CN106744836A - A kind of method that utilization biomass material prepares Graphene - Google Patents
A kind of method that utilization biomass material prepares Graphene Download PDFInfo
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- CN106744836A CN106744836A CN201611083909.3A CN201611083909A CN106744836A CN 106744836 A CN106744836 A CN 106744836A CN 201611083909 A CN201611083909 A CN 201611083909A CN 106744836 A CN106744836 A CN 106744836A
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- biomass material
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
Abstract
A kind of method that utilization biomass material prepares Graphene.Mainly include the following steps that：Removal of impurities is carried out to biomass material, then it is crushed；Treated biomass material is mixed with chemical solvent, centre addition catalyst；Above-mentioned treated biomass material is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.The preparation method of the Graphene that the present invention is provided is environmentally safe, and with biomass material as carbon source, the cost of raw material of carbon source is low and is readily available, and solves existing carbon source high cost, is unfavorable for the shortcoming of heavy industrialization.
Description
Technical field：
The invention belongs to carbon material technical field, more particularly to a kind of method that utilization biomass material prepares Graphene.
Background technology
Graphene（Graphene）It is a kind of new material of the individual layer laminated structure being made up of carbon atom.It is a kind of former by carbon
Son is with the flat film that sp2 hybridized orbits composition hexangle type is in honeycomb lattice, the two-dimensional material of only one of which carbon atom thickness.Stone
Black alkene is considered as always hypothetical structure, it is impossible to independent stable existence, until, Univ Manchester UK's physics in 2004
Scholar An Delie et al. successfully isolates Graphene from graphite in an experiment, and confirms that it can be with individualism, two people
Because " in the initiative experiment of two-dimensional graphene material " serves as reasons, Nobel Prize in physics in 2010 is obtained jointly
It is but also most hard nano material that Graphene is currently world most thin, and it is almost fully transparent, only absorbs 2.3%
Light；Thermal conductivity factor is up to 5300W/mK, and higher than CNT and diamond, its electron mobility exceedes nano-sized carbon under normal temperature
Pipe or silicon crystal, and resistivity about 10-6Ω cm, it is lower than copper or silver, it is the minimum material of current world resistivity.Because
Its resistivity is extremely low, and the speed of electron transfer is exceedingly fast, therefore is expected to can be used to develop thinner, conductive speed new faster
Generation electronic component or transistor.Because Graphene is substantially a kind of transparent, good conductor, it also is adapted for transparent for manufacturing
Touch Screen, even tabula rasa, solar cell.
At present, grapheme material powder, such as mechanical stripping method, oxidation-reduction method, crystalline substance can be prepared using various methods
External epitaxial growth, chemical vapour deposition technique, organic synthesis method and stripping CNT method etc..In these methods, machinery stripping
It is very low from method and epitaxial growth method preparation efficiency, it is difficult to meet large-scale needs.Although chemical vapour deposition technique can be obtained
The continuous graphene film of large scale, but suitable for micro-nano electronic device or transparent conductive film, can not but meet energy storage material
And the extensive demand in functional composite material field.Oxidation-reduction method prepares grapheme material powder and is relatively easy to realize, is system
The common method of standby grapheme material powder, but the method uses a large amount of strong acid and oxidation during Graphene is prepared
Agent, it is serious to graphenic surface destruction, and environment is easily polluted, therefore be not suitable for the Graphene preparation of extensive industrialization.
The content of the invention
The system of the Graphene provided the invention provides a kind of method that utilization biomass material prepares Graphene, the present invention
Preparation Method is with biomass material as raw material, and preparation method environmental pollution is smaller, is conducive to the industrialization development of Graphene.
The invention provides a kind of method that utilization biomass material prepares Graphene, comprise the following steps：
（1）Removal of impurities is carried out to biomass material, then it is crushed；
（2）Treated biomass material is mixed with chemical solvent, centre addition catalyst；
（3）Above-mentioned treated biomass material is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.
The step（1）In biomass material be maize straw, wheat stalk, careless class, shell class and agricultural byproducts add
One or more mixture in waste residue during work etc..
The step（2）In chemical solvent be any proportioning of the one or two kinds of solvent in nitric acid or sulfuric acid.
The step（2）In catalyst be silicic acid, its addition is with the mass ratio of biomass material：（0.001-
0.01）：1.
The step（3）In high-temperature heating program be：100 DEG C of insulation 1h；250 DEG C of insulation 1-2h；550 DEG C of insulation 2-
4h；850 DEG C of insulation 16-20h.
The step（3）In ultra-high pressure condition be：Pressure 400-600 MPa, dwell time 25-60 min, pressurization temperature
50-85 DEG C of degree.
The present invention has advantages below：
（1）Preparing Graphene characteristic according to the preparation method described in this patent scheme is：The specific surface area of Graphene is
1800~3000cm3/g；The aperture of Graphene is 1~18nm；
（2）This patent prepares Graphene by raw material of biomass material so that biomass material is preferably processed, and significantly
The added value of biomass material is improve, contributes to the fast lifting of China's rural economy.
Specific embodiment
The present embodiment is further illustrating rather than the limitation to this patent to this patent.
Embodiment 1
（1）With maize straw as biomass material, crushed after removal of impurities is carried out to it；
（2）The maize straw of crushing and chemical solvent are mixed, centre addition catalyst；
（3）Above-mentioned treated maize straw is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.
The step（2）In chemical solvent be nitric acid.
The step（2）In catalyst be silicic acid, its addition is with the mass ratio of biomass material： 0.001：1.
The step（3）In high-temperature heating program be：100 DEG C of insulation 1h；250 DEG C of insulation 1h；550 DEG C of insulation 2h；850
DEG C insulation 16h.
The step（3）In ultra-high pressure condition be：The MPa of pressure 400, the min of dwell time 25,50 DEG C of pressed temperature.
Embodiment 2
（1）With wheat stalk as biomass material, crushed after removal of impurities is carried out to it；
（2）The biomass material of crushing and chemical solvent are mixed, centre addition catalyst；
（3）Above-mentioned treated biomass material is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.
The step（2）In chemical solvent be sulfuric acid.
The step（2）In catalyst be silicic acid, its addition is with the mass ratio of biomass material：0.005：1.
The step（3）In high-temperature heating program be：100 DEG C of insulation 1h；250 DEG C of insulation 2h；550 DEG C of insulation 4h；850
DEG C insulation 20h.
The step（3）In ultra-high pressure condition be：The MPa of pressure 500, the min of dwell time 40,65 DEG C of pressed temperature.
Embodiment 3
（1）With rice husk and weeds mixture as biomass material, crushed after removal of impurities is carried out to it；；
（2）The biomass material of crushing and chemical solvent are mixed, centre addition catalyst；
（3）Above-mentioned treated biomass material is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.
The step（2）In chemical solvent be the mixed liquor of nitric acid and sulfuric acid, its mass ratio is 1:1.
The step（2）In catalyst be silicic acid, its addition is with the mass ratio of biomass material：0.002：1.
The step（3）In high-temperature heating program be：100 DEG C of insulation 1h；250 DEG C of insulation 1.5h；550 DEG C of insulation 3h；
850 DEG C of insulation 18h.
The step（3）In ultra-high pressure condition be：The MPa of pressure 600, the min of dwell time 60,85 DEG C of pressed temperature.
Claims (6)
1. a kind of method that utilization biomass material prepares Graphene, comprises the following steps：
（1）Removal of impurities is carried out to biomass material, then it is crushed；
（2）Treated biomass material is mixed with chemical solvent, centre addition catalyst；
（3）Above-mentioned treated biomass material is carried out into high-temperature heating, and after obtain Graphene through ultra high pressure treatment.
2. the method that a kind of utilization biomass material according to claim 1 prepares Graphene, it is characterised in that the step
Suddenly（1）In biomass material be maize straw, the waste residue during wheat stalk, careless class, shell class and agricultural byproducts processing
One or more mixture in.
3. the method that a kind of utilization biomass material according to claim 1 prepares Graphene, it is characterised in that the step
Suddenly（2）In chemical solvent be any proportioning of the one or two kinds of solvent in nitric acid or sulfuric acid.
4. the method that a kind of utilization biomass material according to claim 1 prepares Graphene, it is characterised in that the step
Suddenly（2）In catalyst be silicic acid, its addition is with the mass ratio of biomass material：（0.001-0.01）：1.
5. the method that a kind of utilization biomass material according to claim 1 prepares Graphene, it is characterised in that the step
Suddenly（3）In high-temperature heating program be：100 DEG C of insulation 1h；250 DEG C of insulation 1-2h；550 DEG C of insulation 2-4h；850 DEG C of insulation 16-
20h。
6. the method that a kind of utilization biomass material according to claim 1 prepares Graphene, it is characterised in that the step
Suddenly（3）In ultra-high pressure condition be：Pressure 400-600 MPa, dwell time 25-60 min, 50-85 DEG C of pressed temperature.
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| CN201611083909.3A CN106744836A (en) | 2016-11-30 | 2016-11-30 | A kind of method that utilization biomass material prepares Graphene |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758644A (en) * | 2017-10-13 | 2018-03-06 | 杭州高烯科技有限公司 | A kind of method that super-pressure thermal reduction prepares graphene film |
| CN110668430A (en) * | 2019-11-12 | 2020-01-10 | 沈阳中科腐蚀控制工程技术中心 | Method for preparing graphene by fermenting graphene with graphene |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016341A (en) * | 2014-07-01 | 2014-09-03 | 济南圣泉集团股份有限公司 | Preparation method of porous graphene |
| CN104386684A (en) * | 2014-12-16 | 2015-03-04 | 中国科学院宁波材料技术与工程研究所 | Preparation method of graphene and graphene |
-
2016
- 2016-11-30 CN CN201611083909.3A patent/CN106744836A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016341A (en) * | 2014-07-01 | 2014-09-03 | 济南圣泉集团股份有限公司 | Preparation method of porous graphene |
| CN104386684A (en) * | 2014-12-16 | 2015-03-04 | 中国科学院宁波材料技术与工程研究所 | Preparation method of graphene and graphene |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758644A (en) * | 2017-10-13 | 2018-03-06 | 杭州高烯科技有限公司 | A kind of method that super-pressure thermal reduction prepares graphene film |
| CN110668430A (en) * | 2019-11-12 | 2020-01-10 | 沈阳中科腐蚀控制工程技术中心 | Method for preparing graphene by fermenting graphene with graphene |
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