CN112138537A - Preparation method of photocatalytic decomposition material and filter screen structure - Google Patents
Preparation method of photocatalytic decomposition material and filter screen structure Download PDFInfo
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- CN112138537A CN112138537A CN201910564933.6A CN201910564933A CN112138537A CN 112138537 A CN112138537 A CN 112138537A CN 201910564933 A CN201910564933 A CN 201910564933A CN 112138537 A CN112138537 A CN 112138537A
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- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 125
- 239000000463 material Substances 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 25
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000004132 cross linking Methods 0.000 claims description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- -1 bisazo benzene Chemical compound 0.000 claims description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 6
- 239000011941 photocatalyst Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 16
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- 210000004027 cell Anatomy 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
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- 239000002245 particle Substances 0.000 description 8
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 6
- 238000003421 catalytic decomposition reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
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- XTBIBWHDOKAJPB-UHFFFAOYSA-L 4-(4-diazoniophenyl)benzenediazonium;dichloride Chemical compound [Cl-].[Cl-].C1=CC([N+]#N)=CC=C1C1=CC=C([N+]#N)C=C1 XTBIBWHDOKAJPB-UHFFFAOYSA-L 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
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- 208000033999 Device damage Diseases 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
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- 238000006136 alcoholysis reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 239000003054 catalyst Substances 0.000 description 1
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- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
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- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- 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
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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Abstract
The invention provides a photocatalytic decomposition material, which comprises titanium dioxide, ruthenium trichloride and bisazobenzene, wherein a porous substrate is taken and dipped with the photocatalytic decomposition material to form a photocatalytic decomposition component, the photocatalytic decomposition component is taken to form a photocatalytic decomposition device, the photocatalytic decomposition device is arranged between net-shaped devices with thermoluminescent materials, a first power supply device is taken to electrify the net-shaped devices, so that the net-shaped devices are heated to emit light, the photocatalytic decomposition device is excited, and meanwhile, the photothermal materials in the photocatalytic decomposition device are started to heat and emit light, so that the net-shaped devices are heated to emit light, and the effect of photothermal intercommunication is achieved.
Description
Technical Field
The present invention relates to a method for preparing a photocatalytic material and a structure thereof, and more particularly, to a method for preparing a photocatalytic material and a filter structure using the photocatalytic material.
Background
Modern air pollution is more and more serious, and therefore air cleaning related products related to air cleaning are derived on the market, for example: the air cleaner is used for filtering or killing air pollutants and effectively improving the air cleanliness, and some air conditioners, heaters and other air conditioning equipment on the market are also provided with limited air cleaning functions.
The air cleaner generally comprises a fan and an air filter screen system, and the working principle is as follows: the fan in the machine (also called fan) makes the indoor air circularly flow, the polluted air passes through the filter screen in the machine to remove or adsorb various pollutants, so as to achieve the purpose of cleaning and purifying air, and the air cleaner has a plurality of different technologies and media, so that it can provide clean and safe air for users. The commonly used air purification technologies include HEPA high efficiency filtration technology, photo-plasma technology, adsorption technology, anion technology, negative oxygen ion technology, molecular complexation technology, titanium dioxide photocatalyst technology, electrostatic dust collection technology, active oxygen technology … …, etc., and the materials used in the air purifier mainly include photocatalyst, active carbon, synthetic fiber, HEPA high efficiency material, anion generator, etc. The existing air purifier mostly adopts a composite type, namely, a plurality of purification technologies and material media are adopted at the same time.
However, the above mentioned photo-catalytic air cleaner mainly uses titanium dioxide as catalyst, and the common photo-catalytic materials include gallium phosphide (GaP), gallium arsenide (GaAs), etc., and the most widely used is titanium dioxide (TiO2), which can be disinfected and sterilized by light energy. Titanium dioxide has two common crystal structures, namely a rutile phase and an anatase phase, and the anatase phase titanium dioxide has excellent photocatalyst activity, so most of photocatalyst researches are focused on the structure.
The ultraviolet light source is one of the consumable materials, and after being damaged, the ultraviolet light source needs to be replaced after being purchased by a user, so that the ultraviolet light source is very inconvenient.
Therefore, the invention develops a method for replacing the traditional ultraviolet lamp source by depositing special materials on the structure and electrifying the structure to make the structure emit light, the invention does not need to replace the lamp source of the air cleaner, a user does not need to disassemble the air cleaner for replacement, and the generation of consumable material cost is avoided.
According to the above, the present invention provides a method for preparing a photocatalytic decomposition material and a filter structure using the photocatalytic decomposition material, wherein a thermoluminescent material is deposited on a mesh device, and a porous substrate is dip-coated with a photocatalytic decomposition component material to form a photocatalytic decomposition component, the photocatalytic decomposition component is disposed in the photocatalytic decomposition device and is combined with the mesh device to form a filter structure using the photocatalytic decomposition component, the mesh device is connected to a power supply device to supply power to heat the mesh device for luminescence, and activates the photocatalytic decomposition device to purify air, and the filter structure using the photocatalytic decomposition material and the mesh device provide a photo-thermal bidirectional energy conversion effect.
Disclosure of Invention
An object of the present invention is to provide a photocatalytic decomposition element made of a photocatalytic decomposition material containing titanium dioxide, ruthenium trichloride and bisazobenzene, in which titanium dioxide is a photocatalytic material, ruthenium trichloride is a thermal decomposition material, and bisazobenzene is a photothermal material.
Another objective of the present invention is to provide a filter screen structure using photocatalytic decomposition materials, wherein the photocatalytic decomposition components are combined into a photocatalytic decomposition device, and the filter screen device converts photo-thermal bidirectional energy into thermal energy, thereby achieving a continuous use effect.
In view of the above object, the present invention provides a method for preparing a photocatalytic decomposition material, comprising the steps of: taking titanium isopropoxide and ethanol to perform a cross-linking reaction to form titanium dioxide; and mixing the titanium dioxide with ruthenium trichloride and bisazo benzene to form a photocatalytic decomposition material.
In view of the above object, the present invention provides a filter screen structure using a photocatalytic decomposition material, the structure comprising: a mesh device comprising a first mesh component and a second mesh component, the mesh device being coated with a thermoluminescent material, wherein the thermoluminescent material is one or any combination of lithium fluoride, calcium fluoride and magnesium chloride; the photocatalytic decomposition device is arranged between the first reticular component and the second reticular component and comprises a frame body, a first film, a second film and a plurality of photocatalytic decomposition components, wherein the frame body is respectively provided with a first opening and a second opening at two sides, the first film and the second film are respectively arranged in the first opening and the second opening of the frame body to form an accommodating space, the photocatalytic decomposition components are arranged in the accommodating space, further, the photocatalytic decomposition components comprise a photocatalytic decomposition material and a porous substrate, the photocatalytic decomposition material comprises titanium dioxide, ruthenium trichloride and bisazobenzene, and the bisazobenzene is a photo-induced heating material; when at least one power supply device provides power to heat the first reticular component, the thermoluminescent material on the first reticular component is heated and luminesces to generate a first light source, the first light source is transmitted to the photocatalytic decomposition device through the first space, the titanium dioxide is excited by the light source to generate a photocatalytic decomposition reaction, the photothermal material generates a heating reaction to form a heat source, the ruthenium trichloride generates the photocatalytic decomposition reaction through the heat source, the heat source is transmitted to the second reticular component through the second space, the second reticular component is heated to form a second light source, and the second light source is transmitted to the photocatalytic decomposition device through the second space.
Other features and embodiments of the present invention will be described in detail below with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1A is a schematic flow chart diagram of one embodiment of the present invention;
FIG. 1B is a schematic view of a photocatalytic decomposition assembly in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structural state of an embodiment of the present invention;
FIG. 3 is an exploded view of a photocatalytic decomposition device according to an embodiment of the present invention; and
fig. 4 is a schematic diagram of a usage status of an embodiment of the present invention.
Description of the symbols
10 mesh device 12 first mesh component 14 second mesh component
20 first power supply device 30 photocatalytic decomposition device 32 frame
322, a first opening 326 and a second opening of the accommodation space 324
34 first film 36 second film 38 photocatalytic decomposition assembly
382 porous base material 384 photocatalytic decomposition material Voc contains VOC gas
CA clean air 40 thermoluminescent material
50 second power supply device
S1 crosslinking reaction of titanium isopropoxide and ethanol to form titanium dioxide
S3 mixing titanium dioxide with ruthenium trichloride and bisazo benzene to form photocatalytic decomposition material
Detailed Description
The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings.
In the prior art, under the irradiation of ultraviolet light, the photocatalyst converts the light energy into chemical energy to promote the decomposition of organic matters and decompose particles and odor in the air, thereby achieving the effects of decontamination, deodorization, etc., and the ultraviolet light source is one of the consumables.
The structure of the invention has the function of converting photothermal bidirectional energy, and is characterized in that a thermoluminescent material is deposited on a reticular device, in addition, a porous substrate is taken and coated with a photocatalytic decomposition material to form a photocatalytic decomposition component, the photocatalytic decomposition component is arranged in the photocatalytic decomposition device and is combined with the reticular device to form a filter screen structure using the photocatalytic decomposition material, the reticular device is connected with a power supply device to supply power, the reticular device is heated to emit light, and the photocatalytic decomposition device is excited to activate the light catalytic decomposition device, thereby achieving the function of purifying air.
Hereinafter, the present invention will be described in detail by illustrating various embodiments of the present invention through the drawings. The inventive concept may, however, be embodied in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein.
Please refer to fig. 1A, which is a flowchart illustrating an embodiment of the present invention, including the steps of:
step S1: taking titanium isopropoxide and ethanol to perform a crosslinking reaction to form titanium dioxide; and
step S3: titanium dioxide is mixed with ruthenium trichloride and bisazo benzene to form the photocatalytic decomposition material.
First, in step S1, a cross-linking reaction is performed between titanium isopropoxide and ethanol to form titanium dioxide.
In this embodiment, the solid content of the titanium isopropoxide before the reaction is 45 wt%, and after the alcoholysis reaction of the titanium isopropoxide and the ethanol, the temperature is increased to 180 ℃ and the heating is performed for 45min, so as to generate the crosslinking reaction.
In this embodiment, the titanium dioxide is mixed with the powder of ruthenium trichloride and bisazo-benzene during crosslinking to form a photocatalytic decomposition material 384, and in the above process, the ruthenium trichloride and the bisazo-benzene are embedded (imbedding) in the gaps between the atoms of the titanium dioxide.
In addition, the ruthenium trichloride (RuCl)3) Is powder with a particle size of 80nm, and the bisazo benzene (BPBD, Biphenyl-4,4' -bis (diazonium) dichloride) is also selected as powder with a particle size of 90nm in the embodiment, and further comprises the following steps after step S3:
step S32: the porous substrate is dip coated with a photocatalytic decomposition material to form a photocatalytic decomposition component.
A porous substrate 382 is a porous material, which is a material having a network structure of interconnected or closed pores, the boundaries or surfaces of which are formed by pillars or plates. Typical cell structures are divided into two-dimensional structures formed by gathering a large number of polygonal cells on a plane and three-dimensional structures formed by gathering a large number of polyhedral cells in space, in the embodiment, a three-dimensional structure formed by gathering a large number of polyhedral cells in space is selected, the three-dimensional structure is usually called as foam, and the solid bodies forming the cells are only present at the boundaries of the cells (namely, the cells are communicated), and the three-dimensional structure is called as open cells; closed cells are called if the surface of the cells is also solid, i.e. each cell is completely separated from the surrounding cells; some holes are semi-open and semi-closed, the porous material can be divided into microporous material (the hole diameter is less than 2nm), mesoporous material (the hole diameter is between 2 and 50nm) and macroporous material (the hole diameter is more than 50nm) by the hole diameter, the hole diameter of the porous base material 382 used in the embodiment is 700 +/-30 nm, and the specific surface area is 60m2The porous substrate 382 is a macroporous material with a particle size of 8mm and a bulk density of 400g/L, and is made of silica gel in this embodiment, but not limited thereto.
Since the ruthenium trichloride powder used in this embodiment has a particle size of 80nm and the bisazobenzene powder has a particle size of 90nm, the porous substrate 382 used in this embodiment is made of a material selected from silica gel, which has a pore diameter of 700. + -.30 nm and a specific surface area of 60m2The particle size is 8 mm/g, and since the pore diameter of the porous substrate 382 is larger than the particle size of the powder of ruthenium trichloride and bisazobenzene, the pores of the porous substrate 382 will not be blocked by ruthenium trichloride and bisazobenzene after the porous substrate 382 is dipped in the photocatalytic decomposition material 384 containing the powder of ruthenium trichloride and bisazobenzene.
The porous substrate 382 is dip-coated on the photocatalytic decomposition material 384, wherein the ratio of the porous substrate 382 to the photocatalytic decomposition material 384 is 1:2 (i.e. when the porous substrate 382 uses 1Kg, the photocatalytic decomposition material 384 uses 2Kg), the photocatalytic decomposition material 384 is placed in the cell body, and the bottom of the cell is inflated to ensure that the photocatalytic decomposition material 384 can be uniformly coated on the surface layer of the porous substrate 382 to form a photocatalytic decomposition device 38, please refer to fig. 1B, which is a schematic view of the photocatalytic decomposition device according to an embodiment of the present invention. After step S32, the method further includes the steps of:
step S34: and carrying out a heating procedure to solidify the photocatalytic decomposition material on the surface of the porous substrate.
Wherein, the step S34 is a heating procedure, in which the porous substrate 382 subjected to the dip coating in the step S33 is heated at 180 ℃ for 45 minutes, and the step S34 is to strengthen and cure the photocatalytic decomposition material 384 on the porous substrate 382.
Continuing from the above, after the heating process is completed, in order to confirm whether the photocatalytic decomposition material 384 has cured on the porous substrate 382, the present example was tested using SEM-EDX to confirm a coating thickness of 150nm, wherein the ruthenium trichloride concentration by weight was 0.2%, the BPBD concentration by weight was 0.3%, and the titanium dioxide concentration by weight was 1.2%.
In the following description, please refer to fig. 2, which is a schematic structural state diagram according to an embodiment of the present invention, and the structure includes a mesh structure 10, a first power supply device 20, a photocatalytic decomposition device 30, and a second power supply device 50.
In the present embodiment, the mesh-shaped device 10 includes a first mesh-shaped element 12 and a second mesh-shaped element 14, the photocatalytic decomposition device 30 is disposed between the first mesh-shaped element 12 and the second mesh-shaped element 14, the photocatalytic decomposition device 30 and the first mesh-shaped element 12 have a first space D1, and the photocatalytic decomposition device 30 and the second mesh-shaped element 14 have a second space D2.
Wherein, the mesh device 10 is coated with a thermoluminescent material 40 selected from one or any combination of lithium fluoride, calcium fluoride and magnesium chloride.
In addition, referring to fig. 3, which is an exploded schematic view of a photocatalytic decomposition device according to an embodiment of the present invention, the photocatalytic decomposition device 30 includes a frame 32, a first thin film 34, a second thin film 36, and a plurality of photocatalytic decomposition elements 38, the frame 32 has a first opening 324 and a second opening 326 on two sides, the first thin film 34 and the second thin film 36 are respectively disposed on the first opening 324 and the second opening 326 of the frame 32 to form an accommodating space 322, the photocatalytic decomposition elements 38 are disposed in the accommodating space 322, the photocatalytic decomposition elements 38 include a photocatalytic decomposition material 384 and a porous substrate 382, the photocatalytic decomposition material 38 includes a titanium dioxide, a ruthenium trichloride, and a bisazobenzene, and the bisazobenzene is a photothermal material.
In the embodiment, the first film 34 and the second film 36 are selected from PE non-woven fabrics, which are white, transparent and air-permeable, and the frame 32 of the embodiment is made of SUS304, the first opening 324 of the frame 32 is first sealed with the first film 34 to form the accommodating space 322, the photocatalytic decomposition components 38 are put in the accommodating space 322, and finally the second film 36 is taken out to seal the second opening 326 to form the photocatalytic decomposition device 30.
Referring to fig. 4, which is a schematic view illustrating a usage status of an embodiment of the present invention, when air has a VOC-containing gas (denoted as VOC) passing from one side of the first mesh component 12 into the first space D1, a user turns on a first power supply device 20 to provide power to heat the first mesh component 12, so that the thermoluminescent material 40 on the first mesh component 12 is heated and luminesced to generate a first light source, the first light source is transmitted to the photocatalytic decomposition device 30 through the first space D1, and the titanium dioxide is excited by the first light source to generate a photocatalytic decomposition reaction, so that the photocatalytic decomposition device 30 decomposes the VOC-containing gas VOC in the air, so that the content of toxic VOC in the air is reduced, and the air becomes cleaner, thereby generating a clean air CA.
Meanwhile, the photo-induced heating material contained in the photo-catalytic decomposition device 30 generates a heating reaction to form a heat source, the heat source enables the ruthenium trichloride to generate a thermal catalytic decomposition reaction to decompose the VOC-containing gas VOC in the air, and simultaneously the heat source is transmitted to the second net-shaped component 14 through the second space D2, so that the second net-shaped component 14 is heated to form a second light source, and then the second light source is transmitted to the photo-catalytic decomposition device 30 through the second space D2, and the energy cycle process is repeated after the second light source generates heat after the second light source is received by the photo-catalytic decomposition device 30.
In the above process, when the photocatalytic decomposition device 30 transfers the heat source to the second mesh component 14, a part of the heat source is also transferred back to the first mesh component 12 through the first space D1, so that the first mesh component 12 emits light under the influence of the heat source and then transfers the light back to the photocatalytic decomposition device 30, and the filter structure using the photocatalytic decomposition component of the present invention can achieve the effect of photo-thermal energy circulation.
Wherein the VOC-containing gas Voc contains Toluene, PGME, PGMEA, Acetone and Ethyl Acetate, the concentration is 1000ppm respectively, after mixing and dilution with CDA (clean Dry air), the wind speed is 2.5m/s, the cross-sectional area is 1.0 square Meter, the wind quantity is 9000CMH (Cubic Meter per Hour) (5 VOC separate tests)
And the thermoluminescent material 40 of the present invention is deposited on the first mesh component 12 and the second mesh component 14 by deposition, wherein the first mesh component 12 and the second mesh component 14 are made of copper alloy in this embodiment, the used machine is a vacuum chamber with a magnetron sputtering target, the copper alloy mesh is fixed on the turntable of the vacuum chamber, the vacuum degree of the vacuum chamber is reduced to 10 × (-5) Torr, the coating is started, after 60min of coating time, the first mesh component 12 and the second mesh component 14 are taken out, the film thickness is 3um by applying SEM-EDX test, the completed first mesh component 12 is electrically connected to the first power supply device 20, so that the first mesh component 12 emits light after being powered on and heated, the first mesh component 12 and the second mesh component 14 can replace the conventional LED light source, and because the mesh device 10 has no problem of damage and need to be replaced as the conventional LED light source, therefore, the probability of device damage caused by consumable replacement by a user can be reduced.
The vacuum chamber is phi 1200 multiplied by H1100mm in size and is of a circular-section full-stainless-steel vertical front-opening square door structure, the vacuum chamber is made of 304 stainless steel with excellent material, the plate thickness is 8mm, and a coil pipe water cooling system is arranged outside the vacuum chamber, so that the vacuum chamber has high vacuum degree and high cleanliness, and the film forming purity of a film-coated workpiece is guaranteed.
In this embodiment, the second mesh component 14 further includes a second power supply device 50, and when the heat transferred by the photocatalytic decomposition device 30 is insufficient, the second power supply device 50 can provide electric energy to convert the electric energy into heat energy to heat and illuminate the second mesh component 14, so that the photocatalytic decomposition device 30 can generate an effect of decomposing harmful substances.
In addition, this example provides experimental data for one set of experimental groups and three sets of control groups, as shown in tables 1 to 5 below:
TABLE 1 results of tolumen Experimental data
TABLE 2 PGME Experimental data results
Table 3 PGMEA experimental data results
Table 4 Acetone experimental data results
Table 5 results of ethyl acetate experimental data
Experimental groups: the mesh-type device 10 of the present invention is used in combination with the photocatalytic decomposition device 30 of the present invention, wherein a first sampling point P1 is disposed in front of the first mesh-type element 12, and a second sampling point P2 is disposed behind the second mesh-type element 14, and it can be seen from tables 1 to 5 that the tolumene treatment efficiency, PGME treatment efficiency, PGMEA treatment efficiency, Acetone treatment efficiency, and ethyl acetate treatment efficiency of the filter screen structure of the photocatalytic decomposition device of the present invention are 92.4%, 93.8%, 95.4%, 96.5%, and 97.5%, respectively.
Control group 1: the mesh-shaped device 10 of the present invention is used in combination with the silica gel coated with titanium dioxide of the prior art, and similarly, the first sampling point P1 is disposed in front of the first mesh-shaped component 12, and the second sampling point P2 is disposed behind the second mesh-shaped component 14, so that it can be seen from tables 1 to 5 that the treatment efficiency of the mesh-shaped device 10 of the present invention in combination with the silica gel coated with titanium dioxide of the prior art is 62.1%, the treatment efficiency of PGME is 61.5%, the treatment efficiency of PGMEA is 62%, the treatment efficiency of Acetone is 60.7%, and the treatment efficiency of ethyl acetate is 60.9%.
Control group 2: using the LED light source of the prior art in combination with the photocatalytic decomposition device 30 of the present invention, similarly, the first sampling point P1 is disposed in front of the first mesh component 12, and the second sampling point P2 is disposed behind the second mesh component 14, as can be seen from tables 1 to 5, the processing efficiency of toluene, PGME, PGMEA, Acetone, and ethyl acetate of the LED light source of the prior art in combination with the photocatalytic decomposition device of the present invention is 62.8%, 63.6%, 62.1%, 60.2%, and 60.6%.
Control group 3: using the prior art LED light source to match the prior art silica gel coated with titanium dioxide, similarly, the first sampling point P1 is set in front of the first mesh component 12, and the second sampling point P2 is set behind the second mesh component 14, wherein the above table shows that the treatment efficiency of tolumene, PGME, PGMEA, and Acetone of the prior art LED light source and the prior art silica gel coated with titanium dioxide is 29.4%, 30.5%, 32.1%, 31%, and 30.6%.
As can be seen from the results of the experiments in tables 1 to 5, when the mesh-shaped device 10 of the present invention is used in combination with the photocatalytic decomposition device 30 manufactured by the present invention, a better air treatment effect can be achieved.
However, when the mesh-shaped device 10 of the present invention is used in combination with the conventional titanium dioxide-coated silica gel, the air treatment effect is weaker than that of the experimental group, compared to the experimental group, because the conventional titanium dioxide-coated silica gel does not have bisazobenzene (a photothermal material) as used in the present invention.
In addition, the LED light source of the prior art is used in combination with the photocatalytic decomposition device 30 of the present invention, and since the LED light source of the prior art can only excite the titanium dioxide (photocatalytic material) of the photocatalytic decomposition device 30 of the present invention, the air treatment effect is similar to that of the control group 1.
Finally, when using the silica gel of prior art coating titanium dioxide of prior art LED lamp source collocation prior art, can clearly see out in the air treatment result, filterable inefficiency, and because the LED lamp source has the life-span problem, need the user to carry out the consumptive material and change, consequently can derive the unexpected damage problem when consumptive material expense problem and change.
Therefore, the experiments conducted by the experimental group and the three control groups show that the filter screen structure of the invention has better effect on the air filtering part of VOC toxic substances compared with the filter screen in the prior art, does not need to replace lamp source consumables, and also avoids the problems of consumable cost and accidental damage during replacement in the prior art.
The method of the present invention, which is described above, is to prepare a photocatalytic decomposition material containing titanium dioxide, ruthenium trichloride and bisazobenzene, dip-coat silica gel onto the photocatalytic decomposition material to form a photocatalytic decomposition component, place the photocatalytic decomposition component in a photocatalytic decomposition device, deposit a thermoluminescent material on a mesh device, combine the mesh device with the photocatalytic decomposition device to form a filter screen structure using the photocatalytic decomposition material, connect the mesh device to a power supply to heat the mesh device to illuminate, activate the photocatalytic decomposition device to purify air, provide the mesh device with the thermoluminescent material, provide the photocatalytic decomposition device with the thermoluminescent material, energize the photocatalytic decomposition device to illuminate, transmit light to the photocatalytic decomposition device after energizing the mesh device to illuminate, and cause the thermoluminescent material in the photocatalytic decomposition device to act, then transferring heat to the reticular device and heating to generate a light source to form a cycle of light heating and heat luminescence, so that the device has the effect of converting photo-thermal bidirectional energy.
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the implementations of the present technology in any way, and those skilled in the art may make modifications or changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the present disclosure, but should be construed as the technology or implementations substantially the same as the present technology.
Claims (7)
1. A method for preparing a photocatalytic decomposition material, comprising the steps of:
taking titanium isopropoxide and ethanol to perform a cross-linking reaction to form titanium dioxide; and
mixing the titanium dioxide with ruthenium trichloride and bisazo benzene to form a photocatalytic decomposition material.
2. The method of claim 1, further comprising the step of dip-coating a porous substrate on the photocatalytic decomposition material to form a photocatalytic decomposition element.
3. The method of claim 2, wherein the step of dip-coating the porous substrate on the photocatalytic decomposition material to form a photocatalytic decomposition element further comprises the steps of: and carrying out a heating procedure to solidify the photocatalytic decomposition material on the surface of the porous substrate.
4. The method of preparing a photocatalytic decomposition material according to claim 2, wherein the photocatalytic decomposition material is dip-coated on the surface of the porous substrate to a thickness of 150 nm.
5. A screen structure for decomposing a material using a photocatalyst, the structure comprising:
a mesh device comprising a first mesh component and a second mesh component, the mesh device being coated with a thermoluminescent material, wherein the thermoluminescent material is one or any combination of lithium fluoride, calcium fluoride and magnesium chloride; and
a photocatalytic decomposition device arranged between the first reticular component and the second reticular component to form a first space and a second space respectively, the photocatalytic decomposition device comprises a frame body, a first film, a second film and a plurality of photocatalytic decomposition components, the frame body is provided with a first opening and a second opening on two sides respectively, the first film and the second film are arranged on the first opening and the second opening of the frame body respectively to form a containing space, the photocatalytic decomposition components are arranged in the containing space, furthermore, the photocatalytic decomposition components comprise a photocatalytic decomposition material and a porous substrate, the photocatalytic decomposition material comprises titanium dioxide, ruthenium trichloride and bisazobenzene, and the bisazobenzene is a photo-induced heating material;
the first mesh component and the second mesh component form a first space and a second space respectively, the first space and the second space are heated by a first power supply device to generate a first light source by heating the thermoluminescent material on the first mesh component, the first light source is transmitted to the photocatalytic decomposition device through the first space, the titanium dioxide is excited by the light source to generate a photocatalytic decomposition reaction, the photothermal material generates a heating reaction to form a heat source, the ruthenium trichloride generates the thermocatalytic decomposition reaction by the heat source, the heat source is transmitted to the second mesh component through the second space to generate a second light source by heating the second mesh component, and the second light source is transmitted to the photocatalytic decomposition device through the second space.
6. The filter screen structure of claim 5, wherein the second mesh component further comprises a second power supply.
7. The filter screen structure according to claim 5, wherein the first and second films are PE non-woven fabrics, which are white transparent and have air permeability.
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