CN104674289A - Method for preparing graphene by limestone - Google Patents
Method for preparing graphene by limestone Download PDFInfo
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- CN104674289A CN104674289A CN201410753841.XA CN201410753841A CN104674289A CN 104674289 A CN104674289 A CN 104674289A CN 201410753841 A CN201410753841 A CN 201410753841A CN 104674289 A CN104674289 A CN 104674289A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
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- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a method for preparing graphene by limestone, and belongs to the carbon material preparation field. In order to solve the problems that the current preparation requirements are high, the preparation process is long, harms are caused to the environment, and the invention provides a graphene preparation method which is simple in preparation process, low in equipment requirement and wide in raw material source. The preparation method is used for electrolyzing and reducing molten calcium carbonate at a high temperature to prepare the graphene. The preparation method is simple in process, low in equipment treatment requirement, wide in raw material source, low in price, harmless to the environment in a processing process, and is good in application prospect.
Description
Technical field
The invention belongs to carbon material preparation field.
Background technology
Graphene causes the extensive concern of people in a lot of fields, as nanoelectronics, sensor, and electrical condenser and matrix material.But how scale prepares large size, high-quality Graphene is still one a difficult problem to be solved.Realize the widespread use of Graphene at numerous areas, the Graphene that high-quality is prepared in mass-producing is the thermoelectricity studied at present.In graphene preparation method up to now, the requirement of mechanically peel method to equipment is high, and reliably cannot produce the Graphene sample of big scale; Chemical Vapor deposition process and epitaxial orientation growth method need to use expensive rare metal and temperature of reaction is higher, severe reaction conditions; Arc-over also needs hot conditions, and yields poorly, and is therefore also not suitable for producing in enormous quantities; The chemical oxidation dispersion method of crystalline flake graphite, technological process is simple, and output is large, and cost is low, can be mass-produced.But this technology needs to use strong oxidizer, produces a large amount of spent acid and waste water in this method, environment is produced and pollutes greatly.Need the graphene oxide of gained to reduce in addition, now conventional reductive agent is hydrazine hydrate or sodium borohydride, and these chemical substances are harmful to operator and environment.
Summary of the invention
The object of this invention is to provide a kind of process simple, the graphene preparation method that equipment requirements is low.
The present invention is achieved by the following technical programs: a kind of method utilizing Wingdale to prepare Graphene, take 12g calcium carbonate and 20g Quilonum Retard ground and mixed evenly after add in crucible, connect electrode cable, and cover mouth of pot with asbestos gauge, being sent into temperature is in the retort furnace of 750 DEG C, after electrolytic reaction 5h, take out crucible, naturally after being down to room temperature, product in crucible is dissolved with 6mol/LHCl, centrifuge washing product to supernatant liquor is neutral repeatedly, and 60 DEG C of oven dry in air dry oven, obtain the black alkene powdered product of black.
Described electrolysis voltage is 1.5V.
The present invention has following beneficial effect:
Preparation process is simple, low to the requirement of equipment, and raw material sources are wide, and price is low.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: preparation process of the present invention is: take 12g calcium carbonate and 20g Quilonum Retard ground and mixed evenly after add in crucible, connect electrode cable, and cover mouth of pot with asbestos gauge, being sent into temperature is in the retort furnace of 750 DEG C, electrolytic reaction 5h, electrolysis voltage is 1.5V, crucible is taken out after electrolysis, naturally after being down to room temperature, product in crucible is dissolved with 6mol/LHCl, centrifuge washing product to supernatant liquor is neutral repeatedly, and 60 DEG C of oven dry in air dry oven, obtain the black alkene powdered product of black.
Its principle is: CaCO
3(L) CaO (S)+C (S)+O
2g () is under the existence of fusing assistant Quilonum Retard, calcium carbonate is molten state when temperature of reaction 750 DEG C, calcium ion and carbanion is there is in system, so the high-valence state carbon in carbanion can obtain electronics and be reduced raw simple substance carbon, the oxygen element oxidized generation simple substance oxygen of lower valency simultaneously.
Preparation method of the present invention, process is simple, and treatment facility requires low, and raw material sources are wide, and price is low, and treating processes environmental sound, has a good application prospect.
Above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. the method utilizing Wingdale to prepare Graphene, it is characterized in that: take 12g calcium carbonate and 20g Quilonum Retard ground and mixed evenly after add in crucible, connect electrode cable, and cover mouth of pot with asbestos gauge, being sent into temperature is in the retort furnace of 750 DEG C, after electrolytic reaction 5h, take out crucible, naturally after being down to room temperature, product in crucible is dissolved with 6mol/LHCl, centrifuge washing product to supernatant liquor is neutral repeatedly, and 60 DEG C of oven dry in air dry oven, obtain the black alkene powdered product of black.
2. utilize Wingdale to prepare the method for Graphene as claimed in claim 1, it is characterized in that: described electrolysis voltage is 1.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753841.XA CN104674289A (en) | 2014-12-11 | 2014-12-11 | Method for preparing graphene by limestone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753841.XA CN104674289A (en) | 2014-12-11 | 2014-12-11 | Method for preparing graphene by limestone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104674289A true CN104674289A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410753841.XA Pending CN104674289A (en) | 2014-12-11 | 2014-12-11 | Method for preparing graphene by limestone |
Country Status (1)
| Country | Link |
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| CN (1) | CN104674289A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312678A (en) * | 2017-02-21 | 2019-10-08 | C2Cnt有限责任公司 | It is used to prepare the method and system of the carbon nanomaterial of doping |
-
2014
- 2014-12-11 CN CN201410753841.XA patent/CN104674289A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312678A (en) * | 2017-02-21 | 2019-10-08 | C2Cnt有限责任公司 | It is used to prepare the method and system of the carbon nanomaterial of doping |
| US11542609B2 (en) * | 2017-02-21 | 2023-01-03 | C2Cnt Llc | Methods and systems for production of doped carbon nanomaterials |
| US11732368B2 (en) | 2017-02-21 | 2023-08-22 | C2Cnt Llc | Methods and systems for production of doped carbon nanomaterials |
| US11746424B2 (en) | 2017-02-21 | 2023-09-05 | C2Cnt Llc | Methods and systems for production of doped carbon nanomaterials |
| CN110312678B (en) * | 2017-02-21 | 2023-12-29 | C2Cnt有限责任公司 | Method and system for preparing doped carbon nanomaterial |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
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| WD01 | Invention patent application deemed withdrawn after publication |