CN1462725A - CeO2 nano thread and its preparation method - Google Patents
CeO2 nano thread and its preparation method Download PDFInfo
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- CN1462725A CN1462725A CN03131978.5A CN03131978A CN1462725A CN 1462725 A CN1462725 A CN 1462725A CN 03131978 A CN03131978 A CN 03131978A CN 1462725 A CN1462725 A CN 1462725A
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- 238000002360 preparation method Methods 0.000 title claims description 16
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 title abstract 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 13
- 239000012798 spherical particle Substances 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical group [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000006713 insertion reaction Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 5
- 239000010436 fluorite Substances 0.000 abstract 1
- 239000002121 nanofiber Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 9
- 239000002086 nanomaterial Substances 0.000 description 6
- 239000002070 nanowire Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000000608 laser ablation Methods 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000004098 selected area electron diffraction Methods 0.000 description 3
- 229910000314 transition metal oxide Inorganic materials 0.000 description 3
- 241000237502 Ostreidae Species 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 235000020636 oyster Nutrition 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- MFYSUUPKMDJYPF-UHFFFAOYSA-N 2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-n-phenylbutanamide Chemical compound C=1C=CC=CC=1NC(=O)C(C(=O)C)N=NC1=CC=C(C)C=C1[N+]([O-])=O MFYSUUPKMDJYPF-UHFFFAOYSA-N 0.000 description 1
- AKXKFZDCRYJKTF-UHFFFAOYSA-N 3-Hydroxypropionaldehyde Chemical compound OCCC=O AKXKFZDCRYJKTF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229940040526 anhydrous sodium acetate Drugs 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- HZVOZRGWRWCICA-UHFFFAOYSA-N methanediyl Chemical compound [CH2] HZVOZRGWRWCICA-UHFFFAOYSA-N 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002127 nanobelt Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 229960004249 sodium acetate Drugs 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005287 template synthesis Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A CeO2 nanofibre is disclosed, which has 4-5 nm of diameter, 100-200 nm of length, cubical fluorspar structure and higher purity. Its preparing process is also disclosed.
Description
One, technical field
The present invention relates to the cerium oxide nano silk.
Two, background technology
Transition metal oxide is the important semiconductor material of a class, and they are widely used in fields such as magnetic-based storage media, solar energy converting, electron device and catalysis.In recent years, transition metal oxide nano-particles has caused the extensive concern of scientific circles because of it has big surface volume than, high activity, special electric property and unique optical property.CeO
2Be a kind of important rare-earth transition metal oxide material, it has a series of special nature, and has a wide range of applications in numerous areas.CeO
2Have the good temperature resistance energy, all keep stable fluorite structure in the temperature range from room temperature to its fusing point.And owing to have good structural compatibility and extremely strong ultraviolet absorption characteristic between it and the silicon, it is causing concern more and more widely.CeO
2Can be used as a kind of additive and be incorporated into some photochromicss of protection in the glass (2～4% content); it also is used to protect metal not to be corroded, to serve as catalyst for oxidation reaction; or as the counter electrode of electrochromic equipment [referring to (a) A.Henglein; Chem.Rev.1989,89,1861. (b) A.Agfeldt; M.Gratzel; Chem.Rev.1995,95,49.].It also is to be widely used as oxygen ion conductor in the equipment such as solid oxygen fuel battery, electrolyzer, oxygen pump or normal pressure oxygen monitoring device [referring to (a) A.Henglein, Chem.Rev.1989,89 now, 1861. (b) A.Agfeldt, M.Gratzel, Chem.Rev.1995,95,49.].In addition, CeO
2Also in stable extensive integrated capacitor equipment, play the part of important role, and can be used as stable cushioning layer material between high temperature superconducting materia and silicon base [referring to M.Hirano, E.Kato, J.Am.Ceram.Soc.1996,79,777.].Preparation CeO
2The research of superfine powdery material has obtained development rapidly in recent years, new preparation method emerges in an endless stream, this is synthetic comprising hydro-thermal, the thermolysis of reverse micelle path, coprecipitation method, mandatory hydrolysis method, electrochemical method, oxalate, urea or six methylene radical tetramines impel homogeneous hydrolysis method, hydrazine hydrate reaction method, solvent-thermal method and room temperature solid state reaction etc.Recently, Masashi etc. has reported a preparation CeO
2The colloidal novel method is reacted metallic cerium and 2-formyl ethanol and can be prepared CeO under 200-300 ℃ temperature
2The clarifying colloidal sol of nanoparticle.People have also been developed the CeO of multiple preparation nanoscale
2The solid film material, this is comprising Metalorganic Chemical Vapor Deposition (MOCVD), electrodip process and sputter decomposition method etc.
In recent years, monodimension nanometer material has caused the extensive concern of scientific circles, because they have earth shaking meaning [referring to (a) C.M.Lieber at basic scientific research or in the technology application facet, SolidState Commun.1998,107,607. (b) J.Hu, T.W.Odom, C.M.Lieber, Acc.Chem.Res.1999,32,435. (c) P.Yang, Y.Wu, R.Fan, Inter.J.Nanosci.2002,1,1. (d) G.R.Patzke, F.Krumeich, R.Nesper, Angew.Chem.Int.Ed.2002,41,2446.].One-dimensional nano structure material, comprise nano thread, nanometer rod, nano wire, nano belt and nanotube etc., not only provide an ideal model with the size of material and the relation of dimension, and in the structure of nanoscale electronics and photoelectric device, played the part of extremely important role for we study electric transmission, mechanical property etc.Dimension has great influence to the performance of material, just exist very big difference [referring to (a) C.M.Lieber, Solid State Commun.1998,107 such as electronics at interaction mode in three-dimensional, the two peacekeeping one-dimentional structures, 607. (b) J.Hu, T.W.Odom, C.M.Lieber, Acc.Chem.Res.1999,32,435. (c) P.Yang, Y.Wu, R.Fan, Inter.J.Nanosci.2002,1,1. (d) G.R.Patzke, F.Krumeich, R.Nesper, Angew.Chem.Int.Ed.2002,41,2446.].To the research of the research of low-dimension nano material, particularly one dimension or quasi-one-dimensional nanometer material, be considered to study the basis of other low-dimensional materials.Many characteristic properties that monodimension nanometer material had are found in succession and are reported, this comprising superpower mechanical tenacity [referring to J.Voit, Rev.Rrog.Phys.1994,57,977.], high fluorescence efficiency [referring to: E.W.Wong, P.E.Sheedan, C.M.Lieber, Science 1997,277,1971.], the enhancing of thermoelectricity capability [referring to: X.F.Duan, Y.Huang, Y.Cui, J.F.Wang, C.M.Lieber, Nature 2001,409,66.] and the reduction of Laser emission threshold value [referring to: Z.Zhang, X.Sun, M.S.Dresselhaus, J.Y.Ying, J.Heremans, Phys.Rev.B 2000,61, and 4850.] etc.
The preparation of one dimension semiconductor nano material and the research of assembling have obtained rapidly development in the past few years, and new method emerges in an endless stream, only enumerate here that several application surfaces are wide, influence is comparatively far-reaching and develop comparatively sophisticated method.(1) laser ablation method (Laser Ablation Method); (2) solution-liquid-solid (Solution-Liquid-Solid) growth method; (3) molecular beam epitaxy (Molecular Beam Epitaxy); (4) template synthesis method (Tamplate Method); (5) solvent thermal process (Solvothermal Method).The laser ablation legal system is equipped with semiconductor nanowires the earliest by Lieber and co-worker's report thereof.The process of growth of nano wire is followed the growth model of gas-liquid-solid (Vapro-Liquid-Solid), can select appropriate catalyst to come catalytic nanometer crystalline one-dimensional growth according to phasor.Solution-liquid-solid growth method is at first created in the process of preparation III-V compounds of group (InP, InAs, GaAs) by Buhro seminar.The advantage of this method is to prepare the one dimension III-V family semiconductor nano material of crystalline state under lower temperature.Its growth mechanism and traditional gas-liquid-solid mechanism have very big similarity.The physicist then is more prone to prepare semiconductor nanowires with molecular beam epitaxy and relevant method thereof.These methods prepare nano wire operates easily, suitable especially for the relation of studying Substance Properties and size, pattern.Recently, Zhang etc. utilizes this method to prepare very long CdTe nano wire.Solvent thermal method synthesizing one-dimensional nano material has obtained development rapidly in recent years, and Qian Yitai seminar and Xia Younan seminar have carried out the fruitful work of system in this field.This method mainly is to place the reactor of sealing to react under higher relatively temperature and pressure reactant, thereby promotes the crystalline one-dimensional growth.The application of template method in the preparation of monodimension nanometer material is very extensive.Porous-film is one of the most frequently used template.Porous-film commonly used has two classes: the one, and " track etching " polymeric film (" Track-etch " Polymeric Membrane); The 2nd, porous alumina (Porous Alumina).New mano-porous material constantly is developed, such as nano pore array glass and molecular sieve etc.Ozin has done discussion to various energy as the solid material with nano-pore structure of template.In recent years, prepare monodimension nanometer material with carbon nanotube and dna molecular as template and also obtained great progress.
The Gedanken seminar and the inventor's seminar prepares CeO with the sonochemistry method in succession
2Nano spherical particle.But the relevant CeO of Shang Weijian
2The report of nano thread.
Three, summary of the invention
The CeO that the purpose of this invention is to provide one dimension Nano structure
2Nano thread.
Technical scheme of the present invention is as follows:
A kind of CeO
2Nano thread, it is that diameter is 3～5nm, length is the CeO of 100～200nm
2Nano thread.
Above-mentioned CeO
2Nano thread is cube CeO of phase fluorite structure
2
The above-mentioned CeO of a kind of preparation
2The method of nano thread, it is with CeO
2The nano spherical particle powder is added in the NaOH solution that concentration is 5～12M, CeO
2The proportional range of nano spherical particle powder and sodium hydroxide solution amount can be at 20mg: 50mL to 50mg: between the 50mL, at room temperature, with ultrasonic wave radioreaction thing solution, carry out the sonochemistry reaction, reacted 90～240 minutes, and can will react in the direct insertion reaction thing of the ultrasonic probe solution, in the reaction, reaction mixture heats up naturally, general temperature of charge can rise to about 343K, after reaction finishes, has a large amount of oyster white flockss to produce, be cooled to room temperature, centrifugation, precipitation distilled water, ethanol and acetone wash successively, place room temperature and air to dry naturally the throw out of gained, obtain the khaki color powder, be CeO of the present invention
2Nano thread.
CeO of the present invention
2Nano thread is through XRD determining, and the result shows that it is pure cube phase fluorite structure CeO
2The position at peak and intensity all be complementary [referring to Joint Committee on Powder DiffractionStandards (JCPDS), File No 4-0593.] with literature value.Do not find the dephasign peak, the purity that shows product is than higher.By the TEM photo, observe CeO of the present invention
2The nano thread diameter is 3～5nm, and length is 100～200nm.
Four, description of drawings
Fig. 1 is CeO of the present invention
2The XRD figure of nano thread, a is CeO among the figure
2The XRD figure of nanometer ball; B is CeO
2The XRD figure of nano thread.
Fig. 2 is CeO of the present invention
2The TEM photo of nano thread and corresponding selected area electron diffraction (SAED) pattern.
Five, embodiment
Embodiment 1.CeO
2The preparation of nano spherical particle prepares CeO by the inventor's method
2Nano spherical particle: in the round-bottomed flask of 100mL with Ce (SO
4)
2Join finally to be made in the distilled water with sodium acetate, anhydrous and contain 0.02mol/L Ce (SO
4)
2, the 20.0g/L sodium-acetate solution 100mL.This solution presents transparent light yellow, and the pH value is about 6.0.Place ultrasonic radiation under the room temperature normal pressure, to carry out sonochemistry reaction 30min this solution.The sonochemistry reaction is with ultrasonic probe (Xin Zhi company, 1.2cm diameter, Ti head, 20KHz, power 100W/cm
2) directly insertion reaction thing liquid carry out.In reaction process, because heating/cooling device not, temperature of charge can rise to some extent, reaches about 343K when reaction finishes.After reaction finishes, there are a large amount of light-yellow precipitate to generate.To be cooledly carry out centrifugation later on to room temperature (10000rounds/min 5min), with distilled water, ethanol and acetone washing precipitate successively, places room temperature and air to dry naturally resulting throw out then.The product that finally obtains is lurid powder.Product is cube CeO of phase fluorite structure
2The nano spherical particle powder, the size of particle is between 2 to 3nm.
Embodiment 2.CeO
2The preparation of nano thread
Take by weighing the above-mentioned prepared CeO of about 0.02g
2The nano spherical particle powder joins in the 50mL 10MNaOH solution, places ultrasonic radiation to carry out sonochemistry reaction 120min under the room temperature normal pressure this solution.The sonochemistry reaction is with ultrasonic probe (Xin Zhi company, 1.2cm diameter, Ti head, 20KHz, power 100W/cm
2) directly insertion reaction thing liquid carry out.In reaction process, because heating/cooling device not, temperature of charge can rise to some extent, reaches about 343K when reaction finishes.After reaction finishes, there are a large amount of oyster white flockss to produce.To be cooledly carry out centrifugation later on to room temperature (10000rounds/min 5min), with distilled water, ethanol and acetone washing precipitate successively, places room temperature and air to dry naturally resulting throw out then.The product that finally obtains is khaki powder.Powder X-ray RD result (seeing accompanying drawing 1) shows that this product is the CeO of pure cube phase fluorite structure
2The position at peak and intensity all are complementary with literature value [JointCommittee on Powder Diffraction Standards (JCPDS), File No 4-0593.].Do not find the dephasign peak, the purity that shows product is than higher.Observe the CeO of preparation like this by TEM photo (seeing accompanying drawing 2)
2Be that diameter is that 3-5nm, length are the nano thread of 100-200nm.And can confirm further that by the selected area electron diffraction pattern these nano threads are cube phase CeO
2
Embodiment 3.CeO
2The preparation of nano thread
Step by embodiment 2 prepares CeO
2Nano thread, but the reaction times extend to 240min, obtain identical result.
Embodiment 4.CeO
2The preparation of nano thread
Step by embodiment 2 prepares CeO
2Nano thread, but NaOH solution 20mL, the sonochemistry reaction times changes 90min into, obtains similar result.
Claims (5)
1. CeO
2Nano thread is characterized in that it is that diameter is 4～5nm, and length is the CeO of 100～200nm
2Nano thread.
2. CeO according to claim 1
2Nano thread is characterized in that it is cube CeO of phase fluorite structure
2Nano thread.
3. one kind prepares above-mentioned CeO
2The method of nano thread is characterized in that: with CeO
2The nano spherical particle powder is added in the NaOH solution that concentration is 5～12M, at room temperature, and with ultrasonic wave radioreaction thing solution, carry out the sonochemistry reaction, reacted 90-240 minute, in the reaction, reaction mixture heats up naturally, reaction is cooled to room temperature after finishing, and centrifugation goes out precipitation, precipitation is washed successively with distilled water, ethanol and acetone, place room temperature and air to dry naturally the throw out of gained, obtain the khaki color powder, be CeO of the present invention
2Nano thread.
4. preparation CeO according to claim 3
2The method of nano thread is characterized in that CeO
2The proportional range of nano spherical particle powder and sodium hydroxide solution amount is between the 50mg:50mL at 20mg:50mL.
5. preparation CeO according to claim 3
2The method of nano thread is characterized in that being with in the direct insertion reaction thing of the ultrasonic probe solution with ultrasonic wave radioreaction thing solution.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120420A1 (en) * | 2010-03-31 | 2011-10-06 | 清华大学 | Metal oxide nanofiber and preparation method thereof |
| US9829463B2 (en) | 2010-03-31 | 2017-11-28 | Toyota Jidosha Kabushiki Kaisha | Method for producing oxygen sensor |
| CN113067010A (en) * | 2021-03-22 | 2021-07-02 | 电子科技大学 | Fuel cell supported by nanowires driven by biological gas production |
-
2003
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120420A1 (en) * | 2010-03-31 | 2011-10-06 | 清华大学 | Metal oxide nanofiber and preparation method thereof |
| CN103003477A (en) * | 2010-03-31 | 2013-03-27 | 清华大学 | Metal oxide nanofiber and preparation method thereof |
| US9564653B2 (en) | 2010-03-31 | 2017-02-07 | Toyota Jidosha Kabushiki Kaisha | Method for producing fuel cell including nanofibers of metal oxide |
| US9829463B2 (en) | 2010-03-31 | 2017-11-28 | Toyota Jidosha Kabushiki Kaisha | Method for producing oxygen sensor |
| CN113067010A (en) * | 2021-03-22 | 2021-07-02 | 电子科技大学 | Fuel cell supported by nanowires driven by biological gas production |
| CN113067010B (en) * | 2021-03-22 | 2022-05-17 | 电子科技大学 | Fuel cell supported by nanowires driven by biological gas production |
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