CN112544632A - Cerium bromide doped titanium dioxide visible sterilization preparation - Google Patents
Cerium bromide doped titanium dioxide visible sterilization preparation Download PDFInfo
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- CN112544632A CN112544632A CN202011618489.0A CN202011618489A CN112544632A CN 112544632 A CN112544632 A CN 112544632A CN 202011618489 A CN202011618489 A CN 202011618489A CN 112544632 A CN112544632 A CN 112544632A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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Abstract
A cerium bromide doped titanium dioxide visual sterilization preparation, in particular to a doped titanium dioxide visual sterilization preparation which can continuously play the photocatalytic activity in the public places with dense personnel and large fluidity and has the photoinduced chromogenic sensory special effect. The invention overcomes the defect that the performance of the self oxidation reaction of single titanium dioxide is influenced by the intensity of light, optimizes the photocatalysis effect of the titanium dioxide and is easy to be identified by light sensing. Solves the problems that the titanium dioxide can not achieve the best photocatalysis effect under the condition of weak light and can identify the action intensity of the titanium dioxide by sense organ. The preparation can be powder, aqueous solution or synthetic material additive, and is applied to the public fields of disinfection and sterilization and environmental pollution purification.
Description
Technical Field
A cerium bromide doped titanium dioxide visual sterilization preparation, in particular to a doped titanium dioxide visual sterilization preparation which can continuously play the photocatalytic activity in the public places with dense personnel and large fluidity and has the photoinduced chromogenic sensory special effect. The invention overcomes the defect that the performance of the self oxidation reaction of single titanium dioxide is influenced by the intensity of light, optimizes the photocatalysis effect of the titanium dioxide and is easy to be identified by light sensing. Solves the problems that the titanium dioxide can not achieve the best photocatalysis effect under the condition of weak light and can identify the action intensity of the titanium dioxide by sense organ. The preparation can be powder, aqueous solution or synthetic material additive, and is applied to the public fields of disinfection and sterilization and environmental pollution purification.
Background
At present, the raw materials for sterilizing and disinfecting the public environment are mainly prepared by chlorine-containing compounds. The operation must be regularly and frequently carried out, and the cost of a large amount of disinfectant and labor hour is required to be invested. The traditional disinfectant can enhance the resistance of bacteria and viruses even the bacteria and viruses are mutated after long-term use. In recent years, the photocatalytic agent titanium dioxide is applied to the market, and the photocatalytic agent breaks cell walls of cells to necrose the cells by physical action, so that the photocatalytic agent titanium dioxide becomes an ecological environment-friendly sterilization and purification raw material. However, the practical application of the method is limited by environmental conditions, so that the action effect is reduced. It is often necessary to dope other particles as a supplementary element to enhance the redox reaction.
The sterilization effect of the photocatalyst is to carry out photocatalytic reaction by a light source, and the main chemical component of the photocatalyst is titanium dioxide. Titanium dioxide exhibits high photocatalytic activity when irradiated with ultraviolet light of sufficient intensity. But visible light is hardly active. Sunlight contains certain ultraviolet rays but indoor photobase contains only a small amount of ultraviolet rays. Therefore, the photocatalytic reaction itself is hardly completed in the case where the light is weak or no light is present in the room. The visual perception on sense organ can not be provided for users in the market application, and in order to solve the problem, the invention discloses a cerium bromide doped titanium dioxide visual sterilization preparation. By compounding with cerium bromide, the preparation can obtain better reduction effect under illumination and can be visually identified according to the intensity of light. The preparation can be powder, aqueous solution or synthetic material additive, and is applied to the public fields of disinfection and sterilization and environmental purification.
Disclosure of Invention
In order to overcome the problem that the photocatalytic sterilization effect cannot be fully performed under the condition of weak light, the invention provides a cerium bromide doped titanium dioxide visible sterilization preparation. Cerium bromide is added into titanium dioxide to prepare a titanium dioxide-doped visual sterilization preparation, so that the oxidation-reduction reaction of the photocatalyst is improved and the photocatalyst can be visualized visually. The preparation can be powder, aqueous solution or synthetic material additive, and is applied to the public fields of disinfection and sterilization and environmental purification.
The technical scheme adopted by the invention for solving the technical problems is as follows:
cerium bromide is added into titanium dioxide to prepare a doped titanium dioxide visual sterilization preparation. Ce rapidly decaying by cerium bromide3+The preparation can obtain electrons when light is strong, keeps a certain charge for the inside to attract cations and can visually change when the light intensity changes.
Cerium bromide crystals are materials of reducing energy. When irradiated with ultraviolet light, titanium dioxide is excited to produce electrons and holes, which mainly contribute to the oxidation of water to form protons (H)+）（2H2O+4H+——>O2+4H+Or H2O+h+——> .OH+H+) (ii) a The electrons pass through the inside of the n-type semiconductor titanium dioxide, transferring energy to the material. At this time, cerium bromide holds a certain charge for the inside to attract cations while gaining electrons. The substance reduces oxygen upon release of energy, thereby forming a peroxyacid. Therefore, the antibacterial activity against germs can be exerted even in a dark place. Although the antibacterial effect is weaker than that under light irradiation, the proliferation of germs can be inhibited to some extent, and complete sterilization can be achieved within 24 hours.
The cerium bromide is used as an additive, and has the characteristics that:
under the photo-excitation of cerium bromide, the KeV gamma ray of the main peak of the crystal is positioned at 390 nm; its light transmittance at 390nm was 60%. Can convert high-energy rays such as X, gamma and the like into ultraviolet-visible light.
The cerium bromide element has an incomparable optical characteristic because the cerium bromide element generates light by converting absorbed energy into light radiation, and the cerium bromide element has a very strong spectral property because the cerium bromide element has a special electronic layer structure and can emit the absorbed energy in the form of light, and the light emitting range of the cerium bromide element almost covers the whole solid light emitting range. And because the luminescent material has abundant electronic energy levels, conditions are created for different energy level transitions, and various luminescent properties are obtained. Electrons in atoms of the organic electroluminescent element are excited to absorb energy, and release energy in the form of light in the process of transitioning to an excited state (unstable state) and returning to a ground state. The cerium bromide compound is used as a substrate, so that the titanium dioxide photocatalyst can effectively perform a better photocatalytic effect.
The use of titanium dioxide is known to activate the oxidative sterilization effect of the photocatalyst through a photocatalytic reaction, and the sterilization intensity varies according to the light source intensity.
The invention has the advantages that cerium bromide with photosensitive efficiency by using the light source and titanium dioxide with photocatalysis are effectively combined together, so that the respective advantages are exerted, and the application field and the implementation range of the photocatalyst are more effectively enlarged.
The specific implementation mode is as follows:
example (b):
1. adding cerium bromide powder into titanium dioxide photocatalyst powder, and uniformly mixing to prepare mixed powder.
2. Adding cerium bromide powder into titanium dioxide photocatalyst powder, uniformly mixing to form mixed powder, and then carrying out preparation treatment in a liquefaction process to form a liquid water agent.
The prepared cerium bromide doped titanium dioxide visual sterilization preparation aqueous solution is directly sprayed on the surface of an object to form a firm film layer with strong adhesive force to be attached to the surface of the object, and the cerium bromide doped titanium dioxide visual sterilization preparation aqueous solution layer is completed through a drying and curing process for 10 hours.
3. Adding cerium bromide powder into titanium dioxide photocatalyst powder, uniformly mixing, and carrying out preparation treatment in a fusion process with other material elements to obtain the synthetic material additive.
The cerium bromide doped titanium dioxide visible sterilization preparation can perform better photocatalysis under the condition of different light intensities and has the sensory special effect of photochromism. The method is applied to the public fields of disinfection and sterilization and environmental pollution purification.
Claims (4)
1. A cerium bromide doped titanium dioxide visual sterilization preparation is characterized in that: a combined preparation of cerium bromide and titanium dioxide photocatalyst.
2. The visual sterilization formulation of cerium bromide doped titanium dioxide as claimed in claim 1, wherein: the combined preparation is mixed powder.
3. The visual sterilization formulation of cerium bromide doped titanium dioxide as claimed in claim 1, wherein: the combined preparation is a water agent.
4. The visual sterilization formulation of cerium bromide doped titanium dioxide as claimed in claim 1, wherein: the combined preparation is a synthetic material additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618489.0A CN112544632A (en) | 2020-12-31 | 2020-12-31 | Cerium bromide doped titanium dioxide visible sterilization preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618489.0A CN112544632A (en) | 2020-12-31 | 2020-12-31 | Cerium bromide doped titanium dioxide visible sterilization preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112544632A true CN112544632A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011618489.0A Pending CN112544632A (en) | 2020-12-31 | 2020-12-31 | Cerium bromide doped titanium dioxide visible sterilization preparation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115474611A (en) * | 2022-10-20 | 2022-12-16 | 代思炜 | Cesium iodide doped titanium dioxide visible strong-effect sterilization preparation |
Citations (8)
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| CN1454481A (en) * | 2003-05-29 | 2003-11-12 | 四川大学 | Rare-earth-carrying nano titanium dioxide antibacterial agent and preparation method thereof |
| CN1559226A (en) * | 2004-03-12 | 2005-01-05 | 云南大学 | Composite photocatalytic antibacterial matter excited by visible light, and prepn. method |
| US20120201732A1 (en) * | 2011-02-07 | 2012-08-09 | Millennium Inorganic Chemicals, Inc. | Ce containing, v-free mobile denox catalyst |
| CN103480396A (en) * | 2013-10-16 | 2014-01-01 | 代思炜 | Visual sterilization strength color-changing photocatalyst preparation |
| CN103962125A (en) * | 2014-01-16 | 2014-08-06 | 代思炜 | Energy storage type photocatalyst preparation |
| CN106189390A (en) * | 2016-07-20 | 2016-12-07 | 王玲 | A kind of photocatalyst of titanium dioxide coating and film thereof, and preparation method |
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Patent Citations (8)
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| CN1454481A (en) * | 2003-05-29 | 2003-11-12 | 四川大学 | Rare-earth-carrying nano titanium dioxide antibacterial agent and preparation method thereof |
| CN1559226A (en) * | 2004-03-12 | 2005-01-05 | 云南大学 | Composite photocatalytic antibacterial matter excited by visible light, and prepn. method |
| US20120201732A1 (en) * | 2011-02-07 | 2012-08-09 | Millennium Inorganic Chemicals, Inc. | Ce containing, v-free mobile denox catalyst |
| CN103480396A (en) * | 2013-10-16 | 2014-01-01 | 代思炜 | Visual sterilization strength color-changing photocatalyst preparation |
| CN103962125A (en) * | 2014-01-16 | 2014-08-06 | 代思炜 | Energy storage type photocatalyst preparation |
| CN106189390A (en) * | 2016-07-20 | 2016-12-07 | 王玲 | A kind of photocatalyst of titanium dioxide coating and film thereof, and preparation method |
| TW201902353A (en) * | 2017-06-08 | 2019-01-16 | 陳郁文 | Method of producing nano ceria-titania binary oxide sol and its application in antibacteria |
| CN109593393A (en) * | 2018-12-27 | 2019-04-09 | 宁波中石化科技股份有限公司 | The preparation method of interior wall coating antibacterial agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115474611A (en) * | 2022-10-20 | 2022-12-16 | 代思炜 | Cesium iodide doped titanium dioxide visible strong-effect sterilization preparation |
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