CN106178979A - High-performance two-dimensional stratiform Ti3c2mXene film and preparation method thereof and the application in water process - Google Patents
High-performance two-dimensional stratiform Ti3c2mXene film and preparation method thereof and the application in water process Download PDFInfo
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- CN106178979A CN106178979A CN201610797601.9A CN201610797601A CN106178979A CN 106178979 A CN106178979 A CN 106178979A CN 201610797601 A CN201610797601 A CN 201610797601A CN 106178979 A CN106178979 A CN 106178979A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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Abstract
The invention belongs to the technical field of film preparation and Water warfare, disclose high-performance two-dimensional stratiform Ti3C2MXene film and preparation method thereof and the application in water process.Described method is: (1) is by Ti3AlC2Powder mixes with HF solution, stirring reaction, and centrifuge washing is dried, obtains Ti3C2Powder；(2) by Ti3C2Powder mixes with solvent, stir process, washing, is dried, the powder after being processed；(3) powder after processing dissolves in a solvent, and supersound process is centrifugal, takes supernatant, is dried, obtains two-dimensional nano sheet；(4) by nanometer sheet wiring solution-forming, by nanoassemble technology, deposit on perforated substrate, be dried, obtain high-performance two-dimensional stratiform Ti3C2MXene film.The film of the present invention has the water flux of superelevation, higher selectivity, good mechanical performance and stability；Described method is simple, energy consumption is low, low cost, repeatability are high, the suitability is wide.
Description
Technical field
The invention belongs to the technical field of film preparation and Water warfare, relate to a kind of two-dimensional material, be specifically related to a kind of high
Performance two-dimensional layer Ti3C2-MXene film and preparation method thereof and the application in water process.
Background technology
Water is the earth all life basis for the survival.The high speed development of industrial economy, brings huge progress to society,
Bring a series of serious problem simultaneously.In great number of issues, it is particularly problematic that water pollutes.Especially this people of China
All water resource is less than the country of world average level, and using water wisely and the purified treatment to sewage have extremely important strategy meaning
Justice, realizing sustainable development simultaneously for the mankind has important realistic meaning.
In existing water technology, relative to conventional separation techniques, owing to membrane separation technique has high separating efficiency,
Low energy consumption and low cost and increasingly paid close attention to by people, and apply more and more extensive.But, traditional organic polymer
Thing film due to cost advantage Application comparison extensive, but there is resistance to corrosion difference and the problem of bad mechanical property.Ceramic membrane
Although corrosion-resistant, mechanical strength is high, but cost is the highest, significantly limit its application.
It is high that the most emerging two-dimensional films has mechanical strength, and heat stability and chemical stability are excellent, simple to operate
The features such as controllability is good, have been increasingly becoming the study hotspot of scientist.Meanwhile, research shows, the separating property of two-dimensional films wants remote
Higher than conventional film.At present, two-dimensional films material mainly has graphene/graphene oxide material and the big class of class grapheme material two.Its
Middle two-dimensional graphene/graphene oxide membrane Recent study is very extensive, but its shortcoming is also it will be apparent that mainly include preparation
The cost of process is high, unstable poor with contamination resistance in aqueous.
The membrane material how preparing a kind of low cost, high water flux height selectivity and separation efficiency high has been increasingly becoming people
The emphasis studied.
Summary of the invention
In order to overcome the shortcoming and defect of prior art, the primary and foremost purpose of the present invention is to provide a kind of high-performance two-dimensional layer
Shape Ti3C2The preparation method of-MXene film.Described high-performance two-dimensional stratiform Ti3C2-MXene film can stable existence in aqueous.
Another object of the present invention is to provide high-performance two-dimensional stratiform Ti prepared by said method3C2-MXene
Film.Described two-dimensional layer Ti3C2-MXene film has high water flux and high selectivity.
It is still another object of the present invention to provide above-mentioned high-performance two-dimensional stratiform Ti3C2The application of-MXene film.Described high property
Can two-dimensional layer Ti3C2-MXene film is used for purifying water process.
The object of the invention is achieved through the following technical solutions:
A kind of high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, comprises the following steps:
(1) by Ti3AlC2Powder mixes with HF solution, stirring reaction, and centrifuge washing is dried, obtains Ti3C2Powder；
(2) by Ti3C2Powder mixes with solvent, stir process, washing, is dried, the Ti after being processed3C2Powder；
(3) Ti after processing3C2Powder dissolves in a solvent, supersound process, centrifugal, takes supernatant, is dried, obtains two
Dimension Ti3C2-MXene nanometer sheet；
(4) by two dimension Ti3C2-MXene nanometer sheet wiring solution-forming, obtains two dimension Ti3C2-MXene nanometer sheet solution；Again will
Two dimension Ti3C2-MXene nanometer sheet solution passes through nanoassemble technology, deposits on perforated substrate, is dried, obtains high-performance two
Dimension stratiform Ti3C2-MXene film.
Ti described in step (1)3AlC2Powder is 1g:(2～20 with the mass volume ratio of HF solution) mL.
Described in step (1), the volumetric concentration of HF solution is 10%～40%.
The condition of stirring described in step (1) is to stir 2～12 hours under room temperature.
Described in step (1), the rotating speed of stirring is 100～500rpm；Described centrifugal rotating speed is 1000～8000rpm；Institute
State washing to refer to use deionized water wash.
Described in step (1), the number of times of washing is 1～3 time；Described dry condition is 30～120 DEG C and is dried 5～24 little
Time.
Solvent described in step (2) be in dimethyl sulfoxide, hydrazine hydrate or DMF more than one.
Ti described in step (2)3AlC2Powder is 1g:(2～30 with the mass volume ratio of solvent) mL；
The time of stir process described in step (2) is 2～48h；
Described in step (2), the rotating speed of stirring is 100～500rpm；The number of times of described washing is 5～10 times；Described washing
Refer to use deionized water wash；Described dry condition is 60～200 DEG C and is dried 10～48 hours.
Ti after processing described in step (3)3C2Powder is (1～5) g:(50～1000 with the mass volume ratio of solvent)
mL；Described ultrasonic time is 2～24h, and described centrifugal condition is for be centrifuged 10～40min with 5000～10000rpm.
Solvent described in step (3) be in water, isopropanol, propanol, methanol more than one；Be preferably water and propanol or water and
The mixture of methanol.
Step is dried as lyophilization described in (3).
Two dimension Ti described in step (4)3C2Solvent in-MXene nanometer sheet solution is in water, methanol, ethanol or isopropanol
More than one；Described two dimension Ti3C2The concentration of-MXene nanometer sheet solution is 0.1～2mg/mL.
Nanoassemble technology described in step (4) is rubbing method, sucking filtration, seasoning or knife coating.
Perforated substrate described in step (4) is anodised aluminium filter membrane, mixed cellulose ester membrane, polypropylene screen or polyethers
Sulfone film.
Described in step (4), the aperture of perforated substrate is 100～450nm.
Described perforated substrate preferably aperture is the anodised aluminium filter membrane of 0.2 μm.
It is dried as natural drying, forced air drying, vacuum drying or desiccant dryness described in step (4).
Air blast or vacuum drying condition described in step (4) are to be dried 5～48 hours at 35～200 DEG C.
Described high-performance two-dimensional stratiform Ti3C2-MXene film is prepared by said method.
Described high-performance two-dimensional stratiform Ti3C2The application in the processing water of-MXene film, comprises the following steps:
The Ti of substrate will be supported on3C2-MXene film is put in water treatment facilities, under pressure, separates in water
The nanometer impurity of different-grain diameter.
The nanometer impurity of different-grain diameter used is tetramethyl pyridine base porphyrin, Azo-Blue, nano-Au solution.Nanometer is miscellaneous
Plasmid is tetramethyl pyridine base porphyrin (TMPyP) of a diameter of 2nm, the Azo-Blue (EB) of a diameter of 3nm, a diameter of 5nm
Nano-Au solution.
The present invention is by the Ti by two dimension3C2(MXene) nanometer sheet assembles, and has prepared high water flux height selectivity
Two-dimensional layer Ti3C2-MXene ultrafilter membrane, the water flux of obtained ultrafilter membrane is more than 10 times of graphene oxide membrane, simultaneously
Selectivity is similar to graphene oxide membrane.
Two-dimensional layer Ti prepared by the present invention3C2-MXene film and preparation method thereof has the following characteristics that
(1) when this film is for processing the ion of about 3nm, there is the water flux of superelevation and higher selectivity, separate
Efficiency is high, has good application prospect in ultrafilter membrane；
(2) this film satisfactory mechanical property, energy stable existence in water, acid and alkali-resistance, contamination resistance is strong, repeatable utilization time
Number height；
(3) preparation process is simple, energy consumption is low, needed raw material is few, low cost, repeatability are high, the suitability is extensive, are suitable for work
Industry metaplasia is produced.
Accompanying drawing explanation
Fig. 1 is the two-dimentional Ti that embodiment 2 prepares3C2(MXene) atomic force microscopy (AFM) figure of nanometer sheet；
Fig. 2 is the two-dimensional layer Ti that embodiment 4 prepares3C2-MXene film is supported on the surface scan of anodised aluminium filter membrane
Electron microscope picture；
Fig. 3 is the two-dimensional layer Ti that embodiment 4 prepares3C2-MXene film is supported on the cross section of anodised aluminium filter membrane and sweeps
Retouch electron microscope picture.
Detailed description of the invention
Below in conjunction with some embodiments the step of the present invention made further details of elaboration, but embodiments of the present invention
It is not only restricted to the specific embodiment of act set forth below, also includes the combination in any between embodiment.
Embodiment 1
A kind of high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, comprises the following steps:
(1) by 10g Ti3AlC2Powder mixes with 30mL HF solution (volumetric concentration of HF solution is 20%), stirs under room temperature
Mixing 2 hours (rotating speed is 500rpm), then use deionized water centrifuge washing 3 times, 100 DEG C are dried 12 hours, obtain Ti3C2Powder；
(2) by 1gTi3C2Powder mixes with 5mL dimethyl sulfoxide, stirs 2 hours (rotating speed is 200rpm), add under room temperature
Ionized water washs 3 times, and 100 DEG C are dried 12 hours, the Ti after being processed3C2Powder；
(3) Ti after 1g processes is taken3C2Powder is dissolved in 60mL methanol and 140mL water mixed solution, and ultrasonic 2 hours (super
Acoustical power is 400W), 8000rpm is centrifuged 20min, takes supernatant, lyophilization, obtains two dimension Ti3C2(MXene) nanometer sheet；
(4) by 500mg two dimension Ti3C2(MXene) during nanometer sheet is dissolved in 1000mL water, wiring solution-forming, (it is coated with by rubbing method
The tool condition of cloth method is room temperature, and rotating speed is 80rpm), make two dimension Ti3C2(MXene) nanometer sheet loads to pore size uniformly and is
On the mixed cellulose ester perforated substrate of 0.2 μm, obtain asymmetrical Ti3C2-MXene stratiform two-dimensional films；
(5) by the above-mentioned Ti being carried on mixed cellulose ester substrate3C2-MXene stratiform two-dimensional films is dried the (temperature being dried
Degree is 70 DEG C, and the time is 5h), remove remaining solvent, obtain high performance asymmetrical two-dimensional layer Ti3C2-MXene film.
The high performance asymmetrical two-dimensional layer Ti of the present embodiment3C2-MXene film application in water purification: by above-mentioned
The high performance asymmetrical two-dimensional layer Ti being carried on mixed cellulose ester substrate3C2-MXene film puts into membrane separation device
In, feed side adds containing the azovan blue aqueous solution (concentration is 20mg/mL) that particle diameter is 3nm.Result is: this two-dimensional layer
Ti3C2-MXene film is 98% to the rejection of the azovan blue of 3nm, and water flux is 900L/m-2h-1bar-1.Described two-dimensional layer
Ti3C2-MXene film stable existence 2 months as long as in water, simultaneously recycling more than 10 times.
Embodiment 2
A kind of high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, comprises the following steps:
(1) by 6g Ti3AlC2Powder mixes with 85mL HF solution (volumetric concentration of HF solution is 10%), stirs under room temperature
Mixing 4 hours (rotating speed is 200rpm), then use deionized water centrifuge washing 2 times, 50 DEG C are dried 24 hours, obtain Ti3C2Powder；
(2) by 5g Ti3C2Powder mixes with 20mL dimethyl sulfoxide, stirs 10 hours (rotating speed is 300rpm) under room temperature,
Being washed with deionized 3 times, 80 DEG C are dried 16 hours, the Ti after being processed3C2Powder；
(3) Ti after 2g processes is taken3C2Powder is dissolved in the mixed solution of 100mL methanol and 300mL water, ultrasonic 4 hours
(ultrasonic power is 300W), centrifugal (8000rpm is centrifuged 20min), take supernatant, lyophilization, obtain two dimension Ti3C2(MXene)
Nanometer sheet, its structural characterization is as shown in Figure 1.
(4) by 200mg two dimension Ti3C2(MXene), during nanometer sheet is dissolved in 200mL water, wiring solution-forming, by rubbing method (coating
The process conditions of method are room temperature, and rotating speed is 100rpm), make two dimension Ti3C2(MXene) nanometer sheet loads to pore size uniformly
It is on the Merlon perforated substrate of 0.2 μm, obtains asymmetrical Ti3C2-MXene stratiform two-dimensional films；
(5) by the above-mentioned Ti being carried on polycarbonate substrate3C2-MXene film is dried (desiccant is silica gel), removes residual
Remaining solvent, obtains the Ti of high performance asymmetric two-dimensional layer3C2-MXene film.
The high performance asymmetrical two-dimensional layer Ti of the present embodiment3C2-MXene film application in water purification: by above-mentioned
The high performance asymmetrical two-dimensional layer Ti being carried on polycarbonate substrate3C2-MXene film is put in membrane separation device, enters
Material side adds containing the TMPyP aqueous solution (concentration is 5mg/mL) that particle diameter is 2nm.Result is: this Ti3C2-MXene film is to 2nm's
The rejection of TMPyP is 90%, and water flux is 800L/m-2h-1bar-1.Described high performance asymmetrical two-dimensional layer Ti3C2-
MXene film stable existence 1 month as long as in water, the most repeatable utilizes more than 10 times.
Fig. 1 is the two-dimentional Ti that embodiment 2 prepares3C2(MXene) atomic force microscopy (AFM) figure of nanometer sheet；Prepared receives
The thickness of rice sheet is about 2nm.
Embodiment 3
A kind of high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, comprises the following steps:
(1) by 8gTi3AlC2Powder mixes with 80mLHF solution (volumetric concentration of HF solution is 40%), stirs 8 under room temperature
Hour (rotating speed is 200rpm), then with deionized water centrifuge washing 3 times, 100 DEG C are dried 24 hours, obtain Ti3C2Powder；
(2) by 2gTi3C2Powder mixes with 10mL dimethyl sulfoxide, stirs 36 hours (rotating speed is 300rpm), add under room temperature
Deionized water wash 3 times, 60 DEG C are dried 24 hours, the Ti after being processed3C2Powder；
(3) Ti after 1g processes is taken3C2Powder is dissolved in the mixed solution of 50mL methanol and 200mL water, ultrasonic 8 hours
(ultrasonic power is 300W), centrifugal, take supernatant, lyophilization, obtain two dimension Ti3C2(MXene) nanometer sheet；
(4) by 100mg two dimension Ti3C2(MXene), during nanometer sheet is dissolved in 500mL water, wiring solution-forming, by rubbing method (coating
The process conditions of method are room temperature, and rotating speed is 200rpm), make two dimension Ti3C2(MXene) nanometer sheet loads to pore size uniformly
It is on the polyether sulfone perforated substrate of 0.2 μm, obtains asymmetrical Ti3C2-MXene stratiform two-dimensional films；
(5) by the above-mentioned Ti being carried on polyether sulfone substrate3C2-MXene stratiform two-dimensional films is dried that (desiccant is silica gel
Grain), remove remaining solvent, obtain high performance asymmetrical two-dimensional layer Ti3C2-MXene film.
The high performance asymmetrical two-dimensional layer Ti of the present embodiment3C2-MXene film application in water purification: by above-mentioned
The high performance asymmetrical two-dimensional layer Ti being carried on polyether sulfone substrate3C2-MXene film is put in membrane separation device, charging
Side adds containing the nanometer gold aqueous solution (concentration is 500ppm) that particle diameter is 5nm, and experiment finds, this Ti3C2-MXene film is to 5nm
The rejection of nanometer gold be 99%, water flux is 950L/m-2h-1bar-1。
Embodiment 4
A kind of high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, comprises the following steps:
(1) by 20gTi3AlC2Powder puts in plastic beaker that (volumetric concentration of HF solution is with 200mL HF solution
20%) mixing, stirs 12 hours (rotating speed is 500rpm), then uses deionized water centrifuge washing 3 times under room temperature, 100 DEG C are dried
12 hours, obtain Ti3C2Powder；
(2) by 10gTi3C2Powder mixes with 100mL dimethyl sulfoxide, stirs 2 hours (rotating speed is 300rpm) under room temperature,
Adding deionized water wash 3 times, 100 DEG C are dried 48 hours, the Ti after being processed3C2Powder；
(3) Ti after 5g processes is taken3C2Powder is dissolved in the mixed solution of 200mL methanol and 800mL water, ultrasonic 12 little
Time (ultrasonic power is 300W), centrifugal, take supernatant, lyophilization, obtain two dimension Ti3C2(MXene) nanometer sheet；
(4) by 1g two dimension Ti3C2(MXene), during nanometer sheet is dissolved in 1000mL water, wiring solution-forming, by rubbing method (rubbing method
Process conditions be room temperature, rotating speed is 80rpm), make two dimension Ti3C2(MXene) nanometer sheet loads to pore size uniformly and is
On the anodised aluminium perforated substrate of 0.2 μm, obtain asymmetrical Ti3C2-MXene stratiform two-dimensional films；
(5) by the above-mentioned Ti being carried on anodic oxidation aluminium substrate3C2-MXene stratiform two-dimensional films is put into exsiccator and is dried
(condition being dried is 100 DEG C of dry 5h), removes remaining solvent, obtains high performance asymmetrical two-dimensional layer Ti3C2-
MXene film.
The high performance asymmetrical two-dimensional layer Ti of the present embodiment3C2-MXene film application in water purification: by above-mentioned
The high performance asymmetrical two-dimensional layer Ti being carried on anodic oxidation aluminium substrate3C2-MXene film is put in membrane separation device,
Feed side adds containing the azovan blue aqueous solution (concentration is 5mg/mL) that particle diameter is 3nm.Result is: this Ti3C2-MXene film pair
The rejection of the azovan blue of 3nm is 98%, and water flux is 900L/m-2h-1bar-1。Ti3C2-MXene film stable existence in water
1.5 months as long as, the most repeatable utilize more than 15 times
Fig. 2 is the two-dimensional layer Ti that embodiment 4 prepares3C2-MXene film is supported on the surface scan of anodised aluminium filter membrane
Electron microscope picture；
Fig. 3 is the two-dimensional layer Ti that embodiment 4 prepares3C2-MXene film is supported on the cross section of anodised aluminium filter membrane and sweeps
Retouching electron microscope picture, its thickness is about 500nm.
Comparative example 1
Being fixed in water treatment facilities by business-like ultrafiltration mixed cellulose ester membrane, process particle diameter is 2nm, and concentration is
The TMPyP aqueous solution of 10mg/L, its water permeable ability 15L/m-2h-1bar-1, the rejection to TMPyP is 85%.
Comparative example 2
Being fixed in water treatment facilities by business-like ultrafiltration polycarbonate membrane, process particle diameter is 2nm, and concentration is 10mg/L
TMPyP aqueous solution, its water permeable ability 20L/m-2h-1bar-1, the rejection to TMPyP is 60%.
Comparative example 3
Being fixed in water treatment facilities by business-like ultrafiltration poly (ether sulfone) film, process particle diameter is 2nm, and concentration is 10mg/L's
TMPyP aqueous solution, its water permeable ability 12L/m-2h-1bar-1, the rejection to TMPyP is 80%.
Above-described embodiment is preferrred embodiment of the present invention, but the technology implementation mode of the present invention is not by above-mentioned enforcement
The restriction of mode, the simplification made under other any principle without departing from the present invention and spirit, change, substitute, modify,
Combination, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. high-performance two-dimensional stratiform Ti3C2The preparation method of-MXene film, it is characterised in that: comprise the following steps:
(1) by Ti3AlC2Powder mixes with HF solution, stirring reaction, and centrifuge washing is dried, obtains Ti3C2Powder；
(2) by Ti3C2Powder mixes with solvent, stir process, washing, is dried, the Ti after being processed3C2Powder；
(3) Ti after processing3C2Powder dissolves in a solvent, supersound process, centrifugal, takes supernatant, is dried, obtains two dimension
Ti3C2-MXene nanometer sheet；
(4) by two dimension Ti3C2-MXene nanometer sheet wiring solution-forming, obtains two dimension Ti3C2-MXene nanometer sheet solution；Again by two dimension
Ti3C2-MXene nanometer sheet solution passes through nanoassemble technology, deposits on perforated substrate, is dried, obtains high-performance two-dimensional layer
Shape Ti3C2-MXene film.
High-performance two-dimensional stratiform Ti the most according to claim 13C2The preparation method of-MXene film, it is characterised in that: step
(3) Ti after processing described in3C2Powder is (1～5) g:(50～1000 with the mass volume ratio of solvent) mL；
Solvent described in step (3) be in water, isopropanol, propanol, methanol more than one；Described in step (3), ultrasonic time is 2
～24h.
High-performance two-dimensional stratiform Ti the most according to claim 23C2The preparation method of-MXene film, it is characterised in that: step
(3) solvent described in is water and propanol or water and the mixture of methanol.
High-performance two-dimensional stratiform Ti the most according to claim 13C2The preparation method of-MXene film, it is characterised in that: step
(1) Ti described in3AlC2Powder is 1g:(2～20 with the mass volume ratio of HF solution) mL；
Described in step (1), the volumetric concentration of HF solution is 10%～40%；
The condition of stirring described in step (1) is to stir 2～12 hours under room temperature.
High-performance two-dimensional stratiform Ti the most according to claim 13C2The preparation method of-MXene film, it is characterised in that: step
(2) solvent described in be in dimethyl sulfoxide, hydrazine hydrate or DMF more than one；
Ti described in step (2)3AlC2Powder is 1g:(2～30 with the mass volume ratio of solvent) mL；
The time of stir process described in step (2) is 2～48h；
Two dimension Ti described in step (4)3C2Solvent in-MXene nanometer sheet solution is a kind of in water, methanol, ethanol or isopropanol
Above；
Two dimension Ti described in step (4)3C2The concentration of-MXene nanometer sheet solution is 0.1～2mg/mL.
High-performance two-dimensional stratiform Ti the most according to claim 13C2The preparation method of-MXene film, it is characterised in that: step
(4) the nanoassemble technology described in is rubbing method, sucking filtration, seasoning or knife coating；
Perforated substrate described in step (4) is anodised aluminium filter membrane, mixed cellulose ester membrane, polypropylene screen or polyether sulfone
Film；
Described in step (4), the aperture of perforated substrate is 100～450nm.
High-performance two-dimensional stratiform Ti the most according to claim 13C2The preparation method of-MXene film, it is characterised in that: step
(1) described in, the rotating speed of stirring is 100～500rpm；Described centrifugal rotating speed is 1000～8000rpm；Described washing refers to adopt
It is washed with deionized；
Described in step (1), the number of times of washing is 1～3 time；Described dry condition is 30～120 DEG C and is dried 5～24 hours；
Described in step (2), the rotating speed of stirring is 100～500rpm；The number of times of described washing is 5～10 times；Described washing refers to
Use deionized water wash；Described dry condition is 60～200 DEG C and is dried 10～48 hours；
Described in step (3), centrifugal condition is for be centrifuged 10～40min with 5000～10000rpm；It is dried described in step (3) and is
Lyophilization；
Described in step (4), drying means is natural drying, forced air drying, vacuum drying or desiccant dryness.
8. high-performance two-dimensional stratiform Ti prepared by method described in any one of claim 1～73C2-MXene film.
High-performance two-dimensional stratiform Ti the most according to claim 83C2The application in the processing water of-MXene film, it is characterised in that
Comprise the following steps:
The Ti of substrate will be supported on3C2-MXene film is put in water treatment facilities, the nanometer impurity of the different-grain diameter in separation water.
Application the most according to claim 9, it is characterised in that: described nanometer impurity is tetramethyl pyridine base porphyrin, Yi Wen
Family name's indigo plant and/or nano-Au solution.
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