CN1407028A - Nano-anatase titanium oxide preparation - Google Patents
Nano-anatase titanium oxide preparation Download PDFInfo
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- CN1407028A CN1407028A CN 01133230 CN01133230A CN1407028A CN 1407028 A CN1407028 A CN 1407028A CN 01133230 CN01133230 CN 01133230 CN 01133230 A CN01133230 A CN 01133230A CN 1407028 A CN1407028 A CN 1407028A
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Abstract
A process for preparing nano-class anatase-type titanium oxide includes such steps as preparing the suspension of naon carrier with water, proportionally adding solution of TiCl4, adding alkali solution to regulate pH value to 6-9, generating solid phase, washing and calcining. Its advantages are high specific surface area, and high surface activity.
Description
Technical field
That the present invention relates to is the preparation method of nano-anatase titanium oxide.
Background technology
Titanium oxide is employed in numerous areas such as modern industry, agricultural, national defence and science and technology as important inorganic functional material.Titanium oxide has brookite, rutile, and three kinds of crystal formations of anatase octahedrite, using more is rutile and two kinds of crystal formations of anatase octahedrite.Since 1972 find that titania surface can continue water of decomposition by photocatalysis, with its be the photocatalyst material of representative in the resource of purifying waste water, purify air, sterilization, the application of aspects such as deodorizing has been subjected to people's extensive concern.The Superhydrophilic that the titania surface of recent findings has after uviolizing has been opened up new field (as material surface automatically cleaning etc.) for its applied research again.The lot of documents report thinks that the photocatalytic activity of anatase-type titanium oxide is higher than the photocatalytic activity of Titanium Dioxide (Rutile) Top grade.Nano-titanium oxide is one of of paramount importance research object in the nano material, compares with common titanium oxide, because its particle diameter is little, specific surface is big, and the surface atom coordination does not cause activity site increase etc. entirely, thereby has excellent physics and chemical property.Nano-anatase titanium oxide has caused people's attention more and more as typical photocatalyst, in a lot of fields tempting prospect is arranged.The preparation method of nano-anatase titanium oxide that at present many bibliographical informations arranged mainly contains sol-gel method, vapour deposition process, hydrothermal oxidization method etc.These preparation methods respectively have characteristics, but they also have the deficiency of the relatively poor nano-anatase titanium oxide of resulting mixed crystal type often or degree of crystallinity except that defectives such as cost high technology complexity are arranged.Show that by the photochemical catalysis experiment nano-anatase titanium oxide of mixed crystal type does not have photocatalytic activity basically, the photocatalytic activity of the nano-anatase titanium oxide that degree of crystallinity is relatively poor also reduces greatly.
Summary of the invention
The technical problem to be solved in the present invention just provides a kind of above-mentioned insufficient preparation method that can obtain better crystallinity degree, nano-anatase titanium oxide that photocatalytic activity is high that overcome.
The preparation method of nano-anatase titanium oxide provided by the invention, its technological process is with water the nanostructure solid support material to be modulated into suspension earlier, the ratio adding titanium tetrachloride solution that adds the pure titanium tetrachloride of 3-30ml then in 100g nanostructure solid support material, the back adds alkaline solution adjusting pH value to 6-9 again, obtains solid phase at last and obtains nano-anatase titanium oxide through washing and calcining.
The preparation method of nano-anatase titanium oxide provided by the invention, the nanostructure solid support material that adopts is the nano-complex of nano silicon-based oxide, nano aluminium oxide or silicon oxide and aluminum oxide, their physical form is cotton-shaped or reticulated particle, median size is 10-30nm, and specific surface is 400-1000m
2/ g, purity is more than 99%, thing is non-crystalline state mutually.The trade mark of producing as Zhoushan Tomorrow Nanomaterials Co., Ltd is the nano silicon-based oxide of DP1.
The preparation method of nano-anatase titanium oxide provided by the invention, the titanium tetrachloride solution concentration that is added are 15%-50% (weight).
The preparation method of nano-anatase titanium oxide provided by the invention, used alkaline solution is sodium hydroxide solution or potassium hydroxide solution etc.
The preparation method of nano-anatase provided by the invention ore deposit type titanium oxide, huge specific surface and the microporous constitutional features of utilizing the nanostructure solid support material to be had, the anatase-type titanium oxide particle is coated to the surface of nanostructure solid support material, improve the specific surface of nano-anatase titanium oxide greatly, thereby strengthened photocatalytic activity.
Weight ratio with nano-anatase titanium oxide and nanostructure carrier in the prepared nano-anatase titanium oxide of the preparation method of nano-anatase titanium oxide provided by the invention is 0.1: 1-1: 1.Its characteristic is as follows:
| Face shaping | The thing phase | Initial size (nm) | With light packs density (g/cm 3) | Specific surface (m 2/g) |
| White powder | Anatase crystal | ???15-40 | ????0.04-0.08 | ????200-300 |
It is big that the nano-anatase titanium oxide that the preparation method of nano-anatase titanium oxide provided by the invention makes has a specific surface, characteristics such as surfactivity height, can be widely used in organic photodegradation in the air, hopping mad bacterium of deodorizing and surperficial automatically cleaning are removed in the decomposition of oxynitride in the atmosphere.
Description of drawings
Accompanying drawing is the prepared TiOx nano X-ray diffraction in crystals of the preparation method of nano-anatase titanium oxide provided by the invention figure, and the crystalline form that shows resulting titanium oxide is an anatase octahedrite.
Embodiment
Embodiment 1: at first 400 gram nanostructure solid support material silicon-base oxides are joined in the 1500ml deionized water, use ultrasonic dispersing, at room temperature add concentration then while stirring and be 15% titanium tetrachloride solution 120ml, add back ageing 1 hour, regulate PH to 6.5 with sodium hydroxide solution again, gained reactant centrifuge washing is to there not being chlorion, and with twice of washing with alcohol, then in 450 ℃ of dryings 2 hours, disperse through micronizer mill, obtain nano-anatase titanium oxide at last, its crystalline form as shown in drawings.
Embodiment 2: at first 300g nanostructure solid support material nano aluminium oxide is joined in the 3000ml deionized water, use ultrasonic dispersing, at room temperature add concentration then while stirring and be 30% titanium tetrachloride solution 150ml, add back ageing 1 hour, regulate PH to 9 with 10% potassium hydroxide solution again, gained reactant centrifuge washing is to there not being chlorion, and with twice of washing with alcohol, in 450 ℃ of dryings 2 hours, disperse then, obtain nano-anatase titanium oxide at last through micronizer mill.
Claims (4)
1, a kind of preparation method of nano-anatase titanium oxide, it is characterized in that its technological process is with water nano structure carrier material to be modulated into suspension earlier, the ratio adding titanium tetrachloride solution that adds the pure titanium tetrachloride of 3-30ml then in every 100g nanostructure solid support material, the back adds alkaline solution adjusting pH value to 6-9 again, obtains solid phase at last and obtains the nanometer anatase type titanium oxide through washing and calcining.
2, the preparation method of nano-anatase titanium oxide as claimed in claim 1 is characterized in that the nanostructure solid support material that is adopted is the nano-complex of nano silicon-based oxide, nano aluminium oxide or silicon oxide and aluminum oxide.
3, the preparation method of nano-anatase titanium oxide as claimed in claim 1, the titanium tetrachloride solution concentration that is added are 15%-50% (weight).
4, the preparation method of nano-anatase titanium oxide as claimed in claim 1 is characterized in that used alkaline solution is sodium hydroxide solution or potassium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01133230 CN1407028A (en) | 2001-09-13 | 2001-09-13 | Nano-anatase titanium oxide preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01133230 CN1407028A (en) | 2001-09-13 | 2001-09-13 | Nano-anatase titanium oxide preparation |
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| CN1407028A true CN1407028A (en) | 2003-04-02 |
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|---|---|---|---|
| CN 01133230 Pending CN1407028A (en) | 2001-09-13 | 2001-09-13 | Nano-anatase titanium oxide preparation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100482748C (en) * | 2006-03-03 | 2009-04-29 | 攀钢集团攀枝花钢铁研究院 | Preparation method of high-water-dispersibility titanium dioxide |
| CN107324383A (en) * | 2017-07-20 | 2017-11-07 | 国家纳米科学中心 | A kind of nano-TiO2Aqueous liquid dispersion and its preparation method and application |
| CN107519894A (en) * | 2017-09-14 | 2017-12-29 | 新沂市中诺新材料科技有限公司 | A kind of lanthanum of modification/zirconium germanium sulfide/alumina composite photochemical catalyst |
| CN114773882A (en) * | 2022-05-24 | 2022-07-22 | 天泰(福建)新材料科技有限公司 | Titanium dioxide for delustering chinlon chemical fibers and preparation method thereof |
-
2001
- 2001-09-13 CN CN 01133230 patent/CN1407028A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100482748C (en) * | 2006-03-03 | 2009-04-29 | 攀钢集团攀枝花钢铁研究院 | Preparation method of high-water-dispersibility titanium dioxide |
| CN107324383A (en) * | 2017-07-20 | 2017-11-07 | 国家纳米科学中心 | A kind of nano-TiO2Aqueous liquid dispersion and its preparation method and application |
| CN107519894A (en) * | 2017-09-14 | 2017-12-29 | 新沂市中诺新材料科技有限公司 | A kind of lanthanum of modification/zirconium germanium sulfide/alumina composite photochemical catalyst |
| CN114773882A (en) * | 2022-05-24 | 2022-07-22 | 天泰(福建)新材料科技有限公司 | Titanium dioxide for delustering chinlon chemical fibers and preparation method thereof |
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