CN107177887A - A kind of room temperature water solution growth stannous selenide nanometer rods cone monocrystalline and its method - Google Patents
A kind of room temperature water solution growth stannous selenide nanometer rods cone monocrystalline and its method Download PDFInfo
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- CN107177887A CN107177887A CN201710496489.XA CN201710496489A CN107177887A CN 107177887 A CN107177887 A CN 107177887A CN 201710496489 A CN201710496489 A CN 201710496489A CN 107177887 A CN107177887 A CN 107177887A
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/46—Sulfur-, selenium- or tellurium-containing compounds
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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
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/66—Crystals of complex geometrical shape, e.g. tubes, cylinders
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
Abstract
The present invention relates to a kind of room temperature water solution growth stannous selenide nanometer rods cone monocrystalline and its method, using stannous chloride as tin source, selenium powder is selenium source, and stannous chloride and chelating agent are dissolved in water, solution A is obtained；Selenium powder is dissolved in potassium hydroxide aqueous solution, solution B is obtained.Pass through solution A and solution B hybrid reaction, you can obtain stannous selenide nanometer rods cone monocrystalline.The present invention uses aqua-solution method, by nanocrystalline nucleation, curing, nuclei growth three phases, completes the nanocrystalline growth of stannous selenide, stannous selenide nanometer rods cone monocrystalline is finally separating to obtain, reaction temperature is room temperature, simple to operate, reaction time is short, is easily controlled；The stannous selenide that the present invention is grown is nanometer rods taper looks and is nano crystal, and with more sharp nanotip, the stannous selenide nanometer rods cone monocrystalline purity of acquisition is high.
Description
Technical field
The invention belongs to nanocrystalline material synthesis field, and in particular to a kind of room temperature water solution growth stannous selenide nanometer rods
Bore monocrystalline and its method.
Background technology
Stannous selenide (SnSe) belongs to a kind of IV-VI main group lamellar compound.Its energy gap is in 0.9 to 1.3 electronics
Volt, with very high absorption coefficient (~105cm-1), these excellent optical properties cause stannous selenide in photovoltaic solar
The fields such as field, infrared electro device, detector are with a wide range of applications.In addition it has ultralow heat transfer high
Thermoelectricity capability, is a kind of potentiality very huge thermoelectric material (Zhao LiDong, Lo ShihHan, Zhang YongSheng
et al.,Ultralow thermal conductivity and high thermoelectric figure of merit
in SnSe crystals[J],Nature,2014,508:373-377).The abundance of tin and selenium element in the earth's crust is respectively
2.2% and 0.05%, belong to rich in element, the physical resources of abundance are provided for its follow-up development.For structural point, selenium
Change stannous and belong to rhombic system, space group is Pnma (62).Its cell parameter a, b, c are respectively：
WithIt is very weak Van der Waals force chemical bond between a kind of lamellar compound, atomic layer that stannous selenide, which is, and in atom
It is to act on very strong covalent bond in layer, this crystallography properties so that stannous selenide is expected to be prepared into the phototube of thickness in monolayer
Part.
Design and synthesis stannous selenide nanotopography cause the broad interest of researcher, up to the present, stannous selenide
The many patterns of nano material have been prepared out, including nanometer sheet, nanometer rods, nanobelt etc., although these patterns by
Report, still, some technical disadvantages existed, such as, the nanometer sheet crystallinity obtained are bad, be not complete nanometer list
Crystalline substance, but polycrystalline material, or reaction time are long.
The content of the invention
It is an object of the invention to overcome problems of the prior art, there is provided a kind of room temperature water solution growth selenizing
Stannous nanometer rods bore monocrystalline and its method, realize that one kind is simple and easy to apply, react the producer of quick, with low cost nano crystal
Method, particularly obtains the method that stannous selenide nanometer rods bore monocrystalline.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
Comprise the following steps：
Step one：Stannous chloride and chelating agent are added to the water, solution A is obtained；Potassium hydroxide water is dissolved in selenium powder
In solution, solution B is formed；Wherein the mol ratio of stannous chloride and chelating agent is 1：(5~100)；Selenium powder and potassium hydroxide rub
You are than being 1：(200~300)；
Step 2：Solution A and solution B are mixed, solution C is obtained, solution C first becomes colourless and then gradually becomes black,
Reaction terminates, and the solution of black is separated, and obtains stannous selenide nanometer rods cone monocrystalline.
Further, the chelating agent in step one includes L-TARTARIC ACID or D- tartaric acid.
Further, the water in step one uses resistivity for 18M Ω high purity water.
Further, the concentration of selenium powder is 0.05mol/L in the solution B of step one.
Further, the reaction time is 2~10 minutes in step 2.
Further, the temperature reacted in step 2 is 0~30 DEG C.
Further, the solution of black passes through the centrifugation that centrifugation rate is 8000~10000 revs/min in step 2
Obtain stannous selenide nanometer rods cone monocrystalline.
Further, the time of centrifugation is 3 minutes.
It is a kind of that obtained stannous selenide nanometer rods cone monocrystalline, stannous selenide nanometer rods cone are grown using method as described above
The diameter of monocrystalline is at 40~60 nanometers, and length is at 500~600 nanometers.
Further, stannous selenide nanometer rods cone monocrystalline is black.
Compared with prior art, the present invention has following beneficial technique effect：
Stannous chloride and chelating agent are first configured to transparent solution in the inventive method.In this course, chelating agent
Effect prevent the hydrolysis of stannous chloride, form a kind of solution of stable transparent.Fresh selenium powder and potassium hydroxide solution shape
Into a kind of wine-colored solution, this solution contains active high plasma selenium.When both solution are mixed, the high selenium of activity
Ion and the tin ion being chelated carry out the reaction of atomic scale, form substantial amounts of stannous selenide nucleus；Stannous selenide nucleus leads to
Competition is crossed, some nucleus are gradually grown up, and what is had fades away, complete nucleus maturing process；Finally, the crystal grown up is consumed instead
The small crystal nucleus in system is answered, a kind of dynamic equilibrium is reached, crystal growth is completed；The present invention uses aqua-solution method, using selenium source and
Tin source is the characteristics of room temperature fast reaction, by nanocrystalline nucleation, curing, nuclei growth three phases, completes stannous selenide
Nanocrystalline growth, is then simply centrifuged, you can the stannous selenide for preparing pure phase is nanocrystalline.Raw material of the present invention
Wide material sources, solvent is cheap, and reaction is gentle, and other preparation methods compare, and required reaction temperature is room temperature, without
Individually regulation temperature, greatly reduces the energy resource consumption needed for reaction；The nanocrystalline purity obtained is very high, no any impurity phase
Occur, reaction yield 100%, the generation of no any impurity phase.The present invention is synthesized using aqueous solution room temperature procedure simple and easy to apply
Go out high-quality stannous selenide nano crystal, with important economic value.
Further, whole growth time involved in the present invention is that the reaction time is short, is easily controlled within ten minutes.
Involved separation process is also easily quick simultaneously, whole technical process simple and fast.Reaction is quick, time saving technology
Route will more and more be paid attention to.The present invention is that one kind can save the time and can improve stannous selenide nano material knot again
The method of crystalline substance, not only with scientific research meaning, it may have good practical value.
The habit for the stannous selenide nano crystal that the present invention is grown is rod taper, with compared with tip pattern
With complete crystallinity, crystal defect is less, has great importance to its photoelectric properties, is expected in field emission gun, electronics
Launch party face has potential application.In addition, for stannous selenide nano crystal of the present invention is with respect to its micron-sized block materials,
Its specific surface area is greatly increased, and is expected to improve photocatalysis efficiency in terms of photocatalysis performance.The stannous selenide that the present invention is grown
Nanometer rods cone is there is provided a kind of new nanotopography, and monocrystalline purity is high, without any observable impurities phase, to explore selenizing
Functional research such as the potential physical chemistry of stannous nano material provides important material and supported.
Brief description of the drawings
Fig. 1 is the powder x-ray diffraction spectrum of the stannous selenide nanometer rods cone of the present invention.
Fig. 2 is the scanning electron microscope diagram of the stannous selenide nanometer rods cone of the present invention.
Fig. 3 is the transmission electron microscope and SEAD spectrum of stannous selenide nanometer rods cone.
Fig. 4 is the scanning electron microscope diagram of stannous selenide nanometer rods cone.
Embodiment
Stannous selenide nano crystal rod cone growth of the present invention is related to following process.First, by tin source and chelating agent
Be configured to clear solution, the effect of chelating agent prevents tin ion hydrolysis generation hydroxide from separating out solution, it is impossible to and selenium from
The problem of son reaction.Secondly, selenium powder is dissolved in potassium hydroxide aqueous solution, wine-colored solution is formed, containing active very high
Se2-Ion.Work as Se2-When ion meets the chelate of tin in the solution, activity very high Se2-Ion and tin element hold very much
Easily overcome reaction barrier, form substantial amounts of stannous selenide nucleus.Then, stannous selenide nucleus is by competition, and some nucleus are gradually
Grow up, what is had fades away, as big nucleus " eats up " small crystal nucleus, here it is stannous selenide nucleus " maturing process ".Finally, it is long
Big stannous selenide crystal consumes the small crystal nucleus in reaction system, so as to reach a kind of dynamic equilibrium, that is, complete crystal into
It is long.The present invention uses stannous chloride and simple substance selenium powder to be conventional chemical medicine for tin source and selenium source, and required purity will
Ask not high, be the pure rank of analysis, the raw material needed for reacting synthesis is conventional chemical reagent, and nano crystal is carried out in aqueous phase
Growth, the time reacted be a few minutes, and obtain product for high-quality stannous selenide nanometer rods bore monocrystalline.This hair
Bright used method is simple and easy to apply, and reaction speed is fast, with low cost, while can obtain high-quality stannous selenide nanometer again
Rod bores monocrystalline, with very big economic value, is a kind of very method with application prospect.
Specific method of the present invention comprises the following steps：
Step one：The use of high purity water (18M Ω) is reaction medium, stannous chloride is tin source, selenium according to certain mol ratio
Powder is selenium source, and stannous chloride and chelating agent are dissolved in water, and obtains a kind of clear solution A；Both stannous chloride and chelating agent
Between the scope that can adjust of mol ratio be 1：(5~100).Chelating agent is L-TARTARIC ACID or D- tartaric acid.
Step 2：Selenium powder is dissolved in the solution that potassium hydroxide aqueous solution is configured to 0.05mol/L, selenium powder and potassium hydroxide
Mol ratio be 1：(200~300), form a kind of wine-colored solution B.
Wherein, the preparation order of solution A and solution B can be changed by situation.
Step 3：By the chelate solution A of stannous chloride and wine-colored selenium solution B, mixed rapidly at 0~30 DEG C, it is molten
Liquid became colourless and then gradually became black before this.Reaction continues to terminate for 2~10 minutes, then, by the molten of reacted black
Liquid is centrifuged, and centrifugation rate is 8000~10000 revs/min, is centrifuged 3 minutes, you can obtain stannous selenide nanometer rods
Monocrystalline is bored, stannous selenide nanometer rods cone monocrystalline is the nanometer rods powder of black.
0~30 DEG C of reaction temperature refers to environment temperature in the present invention, without specially adjusting.
The present invention is further detailed below in conjunction with instantiation.
Embodiment 1
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 5 mMs L- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：250, form a kind of wine-colored solution.It is at 22 DEG C, the clear solution of stannous chloride and L-TARTARIC ACID is rapid
The wine-colored solution of selenium is poured into, reacts 2 minutes, obtains a kind of dark solution.Dark solution is placed in centrifuge with 10000
Rev/min centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.
As shown in figure 1, the product obtained has very sharp X-ray diffraction peak, indicate preferable crystal structure.It is logical
Cross and the JSPDS in thing phase data storehouse:32-1382 compares, the product and JSPDS obtained:32-1382 fits like a glove, this
Outside, no any impurity peak is detected, and imply that obtained product is pure stannous selenide.
Scanning electron microscope diagram piece shown in Fig. 2 shows that the stannous selenide pattern obtained is bored for stannous selenide nanometer rods
Shape can be seen that come synthesized nanometer rods cone is with very smooth tip by scanning electron microscope diagram.Diameter is about 40
~60 nanometers, about 500 nanometers of length, the size of growth is more uniform.
Transmission electron micrograph is shown shown in Fig. 3, and the stannous selenide pattern obtained also has smooth rod taper
Tip, matches up to 500 rans, and SEM.Meanwhile, the selection electronic diffraction spot in Fig. 3 has rule
Periodic characteristics then, show that obtained stannous selenide nanometer rods cone is nano crystal.
Embodiment 2
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 20 mMs L- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：300, form a kind of wine-colored solution.It is at 28 DEG C, the clear solution of stannous chloride and L-TARTARIC ACID is rapid
The wine-colored solution of selenium is poured into, reacts 5 minutes, obtains a kind of dark solution.Dark solution is placed in centrifuge with 9000
Rev/min centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.
The stannous selenide nanometer rods cone that the present embodiment is obtained is about 500-600 nanometers of length, as shown in Figure 4.
Embodiment 3
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 100 mMs L- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：200, form a kind of wine-colored solution.It is at 20 DEG C, the clear solution of stannous chloride and L-TARTARIC ACID is rapid
The wine-colored solution of selenium is poured into, reacts 10 minutes, obtains a kind of dark solution.Dark solution is placed in centrifuge with 8500
Rev/min centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.The stannous selenide nanometer that the present embodiment is obtained
Rod cone is about 500 nanometers of length.
Embodiment 4
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 10 mMs D- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：260, form a kind of wine-colored solution.It is at 30 DEG C, the clear solution of stannous chloride and D- tartaric acid is rapid
The wine-colored solution of selenium is poured into, reacts 4 minutes, obtains a kind of dark solution.Dark solution is placed in centrifuge with 8000
Rev/min centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.The stannous selenide nanometer that the present embodiment is obtained
Rod cone is about 500 nanometers of length.
Embodiment 5
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 60 mMs D- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：230, form a kind of wine-colored solution.At 0 DEG C, the clear solution of stannous chloride and D- tartaric acid is fallen rapidly
Enter the wine-colored solution of selenium, react 8 minutes, obtain a kind of dark solution.By dark solution be placed in centrifuge with 8700 turns/
Minute centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.The stannous selenide nanometer rods that the present embodiment is obtained
Bore as about 500 nanometers of length.
Embodiment 6
Measure 10 milliliters of water to be put into 50 milliliters of bottle, sequentially add 1 mM and 100 mMs D- winestones of stannous chloride
Acid, magnetic agitation forms a kind of clear solution.Separately selenium powder is dissolved in potassium hydroxide aqueous solution, selenium powder and potassium hydroxide rub
You are than being 1：280, form a kind of wine-colored solution.It is at 26 DEG C, the clear solution of stannous chloride and D- tartaric acid is rapid
The wine-colored solution of selenium is poured into, reacts 3 minutes, obtains a kind of dark solution.Dark solution is placed in centrifuge with 9700
Rev/min centrifugation 3 minutes, outwells the aqueous solution, obtains stannous selenide black powder.The stannous selenide nanometer that the present embodiment is obtained
Rod cone is about 500 nanometers of length.
Comparative example 1
The mol ratio of selenium powder and potassium hydroxide is adjusted to 1：150 or 1:180, other condition be the same as Examples 1.
It was found that when potassium hydroxide consumption is very few, selenium powder can not dissolve, also it can not just be reacted with solution A.
The present invention is a kind of stannous selenide nanometer rods cone nano crystal and growing method, particularly pure phase stannous selenide nanometer
Rod bores the growing method of monocrystalline.The present invention uses water reaction medium, at ambient temperature, by the way that the chelating agent of tin source is transparent molten
Liquid with containing active very high Se2-The potassium hydroxide aqueous solution of ion is mixed, you can obtain stannous selenide nano-powder.Pass through
Stannous selenide nucleus " maturing process ", so as to obtain stannous selenide nanometer rods cone monocrystalline.Developing water solution room temperature preparation method has
Very important meaning.It is that aqueous process solvent is cheap first, it is not necessary to expensive nonaqueous solvents, is a kind of
Reduce the important method of price.Secondly solution at room temperature preparation method can be reduced in material synthesis processes due to spent by high temperature
The huge energy.
The high stannous selenide nanotopography of Fast back-projection algorithm crystallinity has great importance the present invention at room temperature.First,
Complete crystallinity means high crystal mass, and high crystal mass is for meaning that crystal defect is less, to its photo electric
Can have great importance.Secondly, room temperature synthetic method does not need extra heating source, can greatly reduce for the energy
Consumption.Finally, solvent is adopted water as, it is to avoid using the solution (such as ethylenediamine) of irritant smell, for environmental protection
It is significant.Analyzed by powder x-ray diffraction and transmission electron diffraction (TED), what the present invention grew is stannous selenide nanometer rods
Monocrystalline is bored, with more sharp nanotip, brilliant regular appearance, complete crystallization, monodispersity is good.The stannous selenide grown
Nanometer rods bore monocrystalline length about in 500-600 rans.The present invention is bored using aqua-solution method synthesis stannous selenide nanometer rods,
Have the advantages that reaction is gentle, simple to operate and is easily controlled, the product purity obtained is very high, and no any impurity mutually occurs.
The present invention bores monocrystalline for stannous selenide nanometer rods and further explores the sample that various feature properties therein supply high-purity, is
Further the physicochemical properties of research stannous selenide nanometer rods cone monocrystalline provide important material, so that further to explore selenium
The important material of the interesting physical and chemical performance offer such as stannous nanometer rods cone monocrystalline institute potential photocatalysis performance, electricity, magnetic is provided
Support.
Claims (10)
1. a kind of method that room temperature water solution growth stannous selenide nanometer rods bore monocrystalline, it is characterised in that comprise the following steps：
Step one：Stannous chloride and chelating agent are added to the water, solution A is obtained；Potassium hydroxide aqueous solution is dissolved in selenium powder
In, form solution B；Wherein the mol ratio of stannous chloride and chelating agent is 1：(5~100)；The mol ratio of selenium powder and potassium hydroxide
For 1：(200~300)；
Step 2：Solution A and solution B are mixed, solution C is obtained, solution C first becomes colourless and then gradually becomes black, reacted
Terminate, the solution of black is separated, obtain stannous selenide nanometer rods cone monocrystalline.
2. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：Chelating agent in step one includes L-TARTARIC ACID or D- tartaric acid.
3. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：Water in step one uses resistivity for 18M Ω high purity water.
4. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：The concentration of selenium powder is 0.05mol/L in the solution B of step one.
5. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：The reaction time is 2~10 minutes in step 2.
6. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：The temperature reacted in step 2 is 0~30 DEG C.
7. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 1 bore monocrystalline, it is special
Levy and be：The solution of black obtains selenizing Asia by centrifugation rate for 8000~10000 revs/min of centrifugation in step 2
Tin nanometer rods bore monocrystalline.
8. the method that a kind of room temperature water solution growth stannous selenide nanometer rods according to claim 7 bore monocrystalline, it is special
Levy and be：The time of centrifugation is 3 minutes.
9. the stannous selenide nanometer rods cone monocrystalline that a kind of utilization claim 1 methods described growth is obtained, it is characterised in that：The selenium
Change the diameter of stannous nanometer rods cone monocrystalline at 40~60 nanometers, length is at 500~600 nanometers.
10. stannous selenide nanometer rods according to claim 9 bore monocrystalline, it is characterised in that：The stannous selenide nanometer rods are bored
Monocrystalline is black.
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