CN116272940A - Photocatalyst particles, preparation method and application equipment thereof - Google Patents
Photocatalyst particles, preparation method and application equipment thereof Download PDFInfo
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- CN116272940A CN116272940A CN202310392637.9A CN202310392637A CN116272940A CN 116272940 A CN116272940 A CN 116272940A CN 202310392637 A CN202310392637 A CN 202310392637A CN 116272940 A CN116272940 A CN 116272940A
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- 239000002245 particle Substances 0.000 title claims abstract description 118
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000013078 crystal Substances 0.000 claims abstract description 67
- 230000005284 excitation Effects 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000013081 microcrystal Substances 0.000 claims abstract description 30
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000001699 photocatalysis Effects 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000004381 surface treatment Methods 0.000 claims abstract description 13
- 238000006479 redox reaction Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000000889 atomisation Methods 0.000 claims description 37
- 239000004575 stone Substances 0.000 claims description 31
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 23
- 239000003595 mist Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 14
- 230000000670 limiting effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 16
- 230000003197 catalytic effect Effects 0.000 abstract description 7
- 239000011029 spinel Substances 0.000 abstract description 5
- 229910052596 spinel Inorganic materials 0.000 abstract description 5
- 239000013589 supplement Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 7
- 238000013032 photocatalytic reaction Methods 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 description 4
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- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 3
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- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
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- 239000000243 solution Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
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- 229920003303 ion-exchange polymer Polymers 0.000 description 1
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- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0873—Materials to be treated
- B01J2219/0892—Materials to be treated involving catalytically active material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to the technical field of preparation and application of photocatalyst materials, in particular to photocatalyst particles, a preparation method and application equipment thereof, wherein the preparation method comprises the following steps: selecting spinel; carrying out plasma surface treatment on the crystal; spraying nano titanium dioxide hydrosol on the surface of the crystal; baking the crystal at high temperature; and cooling the crystal. The application equipment comprises a water tank, microcrystal particles, an excitation light source and a control component, wherein the microcrystal particles are arranged as photocatalyst particles, the excitation light source is arranged as an ultraviolet lamp, and light rays emitted by the excitation light source irradiate on the photocatalyst particles to enable the photocatalyst particles to generate photocatalytic oxidation-reduction reaction. Finally, the invention realizes miniaturization of the photocatalyst particles, improves the service life and the catalytic effect of the photocatalyst particles, and can sterilize and disinfect the liquid in the portable equipment, thereby improving the use safety of the equipment and improving the safety of a user when using the portable equipment to supplement water.
Description
Technical Field
The invention relates to the technical field of preparation and application of photocatalyst materials, in particular to photocatalyst particles, and a preparation method and application equipment thereof.
Background
The photocatalysis principle is based on the oxidation-reduction capability of the photocatalyst under the condition of illumination, so that the purposes of purifying pollutants, synthesizing substances, converting substances and the like can be achieved. Photocatalysts are a generic term for chemical substances that are capable of catalyzing under the excitation of photons. The most valuable photocatalytic material known for use in the 21 st century is titanium dioxide.
Specifically, the principle of photocatalysis is to excite a compound semiconductor such as titanium dioxide by light, and to participate in oxidation-reduction reactions by electrons and holes generated by the compound semiconductor. When light with energy greater than or equal to the energy gap is irradiated onto the semiconductor nanoparticle, electrons in the valence band thereof will be excited to transit to the conduction band, leaving relatively stable holes in the valence band, thereby forming electron-hole pairs. Due to the large number of defects and dangling bonds in the nanomaterial, the defects and dangling bonds can trap electrons or holes and prevent recombination of the electrons and the holes. These trapped electrons and holes diffuse to the surface of the particles, respectively, creating a strong redox potential.
Chinese patent publication No. CN1100835C discloses a titanium sol-gel coating added with nano inorganic compound particles, its preparation method and application. Consists of (weight percentage concentration): 1 to 30 percent of titanate or titanate, 0.5 to 10 percent of hydrolysis catalyst, 0.001 to 10 percent of nano inorganic compound particles and 50 to 98 percent of diluent. The colloid is synthesized by adding nano inorganic compound particles and under ultraviolet irradiation. The method can be used for preparing the multifunctional titanium dioxide composite film material with photocatalytic degradation and photoinduced rapid reaching of high hydrophilicity, and the material has the functions of photocatalytic degradation of harmful substances, fog resistance, pollution resistance, self cleaning, easy cleaning and colorization.
Chinese patent publication No. CN104909404B discloses a stable nano titania hydrosol composed of nano TiO2 particles with average particle size of 5-20nm, glyoxylic acid or pyruvic acid, surfactant, bactericide and deionized water; the nano TiO2 particles in the hydrosol are obtained by hydrolyzing inorganic titanium salt or organic titanate in the presence of strong alkaline ion exchange resin to form precipitate and further peptizing with glyoxylic acid or pyruvic acid.
It can be seen that photocatalytic redox reactions have been developed and used on a considerable scale, such as for killing bacteria in operating rooms, such as in air filters to decompose harmful gases, unlike degradation of pollutants in water, etc.
However, since the photocatalyst is not selective in decomposing substances, the photocatalyst-carrying material itself is decomposed, thereby causing the falling of the photocatalyst particles, and the corresponding photocatalyst material is disabled; secondly, the agglomeration phenomenon of the photocatalyst particles is serious, so that the specific surface area is too small, and the catalytic effect is weak. Especially, the effect of using the photocatalyst in miniaturized portable devices is also poor.
Therefore, how to slow down the falling of the photocatalytic particles, increase the specific surface area of the photocatalytic particles, and improve the catalytic effect of the photocatalyst, and further use the photocatalysis technology on miniaturized portable equipment is a technical problem to be solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.
The invention provides a preparation method of photocatalyst particles, which comprises the following steps:
firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm;
secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal;
step three, spraying nano titanium dioxide hydrosol on the surface of the crystal after the treatment in the step two;
step four, baking the crystal stone treated in the step three at a high temperature;
and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles.
As a further scheme of the invention: the treatment time of the plasma surface treatment is 2-6 minutes.
As a further scheme of the invention: the concentration of the nano titanium dioxide particles in the nano titanium dioxide hydrosol is 5% -20%.
As a further scheme of the invention: the baking temperature of the high-temperature baking is 1100-1300 ℃, and the baking time of the high-temperature baking is 15-45 minutes.
As a further scheme of the invention: in the first step, ultrasonic cleaning is carried out on the selected crystal; and step five, performing ultrasonic cleaning on the cooled crystal.
The invention also provides a photocatalyst particle, which is prepared by using the preparation method according to any one of the schemes.
The invention also provides application equipment of the photocatalyst particles, which comprises a water tank, microcrystalline particles, an excitation light source and a control assembly, wherein the water tank is internally provided with liquid, the microcrystalline particles are arranged in the water tank and are immersed by the liquid, the excitation light source is used for emitting light to irradiate the microcrystalline particles, the control assembly is used for providing power for the excitation light source and controlling the excitation light source to be turned on and off, the microcrystalline particles are arranged as the photocatalyst particles, the excitation light source is arranged as an ultraviolet lamp, and the light emitted by the excitation light source irradiates the photocatalyst particles, so that the photocatalyst particles generate photocatalytic oxidation-reduction reaction.
As a further scheme of the invention: the water tank is provided with an atomization assembly, the atomization assembly is provided with an atomization seat and an atomization sheet, the atomization sheet is electrically connected with the control assembly, and the atomization sheet is movably connected to the atomization seat and performs atomization treatment on liquid entering the atomization seat; the water inlet end of the atomizing seat is communicated with the cavity for storing liquid in the water tank, so that the liquid can enter the atomizing seat, and the mist outlet end of the atomizing seat is communicated with the external space, so that the mist after atomization treatment can be sprayed into the external space.
As a further scheme of the invention: the water tank is internally provided with a microcrystal box body and a microcrystal box cover, microcrystal particles are placed in the microcrystal box body, and the microcrystal box cover is buckled on the microcrystal box body, so that limit effect is formed on the microcrystal particles; the microcrystalline box body and the microcrystalline box cover are respectively provided with through holes, and the through holes are used for passing through light rays emitted by the excitation light source or liquid in the water tank.
As a further scheme of the invention: the water tank is characterized by further comprising an upper cover and a bottom cover, wherein the upper cover and the bottom cover are in butt joint with each other to form an initial state, a support is arranged in the bottom cover, the support is fixedly connected inside the bottom cover, the control assembly is fixedly connected on the support, one end of the water tank is fixedly connected on the support, the other end of the water tank is provided with a water inlet and a sealing cover, the water inlet is communicated with a cavity for storing liquid of the water tank, and the sealing cover is detachably buckled and connected on the water inlet; the upper cover is movably sleeved on the outer wall of the water tank.
As a further scheme of the invention: the control assembly is provided with a control chip, a main control board, a battery and a charging terminal which are electrically connected with each other, the main control board and the battery are respectively and fixedly connected on the bracket, the control chip and the charging terminal are fixedly connected on the main control board, and the excitation light source is fixedly connected on the main control board and is electrically connected with the control chip.
As a further scheme of the invention: the control assembly is provided with a Hall switch and a magnetic element, the Hall switch is fixedly connected to the water tank, and the Hall switch is electrically connected with the control chip; the magnetic element is fixedly connected to the upper cover, and the upper cover moves for a certain distance to enable the magnetic element to synchronously move for the same distance, so that the magnetic element is sensed by the Hall switch and sends corresponding opening and closing signals, and the control chip receives the opening and closing signals of the Hall switch and then opens or closes the excitation light source and the atomization assembly.
As a further scheme of the invention: the water tank is characterized in that a sliding groove and a limiting block are arranged on the outer side wall of the water tank, a sliding bar and a limiting protrusion are arranged on the inner side wall of the upper cover, and when the upper cover is sleeved on the water tank, the sliding bar and the sliding groove are matched with each other, so that the sliding bar slides in the sliding groove, and the upper cover moves a certain distance along the axial direction of the water tank; the limit protrusion and the limit block are matched with each other, so that the upper cover is limited on the corresponding position along the axial direction of the water tank.
Compared with the prior art, the invention has the beneficial effects that:
1. the spinel is used as a base material to realize larger specific surface area, so that the density of titanium dioxide sprayed on a base material is increased, the specific surface area of titanium dioxide particles serving as a photocatalyst is increased, and the catalytic effect of the photocatalyst is improved.
2. The spinel has high hardness and strong stability, so that the speed of photocatalytic decomposition of the spinel serving as a base material can be slowed down, the falling of photocatalytic particles is reduced, the service life of the photocatalytic particles is prolonged, and the use cost of a user is reduced.
3. The surface adhesive force of the crystal is improved by plasma surface treatment, so that the nano titanium dioxide hydrosol can be better sprayed on the surface of the crystal. The nano titanium dioxide particles are better combined with the crystal stone through high-temperature baking, so that the firmness of the photocatalytic particles on the surface of the crystal stone is improved, and the service life of the photocatalytic particles is prolonged.
4. The miniature crystal particles are selected as the base material, so that the cost is further reduced, the miniature crystal particles are conveniently placed in miniature portable equipment, the effect of sterilizing and disinfecting the liquid in the equipment is realized, and the use safety of the portable equipment is improved.
Therefore, the improvement of the invention realizes miniaturization of the photocatalyst particles, improves the service life and the catalytic effect of the photocatalyst particles, and can be used in miniaturized portable equipment to sterilize and disinfect liquid in the portable equipment, thereby improving the use safety of the equipment and improving the safety of a user when using the portable equipment to supplement water.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the steps of the preparation method of the present invention;
FIG. 2 is a schematic cross-sectional view of the internal structure of the application device of the present invention;
FIG. 3 is a schematic illustration of the atomizing assembly of the application apparatus of the present invention;
FIG. 4 is a schematic cross-sectional view showing the internal structure of the application device of the present invention in its operating state;
fig. 5 is a schematic structural view of a water tank of the application device of the present invention;
FIG. 6 is a schematic view of the inner wall structure of the upper cover of the application device of the present invention;
FIG. 7 is a schematic diagram of the microcrystalline case and microcrystalline granule exploded structure of the present invention;
FIG. 8 is an external schematic view of the application device initial state of the present invention;
FIG. 9 is an external schematic view of the application device of the present invention in operation;
fig. 10 is a schematic view showing an exploded structure of an upper cover of the application device of the present invention.
Reference numerals and names in the drawings are as follows:
10 a water tank; 11 water inlets; 12 sealing covers; 13 sliding grooves; a 14 limiting block; 15, a fog outlet; a 16-light-transmitting body; 20 microcrystal box bodies; 21 microcrystal box cover; 22 through holes; 23 microcrystal particles; 30 excitation light source; 31 ultraviolet lamp; 40 a control assembly; 41 a control chip; 42 main control board; a 43 battery; 44 charging terminals; a 45 hall switch; a magnetic element 46; 50 an atomizing assembly; 51 an atomization seat; 52 atomizing sheets; 60 upper cover; 61 slide bar; 62 limit protrusions; a 70 bottom cover; 71 a bracket.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 10, in an embodiment of the invention, a method for preparing photocatalyst particles includes the following steps: firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm; secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal; step three, spraying nano titanium dioxide hydrosol on the surface of the crystal after the treatment in the step two; step four, baking the crystal stone treated in the step three at a high temperature; and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles.
Specifically, in order to utilize the photocatalytic effect in portable miniaturized portable equipment, it is preferable to select a spinel with a diameter of 1-3 mm, and more nano titanium dioxide particles can be loaded by utilizing a relatively large specific surface area of the small-particle quartz, so that the catalytic effect of the photocatalyst is improved. In addition, the cost of the crystal stone with smaller diameter is lower, and the production cost can be reduced. The crystal is preferably selected from natural crystal, then artificially synthesized regenerated crystal, and again, artificially melted crystal. The preparation methods of the different crystal stones serving as the base materials are the same, the photocatalytic reactions of the photocatalyst particles of the final product are basically the same, and the corresponding photocatalytic reaction effect can be achieved as a whole.
In addition, the nano titanium dioxide hydrosol can be configured by using a configuration scheme in the prior art, such as the following configuration scheme of the nano titanium dioxide hydrosol: butyl titanate is taken as a raw material, a certain amount of butyl titanate is taken to be dissolved in anhydrous acetaldehyde, acetylacetone serving as an inhibitor is added to delay the strong hydrolysis of the butyl titanate, and under the strong stirring, mixed solution of nitric acid, deionized water and absolute ethyl alcohol is dripped into the mixed solution, so that stable nano titanium dioxide hydrosol with the particle size of 37-100nm is obtained. The invention does not relate to the improvement of the nano titanium dioxide hydrosol per se, and therefore, the description is not repeated.
Secondly, it will be appreciated that in order to achieve a better treatment of the material, a corresponding cleaning step may be added. For example, in the first step, ultrasonic cleaning is performed on the selected crystal; for example, in the fifth step, the cooled quartz stone is ultrasonically cleaned. The corresponding ultrasonic cleaning can be performed using existing equipment in the prior art, and thus will not be described in detail.
As shown in fig. 1, in one embodiment, a method of preparing photocatalyst particles includes the steps of:
firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm;
secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal; a rotary plasma surface treatment machine with the power of 600W can be used for uniformly treating the surface of the spinelle for 3 minutes;
step three, spraying the nano titanium dioxide hydrosol on the surface of the crystal stone after the treatment in the step two; the concentration of nano titanium dioxide particles in the nano titanium dioxide hydrosol is 15%, and the nano titanium dioxide hydrosol with the concentration of 15% is sprayed on the surface of the spinelle material by using a spray gun;
step four, baking the crystal stone treated in the step three at a high temperature by using a muffle furnace; the baking temperature of high-temperature baking is 1200-1300 ℃, and the baking time of the high-temperature baking is 30 minutes;
and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles, wherein the cooling mode is natural cooling.
In another embodiment, as shown in fig. 1, a method of preparing photocatalyst particles, comprises the steps of:
firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm;
secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal; a rotary plasma surface treatment machine with the power of 600W can be used for uniformly treating the surface of the crystal for 2 minutes;
step three, spraying nano titanium dioxide hydrosol on the surface of the crystal after the treatment in the step two; the concentration of nano titanium dioxide particles in the nano titanium dioxide hydrosol is 5%, and the nano titanium dioxide hydrosol with the concentration of 5% is sprayed on the surface of the spinelle material by using a spray gun;
step four, baking the crystal stone treated in the step three at a high temperature by using a muffle furnace; the baking temperature of high-temperature baking is 1100-1200 ℃, and the baking time of the high-temperature baking is 45 minutes;
and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles, wherein the cooling mode is slow cooling. The slow cooling may be performed using various slow cooling means known in the art, such as furnace-by-furnace cooling, or using special cooling equipment. The present invention does not involve improvements to the slow cooling technique itself and is therefore not described in detail.
In this embodiment, the baking temperature is reduced, and thus the baking time is correspondingly prolonged.
In yet another embodiment, as shown in fig. 1, a method of preparing photocatalyst particles, comprises the steps of:
firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm;
secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal; a rotary plasma surface treatment machine with the power of 600W can be used for uniformly treating the surface of the crystal for 6 minutes;
step three, spraying nano titanium dioxide hydrosol on the surface of the crystal after the treatment in the step two; the concentration of nano titanium dioxide particles in the nano titanium dioxide hydrosol is 20%, and the nano titanium dioxide hydrosol with the concentration of 20% is sprayed on the surface of the spinelle material by using a spray gun;
step four, baking the crystal stone treated in the step three at a high temperature by using a muffle furnace; the baking temperature of the high-temperature baking is 1300 ℃, and the baking time of the high-temperature baking is 15 minutes;
and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles, wherein the cooling mode is natural cooling.
In this embodiment, the baking temperature is high, so that the baking time can be reduced correspondingly.
In addition, preferably, when the photocatalyst particles are produced, the finished product of the crystal particles prepared by the method or any of the embodiments can be used as a photocatalyst, so that corresponding photocatalytic reaction can be generated under the irradiation of ultraviolet light, corresponding oxidation-reduction reaction can be generated, and the corresponding product of the oxidation-reduction reaction can be utilized for disinfection and sterilization.
As shown in fig. 2 to 10, an apparatus for applying photocatalyst particles includes a water tank 10 having a liquid stored therein, micro-crystal particles 23 installed inside the water tank 10 and immersed by the liquid, an excitation light source 30 emitting light to irradiate the micro-crystal particles 23, and a control unit 40 for supplying power to the excitation light source 30 and controlling the excitation light source 30 to be turned on and off, the micro-crystal particles 23 are configured as photocatalyst particles having nano-titania particles supported thereon, the excitation light source 30 is configured as an ultraviolet lamp 31, and the light emitted from the excitation light source 30 is irradiated on the photocatalyst particles, thereby causing the photocatalyst particles to undergo a photocatalytic oxidation-reduction reaction.
Specifically, in one of the simplest application device assembling schemes, only the microcrystalline particles 23 are placed in the water tank 10 and immersed by the liquid, and then the control component 40 is used to control the excitation light source 30, so that the excitation light source 30, such as the ultraviolet lamp 31, emits corresponding light to irradiate the microcrystalline particles 23, so that the photocatalyst on the microcrystalline particles 23 generates corresponding photocatalytic reaction, for example, the nano titanium dioxide particles on the microcrystalline particles 23 generate corresponding oxidation-reduction reaction products under the irradiation of the ultraviolet light, and thus the liquid is disinfected and sterilized.
Second, in order to more optimally and conveniently use the application device, an upper cover 60 and a lower cover 70 may be provided on the device, a bracket 71 is installed in the lower cover 70, and the water tank 10 may be fixed to the bracket 71. In order to better utilize the liquid, a corresponding atomizing assembly 50 can be arranged on the water tank 10 to atomize the liquid in the water tank 10, so that water mist can be sprayed out, and particularly, the water mist can be used for supplementing the skin. It will be appreciated that in order to allow light to impinge smoothly on the microcrystalline particles 23 within the tank 10, the housing of the tank 10 may be made of a transparent material, thereby facilitating the passage of light. Of course, it is also possible to provide a light-transmitting body 16 only at the position of the housing of the water tank 10 between the excitation light source 30 and the micro-particles 23, so that light can pass through the light-transmitting body 16 to be irradiated on the micro-particles 23, and the rest of the water tank 10 is provided to be non-transparent, thereby preventing ultraviolet rays from leaking out of the water tank 10.
As shown in fig. 2 to 4, preferably, the water tank 10 is provided with an atomization assembly 50, the atomization assembly 50 is provided with an atomization seat 51 and an atomization sheet 52, and the atomization sheet 52 is movably connected to the atomization seat 51 and performs atomization treatment on the liquid entering the atomization seat 51; the water inlet end of the atomizing seat 51 is communicated with the cavity of the water tank 10 for storing liquid, so that the liquid can enter the atomizing seat 51, and the mist outlet end of the atomizing seat 51 is communicated with the external space, so that the atomized water mist can be sprayed into the external space.
Specifically, the housing of the water tank 10 may further be provided with a mist outlet 15, and after the atomizing assembly 50 atomizes the liquid, atomized water mist may pass through the mist outlet 15, so as to spray out the water tank 10, and further, the atomized water mist may be dispersed in air, and may also be directly dispersed on the skin for moisturizing and nursing. In addition, the atomizing assembly 50 preferably employs a high frequency oscillating type atomizing element, so that the water mist can be sprayed out for a certain distance during the atomization process, and the water mist can be better and uniformly covered on the skin, thereby facilitating perfect water supplementing nursing of the skin.
As shown in fig. 2 and 7, preferably, the water tank 10 may further be provided with a microcrystalline box body 20 and a microcrystalline box cover 21, where the microcrystalline particles 23 are placed inside the microcrystalline box body 20, and the microcrystalline box cover 21 is buckled on the microcrystalline box body 20, so as to form a limiting effect on the microcrystalline particles 23; the microcrystalline case body 20 and the microcrystalline case cover 21 are respectively provided with a through hole 22, and the through holes 22 are used for passing light emitted by the excitation light source 30 or liquid in the water tank 10.
Specifically, in order to make the light emitted by the excitation light source 30 irradiate on the microcrystal particles 23 as much as possible, the microcrystal particles 23 can be loaded into the preset microcrystal box body 20, and the microcrystal particles 23 are limited in a certain space through the microcrystal box cover 21, so that the ultraviolet light emitted by the ultraviolet lamp 31 irradiates on the nano titanium dioxide particles as much as possible, and a better photocatalytic reaction is generated.
As shown in fig. 8 to 10, preferably, an upper cover 60 and a bottom cover 70 which are mutually separable to form an abutting state may be further provided, a bracket 71 is provided in the bottom cover 70, the bracket 71 is fixedly connected inside the bottom cover 70, the control assembly 40 is fixedly connected on the bracket 71, one end of the water tank 10 is fixedly connected on the bracket 71, the other end of the water tank 10 is provided with a water inlet 11 and a sealing cover 12, the water inlet 11 is communicated with a cavity of the water tank 10 for storing liquid, and the sealing cover 12 is detachably buckled and connected on the water inlet 11; the upper cover 60 is movably sleeved on the outer wall of the water tank 10.
Specifically, in the initial state of the application device, the upper cover 60 and the lower cover 70 are relatively tightly abutted together, while the application device is in the closed state. When the user needs to use the application device to supplement water to the skin, the upper cover 60 can be pulled to move a certain distance so as to open the application device, and at this time, as shown in fig. 9, the application device is arranged in a certain space between the upper cover 60 and the bottom cover 70 so as to expose the mist outlet 15 of the water tank 10, the atomization assembly 50 atomizes the liquid in the water tank 10, and the atomized water mist is sprayed from the mist outlet 15 so as to be emitted into the air or onto the skin for water supplement care.
As shown in fig. 2, preferably, the control assembly 40 is provided with a control chip 41, a main control board 42, a battery 43 and a charging terminal 44 which are electrically connected with each other, the main control board 42 and the battery 43 are respectively and fixedly connected on the bracket 71, the control chip 41 and the charging terminal 44 are fixedly connected on the main control board 42, and the excitation light source 30 is fixedly connected on the main control board 42 and electrically connected with the control chip 41.
Specifically, the control chip 41 may use a processor chip or a single-chip microcomputer chip in the prior art, and set a corresponding control program in the prior art, so as to perform corresponding control on the atomizing assembly 50 and the excitation light source 30. The main control board 42 may use a circuit board in the prior art, and corresponding electronic components are mounted on the main control board 42. In addition, the control assembly can be provided with a corresponding voltage boosting circuit (not shown in the figure), so that the voltage of the battery is boosted, and the atomization assembly and the excitation light source can be conveniently driven. The battery 43 is preferably a rechargeable lithium battery 43 and can be charged through a charging terminal 44, and it is understood that a charging management circuit for the lithium battery 43 in the prior art is also provided in the control chip 41. In addition, the excitation light source 30 may be directly mounted on the main control board 42, or may be fixedly connected to the bracket 71, and electrically connected to the control chip 41 through a corresponding circuit.
As shown in fig. 2 to 4, preferably, the control assembly 40 is provided with a hall switch 45 and a magnetic element 46, the hall switch 45 is fixedly connected to the water tank 10, and the hall switch 45 is electrically connected to the control assembly 40; the magnetic element 46 is fixedly connected to the upper cover 60, and the upper cover 60 moves for a certain distance to enable the magnetic element 46 to synchronously move for the same distance, so that the magnetic element 46 is sensed by the Hall switch 45 and sends out corresponding opening and closing signals, and the control assembly 40 receives the opening and closing signals of the Hall switch 45 to open or close the excitation light source 30 and the atomization assembly 50.
Specifically, by arranging the magnetic element 46 inside the upper cover 60, and arranging the hall switch 45 on the water tank 10, when the upper cover 60 is pulled to move a certain distance to enable the magnetic element 46 to synchronously move a certain distance, the hall switch 45 senses the magnetic element 46 and sends a corresponding signal to the control chip 41, after the control chip 41 receives the corresponding signal, the control chip 41 can control the atomizing assembly 50 to start atomization operation, and can also control the excitation light source 30 to be electrified to emit light to irradiate on the microcrystalline particles 23, so that the whole application device is started. It will be appreciated that when the skin is replenished, the operation is generally only required for a certain period of time, and the operation is not required to be continued all the time, so that the corresponding timing parameters, such as setting the timing time to 25 seconds, can be set in the control chip 41, and the operation is automatically stopped after the application device is operated for 25 seconds. If the user still needs to continue to operate the application device, the upper cover 60 can be pushed to restore the upper cover 60 to the initial state shown in fig. 8 from the new state, and then the upper cover 60 is moved a certain distance from the new state of pulling the upper cover 60, so that the upper cover 60 is in the working state shown in fig. 9, and then the operation is started from the new state, and water is replenished from the new atomization state. It will be appreciated that if the user wants to stop while the application device is running, the user may directly push the upper cover 60 to close the upper cover 60, and the application device will stop running from the new state to the initial state shown in fig. 8. In addition, the magnetic element 46 may preferably be provided as a magnet block.
As shown in fig. 5 and 6, preferably, the outer sidewall of the water tank 10 is provided with a sliding groove 13 and a limiting block 14, the inner sidewall of the upper cover 60 is provided with a sliding bar 61 and a limiting protrusion 62, and when the upper cover 60 is sleeved on the water tank 10, the sliding bar 61 and the sliding groove 13 are matched with each other, so that the sliding bar 61 slides in the sliding groove 13 to enable the upper cover 60 to move a certain distance along the axial direction of the water tank 10; the stopper projection 62 and the stopper 14 are engaged with each other so that the movement of the upper cover 60 in the axial direction of the water tank 10 is limited to the corresponding positions.
Specifically, in order to optimize the use experience of the user, the corresponding sliding groove 13, the limiting block 14, the sliding bar 61 and the limiting protrusion 62 may be provided, so that when the user pulls or pushes the upper cover 60, the corresponding limiting block 14 and the limiting protrusion 62 may perform a certain limiting effect on the moving position of the upper cover 60, so that the user has better feedback in the moving process, and thus, the opening state or the closing state of the application device when the upper cover 60 is used for opening or closing can be clearly felt.
When in use, the crystal stone is prepared according to the preparation method, so as to obtain the microcrystal particles 23 loaded with the nano titanium dioxide particles, and then the microcrystal particles 23 are filled into the microcrystal box body 20 and fixedly connected in the water storage cavity of the water tank 10.
The sealing cap 12 of the water tank 10 is then pulled out, and liquid is injected into the water tank 10 at the water inlet 11, and the liquid is allowed to immerse the microcrystalline particles 23. The liquid is preferably purified or filtered water to prevent clogging of the atomizing assembly 50 and affecting the service life. The battery 43 in the control unit 40 should also be charged with a certain electric power by inserting an external charging wire into the charging terminal 44, so that the atomizing unit 50 and the excitation light source 30 can be driven.
When the application device needs to be started, the upper cover 60 is pulled to move a certain distance, so that the magnetic element 46 moves synchronously and moves to the sensing area of the Hall switch 45, and the Hall switch 45 senses the magnetic element 46 and sends out corresponding signals to the control chip 41. After receiving the corresponding signal from the hall switch 45, the control chip 41 turns on the power supply of the atomizing assembly 50 and the excitation light source 30, so that the atomizing assembly and the excitation light source start to operate. The ultraviolet lamp 31 emits corresponding ultraviolet light to irradiate on the microcrystal particles 23, so that the nanometer titanium dioxide particles on the microcrystal particles 23 generate corresponding photocatalysis reaction, thereby generating oxidation-reduction reaction of the photocatalyst and further sterilizing and disinfecting the liquid.
At this time, the atomizing assembly 50 also operates synchronously, so that the liquid can be atomized and sprayed with water mist to be emitted into the external space from the mist outlet 15 or to be emitted onto the skin of a user for corresponding water supplementing care. During the photocatalytic reaction, a part of the oxidation-reduction reaction products are also emitted to the skin of a user along with the water mist, so that corresponding sterilization and nursing are carried out on the skin.
When the application device is operated for a certain period of time, the control chip 41 may automatically stop the operation of the application device according to a preset operation time. The user can also push the upper cover 60 to restore it to the original state, thereby closing the application device.
Therefore, the improvement of the invention realizes miniaturization of the photocatalyst particles, improves the service life and the catalytic effect of the photocatalyst particles, and can be used in miniaturized portable equipment to sterilize and disinfect liquid in the portable equipment, thereby improving the use safety of the equipment and improving the safety of a user when using the portable equipment to supplement water.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (13)
1. A method for preparing photocatalyst particles, comprising the steps of:
firstly, selecting a crystal stone, wherein the diameter of the crystal stone is 1-3 mm;
secondly, carrying out plasma surface treatment on the crystal, and improving the surface adhesive force of the crystal;
step three, spraying nano titanium dioxide hydrosol on the surface of the crystal after the treatment in the step two;
step four, baking the crystal stone treated in the step three at a high temperature;
and fifthly, cooling the crystal stone treated in the step four to obtain a finished product of the photocatalyst particles.
2. The method for preparing photocatalyst particles according to claim 1, wherein the treatment time of the plasma surface treatment is 2 to 6 minutes.
3. The method for preparing photocatalyst particles according to claim 1, wherein the concentration of the nano titania particles in the nano titania hydrosol is 5% -20%.
4. The method for preparing photocatalyst particles according to claim 1, wherein the baking temperature of the high-temperature baking is 1100 ℃ to 1300 ℃, and the baking time of the high-temperature baking is 15 minutes to 45 minutes.
5. The method for preparing photocatalyst particles according to claim 1, wherein in the first step, the selected quartz is subjected to ultrasonic cleaning; and step five, performing ultrasonic cleaning on the cooled crystal.
6. A photocatalyst particle, characterized in that the crystal particle produced by the production method according to any one of claims 1 to 5 is used as a photocatalyst.
7. The application equipment of photocatalyst particles is characterized by comprising a water tank (10) with liquid stored therein, microcrystal particles (23) which are arranged in the water tank (10) and are immersed by the liquid, an excitation light source (30) which emits light to irradiate the microcrystal particles (23), and a control component (40) which provides power for the excitation light source (30) and controls the excitation light source (30) to be opened and closed, wherein the microcrystal particles (23) are arranged as photocatalyst particles, the excitation light source (30) is arranged as an ultraviolet lamp (31), and the light emitted by the excitation light source (30) irradiates on the photocatalyst particles, so that the photocatalyst particles generate photocatalytic oxidation-reduction reaction.
8. The photocatalyst particle application device according to claim 7, wherein an atomization assembly (50) is arranged on the water tank (10), the atomization assembly (50) is provided with an atomization seat (51) and an atomization sheet (52), the atomization sheet (52) is electrically connected with the control assembly (40), and the atomization sheet (52) is movably connected with the atomization seat (51) and performs atomization treatment on liquid entering the atomization seat (51); the water inlet end of the atomizing seat (51) is communicated with the cavity for storing liquid of the water tank (10), so that the liquid can enter the atomizing seat (51), and the mist outlet end of the atomizing seat (51) is communicated with an external space, so that mist after atomization treatment can be sprayed into the external space.
9. The application device of the photocatalyst particles according to claim 7, wherein a microcrystalline box body (20) and a microcrystalline box cover (21) are arranged in the water tank (10), the microcrystalline particles (23) are placed in the microcrystalline box body (20), and the microcrystalline box cover (21) is buckled on the microcrystalline box body (20), so that a limiting effect is formed on the microcrystalline particles (23); the microcrystal box body (20) and the microcrystal box cover (21) are respectively provided with a through hole (22), and the through holes (22) are used for passing through light rays emitted by the excitation light source (30) or liquid in the water tank (10).
10. The photocatalyst particle application device according to claim 7, further comprising an upper cover (60) and a bottom cover (70), wherein the upper cover (60) and the bottom cover (70) are abutted against each other to form an initial state, a bracket (71) is arranged in the bottom cover (70), the bracket (71) is fixedly connected inside the bottom cover (70), the control assembly (40) is fixedly connected on the bracket (71), one end of the water tank (10) is fixedly connected on the bracket (71), the other end of the water tank (10) is provided with a water inlet (11) and a sealing cover (12), the water inlet (11) is communicated with a cavity for storing liquid of the water tank (10), and the sealing cover (12) is detachably buckled and connected on the water inlet (11); the upper cover (60) is movably sleeved on the outer wall of the water tank (10).
11. The device for applying the photocatalyst particles according to claim 10, wherein the control assembly (40) is provided with a control chip (41), a main control board (42), a battery (43) and a charging terminal (44) which are electrically connected with each other, the main control board (42) and the battery (43) are fixedly connected to the bracket (71), the control chip (41) and the charging terminal (44) are fixedly connected to the main control board (42), and the excitation light source (30) is fixedly connected to the main control board (42) and is electrically connected to the control chip (41).
12. The apparatus for applying photocatalyst particles according to claim 10, wherein the control assembly (40) is provided with a hall switch (45) and a magnetic element (46), the hall switch (45) is fixedly connected to the water tank (10), and the hall switch (45) is electrically connected to the control chip (41); the magnetic element (46) is fixedly connected to the upper cover (60), the upper cover (60) moves for a certain distance to enable the magnetic element (46) to synchronously move for the same distance, so that the magnetic element is sensed by the Hall switch (45) and sends out corresponding opening and closing signals, and the control chip (41) receives the opening and closing signals of the Hall switch (45) and then opens or closes the excitation light source (30) and the atomization assembly (50).
13. The apparatus for applying photocatalyst particles according to claim 10, wherein a chute (13) and a stopper (14) are provided on an outer side wall of the water tank (10), a slide bar (61) and a stopper protrusion (62) are provided on an inner side wall of the upper cover (60), and when the upper cover (60) is fitted over the water tank (10), the slide bar (61) and the chute (13) are engaged with each other, so that the slide bar (61) slides in the chute (13) to move the upper cover (60) a certain distance in an axial direction of the water tank (10); the limit projection (62) and the limit block (14) are matched with each other, so that the upper cover (60) is limited in the corresponding position along the axial direction of the water tank (10).
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