CN103469291B - A kind of method of low-temperature growth rutile titanium dioxide monocrystal nano line array under normal pressure - Google Patents
A kind of method of low-temperature growth rutile titanium dioxide monocrystal nano line array under normal pressure Download PDFInfo
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 38
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 17
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000035484 reaction time Effects 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 239000005388 borosilicate glass Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
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- 239000000463 material Substances 0.000 claims description 3
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- 150000001408 amides Chemical class 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000005361 soda-lime glass Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010189 synthetic method Methods 0.000 abstract description 3
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- 238000010494 dissociation reaction Methods 0.000 description 3
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- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000005643 Pelargonic acid Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
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- 241000251468 Actinopterygii Species 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241000208181 Pelargonium Species 0.000 description 1
- WLFQVYGQQKKEMR-UHFFFAOYSA-M [Cl+].[Cl-] Chemical group [Cl+].[Cl-] WLFQVYGQQKKEMR-UHFFFAOYSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001239 high-resolution electron microscopy Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 238000005245 sintering Methods 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 238000005287 template synthesis Methods 0.000 description 1
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under a kind of normal pressure, containing following steps: above-mentioned raw materials for starting raw material, is put into vial or tetrafluoroethylene reaction vessel by after certain stoichiometric ratio mixing and stirring with titanium source, n-nonanoic acid by (1); (2) synthesis under normal pressure container is put into thermostat container, regulate temperature of reaction to be 90-220 DEG C, the reaction times is 1-100 hour, and after reaction, container naturally cools to room temperature; (3) sample in reaction vessel is taken out, monocrystalline rutile type nano linear array is obtained after cleaning, oven dry, the inventive method utilizes solvent phase transformation generating steam to compress into the method for row hydrothermal/solvent thermal response synthesis of titanium dioxide nano wire relative to tradition, is a kind of safety and environmental protection synthetic method of low-temperature atmosphere-pressure.
Description
Technical field
The present invention relates to the method for low-temperature growth rutile titanium dioxide monocrystal nano line array under a kind of normal pressure.
Background technology
Titanium dioxide is a kind of important semiconductor material, is widely used in fields such as solar cell, photocatalysis hydrogen production, photocatalysis to degrade organic matter, lithium cell and vapor phase sensors.The performance of titanium dioxide depends on its microscopic appearance, size and crystal formation.In the various nanostructures reported, single crystal titanium dioxide nanowire due to the one dimension transferring charge passage of its uniqueness can fast transport electronics effectively suppress the compound of electron-hole, thus become the important object [ZhangQF of scientific research and industrial application, etal.Nanoscale, 2012,4,1436.LinYJ, etal.ChemicalPhysicsLetters2011,507,209].
The method of the synthetic single crystal titanium dioxide nano thread reported has template [LeiY, etal.Appl.Phys.Lett.2001, 78, 1125], vapor-liquid-solid growth [ZhugeFW, J.Phys.Chem.C2012, 116, 24367], chemical vapour deposition [LeeJ – C, etal., Cryst.GrowthDes., 2007, 7, 2588], organometallics chemical gaseous phase deposition [WuJ – J, etal.Phys.Chem.B, 2004, 108, 3377], magnetron sputtering [MengLJ, etal., AppliedSurfaceScience, 2010, 256, 3676], hydrothermal method/solvent-thermal method FengXJ, etal., NanoLett., 2008, 8, 3781.LiuB, etal., J.Am.Chem.Soc., 2009, 131, 3985].In above-mentioned synthetic method, template synthesis is complicated, first will prepare template, then removes template by high temperature sintering or chemical corrosion, and the diameter of nano wire and length limited are in the template selected simultaneously.Chemical vapour deposition and gas-liquid-solid growth needs pyroreaction condition also consume a large amount of energy, and productive rate is lower.Hydrothermal method is different with regular solution synthetic chemistry from solvent-thermal method, in the pressurized vessel of sealing, certain solvent is adopted to be reaction medium, the chemical reaction that (airtight spontaneous vapour pressure) carries out under high temperature (being generally less than 250 DEG C), reaction under high pressure environment.The advantage of hydro-thermal and solvent-thermal process method enables reaction directly generate oxide nanocrystalline at a lower temperature, and the metastable phase that cannot obtain under normal conditions before generating, avoids high-temperature calcination process, productive rate is high, cost low [Shi Liyi etc., China YouSe Acta Metallurgica Sinica, 2011,21,2465], and traditional technique prepare rutile needs more than 600 DEG C, generate [Zhang Qinghong etc., Journal of Inorganic Materials, 2001,16,833].But utilizing the hot legal system of hydrothermal/solvent to want to work in hyperbaric environment for a long time for monocrystal nanowire, the pressure spontaneous due to solvent evaporation or the quick-fried still of the aging easy generation of reactor, cause danger to the person and equipment.
Therefore be necessary to develop a kind of low temperature but the technique of safe synthesis of titanium dioxide monocrystalline gold redrock nano linear array in atmospheric conditions.
Summary of the invention
The method of titanium dioxide single crystalline rutile type nano linear array is prepared under the object of this invention is to provide a kind of atmospheric low-temperature, the method technique is simple, easy handling controls, cost is low, pollution-free, and can under synthesis under normal pressure condition low-temp reaction safe synthesis of titanium dioxide monocrystalline rutile type nano linear array.
The present invention as unique solvent, replaces pressure influence to change the Gibbs free energy of reaction by weak acid slow releasing hydrogen ion by means of n-nonanoic acid, makes titanium dioxide nanocrystalline preferential along the growth of [001] direction.The fusing point of n-nonanoic acid is 11 ~ 12.5 DEG C; boiling point is 253 DEG C; therefore with hydrothermal/solvent thermal response unlike; do not add the solvent (as water or ethanol etc.) being produced spontaneous vapour pressure under low temperature by phase transformation in the reaction; and generate crystal under utilizing spontaneous vapor injection condition; reaction of the present invention is that the reaction of crystallographic orientation chemistry occurs in the liquid state not having phase transformation; there is no reaction pressure, in such as vial and the polytetrafluoroethylcontainer container not having stainless steel pressure casing to protect, directly can carry out synthesis under normal pressure safely.
So the core reaction reagent that the present invention utilizes has slow releasing hydrogen ion to replace pressure influence, thus the n-nonanoic acid changing the Gibbs free energy of reaction makees solvent, make titanium dioxide nanocrystalline that the reaction of crystallographic orientation chemistry preferentially occur along [001] direction.
In addition, core reagent n-nonanoic acid used in the inventive method, the acid of another name pelargonic acid, pelargonic acid or fish pelargonium, is a kind of widely used organic synthesis raw material, is defined as the flavouring agent allowing to use by GB2760-96.Main in order to prepare coconut and berry fruit essence, be therefore a kind of reagent of complete environmental protection.
Foregoing invention object of the present invention is achieved by the following technical solution: a kind of method preparing titanium dioxide single crystalline rutile type nano linear array under atmospheric low-temperature, containing following steps:
(1) get titanium source, n-nonanoic acid stirs and obtain mixed solution;
(2) mixed solution is put into airtight synthesis under normal pressure container, synthesis under normal pressure container is put into thermostat container, regulate temperature of reaction to be 90 ~ 220 DEG C, the reaction times is 1 ~ 100 hour, is cooled to room temperature after reaction;
(3) take out the sample in reaction vessel, after cleaning, oven dry, obtain monocrystalline rutile type nano linear array.
In step of the present invention (1), the volume ratio of titanium source, n-nonanoic acid is preferably 0.01 ~ 10mL ︰, 1 ~ 60mL.
Titanium source described in step of the present invention (1) is preferably one or more in titanium tetrachloride, titanous chloride, titanyl sulfate, butyl (tetra) titanate and isopropyl titanate.
The time of stirring in step of the present invention (1) is preferably 5min-1h.
Synthesis under normal pressure container described in step of the present invention (2) is preferably the sealed vessel that plastics or glass material are made, and reacts the stainless steel casing unlike not adding pressure-bearing and protect with hydrothermal method.
Plastics of the present invention are preferably tetrafluoroethylene, polyimide, polybenzoate or PI polymeric amide, and described glass is preferably soda-lime glass or borosilicate glass.
Cleaning described in step of the present invention (3) is preferably and adopts deionized water and dehydrated alcohol successively to wash for several times.
Temperature when drying in step of the present invention (3) is preferably 50 ~ 70 DEG C, and drying time is preferably 5 ~ 48h.
Utilizing n-nonanoic acid as reaction reagent in technique scheme of the present invention, is a kind of crystal chemistry synthetic method of atmospheric low-temperature.N-nonanoic acid is a kind of lipid acid, chemical molecular formula CH
3(CH
2)
7cOOH.In n-nonanoic acid molecule, carboxyl carbon atom forms 3 σ keys with alkyl and two Sauerstoffatoms respectively with sp2 hybridized orbital, these 3 σ keys are in same plane, a remaining p electronics and Sauerstoffatom form π key, constitute the π key of C=O in carboxyl, but the oxygen in the-OH part in carboxyl has a pair non-shared electron, the pi-conjugated system of p-can be formed with π key.Because p-is pi-conjugated, the electronic cloud on the Sauerstoffatom on-OH base moves to carbonyl, and the electronic cloud between O-H, closer to Sauerstoffatom, makes O-H bond polarity strengthen, is conducive to the dissociation of H atom.After n-nonanoic acid dissociation goes out H, the hydrolysis of titanous chloride can be suppressed, make it slowly generate titanium dioxide crystal seed and carry out ordered arrangement.Simultaneously, from structural formula, hydrogen atom in n-nonanoic acid on alkyl can be large with electronegativity in titanous chloride chlorine atom attract, along carbochain ordered arrangement, thus reduce the Gibbs free energy of titanium dioxide seeded growth, and the chlorion after the dissociation of titanium source is adsorbed on { on 110} face, making its [001] direction, preferential edge that crystallographic orientation chemistry occur and reacting of titanium dioxide nucleus.
Tool of the present invention has the following advantages:
(1) in preparation method of the present invention, adopt n-nonanoic acid as unique solvent, replace pressure influence to change the Gibbs free energy of reaction by weak acid slow releasing hydrogen ion, make titanium dioxide nanocrystalline preferential along the growth of [001] direction;
(2) solvent adopted during reaction of the present invention is n-nonanoic acid, spontaneous vapour pressure can not be produced when reacting, so, the present invention's reaction is the crystallographic orientation chemistry reaction occurred in liquid state, can react by safety normal-pressure in synthesis under normal pressure container is as vial and polytetrafluoroethylcontainer container, reaction safety is high;
(3) the inventive method technique is simple, easy handling controls, cost is low, pollution-free, and can under synthesis under normal pressure condition low-temp reaction, utilizing reagent phase transformation generating steam to carry out the method for Hydrothermal Synthesis titanium dioxide nanowire array relative to tradition, is a kind of safety and environmental protection synthesis technique of normal pressure.
Accompanying drawing explanation
Fig. 1 is the XRD figure spectrum of the titanium dioxide single crystalline nano-wire array of preparation in the embodiment of the present invention 1;
Fig. 2 is the scanning electron microscopic picture of titanium dioxide single crystalline nano-wire array of preparation in the embodiment of the present invention 1, the wherein side picture of a figure nano-wire array, b figure nano-wire array overlook picture;
Fig. 3 is the transmission electron microscope picture of titanium dioxide single crystalline nano wire of preparation in the embodiment of the present invention 1, and wherein a figure is the low power electron microscopic picture of titanium dioxide single crystalline nano wire, the electron-diffraction diagram of illustration to be corresponding surface sample be monocrystalline; B figure is the high-resolution electron microscopy picture of titanium dioxide single crystalline nano wire;
Fig. 4 is the XRD figure spectrum of the titanium dioxide single crystalline nano-wire array of preparation in the embodiment of the present invention 2;
Fig. 5 is the scanning electron microscopic picture of the titanium dioxide single crystalline nano-wire array of preparation in the embodiment of the present invention 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, but the ratio of the scope of protection of present invention as the titanium source of reaction unit and reaction, temperature of reaction, reaction times and reacted constituent be not limited to embodiment lifted.
Embodiment 1
(1) be placed on polytetrafluoroethylcontainer container reaction unit after measuring 0.5mL titanous chloride (commercially available, lower with) and the mixing of 40mL n-nonanoic acid respectively, under normal temperature condition, use magnetic stirrer 20 minutes is for subsequent use;
(2) put into after polytetrafluoroethylcontainer container being tightened in thermostat container, setting temperature of reaction is 150 DEG C, and the reaction times is 12 hours, naturally cools to room temperature after completion of the reaction;
(3) after poly-for step (2) polytetrafluoroethylcontainer container being opened, take out film deionized water and washes of absolute alcohol several, and to be placed in thermostat container under 60 DEG C of conditions and to dry 24 hours, as shown in fig. 1, as can be seen from Figure 1 marked crystallographic plane diffraction peak is all corresponding with the titanium dioxide of rutile phase for the XRD figure spectrum of the titanium dioxide single crystalline nano-wire array of preparation.Fig. 2 (a) and 2 (b) are the side-view of titanium dioxide single crystalline nano-wire array respectively and overlook scanning electron microscopic picture, and shown in Fig. 2, the array that the sample of preparation is made up of titanium dioxide nano thread, corresponding thickness is 9 microns.The transmission electron microscope picture of the titanium dioxide single crystalline nano-wire array simultaneously prepared as shown in Figure 3, Fig. 3 (a) and 3 (b) are respectively the transmission electron microscope photo of low power and high power, by seeing in figure that the diameter of nano wire is between 10 ~ 20nm, can find out that the sample of preparation is the titanium dioxide nano thread of monocrystalline by the electron diffraction picture of Fig. 3 (a) upper left illustration of correspondence simultaneously.
Embodiment 2
(1) be placed in glass containers reaction unit after measuring 0.5mL titanous chloride and the mixing of 40mL n-nonanoic acid respectively, this Glass Containers is borosilicate glass, for subsequent use by magnetic stirrer 20 minutes under normal temperature condition;
(2) put into after being tightened by vial in thermostat container, setting temperature of reaction is 90 DEG C, and the reaction times is 12 hours, naturally cools to room temperature after completion of the reaction;
(3) after poly-for step (2) vial being opened, take out film dehydrated alcohol and alcohol washes several, and to be placed in thermostat container under 60 DEG C of conditions and to dry 24 hours, as shown in Figure 4, as can be seen from Figure 4 marked crystallographic plane diffraction peak is all corresponding with the titanium dioxide of rutile phase for the XRD figure spectrum of the titanium dioxide single crystalline nano-wire array of preparation.Shown in Fig. 5 scanning electron microscopic picture, the array that the sample of preparation is made up of titanium dioxide nano thread, corresponding thickness is 3.5 μm.
Embodiment 3
(1) be placed in glass containers reaction unit after measuring 0.5mL titanous chloride and the mixing of 40mL n-nonanoic acid respectively, this Glass Containers is borosilicate glass, for subsequent use by magnetic stirrer 20 minutes under normal temperature condition;
(2) put into after being tightened by vial in thermostat container, setting temperature of reaction is 90 DEG C, and the reaction times is 12 hours, naturally cools to room temperature after completion of the reaction;
(3) after being opened by poly-for step (2) vial, take out film dehydrated alcohol and alcohol washes for several times, and be placed in thermostat container and dry 36 hours under 50 DEG C of conditions, the array that the sample of preparation is made up of titanium dioxide nano thread, corresponding thickness is 3.7 μm.
Embodiment 4
(1) be placed in glass containers reaction unit after measuring 0.5mL titanous chloride and the mixing of 40mL n-nonanoic acid respectively, this Glass Containers is borosilicate glass, for subsequent use by magnetic stirrer 20 minutes under normal temperature condition;
(2) put into after being tightened by vial in thermostat container, setting temperature of reaction is 90 DEG C, and the reaction times is 12 hours, naturally cools to room temperature after completion of the reaction;
(3) after being opened by poly-for step (2) vial, take out film dehydrated alcohol and alcohol washes for several times, and be placed in thermostat container and dry 12 hours under 70 DEG C of conditions, the array that the sample of preparation is made up of titanium dioxide nano thread, corresponding thickness is 3.6 μm.
Embodiment 5
(1) be placed in polytetrafluoroethylcontainer container reaction unit after measuring 0.5mL titanous chloride and the mixing of 40mL n-nonanoic acid respectively, for subsequent use by magnetic stirrer 20 minutes under normal temperature condition;
(2) put into after polytetrafluoroethylcontainer container being tightened in thermostat container, setting temperature of reaction is 90 DEG C, and the reaction times is 12 hours, naturally cools to room temperature after completion of the reaction;
(3) after poly-for step (2) polytetrafluoroethylcontainer container being opened, take out film dehydrated alcohol and alcohol washes for several times, and be placed in thermostat container and dry 24 hours under 60 DEG C of conditions, the sample of synthesis to be thickness the be titanium dioxide nanowire array of 4 μm.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included in protection scope of the present invention.
Claims (7)
1. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure, is characterized in that containing following steps:
(1) get titanium source, n-nonanoic acid stirs and obtain mixed solution;
(2) mixed solution is put into airtight synthesis under normal pressure container, synthesis under normal pressure container is put into thermostat container, regulate temperature of reaction to be 90 ~ 220 DEG C, the reaction times is 1 ~ 100 hour, is cooled to room temperature after reaction;
(3) take out the sample in reaction vessel, after cleaning, oven dry, obtain monocrystalline rutile type nano linear array;
Titanium source described in step (1) is titanous chloride.
2. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 1, is characterized in that: in step (1), the volume ratio of titanium source, n-nonanoic acid is 0.01 ~ 10mL:1 ~ 60mL.
3. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 1, is characterized in that: the time of stirring in step (1) is 5min-1h.
4. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 1, is characterized in that: synthesis under normal pressure container described in step (2) is the sealed vessel that plastics or glass material are made.
5. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 4, it is characterized in that: described plastics are tetrafluoroethylene, polyimide, polybenzoate or polymeric amide, described glass is soda-lime glass or borosilicate glass.
6. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 1, is characterized in that: cleaning described in step (3) is successively washed for several times for adopting deionized water and dehydrated alcohol.
7. the method for low-temperature growth titanium dioxide single crystalline rutile type nano linear array under normal pressure according to claim 1, is characterized in that: temperature when drying in step (3) is 50 ~ 70 DEG C, and drying time is 5 ~ 48h.
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