CN1562768A - Sol of nano titania and preparation method - Google Patents
Sol of nano titania and preparation method Download PDFInfo
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- CN1562768A CN1562768A CN 200410029904 CN200410029904A CN1562768A CN 1562768 A CN1562768 A CN 1562768A CN 200410029904 CN200410029904 CN 200410029904 CN 200410029904 A CN200410029904 A CN 200410029904A CN 1562768 A CN1562768 A CN 1562768A
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Abstract
The prepn. steps are: creating amorphous neutral titanium oxide pulp material by chemical method, washing chlorion to less than 50 ppm by deionized water, proceeding ultrasonic dispersion to the pulp after adding lanthanum nitrate or zinc ferrite then senting the pulp into reaction boiler, increasing temp. to 80-200 deg.C, taking it out after being crystallized 8-72 hours, the nanometre titanium dioxide sol with photochemical function is produced. The sol has good water-solubility, 99.9 percent bactericidal ratio with 0.8 percent density and on condition of natural lighting.
Description
Technical field:
The invention belongs to anti-biotic material and preparation method thereof, particularly a kind of nano titanic oxide sol and preparation method thereof with nanocrystalline structure.
Background technology:
Existing nano titanic oxide sol and its production and application mainly contains following several:
1, prepare nanoscale through chemical method or physical method, the nano-titanium oxide powder of specific crystal formation is applied to as mechanicalss such as glass, pottery, plastics in the method for burning plating through high temperature;
2, adopt electrochemical method that directly fixing burning of the titanium dioxide of nanocrystalline structure is plated on the selected metal, generate the film of specific crystal formation again through excess temperature control;
3, adopt the method for chemistry to make the colloidal sol that contains organic solvent.It is material that this method adopts the nano-titanium oxide powder more, adds organic solvents such as dispersion agent, emulsifying agent and makes colloidal sol or the coating with photo-catalysis function.
More than 3 kinds of methods certain use limitation is arranged.Can only be confined to industrial work in-process as 1,2 use, and need be, the production technique of original material is adjusted accordingly or changes according to the situation of using material.The 3rd method is mainly used in coating industry, as can be made into antibiotic paint etc.The colloidal sol that this method is produced is because of having added organic solvents such as improving dispersion agent with sticking power, tamanori, and organic solvent can wrap up nano oxidized titanium particle, makes it can obviously fall end photochemical catalysis effect.And the product that this method is produced can not reach actual nontoxic level, can not be used for industries such as medical treatment, medicine, food.
Summary of the invention:
The purpose of this invention is to provide a kind of nano titanic oxide sol and preparation method thereof with photo-catalysis function.
Nano titanic oxide sol provided by the present invention comprises nano-titania particle and solvent; Wherein nano-titania particle content is 0.1%～2% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 3～100 nanometers.
Solvent used in the present invention can be a water.When solvent was water, wherein nano-titania particle content was 0.1%～2% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 10～20 nanometers;
Nano titanic oxide sol provided by the present invention, titanium dioxide nano-particle crystal formation wherein are anatase titanium dioxide or rutile-type or their mixing crystal formation.Mix up in this colloidal sol iron or copper or silver or platinum or its combination or lanthanum ion are arranged; Concentration is 10-500ppm, and this colloidal sol is neutral, Ph value: between 6～8; This colloidal sol has golden colour lustre for for pearl opal or light yellow liquid, and concentration is at 0.1%-2%.
Aforesaid nano titanic oxide sol, its preparation method is: at first generate unformed neutral titania slurry with chemical method; Through deionized water chlorion is washed to 50ppm the method that the method for washing can adopt whizzer or film processing or electrophoresis to desalt again; After adding lanthanum nitrate or zinc ferrite, slurry is carried out ultra-sonic dispersion then; At last the slurry behind the ultra-sonic dispersion is put into reactor, heating rises to 80 ℃～200 ℃ and takes out after crystallization 8-72 hour, promptly obtains to have the nano titanic oxide sol of photo-catalysis function.
The colloidal sol that the present invention produces has good water-solubility, as clear as crystal no deposited phenomenon.Photocatalytic activity is very high, has under the natural light condition in 0.8% concentration, and sterilizing rate is 99.9%.Under the situation that does not change production technique, can be to plastics, pottery, materials such as glass spraying film forming makes it to become a kind of functional materials.Industrial output rate height of the present invention, reduced investment is produced simply, can be widely used in industries such as antibiotic, environmental protection, automatically cleaning material, building material.
Embodiment:
Provide embodiments of the invention and preparation method below:
Embodiment 1:
Take by weighing 6 gram sodium hydroxide, dissolve in 300 ml distilled waters, stirring and dissolving is with 7.1 gram TiCl
4Slowly add hydrolysis in the aqueous sodium hydroxide solution, use centrifugal (membrane sepn or electrophoresis desalination) method to make Cl then
-Content is lower than 50ppm.With the titanium hydroxide colloidal sol of sloughing salt crystallization 8 hours under 200 ℃ of conditions, promptly get nanometer anatase titania colloidal sol.
Embodiment 2:
Take by weighing 6 gram sodium hydroxide, dissolve in 300 ml distilled waters, stirring and dissolving is with 9.0 gram Ti (SO
4)
2Slowly add hydrolysis in the aqueous sodium hydroxide solution, use centrifugal (membrane sepn or electrophoresis desalination) method to make SO then
4 2-Content is lower than 50ppm.With the titanium hydroxide colloidal sol of sloughing salt crystallization 8 hours under 200 ℃ of conditions, promptly get nanometer anatase titania colloidal sol.
Embodiment 3:
Measure 10.2mL ammoniacal liquor (25%), adding distilled water to volume is 300 milliliters, with 7.1 gram TiCl
4Slowly add in the ammoniacal liquor and stir, hydrolysis uses centrifugal (membrane sepn or electrophoresis desalination) method to make Cl then
-Content is lower than 50ppm.With the titanium hydroxide colloidal sol of sloughing salt crystallization 8 hours under 80 ℃ of-200 ℃ of conditions, promptly get nanometer anatase titania colloidal sol.
The nano titanic oxide sol that the embodiment of the invention provided comprises nano-titania particle and solvent; Wherein nano-titania particle content is 0.1%～5% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 3～100 nanometers.
The employed solvent of the embodiment of the invention is a water.Wherein nano-titania particle content is 0.1%～2% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 10～20 nanometers
The nano titanic oxide sol that the embodiment of the invention provided, titanium dioxide nano-particle crystal formation wherein is an anatase titanium dioxide.Mix up in this colloidal sol iron or copper or silver or platinum or its combination or lanthanum ion are arranged; This colloidal sol is neutral, Ph value: between 6～8; This colloidal sol is light yellow liquid, and golden colour lustre is arranged.
Claims (8)
1, a kind of nano titanic oxide sol is characterized in that: this colloidal sol comprises nano-titania particle and solvent; Wherein nano-titania particle content is 0.1%～5% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 3～100 nanometers.
2, a kind of nano titanic oxide sol as claimed in claim 1, it is characterized in that: described solvent is a water.
3, a kind of nano titanic oxide sol as claimed in claim 2 is characterized in that: wherein nano-titania particle content is 0.1%～2% of colloidal sol total amount; The titanium dioxide nano-particle particle diameter is between 10～20 nanometers.
4, a kind of nano titanic oxide sol as claimed in claim 1 is characterized in that: described titanium dioxide nano-particle crystal formation is anatase titanium dioxide or rutile-type or their mixing crystal formation.
5, a kind of nano titanic oxide sol as claimed in claim 1 is characterized in that: described colloidal sol mixes up iron or copper or silver or platinum or its combination or lanthanum ion, and concentration is at 10～500ppm.
6, a kind of nano titanic oxide sol as claimed in claim 1 is characterized in that: described colloidal sol is for neutral; Ph value: between 6～8.
7, a kind of nano titanic oxide sol as claimed in claim 1, it is characterized in that: described colloidal sol is pearl opal or light yellow liquid, and golden colour lustre is arranged, and concentration is 0.1%～2%.
8, as the preparation method of the described a kind of nano titanic oxide sol of claim 1～7, it is characterized in that: chemical method generates unformed neutral titania slurry, chlorion is washed to 50ppm the method that the method for washing can adopt whizzer or film processing or electrophoresis to desalt through deionized water; After adding lanthanum nitrate or zinc ferrite, slurry is carried out ultra-sonic dispersion, the slurry behind the ultra-sonic dispersion is put into reactor, heating rises to 80 ℃～200 ℃ crystallization and takes out after 8～72 hours, i.e. and acquisition has the nano titanic oxide sol of photo-catalysis function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029904 CN1562768A (en) | 2004-03-26 | 2004-03-26 | Sol of nano titania and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029904 CN1562768A (en) | 2004-03-26 | 2004-03-26 | Sol of nano titania and preparation method |
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| CN1562768A true CN1562768A (en) | 2005-01-12 |
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| CN 200410029904 Pending CN1562768A (en) | 2004-03-26 | 2004-03-26 | Sol of nano titania and preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653728B (en) * | 2009-09-04 | 2011-04-27 | 大连理工大学 | Preparation method and application thereof for zinc ferrite/titanium dioxide nano compounded visible light photocatalyst |
| CN102132706A (en) * | 2010-09-13 | 2011-07-27 | 河北联合大学 | Four-component compound antibacterial powder |
| CN101737731B (en) * | 2008-11-21 | 2012-03-28 | 海洋王照明科技股份有限公司 | Method for realizing self-cleaning function of lamp and lamp with self-cleaning function |
| CN104549402A (en) * | 2014-11-04 | 2015-04-29 | 华文蔚 | Preparation method of nitrogen-and-fluorine-doped nano photosensitive visible light catalyst |
| CN105148906A (en) * | 2015-07-07 | 2015-12-16 | 幸福阳光（北京）生态技术有限公司 | Photocatalyst added with nanoscale noble metal and preparation method thereof |
| CN107572583A (en) * | 2017-08-01 | 2018-01-12 | 成都博美实润科技有限公司 | A kind of preparation method of dichloride in anatase type titanium colloidal sol |
-
2004
- 2004-03-26 CN CN 200410029904 patent/CN1562768A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737731B (en) * | 2008-11-21 | 2012-03-28 | 海洋王照明科技股份有限公司 | Method for realizing self-cleaning function of lamp and lamp with self-cleaning function |
| CN101653728B (en) * | 2009-09-04 | 2011-04-27 | 大连理工大学 | Preparation method and application thereof for zinc ferrite/titanium dioxide nano compounded visible light photocatalyst |
| CN102132706A (en) * | 2010-09-13 | 2011-07-27 | 河北联合大学 | Four-component compound antibacterial powder |
| CN102132706B (en) * | 2010-09-13 | 2013-05-08 | 河北联合大学 | Four-component compound antibacterial powder |
| CN104549402A (en) * | 2014-11-04 | 2015-04-29 | 华文蔚 | Preparation method of nitrogen-and-fluorine-doped nano photosensitive visible light catalyst |
| CN105148906A (en) * | 2015-07-07 | 2015-12-16 | 幸福阳光（北京）生态技术有限公司 | Photocatalyst added with nanoscale noble metal and preparation method thereof |
| CN107572583A (en) * | 2017-08-01 | 2018-01-12 | 成都博美实润科技有限公司 | A kind of preparation method of dichloride in anatase type titanium colloidal sol |
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