CN107938027A - A kind of pure tungsten nanofiber, its preparation method and application - Google Patents
A kind of pure tungsten nanofiber, its preparation method and application Download PDFInfo
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- CN107938027A CN107938027A CN201711370838.XA CN201711370838A CN107938027A CN 107938027 A CN107938027 A CN 107938027A CN 201711370838 A CN201711370838 A CN 201711370838A CN 107938027 A CN107938027 A CN 107938027A
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- nanofiber
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
Abstract
The invention belongs to field of nanometer material technology, more particularly, to a kind of pure tungsten nanofiber, its preparation method and application.The present invention prepares pure tungsten nanofiber and comprises the following steps：(1) electrostatic spinning liquid is prepared, and transfer them to and electrostatic spinning is carried out in electrospinning device, tungstenic presoma nanofiber is obtained, and the electrostatic spinning liquid is Tungstenic compound and high polymer binder to be dissolved completely in the mixed liquor of water and organic solvent；(2) the tungstenic presoma nanofiber in step (1) is placed in air furnace and is calcined, obtain WO3Nanofiber；(3) by the WO in step (2)3Nanofiber is transferred in high-temperature atmosphere furnace and calcines, and obtains pure tungsten nanofiber.Pure tungsten nanofiber diameter prepared by the present invention is evenly distributed, continuity is good and has excellent electric conductivity, and can realize the large-scale production and extensive use of pure tungsten nanofiber.
Description
Technical field
The invention belongs to field of nanometer material technology, more particularly, to a kind of pure tungsten nanofiber, its preparation method and answers
With.
Background technology
As the fast development and popularization of intelligent movable equipment, the transparency electrode market demand are growing.For a long time, tin
Leading material of the doped indium oxide (ITO) as transparency electrode market.Due to the rare and its expensive price of phosphide element, seriously
Limit the extensive use of ito transparent electrode.In recent years, domestic and international researcher is directed to developing novel transparent electrode material
Material, such as conducting polymer thin film, carbon nanotubes, graphene and metal nano net, it is intended to substitute traditional ITO materials.
At present, metal nanometer line becomes the research heat of transparent electrode material of new generation because of its high-transmission rate and high conductivity
Point.But the unstable chemcial property of these metal nanometer lines, cause its performance larger with the variation of environmental condition, example
As silver can be with H a small amount of in air2S or CO2React, copper is oxidized easily in atmosphere etc. can all reduce leading for nano wire
Electrically.The characteristics such as tungsten electric conductivity with good stability, excellent, high-melting-point and high rigidity, are used for for a long time
Filament, cutting element and optical instrumentation etc..Therefore, will if high conductivity and good stability with reference to tungsten material
It is applied to transparent electrode material, not only can guarantee that the high-quality-factor of transparency electrode, but also it can be made to have in harsh environments
There is good performance stability.Thus, the development and application of the preparation of tungsten nanofiber and performance study to transparency electrode has
Important scientific value and research significance.
The content of the invention
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of pure tungsten nanofiber, its preparation
The characteristics of method and application, it fully combines tungsten nanofiber product and demand, preparation side of the specific aim to pure tungsten nanofiber
Method is redesigned, and crucial preparation technology parameter is made choice and optimized, and accordingly obtaining a kind of has good lead
Electrically, homogeneous diameter and the pure tungsten nanofiber of higher draw ratio, thus solve the technology of preparing of pure tungsten nanofiber
Problem.
To achieve the above object, one side according to the invention, there is provided a kind of preparation method of pure tungsten nanofiber,
Include the following steps：
(1) electrostatic spinning liquid is prepared, its electrostatic spinning is obtained into tungstenic presoma nanofiber, the electrostatic spinning liquid is
Tungstenic compound and high polymer binder are dissolved in water and the mixed liquor formed in organic solvent；
(2) the tungstenic presoma nanofiber obtained in step (1) is subjected to first time calcining, is obtained by pre-oxidation
WO3Nanofiber；Wherein, first time calcining heating rate be 1 DEG C/min~20 DEG C/min, calcining heat is 400 DEG C~
800 DEG C, soaking time 0.5h~6h；
(3) WO that will be obtained in step (2)3Nanofiber carries out second and calcines, and obtains pure tungsten by high temperature reduction and receives
Rice fiber, wherein the heating rate of second of calcining is 1 DEG C/min~20 DEG C/min, calcining heat is 400 DEG C~1000
DEG C, soaking time 0.5h~4h.
Preferably, in step (1), the percentage by weight of each component is respectively in the electrostatic spinning liquid：Tungstenic chemical combination
Thing 5%~20%, high polymer binder 20%~40%, organic solvent 15%~25%, water 30%~50%.
Preferably, in step (1), the voltage of the electrostatic spinning is 8kV~40kV, electrostatic spinning distance for 10cm~
30cm, electrostatic spinning flow velocity are 2mL/h~5mL/h.
Preferably, in step (1), the Tungstenic compound is ammonium metatungstate, wolframic acid or one kind or more in isopropanol tungsten
Kind.
Preferably, in step (1), the high polymer binder for polyacrylonitrile, polyvinyl alcohol, vinyl acetate resin or
One or more in polyvinylpyrrolidone.
Preferably, in step (1), selected organic solvent is isopropanol, ethanol, n,N-Dimethylformamide, chloroform
Or the one or more in ether.
Preferably, the atmosphere of second calcining described in step (3) be ammonia, carbon source gas or one kind in hydrogen or
It is a variety of.
A kind of other side according to the invention, there is provided the pure tungsten nanofiber production obtained by preparation method
Product.
Other side according to the invention, there is provided a kind of application of the pure tungsten nanofiber product, as saturating
Prescribed electrode material.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
1st, the soluble Tungstenic compound of present invention selection is as tungsten source, and selects water and organic solvent to dissolve tungsten source, utilizes
Electrostatic spinning technique directly prepares tungstenic presoma nanofiber；
2nd, fabricated in situ pure tungsten nanofiber is realized by calcining twice, is removed first by being calcined in first time air
High polymer binder in fiber obtains WO3Nanofiber, then reduces WO in reducing atmosphere stove3Obtain pure tungsten nanofiber；
3rd, the present invention using macromolecule organic as binding agent, by adjust the mass percent of high polymer binder with
The viscosity of accurate control electrostatic spinning liquid, can control fiber diameter, and the successful important step of electrostatic spinning process；
4th, the present invention realizes accurately controlling to nanofiber by adjusting electrospinning parameters, and such as improving spinning voltage can
To accelerate electrostatic spinning speed, the diameter of nanofiber can be controlled by adjusting the flow velocity of solution；
5th, offer is prepared in situ for pure tungsten nanofiber using carbon source or hydrogen source gas as reducing gas in the present invention
Necessary synthesis atmosphere；
6th, the present invention prepare pure tungsten nanofiber calcining heat it is relatively low, both met the reduction bar of tungsten oxide nanofibers
Part, also ensure that the continuity of pure tungsten nanofiber；
7th, the present invention prepares pure tungsten nanofiber using electrostatic spinning technique, and this method is simple and quick, cost-effective, is adapted to
Large-scale production.
Brief description of the drawings
Fig. 1 is the pure tungsten nanofiber preparation method flow chart constructed by preferred embodiment according to the invention；
The XRD spectrum that it is pure tungsten nanofiber constructed by preferred embodiment 1 according to the invention that Fig. 2, which is,；
Fig. 3 is the pure tungsten nanofiber SEM photograph constructed by preferred embodiment 1 according to the invention；
Fig. 4 is the test device schematic diagram of the pure tungsten nanofiber constructed by preferred embodiment according to the invention；
Fig. 5 is the I-V curve of the pure tungsten nanofiber constructed by preferred embodiment according to the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not forming conflict each other can be mutually combined.
Fig. 1 is the pure tungsten nanofiber preparation method flow chart constructed by preferred embodiment according to the invention, including with
Lower step：
(1) electrostatic spinning liquid is prepared, and transfers them to electrostatic spinning in electrospinning device and obtains tungstenic presoma and receive
Rice fiber, the electrostatic spinning liquid is the mixed liquor that Tungstenic compound and high polymer binder are dissolved in water and organic solvent
In, it is uniformly mixing to obtain the solution of stable homogeneous；Wherein the percentage by weight of each component is respectively in electrostatic spinning liquid：Tungstenic
Compound 5%~20%, high polymer binder 20%~40%, organic solvent 15%~25%, water 30%~50%；Static Spinning
The voltage of silk is 8kV~40kV, and electrostatic spinning distance is 10cm~30cm, and electrostatic spinning flow velocity is 2mL/h~5mL/h；Contain
Tungsten compound is the one or more in ammonium metatungstate, wolframic acid or isopropanol tungsten；High polymer binder is polyacrylonitrile, polyethylene
One or more in alcohol, vinyl acetate resin or polyvinylpyrrolidone；Organic solvent is isopropanol, ethanol, N, N- diformazans
One or more in base formamide, chloroform or ether.
(2) the tungstenic presoma nanofiber obtained in step (1) is placed in air furnace and calcined for the first time, pass through pre- oxygen
Change obtains WO3Nanofiber.Wherein, air furnace heating rate is 1 DEG C/min~20 DEG C/min, and calcining heat is 400 DEG C~800
DEG C, soaking time 0.5h~4h.
(3) WO that will be obtained in step (2)3Nanofiber, which is placed in high-temperature atmosphere furnace, carries out second of calcining, gas atmosphere
It is one or more in ammonia, carbon source gas or hydrogen to enclose, pure tungsten nanofiber is obtained by high temperature reduction, wherein atmosphere furnace
Heating rate is 1 DEG C/min~20 DEG C/min, and calcining heat is 400 DEG C~1000 DEG C, soaking time 0.5h~4h.
Calcining pre-oxidation for the first time obtains WO3, can be after cooling by gained WO after nanofiber3Nanofiber shifts
Carry out calcining for second in another boiler tube；Can also be by first time calcining and second of calcining in same high-temperature atmosphere furnace
Middle progress, for the first time calcining directly switch to carbon containing or hydrogeneous atmosphere after terminating by air atmosphere.
There is good electric conductivity according to the pure tungsten nanofiber product obtained by above-mentioned preparation method, its electrical conductivity is up to
1415S/cm, uniform diameter are distributed between 300-500nm, and the length of fiber reaches hundreds of microns to several millimeters, these
Excellent performance causes pure tungsten nanofiber to have potential application value in transparent electrode material application aspect.
It is embodiment below：
Embodiment 1：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 600 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 600 DEG C, and soaking time is set as 4h.
Embodiment 2：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 700 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 600 DEG C, and soaking time is set as 4h.
Embodiment 3：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 800 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 600 DEG C, and soaking time is set as 4h.
Embodiment 4：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, solution that is homogeneous, stablizing is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred to spinning equipment
Middle carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm,
Spinning flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 900 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 600 DEG C, and soaking time is set as 4h.
Embodiment 5：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 600 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 700 DEG C, and soaking time is set as 4h.
Embodiment 6：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 600 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 800 DEG C, and soaking time is set as 4h.
Embodiment 7：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 600 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 900 DEG C, and soaking time is set as 4h.
Embodiment 8：
As shown in Figure 1, first, electrostatic spinning liquid is prepared, 10g ammonium metatungstates and 30g PVP are dissolved in 20g water and 40g
In the mixed solution of ethanol, the solution of stable homogeneous is uniformly mixing to obtain；Then, electrostatic spinning liquid is transferred in spinning equipment
Carry out electrostatic spinning, you can obtain tungstenic presoma nanofiber.Wherein, spinning voltage 18kV, spinning distance is 15cm, is spun
Silk flow velocity is 4mL/h.Secondly, above-mentioned tungstenic presoma nanofiber is placed in progress pre-oxidation treatment in resistance furnace to obtain
WO3Nanofiber.Wherein, the heating rate of resistance furnace is set as 8 DEG C/min, and holding temperature is 600 DEG C, soaking time 4h.
Finally, by WO3Nanofiber is transferred to progress reduction treatment in tube furnace and obtains pure tungsten nanofiber.Wherein heating rate is 10
DEG C/min, holding temperature is 1000 DEG C, and soaking time is set as 4h.
Fig. 2 is the XRD spectrum for the pure tungsten nanofiber being prepared according to technology in embodiment 1.By mutually being marked with pure tungsten
Quasi- XRD diffraction card contrast is it can be found that all diffraction maximums both correspond to pure tungsten phase in embodiment 1.Thus illustrate, utilize the system
Preparation Method, can realize the preparation of pure tungsten nanofiber in as low as 600 DEG C of reduction temperature.
Fig. 3 is the SEM figures for the pure tungsten nanofiber being prepared according to technology in embodiment 1.It can be seen from the figure that system
Standby pure tungsten nanofiber diameter is uniformly distributed between 300-500nm.Nanofiber still keeps good after calcining
Continuity, single fiber length, which can reach, some tens of pm or even arrives several millimeters.In addition, the Nanowire after calcining
Dimension table face is smooth, and crystal grain is tiny and fine and close.This fine and close and continuous fibre structure ensure that the good electricity of pure tungsten nanofiber
Learn performance.
Fig. 4 is the electrical performance testing device schematic diagram of one-dimensional pure tungsten nanofiber in the present invention.First, bipolar electrode is utilized
Method collects pure tungsten nanofiber arranged in parallel, and nanofiber arranged in parallel is transferred on quartz plate；Then, will be above-mentioned
Quartz plate, which is sequentially placed into resistance furnace and tube furnace, to be pre-oxidized and high temperature reduction, you can obtains parallel on quartz plate surface
The pure tungsten nanofiber of row；Finally, gold electrode is sputtered at fiber both ends, leaves 500 μm of conducting channel, thus obtain pure tungsten and receive
The electrical performance testing device of rice fiber.
Fig. 5 is the I-V curve figure that one-dimensional pure tungsten nanofiber tests device in embodiment 1.As shown in the figure, in test device
Electrode both ends apply test voltage, and test the electric current by device channel.Wherein, voltage range arrives 1V, test voltage for -1V
Step pitch is 0.02V, and test number of fiber is 10.Find by test, closed by the electric current for testing device with voltage linear
System, illustrates that gold electrode maintains good Ohmic contact with pure tungsten nanofiber.According to Ohm's law, pure tungsten nanometer is calculated
The electrical conductivity of fiber is 1415S/cm, has exceeded the electric property of most of Electrospun nano-fibers.Since tungsten has in itself
Preferable heat endurance and corrosion resistance, with reference to itself excellent electric property so that tungsten nanofiber is in transparency electrode etc.
The preparation field of micro photo electric device is with a wide range of applications.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of preparation method of pure tungsten nanofiber, it is characterised in that include the following steps：
(1) electrostatic spinning liquid is prepared, its electrostatic spinning is obtained into tungstenic presoma nanofiber, the electrostatic spinning liquid is tungstenic
Compound and high polymer binder are dissolved in water and the mixed liquor formed in organic solvent；
(2) the tungstenic presoma nanofiber obtained in step (1) is subjected to first time calcining, WO is obtained by pre-oxidation3Nanometer
Fiber；Wherein, the first time calcining heating rate is 1 DEG C/min~20 DEG C/min, and calcining heat is 400 DEG C~800 DEG C, is protected
Warm time 0.5h~6h；
(3) WO that will be obtained in step (2)3Nanofiber carries out second and calcines, and pure tungsten Nanowire is obtained by high temperature reduction
Dimension, wherein the heating rate of second of calcining is 1 DEG C/min~20 DEG C/min, calcining heat is 400 DEG C~1000 DEG C, is protected
Warm time 0.5h~4h.
2. preparation method as claimed in claim 1, it is characterised in that in step (1), each component in the electrostatic spinning liquid
Percentage by weight be respectively：Tungstenic compound 5%~20%, high polymer binder 20%~40%, organic solvent 15%~
25%, water 30%~50%.
3. preparation method as claimed in claim 1 or 2, it is characterised in that in step (1), the voltage of the electrostatic spinning is
8kV~40kV, electrostatic spinning distance is 10cm~30cm, and electrostatic spinning flow velocity is 2mL/h~5mL/h.
4. preparation method as claimed in claim 1, it is characterised in that in step (1), the Tungstenic compound is metatungstic acid
One or more in ammonium, wolframic acid or isopropanol tungsten.
5. preparation method as claimed in claim 1, it is characterised in that in step (1), the high polymer binder is poly- third
One or more in alkene nitrile, polyvinyl alcohol, vinyl acetate resin or polyvinylpyrrolidone.
6. preparation method as claimed in claim 1, it is characterised in that in step (1), selected organic solvent is isopropyl
One or more in alcohol, ethanol, n,N-Dimethylformamide, chloroform or ether.
7. preparation method as claimed in claim 1, it is characterised in that the atmosphere of second of calcining described in step (3)
It is the one or more in ammonia, carbon source gas or hydrogen.
A kind of 8. pure tungsten nanofiber product as obtained by claim 1-7 any one of them preparation methods.
9. a kind of application of pure tungsten nanofiber product as claimed in claim 8, it is characterised in that as transparency electrode material
Material.
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| CN109898367A (en) * | 2019-01-31 | 2019-06-18 | 华中科技大学 | It is a kind of it is inkless can erasable nanofiber paper repeatedly preparation method and products thereof |
| CN109898367B (en) * | 2019-01-31 | 2020-06-05 | 华中科技大学 | Preparation method of inkless repeatedly erasable nanofiber paper and product thereof |
| CN109926063A (en) * | 2019-04-04 | 2019-06-25 | 台州学院 | A kind of preparation method of copper tungstate nanofiber photocatalyst |
| CN109926063B (en) * | 2019-04-04 | 2021-11-30 | 台州学院 | Preparation method of copper tungstate nanofiber photocatalyst |
| CN111270348A (en) * | 2020-03-19 | 2020-06-12 | 东莞东阳光科研发有限公司 | SrVO3Nanofiber preparation method and related products |
| CN112481740A (en) * | 2020-10-15 | 2021-03-12 | 南昌航空大学 | Brush-shaped WO3Preparation method and application of/C nanowire |
| CN112481740B (en) * | 2020-10-15 | 2023-02-21 | 南昌航空大学 | Brush-shaped WO 3 Preparation method and application of/C nanowire |
| CN113791124A (en) * | 2021-05-20 | 2021-12-14 | 中国石油大学(华东) | NO driven by wind power friction nano generator2Gas monitoring system and preparation method and application thereof |
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