CN115159525A - MXene slurry and preparation method thereof - Google Patents

MXene slurry and preparation method thereof Download PDF

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CN115159525A
CN115159525A CN202210906493.XA CN202210906493A CN115159525A CN 115159525 A CN115159525 A CN 115159525A CN 202210906493 A CN202210906493 A CN 202210906493A CN 115159525 A CN115159525 A CN 115159525A
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mxene
alc
slurry
precipitate
centrifuging
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何大平
司运发
张博涵
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Sanya Hanene Graphene Technology Research Institute Co ltd
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Sanya Hanene Graphene Technology Research Institute Co ltd
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Abstract

The invention provides MXene slurry and a preparation method thereof. The preparation method of MXene slurry comprises the following steps: preparing an acidic solution containing fluoride salt; adding MAX powder into an acidic solution to perform water bath reaction to obtain a mixed solution; centrifuging the mixed solution and washing to obtain a precipitate; adding water into the precipitate, shaking for layering, centrifuging to collect supernatant, and collecting supernatantCentrifuging the mixture for the second time to obtain MXene slurry. In the preparation method of MXene slurry, the used acid is medium-strong acid such as HCl and the like, compared with H 3 BO 3 、CH 3 Weak acids such as COOH and the like can enable the etching process to be more intensive and thorough, and the material yield is higher; the preparation method of MXene slurry is simple and feasible, low in equipment requirement, simple to operate and easy to industrialize; the MXene slurry prepared by the method has excellent conductivity and extremely high length-diameter ratio, and has wide commercial prospect.

Description

MXene slurry and preparation method thereof
Technical Field
The invention relates to the technical field of materials and inorganic chemistry, in particular to MXene slurry and a preparation method thereof.
Background
The two-dimensional MXene nano material has great attention on the excellent electronic conductivity, large specific surface area, excellent mechanical property, unique two-dimensional structure and abundant surface chemical properties, and has wide application in the fields of electrochemical energy storage, electromagnetic shielding, intelligent sensing, biomedicine and the like. To fully exploit the potential of MXene materials in various fields, large-scale production of such materials is required to meet the demand.
The prior art discloses the preparation of Ti of the order of 50g by HF etching 3 C 2 T x MXene material, but the yield was only 52% and the HF acid used directly in the preparation was extremely hazardous. Therefore, a large-scale preparation method applicable to MXene series materials needs to be found.
At present, methods such as a molten salt etching method, a hydrothermal alkaline etching method, a CVD method, an electrochemical etching method and the like are proposed for preparing the MXene material, but the methods have great limitations. For example, the prior art discloses
From Ti in an argon atmosphere at 550 ℃ using a molten fluoride salt 4 AlN 3 Etching and removing Al in the precursor to synthesize Ti 4 N 3 T x However, the high temperature conditions and excess fluoride salt make it difficult to separate MXene from the product. The prior art also discloses a hydrothermal alkaline etching technology for synthesizing fluorine-free high-purity Ti 3 C 2 T x However, the severe reaction conditions have extremely high requirements on equipment and are not easy to scale up. CVD methods and electrochemical etching have also been recently proposed for the preparation of MXene, but are long, energy intensive and low yielding. This is far from sufficient for large scale production of MXene. Therefore, a large-scale MXene material preparation method with high yield, low cost and simple equipment needs to be found.
Disclosure of Invention
In view of the above, the present invention provides an MXene slurry and a method for preparing the same, so as to solve or at least partially solve the technical problems in the prior art.
In a first aspect, the invention provides a method for preparing MXene slurry, comprising the following steps:
preparing an acidic solution containing fluoride salt;
adding MAX powder into an acid solution to react in a water bath to obtain a mixed solution;
centrifuging the mixed solution and washing to obtain a precipitate;
adding water into the precipitate, oscillating, layering and centrifuging, collecting supernatant, and centrifuging the supernatant again to obtain MXene slurry;
wherein the acid used in the acidic solution comprises HCl and H 2 SO 4 、HNO 3 、HBr、HClO 3 At least one of (1).
Preferably, the MXene slurry is prepared by the method that the fluoride salt comprises LiF, naF, KF, csF, rbF and CaF 2 、ZnF 2 、MgF 2 、NiF 2 、BaF 2 、SrF 2 、FeF 2 、NH 4 HF 2 At least one of (1).
Preferably, the water bath reaction temperature of the preparation method of the MXene slurry is 25-100 ℃ and the time is 20-100 hours.
Preferably, in the preparation method of MXene slurry, the MAX powder comprises Ti 3 AlC 2 、Ti 2 AlC、Ti 2 AlN、Ti 3 AlN 2 、Ti 4 AlN 3 、Ti 3 AlCN、V 2 AlC、V 3 AlC 2 、V 4 AlC 3 、Nb 2 AlC、Nb 3 AlC 2 、Nb 4 AlC 3 、Mo 2 AlC、Mo 3 AlC 2 、Ta 2 AlC、Ta 3 AlC 2 、Ta 4 AlC 3 、Cr 2 AlC、TiNbAlC、TiVAlC、Ti 2 VAlC 2 、Ti 2 NbAlC 2 、Ti 2 TaAlC 2 、Ti 2 Ta 2 AlC 3 、VNbAlC、VCrAlC、Mo 2 TiAlC 2 、Mo 2 Ti 2 AlC 3 、Mo 3 VAlC 3 、Mo 2 Ga 2 AlC 3 、Cr 2 TiAlC 2 、TiVNbMoAlC 3 At least one of (1).
Preferably, the concentration of the acidic solution is 5 to 12M, and the mass volume ratio of the MAX powder to the fluorinated salt is (50 to 100) g, (50 to 75) g, (500 to 800) mL.
Preferably, the preparation method of the MXene slurry comprises the steps of adding the MAX powder into water before adding the MAX powder into the acidic solution, stirring for 10 to 20min, standing for 10 to 20min, filtering, collecting the precipitate, and drying.
Preferably, in the preparation method of the MXene slurry, the average particle size of the MAX powder is 5-15 μm.
Preferably, the MXene slurry is prepared by centrifuging the mixed solution at 1000 to 5000 rpm and washing to obtain a precipitate.
Preferably, the preparation method of the MXene slurry comprises the steps of adding water into the precipitate, carrying out shaking layering at 200-1000 rpm, carrying out centrifugation to collect supernatant, and carrying out centrifugation on the supernatant again at 5000-10000 rpm to obtain the MXene slurry.
In a second aspect, the invention also provides MXene slurry prepared by the preparation method.
Compared with the prior art, the preparation method of MXene slurry has the following beneficial effects:
the MXene slurry preparation method uses HCl and H as the acid 2 SO 4 、HNO 3 、HBr、HClO 3 Moderately strong acids compared to H 3 BO 3 、CH 3 Weak acids such as COOH and the like can enable the etching process to be more intensive and thorough, and the material yield is higher; the preparation method of MXene slurry is simple and feasible, low in equipment requirement, simple to operate and easy to industrialize; the MXene slurry prepared by the method has excellent conductivity and extremely high length-diameter ratio, and has wide commercial prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic flow chart of a preparation method of MXene slurry according to the present invention;
fig. 2 is a photograph of an MXene slurry prepared in example 1;
fig. 3 is an SEM image of MXene slurry prepared in example 1;
FIG. 4 is a TEM image of MXene slurry prepared in example 1;
fig. 5 is a TEM image of MXene slurry prepared in example 2;
fig. 6 is a TEM image of MXene slurry prepared in example 3;
fig. 7 is a TEM image of MXene slurry prepared in example 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
An embodiment of the application provides a preparation method of an MXene slurry, as shown in FIG. 1, including the following steps:
s1, preparing an acid solution containing fluoride salt;
s2, adding MAX powder into an acidic solution to perform water bath reaction to obtain a mixed solution;
s3, centrifuging the mixed solution and washing to obtain a precipitate;
s4, adding water into the precipitate, shaking for layering, centrifuging, collecting supernatant, and centrifuging the supernatant again to obtain MXene slurry;
wherein the acid used in the acidic solution comprises HCl and H 2 SO 4 、HNO 3 、HBr、HClO 3 At least one of (a).
In the method for preparing MXene slurry of the present application, the acids used are HCl and H 2 SO 4 、HNO 3 、HBr、HClO 3 Moderately strong acids, compared with H 3 BO 3 、CH 3 Weak acids such as COOH will make the etching process more intensive and complete and the material yield higher. In particular, H 3 BO 3 And CH 3 COOH preparation of MXene is not suitable for preparing slurries which result in either colloidal solutions after sonication or non-delaminated multi-layer powders and are generally prepared at low levels, around 0.02 g.
In some embodiments, the fluoride salt comprises LiF, naF, KF, csF, rbF, caF 2 、ZnF 2 、MgF 2 、NiF 2 、BaF 2 、SrF 2 、FeF 2 、NH 4 HF 2 At least one of (1).
In some embodiments, the water bath reaction temperature is 25 to 100 ℃ and the time is 20 to 100 hours.
In some embodiments, the MAX powder comprises Ti 3 AlC 2 、Ti 2 AlC、Ti 2 AlN、Ti 3 AlN 2 、Ti 4 AlN 3 、Ti 3 AlCN、V 2 AlC、V 3 AlC 2 、V 4 AlC 3 、Nb 2 AlC、Nb 3 AlC 2 、Nb 4 AlC 3 、Mo 2 AlC、Mo 3 AlC 2 、Ta 2 AlC、Ta 3 AlC 2 、Ta 4 AlC 3 、Cr 2 AlC、TiNbAlC、TiVAlC、Ti 2 VAlC 2 、Ti 2 NbAlC 2 、Ti 2 TaAlC 2 、Ti 2 Ta 2 AlC 3 、VNbAlC、VCrAlC、Mo 2 TiAlC 2 、Mo 2 Ti 2 AlC 3 、Mo 3 VAlC 3 、Mo 2 Ga 2 AlC 3 、Cr 2 TiAlC 2 、TiVNbMoAlC 3 At least one of (a).
In some embodiments, the concentration of the acidic solution is 5-12M, and the mass volume ratio of the MXene powder to the fluoride salt to the acidic solution is (50-100) g, (50-75) g, (500-800) mL.
In some embodiments, before adding the MAX powder to the acidic solution, the method further comprises adding the MAX powder to water, stirring for 10 to 20min, standing for 10 to 20min, filtering, collecting the precipitate, and drying.
Specifically, in the above examples, 50 to 200g MAX powder was added to 1000 to 3000 mL of water
Stirring for 10 to 20min, standing for 10 to 20min, discarding the supernatant, filtering, collecting the precipitate, and drying to obtain MAX powder; in practice, the dried MAX powder may be added to water again, stirred, allowed to stand, filtered and dried as the case may be, and the above process may be repeated for a plurality of times, for example, 3 to 6 times. Adding the MAX powder into water, and stirring to ensure that the average particle size of the MAX powder is 5-15 μm.
In some embodiments, the MAX powder has an average particle size of 5 to 15 μm.
In some embodiments, the mixed solution is washed after centrifugation at 1000 to 5000 rpm to obtain a precipitate.
In some embodiments, water is added into the precipitate, the precipitate is subjected to shaking and layering at 200 to 1000 rpm, then the supernatant is centrifuged and collected, and the supernatant is centrifuged again at 5000 to 10000 rpm to obtain MXene slurry.
Specifically, the mixed solution is centrifuged at 1000 to 5000 rpm and washed to be neutral to obtain a precipitate; adding water into the precipitate, oscillating at 200-1000 rpm for 10 min for layering, centrifuging at 1000-5000 rpm, collecting supernatant, and stopping collection when the supernatant becomes light green; centrifuging the collected supernatant at 5000 to 10000 rpm to obtain MXene slurry. It is to be noted that the target product is distributed in the supernatant to form a colloid-like solution, but the product after centrifugation does not agglomerate but corresponds to a simple sedimentation.
The preparation method of the MXene slurry is simple and feasible, low in equipment requirement, simple to operate and easy to industrialize; the MXene slurry prepared by the method has excellent conductivity and extremely high length-diameter ratio, and has wide commercial prospect.
Based on the same inventive concept, the embodiment of the application also provides MXene slurry prepared by the preparation method.
The following further describes the preparation of MXene slurry according to the present application with specific examples. This section further illustrates the present disclosure in connection with specific examples, which should not be construed as limiting the invention. The technical means employed in the examples are conventional means well known to those skilled in the art, unless otherwise specified. Reagents, methods and apparatus employed in the present invention are conventional in the art unless otherwise indicated.
Example 1
The embodiment of the application provides a preparation method of MXene slurry, which comprises the following steps:
s1, mixing 100g of Ti with 400 meshes (38 mu m) 3 AlC 2 Adding the powder into a 2500 mL beaker filled with 2000 mL deionized water, stirring for 20min, standing for 20min, removing supernatant, and collecting bottom precipitate; repeating the process for 6 times, and drying the finally obtained precipitate to obtain Ti with the average grain diameter of 5-15 mu m 3 AlC 2 A powder;
s2, dissolving 75 g LiF in 800 mL of hydrochloric acid with the concentration of 10M to obtain an acid solution;
s3, mixing 50g of Ti in the step S1 3 AlC 2 Adding the powder into an acid solution, reacting for 36 h at 25 ℃, centrifuging, and washing the precipitate to be neutral;
s4, adding water into the precipitate obtained in the step S3, oscillating at 200 rpm for layering for 10 min, centrifuging at 1500 rpm for 10 min, collecting supernatant, repeatedly collecting the supernatant until the color of the supernatant turns into light green, and stopping collecting;
s5, further centrifuging the supernatant collected in the step S4 at the rotating speed of 7000 rpm for 30 min to obtain the stripped large-size and high-quality Ti 3 C 2 T x MXene nano-sheet (namely MXene slurry); the concentration of the extract can reach 90 mg mL −1 The conductivity can reach 6800S cm −1 。
The yield of MXene slurry prepared in example 1 was up to 83.2%.
Fig. 2 is a photograph of an MXene slurry prepared in example 1;
fig. 3 is an SEM photograph of the MXene slurry prepared in example 1, showing that the product lateral dimension averages around 10 μm.
FIG. 4 is a TEM photograph of the MXene slurry obtained in example 1, showing that the product thickness is very small, indicating that the product consists of a single or few layers of Ti 3 C 2 T x MXene.
Example 2
The embodiment of the application provides a preparation method of MXene slurry, which comprises the following steps:
s1, mixing 100g Ti of 400 meshes (38 mu m) 2 Adding AlC powder into a 2500 mL beaker filled with 2000 mL deionized water, stirring for 20min, standing for 20min, removing supernatant, and collecting bottom precipitate; repeating the process for 6 times, and drying the finally obtained precipitate to obtain Ti with the average grain diameter of 5 to 15 mu m 2 AlC powder;
s2, dissolving 50g of LiF in 600 mL of 9M hydrochloric acid to obtain an acidic solution;
s3, mixing 50g of Ti in the step S1 2 Adding AlC powder into an acidic solution, reacting at 40 ℃ for 40 h, centrifuging, and washing the precipitate to be neutral;
s4, adding water into the precipitate obtained in the step S3, shaking at 300 rpm for layering for 5 min, centrifuging at 1800 rpm for 10 min, collecting supernatant, repeatedly collecting the supernatant until the color of the supernatant turns into light green, and stopping collecting;
s5, further centrifuging the supernatant in the step S4 at the rotating speed of 6000 rpm for 30 min to obtain the stripping solutionLatter large-size, high-quality Ti 2 CT x MXene nano-sheet (namely MXene slurry); the concentration of the extract can reach 75 mg mL −1 The conductivity can reach 4300S cm −1 。
The yield of MXene slurry prepared in example 2 can reach 84.7%.
FIG. 5 is a TEM photograph of the MXene slurry obtained in example 2 showing very small product thickness, indicating that the product consists of a single or few layers of Ti 2 CT x MXene.
Example 3
The embodiment of the application provides a preparation method of MXene slurry, which comprises the following steps:
s1, mixing 100g of V with 400 meshes (38 mu m) 2 Adding AlC powder into a 2500 mL beaker filled with 2000 mL deionized water, stirring for 20min, standing for 20min, removing supernatant, and collecting bottom precipitate; repeating the above process for 6 times, and drying the final precipitate to obtain V with average particle diameter of 5-15 μm 2 AlC powder;
s2, dissolving 50g of NaF in 500 mL of 10M hydrochloric acid to obtain an acid solution;
s3, 50g of V in the step S1 2 Adding AlC powder into an acidic solution, reacting at 35 ℃ for 40 h, centrifuging, and washing the precipitate to be neutral;
s4, adding water into the precipitate obtained in the step S3, oscillating at 200 rpm for layering for 10 min, centrifuging at 1600 rpm for 10 min, collecting supernatant, repeatedly collecting the supernatant until the color of the supernatant turns into light green, and stopping collecting;
s5, further centrifuging the supernatant collected in the step S4 at the rotating speed of 6500 rpm for 30 min to obtain the stripped large-size and high-quality V 2 CT x MXene nano-sheet (namely MXene slurry); the concentration of the extract can reach 80 mg mL −1 The conductivity can reach 1100S cm −1 。
The yield of the MXene slurry prepared in example 3 can reach 78.3%.
FIG. 6 is a TEM photograph of the MXene slurry obtained in example 3 showing very small product thickness, indicating that the product consists of a single or few V layers 2 CT x MXene.
Example 4
The embodiment of the application provides a preparation method of MXene slurry, which comprises the following steps:
s1, mixing 100g of 400 mesh (38 μm) Nb 2 Adding AlC powder into a 2500 mL beaker filled with 2000 mL deionized water, stirring for 20min, standing for 20min, removing supernatant, and collecting bottom precipitate; repeating the process for 6 times, and drying the finally obtained precipitate to obtain Nb with the average grain diameter of 5-15 mu m 2 AlC powder;
s2, dissolving 70 g of KF in 600 mL of 9M sulfuric acid to obtain an acid solution;
s3, 50g of Nb in the step S1 2 Adding AlC powder into an acidic solution, reacting for 48 h at 25 ℃, centrifuging, and washing the precipitate to be neutral;
s4, adding water into the precipitate obtained in the step S3, oscillating at 300 rpm for layering for 5 min, centrifuging at 1600 rpm for 10 min, collecting supernatant, repeatedly collecting the supernatant until the color of the supernatant turns into light green, and stopping collecting;
s5, further centrifuging the supernatant collected in the step S4 at the rotating speed of 6000 rpm for 30 min to obtain the stripped large-size and high-quality Nb 2 CT x MXene nano-sheet (namely MXene slurry); the concentration of the extract can reach 70 mg mL −1 The conductivity can reach 100S cm −1 。
The yield of MXene slurry prepared in example 4 can reach 81.6%.
FIG. 7 is a TEM photograph of the MXene slurry obtained in example 4 showing very small product thickness, indicating that the product consists of a single or few Nb layers 2 CT x MXene.
Comparative example 1
Respectively preparing 0.03 mol L −1 NH 4 HF 2 Solution and 0.09 mol L −1 H 3 BO 3 Solution of NH 4 HF 2 Solution and H 3 BO 3 The solution is magnetically stirred and uniformly mixed to prepare reaction sediment liquid; 0.02 g of Ti was weighed 3 AlC 2 Adding the powder into the reaction sediment solution, and placing the reaction sediment solution into a container with the volume of 100 mLAnd (3) putting the hydrothermal reaction kettle into an oven to carry out synthesis reaction for 3 hours at the temperature of 130 ℃. After the reaction is finished, centrifugally separating the obtained suspension, taking the lower-layer suspended matter, alternately washing the lower-layer suspended matter with deionized water and ethanol to be neutral, adding water into the obtained solid, ultrasonically stripping the solid for 2 hours, centrifuging the stripped suspension at 3500 rpm for 30 min, and collecting the supernatant to obtain Ti 3 C 2 MXene colloidal solution; the concentration of the solution reaches 3 mg mL −1 The conductivity reaches 2100S cm −l 。
The yield of the MXene colloidal solution prepared in comparative example 1 reached 54.6%.
Comparative example 2
Respectively preparing 0.03 mol L −1 NH 4 HF 2 Solution and 0.30 mol L −1 CH 3 COOH solution, adding NH 4 HF 2 Solution and CH 3 The COOH solution is magnetically stirred and uniformly mixed to prepare reaction sediment liquid; 0.02 g of Ti was weighed 3 AlC 2 Adding the powder into the reaction sediment solution, placing the reaction sediment solution into a 100 mL hydrothermal reaction kettle, and then placing the hydrothermal reaction kettle into an oven to carry out synthetic reaction for 3 h at the temperature of 130 ℃. After the reaction is finished, centrifugally separating the obtained suspension, taking the suspended matter at the lower layer, alternately washing the suspended matter with deionized water and ethanol to be neutral, adding water into the obtained solid, ultrasonically stripping the solid for 2 hours, centrifuging the stripped suspension at 3500 rpm for 30 min, and collecting the supernatant to obtain Ti 3 C 2 MXene colloidal solution with concentration of 2 mg mL −1 The conductivity reaches 2600S cm −l 。
The yield of the MXene colloidal solution prepared in comparative example 2 reached 44.3%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The preparation method of MXene slurry is characterized by comprising the following steps:
preparing an acidic solution containing fluoride salt;
adding MAX powder into an acidic solution to perform water bath reaction to obtain a mixed solution;
centrifuging the mixed solution and washing to obtain a precipitate;
adding water into the precipitate, oscillating, layering and centrifuging, collecting supernatant, and centrifuging the supernatant again to obtain MXene slurry;
wherein the acid solution contains HCl and H 2 SO 4 、HNO 3 、HBr、HClO 3 At least one of (a).
2. The method of preparing MXene slurry of claim 1, wherein the fluoride salt comprises LiF, naF, KF, csF, rbF, caF 2 、ZnF 2 、MgF 2 、NiF 2 、BaF 2 、SrF 2 、FeF 2 、NH 4 HF 2 At least one of (a).
3. The method for preparing MXene slurry according to claim 1, wherein the water bath reaction temperature is 25 to 100 ℃ and the time is 20 to 100 h.
4. The method of making the MXene slurry of claim 1, wherein the MAX powder comprises Ti 3 AlC 2 、Ti 2 AlC、Ti 2 AlN、Ti 3 AlN 2 、Ti 4 AlN 3 、Ti 3 AlCN、V 2 AlC、V 3 AlC 2 、V 4 AlC 3 、Nb 2 AlC、Nb 3 AlC 2 、Nb 4 AlC 3 、Mo 2 AlC、Mo 3 AlC 2 、Ta 2 AlC、Ta 3 AlC 2 、Ta 4 AlC 3 、Cr 2 AlC、TiNbAlC、TiVAlC、Ti 2 VAlC 2 、Ti 2 NbAlC 2 、Ti 2 TaAlC 2 、Ti 2 Ta 2 AlC 3 、VNbAlC、VCrAlC、Mo 2 TiAlC 2 、Mo 2 Ti 2 AlC 3 、Mo 3 VAlC 3 、Mo 2 Ga 2 AlC 3 、Cr 2 TiAlC 2 、TiVNbMoAlC 3 At least one of (1).
5. The method for preparing MXene slurry according to claim 1, wherein the concentration of the acidic solution is 5 to 12M, and the mass volume ratio of MAX powder, fluoride salt and acidic solution is (50 to 100) g, (50 to 75) g, (500 to 800) mL.
6. The method of preparing MXene slurry according to claim 1, wherein the adding MAX powder to the acidic solution further comprises adding MAX powder to water, stirring for 10 to 20min, standing for 10 to 20min, filtering, collecting precipitate, and drying.
7. The method of preparing MXene slurry according to claim 1, wherein the MAX powder has an average particle size of 5 to 15 μm.
8. The method for preparing MXene slurry according to claim 1, wherein the mixed solution is centrifuged at 1000 to 5000 rpm and washed to obtain a precipitate.
9. The method for preparing MXene slurry according to claim 1, wherein the MXene slurry is obtained by adding water to the precipitate, centrifuging and shaking at 200 to 1000 rpm for layering to obtain a supernatant, and centrifuging the supernatant again at 5000 to 10000 rpm.
10. An MXene slurry, characterized in that it is prepared by the preparation method of any one of claims 1 to 9.
CN202210906493.XA 2022-07-29 2022-07-29 MXene slurry and preparation method thereof Pending CN115159525A (en)

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CN116425160A (en) * 2023-04-21 2023-07-14 四川金时新能科技有限公司 Nb (Nb) alloy 4 C 3 T x MXene material and rapid preparation method thereof

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CN113083213A (en) * 2021-04-07 2021-07-09 西南科技大学 Single-layer MXene colloid and preparation method and application thereof
CN113651327A (en) * 2021-07-19 2021-11-16 西安电子科技大学芜湖研究院 Method for synthesizing and collecting MXene material under assistance of organic solvent
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CN113651327A (en) * 2021-07-19 2021-11-16 西安电子科技大学芜湖研究院 Method for synthesizing and collecting MXene material under assistance of organic solvent
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