CN115231562A - Method for preparing MXene based on ionic liquid microemulsion stripping - Google Patents
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- CN115231562A CN115231562A CN202210901007.5A CN202210901007A CN115231562A CN 115231562 A CN115231562 A CN 115231562A CN 202210901007 A CN202210901007 A CN 202210901007A CN 115231562 A CN115231562 A CN 115231562A
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- 239000002608 ionic liquid Substances 0.000 title claims abstract description 73
- 239000004530 micro-emulsion Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002243 precursor Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 13
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 10
- 238000005119 centrifugation Methods 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000002604 ultrasonography Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 3
- -1 1-ethyl-3-methylimidazole hexafluorophosphate Chemical compound 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 229910052731 fluorine Inorganic materials 0.000 claims description 12
- 238000001291 vacuum drying Methods 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 239000005457 ice water Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 229920000136 polysorbate Polymers 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000001308 synthesis method Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 12
- 238000005530 etching Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 238000003760 magnetic stirring Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002135 nanosheet Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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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- Engineering & Computer Science (AREA)
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- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Colloid Chemistry (AREA)
Abstract
The invention discloses a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the steps of (1) mixing water, a surfactant and ionic liquid, and obtaining the ionic liquid microemulsion after ultrasonic treatment and stirring; (2) Adding acid into the ionic liquid microemulsion to adjust the pH value to 0-5, then adding MAX precursor to make the concentration of the MAX precursor be 0.1-10 g/L, stirring and reacting at the temperature of 10-80 ℃, and obtaining MXene through ultrasound, centrifugation, washing and drying. Compared with the existing synthesis method, the method provided by the invention is green and safe, has mild conditions, can obviously reduce energy consumption, and is beneficial to large-scale production.
Description
Technical Field
The invention belongs to the technical field of nano materials, and relates to a method for preparing MXene based on ionic liquid microemulsion stripping.
Background
MXene is a novel two-dimensional material except graphene, boron nitride nanosheets and molybdenum disulfide nanosheets, and refers to two-dimensional transition metal carbide, nitride or carbonitride. A large number of researches show that MXene has more excellent conductivity, film forming property and hydrophilicity compared with other two-dimensional nano materials, and has large specific surface area, high mechanical strength and good ductility. Therefore, MXene has been widely studied and applied in the fields of optics, electronics, energy storage, electromagnetic shielding, biomedicine and the like. Researchers have found various methods for preparing MXene, mainly including hydrofluoric acid etching, hydrothermal etching, lewis acid salt etching, algae extraction etching, electrochemical etching, molten salt method and photoetching, and a method using a mixture of fluoride salt and acid as an etchant is more adopted, but the method is still a strong acid environment, is dangerous to operate and is easy to generate fluorine-containing harmful substances. Although there are some mild, low-fluorine preparation methods, these methods all have the disadvantages of low efficiency, high energy consumption, etc. Therefore, the development of a mild, low-fluorine, green and efficient MXene synthesis method has great promotion effect on expanding the MXene application field and accelerating the commercialization process of the MXene.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a mild, low-fluorine, green and efficient method for preparing MXene based on ionic liquid microemulsion stripping.
In order to solve the technical problems, the invention adopts the following technical scheme.
A method for preparing MXene based on ionic liquid microemulsion stripping comprises the following steps:
(1) Mixing water, a surfactant and ionic liquid, and performing ultrasonic treatment and stirring to obtain ionic liquid microemulsion, wherein in the ionic liquid microemulsion, the mass fraction of the water is 50-90%, and the mass ratio of the surfactant to the ionic liquid is 10: 1;
(2) Adding acid into the ionic liquid microemulsion to adjust the pH value to be 0-5, then adding MAX precursor to enable the concentration of the MAX precursor in the ionic liquid microemulsion to be 0.1-10 g/L, stirring and reacting at the temperature of 10-80 ℃, and obtaining MXene through ultrasound, centrifugation, washing and drying.
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in step (1), the ionic liquid is a fluorine-containing ionic liquid with a hydrolysis function, and the fluorine-containing ionic liquid is one or more of 1-ethyl-3-methylimidazole hexafluorophosphate, 1-dodecyl-3-methylimidazole hexafluorophosphate, 1-butyl-3-methylimidazole hexafluorophosphate, 1-hexyl-3-methylimidazole hexafluorophosphate, 1-octyl-3-methylimidazole hexafluorophosphate and 1-hexyl-3-methylimidazole tetrafluoroborate.
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in the step (1), the surfactant is one or more of Triton-100, triton-405 and Tween 20-80 series.
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in the step (2), the concentration of the MAX precursor in the ionic liquid microemulsion is 0.1-2 g/L; the temperature of the stirring reaction is 20-40 ℃.
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in the step (2), the MAX precursor comprises Ti 3 AlC 2 And/or V 2 AlC。
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in the step (2), the acid comprises one or more of hydrochloric acid, sulfuric acid and nitric acid.
In the method for preparing MXene based on ionic liquid microemulsion stripping, preferably, in the step (2), the stirring reaction time is 24-72 h.
Preferably, in the step (2), the ultrasonic time is 30-60 min, the ultrasonic is performed in an ice-water bath, the centrifugation speed is 8000-10000 r/min, the centrifugation time is 30-60 min, the washing is performed by respectively washing with absolute ethyl alcohol and water for 3 times, the drying is vacuum drying, the vacuum drying temperature is 20-40 ℃, and the vacuum drying time is 0.1-24 h.
Preferably, in the step (1), the ultrasonic time is 10min to 30min, and the stirring time is 30min to 60min.
In the invention, the product of the preparation method is multilayer MXene, the size of the multilayer MXene is 1-3 mu m, and the surface of the multilayer MXene contains end groups such as O, F and the like.
In the invention, the ionic liquid microemulsion is an ionic liquid-in-water type ionic liquid microemulsion.
Compared with the prior art, the invention has the advantages that:
the synthesis method utilizes MAX raw materials, adopts ionic liquid microemulsion prepared from ionic liquid, surfactant and water as reaction liquid, and realizes MXene synthesis under the stirring conditions of weak acid, normal pressure and relatively low temperature. According to the invention, products modified by different functional groups can be obtained by adjusting the type of the ionic liquid, so that the performance of the material is influenced. Compared with the existing synthesis method, the method is green and safe, has mild conditions, obviously reduces energy consumption, and can realize large-scale production.
The invention takes the fluorine-containing ionic liquid microemulsion and the acid as the etching agent, reduces the acidity and the fluorine content of the reaction system, and improves the operability of large-scale production. The invention utilizes the high-stability and environment-friendly ionic liquid as the microemulsion component, thereby not only ensuring the stability of the reaction system, but also reducing the environmental pollution.
Drawings
Fig. 1 is a mechanism diagram of the method for preparing MXene based on ionic liquid microemulsion stripping of examples 1-6 of the present invention.
Fig. 2 is a scanning electron micrograph of MXene obtained in example 1 of the present invention.
Fig. 3 is a charge-discharge curve diagram of MXene obtained in example 1 of the present invention under different current densities.
Detailed Description
The invention is further described below with reference to the drawings and the specific preferred embodiments, without thereby limiting the scope of protection of the invention. The materials and equipment used in the following examples are commercially available.
In the following examples, the MAX precursor used is Ti 3 AlC 2 Or V 2 AlC and acid are hydrochloric acid, the mass ratio of the ionic liquid to TX-100 is fixed to be 0.1, and the water content of the system is 0.8.
Example 1
The method for preparing MXene based on ionic liquid microemulsion stripping, shown in figure 1, comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-butyl-3-methylimidazolium hexafluorophosphate and 25.4545g of triton-100 (TX-100) are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion with the total mass of about 140g is obtained.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =0.3, and then 0.07g of MAX precursor Ti was weighed 3 AlC 2 The MAX precursor was brought to a concentration of 0.5g/L and stirred at 30 ℃ for 24 hours. After the reaction is finished, ultrasonically treating the reaction solution in an ice-water bath for 1 hour, standing for 1 hour, centrifuging the upper suspension at 8000r/min for 30 minutes to obtain black precipitate, washing with absolute ethyl alcohol and water for three times respectively, and vacuum drying at 30 ℃ for 24 hours to obtain Ti 3 C 2 T X MXene. The Al of the obtained MXene is obviously etched, and the obtained MXene has obvious pseudocapacitance characteristics.
As shown in figure 1, which is a mechanism diagram (flow chart) for preparing MXene by an ionic liquid microemulsion method, fluoride generated by hydrolysis of fluorine-containing ionic liquid is used for carrying out in-situ etching on an Al layer in MAX under an acidic condition to generate interlayer spacing, and part of MXene is stripped. As shown in fig. 2, which is a scanning electron microscope photograph of the MXene obtained in this example, it can be seen that the obtained MXene has a multilayer structure, and Al is significantly etched. Fig. 3 is a charge-discharge curve of MXene obtained in this example, and it can be seen that MXene exhibits a significant pseudocapacitance characteristic, and there is a significant plateau portion in the charge-discharge curve, which illustrates the existence of faraday process, which may be attributed to the high specific surface area and the large number of active sites generated after MAX is etched.
Example 2
The invention relates to a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-butyl-3-methylimidazolium hexafluorophosphate and 25.4545g of TX-100 are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion is obtained, wherein the total mass is 140g.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =0.3, and then 0.07g of MAX precursor Ti was weighed 3 AlC 2 Adjusting the concentration to 0.5g/L, stirring at 30 deg.C for 48 hr, after reaction, ultrasonically treating the reaction solution in ice water bath for 1 hr, standing for 1 hr, centrifuging the upper layer suspension at 8000r/min for 30min to obtain black precipitate, washing with anhydrous ethanol and water for three times, and vacuum drying at 30 deg.C for 24 hr to obtain Ti 3 C 2 T X MXene, the Al of which is clearly etched, has significant pseudocapacitive characteristics.
Example 3
The invention relates to a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-butyl-3-methylimidazolium hexafluorophosphate and 25.4545g of TX-100 are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion is obtained, wherein the total mass is 140g.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =1, and then 0.07g of MAX precursor Ti was weighed 3 AlC 2 Stirring at 30 deg.C for 48 hr to make the concentration of the suspension 0.5g/L, ultrasonically treating the reaction solution in ice water bath for 1 hr, standing for 1 hr, centrifuging the upper suspension at 8000r/min for 30min to obtain black precipitate, washing with anhydrous ethanol and water for three times, and vacuum drying at 30 deg.C for 24 hrWhen (i) is in contact with a titanium compound to obtain Ti 3 C 2 T X MXene, the Al of which is clearly etched, has significant pseudocapacitance characteristics.
Example 4
The invention relates to a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-hexyl-3-methylimidazolium tetrafluoroborate and 25.4545g of TX-100 are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion with the total mass of 140g is obtained.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =0.3, and then 0.07g of MAX precursor Ti was weighed 3 AlC 2 Adjusting the concentration to 0.5g/L, stirring at 30 deg.C for 24 hr, after reaction, ultrasonically treating the reaction solution in ice water bath for 1 hr, standing for 1 hr, centrifuging the upper layer suspension at 8000r/min for 30min to obtain black precipitate, washing with anhydrous ethanol and water for three times, and vacuum drying at 30 deg.C for 24 hr to obtain Ti 3 C 2 T X MXene, the Al of which is clearly etched, has significant pseudocapacitance characteristics.
Example 5
The invention relates to a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-hexyl-3-methylimidazolium hexafluorophosphate and 25.4545g of TX-100 are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion is obtained, wherein the total mass is 140g.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =0.3, and then 0.07g of MAX precursor Ti was weighed 3 AlC 2 Stirring at 30 deg.C for 24 hr to make its concentration be 0.5g/L, after reaction, making reaction liquor undergo the process of ultrasonic treatment in ice-water bath for 1 hr, then standing for 1 hr, centrifuging upper layer suspension at 8000r/min for 30min to obtain black precipitate, respectively washing with absolute ethyl alcohol and water three times, vacuum drying at 30 deg.C for 24 hr to obtain Ti 3 C 2 T X MXene, the Al of which is clearly etched, has significant pseudocapacitance characteristics.
Example 6
The invention relates to a method for preparing MXene based on ionic liquid microemulsion stripping, which comprises the following steps:
(1) 112g of water is weighed in a beaker, 2.5455g of 1-hexyl-3-methylimidazolium tetrafluoroborate and 25.4545g of TX-100 are added, ultrasonic treatment is carried out for 10min, magnetic stirring is carried out for 60min, and clear and transparent ionic liquid microemulsion with the total mass of 140g is obtained.
(2) Hydrochloric acid was added to the ionic liquid microemulsion prepared above to adjust pH =0.3, and then 0.07g of MAX precursor V was weighed 2 Adjusting AlC concentration to 0.5g/L, stirring at 30 deg.C for 48 hr, ultrasonically treating the reaction solution in ice water bath for 1 hr, standing for 1 hr, centrifuging the upper layer suspension at 8000r/min for 30min to obtain black precipitate, washing with anhydrous ethanol and water for three times, and vacuum drying at 30 deg.C for 24 hr to obtain V 2 CT X MXene, the Al of which is clearly etched, has significant pseudocapacitance characteristics.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (9)
1. A method for preparing MXene based on ionic liquid microemulsion stripping is characterized by comprising the following steps:
(1) Mixing water, a surfactant and ionic liquid, and performing ultrasonic treatment and stirring to obtain ionic liquid microemulsion, wherein in the ionic liquid microemulsion, the mass fraction of the water is 50-90%, and the mass ratio of the surfactant to the ionic liquid is 10: 1;
(2) Adding acid into the ionic liquid microemulsion to adjust the pH value to be 0-5, then adding MAX precursor to enable the concentration of the MAX precursor in the ionic liquid microemulsion to be 0.1-10 g/L, stirring and reacting at the temperature of 10-80 ℃, and obtaining MXene through ultrasound, centrifugation, washing and drying.
2. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in claim 1, wherein in step (1), the ionic liquid is a fluorine-containing ionic liquid with hydrolysis function, and the fluorine-containing ionic liquid is one or more of 1-ethyl-3-methylimidazole hexafluorophosphate, 1-dodecyl-3-methylimidazole hexafluorophosphate, 1-butyl-3-methylimidazole hexafluorophosphate, 1-hexyl-3-methylimidazole hexafluorophosphate, 1-octyl-3-methylimidazole hexafluorophosphate and 1-hexyl-3-methylimidazole tetrafluoroborate.
3. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in claim 1, wherein in step (1), the surfactant is one or more of Triton-100, triton-405 and Tween 20-80 series.
4. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in claim 1, wherein in step (2), the concentration of MAX precursor in ionic liquid microemulsion is 0.1-2 g/L; the temperature of the stirring reaction is 20-40 ℃.
5. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in claim 1, wherein in step (2), the MAX precursor comprises Ti 3 AlC 2 And/or V 2 AlC。
6. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in any one of claims 1-5, wherein in step (2), the acid comprises one or more of hydrochloric acid, sulfuric acid and nitric acid.
7. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in any one of claims 1-5, wherein in step (2), the stirring reaction time is 24-72 h.
8. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in any one of claims 1-5, wherein in step (2), the time of the ultrasound is 30 min-60 min, the ultrasound is performed in ice water bath, the speed of the centrifugation is 8000 r/min-10000 r/min, the time of the centrifugation is 30 min-60 min, the washing is 3 times of each washing with absolute ethanol and water, the drying is vacuum drying, the temperature of the vacuum drying is 20-40 ℃, and the time of the vacuum drying is 0.1 h-24 h.
9. The method for preparing MXene based on ionic liquid microemulsion stripping as claimed in any one of claims 1-5, wherein in step (1), the time of the ultrasonic treatment is 10 min-30 min, and the time of the stirring is 30 min-60 min.
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