CN103935982B - The preparation method of graphene nanobelt - Google Patents
The preparation method of graphene nanobelt Download PDFInfo
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- CN103935982B CN103935982B CN201310019484.XA CN201310019484A CN103935982B CN 103935982 B CN103935982 B CN 103935982B CN 201310019484 A CN201310019484 A CN 201310019484A CN 103935982 B CN103935982 B CN 103935982B
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Abstract
A preparation method for graphene nanobelt, comprises the steps: that metal substrate is placed in acid solution to be etched; Under anaerobic, the metal substrate after etching is heated to 600 DEG C ~ 900 DEG C, uses UV-irradiation metal substrate surface, and pass into carbonaceous gas and protection gas, after reaction, obtain carbon nanometer wall on the surface of metal substrate; Be 1:0.8 ~ 1.2 according to mass ratio, carbon nanometer wall mixed with muriate intercalator, is heated to 460 DEG C ~ 550 DEG C insulation reaction 2 hours ~ 6 hours, obtain muriatic intercalation carbon nanometer wall; Be 1 gram: 10 milliliters ~ 100 milliliters according to mass volume ratio, mixed with ionic liquid by muriatic intercalation carbon nanometer wall, be placed in the constant parallel magnetic field centrifugal treating that magneticstrength is 0.01T ~ 1T, obtain reaction solution, filtering reacting liquid obtains graphene nanobelt.Graphene nanobelt prepared by the preparation method of above-mentioned graphene nanobelt has higher specific conductivity.
Description
Technical field
The present invention relates to the synthesis field of nano-carbon material, particularly a kind of preparation method of graphene nanobelt.
Background technology
The kind of carbon material has the soccerballene (C of zero dimension
60deng), the carbon nanotube, carbon nanofiber etc. of one dimension, the Graphene of two dimension, three-dimensional graphite, diamond etc., carbon nanometer wall (carbonnanowall, CNW) is the carbon nano structure with two-dimensional diffusion, its most typical pattern is just perpendicular to substrate material surface growth, thickness is greater than the wall-like structure of Graphene, completely different from the feature of soccerballene, carbon nanotube, Graphene etc., can be used as the raw material of other carbon material of preparation.
Before finding early than Graphene, people just begin one's study the preparation of carbon nanometer wall.Just there were preparation and the related application thereof of reported in literature carbon nanometer wall in 2002, but no matter are early stage preparation method or nearest preparation method, all can relate to and react under plasma atmosphere, certain destruction can be caused to the structure of CNW.
Graphene nanobelt not only has the performance of Graphene, also possesses the performance that some are special, such as its length-to-diameter ratio is larger, can up to thousands of times, and the specific conductivity of graphene nanobelt is higher, can copper conductor be replaced at integrated circuit connection, improve integrated level further, also can carry out modification to its structure and be prepared into switch device.But at present because graphene nanobelt still exists a lot of defect, cause its specific conductivity lower.
Summary of the invention
Given this, be necessary to provide a kind of preparation method with the graphene nanobelt of high conductance.
A preparation method for graphene nanobelt, comprises the steps:
Metal substrate is placed in concentration be 0.01mol/L ~ 1mol/L acid solution etching 0.5 minute ~ 10 minutes; Under anaerobic, the described metal substrate after etching is heated to 600 DEG C ~ 900 DEG C, uses metal substrate surface described in UV-irradiation, and pass into carbonaceous gas and protection gas, keep 30 minutes ~ 300 minutes, after reaction, obtain carbon nanometer wall on the surface of described metal substrate; Wherein, the flow passing into described carbonaceous gas is 10sccm ~ 1000sccm, and the throughput ratio of described carbonaceous gas and described protection gas is 2 ~ 10:1;
Be 1:0.8 ~ 1.2 according to mass ratio, described carbon nanometer wall mixed with muriate intercalator, is heated to 460 DEG C ~ 550 DEG C insulation reaction 2 hours ~ 6 hours, obtain muriatic intercalation carbon nanometer wall; And
It is 1 gram: 10 milliliters ~ 100 milliliters according to mass volume ratio, described muriatic intercalation carbon nanometer wall is mixed with ionic liquid, and be placed in the constant parallel magnetic field centrifugal treating that magneticstrength is 0.01 tesla ~ 1 tesla, obtain reaction solution, filter described reaction solution and obtain graphene nanobelt.
Wherein in an embodiment, before the described metal substrate heating after etching, also comprise the step that the described metal substrate after to etching adopts deionized water, ethanol and acetone to clean successively.
Wherein in an embodiment, described acid solution is hydrochloric acid soln, sulphuric acid soln or salpeter solution; The concentration of described acid solution is 0.1mol/L ~ 0.5mol/L; The etching period of described metal substrate in described acid solution is 60 seconds ~ 180 seconds.
Wherein in an embodiment, described metal substrate is the one in iron foil, nickel foil and cobalt paper tinsel.
Wherein in an embodiment, described carbonaceous gas is the one in methane, ethane, propane, acetylene and alcohol vapour; Described protection gas is at least one in helium, nitrogen and argon gas.
Wherein in an embodiment, before described muriatic intercalation carbon nanometer wall is mixed with described ionic liquid, also comprise the step to described muriatic intercalation carbon nanometer wall cleaning and drying: adopt muriatic intercalation carbon nanometer wall described in washed with de-ionized water, after 80 DEG C ~ 100 DEG C vacuum-drying to constant weight.
Wherein in an embodiment, described muriate intercalator is at least one in iron(ic) chloride, nickelous chloride, cupric chloride, cobalt chloride, Repone K, magnesium chloride, lead chloride, zinc chloride, calcium chloride and bariumchloride, described ionic liquid is 1-ethyl-3-methylimidazole Tetrafluoroboric acid, 1-ethyl-3-methylimidazole fluoroform sulfimide, 1-ethyl-3-methylimidazole trifluoromethanesulfonic acid, 1-ethyl-3-methylimidazole trifluoroacetic acid, 1-ethyl-3-methylimidazole fluoroform sulphonyl carbon, 1-ethyl-3-methylimidazole five acetyl fluoride imines, 1-ethyl-3-methylimidazole two cyaniding nitrogen, 1-ethyl-3, 5-methylimidazole fluoroform sulfimide and 1, 3-diethyl-4-methylimidazole fluoroform sulfimide, 1, at least one in 3-diethyl-5-Methylimidazole fluoroform sulfimide 1-ethyl-3-methylimidazole two cyaniding nitrogen.
Wherein in an embodiment, the condition of described centrifugal treating is: rotating speed 1000 revs/min ~ 10000 revs/min, 10 minutes ~ 100 minutes treatment time.
Wherein in an embodiment, also comprise the step to described graphene nanobelt cleaning and drying: described graphene nanobelt is refiltered 3 times ~ 6 times through adding machine solvent, add again deionized water filter until filtrate with Silver Nitrate detect without chlorion, then by filter residue in 60 DEG C ~ 100 DEG C vacuum-dryings to constant weight.
Wherein in an embodiment, described organic solvent is 1-Methyl-2-Pyrrolidone or DMF.
The preparation method of above-mentioned graphene nanobelt, by preparing carbon nanometer wall first voluntarily as starting material, namely the carbon nanometer wall by adopting etching metal substrate and photochemical catalysis chemical gaseous phase deposition two steps to prepare, prepare carbon nanometer wall under effectively can avoiding traditional using plasma atmosphere and cause it destructurized, and the carbon nanometer wall prepared has uniform thickness, structure is more complete; Then after being prepared into muriatic intercalation carbon nanometer wall, ionic liquid is adopted to make solvent, and by conjunction with under constant parallel magnetic field and centrifugal treating acting in conjunction, not only can realize peeling off intercalation carbon nanometer wall fast, again reunite after can also effectively preventing graphene nanobelt from peeling off, also assures that the graphene nanobelt prepared has good integrity, make the graphene nanobelt using the preparation method of above-mentioned graphene nanobelt to prepare have higher specific conductivity.
Accompanying drawing explanation
Fig. 1 is preparation method's schema of the graphene nanobelt of an embodiment;
Fig. 2 is the scanning electron microscope (SEM) photograph (SEM) of carbon nanometer wall prepared by embodiment 1;
Fig. 3 is the scanning electron microscope (SEM) photograph (SEM) of graphene nanobelt prepared by embodiment 1.
Embodiment
Mainly in conjunction with the drawings and the specific embodiments the preparation method of graphene nanobelt is described in further detail below.
As shown in Figure 1, the preparation method of the graphene nanobelt of an embodiment, comprises the steps:
Step S110: metal substrate is placed in concentration be 0.01mol/L ~ 1mol/L acid solution etching 0.5 minute ~ 10 minutes; Under anaerobic, the metal substrate after etching is heated to 600 DEG C ~ 900 DEG C, uses UV-irradiation metal substrate surface, and pass into carbonaceous gas and protection gas, keep 30 minutes ~ 300 minutes, after reaction, obtain carbon nanometer wall on the surface of metal substrate; Wherein, the flow passing into carbonaceous gas is 10sccm(standard state milliliter per minute) ~ 1000sccm, and the throughput ratio of carbonaceous gas and protection gas is 2 ~ 10:1.After having reacted, stop passing into carbonaceous gas, stop heating and UV-irradiation, to be cooled to room temperature, carbon nanometer wall is obtained on the surface of metal substrate.Finally, the carbon nanometer wall of metal substrate surface is scraped, just obtain carbon nanometer wall powder.
By to metal substrate etching, make the etched surfaces of metal substrate produce defect, effectively can improve the surface tissue of metal substrate, carbon nanometer wall energy is enough grown at this metal substrate surface.Wherein, acid solution is the dilute acid soln that this area is commonly used, and is preferably hydrochloric acid soln, sulphuric acid soln or salpeter solution.The concentration of acid solution is preferably 0.1mol/L ~ 0.5mol/L; And the etching period of metal substrate in acid solution is preferably 60 seconds ~ 180 seconds.Preferred etching condition, can reach good etching effect, can improve the growth efficiency of carbon nanometer wall.
Wherein, the metal substrate that metal substrate can be commonly used for this area, is preferably the one in iron foil, nickel foil and cobalt paper tinsel.
Prepare carbon nanometer wall in the absence of oxygen, be in order to avoid oxygen participates in reaction, and have influence on the growth of carbon nanometer wall, thus provide a stable environment to the growth of carbon nanometer wall.
By adopting UV-light to irradiate metal substrate surface, thus playing light-catalysed effect, the temperature of reaction can be reduced, reduce energy consumption, reduce production cost.Wherein, the instrument of UV-irradiation is provided can be ultraviolet source equipment.Wherein, the wavelength of UV-light is 200 nanometer ~ 400 nanometers.
The carbon source that the growth needs of carbon nanometer wall is more; carbonaceous gas is 2 ~ 10:1 with the throughput ratio of protection gas, not only has more carbon source, and adopts the protection gas of this ratio as carrier gas; carbonaceous gas can be diluted to a certain extent, be conducive to the growth of carbon nanometer wall.
By the carbon nanometer wall adopting etching metal substrate and photochemical catalysis chemical gaseous phase deposition two steps to prepare, prepare carbon nanometer wall under effectively can avoiding traditional using plasma atmosphere and cause it destructurized, and the carbon nanometer wall prepared has uniform thickness, structure is more complete.And the carbon nanometer wall energy of preparation enough vertically grows in the metal substrate of etching, preparation technology is simple, and preparation condition is easy to control, and shortens etching period, thus improves production efficiency.
Wherein, before the metal substrate heating after etching, the step that the metal substrate after to etching adopts deionized water, ethanol and acetone to clean successively is also comprised.
Wherein, the carbonaceous gas that carbonaceous gas can be commonly used for this area, is preferably the one in methane, ethane, propane, acetylene and alcohol vapour.This several carbonaceous gas structure is simple, is easy to cracking and deposition.
Wherein, the rare gas element that protection gas can be commonly used for this area, is preferably at least one in helium, nitrogen and argon gas.
Step S120: be 1:0.8 ~ 1.2 according to mass ratio, mixes carbon nanometer wall with muriate intercalator, is heated to 460 DEG C ~ 550 DEG C insulation reaction 2 hours ~ 6 hours, obtain muriatic intercalation carbon nanometer wall.
By first carbon nanometer wall and muriate intercalator being mixed with muriatic intercalation carbon nanometer wall, carbon-coating spacing can be made to increase, thus the reactive force of graphite layers is reduced, be conducive to follow-up stripping.And be destruction in order to avoid carbon nano wall structure by being first prepared into muriatic intercalation carbon nanometer wall, be conducive to the integrity obtaining the structure of graphene nanobelt after peeling off.
Wherein, muriate intercalator is at least one in iron(ic) chloride, nickelous chloride, cupric chloride, cobalt chloride, Repone K, magnesium chloride, lead chloride, zinc chloride, calcium chloride and bariumchloride.These muriates are adopted to make preparation technology simple as intercalator, and low to the requirement of equipment, decrease preparation cost.
Step S130: be 1 gram: 10 milliliters ~ 100 milliliters according to mass volume ratio, muriatic intercalation carbon nanometer wall is mixed with ionic liquid, and be placed in the constant parallel magnetic field centrifugal treating that magneticstrength is 0.01 tesla (T) ~ 1 tesla (T), obtain reaction solution, filtering reacting liquid obtains graphene nanobelt.
Wherein, constant parallel magnetic field refers to that the N pole in magnetic field is extremely parallel with S, and the magnetic field that magneticstrength is invariable, that is to say parallel magnetic field.By constant parallel magnetic field, charged particle is moved in magnetic field and peels off muriatic intercalation carbon nanometer wall to obtain graphene nanobelt.Can realize peeling off intercalation carbon nanometer wall fast under constant parallel magnetic field and centrifugal treating acting in conjunction, and under centrifugal treating, also can complete the collection of the graphene nanobelt prepared.
Wherein, the condition of centrifugal treating is: rotating speed 1000 revs/min ~ 10000 revs/min, 10 minutes ~ 100 minutes treatment time.
By using ionic liquid to mix with muriatic intercalation carbon nanometer wall as solvent, the reunion again of the graphene nanobelt prepared effectively can be prevented.Wherein, ionic liquid is 1-ethyl-3-methylimidazole Tetrafluoroboric acid (EtMeImBF
4), 1-ethyl-3-methylimidazole fluoroform sulfimide (EtMeImN (CF
3sO
2)
2), 1-ethyl-3-methylimidazole trifluoromethanesulfonic acid (EtMeImCF
3sO
3), 1-ethyl-3-methylimidazole trifluoroacetic acid (EtMeImN (CN)
2), 1-ethyl-3-methylimidazole fluoroform sulphonyl carbon (EtMeImC (CF
3sO
2)
3), 1-ethyl-3-methylimidazole five acetyl fluoride imines (EtMeImN (C
2f
5sO
2)
2), 1-ethyl-3-methylimidazole two cyaniding nitrogen (EtMeImN (CN)
2), 1-ethyl-3,5-methylimidazole fluoroform sulfimide (1-Et-3,5-Me
2imN (CF
3sO
2)
2), 1,3-diethyl-4-methylimidazole fluoroform sulfimide (1,3-Et
2-4-MeImN (CF
3sO
2)
2) and 1,3-diethyl-5-Methylimidazole fluoroform sulfimide (1,3-Et
2-5-MeImN (CF
3sO
2)
2) at least one.
Wherein, before being mixed with ionic liquid by muriatic intercalation carbon nanometer wall, also comprise the step to muriatic intercalation carbon nanometer wall cleaning and drying: adopt washed with de-ionized water muriatic intercalation carbon nanometer wall, after 80 DEG C ~ 100 DEG C vacuum-drying to constant weight.
Wherein, after step S130, also comprise the step to graphene nanobelt cleaning and drying: graphene nanobelt is refiltered 3 times ~ 6 times through adding machine solvent, add again deionized water filter until filtrate with Silver Nitrate detect without chlorion, then by filter residue in 60 DEG C ~ 100 DEG C vacuum-dryings to constant weight.Wherein, the organic solvent that organic solvent can be commonly used for this area, be preferably 1-Methyl-2-Pyrrolidone (NMP) or N, dinethylformamide (DMF), 1-Methyl-2-Pyrrolidone (NMP) or DMF (DMF) effectively can remove ionic liquid.
The preparation method of above-mentioned graphene nanobelt, by preparing carbon nanometer wall first voluntarily as starting material, namely the carbon nanometer wall by adopting etching metal substrate and photochemical catalysis chemical gaseous phase deposition two steps to prepare, prepare carbon nanometer wall under effectively can avoiding traditional using plasma atmosphere and cause it destructurized, and the carbon nanometer wall prepared has uniform thickness, structure is more complete; Then after being prepared into muriatic intercalation carbon nanometer wall, ionic liquid is adopted to make solvent, and by conjunction with under constant parallel magnetic field and centrifugal treating acting in conjunction, not only can realize peeling off intercalation carbon nanometer wall fast, again reunite after effectively preventing graphene nanobelt from peeling off, also assures that the graphene nanobelt prepared has good integrity, make the graphene nanobelt using the preparation method of above-mentioned graphene nanobelt to prepare have higher specific conductivity.
The preparation method of above-mentioned graphene nanobelt is simple, and required equipment is all common chemical industry equipment, saves research and development equipment cost, is applicable to scale operation.
Be below specific embodiment part:
Embodiment 1
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) nickel foil is put into concentration be 1mol/L hydrochloric acid soln etching 0.5 minute, clean with deionized water, ethanol, acetone successively after etching, b nickel foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, nickel foil is heated to 900 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on nickel foil surface, then methane and nitrogen is passed into, keep 100 minutes, wherein, the flow passing into steam methane is 200sccm, the throughput ratio of steam methane and nitrogen is 2:1, after having reacted, stop passing into steam methane, stop heating nickel foil, and close light source, after question response room is cooled to room temperature, stop passing into nitrogen, the carbon nanometer wall of the present embodiment is obtained on nickel foil surface, it is scraped from nickel foil surface, just carbon nanometer wall powder is obtained.
Fig. 2 is the scanning electron microscope (SEM) photograph (SEM) of carbon nanometer wall prepared by the present embodiment.As can be seen from the figure, carbon nanometer wall prepared by the present embodiment is perpendicular to nickel foil dense growth, and thickness is even, is about 30 nanometer ~ 60 nanometers.
(2) be 1:0.8 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with iron(ic) chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 460 DEG C, insulation reaction 2 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of iron(ic) chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water iron(ic) chloride, after vacuum drying oven is dried to constant weight in 80 DEG C, obtain the intercalation carbon nanometer wall of pure iron(ic) chloride.
(3) be 1g:10ml according to mass volume ratio, the intercalation carbon nanometer wall of dried iron(ic) chloride joined 1-ethyl-3-methylimidazole Tetrafluoroboric acid (EtMeImBF is housed
4) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 1T, start magnetic field, whizzer, allow whizzer with the centrifugation process 100 minutes of 1000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, graphene nanobelt is filtered 6 times through adding 1-Methyl-2-Pyrrolidone (NMP), then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 60 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Fig. 3 is the scanning electron microscope (SEM) photograph (SEM) of graphene nanobelt prepared by the present embodiment.As can be seen from the figure, the width distribution of graphene nanobelt prepared by the present embodiment is concentrated, and be about 20 nanometer ~ 40 nanometers, length is about 2 microns ~ 20 microns, and length-to-diameter ratio is 50 ~ 1000.
Embodiment 2
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) iron foil is put into concentration be 0.5mol/L sulphuric acid soln etching 4 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b iron foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, iron foil is heated to 600 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on iron foil surface, then ethane steam and argon gas is passed into, keep 200 minutes, wherein, the flow passing into ethane steam is 100sccm, ethane steam is 5:1 with the throughput ratio ratio of argon gas, after having reacted, stop passing into ethane steam, stop heating iron foil, and close light source, after question response room is cooled to room temperature, stop passing into argon gas, the carbon nanometer wall of the present embodiment is obtained on iron foil surface, it is scraped from iron foil surface, just carbon nanometer wall powder is obtained.
(2) be 1:0.9 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with cupric chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 500 DEG C, insulation reaction 3 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of cupric chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water cupric chloride, after vacuum drying oven is dried to constant weight in 90 DEG C, obtain the intercalation carbon nanometer wall of pure cupric chloride.
(3) be 1g:100ml according to mass volume ratio, the intercalation carbon nanometer wall of dried cupric chloride joined 1-ethyl-3-methylimidazole fluoroform sulfimide (EtMeImN (CF is housed
3sO
2)
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.5T, start magnetic field, whizzer, allow whizzer with the centrifugation process 50 minutes of 2000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, by graphene nanobelt through adding DMF (DMF) filter 23, then be filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 80 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 3
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) cobalt paper tinsel is put into concentration be 0.01mol/L salpeter solution etching 10 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b cobalt paper tinsel after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, cobalt paper tinsel is heated to 700 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on cobalt paper tinsel surface, then acetylene steam and argon gas is passed into, keep 300 minutes, wherein, the flow passing into acetylene steam is 10sccm, the throughput ratio of acetylene steam and helium is 8:1, after having reacted, stop passing into acetylene steam, stop heating cobalt paper tinsel, and close light source, after question response room is cooled to room temperature, stop passing into helium, the carbon nanometer wall of the present embodiment is obtained on cobalt paper tinsel surface, it is scraped from cobalt paper tinsel surface, just carbon nanometer wall powder is obtained.
(2) be 1: 1.2 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with nickelous chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 480 DEG C, insulation reaction 6 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of nickelous chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water nickelous chloride, after vacuum drying oven is dried to constant weight in 100 DEG C, obtain the intercalation carbon nanometer wall of pure nickelous chloride.
(3) be 1g:50ml according to mass volume ratio, the intercalation carbon nanometer wall of dried nickelous chloride joined 1-ethyl-3-methylimidazole trifluoromethanesulfonic acid (EtMeImCF is housed
3sO
3) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.1T, start magnetic field, whizzer, allow whizzer with the centrifugation process 30 minutes of 5000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, graphene nanobelt is filtered 5 times through adding 1-Methyl-2-Pyrrolidone (NMP), then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 100 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 4
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) nickel foil is put into concentration be 0.2mol/L hydrochloric acid soln etching 2 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b nickel foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, nickel foil is heated to 750 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on nickel foil surface, then propane vapor and nitrogen and argon gas mixed gas is passed into, keep 30 minutes, wherein, the flow passing into propane vapor is 1000sccm, the throughput ratio of propane vapor and nitrogen and argon gas mixed gas is 10:1, after having reacted, stop passing into propane vapor, stop heating nickel foil, and close light source, after question response room is cooled to room temperature, stop passing into nitrogen and argon gas mixed gas, the carbon nanometer wall of the present embodiment is obtained on nickel foil surface, it is scraped from nickel foil surface, just carbon nanometer wall powder is obtained.
(2) be 1:1.0 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with cobalt chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 550 DEG C, insulation reaction 4 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of cobalt chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water cobalt chloride, after vacuum drying oven is dried to constant weight in 90 DEG C, obtain the intercalation carbon nanometer wall of pure cobalt chloride.
(3) be 1g:20ml according to mass volume ratio, the intercalation carbon nanometer wall of dried cobalt chloride joined 1-ethyl-3-methylimidazole trifluoroacetic acid (EtMeImN (CN) is housed
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.05T, start magnetic field, whizzer, allow whizzer with the centrifugation process 10 minutes of 8000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, by graphene nanobelt through adding N, dinethylformamide (DMF) filter 23, then be filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 90 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 5
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) iron foil is put into concentration be 0.1mol/L sulphuric acid soln etching 5 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b iron foil after cleaned is put into reaction chamber by (), and after getting rid of the air in reaction chamber, iron foil is heated to 800 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on iron foil surface, then alcohol vapour and argon gas is passed into, keep 50 minutes, wherein, the flow passing into alcohol vapour is 500sccm, the throughput ratio of alcohol vapour and argon gas is 6:1, after having reacted, stop passing into argon gas, stop heating iron foil, and close light source, after question response room is cooled to room temperature, stop passing into argon gas, the carbon nanometer wall of the present embodiment is obtained on iron foil surface, it is scraped from iron foil surface, just carbon nanometer wall powder is obtained.
(2) be 1: 1.1 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with Repone K intercalator, insert in silica tube, sealed silica envelope, heat up after 520 DEG C, insulation reaction 5 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of Repone K, adopt the intercalation carbon nanometer wall of washed with de-ionized water Repone K, after vacuum drying oven is dried to constant weight in 85 DEG C, obtain the intercalation carbon nanometer wall of pure Repone K.
(3) be 1g:80ml according to mass volume ratio, the intercalation carbon nanometer wall of dried Repone K joined 1-ethyl-3-methylimidazole fluoroform sulphonyl carbon (EtMeImC (CF is housed
3sO
2)
3) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.01T, start magnetic field, whizzer, allow whizzer with the centrifugation process 20 minutes of 10000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, graphene nanobelt is filtered 4 times through adding 1-Methyl-2-Pyrrolidone (NMP), then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 70 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 6
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) cobalt paper tinsel is put into concentration be 0.4mol/L salpeter solution etching 8 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b cobalt paper tinsel after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, cobalt paper tinsel is heated to 850 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on cobalt paper tinsel surface, then steam methane and helium is passed into, keep 90 minutes, wherein, the flow passing into steam methane is 800sccm, the throughput ratio of steam methane and helium is 4:1, after having reacted, stop passing into steam methane, stop heating cobalt paper tinsel, and close light source, after question response room is cooled to room temperature, stop passing into helium, the carbon nanometer wall of the present embodiment is obtained on cobalt paper tinsel surface, it is scraped from cobalt paper tinsel surface, just carbon nanometer wall powder is obtained.
(2) be 1:0.8 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with sodium-chlor intercalator, insert in silica tube, sealed silica envelope, heat up after 530 DEG C, insulation reaction 2 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of sodium-chlor, adopt the intercalation carbon nanometer wall of washed with de-ionized water sodium-chlor, after vacuum drying oven is dried to constant weight in 95 DEG C, obtain the intercalation carbon nanometer wall of pure sodium-chlor.
(3) be 1g:60ml according to mass volume ratio, the intercalation carbon nanometer wall of dried sodium-chlor joined 1-ethyl-3-methylimidazole trifluoromethanesulfonic acid (EtMeImCF is housed
3sO
3) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.2T, start magnetic field, whizzer, allow whizzer with the centrifugation process 40 minutes of 2000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, by graphene nanobelt through adding N, dinethylformamide (DMF) filters 5 times, then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 60 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 7
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) nickel foil is put into concentration be 0.25mol/L hydrochloric acid soln etching 3 minutes, clean with deionized water, ethanol, acetone successively after etching, b nickel foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, nickel foil is heated to 900 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on nickel foil surface, then ethane steam and nitrogen is passed into, keep 120 minutes, wherein, the flow passing into ethane steam is 300sccm, the throughput ratio of ethane steam and nitrogen is 3:1, after having reacted, stop passing into ethane steam, stop heating nickel foil, and close light source, after question response room is cooled to room temperature, stop passing into nitrogen, the carbon nanometer wall of the present embodiment is obtained on nickel foil surface, it is scraped from nickel foil surface, just carbon nanometer wall powder is obtained.
(2) be 1:1 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with magnesium chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 490 DEG C, insulation reaction 3 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of magnesium chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water magnesium chloride, after vacuum drying oven is dried to constant weight in 90 DEG C, obtain the intercalation carbon nanometer wall of pure magnesium chloride.
(3) be 1g:40ml according to mass volume ratio, the intercalation carbon nanometer wall of dried magnesium chloride joined 1-ethyl-3-methylimidazole two cyaniding nitrogen (EtMeImN (CN) is housed
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.4T, start magnetic field, whizzer, allow whizzer with the centrifugation process 60 minutes of 2500 revs/min, obtain reaction solution, filtering reacting liquid, obtaining the graphene nanobelt of the present embodiment, by graphene nanobelt through adding 1-Methyl-2-Pyrrolidone (NMP) filter 23, then being filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 100 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 8
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) iron foil is put into concentration be 1mol/L hydrochloric acid soln etching 4 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b iron foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, iron foil is heated to 650 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on iron foil surface, then acetylene steam and argon gas is passed into, keep 180 minutes, wherein, the flow passing into acetylene steam is 200sccm, the throughput ratio of acetylene steam and argon gas is 2:1, after having reacted, stop passing into acetylene steam, stop heating iron foil, and close light source, after question response room is cooled to room temperature, stop passing into argon gas, the carbon nanometer wall of the present embodiment is obtained on iron foil surface, it is scraped from iron foil surface, just carbon nanometer wall powder is obtained.
(2) be 1: 1.0 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with lead chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 540 DEG C, insulation reaction 6 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of lead chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water lead chloride, after vacuum drying oven is dried to constant weight in 100 DEG C, obtain the intercalation carbon nanometer wall of pure lead chloride.
(3) be 1g:30ml according to mass volume ratio, the intercalation carbon nanometer wall of dried lead chloride joined 1-ethyl-3,5-methylimidazole fluoroform sulfimide (1-Et-3,5-Me are housed
2imN (CF
3sO
2)
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.8T, start magnetic field, whizzer, allow whizzer with the centrifugation process 80 minutes of 1000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, by graphene nanobelt through adding N, dinethylformamide (DMF) filters 6 times, then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 80 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 9
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) cobalt paper tinsel is put into concentration be 0.3mol/L sulphuric acid soln etching 2 minutes, etching after with cleaning with deionized water, ethanol, acetone successively, b cobalt paper tinsel after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, cobalt paper tinsel is heated to 700 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on cobalt paper tinsel surface, then propane vapor and helium is passed into, keep 240 minutes, wherein, the flow passing into propane vapor is 50sccm, the throughput ratio of propane vapor and helium is 5:1, after having reacted, stop passing into propane vapor, stop heating cobalt paper tinsel, and close light source, after question response room is cooled to room temperature, stop passing into helium, the carbon nanometer wall of the present embodiment is obtained on cobalt paper tinsel surface, it is scraped from cobalt paper tinsel surface, just carbon nanometer wall powder is obtained.
(2) be 1:0.9 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with zinc chloride intercalator, insert in silica tube, sealed silica envelope, heat up after 520 DEG C, insulation reaction 5 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of zinc chloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water zinc chloride, after vacuum drying oven is dried to constant weight in 80 DEG C, obtain the intercalation carbon nanometer wall of pure zinc chloride.
(3) be 1g:100ml according to mass volume ratio, the intercalation carbon nanometer wall of dried zinc chloride joined 1,3-diethyl-4-methylimidazole fluoroform sulfimide (1,3-Et is housed
2-4-MeImN (CF
3sO
2)
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 1T, start magnetic field, whizzer, allow whizzer with the centrifugation process 50 minutes of 3000 revs/min, obtain reaction solution, filtering reacting liquid, obtaining the graphene nanobelt of the present embodiment, by graphene nanobelt through adding 1-Methyl-2-Pyrrolidone (NMP) filter 23, then being filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 90 DEG C, to obtain pure graphene nanobelt.And obtain the specific conductivity of the graphene nanobelt of the present embodiment, in table 1.
Embodiment 10
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) nickel foil is put into concentration be 0.5mol/L salpeter solution etching 5 minutes, clean with deionized water, ethanol, acetone successively after etching, b nickel foil after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, nickel foil is heated to 800 DEG C, then ultraviolet source equipment is opened, make UV-irradiation on nickel foil surface, then alcohol vapour and nitrogen is passed into, keep 300 minutes, wherein, the flow passing into alcohol vapour is 20sccm, the throughput ratio of alcohol vapour and nitrogen is 8:1, after having reacted, stop passing into alcohol vapour, stop heating nickel foil, and close light source, after question response room is cooled to room temperature, stop passing into nitrogen, the carbon nanometer wall of the present embodiment is obtained on nickel foil surface, it is scraped from nickel foil surface, just carbon nanometer wall powder is obtained.
(2) be 1:1.1 according to mass ratio, take carbon nanometer wall prepared by step (1) to mix with bariumchloride intercalator, insert in silica tube, sealed silica envelope, heat up after 550 DEG C, insulation reaction 4 hours, be cooled to room temperature after reaction terminates, obtain the intercalation carbon nanometer wall of bariumchloride, adopt the intercalation carbon nanometer wall of washed with de-ionized water bariumchloride, after vacuum drying oven is dried to constant weight in 90 DEG C, obtain the intercalation carbon nanometer wall of pure bariumchloride.
(3) be 1g:10ml according to mass volume ratio, the intercalation carbon nanometer wall of dried bariumchloride joined 1,3-diethyl-5-Methylimidazole fluoroform sulfimide (1,3-Et is housed
2-5-MeImN (CF
3sO
2)
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.1T, start magnetic field, whizzer, allow whizzer with the centrifugation process 10 minutes of 5000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, by graphene nanobelt through adding N, dinethylformamide (DMF) filters 4 times, then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 70 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
Embodiment 11
Being prepared as follows of the graphene nanobelt of the present embodiment:
(1) prepare carbon nanometer wall: (a) cobalt paper tinsel is put into concentration be 0.05mol/L hydrochloric acid soln etching 1 minute, etching after with cleaning with deionized water, ethanol, acetone successively; B cobalt paper tinsel after cleaning is put into reaction chamber by (), and after getting rid of the air in reaction chamber, cobalt paper tinsel is heated to 900 DEG C, then open ultraviolet source equipment, make UV-irradiation on cobalt paper tinsel surface, then pass into steam methane and argon gas, wherein, the flow passing into steam methane is 100sccm, and the throughput ratio of steam methane and argon gas is 10:1, keeps 30 minutes; After having reacted, stop passing into steam methane, stop heating cobalt paper tinsel, and close light source, after question response room is cooled to room temperature, stop passing into argon gas, obtain the carbon nanometer wall of the present embodiment on cobalt paper tinsel surface, it is scraped from cobalt paper tinsel surface, just obtains carbon nanometer wall powder.
(2) be 1:0.2 according to mass ratio, take carbon nanometer wall and 50% ferric oxide prepared by step (1): 50% cupric oxide intercalator mixes, insert in silica tube, sealed silica envelope, heat up after 460 DEG C, insulation reaction 2 hours, room temperature is cooled to after reaction terminates, obtain 50% ferric oxide: the intercalation carbon nanometer wall of 50% cupric oxide, adopt washed with de-ionized water 50% ferric oxide: the intercalation carbon nanometer wall of 50% cupric oxide, after vacuum drying oven is dried to constant weight in 100 DEG C, obtain 50% pure ferric oxide: the intercalation carbon nanometer wall of 50% cupric oxide.
(3) be 1g:50ml according to mass volume ratio, by dried 50% ferric oxide: the intercalation carbon nanometer wall of 50% cupric oxide joins and 1-ethyl-3-methylimidazole two cyaniding nitrogen (EtMeImN (CN) is housed
2) container in, get 1L mixed solution to join in supercentrifuge that capacity is 2L and build, add that at whizzer top base two ends magneticstrength is the constant parallel magnetic field of 0.01T, start magnetic field, whizzer, allow whizzer with the centrifugation process 100 minutes of 8000 revs/min, obtain reaction solution, filtering reacting liquid, obtain the graphene nanobelt of the present embodiment, graphene nanobelt is filtered 5 times through adding 1-Methyl-2-Pyrrolidone (NMP), then is filtered to filtrate AgNO with deionized water
3detect without chlorion; Then the filter residue cleaned up to be put in vacuum drying oven dry constant weight at 100 DEG C, to obtain pure graphene nanobelt.And the specific conductivity of the graphene nanobelt of the present embodiment obtained, in table 1.
What table 1 represented is the specific conductivity of graphene nanobelt prepared by embodiment 1 ~ embodiment 11.
Table 1
Can learn from table 1, graphene nanobelt specific conductivity prepared by the preparation method of the graphene nanobelt of embodiment 1 ~ embodiment 11 is at least 0.7 × 10
5s/m, and the specific conductivity 10 of the graphene nanobelt prepared apparently higher than the method that tradition prepares graphene nanobelt
4s/m, this illustrates that the graphene nanobelt adopting the preparation method of graphene nanobelt of the present invention to prepare has good integrity.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a preparation method for graphene nanobelt, is characterized in that, comprises the steps:
Metal substrate is placed in concentration be 0.01mol/L ~ 1mol/L acid solution etching 0.5 minute ~ 10 minutes; Under anaerobic, the described metal substrate after etching is heated to 600 DEG C ~ 900 DEG C, uses metal substrate surface described in UV-irradiation, and pass into carbonaceous gas and protection gas, keep 30 minutes ~ 300 minutes, after reaction, obtain carbon nanometer wall on the surface of described metal substrate; Wherein, the flow passing into described carbonaceous gas is 10sccm ~ 1000sccm, and the throughput ratio of described carbonaceous gas and described protection gas is 2 ~ 10:1;
Be 1:0.8 ~ 1.2 according to mass ratio, described carbon nanometer wall mixed with muriate intercalator, is heated to 460 DEG C ~ 550 DEG C insulation reaction 2 hours ~ 6 hours, obtain muriatic intercalation carbon nanometer wall; And
It is 1 gram: 10 milliliters ~ 100 milliliters according to mass volume ratio, described muriatic intercalation carbon nanometer wall is mixed with ionic liquid, and be placed in the constant parallel magnetic field centrifugal treating that magneticstrength is 0.01 tesla ~ 1 tesla, obtain reaction solution, filter described reaction solution and obtain graphene nanobelt.
2. the preparation method of graphene nanobelt according to claim 1, is characterized in that, before the described metal substrate heating after etching, also comprises the step that the described metal substrate after to etching adopts deionized water, ethanol and acetone to clean successively.
3. the preparation method of graphene nanobelt according to claim 1, is characterized in that, described acid solution is hydrochloric acid soln, sulphuric acid soln or salpeter solution; The concentration of described acid solution is 0.1mol/L ~ 0.5mol/L; The etching period of described metal substrate in described acid solution is 60 seconds ~ 180 seconds.
4. the preparation method of graphene nanobelt according to claim 1, is characterized in that, described metal substrate is the one in iron foil, nickel foil and cobalt paper tinsel.
5. the preparation method of graphene nanobelt according to claim 1, is characterized in that, described carbonaceous gas is the one in methane, ethane, propane, acetylene and alcohol vapour; Described protection gas is at least one in helium, nitrogen and argon gas.
6. the preparation method of graphene nanobelt according to claim 1, it is characterized in that, before described muriatic intercalation carbon nanometer wall is mixed with described ionic liquid, also comprise the step to described muriatic intercalation carbon nanometer wall cleaning and drying: adopt muriatic intercalation carbon nanometer wall described in washed with de-ionized water, after 80 DEG C ~ 100 DEG C vacuum-drying to constant weight.
7. the preparation method of graphene nanobelt according to claim 1, it is characterized in that, described muriate intercalator is at least one in iron(ic) chloride, nickelous chloride, cupric chloride, cobalt chloride, Repone K, magnesium chloride, lead chloride, zinc chloride, calcium chloride and bariumchloride; Described ionic liquid is 1-ethyl-3-methylimidazole Tetrafluoroboric acid, 1-ethyl-3-methylimidazole fluoroform sulfimide, 1-ethyl-3-methylimidazole trifluoromethanesulfonic acid, 1-ethyl-3-methylimidazole trifluoroacetic acid, 1-ethyl-3-methylimidazole fluoroform sulphonyl carbon, 1-ethyl-3-methylimidazole five acetyl fluoride imines, 1-ethyl-3-methylimidazole two cyaniding nitrogen, 1-ethyl-3,5-methylimidazole fluoroform sulfimide, 1, at least one in 3-diethyl-4-methylimidazole fluoroform sulfimide and 1,3-diethyl-5-Methylimidazole fluoroform sulfimide.
8. the preparation method of graphene nanobelt according to claim 1, is characterized in that, the condition of described centrifugal treating is: rotating speed 1000 revs/min ~ 10000 revs/min, 10 minutes ~ 100 minutes treatment time.
9. the preparation method of graphene nanobelt according to claim 1, it is characterized in that, also comprise the step to described graphene nanobelt cleaning and drying: described graphene nanobelt is refiltered 3 times ~ 6 times through adding organic solvent, add again deionized water filter until filtrate with Silver Nitrate detect without chlorion, then by filter residue in 60 DEG C ~ 100 DEG C vacuum-dryings to constant weight.
10. the preparation method of graphene nanobelt according to claim 9, is characterized in that, described organic solvent is 1-Methyl-2-Pyrrolidone or DMF.
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| WO2012149257A2 (en) * | 2011-04-28 | 2012-11-01 | Cornell University | Graphene nanoribbons, methods of making same, and uses thereof |
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| WO2012149257A2 (en) * | 2011-04-28 | 2012-11-01 | Cornell University | Graphene nanoribbons, methods of making same, and uses thereof |
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