o concen trat ed sulfuric acid a t 60 ~85°C, st irring well and then cooling naturally, washing t o neu t rali t y, then drying t o obtain pre t rea ted mixture; adding said pre t rea t ed mixture and potassium permanganate in to concen trat ed sulfuric acid below 20 ° C, then he at ing in an oil-bath a t 30 ~40° C for
The preparation method of fluorinated graphene oxide as claimed in any o of th m° from 3 to Q claim 3, wherein, degree of purity of said graphite is higher than 99.5%.
Embodiments described in the patent, grouped by the materials and process steps they use.
10 materials2 process steps
Fluorinated graphene oxide was prepared starting from 99.5% pure graphite. Graphene oxide was prepared by improved Hummers method: 20g graphite powder (50-mesh), 10g potassium persulfate, 10g phosphorus pentoxide were added to concentrated H₂SO₄ at 80°C, stirred, cooled >6h, washed to neutrality, dried. Dried sample was added to 230 mL concentrated H₂SO₄ at 0°C, then 60g KMnO₄ added, kept below 20°C, then oil-bath at 35°C for 2h; 920 mL deionized water added, after 15 min, 2.8L deionized water containing 50 mL 30% H₂O₂ added; mixture filtered, washed with 5L of 5–10% HCl, vacuum dried at 60°C for 48h. Fluorinated graphene oxide was prepared by placing dried graphene oxide in reactor, purging with dry N₂ for 2h, then flowing N₂/F₂ mixed gas (10 vol% F₂) at 100°C for 12h. XPS analysis showed mass percent F = 40%, mass percent O = 15%.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Mass percent of fluorine in fluorinated graphene oxide (Example 1, XPS) | 40 mass% | fluorinated graphene oxide |
Mass percent of oxygen in fluorinated graphene oxide (Example 1, XPS) | 15 mass% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,865,932Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Amendments to the Claims This listing of claims will replace all prior versions and listings of claims in the application: Listing of Claims:
The fluorinated graphene oxide as claimed in claim 1, wherein, mass percent of fluorine is in the range of 9% & l t; F % < 27%, mass percent of carbon is in the range of 55% & lt; C% < 75%, mass percent of oxygen is in the r ange of 18% < O% < 27%.
A preparation method of fluorinated graphene oxide, wherein, comprising: providing graphite; preparing graphene oxide by using said graphite; obtaining said fluorinated graphene oxide by reacting graphene oxide with mixed gases of N 2 and F 2 at reaction temperature 20 ~200° C for 0.5 ~ 24h.
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein in said mixed gases, volume percent of F 2 is in the range of 5 ~30%. 2
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein reaction t empera t ure is in the range of 50 ~150°C, reaction tim e is in the range of 2 ~ 20h.
The preparation method of fluorinated graphene oxide as claimed in any one of the laim° from 3 to Q claim 3, the step of preparing graphene oxide by using said graphite comprises: adding said graphite, potassium persulfa t e and phosphorus pen t oxide by mass ra t io of 2:1:1 in t o concen trat ed sulfuric acid a t 60 ~85°C, st irring well and then cooling naturally, washing t o neu t rali t y, then drying t o obtain pre t rea ted mixture; adding said pre t rea t ed mixture and potassium permanganate in to concen trat ed sulfuric acid below 20 ° C, then he at ing in an oil-bath a t 30 ~40° C for
The preparation method of fluorinated graphene oxide as claimed in any o of th m° from 3 to Q claim 3, wherein, degree of purity of said graphite is higher than 99.5%.
Embodiments described in the patent, grouped by the materials and process steps they use.
10 materials2 process steps
Fluorinated graphene oxide was prepared starting from 99.5% pure graphite. Graphene oxide was prepared by improved Hummers method: 20g graphite powder (50-mesh), 10g potassium persulfate, 10g phosphorus pentoxide were added to concentrated H₂SO₄ at 80°C, stirred, cooled >6h, washed to neutrality, dried. Dried sample was added to 230 mL concentrated H₂SO₄ at 0°C, then 60g KMnO₄ added, kept below 20°C, then oil-bath at 35°C for 2h; 920 mL deionized water added, after 15 min, 2.8L deionized water containing 50 mL 30% H₂O₂ added; mixture filtered, washed with 5L of 5–10% HCl, vacuum dried at 60°C for 48h. Fluorinated graphene oxide was prepared by placing dried graphene oxide in reactor, purging with dry N₂ for 2h, then flowing N₂/F₂ mixed gas (10 vol% F₂) at 100°C for 12h. XPS analysis showed mass percent F = 40%, mass percent O = 15%.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Mass percent of fluorine in fluorinated graphene oxide (Example 1, XPS) | 40 mass% | fluorinated graphene oxide |
Mass percent of oxygen in fluorinated graphene oxide (Example 1, XPS) | 15 mass% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,865,932Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Amendments to the Claims This listing of claims will replace all prior versions and listings of claims in the application: Listing of Claims:
The fluorinated graphene oxide as claimed in claim 1, wherein, mass percent of fluorine is in the range of 9% & l t; F % < 27%, mass percent of carbon is in the range of 55% & lt; C% < 75%, mass percent of oxygen is in the r ange of 18% < O% < 27%.
A preparation method of fluorinated graphene oxide, wherein, comprising: providing graphite; preparing graphene oxide by using said graphite; obtaining said fluorinated graphene oxide by reacting graphene oxide with mixed gases of N 2 and F 2 at reaction temperature 20 ~200° C for 0.5 ~ 24h.
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein in said mixed gases, volume percent of F 2 is in the range of 5 ~30%. 2
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein reaction t empera t ure is in the range of 50 ~150°C, reaction tim e is in the range of 2 ~ 20h.
The preparation method of fluorinated graphene oxide as claimed in any one of the laim° from 3 to Q claim 3, the step of preparing graphene oxide by using said graphite comprises: adding said graphite, potassium persulfa t e and phosphorus pen t oxide by mass ra t io of 2:1:1 in t o concen trat ed sulfuric acid a t 60 ~85°C, st irring well and then cooling naturally, washing t o neu t rali t y, then drying t o obtain pre t rea ted mixture; adding said pre t rea t ed mixture and potassium permanganate in to concen trat ed sulfuric acid below 20 ° C, then he at ing in an oil-bath a t 30 ~40° C for
The preparation method of fluorinated graphene oxide as claimed in any o of th m° from 3 to Q claim 3, wherein, degree of purity of said graphite is higher than 99.5%.
Embodiments described in the patent, grouped by the materials and process steps they use.
10 materials2 process steps
Fluorinated graphene oxide was prepared starting from 99.5% pure graphite. Graphene oxide was prepared by improved Hummers method: 20g graphite powder (50-mesh), 10g potassium persulfate, 10g phosphorus pentoxide were added to concentrated H₂SO₄ at 80°C, stirred, cooled >6h, washed to neutrality, dried. Dried sample was added to 230 mL concentrated H₂SO₄ at 0°C, then 60g KMnO₄ added, kept below 20°C, then oil-bath at 35°C for 2h; 920 mL deionized water added, after 15 min, 2.8L deionized water containing 50 mL 30% H₂O₂ added; mixture filtered, washed with 5L of 5–10% HCl, vacuum dried at 60°C for 48h. Fluorinated graphene oxide was prepared by placing dried graphene oxide in reactor, purging with dry N₂ for 2h, then flowing N₂/F₂ mixed gas (10 vol% F₂) at 100°C for 12h. XPS analysis showed mass percent F = 40%, mass percent O = 15%.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Mass percent of fluorine in fluorinated graphene oxide (Example 1, XPS) | 40 mass% | fluorinated graphene oxide |
Mass percent of oxygen in fluorinated graphene oxide (Example 1, XPS) | 15 mass% |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,865,932Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Amendments to the Claims This listing of claims will replace all prior versions and listings of claims in the application: Listing of Claims:
The fluorinated graphene oxide as claimed in claim 1, wherein, mass percent of fluorine is in the range of 9% & l t; F % < 27%, mass percent of carbon is in the range of 55% & lt; C% < 75%, mass percent of oxygen is in the r ange of 18% < O% < 27%.
A preparation method of fluorinated graphene oxide, wherein, comprising: providing graphite; preparing graphene oxide by using said graphite; obtaining said fluorinated graphene oxide by reacting graphene oxide with mixed gases of N 2 and F 2 at reaction temperature 20 ~200° C for 0.5 ~ 24h.
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein in said mixed gases, volume percent of F 2 is in the range of 5 ~30%. 2
The preparation method of fluorinated graphene oxide as claimed in claim 3, wherein reaction t empera t ure is in the range of 50 ~150°C, reaction tim e is in the range of 2 ~ 20h.
The preparation method of fluorinated graphene oxide as claimed in any one of the laim° from 3 to Q claim 3, the step of preparing graphene oxide by using said graphite comprises: adding said graphite, potassium persulfa t e and phosphorus pen t oxide by mass ra t io of 2:1:1 in t o concen trat ed sulfuric acid a t 60 ~85°C, st irring well and then cooling naturally, washing t o neu t rali t y, then drying t o obtain pre t rea ted mixture; adding said pre t rea t ed mixture and potassium permanganate in to concen trat ed sulfuric acid below 20 ° C, then he at ing in an oil-bath a t 30 ~40° C for
The preparation method of fluorinated graphene oxide as claimed in any o of th m° from 3 to Q claim 3, wherein, degree of purity of said graphite is higher than 99.5%.
Embodiments described in the patent, grouped by the materials and process steps they use.
10 materials2 process steps
Fluorinated graphene oxide was prepared starting from 99.5% pure graphite. Graphene oxide was prepared by improved Hummers method: 20g graphite powder (50-mesh), 10g potassium persulfate, 10g phosphorus pentoxide were added to concentrated H₂SO₄ at 80°C, stirred, cooled >6h, washed to neutrality, dried. Dried sample was added to 230 mL concentrated H₂SO₄ at 0°C, then 60g KMnO₄ added, kept below 20°C, then oil-bath at 35°C for 2h; 920 mL deionized water added, after 15 min, 2.8L deionized water containing 50 mL 30% H₂O₂ added; mixture filtered, washed with 5L of 5–10% HCl, vacuum dried at 60°C for 48h. Fluorinated graphene oxide was prepared by placing dried graphene oxide in reactor, purging with dry N₂ for 2h, then flowing N₂/F₂ mixed gas (10 vol% F₂) at 100°C for 12h. XPS analysis showed mass percent F = 40%, mass percent O = 15%.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Mass percent of fluorine in fluorinated graphene oxide (Example 1, XPS) | 40 mass% | fluorinated graphene oxide |
Mass percent of oxygen in fluorinated graphene oxide (Example 1, XPS) | 15 mass% |
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