CN116281985A - Method for preparing high-dispersity graphene based on physical modification means - Google Patents
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000004048 modification Effects 0.000 title claims abstract description 21
- 238000012986 modification Methods 0.000 title claims abstract description 21
- 239000006185 dispersion Substances 0.000 claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 11
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 11
- 230000015271 coagulation Effects 0.000 claims abstract description 7
- 238000005345 coagulation Methods 0.000 claims abstract description 7
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims abstract description 6
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 16
- 230000007547 defect Effects 0.000 claims description 6
- 230000002776 aggregation Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005054 agglomeration Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 229910010413 TiO 2 Inorganic materials 0.000 description 6
- 238000000498 ball milling Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- HDVUPIFFKAHPJY-UHFFFAOYSA-N 2-butylaniline Chemical compound CCCCC1=CC=CC=C1N HDVUPIFFKAHPJY-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 238000005411 Van der Waals force Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000001237 Raman spectrum Methods 0.000 description 2
- 238000007385 chemical modification Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- FMGBDYLOANULLW-UHFFFAOYSA-N 3-isocyanatopropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCN=C=O FMGBDYLOANULLW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- VSHTWPWTCXQLQN-UHFFFAOYSA-N n-butylaniline Chemical compound CCCCNC1=CC=CC=C1 VSHTWPWTCXQLQN-UHFFFAOYSA-N 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
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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
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
- C01B32/19—Preparation by exfoliation
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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
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
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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
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a method for preparing high-dispersity graphene based on a physical modification means, which comprises the following steps of preparing graphene oxide by adopting a Hummers method; step two, adding hydrazine hydrate, stirring and reacting under the water bath condition of 85 ℃, filtering and washing the product to obtain graphene aqueous dispersion; step three, injecting a dispersing agent to prepare a high-dispersity graphene product; and fourthly, standing, detecting the coagulation phenomenon in the high-dispersity graphene product, wherein in the method for preparing the high-dispersity graphene based on the physical modification means, high-dispersion high-stability graphene aqueous dispersion with the dispersion rate of 95.58% and the Zeta potential of-41.4 mV is obtained under the conditions of the graphene concentration of 1.0g/L, the mass ratio of polyacrylic acid to graphene of 4:1, the power of an ultrasonic instrument of 300W, the stirring speed of 250r/min and the treatment time of 8h, and the coagulation phenomenon is not visible to the naked eye after standing for 30d, so that the stability of the graphene aqueous dispersion is improved by adopting the physical dispersion means.
Description
Technical Field
The invention relates to the technical field of inorganic nonmetallic functional materials, in particular to a method for preparing high-dispersity graphene based on a physical modification means.
Background
Graphene, as a perfect two-dimensional atomic crystal composed of purely carbon frameworks, has a wide application prospect in fields such as nanoelectronics, sensors, nanocomposites, batteries, supercapacitors, hydrogen storage materials, anticorrosive coatings and the like. Currently, means for improving the dispersibility of graphene mainly include a physical dispersion method and a chemical modification method. The physical dispersion method is to break the van der Waals force between the sheet layers by grinding, ball milling, ultrasonic, microwave radiation and other means to realize good dispersion of the graphene; the chemical modification method is to graft special functional groups on the surface of graphene through chemical reaction, so as to improve the hydrophilicity of the graphene and ensure that the graphene is stably dispersed in a solvent.
However, due to the characteristics of superhydrophobicity, large specific surface area and the like of the nano graphene, and the fact that interaction is easy to occur between sheets, agglomeration is easy to occur, most of excellent properties of the graphene are limited to single-layer or few-layer graphene, so that the problem of dispersibility of the graphene seriously affects and restricts the industrialization process of the graphene, and how to prepare graphene aqueous dispersion with high concentration and high stability becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a method for preparing high-dispersity graphene based on a physical modification means, so as to solve the problems in the background art.
In order to achieve the above object, the present invention is realized by the following technical scheme: a method for preparing high-dispersity graphene based on a physical modification means comprises the following steps of preparing graphene oxide by adopting a Hummers method; step two, adding hydrazine hydrate, stirring and reacting under the water bath condition of 85 ℃, filtering and washing the product to obtain graphene aqueous dispersion; step three, injecting a dispersing agent to prepare a high-dispersity graphene product; and fourthly, standing, and detecting the coagulation phenomenon in the high-dispersity graphene product.
Further, high-purity graphite powder with a median particle diameter D50 of 2.69 mu m and a carbon content of more than 99.99% is used as a raw material, and graphene oxide is prepared by a Hummers method.
Further, 15mL of hydrazine hydrate with the concentration of 80% is added into 1500mL of graphene oxide dispersion liquid with the concentration of 2g/L, the stirring speed of 300r/min is kept for reaction for 4 hours under the water bath condition of 85 ℃, and the obtained product is filtered and washed to prepare graphene aqueous dispersion liquid which is in a flocculent agglomeration state.
Further, the graphene dispersion liquid with the concentration of 1.0g/L is used as a raw material, and under the conditions that the mass ratio of polyacrylic acid (dispersing agent) to graphene is 4:1, the power of an ultrasonic instrument is 300W, the stirring speed is 250r/min and the treatment time is 8 hours, a high-dispersity graphene product with the dispersion rate of 95.58% and the Zeta potential of-41.4 mV is prepared, and the phenomenon of macroscopic coagulation does not appear after standing for 30 days.
Furthermore, the high-dispersity graphene is prepared by crushing a large sheet of thin-layer structure into small sizes under the action of ultrasonic-stirring, so that the mutual winding and stacking of the large sheet of structures are reduced, and the interlayer Van der Waals force is reduced.
Further, the high-dispersity graphene Raman spectrum analysis shows that the ID/IG value is reduced from 1.31 to 1.03, and the graphene is broken into small sizes under the ultrasonic-stirring dispersion effect, so that fresh edges and surfaces with fewer defects are generated, and the defect density is reduced. The I2D/IG value is increased from 0.29 to 0.52, which shows that physical effect effectively peels off graphene, and meanwhile, the thin graphene after peeling is prevented from re-agglomerating by the dispersant intercalation interlayer, so that the high-dispersity graphene slurry is formed.
The invention has the beneficial effects that:
1. according to the method for preparing the high-dispersity graphene based on the physical modification means, the high-dispersity graphene is prepared by crushing a large sheet of thin-layer structure into small sizes under the action of ultrasonic stirring, so that the mutual winding and stacking of the large sheet of structures can be reduced, the interlayer van der Waals force is reduced, and the stability of the graphene water-based dispersion liquid is further improved.
2. According to the method for preparing the high-dispersity graphene based on the physical modification means, the graphene is crushed into small sizes under the ultrasonic-stirring dispersion effect, fresh edges and surfaces with fewer defects are generated, the defect density is reduced, the physical effect effectively strips the graphene, meanwhile, the thin graphene after the stripping is prevented from being agglomerated again by the dispersing agent inserted between the sheet layers, the high-dispersity graphene slurry is formed, the hydrophilicity of the high-dispersity graphene slurry is improved, and the high-dispersity graphene slurry is stably dispersed in a solvent.
Drawings
FIG. 1 is a graph of a graphene dispersion of the present invention;
FIG. 2 is a SEM morphology of graphene according to the present invention;
FIG. 3 is an SEM morphology of the highly dispersible graphene of the present invention;
FIG. 4 is a Raman spectrum diagram of graphene and high-dispersity graphene in the invention;
fig. 5 is a diagram showing standing of a graphene dispersion liquid with different dosages of polyacrylic acid for 30d in a method for preparing high-dispersity graphene based on a physical modification means, wherein the mass ratio of polyacrylic acid to graphene is as follows: (a) 0:1; (b) 1:1; (c) 2:1; (d) 3:1; (e) 4:1;
FIG. 6 is a graph showing that graphene dispersion solutions with different dosages of poly (2-butylaniline) are stood for 30d, wherein the mass ratio of the poly (2-butylaniline) to the graphene is as follows: (a) 0:1; (b) 0.2:1; (c) 0.5:1; (d) 0.8:1; (e) 1:1; (f) 2:1;
fig. 7 is a graph showing that graphene dispersion solutions with different dosages of polyacrylic acid are stood for 30d, wherein the mass ratio of polyacrylic acid to graphene is as follows: (a) 0:1; (b) 1:1; (c) 2:1; (d) 3:1; (e) 4:1;
FIG. 8 is a graph showing the standing time of a dispersion of chemically grafted modified graphene according to the present invention. Wherein (a) 0d; (b) 1d; (c) 3d; (d) 7d.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 8, the present invention provides a technical solution: a method for preparing high-dispersity graphene based on a physical modification means comprises the following steps of preparing graphene oxide by adopting a Hummers method; step two, adding hydrazine hydrate, stirring and reacting under the water bath condition of 85 ℃, filtering and washing the product to obtain graphene aqueous dispersion; step three, injecting a dispersing agent to prepare a high-dispersity graphene product; and fourthly, standing, and detecting the coagulation phenomenon in the high-dispersity graphene product.
Graphene and high-dispersibility graphene characteristic peaks
Example 1:
the wet ball milling dispersion method is to insert the dispersing agent between graphene sheets by using the action modes such as shearing or impact, so as to prevent the aggregation of graphene and improve the dispersion effect of graphene in a solvent. 500mL of graphene dispersion liquid with the concentration of 1.0g/L is weighed and fed into a sand mill, the power of the sand mill is 180HZ, the grinding time is 8 hours, and the mass ratio of the dispersant polyacrylic acid to the graphene is respectively set to be 0:1 (no dispersant is added), and wet ball milling dispersion tests are carried out on the graphene dispersion liquid in the proportions of 1:1, 2:1, 3:1 and 4:1. The pictures of the modified graphene dispersion liquid after standing for 30 days are shown in fig. 5, and the dispersion rate and Zeta potential results of the modified graphene dispersion liquid are shown in the following table.
Wet ball milling dispersing result 1
| Polyacrylic acid/graphene | Dispersion ratio (%) | Zeta |
| 0 | 188.67 | -16.2 |
| 1:1 | 24.84 | -15.5 |
| 2:1 | 31.78 | -19.3 |
| 3:1 | 47.37 | -33.5 |
| 4:1 | 36.43 | -35.1 |
Example 2:
500mL of graphene dispersion liquid with the concentration of 1.0g/L is weighed and fed into a sand mill, the power of the sand mill is 180HZ, the grinding time is 8 hours, and the mass ratio of the dispersing agent poly-2-butylaniline to the graphene is 0:1 (no dispersing agent is added), 0.2:1, 0.5:1, 0.8:1, 1:1 and 2:1 are respectively set for carrying out wet ball milling dispersion tests. The picture of the modified graphene dispersion after standing for 30 days is shown in fig. 6, and the dispersion rate and Zeta potential results of the modified graphene dispersion are shown in the following table.
Wet ball milling dispersion result 2
| Butylaniline/graphene | Dispersion ratio (%) | Zeta |
| 0 | 188.67 | -16.2 |
| 0.2:1 | 25.48 | 2.9 |
| 0.5:1 | 13.12 | -5.7 |
| 0.8:1 | 33.28 | -0.9 |
| 1:1 | 94.58 | 5.0 |
| 2:1 | 93.33 | 7.4 |
Example 3:
the ultrasonic dispersion method is to reduce the surface energy of graphene by high-energy high-vibration by utilizing cavitation of ultrasonic waves, and to insert a dispersing agent between graphene sheets under the stirring action to prevent agglomeration and realize uniform dispersion of graphene. 500mL of RGO dispersion with the concentration of 1.0g/L is weighed and placed in a clean beaker, ultrasonic-stirring is carried out for 8 hours by adopting a JP-060S type ultrasonic instrument and an NP-40LS type cantilever stirrer, and the mass ratio of the dispersing agent polyacrylic acid to the graphene is respectively set to be 0:1 (no dispersing agent is added), and ultrasonic-stirring dispersion tests are carried out by 1:1, 2:1, 3:1 and 4:1. The pictures of the modified graphene dispersion liquid after standing for 30 days are shown in fig. 7, and the dispersion rate and Zeta potential results of the modified graphene dispersion liquid are shown in the following table.
Ultrasonic-stirring dispersion results
Example 4:
hydrophilic functional groups are grafted on the surface of graphene through chemical reaction, so that the compatibility of the surface of graphene with water is improved, and the dispersibility of graphene in a water solvent is improved.
(1) Modification of graphene oxide: adding 100ml of N, N-dimethylformamide into 0.2g of graphene oxide, stirring for 10min to fully infiltrate the graphene oxide, then dripping 2.0g of isocyanatopropyl trimethoxysilane while stirring for 10min, performing ultrasonic treatment for 20min, then stirring for 2h at the temperature of 105 ℃ in an oil bath, centrifuging to remove supernatant, washing with ethanol for 3 times, and drying at the temperature of 60 ℃ for 24h to obtain the modified graphene oxide.
(2) Graphene oxide grafted TiO 2 : adding 0.2g of modified graphene oxide into 50ml of ethanol, and taking a certain amount of nano TiO 2 Adding 50ml deionized water, respectively ultrasonic treating for 20min, mixing, stirring at 60deg.C for 2 hr, centrifuging to remove supernatant, washing with deionized water and ethanol respectively for 3 times, and drying at 60deg.C for 24 hr to obtain grafted TiO 2 Is a graphene oxide.
(3) Grafted TiO 2 Is a reduction of graphene oxide: firstly, a certain amount of grafted TiO 2 Placing graphene oxide in water, and performing ultrasonic treatment for 1h, wherein the graphene oxide is addedHydrazine hydrate with the concentration of 80 percent is stirred for 4 hours at the speed of 300r/min under the condition of 85 ℃, filtered, washed with water and dried, and grafted with TiO 2 Is a graphene product of (a).
In this example, a picture of the modified graphene dispersion after standing for 30 days is shown in fig. 8, and the dispersion rate and Zeta potential result of the modified graphene dispersion are shown in the following table.
Chemical grafting modification results
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The method for preparing the high-dispersity graphene based on the physical modification means is characterized by comprising the following steps of preparing graphene oxide by adopting a Hummers method; step two, adding hydrazine hydrate, stirring and reacting under the water bath condition of 85 ℃, filtering and washing the product to obtain graphene aqueous dispersion; step three, injecting a dispersing agent to prepare a high-dispersity graphene product; and fourthly, standing, and detecting the coagulation phenomenon in the high-dispersity graphene product.
2. The method for preparing high-dispersity graphene based on physical modification means according to claim 1, wherein the method comprises the following steps: in the first step, the graphite powder adopts high-purity graphite powder with a median particle diameter D50 of 2.69 mu m and a carbon content of more than 99.99 percent as a raw material.
3. The method for preparing high-dispersity graphene based on physical modification means according to claim 2, wherein the method is characterized in that: 15mL of hydrazine hydrate with the concentration of 80% is used, and the mixture is injected into 1500mL of graphene oxide dispersion liquid with the concentration of 2g/L, and the reaction is carried out for 4 hours under the condition of 85 ℃ water bath and with the stirring speed of 300 r/min.
4. A method for preparing high-dispersibility graphene based on physical modification means according to claim 3, wherein: the graphene aqueous dispersion liquid is in a flocculent agglomeration state.
5. The method for preparing high-dispersity graphene based on physical modification means according to claim 1, wherein the method comprises the following steps: in the third step, polyacrylic acid is used as a dispersing agent, and the mass ratio of the dispersing agent to the graphene is 4:1.
6. The method for preparing high-dispersity graphene based on physical modification means according to claim 5, wherein the method comprises the following steps: the preparation process of the high-dispersivity graphene product is completed by taking 1.0g/L graphene dispersion liquid as a raw material and carrying out the treatment on polyacrylic acid and graphene under the conditions of 300W of ultrasonic power, 250r/min of stirring speed and 8h of treatment time.
7. The method for preparing high-dispersity graphene based on physical modification means according to claim 6, wherein the method comprises the following steps: the high-dispersity graphene product is not subjected to macroscopic coagulation phenomenon after standing for 30 d.
8. The method for preparing high-dispersity graphene based on physical modification means according to claim 6, wherein the method comprises the following steps: graphene in the graphene dispersion liquid is crushed into small size through ultrasonic-stirring dispersion effect, and defect density is reduced in the process.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941694A (en) * | 2010-09-07 | 2011-01-12 | 湘潭大学 | Preparation method of high-dispersivity graphene |
| CN102492296A (en) * | 2011-11-25 | 2012-06-13 | 江南大学 | Synthesis method of water dispersible polyaniline/graphene composite material |
| CN105540571A (en) * | 2015-12-23 | 2016-05-04 | 东南大学 | A preparing method of an aqueous stable graphene dispersion liquid |
| KR20170118355A (en) * | 2016-04-15 | 2017-10-25 | 주식회사 나노솔루션 | Preparation method of reduced graphene oxide solution |
| CN108455586A (en) * | 2018-02-27 | 2018-08-28 | 深圳名飞远科技有限公司 | A method of improving graphene dispersion performance |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941694A (en) * | 2010-09-07 | 2011-01-12 | 湘潭大学 | Preparation method of high-dispersivity graphene |
| CN102492296A (en) * | 2011-11-25 | 2012-06-13 | 江南大学 | Synthesis method of water dispersible polyaniline/graphene composite material |
| CN105540571A (en) * | 2015-12-23 | 2016-05-04 | 东南大学 | A preparing method of an aqueous stable graphene dispersion liquid |
| KR20170118355A (en) * | 2016-04-15 | 2017-10-25 | 주식회사 나노솔루션 | Preparation method of reduced graphene oxide solution |
| CN108455586A (en) * | 2018-02-27 | 2018-08-28 | 深圳名飞远科技有限公司 | A method of improving graphene dispersion performance |
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