CN108145171A - A kind of bismuth alkene nanometer sheet and preparation method thereof - Google Patents
A kind of bismuth alkene nanometer sheet and preparation method thereof Download PDFInfo
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- CN108145171A CN108145171A CN201711429956.3A CN201711429956A CN108145171A CN 108145171 A CN108145171 A CN 108145171A CN 201711429956 A CN201711429956 A CN 201711429956A CN 108145171 A CN108145171 A CN 108145171A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/056—Submicron particles having a size above 100 nm up to 300 nm
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
- B22F1/0551—Flake form nanoparticles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/068—Flake-like particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Abstract
The present invention provides a kind of preparation method of bismuth alkene nanometer sheet, including：(1) by bismuth meal dispersion in organic solvent, dispersion liquid is obtained；(2) first time water bath sonicator first is carried out to the dispersion liquid, obtains the first ultrasonic liquid；Described first ultrasonic liquid is placed in closed container, heating reaction 12 24 hours at being 140 200 DEG C in temperature；After completion of the reaction, it is cooled to room temperature, second of water bath sonicator is carried out to gained reaction solution, obtain the second ultrasonic liquid；(3) to described second, ultrasonic liquid carries out Ultra-Low Speed centrifugation under 2000 4000rpm, collects supernatant, then carries out low-speed centrifugal under 5000 7000rpm to the supernatant, collects precipitation, and gained precipitation is bismuth alkene nanometer sheet.This method easy to operate, favorable reproducibility simple for process, the good bismuth alkene nanometer sheet of the controllable monodispersity of easily obtained size.The present invention also provides bismuth alkene nanometer sheets obtained.
Description
Technical field
The present invention relates to two-dimensional material field, more particularly to a kind of bismuth alkene nanometer sheet and preparation method thereof.
Background technology
Two-dimensional material, refer to electronics only can on the non-nanosize (1-100nm) of two dimensions free movement (plane transport
It is dynamic) material, such as nano thin-film.Univ Manchester UK two scientists An Deliegaimu and Ke Siteyanuowo disappear
Graphene was made with adhesive tape method in 2004 in love for the first time.Hereafter black phosphorus (phosphorus alkene), silene, germanium alkene, antimony alkene, boron nitride, two
A series of quasi- two-dimensional material of only monoatomic layer thickness such as molybdenum sulfide is found in succession.
Bismuth alkene (Bismuthene) is a kind of two-dimensional material removed by bulk metal bismuth, has similar graphene
Structure.But bismuth alkene is the direct band-gap semicondictor (conduction band bottom and valence band at the top of in same position) for having 0.306eV energy gaps, can be with
Light direct-coupling, absorption spectrum ranges are wider.Further, since the biocompatibility of bismuth element is strong, bio-toxicity is small, therefore bismuth alkene exists
Optics, electricity, biologic pharmacological science etc. have wide application potential.And two-dimentional bismuth alkene lamellar structure carries medicine, light in biology
The fields such as heat, optical dynamic therapy are a kind of potential biomedical base materials.
At present, method (such as adhesive tape tears point-score), chemical vapour deposition technique technology are by mechanically pulling off to prepare lamella
Bismuth alkene material.But the yield of sheet bismuth alkene material prepared by mechanical stripping method is relatively low, is not suitable for commercially producing, and operates
It is cumbersome, time-consuming；And the amount of bismuth alkene prepared by chemical vapour deposition technique is less, and is not easy to repeat.
Invention content
In consideration of it, the present invention provides a kind of bismuth alkene nanometer sheet and preparation method thereof, the preparation method is by the way that probe is surpassed
Sound and water bath sonicator are combined, and by the stripping to act synergistically to realize to bismuth meal, obtain that monodispersity is good, bismuth of size uniformity
Alkene nanometer sheet.This method it is simple for process easy to operate, favorable reproducibility, the yield of bismuth alkene nanometer sheet or yield are higher, easily realize low
Cost industrial metaplasia is produced.
In a first aspect, the present invention provides a kind of preparation method of bismuth alkene nanometer sheet, include the following steps：
(1) by bismuth meal dispersion in organic solvent, dispersion liquid is obtained；Wherein, bismuth meal is in a concentration of 0.5- of dispersion liquid
10mg/mL；
(2) first time water bath sonicator first is carried out to the dispersion liquid, obtains the first ultrasonic liquid；The first time water bath sonicator
Power for 400-600W, the time is 1-6 hours；
Described first ultrasonic liquid is placed in closed container, heating reaction 12-24 hours at being 140-200 DEG C in temperature；
After completion of the reaction, it is cooled to room temperature, second of water bath sonicator is carried out to gained reaction solution, obtain the second ultrasonic liquid；
Wherein, the power of second of water bath sonicator is 400-600W；
(3) to described second, ultrasonic liquid carries out Ultra-Low Speed centrifugation under 2000-4000rpm, supernatant is collected, then to institute
It states supernatant and low-speed centrifugal is carried out under 5000-7000rpm, collect precipitation, gained precipitation is bismuth alkene nanometer sheet.
Optionally, it is sub- to include N-Methyl pyrrolidone (NMP), dimethylformamide (DMF), dimethyl for the organic solvent
It is one or more in sulfone (DMSO), acetone, tetrahydrofuran, absolute ethyl alcohol, methanol, isopropanol, chloroform and dichloromethane,
But not limited to this.The surface of organic solvent used can match with the surface of two-dimensional layer bismuth alkene material, exist therebetween
Certain interaction balances the stripping required energy of bismuth meal.
Optionally, the grain size of the bismuth meal is no more than 75 μm.Such as 55-70 μm, 1-50 μm, 2-45 μm or 1-4 μm.Into one
Optionally, the grain size of the bismuth meal is no more than 50 μm to step.
In the embodiment of the present invention, the power of the first time water bath sonicator can be 400W, 450W, 500W, 550W, 580W
Or 600W.Optionally, the power of the first time water bath sonicator is 420-600W.
Optionally, the time of second of water bath sonicator is 1-6 hours.It is further chosen as 1-3 hours.
Wherein, the power of second of water bath sonicator can be 400W, 450W, 500W, 550W, 580W or 600W.It can
Selection of land, the power of second of water bath sonicator is 420-600W.The power of second of water bath sonicator or time can be with
The power of the first time water bath sonicator or time are identical or different.
Optionally, the first time water bath sonicator, second of water bath sonicator are in condition of ice bath of the temperature no more than 10 DEG C
It carries out.Preferably 0-10 DEG C, further preferably 4-10 DEG C.The condition of ice bath, refers in ultrasonic procedure, will be equipped with and wait to surpass
The container of the solution of sound is placed in another container equipped with ice cube (such as beaker, test tube).
Still optionally further, the first time water bath sonicator is to carry out at 5-10 DEG C in temperature.
Still optionally further, second of water bath sonicator is to carry out at 5-10 DEG C in temperature.
Optionally, in step (2), the temperature of the heating reaction is 165-200 DEG C.For example, 170,180,190 or 200
℃。
Optionally, in step (2), the time of the heating reaction is 19-24 hours.For example, 20,22 or 24 hours.
Optionally, in step (2), the closed container is autoclave (such as ptfe autoclave) or three mouthfuls
Bottle.
Further, it is preferable to ground, when the closed container is there-necked flask, also carries out during the heating reaction
Stirring, wherein, the speed of the stirring is 1000-2500 revs/min.
Optionally, in step (3), the centrifugation time of the Ultra-Low Speed centrifugation is 15-30min.For example, 12,15,20,25
Or 30min.
Optionally, the rotating speed of the Ultra-Low Speed centrifugation is 2000-3000rpm.
Optionally, the centrifugation time of the Ultra-Low Speed centrifugation is 15-30min.For example, 12,15,20,25 or 30min.
Optionally, the rotating speed of the low-speed centrifugal is 6000-7000rpm.
The precipitation (i.e. bismuth alkene nanometer sheet) obtained after the low-speed centrifugal can be in redisperse to the second solvent, to obtain bismuth-containing
The solution of alkene nanometer sheet.Optionally, second solvent include N-Methyl pyrrolidone (NMP), dimethylformamide (DMF),
It is one or more in dimethyl sulfoxide (DMSO) (DMSO), acetone, tetrahydrofuran, absolute ethyl alcohol, methanol and isopropanol.
In the present invention, the first time water bath sonicator to bismuth meal dispersion liquid is tentatively to be beaten bismuth meal by ultrasonic Cavitation effect
It is broken, its part is made to dissolve in organic solvent；Next solvent thermal reaction, can by organic solvent under high temperature facing at high temperature
Boundary's state activity further smashes the bismuth meal tentatively smashed in large quantities, removes bismuth alkene into lamellar structure, it is made, which largely to dissolve in, has
In solvent；Bismuth alkene stratified material after stripping can be further broken into smaller particle by second last of water bath sonicator,
Bismuth alkene nanometer sheet is obtained, and is further ensured that and will not reunite, subsequently to carry out centrifugal purification processing.
The preparation method for the bismuth alkene nanometer sheet that first aspect present invention provides, water bath sonicator and solvent-thermal method are combined
Liquid phase stripping method by the stripping to act synergistically to realize to bismuth meal, obtains the bismuth alkene product of different scale, then by centrifuge come
The bismuth alkene nanometer sheet of size needed for acquisition.The method is simple for process easy to operate, and yield is higher, compared to current mechanical stripping method and
Chemical vapour deposition technique etc. has apparent advantage, can obtain the good bismuth alkene nanometer sheet of the controllable monodispersity of size, easily realize low
Cost industrial metaplasia is produced.This lays the foundation for application of the bismuth alkene nanometer sheet in biomedical sector.
Second aspect, the present invention also provides the bismuth alkene nanometer sheets being prepared by above-mentioned preparation method.The bismuth alkene is received
The thickness of rice piece is in 20nm hereinafter, the lateral dimension of the bismuth alkene nanometer sheet is 100nm~10 μm.Wherein, lateral dimension refers to
The length or width of bismuth alkene nanometer sheet.
Optionally, the lateral dimension of the bismuth alkene nanometer sheet is 200nm~10 μm.For example, 300nm, 500nm, 800nm,
1 μm, 2 μm, 5 μm, 8 μm or 10 μm.
Optionally, the lateral dimension of the bismuth alkene nanometer sheet is 500nm~10 μm.
Optionally, the lateral dimension of the bismuth alkene nanometer sheet is 1 μm~10 μm.
Wherein, the bismuth alkene nanometer sheet includes one layer of bismuth alkene or the individual layer bismuth alkene of multilayer repeats on its vertical in-plane
It stacks.
Optionally, the thickness of the bismuth alkene nanometer sheet is 0.3-15nm.
Optionally, the bismuth alkene nanometer sheet is 1~64 atomic layer level thickness.That is, by 1-64 layers individual layer bismuth alkene stack and
Into.Still optionally further, the thickness of the bismuth alkene nanometer sheet is-19.84nm。
Optionally, the bismuth alkene nanometer sheet is that 1~10 layer of bismuth alkene stacks.The thickness of the bismuth alkene nanometer sheet is
0.3-3nm。
Optionally, the shapes such as the shape of the bismuth alkene nanometer sheet is including but not limited to rectangular, round, triangle, polygon.
The shape of bismuth alkene nanometer sheet provided by the invention is more regular, size is more uniform, and preferably, toxicity is smaller for dispersibility,
Convenient for being used to prepare the fields such as optics, electricity, biological medicine (such as preparing photo-thermal therapy drug, optical markings drug).
The advantages of embodiment of the present invention, will partly illustrate in the following description, a part according to specification be it is aobvious and
Implementation being clear to or can be through the embodiment of the present invention and know.
Description of the drawings
Fig. 1 is scanning electron microscope (SEM) photo of bismuth alkene nanometer sheet made from the embodiment of the present invention；
Fig. 2 is the analysis result of the atomic force microscope (AFM) of bismuth alkene nanometer sheet made from the embodiment of the present invention；
Fig. 3 is the Raman spectrogram of bismuth alkene nanometer sheet made from the embodiment of the present invention；
Fig. 4 is ultraviolet-visible-near infrared absorption light of the bismuth alkene nanometer sheet made from the embodiment of the present invention in nmp solvent
Spectrogram.
Specific embodiment
As described below is the preferred embodiment of the embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise of principle of the embodiment of the present invention is not departed from, several improvements and modifications can also be made, these improvement
The protection domain of the embodiment of the present invention is also considered as with retouching.
Divide multiple embodiments that the embodiment of the present invention is further detailed below.The embodiment of the present invention be not limited to
Under specific embodiment.In the range of constant principal right, implementation can be suitably changed.
Embodiment 1
A kind of preparation method of bismuth alkene nanometer sheet, includes the following steps：
(1) the another name for Sichuan Province ox vial of a 250mL capacity is taken, is packed into the nmp solvent of 120mL, adds 200 mesh of 120mg
(200/per square inch namely grain size is 0.074mm) bismuth meal, it is that 1mg/mL (or is to obtain bismuth meal initial concentration
Dispersion liquid 1000ppm)；
(2) vial in (1) is placed in new sesame ultrasonic constant-temperature cleaning machine SBL-22DT, with maximum under 10 DEG C of constant temperature
70% (i.e. with the power of 420W) of power (600W) carries out first time water bath sonicator 3 hours, obtains the first ultrasonic liquid；
After first time water bath sonicator, the ultrasonic liquid of gained first is moved into the reaction kettle that capacity is 150mL and (gives Shen in Shanghai
Instrument Ltd.), it is heated to 140 DEG C and is kept for 24 hours；
After completion of the reaction, it is cooled to room temperature, all substances in reaction kettle is all moved into 250mL another name for Sichuan Province ox vial, then
It is small with 70% power, second of water bath sonicator 4 of progress under 10 DEG C of constant temperature using new sesame ultrasonic constant-temperature cleaning machine SBL-22DT
When, obtain the second ultrasonic liquid；
(3) to described second, ultrasonic liquid is equally divided into 4 parts, moves into 50mL centrifuge tubes, is existed using He Xi HR20MW centrifuges
(5000g centrifugal force) carries out centrifugation 20 minutes under 3000rpm rotating speeds, and gained supernatant is moved into 4 new 50mL respectively centrifuges
Guan Zhong, (11667g centrifugal force) carries out centrifugation 20 minutes under 7000rpm rotating speeds, is precipitated in collecting pipe, as required bismuth
Alkene nanometer sheet (about 71.4mg).
It is computed to obtain, in the embodiment of the present invention 1, the yield of the bismuth alkene nanometer sheet is 71.4mg/120mg=
59.5%.
Embodiment 2
A kind of preparation method of bismuth alkene nanometer sheet, includes the following steps：
(1) the another name for Sichuan Province ox vial of a 500mL capacity is taken, is packed into the nmp solvent of 400mL, adds 300 mesh of 200mg
Bismuth meal obtains the dispersion liquid that bismuth meal initial concentration is 0.5mg/mL；
(2) vial in (1) is placed in new sesame ultrasonic constant-temperature cleaning machine SBL-22DT, with 480W under 4 DEG C of constant temperature
Power carry out first time water bath sonicator 2 hours, obtain the first ultrasonic liquid；
After first time water bath sonicator, the ultrasonic liquid of gained first is moved into the reaction kettle that capacity is 150mL and (gives Shen in Shanghai
Instrument Ltd.), it is heated to 140 DEG C and is kept for 24 hours；
After completion of the reaction, it is cooled to room temperature, all substances in reaction kettle is all moved into 250mL another name for Sichuan Province ox vial, use
New sesame ultrasonic constant-temperature cleaning machine SBL-22DT with power second of the progress water bath sonicator 3 hours of 450W, obtains the second ultrasound
Liquid；
(3) to described second, ultrasonic liquid is equally divided into 4 parts, moves into 50mL centrifuge tubes, is existed using He Xi HR20MW centrifuges
It is centrifuged 30 minutes under 2000rpm rotating speeds, gained supernatant is moved into respectively in 4 new 50mL centrifuge tubes, turned then at 6500rpm
The lower centrifugation of speed 25 minutes, collecting pipe is interior to be precipitated, as required bismuth alkene nanometer sheet (yield 65%).
Fig. 1 is scanning electron microscope (SEM) photo of bismuth alkene nanometer sheet made from the embodiment of the present invention.It can from Fig. 1
Find out there are a large amount of apparent flaky substances, i.e. bismuth alkene nanometer sheet in figure.Visible apparent layer structure is seen in amplification, and explanation is adopted
Required bismuth alkene nanometer sheet can be stripped out with the preparation method of the present invention.The lateral dimension of the bismuth alkene nanometer sheet 100nm~
10 μm, by one or more layers individual layer bismuth alkene, repeatedly stacking forms stratiform feather spline structure on its vertical in-plane.It is formed
The thickness of the bismuth alkene nanometer sheet be-19.84nm。
Fig. 2 is the analysis result of the atomic force microscope (AFM) of bismuth alkene nanometer sheet made from the embodiment of the present invention.Figure memory
In the laminated structure that a large amount of thickness are 3-4nm (Δ Z), illustrate that preparation method provided by the invention can be removed successfully to form bismuth alkene and receive
Rice piece, the bismuth alkene nanometer agreement that contracts a film or TV play to an actor or actress are stacked by 10-13 layers of individual layer bismuth alkene, that is, the bismuth alkene nanometer sheet is former for 10-13 bismuth
Molecular layers thick.
Fig. 3 is the Raman curve graph of bismuth alkene nanometer sheet made from the embodiment of the present invention.Under the excitation wavelength of 1064nm,
70cm-1And 97cm-1(correspond respectively to the E of Bi elementsgAnd A1gVibrating mould) the two characteristic peaks are all more apparent, and this illustrates this
The peelable formation bismuth alkene nanometer sheet of the preparation method provided is provided.
Fig. 4 is ultraviolet-visible-near infrared absorption light of the bismuth alkene nanometer sheet made from the embodiment of the present invention in nmp solvent
Spectrogram.From fig. 4, it can be seen that bismuth alkene nanometer sheet provided by the invention shows apparent absorption characteristic in 300-1100 nm regions.
For prominent beneficial effects of the present invention, present invention is alternatively directed to embodiments 1 to set following comparative example：
Comparative example 1 and embodiment 1 difference lies in：In step (2), Probe Ultrasonic Searching is carried out only with than bright cell crushing instrument
24 hours；
Comparative example 2 and embodiment 1 difference lies in：It is first super using probe is carried out than bright cell crushing instrument in step (2)
Sound, then carry out water bath sonicator；
Comparative example 3 and embodiment 1 difference lies in：In step (2), water bath sonicator is first carried out, then carry out probe type ultrasonic,
Without Secondary water-bath ultrasound is carried out after probe type ultrasonic again again.
Product made from comparative example 1 is compared with the bismuth alkene nanometer sheet of embodiment 1, and lateral dimension is mainly at 1 μm or more, bismuth
The yield of alkene nanometer sheet is 62.5mg/120mg=52.8%.
Compared with Example 1, the yield of the bismuth alkene nanometer sheet is 66.2mg/120mg=to product made from comparative example 2
55.1%.Also contain nanometer sheet of many lateral dimensions at 1 μm or more.
Compared with Example 1, the yield of the bismuth alkene nanometer sheet is 65.5mg/120mg=to product made from comparative example 3
54.8%.And the product of comparative example 3 is disperseing in organic solvent, micro agglomeration to be had after standing 6 hours.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of bismuth alkene nanometer sheet, which is characterized in that include the following steps：
(1) by bismuth meal dispersion in organic solvent, dispersion liquid is obtained；Wherein, bismuth meal is in a concentration of 0.5-10mg/ of dispersion liquid
mL；
(2) first time water bath sonicator first is carried out to the dispersion liquid, obtains the first ultrasonic liquid；The work(of the first time water bath sonicator
Rate is 400-600W, and the time is 1-6 hours；
Described first ultrasonic liquid is placed in closed container, heating reaction 12-24 hours at being 140-200 DEG C in temperature；
After completion of the reaction, it is cooled to room temperature, second of water bath sonicator is carried out to gained reaction solution, obtain the second ultrasonic liquid；Wherein,
The power of second of water bath sonicator is 400-600W；
(3) to described second, ultrasonic liquid carries out Ultra-Low Speed centrifugation under 2000-4000rpm, collection supernatant, then on described
Clear liquid carries out low-speed centrifugal under 5000-7000rpm, collects precipitation, and gained precipitation is bismuth alkene nanometer sheet.
2. preparation method as described in claim 1, which is characterized in that the grain size of the bismuth meal is no more than 75 μm.
3. preparation method as described in claim 1, which is characterized in that the organic solvent includes N-Methyl pyrrolidone, two
In methylformamide, dimethyl sulfoxide (DMSO), acetone, tetrahydrofuran, absolute ethyl alcohol, methanol, isopropanol, chloroform and dichloromethane
It is one or more.
4. preparation method as described in claim 1, which is characterized in that the temperature of the heating reaction is 165-200 DEG C；It is described
The time of heating reaction is 19-24 hours.
5. preparation method as described in claim 1, which is characterized in that the power of second of water bath sonicator is 400-
600W；The time of second of water bath sonicator is 1-3 hours.
6. preparation method as described in claim 1, which is characterized in that the first time water bath sonicator be temperature be 5-10 DEG C
Lower progress；Second of water bath sonicator is to carry out at 5-10 DEG C in temperature.
7. preparation method as described in claim 1, which is characterized in that the rotating speed of the Ultra-Low Speed centrifugation is 2000-
3000rpm；The rotating speed of the low-speed centrifugal is 6000-7000rpm.
It is 8. a kind of such as claim 1-7 any one of them bismuth alkene nanometer sheets, which is characterized in that the thickness of the bismuth alkene nanometer sheet
In 20nm hereinafter, the lateral dimension of the bismuth alkene nanometer sheet is 100nm~10 μm.
9. bismuth alkene nanometer sheet as claimed in claim 8, which is characterized in that the lateral dimension of the bismuth alkene nanometer sheet is 200nm
~10 μm；The thickness of the bismuth alkene nanometer sheet is 0.3-15nm.
10. bismuth alkene nanometer sheet as claimed in claim 8, which is characterized in that the bismuth alkene nanometer sheet includes 1-64 layers of individual layer
Bismuth alkene stacks.
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| CN201711429956.3A CN108145171B (en) | 2017-12-26 | 2017-12-26 | Bismuth-alkene nanosheet and preparation method thereof |
| PCT/CN2018/099563 WO2019128245A1 (en) | 2017-12-26 | 2018-08-09 | Bismuthene nanosheet and preparation method therefor |
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| CN201711429956.3A CN108145171B (en) | 2017-12-26 | 2017-12-26 | Bismuth-alkene nanosheet and preparation method thereof |
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| CN108145171B CN108145171B (en) | 2020-11-27 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128245A1 (en) * | 2017-12-26 | 2019-07-04 | 深圳大学 | Bismuthene nanosheet and preparation method therefor |
| WO2019128244A1 (en) * | 2017-12-26 | 2019-07-04 | 深圳大学 | Method for preparing bismuth quantum dot and bismuth quantum dot |
| CN111653672A (en) * | 2020-06-15 | 2020-09-11 | 安徽大学 | Lattice-matched heterojunction composite film, preparation method and perovskite solar cell |
| CN111790904A (en) * | 2020-05-25 | 2020-10-20 | 南京理工大学 | Method for preparing bismuth-alkene nanosheets by liquid-phase laser irradiation method |
| CN112792350A (en) * | 2019-10-25 | 2021-05-14 | 中国科学院福建物质结构研究所 | Antimony and/or bismuth nanosheet, stibene and/or bislimonene and preparation method and application thereof |
| CN112846199A (en) * | 2021-01-08 | 2021-05-28 | 新乡医学院 | Method for preparing ultrathin bismuth-alkene nanosheets by heating, freezing, grinding and ultrasonic |
| CN113333736A (en) * | 2021-05-10 | 2021-09-03 | 武汉理工大学 | Microwave stripping-based stibene and preparation method thereof |
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| CN113817927A (en) * | 2021-10-09 | 2021-12-21 | 中南大学 | Method for efficiently preparing arsenic-alkene nanosheets |
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| CN114990358A (en) * | 2022-04-12 | 2022-09-02 | 中南大学 | Arsenic-doped alkene nanosheet, and preparation method and application thereof |
| CN114990358B (en) * | 2022-04-12 | 2023-02-03 | 中南大学 | Arsenic-doped alkene nanosheet, and preparation method and application thereof |
| CN116984623A (en) * | 2023-09-26 | 2023-11-03 | 之江实验室 | Two-dimensional bismuth nanocrystal synthesis method based on sectional hydrothermal method |
| CN116984623B (en) * | 2023-09-26 | 2024-02-09 | 之江实验室 | Two-dimensional bismuth nanocrystal synthesis method based on sectional hydrothermal method |
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