CN106745272A - A kind of preparation method of individual layer or few layer tungsten disulfide nano slices - Google Patents
A kind of preparation method of individual layer or few layer tungsten disulfide nano slices Download PDFInfo
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- CN106745272A CN106745272A CN201710105545.2A CN201710105545A CN106745272A CN 106745272 A CN106745272 A CN 106745272A CN 201710105545 A CN201710105545 A CN 201710105545A CN 106745272 A CN106745272 A CN 106745272A
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- layer
- individual layer
- tungsten disulfide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
Abstract
The invention discloses a kind of individual layer or the preparation method of few layer tungsten disulfide nano slices, belong to the synthesis technical field of visible light catalytic material.Technical scheme main points are：The preparation method of a kind of individual layer or few layer tungsten disulfide nano slices, concretely comprises the following steps：By WS2Powder is dissolved in the mixed solution of ethanol and deionized water, makes WS2Concentration be 8mg/mL, ultrasonic wave added peels off 8h, then individual layer or few layer WS are obtained after centrifugation 30min removes unstripped sediment2Nanometer sheet suspension.Present invention process is simple to operate, and reaction condition is gentle, agents useful for same environmental protection.
Description
Technical field
The invention belongs to the synthesis technical field of visible light catalytic material, and in particular to a kind of individual layer or few layer tungsten disulfide
The preparation method of nanometer sheet.
Background technology
Two nanostructureds of Graphene-carbon, due to its unique structure and physical property is interior in the past few years excites
The great interest of researcher.Meanwhile, as Graphene analog, some have the two-dimensional nanostructure of atomic-level thickness without
Machine compound, such as transient metal sulfide（TMDCs, including MoS2、WS2、TiS2Deng）, transition metal oxide（TMOs, including
MoO3、WO3Deng）With six boron nitrides（h-BN）Sizable concern has been caused in Science and Technology field.These two dimension knots
Structure shows the process based prediction model of uniqueness and the application in photoelectronics and photonic propulsion has been obtained for confirming.At this
In a little materials, block WS2Because narrow indirect band gap limits its application in photoelectron, and two dimension WS2Nanometer sheet can make it
There is great variety so as to have a series of potential application values in property.It is reported that confirming two dimension WS2Nanometer sheet can pass through
Different methods is obtained, and the liquid phase stripping method of Coleman and his colleague's report is considered as large-scale production individual layer or few layer
WS2Nanometer sheet most efficient method.Restricting its development at present has two big factor-low-yields and to the high according to lazyness of solvent.N- first
Base pyrrolidones and other pyrrolidones based solvents are to be best suitable for peeling off WS2Solvent, but these pyrrolidones based solvents one
As poisonous, boiling point it is high, industrially easily constitute great environmental risk.Although researcher is in low boiling-point and polarity small molecule
WS is peeled off in solvent2Many effort are have also been made, but effect is unsatisfactory.Due to bulk material and polar micromolecules solvent（Water,
Ethanol, methyl alcohol etc.）The mismatch of surface tension, the edge that the cavitation bubble of generation can only appear on crystal is not enough to overcome crystal
The Van der Waals force of interlayer.Therefore, these shortcomings are overcome to realize bulk WS2In polar micromolecules solvent（Water, ethanol etc.）In have
Effect stripping is a kind of great interest and challenge.
The content of the invention
Present invention solves the technical problem that there is provided individual layer or few layer curing a kind of simple to operate and environment-friendly
The preparation method of tungsten nanometer sheet.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of individual layer or less layer tungsten disulfide nano slices
Preparation method, it is characterised in that concretely comprise the following steps：By WS2Powder is dissolved in the mixed solution of ethanol and deionized water, makes WS2
Concentration be 8mg/mL, ultrasonic wave added peels off 8h, then obtains individual layer or few after centrifugation 30min removes unstripped sediment
Layer WS2Nanometer sheet suspension.
Further preferably, described ethanol is 7 with the volume ratio of deionized water with ethanol in the mixed solution of deionized water:
3。
Present invention process is simple to operate, and reaction condition is gentle, agents useful for same environmental protection.
Brief description of the drawings
Fig. 1 is the WS of individual layer obtained in the embodiment of the present invention 4 or few layer2The TEM collection of illustrative plates of nanometer sheet.
Specific embodiment
The above of the invention is described in further details by the following examples, but this should not be interpreted as this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
Prepare ethanol and deionized water（Volume ratio is 1:9）Mixed solution A, weigh appropriate WS2Powder is placed in solution A to be made
WS2Concentration be 8mg/mL, resulting solution is designated as solution B；Ultrasonic wave added is carried out to solution B and peels off 8h；The suspension that will be obtained again
Liquid is placed in a centrifuge, and individual layer or few layer WS are obtained after unstripped sediment is removed in the centrifugal force of 2000g2Nanometer sheet is hanged
Supernatant liquid.
Embodiment 2
Prepare ethanol and deionized water（Volume ratio is 3:7）Mixed solution A, weigh appropriate WS2Powder is placed in solution A to be made
WS2Concentration be 8mg/mL, resulting solution is designated as solution B；Ultrasonic wave added is carried out to solution B and peels off 8h；The suspension that will be obtained again
Liquid is placed in a centrifuge, and individual layer or few layer WS are obtained after unstripped sediment is removed in the centrifugal force of 2000g2Nanometer sheet is hanged
Supernatant liquid.
Embodiment 3
Prepare ethanol and deionized water（Volume ratio is 5:5）Mixed solution A, weigh appropriate WS2Powder is placed in solution A to be made
WS2Concentration be 8mg/mL, resulting solution is designated as solution B；Ultrasonic wave added is carried out to solution B and peels off 8h；The suspension that will be obtained again
Liquid is placed in a centrifuge, and individual layer or few layer WS are obtained after unstripped sediment is removed in the centrifugal force of 2000g2Nanometer sheet is hanged
Supernatant liquid.
Embodiment 4
Prepare ethanol and deionized water（Volume ratio is 7:3）Mixed solution A, weigh appropriate WS2Powder is placed in solution A to be made
WS2Concentration be 8mg/mL, resulting solution is designated as solution B；Ultrasonic wave added is carried out to solution B and peels off 8h；The suspension that will be obtained again
Liquid is placed in a centrifuge, and individual layer or few layer WS are obtained after unstripped sediment is removed in the centrifugal force of 2000g2Nanometer sheet is hanged
Supernatant liquid.
Embodiment 5
Prepare ethanol and deionized water（Volume ratio is 9:1）Mixed solution A, weigh appropriate WS2Powder is placed in solution A to be made
WS2Concentration be 8mg/mL, resulting solution is designated as solution B；Ultrasonic wave added is carried out to solution B and peels off 8h；The suspension that will be obtained again
Liquid is placed in a centrifuge, and individual layer or few layer WS are obtained after unstripped sediment is removed in the centrifugal force of 2000g2Nanometer sheet is hanged
Supernatant liquid.
Embodiment above describes general principle of the invention, principal character and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, simply original of the invention is illustrated described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements each fall within
In the scope of protection of the invention.
Claims (2)
1. a kind of individual layer or the less preparation method of layer tungsten disulfide nano slices, it is characterised in that concretely comprise the following steps：By WS2Powder is molten
In the mixed solution of ethanol and deionized water, make WS2Concentration be 8mg/mL, ultrasonic wave added peel off 8h, then by centrifugation
30min obtains individual layer or few layer WS after removing unstripped sediment2Nanometer sheet suspension.
2. individual layer according to claim 1 or the less preparation method of layer tungsten disulfide nano slices, it is characterised in that：Described
Ethanol is 7 with the volume ratio of deionized water with ethanol in the mixed solution of deionized water:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105545.2A CN106745272A (en) | 2017-02-26 | 2017-02-26 | A kind of preparation method of individual layer or few layer tungsten disulfide nano slices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105545.2A CN106745272A (en) | 2017-02-26 | 2017-02-26 | A kind of preparation method of individual layer or few layer tungsten disulfide nano slices |
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| Publication Number | Publication Date |
|---|---|
| CN106745272A true CN106745272A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105545.2A Pending CN106745272A (en) | 2017-02-26 | 2017-02-26 | A kind of preparation method of individual layer or few layer tungsten disulfide nano slices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003729A (en) * | 2020-01-03 | 2020-04-14 | 青岛科技大学 | Ultra-high concentration tungsten disulfide nano paste and preparation method thereof |
| CN112678865A (en) * | 2021-01-13 | 2021-04-20 | 福建工程学院 | Transition metal sulfide-based optical amplitude limiting material |
-
2017
- 2017-02-26 CN CN201710105545.2A patent/CN106745272A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 周凯歌: "新型有机分子器件与二维纳米材料的设计、合成和表征", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003729A (en) * | 2020-01-03 | 2020-04-14 | 青岛科技大学 | Ultra-high concentration tungsten disulfide nano paste and preparation method thereof |
| CN112678865A (en) * | 2021-01-13 | 2021-04-20 | 福建工程学院 | Transition metal sulfide-based optical amplitude limiting material |
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Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |