CN104056610A - Method for preparing nanometer titanium dioxide photocatalyst sol - Google Patents
Method for preparing nanometer titanium dioxide photocatalyst sol Download PDFInfo
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- CN104056610A CN104056610A CN201410254007.6A CN201410254007A CN104056610A CN 104056610 A CN104056610 A CN 104056610A CN 201410254007 A CN201410254007 A CN 201410254007A CN 104056610 A CN104056610 A CN 104056610A
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- colloidal sol
- titania photocatalyst
- filter cake
- titanium dioxide
- complexing agent
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Abstract
The invention discloses a method for preparing nanometer titanium dioxide photocatalyst sol. The method comprises the following steps of (1) dissolving organic titanyl sulfate into water at 20 to 80 DEG C, adjusting the pH to be 5 to 9, and performing suction filtration and washing to obtain a filter cake after precipitates are generated in the solution; (2) adding a complexing agent into the obtained filter cake, and performing emulsification to obtain the nanometer titanium dioxide photocatalyst sol. According to the preparation method, the process steps are simple, requirements on equipment are low, the operability is high, the cost is low, energy-saving and environment-friendly effects are achieved, and the nanometer titanium dioxide photocatalyst sol is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of preparation method of colloidal sol, especially relate to a kind of method of preparing nano-titania photocatalyst colloidal sol.
Background technology
Nano-titanium dioxide film is as the most effective surrounding purifying material in the world today, the organic substance decomposing that chemical method and bioanalysis all cannot be able to be removed is carbon dioxide and water, its have photocatalysis performance selectively good, productive rate is high, pollute less, applied widely, there is the advantages such as hydrophilic self-cleaning effect, so obtain people, pay close attention to widely.
The conventional method of preparing at present nano-titanium dioxide film is sol-gel process (Sol-Gel) method, the method is simple to operate, stoichiometric proportion is easy to control, but the raw material of the method adopts organic alkoxide, organic solvent and complexing agent more, so cost compare is high, cause film cost expensive, affected its selling market, the method in process of production in addition, heat treatment stages can produce organic matter, and its organic matter easy firing volatilization easily causes the pollution of environment.
Summary of the invention
The present invention is that cost is low in order to solve the existing above-mentioned deficiency of prior art, to provide a kind of processing step simple, low for equipment requirements, workable, energy-conserving and environment-protective, the method for preparing nano-titania photocatalyst colloidal sol of applicable large-scale industrial production.
To achieve these goals, the present invention is by the following technical solutions:
A method of preparing nano-titania photocatalyst colloidal sol, comprises the following steps:
(1) at 20～80 ℃ of temperature, inorganic titanyl sulfate is soluble in water and regulate pH to 5～9, after solution produces precipitation, suction filtration, washing, obtains filter cake.
(2) in the filter cake obtaining, add complexing agent, through emulsification, obtain nano-titania photocatalyst colloidal sol.
As preferably, in step (1), the mass ratio of inorganic titanyl sulfate and water is 1:(15～20).
As preferably, described water is purified water.
As preferably, in step (2), emulsion process is carried out at normal temperatures, emulsification times 30～40min.
As preferably, in step (2), the mass ratio of described filter cake and complexing agent is 1000:(1～10).
As preferably, described complexing agent is hydrogen peroxide.
Therefore, the invention has the beneficial effects as follows: take inorganic titanyl sulfate as raw material, under normal temperature emulsification treatment condition, obtained nano-titania photocatalyst colloidal sol, processing step is simple, workable, and raw material is cheap and easy to get, cost is low, and energy-conserving and environment-protective, has good application prospect.
The specific embodiment
Below by the specific embodiment, the present invention will be further described.
In the present invention, all devices and raw material all can be buied from market or the industry is conventional, and method in the following embodiments, if no special instructions, is this area conventional method.
Embodiment 1
A method of preparing nano-titania photocatalyst colloidal sol, comprises the following steps:
(1), at 20～80 ℃ of temperature, the ratio that is 1:20 in the mass ratio of inorganic titanyl sulfate and purified water, is dissolved in purified water by inorganic titanyl sulfate and regulates pH to 9, after solution produces precipitation, and suction filtration, washing, obtains filter cake;
(2) ratio that is 1000:10 in the mass ratio of filter cake and complexing agent adds complexing agent in the filter cake obtaining, and complexing agent is hydrogen peroxide, and emulsification 40min obtains nano-titania photocatalyst colloidal sol at normal temperatures.
Embodiment 2
A method of preparing nano-titania photocatalyst colloidal sol, comprises the following steps:
(1), at 20 ℃ of temperature, the ratio that is 1:15 in the mass ratio of inorganic titanyl sulfate and purified water, is dissolved in purified water by inorganic titanyl sulfate and regulates pH to 5, after solution produces without precipitation, and suction filtration, washing, obtains filter cake;
(2) ratio that is 1000:1 in the mass ratio of filter cake and complexing agent adds complexing agent in the filter cake obtaining, and complexing agent is hydrogen peroxide, and emulsification 30min obtains nano-titania photocatalyst colloidal sol at normal temperatures.
Embodiment 3
A method of preparing titanium dioxide optical catalyst sol, comprises the following steps:
(1), at 40 ℃ of temperature, the ratio that is 1:18 in the mass ratio of inorganic titanyl sulfate and purified water, is dissolved in purified water by inorganic titanyl sulfate and regulates pH to 6, after solution produces precipitation, and suction filtration, washing, obtains filter cake;
(2) ratio that is 1000:3 in the mass ratio of filter cake and complexing agent adds complexing agent in the filter cake obtaining, and complexing agent is hydrogen peroxide, and emulsification 35min obtains nano-titania photocatalyst colloidal sol at normal temperatures.
Preparation method's processing step of the present invention is simple, low for equipment requirements, workable, and cost is low, and energy-conserving and environment-protective are applicable to large-scale industrial production, have good application prospect.
Above-described embodiment is a kind of preferably scheme of the present invention, not the present invention is done to any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim records.
Claims (6)
1. a method of preparing nano-titania photocatalyst colloidal sol, is characterized in that, comprises the following steps:
(1) at 20～80 ℃ of temperature, inorganic titanyl sulfate is soluble in water and regulate pH to 5～9, after solution produces precipitation, suction filtration, washing, obtains filter cake;
(2) in the filter cake obtaining, add complexing agent, through emulsification, obtain nano-titania photocatalyst colloidal sol.
2. a kind of method of preparing nano-titania photocatalyst colloidal sol according to claim 1, is characterized in that, in step (1), the mass ratio of inorganic titanyl sulfate and water is 1:(15～20).
3. a kind of method of preparing nano-titania photocatalyst colloidal sol according to claim 1 and 2, is characterized in that, described water is purified water.
4. a kind of method of preparing nano-titania photocatalyst colloidal sol according to claim 1, is characterized in that, in step (2), emulsion process is carried out at normal temperatures, emulsification times 30～40min.
5. a kind of method of preparing nano-titania photocatalyst colloidal sol according to claim 1, is characterized in that, in step (2), the mass ratio of described filter cake and complexing agent is 1000:(1～10).
6. a kind of method of preparing nano-titania photocatalyst colloidal sol according to claim 1 or 5, is characterized in that, described complexing agent is hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410254007.6A CN104056610A (en) | 2014-06-09 | 2014-06-09 | Method for preparing nanometer titanium dioxide photocatalyst sol |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410254007.6A CN104056610A (en) | 2014-06-09 | 2014-06-09 | Method for preparing nanometer titanium dioxide photocatalyst sol |
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| CN201410254007.6A Pending CN104056610A (en) | 2014-06-09 | 2014-06-09 | Method for preparing nanometer titanium dioxide photocatalyst sol |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733846A (en) * | 2004-08-11 | 2006-02-15 | 天津大学 | Method for preparing peroxo-titanic acid photocatalytic coating agent |
| US20100226851A1 (en) * | 2006-09-21 | 2010-09-09 | Insoo Kim | Low temperature process for producing nano-sized titanium dioxide particles |
| CN103769067A (en) * | 2013-04-15 | 2014-05-07 | 盖剑明 | Method for preparing titanium dioxide photocatalytic sol by using inorganic salt |
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2014
- 2014-06-09 CN CN201410254007.6A patent/CN104056610A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733846A (en) * | 2004-08-11 | 2006-02-15 | 天津大学 | Method for preparing peroxo-titanic acid photocatalytic coating agent |
| US20100226851A1 (en) * | 2006-09-21 | 2010-09-09 | Insoo Kim | Low temperature process for producing nano-sized titanium dioxide particles |
| CN103769067A (en) * | 2013-04-15 | 2014-05-07 | 盖剑明 | Method for preparing titanium dioxide photocatalytic sol by using inorganic salt |
Non-Patent Citations (2)
| Title |
|---|
| 孙明 等: "光催化二氧化钛溶胶的制备", 《稀有金属材料与工程》, vol. 37, 31 January 2008 (2008-01-31) * |
| 许第发 等: "过氧改性纳米 TiO2溶胶的制备及其光催化性能", 《硅酸盐通报》, vol. 31, no. 4, 31 August 2012 (2012-08-31) * |
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