CN114345135B - Production process and production device of MXene-based anti-swelling composite film - Google Patents
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Abstract
The invention discloses a production process and a production device of an MXene-based anti-swelling composite membrane, wherein the composite membrane is obtained by mechanically blending titanium carbide nanosheets and boron nitride nanosheets and then performing crosslinking modification, and the preparation method specifically comprises the following steps: (1) preparing boron nitride nanosheets by adopting a solvothermal method; (2) Etching the titanium aluminum carbide precursor by adopting an etching method to prepare a titanium carbide nanosheet; (3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, performing ultrasonic treatment to uniformly blend the mixture to obtain a suspension, performing polydopamine modification, introducing polyethyleneimine for crosslinking, washing a reactant precipitate obtained after the reaction is finished, and performing freeze drying to obtain the composite membrane material. The MXene/BN @ PDA/PEI film prepared by mechanical blending and covalent crosslinking can achieve the purpose of anti-swelling, has excellent oil-water separation capability, and can keep stable performance after 600h soaking.
Description
Technical Field
The invention relates to the technical field of separation membranes, in particular to a production process and a production device of an MXene-based anti-swelling composite membrane.
Background
In recent years, human activities and natural disasters have increased water pollution and shortage, and effective water purification is urgently realized. The membrane separation technology becomes one of the key technologies for environmental management and material separation due to the characteristics of simple operation, high efficiency, energy conservation and the like. The two-dimensional (2D) titanium carbide (MXene) nanosheet membrane has great application potential in the field of water environment restoration due to the excellent characteristics of regular interlayer channels and the like. However, MXene membranes swell very easily in aqueous environments, resulting in very poor sieving rejection of small molecule species. Therefore, the improvement of stability of MXene film in aqueous medium is imminent. Fortunately, the existence of functional groups on the surface of MXene membrane material provides possibility for controlling the layer spacing in order to inhibit the swelling in water environment.
Up to now, there are molecular/ionic cross-linking methods and strategies such as external environment restriction method, nanosheet hybridization and mixing strategy, etc. for 2D membrane material stability control. However, the external environment limiting method is complex to operate, and the error ratio of the test result is large, so that the method is not suitable for large-scale application. The nanosheet hybridization utilizes the interaction force between different nanosheets assembled and stacked to enhance the interlayer, so that the structural stability of the two-dimensional membrane is improved. However, this method has been slowly phased out because of its limited and uncontrollable anti-swelling effect. The crosslinking method can significantly enhance the interaction between sheets by forming a complex, a chemical bond, an electrostatic interaction, etc. between adjacent sheets through a crosslinking agent such as cations, molecules, etc., or a chemical reaction (esterification, dehydration condensation, etc.), an electrostatic interaction, etc. However, these methods can only achieve short-term antiswelling. Therefore, how to realize the anti-swelling effect, ensure the long-term stability of the composite membrane water environment and obtain the excellent water treatment effect is a problem which needs to be solved urgently.
Disclosure of Invention
In order to solve the defects mentioned in the background art, the invention aims to provide a production process and a production device of an MXene-based anti-swelling composite membrane, wherein the MXene/BN @ PDA/PEI membrane prepared by mechanical blending and covalent crosslinking can realize the purpose of anti-swelling, has excellent oil-water separation capability, and can realize the stable performance after 600h soaking.
The purpose of the invention can be realized by the following technical scheme:
an MXene-based anti-swelling composite membrane production process is characterized in that the composite membrane is obtained by mechanically blending titanium carbide nanosheets and boron nitride nanosheets and then performing crosslinking modification, and the preparation method specifically comprises the following steps:
(1) Preparing boron nitride nanosheets by adopting a solvothermal method;
(2) Etching the titanium aluminum carbide precursor by adopting an etching method to prepare a titanium carbide nanosheet;
(3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, performing ultrasonic treatment to uniformly blend the mixture to obtain a suspension, performing polydopamine modification, introducing polyethyleneimine for crosslinking, washing a reactant precipitate obtained after the reaction is finished, and freeze-drying to obtain the composite membrane material.
Further preferably, the step (1) is specifically: adding isopropanol into lithium citrate dihydrate solution, and stirring for 5-15min; then adding the h-BN into the mixed solution for uniform dispersion, and carrying out ultrasonic treatment at 150-250W for 1-3h; adding the solution obtained by ultrasonic treatment into a reaction kettle, and reacting for 22-26h at 170-190 ℃ to obtain a product A; and (3) centrifuging the product A, cleaning to remove residual lithium citrate, collecting the obtained precipitate, and drying in a vacuum oven at 35-45 ℃ for 46-50h to obtain the boron nitride nanosheet.
Further preferably, the step (2) is specifically: liF is added to a hydrochloric acid solution, followed by addition of Ti to the mixture 3 AlC 2 Powder, and the mixture is put into a tetrafluoroethylene liner to react for 24 hours at the temperature of 40-50 ℃; after the reaction, the mixture is centrifuged and washed by deionized water to reach a neutral pH value, and then dried to obtain the titanium carbide nanosheet.
Further preferably, the step (3) is specifically: mixing titanium carbide nanosheets and boron nitride nanosheets, adding the mixture into a solution, and performing ultrasonic treatment to uniformly blend the mixture to obtain a suspension; then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the suspension, and stirring for 1h at room temperature; adding 50mMol/L Tris-HCl buffer solution, uniformly dispersing, stirring at 80 ℃ for 24 hours, and drying after the reaction is finished to obtain a product B; and finally, adding a polyethyleneimine solution into the dispersion liquid of the product B, stirring for 1h at room temperature, and drying after the reaction is finished to obtain the composite membrane material.
The utility model provides an MXene base anti-swelling complex film apparatus for producing, mounting bracket including the symmetry setting, the mounting groove has been seted up to the mounting bracket inner wall, the electronic guide rail of fixed mounting in the mounting groove, be equipped with a plurality of stoving casees between the mounting bracket, stoving bottom of the case portion both sides fixed mounting leading wheel, the leading wheel slides along electronic guide rail, fixed mounting roof in the middle of the mounting bracket top, roof bottom fixed mounting joint sealing mechanism, the extraction opening has been seted up at joint sealing mechanism top, joint sealing mechanism's extraction opening and vacuum pump connection, run through in the middle of the mounting bracket bottom and set up the conveyer belt.
Further preferably, the mounting groove is the waist type, electronic guide rail includes the drive wheel, interior chain and outer chain, the drive wheel sets up in mounting groove both ends centre of a circle department, the drive wheel rotates with the mounting bracket inner wall to be connected, encircle between the drive wheel and set up interior chain, interior chain and drive wheel meshing, outer chain is fixed with the mounting groove inner wall laminating, the leading wheel both sides respectively with interior chain, outer chain meshing, the pivot of drive wheel is connected with the output shaft of first motor, first motor fixed mounting is at the mounting bracket outer wall.
Further preferably, a plurality of supporting rollers are arranged at the bottom of the upper layer of the inner chain, the supporting rollers are uniformly arranged at equal intervals, and heating wires are arranged inside the supporting rollers.
Further preferably, the top of the drying box is open, a bearing plate is horizontally and fixedly mounted in the middle of the interior of the drying box, a magnetic knocking rod is arranged below the bearing plate, the middle of the magnetic knocking rod is rotatably connected with the inner wall of the drying box through a rotating shaft, magnetic poles of the magnetic knocking rod are located at two ends, impact blocks are fixed to the end portions of the two ends of the magnetic knocking rod, and the impact blocks are made of elastic materials;
further preferably, horizontal fixed mounting magnet frame in the middle of the mounting groove, a plurality of bar magnet are all fixed on the upper and lower two sides of magnet frame, bar magnet's length direction beats the pole syntropy with magnetism, and bar magnet is even equidistance and sets up, and bar magnet's magnetic pole is located both ends, and bar magnet's north and south pole is crisscross to be set up.
Further preferably, the joint sealing mechanism includes the sealed cowling, and the sealed cowling top is fixed with the roof, and the sealed cowling bottom is uncovered, runs through between the sealed cowling and is equipped with the drive roller, and the sealing band is established to the cover between the drive roller, and a plurality of aspirating holes have been seted up on the sealing band surface, and the even equidistance of aspirating hole sets up, and sealing band all around with the sealed sliding connection of sealed cowling inner wall, the drive roller passes through the output shaft meshing of gear and second motor, second motor fixed mounting is at the mounting bracket outer wall.
The invention has the beneficial effects that:
the non-expanded (titanium carbide/boron nitride @ polydopamine/polyethyleneimine) MXene/BN @ PDA/PEI composite membrane is prepared by introducing Polyethyleneimine (PEI) and utilizing covalent crosslinking. The interaction force generated by covalent crosslinking between PEI and the nanosheet layer inhibits interlayer swelling, and is calculated by using a bragg equation to obtain the PEI/nanosheet material
The effective layer spacing of (a). The underwater super-oleophobic property and the narrow interlayer channel of the MXene/BN @ PDA/PEI composite membrane endow the composite membrane with excellent oil-water separation capability (the maximum flux is 334Lm-2h-1bar-1, the efficiency is 99.9%), and the performance can be kept stable after 600h soaking. The 2DMXene composite film can optimize the selectivity and stability of a two-dimensional film to improve the separation performance of the two-dimensional film, so that the two-dimensional film can achieve an ideal separation effect aiming at different separation systems and separation scales.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the production process of the MXene-based anti-swelling composite membrane of the present invention;
FIG. 2 is a graph showing the detection of interlayer distance in dry and wet states for four kinds of membranes prepared in example 1 of the present invention and comparative examples 1 to 3;
FIG. 3 is a schematic diagram showing the time-dependent change of the distance between the immersion layers of the original MXene membrane and the MXene/BN @ PDA/PEI composite membrane in water;
FIG. 4 is a schematic diagram showing the change of the apparent state of the MXene membrane and the MXene/BN @ PDA/PEI composite membrane soaked in water with time;
FIG. 5 is SEM images of the surface and cross section of the soaked MXene/BN @ PDA/PEI composite membrane of the invention;
FIG. 6 is a schematic diagram of the overall structure of an apparatus for producing an MXene-based anti-swelling composite film according to the present invention;
fig. 7 is a schematic view of the internal structure of an apparatus for producing an MXene-based swelling-resistant composite film according to the present invention;
fig. 8 is a schematic structural diagram of an installation frame of the MXene-based anti-swelling composite film production apparatus of the present invention;
FIG. 9 is a cross-sectional view of a drying box of an MXene-based anti-swelling composite film production apparatus according to the present invention;
FIG. 10 is a schematic structural diagram of a magnet frame of the MXene-based anti-swelling composite film production apparatus of the present invention;
fig. 11 is a sectional view of a box sealing mechanism of the production device of the MXene-based anti-swelling composite film of the invention.
In the figure:
the method comprises the following steps of 1-mounting frame, 2-mounting groove, 3-electric guide rail, 5-drying box, 6-guide wheel, 7-top plate, 8-box sealing mechanism, 9-vacuum pump, 10-conveyor belt, 11-driving wheel, 12-inner chain, 13-outer chain, 14-first motor, 15-bearing plate, 16-knocking rod, 17-knocking block, 18-magnet frame, 19-bar magnet, 20-sealing cover, 21-driving roller, 22-sealing belt, 23-air suction hole, 24-second motor and 25-supporting roller.
Detailed Description
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, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention provides a production process of an MXene-based anti-swelling composite membrane, wherein the composite membrane is obtained by mechanically blending titanium carbide nanosheets and boron nitride nanosheets and then performing crosslinking modification, and the preparation method specifically comprises the following steps:
(1) Preparing boron nitride nanosheets by adopting a solvothermal method;
(2) Etching the titanium aluminum carbide precursor by adopting an etching method to prepare a titanium carbide nanosheet;
(3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, performing ultrasonic treatment to uniformly blend the mixture to obtain a suspension, performing polydopamine modification, introducing polyethyleneimine for crosslinking, washing a reactant precipitate obtained after the reaction is finished, and performing freeze drying to obtain the composite membrane material.
Example 1
An MXene-based anti-swelling composite membrane production process comprises the following steps:
(1) Weighing 20ml of isopropanol, adding the isopropanol into 10ml of lithium citrate dihydrate solution, stirring for 5min, weighing h-BN100mg, adding the h-BN100mg into the mixed solution, uniformly dispersing, putting the mixed solution into a cell crusher, ultrasonically treating for 1h, setting the power to be 150W, adding the solution obtained by ultrasonic treatment into a reaction kettle, reacting for 22h at 170 ℃ to obtain a product A, carrying out centrifugal treatment on the obtained product A, cleaning to remove residual impurities such as lithium citrate and the like, collecting the finally obtained precipitate, and putting the precipitate into a vacuum oven to dry for 46h at 35 ℃ to obtain boron nitride nanosheets;
(2) 0.8g of LiF was added to 15ml of a 9Mol/L hydrochloric acid solution, and subsequently 0.8g of Ti was added to the mixture 3 AlC 2 Powder, placing the mixture into a tetrafluoroethylene liner to react for 22 hours at 40 ℃, centrifuging the mixture after reaction, washing the mixture by deionized water to reach a neutral pH value, and drying to obtain titanium carbide nanosheets;
(3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, uniformly blending the mixture through ultrasonic waves to obtain a suspension, weighing 45mg of dopamine hydrochloride, adding the dopamine hydrochloride into the uniformly mixed Ti 3 C 2 Stirring with BN solution at room temperature for 1h, adding 45ml of 50mMol/L Tris-HCl (PH = 8.5), stirring at 80 ℃ for 22h after uniform dispersion, drying after reaction to obtain a product B, and adding a polyethyleneimine solution into the dispersion of the product B and stirring at room temperature for 1h.
Example 2
(1) Weighing 25ml of isopropanol, adding the isopropanol into 15ml of lithium citrate dihydrate solution, stirring for 10min, weighing h-BN150mg, adding the h-BN150mg into the mixed solution, uniformly dispersing, putting the mixed solution into a cell crusher, ultrasonically treating for 2h with the power set to 200W, adding the ultrasonically obtained solution into a reaction kettle, reacting for 24h at 180 ℃ to obtain a product A, carrying out centrifugal treatment on the obtained product A, cleaning to remove residual impurities such as lithium citrate and the like, collecting the finally obtained precipitate, and putting the precipitate into a vacuum oven to dry for 48h at 40 ℃ to obtain boron nitride nanosheets;
(2) 1g LiF was added to 20ml of a 9Mol/L hydrochloric acid solution, and subsequently, 1g Ti was added to the mixture 3 AlC 2 Powder, placing the mixture in a tetrafluoroethylene liner to react for 24 hours at 45 ℃, after the reaction, centrifuging the mixture, washing the mixture with deionized water to reach a neutral pH value, and drying to obtain titanium carbide nano-sheets;
(3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, uniformly blending the mixture through ultrasonic waves to obtain a suspension, weighing 50mg of dopamine hydrochloride, adding the dopamine hydrochloride into the uniformly mixed Ti 3 C 2 Stirring with BN solution at room temperature for 1h, adding 50ml of 50mMol/L Tris-HCl (PH = 8.5), stirring at 80 ℃ for 24h after uniform dispersion, drying after reaction to obtain a product B, and adding a polyethyleneimine solution into the dispersion of the product B and stirring at room temperature for 1h.
Example 3
(1) Weighing 20ml of isopropanol, adding the isopropanol into 20ml of lithium citrate dihydrate solution, stirring for 15min, weighing h-BN200mg, adding the h-BN200mg into the mixed solution, uniformly dispersing, placing the mixed solution into a cell disruption instrument for ultrasonic treatment for 3h, setting the power to be 250W, adding the solution obtained by ultrasonic treatment into a reaction kettle, reacting for 26h at 190 ℃ to obtain a product A, carrying out centrifugal treatment on the obtained product A, cleaning to remove impurities such as residual lithium citrate, and collecting the finally obtained precipitate, and placing the precipitate into a vacuum oven to dry for 50h at 45 ℃ to obtain boron nitride nanosheets;
(2) 1.5g of LiF were added to 25ml of a 9Mol/L hydrochloric acid solution, and subsequently, 1.5g of Ti were added to the mixture 3 AlC 2 Powder, placing the mixture in a tetrafluoroethylene liner to react for 26 hours at 50 ℃, after the reaction, centrifuging the mixture, washing the mixture by deionized water to reach a neutral pH value, and drying to obtain titanium carbide nano-sheets;
(3) Mixing boron nitride nanosheets and titanium carbide nanosheets, adding the mixture into a solution, uniformly blending the mixture through ultrasonic waves to obtain a suspension, weighing 55mg of dopamine hydrochloride, adding the dopamine hydrochloride into the uniformly mixed Ti 3 C 2 After stirring with BN solution at room temperature for 1 hour, 55ml of 50mMol/L Tris-HCl (pH = 8.5) was added and dispersed uniformly to 85Stirring at the temperature of 26 hours, drying after the reaction is finished to obtain a product B, and then adding a polyethyleneimine solution into the dispersion liquid of the product B and stirring at room temperature for 1 hour.
Comparative example 1
MXene film (M-1) was prepared, supplementing the preparation method.
Comparative example 2
MXene/BN film (M-2) was prepared, supplementing the preparation method.
Comparative example 3
MXene/BN @ PDA film (M-3) was prepared, supplementing the preparation method.
Performance detection
The four kinds of membranes prepared in example 1 and comparative examples 1 to 3 were examined for interlamellar spacing in dry and wet states, and the data obtained are shown in fig. 2.
The original MXene membrane prepared in example 1 and comparative example 1 and the MXene/BN @ PDA/PEI composite membrane prepared in example 1 were soaked in water, and the apparent state and the interlayer spacing of the membrane were detected at different times, wherein the change of the apparent state of soaking in water of the membrane with time is shown in FIG. 3, and the change of the interlayer spacing of soaking in water of the membrane with time is shown in FIG. 4.
After the MXene/BN @ PDA/PEI composite membrane prepared in the embodiment 1 is soaked, the surface and the section of the membrane are analyzed through electron microscope scanning, and the surface micro-topography map of the soaked MXene/BN @ PDA/PEI composite membrane is shown as 5 (a) and the section micro-topography map is shown as 5 (b).
Supplementary additions to the analytical description of the data and pictures in fig. 2-5.
As shown in fig. 6-11, an MXene-based anti-swelling composite film production device, including a mounting rack 1 which is symmetrically arranged, a mounting groove 2 is formed in the inner wall of the mounting rack 1, an electric guide rail 3 is fixedly mounted in the mounting groove 2, a plurality of drying boxes 5 are arranged between the mounting rack 1, guide wheels 6 are fixedly mounted on two sides of the bottoms of the drying boxes 5, the guide wheels 6 slide along the electric guide rail 3, a top plate 7 is fixedly mounted in the middle of the top of the mounting rack 1, a box sealing mechanism 8 is fixedly mounted at the bottom of the top plate 7, an air suction opening is formed in the top of the box sealing mechanism 8, the air suction opening of the box sealing mechanism 8 is connected with a vacuum pump 9, and a conveyor belt 10 is arranged in the middle of the bottom of the mounting rack 1 in a penetrating manner.
Mounting groove 2 is the waist type, electronic guide rail 3 includes drive wheel 11, interior chain 12 and outer chain 13, drive wheel 11 sets up in 2 both ends centre of a circle departments of mounting groove, drive wheel 11 rotates with 1 inner wall of mounting bracket to be connected, encircle between the drive wheel 11 and set up interior chain 12, interior chain 12 meshes with drive wheel 11, outer chain 13 is fixed with the laminating of 2 inner walls of mounting groove, 6 both sides of leading wheel respectively with interior chain 12, outer chain 13 meshes, the pivot of drive wheel 11 is connected with first motor 14's output shaft, first motor 14 fixed mounting is at 1 outer wall of mounting bracket.
A plurality of supporting rollers 24 are arranged at the bottom of the upper layer of the inner chain 12, the supporting rollers 24 are evenly arranged at equal intervals, and heating wires are arranged inside the supporting rollers 24.
The top of the drying box 5 is open, a bearing plate 15 is horizontally and fixedly installed in the middle of the inside of the drying box 5, a magnetic knocking rod 16 is arranged below the bearing plate 15, the middle of the magnetic knocking rod 16 is rotatably connected with the inner wall of the drying box 15 through a rotating shaft, magnetic poles of the magnetic knocking rod 16 are located at two ends, impact blocks 17 are fixed at the end parts of the two ends of the magnetic knocking rod 16, and the impact blocks 17 are made of elastic materials;
horizontal fixed mounting magnet frame 18 in the middle of 2, a plurality of bar magnet 19 are all fixed on the upper and lower two sides of magnet frame 18, and bar magnet 19's length direction strikes pole 16 syntropy with magnetism, and bar magnet 19 is the even equidistance setting, and bar magnet 19's magnetic pole is located both ends, and bar magnet 19's north-south pole is crisscross to be set up.
The box sealing mechanism 8 comprises a sealing cover 20, the top of the sealing cover 20 is fixed with the top plate 7, the bottom of the sealing cover 20 is open, a driving roller 21 is arranged between the sealing cover 20 in a penetrating mode, a sealing belt 22 is sleeved between the driving roller 21, a plurality of air suction holes 23 are formed in the surface of the sealing belt 22, the air suction holes 23 are evenly arranged at equal intervals, the sealing belt 22 is connected with the inner wall of the sealing cover 20 in a sealing and sliding mode all around, the driving roller 12 is meshed with an output shaft of a second motor 24 through a gear, and the second motor 24 is fixedly installed on the outer wall of the installation frame 1.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (3)
1. The production process of the MXene-based anti-swelling composite membrane is characterized in that the composite membrane is obtained by mechanically blending a titanium carbide nanosheet and a boron nitride nanosheet and then performing crosslinking modification, and the preparation method specifically comprises the following steps;
(1) Preparing boron nitride nanosheets by adopting a solvothermal method;
(2) Etching the titanium aluminum carbide precursor by adopting an etching method to prepare a titanium carbide nanosheet;
(3) Mixing titanium carbide nano sheets and boron nitride nano sheets, adding the mixture into the solution, and performing ultrasonic treatment to uniformly blend the mixture to obtain a suspension; then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the suspension, and stirring for 1-2h at room temperature; adding 50mMol/L Tris-HCl buffer solution, uniformly dispersing, stirring at 70-90 ℃ for 22-26h, and drying after the reaction is finished to obtain a product B; and finally, adding a polyethyleneimine solution into the dispersion liquid of the product B, stirring at room temperature for 1-2h for crosslinking, washing a reactant precipitate obtained after the reaction is finished, freeze-drying to obtain a composite membrane material, and preparing the composite membrane material to obtain the MXene/BN @ PDA/PEI composite membrane.
2. The MXene-based anti-swelling composite membrane production process according to claim 1, wherein the step (1) specifically comprises: adding isopropanol into lithium citrate dihydrate solution, and stirring for 5-15min; then adding the h-BN into the mixed solution for uniform dispersion, and carrying out ultrasonic treatment for 1-3h at 150-250W; adding the solution obtained by ultrasonic treatment into a reaction kettle, and reacting for 22-26h at 170-190 ℃ to obtain a product A; and (3) centrifuging the product A, cleaning to remove residual lithium citrate, collecting the obtained precipitate, and drying in a vacuum oven at 35-45 ℃ for 46-50h to obtain the boron nitride nanosheet.
3. The MXene-based anti-swelling composite membrane production process according to claim 1, wherein the step (2) specifically comprises: adding LiF to a hydrochloric acid solution, and subsequently adding Ti to the mixture 3 AlC 2 Powdering, and placing the mixture in a tetrafluoroethylene lining for reaction at 40-50 ℃ for 22-26h; after the reaction, the mixture is centrifuged and washed by deionized water to reach a neutral pH value, and then dried to obtain the titanium carbide nanosheet.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783477A (en) * | 2016-04-10 | 2016-07-20 | 安徽众尚微波科技有限公司 | Box body vacuum microwave drying equipment |
| CN107635649A (en) * | 2015-06-03 | 2018-01-26 | Lg 纳米水公司 | Combination for the chemical addition agent of the water flux that improves film |
| CN111320150A (en) * | 2020-04-17 | 2020-06-23 | 四川大学 | Method for preparing hexagonal boron nitride nanosheets by ion insertion ultrasonic stripping of alkali metal salt |
| CN112808025A (en) * | 2021-01-20 | 2021-05-18 | 重庆工商大学 | MXene membrane preparation method based on ethylenediamine crosslinking regulation and control of interlamellar spacing |
| CN113346054A (en) * | 2021-04-23 | 2021-09-03 | 西交利物浦大学 | Preparation method and application of MXene-carbon nanocage-sulfur composite material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178979B (en) * | 2016-08-31 | 2019-04-09 | 华南理工大学 | High-performance two-dimensional stratiform Ti3C2- MXene film and preparation method thereof and the application in water process |
| CN107029562B (en) * | 2017-05-12 | 2020-04-07 | 大连理工大学 | MXene-based composite nanofiltration membrane and preparation method thereof |
-
2021
- 2021-11-29 CN CN202111437095.XA patent/CN114345135B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107635649A (en) * | 2015-06-03 | 2018-01-26 | Lg 纳米水公司 | Combination for the chemical addition agent of the water flux that improves film |
| CN105783477A (en) * | 2016-04-10 | 2016-07-20 | 安徽众尚微波科技有限公司 | Box body vacuum microwave drying equipment |
| CN111320150A (en) * | 2020-04-17 | 2020-06-23 | 四川大学 | Method for preparing hexagonal boron nitride nanosheets by ion insertion ultrasonic stripping of alkali metal salt |
| CN112808025A (en) * | 2021-01-20 | 2021-05-18 | 重庆工商大学 | MXene membrane preparation method based on ethylenediamine crosslinking regulation and control of interlamellar spacing |
| CN113346054A (en) * | 2021-04-23 | 2021-09-03 | 西交利物浦大学 | Preparation method and application of MXene-carbon nanocage-sulfur composite material |
Non-Patent Citations (1)
| Title |
|---|
| MXene nanosheet stacks with tunable nanochannels for efficient molecular separation;Li Jian et.al;《Chemical Engineering Journal》;20210827;第1-11页 * |
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