CN1287099A - Preparation of nanometer-level titania through microwave heating of titanium solution - Google Patents
Preparation of nanometer-level titania through microwave heating of titanium solution Download PDFInfo
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- CN1287099A CN1287099A CN 00129873 CN00129873A CN1287099A CN 1287099 A CN1287099 A CN 1287099A CN 00129873 CN00129873 CN 00129873 CN 00129873 A CN00129873 A CN 00129873A CN 1287099 A CN1287099 A CN 1287099A
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- titanium oxide
- nano titanium
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Abstract
The preparation of the present invention features that titanium solution is made to hydrolyze through microwave heating and neutralized with alkali, and after separation, washing, drying and calcination, nanometer-level titania powder with optional size distribution in 10-100 nm may be obtained. The titania powder prepared through the said process has homogeneous size distribution and regular shape. The technological process is simple, easy in control and suitable for industrial production.
Description
The present invention relates to a kind of method for preparing nano titanium oxide.
Because nano titanium oxide has photocatalysis characteristic efficiently, its harmful organic substance in the environment of can not only degrading fully, toxic gases such as the oxynitrides of lower concentration and sulfocompound in the oxidation removal atmosphere, but also have effects such as sterilization, deodorizing, can purify, improve our living environment.Simultaneously, nano titanium oxide also has the transparency and shielding ultraviolet rays function, also is widely used at aspects such as sun-proof skin care, plastic membrane product, woodenware protection and transparent durable finish paints.Especially latter stage eighties, after the nano titanium oxide that can produce tempting " changeable colors along with angle " effect successfully was applied to limo, nano titanium oxide had caused worldwide common concern, obtains many gratifying achievements.And formed hi-tech nano material industry, receive good economic benefit and social benefit.At present, the method for preparing nano titanium oxide mainly contains: by pyroreaction, have corrodibility, facility investment height, oxyhydrogen flame flame hydrolysis, TiCl that technical difficulty is big
4Vapour phase oxidation process, titan-alkoxide gas phase hydrolysis method and the liquid phase water solution that the production cycle is long, productive rate is low prepare nano titanium oxide with these methods, and difficulty is big, cost is high, has seriously restricted the application of nano titanium oxide.
The objective of the invention is to seek the preparation nano titanium oxide method that a kind of technological process is simple, control convenience, low production cost.
The advantage of the inventive method is at normal temperatures and pressures, uses simple technology, and cheap raw material has been prepared the particle shape rule, the uniform nano titanium oxide of size distribution.
The present invention is that at first to prepare concentration be 1 * 10
-3Ti (the SO of～1 * 10mol/L
4)
2Or TiOSO
4, TiCl
4Deng titaniferous solution, become white opacity suspension with microwave even heating to limpid titanium solution then.After treating the abundant hydrolysis of titanium, use NH
3H
2O or NaOH are transferred to 3～8 with the pH value.After isolating throw out,, between 400～1200 ℃, calcined 1～10 hour through washing, drying.According to different processing condition, can obtain the class spherical nano TiO 2 powder of arbitrary size-grade distribution between 10～100nm.
The wavelength of the microwave of the inventive method heating usefulness is at (frequency of microwave is between 300MHz～300GHz) between 1m～1mm.During with the microwave even heating, do not stir titaniferous solution.
Embodiment one:
Getting concentration is the Ti (SO of 0.2mol/L
4)
2Aqueous solution 1L, the frequency that places microwave is that the microwave oven of 2.45GHz heats.After treating that limpid titanium solution becomes muddy suspension fully, its pH value is transferred to 5.0 with the NaOH solution of 1mol/L.Through centrifugal the white depositions that forms is separated with mother liquor, again with deionized water washing sediment to using BaCl
2Check no SO
4 2-Till the ion, dry in the time of 80 ℃ with vacuum drying oven then,, can obtain the class spherical nano TiO 2 powder of particle diameter between 15～20nm through 500 ℃ of calcinings 2 hours.
Claims (6)
1. a method for preparing nano titanium oxide is characterized in that concentration is 1 * 10
-3The titaniferous solution of～1 * 10mol/L makes the titanium solution hydrolysis by the microwave even heating, treat the abundant hydrolysis of titanium after, regulate pH value to 3～8, isolated throw out, through washing, dry, calcine, make nano titanium oxide.
2. according to the right 1 described method for preparing nano titanium oxide, it is characterized in that titaniferous solution can be: Ti (SO
4)
2, TiOSO
4, TiCl
4Deng.
3. according to the right 1 described method for preparing nano titanium oxide, it is characterized in that heating the wavelength of usefulness microwave at (microwave frequency is between 300MHz～300GHz) between 1m～1mm.
4. according to the right 1 described method for preparing nano titanium oxide, when it is characterized in that with the microwave even heating, titaniferous solution does not stir.
5. according to the right 1 described method for preparing nano titanium oxide, it is characterized in that the titaniferous solution complete hydrolysis after, limpid solution has become muddy suspension.
6. according to the right 1 described method for preparing nano titanium oxide, it is characterized in that particle diameter with the nano-titania particle of this method preparation is between 10～100nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129873 CN1287099A (en) | 2000-10-24 | 2000-10-24 | Preparation of nanometer-level titania through microwave heating of titanium solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129873 CN1287099A (en) | 2000-10-24 | 2000-10-24 | Preparation of nanometer-level titania through microwave heating of titanium solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1287099A true CN1287099A (en) | 2001-03-14 |
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ID=4593809
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|---|---|---|---|
| CN 00129873 Pending CN1287099A (en) | 2000-10-24 | 2000-10-24 | Preparation of nanometer-level titania through microwave heating of titanium solution |
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| CN (1) | CN1287099A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003031664A1 (en) * | 2001-10-12 | 2003-04-17 | Rmg Services Pty Ltd | Treatment of a wide range of titanium compounds |
| WO2008145057A1 (en) * | 2007-05-26 | 2008-12-04 | Wenbin Miao | A method for producing nanometer grade titania |
| CN105502483A (en) * | 2015-07-08 | 2016-04-20 | 四川大学 | Microwave-assisted preparation method for rutile titanium dioxide |
| CN105727919A (en) * | 2016-02-22 | 2016-07-06 | 中国科学院过程工程研究所 | Titanium dioxide nanometer catalyst and preparation and application thereof |
| CN107540013A (en) * | 2016-06-27 | 2018-01-05 | 中国科学院金属研究所 | A kind of preparation method for the titania nanoparticles that high visible absorbs |
-
2000
- 2000-10-24 CN CN 00129873 patent/CN1287099A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003031664A1 (en) * | 2001-10-12 | 2003-04-17 | Rmg Services Pty Ltd | Treatment of a wide range of titanium compounds |
| WO2008145057A1 (en) * | 2007-05-26 | 2008-12-04 | Wenbin Miao | A method for producing nanometer grade titania |
| CN105502483A (en) * | 2015-07-08 | 2016-04-20 | 四川大学 | Microwave-assisted preparation method for rutile titanium dioxide |
| CN105727919A (en) * | 2016-02-22 | 2016-07-06 | 中国科学院过程工程研究所 | Titanium dioxide nanometer catalyst and preparation and application thereof |
| CN107540013A (en) * | 2016-06-27 | 2018-01-05 | 中国科学院金属研究所 | A kind of preparation method for the titania nanoparticles that high visible absorbs |
| CN107540013B (en) * | 2016-06-27 | 2019-06-07 | 中国科学院金属研究所 | A kind of preparation method for the titania nanoparticles that high visible absorbs |
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