CN1559983A - Process of preparing magnesium boron oxygen nano thread - Google Patents
Process of preparing magnesium boron oxygen nano thread Download PDFInfo
- Publication number
- CN1559983A CN1559983A CNA2004100164953A CN200410016495A CN1559983A CN 1559983 A CN1559983 A CN 1559983A CN A2004100164953 A CNA2004100164953 A CN A2004100164953A CN 200410016495 A CN200410016495 A CN 200410016495A CN 1559983 A CN1559983 A CN 1559983A
- Authority
- CN
- China
- Prior art keywords
- nano thread
- boron oxygen
- magnesium
- magnesium boron
- boric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- LUKSFLJCVRDCRV-UHFFFAOYSA-N [O].[Mg].[B] Chemical compound [O].[Mg].[B] LUKSFLJCVRDCRV-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 24
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims abstract description 16
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004327 boric acid Substances 0.000 claims abstract description 9
- 239000002070 nanowire Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 4
- 235000012054 meals Nutrition 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 6
- 238000003980 solgel method Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a method to prepare a magnesium boron oxygen nano thread, adopting a sol-gel method, and the steps as follows: 1) prepare a solution by using 99% analytical magnesium nitrate, boric acid and citric acid in mole ratio of 1 to 1 to 1 - 1 to 10 to 10, drying at 10-500 deg.C so as to obtain a gelatinous product; 2) baking the product at 100 deg.C-1300 deg.C for 5 minutes-200 hours, and generating a white powdery substance; 3) dissolving the white powdery substance in water, centrifuging and eliminating soluble B2O3, and making the magnesium boron oxygen (MgB4O7) nano thread. It has simple process, easy to form volume-production, and the made nano thread has excellent performance. By organically combining the nano thread with other material blocks, it is hopeful to improve the mechanical property of ceramic material, and enhance the flexibility and strength of ceramic material.
Description
Technical field
The present invention relates to the preparation method of magnesium boron oxygen nano thread.
Background technology
Because monodimension nanometer material has character such as unique mechanical, electricity, optics, magnetics, so exist the wide industrial application prospect, becomes a focus of recent investigation of materials.The 1-dimention nano silk has the mechanical property of many uniquenesses, has caused great concern.Compare with the body material, whisker is because the defective of unit length is few, so engineering properties strengthens greatly.Compare with whisker, the mechanical properties of monodimension nanometer material also increases substantially.The mechanical property of the whisker that increases the material SiC that threads commonly used does not reach theoretical value far away.
Magnesium boron oxygen (MgB
4O
7) be ceramic material preferably, or a kind of hot fluorescent material.In Materials with High Strength and electron ceramic material, has considerable application prospect.The method of at present synthetic magnesium boron oxygen nano wire generally adopts thermal evaporation (MgO and B
2O
3Evaporate after mixing), or catalyst method.But there are a lot of weak points in these methods, and are less such as the amount that thermal evaporation is produced, and need complex equipment, and the impurity that catalyst method is produced is more, is difficult for removing.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of technology, prepares in a large number magnesium boron oxygen (MgB
4O
7) method of nano wire.
The present invention prepares magnesium boron oxygen (MgB
4O
7) method of nano wire, employing be sol-gel method, step is as follows:
1) with 99% analytically pure magnesium nitrate, 99% analytically pure boric acid and 99% analytically pure citric acid, magnesium nitrate in molar ratio: boric acid: the ratio wiring solution-forming of citric acid=1: 1: 1 to 1: 10: 10 10 ℃～500 ℃ oven dry down, obtains the gel product;
2) with the gel product 100 ℃～1300 ℃ roastings 5 minutes to 200 hours, generate the meal of white; Along with the prolongation of roasting time, the crystallization of nano thread will be better.
3) white powder obtained above is water-soluble, centrifugally remove soluble B
2O
3, make MgB
4O
7One of nanometer.
The present invention can be used for controlling the diameter of nano wire by changing the ratio of magnesium nitrate, boric acid, citric acid, and such as the increase along with the boric acid amount, the diameter of nano wire will increase.
The inventive method technology is simple, easily forms and produces the magnesium boron oxygen nano wire (MgB that makes in enormous quantities
4O
7) function admirable, magnesium boron oxygen nano wire and other block materials that makes combined, be expected to improve the mechanical property of ceramic material, strengthen toughness and the intensity of ceramic material.
Description of drawings
Fig. 1 is the magnesium boron oxygen (MgB that the present invention makes
4O
7) the XRD figure of nano wire;
Fig. 2 is the magnesium boron oxygen (MgB that the present invention makes
4O
7) the SEM figure of nano wire, wherein, figure (a) be top view, scheming (b) is side view;
Fig. 3 is the magnesium boron oxygen (MgB that the present invention makes
4O
7) the TEM figure of nano wire, the upper right corner is its diffraction pattern.
Embodiment
Embodiment 1:
With magnesium nitrate (Mg (NO
3)
2Analyze pure 99%), boric acid (H
3BO
3Analyze pure 99%) and citric acid (C
6H
8O
7H
2O analyzes pure 99%) magnesium nitrate in molar ratio: boric acid: citric acid=1: 2: 5 wiring solution-forming, make gel 150 ℃ of lower oven dry, then 750 ℃ of lower roastings 4 hours, generate the powder of white, white powder obtained above is water-soluble, centrifugally remove soluble B
2O
3Impurity obtains MgB
4O
7Nano wire.
To dissolve B
2O
3MgB
4O
7Nano wire detects (seeing Fig. 1) with XRD, and test shows that along with the prolongation of roasting time, the crystallization of nano wire will be better.With ESEM (seeing Fig. 2) and transmission electron microscope observing (seeing Fig. 3).The result shows that the magnesium boron oxygen nano thread diameter that generates with sol-gel method is more even, and about 500nm, length is micron order, substantially all is monocrystalline, belongs to rhombic system.And nano wire can spontaneously be orientated to the array growth at tens microns in hundreds of micron zone.
Claims (1)
1. the method for preparing the magnesium boron oxygen nano thread is characterized in that may further comprise the steps:
1) with 99% analytically pure magnesium nitrate, 99% analytically pure boric acid and 99% analytically pure citric acid, magnesium nitrate in molar ratio: boric acid: the ratio wiring solution-forming of citric acid=1: 1: 1 to 1: 10: 10 10 ℃～500 ℃ oven dry down, obtains the gel product;
2) with the gel product 100 ℃～1300 ℃ roastings 5 minutes to 200 hours, generate the meal of white;
3) white powder obtained above is water-soluble, centrifugally remove soluble B
2O
3, make MgB
4O
7Nano wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016495 CN1234648C (en) | 2004-02-20 | 2004-02-20 | Process of preparing magnesium boron oxygen nano thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016495 CN1234648C (en) | 2004-02-20 | 2004-02-20 | Process of preparing magnesium boron oxygen nano thread |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559983A true CN1559983A (en) | 2005-01-05 |
| CN1234648C CN1234648C (en) | 2006-01-04 |
Family
ID=34440506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016495 Expired - Fee Related CN1234648C (en) | 2004-02-20 | 2004-02-20 | Process of preparing magnesium boron oxygen nano thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234648C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301216C (en) * | 2005-04-11 | 2007-02-21 | 北京科技大学 | Method for preparing calcium carbonate nano wire |
| CN101845668B (en) * | 2010-02-07 | 2012-05-16 | 浙江工业大学 | Preparation method of nano nickel borate whisker |
| CN102504809A (en) * | 2011-09-26 | 2012-06-20 | 西南科技大学 | Preparation method for high-temperature high-pressure photoelectric sensing material SrB4O7:Sm<2+> |
-
2004
- 2004-02-20 CN CN 200410016495 patent/CN1234648C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301216C (en) * | 2005-04-11 | 2007-02-21 | 北京科技大学 | Method for preparing calcium carbonate nano wire |
| CN101845668B (en) * | 2010-02-07 | 2012-05-16 | 浙江工业大学 | Preparation method of nano nickel borate whisker |
| CN102504809A (en) * | 2011-09-26 | 2012-06-20 | 西南科技大学 | Preparation method for high-temperature high-pressure photoelectric sensing material SrB4O7:Sm<2+> |
| CN102504809B (en) * | 2011-09-26 | 2014-05-28 | 西南科技大学 | Preparation method for high-temperature high-pressure photoelectric sensing material SrB4O7:Sm<2+> |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234648C (en) | 2006-01-04 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060104 Termination date: 20130220 |