CN110743550A - Visible light composite catalytic material and novel air purifier - Google Patents
Visible light composite catalytic material and novel air purifier Download PDFInfo
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- CN110743550A CN110743550A CN201911102515.1A CN201911102515A CN110743550A CN 110743550 A CN110743550 A CN 110743550A CN 201911102515 A CN201911102515 A CN 201911102515A CN 110743550 A CN110743550 A CN 110743550A
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 35
- 230000001699 photocatalysis Effects 0.000 claims abstract description 147
- 238000001179 sorption measurement Methods 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000002500 ions Chemical class 0.000 claims description 38
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 5
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 69
- 238000007146 photocatalysis Methods 0.000 abstract description 13
- 238000004887 air purification Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 abstract description 5
- 238000006555 catalytic reaction Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000011941 photocatalyst Substances 0.000 description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 18
- 229910052802 copper Inorganic materials 0.000 description 18
- 239000010949 copper Substances 0.000 description 18
- 150000001450 anions Chemical class 0.000 description 9
- 239000000809 air pollutant Substances 0.000 description 8
- 231100001243 air pollutant Toxicity 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 241000700605 Viruses Species 0.000 description 6
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- 239000000969 carrier Substances 0.000 description 5
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- 239000000126 substance Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
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- 230000003993 interaction Effects 0.000 description 3
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- 238000005096 rolling process Methods 0.000 description 3
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- 210000002345 respiratory system Anatomy 0.000 description 1
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- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- B01J35/23—
-
- B01J35/39—
-
- B01J35/50—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catalysts (AREA)
Abstract
The invention provides a visible light composite catalytic material and a novel air purifier based on modified TiO2The composite material with the graphene quantum dots can be matched with added metal components, and can be subjected to chemical reaction with various harmful gases under the irradiation of a visible light or white light source to achieve the air purification effect. Because the photocatalysis technology does not have the adsorption saturation phenomenon, and can carry out catalytic reaction under the white light source, can improve purification efficiency, reduce the light source cost, avoid the radiation damage that traditional ultraviolet irradiation brought for the novel air purifier who adopts this visible light composite catalysis material preparation's purification efficiency obtains improving.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a visible light composite catalytic material and a novel air purifier.
Background
Limited spaces with dense population activities, individual production workshops and newly-decorated houses are 'serious disaster areas' with dirty and even toxic and harmful gas accumulation, the air in the areas usually contains a large amount of particulate matters, TVOCs, viruses, bacteria and other substances, and the polluted air easily enters human bodies along with respiratory systems and damages various parts of the human bodies to different degrees. People living or working in these areas for a long time are repeatedly stimulated by these harmful substances, and the harm to the human body is permanent.
Along with the improvement of the life of people, people pay more and more attention to the problem of indoor air pollution, so that the air purifier is concerned and welcomed by more and more people. The air purifier is a product capable of adsorbing, decomposing and mineralizing various air pollutants (generally including dust, peculiar smell, formaldehyde, bacteria, allergen and the like) and effectively improving the air cleanliness. However, the existing air purifier in the market is mainly used for removing particulate matters, and even if the TVOC is treated, the effect is not satisfactory.
Disclosure of Invention
In order to overcome the problems, the invention aims to provide a visible light composite catalytic material, which improves the application range and purification efficiency of the catalytic material.
In order to achieve the above object, the present invention provides a visible light composite catalytic material, comprising: modified TiO2And (3) compounding with graphene quantum dots.
In some embodiments, further comprising: a metal.
In some embodiments, the metal is a transition group metal.
In some embodiments, the modified TiO2Is granular mixed crystal nano titanium dioxide; the modified TiO2The method comprises the following steps: nitrogen-doped nano titanium dioxide and metal-doped nano titanium dioxide.
In order to achieve the above object, the present invention also provides a novel air purifier having a photocatalytic component comprising the above visible light composite catalytic material.
In some embodiments, the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a first adsorption member located inside the housing and above the air inlet;
a photocatalytic member located inside the housing and above the first adsorption member; and a first electrical connection is realized between the first adsorption component and the photocatalytic component;
the negative ion component is positioned above the photocatalytic component, and a second electric connection is realized between the negative ion component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
In some embodiments, the photocatalytic component comprises: a light source and a photocatalytic body.
In some embodiments, the light source is a white light source.
In some embodiments, the photocatalytic body comprises a support and the visible light composite catalytic material formed on the support.
In some embodiments, the photocatalytic body is shaped from the visible light composite catalytic material.
In some embodiments, the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a first adsorption member located inside the housing and above the air inlet;
a photocatalytic member located inside the housing and above the first adsorption member; and a first electrical connection is realized between the first adsorption component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
In some embodiments, the photocatalytic component comprises: a light source and a photocatalytic body.
In some embodiments, the light source is a white light source.
In some embodiments, the photocatalytic body comprises a support and the visible light composite catalytic material formed on the support.
In some embodiments, the photocatalytic body is shaped from the visible light composite catalytic material.
In some embodiments, the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a photocatalytic component located inside the housing;
the negative ion component is positioned above the photocatalytic component, and a second electric connection is realized between the negative ion component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
In some embodiments, the photocatalytic component comprises: a light source and a photocatalytic body.
In some embodiments, the light source is a white light source.
In some embodiments, the photocatalytic body comprises a support and the visible light composite catalytic material formed on the support.
In some embodiments, the photocatalytic body is shaped from the visible light composite catalytic material.
The visible light composite catalytic material is based on modified TiO2The composite material with the graphene quantum dots can further be added with metal components, and the composite material can chemically react with various harmful gases under the irradiation of a visible light or white light source to achieve the air purification effect. Because the photocatalysis technology does not have the adsorption saturation phenomenon, and can carry out catalytic reaction under the white light source, can improve purification efficiency, reduce the light source cost, avoid the radiation damage that traditional ultraviolet irradiation brought for the novel air purifier who adopts this visible light composite catalysis material preparation's purification efficiency obtains improving.
Further, novel air purifier adopts first adsorption component to carry out preliminary treatment to the air, adsorbs and intercepts most organic substance, adopts photocatalysis component to kill bacterium, virus and degradation TVOC fast, handles remaining organic matter, virus and bacterium in the air through first adsorption component. And the first adsorption component and the photocatalytic component are electrically connected to form a loop, so that a bias electric field is generated between the first adsorption component and the photocatalytic component, the separation of carriers in the photocatalytic process is promoted, namely, holes and electrons are effectively separated, and the purification efficiency of photocatalysis is improved.
And the negative ion component is arranged and electrically connected with the photocatalytic component, so that the separation of carriers in the photocatalytic process is promoted, the negative ion component is promoted to generate negative oxygen ions, and the air purification efficiency is greatly improved. Furthermore, the negative ion component adopts a negative ion net, and an ultraviolet lamp tube and a photocatalytic purification net are arranged in the photocatalytic component; the photocatalytic purification net is electrically connected with the first adsorption component, for example, a lead is used for coupling, and a low-voltage power supply is connected to form a loop.
In addition, can also set up multilayer fluorescent tube and multilayer photocatalysis and purify the net, set up one deck photocatalysis and purify the net between adjacent two-layer fluorescent tube, still set up the second adsorption component above the photocatalysis part, each layer photocatalysis purifies the net and links mutually in first adsorption component and second adsorption component respectively to form the bias voltage electric field that a plurality of return circuits formed, effectively promote the separation of photocarrier, improve photocatalysis efficiency. Further, the air inlet is arranged on the side wall of the lower portion of the shell, so that an air inlet area is increased, the air outlet direction of the air outlet is perpendicular to the air inlet direction of the air inlet, and the path of the discharged air is reduced and the resistance is reduced.
Furthermore, a filtering component is arranged between the air inlet and the first adsorption component, so that particles in the air are filtered, and the gas is subjected to primary treatment.
Simultaneously, still carried out software design to air purifier, the casing contains power, wind speed controller, air contaminant content detector, purification mode controller, controls power supply, air-blower wind speed, the selection of pollutant content and purification mode in the air respectively to make air purifier more intelligent, increased the range of application.
Drawings
FIG. 1 is a SEM image of a visible light composite catalytic material according to a preferred embodiment of the present invention
FIG. 2 is a schematic diagram of a three-dimensional perspective structure of a novel air purifier according to a preferred embodiment of the present invention
FIG. 3 is a schematic diagram of the electrical connection between the photocatalytic purification net and the adsorption member in FIG. 2
FIG. 4 is a schematic diagram of a three-dimensional perspective structure of an air purifier according to a preferred embodiment of the present invention
FIG. 5 is a schematic diagram of a three-dimensional perspective structure of an air purifier according to a preferred embodiment of the present invention
FIG. 6 is a schematic view of the position of the slot on the back of the air purifier according to a preferred embodiment of the present invention
FIG. 7 is a schematic diagram of the position of the display screen of the air purifier according to a preferred embodiment of the present invention
Detailed Description
In order to make the contents of the present invention more comprehensible, the present invention is further described below with reference to the accompanying drawings. The invention is of course not limited to this particular embodiment, and general alternatives known to those skilled in the art are also covered by the scope of the invention.
The present invention will be described in further detail with reference to the accompanying drawings 1 to 7 and specific embodiments. It should be noted that the drawings are in a simplified form and are not to precise scale, and are only used for conveniently and clearly achieving the purpose of assisting in describing the embodiment.
Referring to fig. 1, the visible light composite catalytic material of the present invention includes: modified TiO2And (3) compounding with graphene quantum dots. In addition, in order to improve the visible light photocatalytic efficiency, the method may further include: a metal component. The metal component may be a transition group metal such as copper, strontium, tantalum, bismuth, and the like. Wherein, as shown in FIG. 1, the modified TiO2Is granular mixed crystal nanometer titanium dioxide. The crystal form of the titanium dioxide can be one or more of anatase, rutile and brookite. The mixed crystal nano titanium dioxide can comprise: nitrogen-doped nano titanium dioxide, metal-doped nano titanium dioxide and the like. Modified TiO2The particle size of the catalyst is 50-100 nm, and the mass percentage of the metal component in the whole catalyst material is more than 50%.
Based on the visible light composite catalytic material, visible light or white light can be absorbed to carry out photocatalytic reaction, the application range of photocatalysis is improved, the light source selection is more flexible, and the photocatalytic efficiency is further improved. Therefore, the preparation of the above visible light composite catalytic material of the embodiment as a photocatalytic component is a very important choice in the aspect of air purification, such as an air purifier.
Next, the structure of the novel air purifier of the present invention is specifically described.
Example one
Referring to fig. 2, in the present embodiment, the air purifier includes a housing 00; the dimensions of the housing 00 may be 40cm x 100 cm.
The housing 00 includes:
an air inlet 01 located at the lower part of the housing 00 for introducing air; specifically, a blower 09 is disposed below the inside of the casing 00, the air inlet 01 is disposed on a lower side wall of the casing 00, and the blower 09 is opposite to the air inlet 01. Considering that the air outlet direction of the air outlet 08 is perpendicular to the air inlet direction of the air inlet 01 in the embodiment, the air inlet direction of the air blower 09 is perpendicular to the air outlet direction in the arrangement of the air blower 09. In addition, the air inlet 01 is formed by a plurality of holes, and the holes are circular, and have a diameter of 0.2-0.6 cm, preferably 0.5 cm. The blower 09 here may be a 220V small blower. For example, 50-80 holes are formed in each layer of the lower sidewall of the housing 00.
Here, a filter member 02 is further provided between the air inlet 01 and the first adsorption member 03; specifically, the filter part 02 employs a filter screen, such as a high efficiency air filter (HEPA filter), to filter particles in the air, and primarily purify the air.
A first adsorption member 03 positioned inside the housing 00 above the air inlet 01; specifically, the first adsorption member 03 is an activated carbon net. The air is primarily treated to adsorb most organic matters, so that the air is further purified.
A photocatalytic member located inside the housing 00 and above the first adsorption member 03; the first adsorption member 03 and the photocatalytic member are electrically connected to each other; the photocatalytic component can include a light source and a photocatalytic body. Specifically, the photocatalytic component includes: at least two layers of lamp tubes 05 (light sources), and a photocatalytic purification net (photocatalytic body) sandwiched between two adjacent layers of lamp tubes 05; the photocatalytic purification net is electrically connected to the first adsorption member 03. The lamps 05 may be provided three per layer. The photocatalytic material adopted in the photocatalytic purification net is added with a small amount of binder. The material of the photocatalytic purification net is a composite material of metal, a photocatalytic material and a binder. The metal participates in photocatalysis, can transmit electrons, inhibits the recombination of photon-generated carriers, and improves the photocatalytic degradation performance. Here, the photocatalytic body includes a support and a visible light composite catalytic material formed on the support. Preferably, the photocatalytic purification net 06 includes a copper net and a photocatalyst formed on the copper net. The copper mesh may be a red copper mesh. The photocatalyst may be nano titanium dioxide. Here, the light source may be a white light source or other visible light sources or ultraviolet light sources, the lamp tube 05 may be an ultraviolet light tube, or may be a visible light tube, or a white light tube, and the corresponding photocatalyst may be an ultraviolet light sensitive photocatalyst, or may be a photocatalyst sensitive to visible light or white light. In addition, the photocatalyst body can be directly prepared and molded by the composite catalytic material due to the addition of the metal component, namely, the composite catalytic material is directly molded without a support body, for example, the photocatalyst is directly molded into a net structure without a copper net for supporting.
And an air outlet 08 at an upper portion of the case 00 to discharge the purified air. Specifically, the air outlet 08 is disposed at the top of the housing 00, and a louver may be disposed at the air outlet 08 to facilitate air exhaust, and the flow direction of the purified air flow is adjusted by swinging the fan blades.
Further, here, a second adsorbing member 07 is also provided between the air outlet 08 and the photocatalytic member. Specifically, the photocatalytic component includes from bottom to top: a first layer of lamp tubes 051, a first layer of photocatalytic purification net 061, a second layer of lamp tubes 052, a second layer of photocatalytic purification net 062 and a third layer of lamp tubes 053. Wherein, the second layer of the photocatalytic purification net 062 is electrically connected with the second adsorption part 07; the first layer of photocatalytic purification net 061 is electrically connected to the first adsorption member 03. Referring to fig. 3 and fig. 2, the electrical connection between the first layer of photocatalytic purification net 061 and the first absorbing member 03 is illustrated as follows: the first photocatalytic purification net 061 is coupled with the first absorption member 03 through a wire 04 to realize electrical connection, and is connected with a low-voltage power supply to form a loop. The low voltage power supply is here a dc power supply. It should be noted that the electrical connection between the second layer of photocatalytic purification net 062 and the second adsorption part 07 is the same as that shown in fig. 3, and the description thereof is omitted. Here, it is preferable that the distance between the first photocatalytic purification net 061 and the first adsorption member 03 is 1 to 20 cm. Here, the wire coupling effect is used so that the first adsorption element 03 and the second adsorption element 07 generate an electric adsorption effect in addition to the physicochemical adsorption capacity.
A foot is also provided at the bottom of the housing 00. The legs may be removable or fixedly attached to the housing 00. The foot may employ a roller so that the housing 00 can be moved under the rolling of the roller.
Example two
Referring to fig. 4, in the present embodiment, the air purifier includes a housing 00; the dimensions of the housing 00 may be 40cm x 100 cm.
The housing 00 includes:
an air inlet 01 located at the lower part of the housing 00 for introducing air; specifically, a blower 09 is disposed below the inside of the casing 00, the air inlet 01 is disposed on a lower side wall of the casing 00, and the blower 09 is opposite to the air inlet 01. Considering that the air outlet direction of the air outlet 08 is perpendicular to the air inlet direction of the air inlet 01 in the embodiment, the air inlet direction of the air blower 09 is perpendicular to the air outlet direction in the arrangement of the air blower 09. In addition, the air inlet 01 is formed by a plurality of holes, and the holes are circular, and have a diameter of 0.2-0.6 cm, preferably 0.5 cm. The blower 09 here may be a 220V small blower. For example, 50-80 holes are formed in each layer of the lower sidewall of the housing 00.
Here, a filter member 02 is further provided between the air inlet 01 and the first adsorption member 03; specifically, the filter part 02 employs a filter screen, such as a high efficiency air filter (HEPA filter), to filter particles in the air, and primarily purify the air.
A first adsorption member 03 positioned inside the housing 00 above the air inlet 01; specifically, the first adsorption member 03 is an activated carbon net. The air is primarily treated to adsorb most organic matters, so that the air is further purified.
And a photocatalytic member positioned inside the housing 00 and above the first adsorption member 03. The photocatalytic component can include a light source and a photocatalytic body. Specifically, the photocatalytic component includes: at least two layers of lamp tubes 05 (light sources), and a photocatalytic purification net (photocatalytic body) sandwiched between two adjacent layers of lamp tubes 05. The lamps 05 may be provided three per layer. The photocatalytic material adopted in the photocatalytic purification net is added with a small amount of binder. The material of the photocatalytic purification net is a composite material of metal, a photocatalytic material and a binder. The metal participates in photocatalysis, can transmit electrons, inhibits the recombination of photon-generated carriers, and improves the photocatalytic degradation performance. Here, the photocatalytic body includes a support and a visible light composite catalytic material formed on the support. Preferably, the photocatalytic purification net 06 includes a copper net and a photocatalyst formed on the copper net. The copper mesh may be a red copper mesh. The photocatalyst may be nano titanium dioxide. Here, the light source may be a white light source or other visible light sources or ultraviolet light sources, and the lamp tube 05 may be an ultraviolet lamp tube or a visible light lamp tube. The corresponding photocatalyst may be a photocatalyst sensitive to ultraviolet light, or a photocatalyst sensitive to visible light or white light. In addition, the photocatalyst body can be directly prepared and molded by the composite catalytic material due to the addition of the metal component, namely, the composite catalytic material is directly molded without a support body, for example, the photocatalyst is directly molded into a net structure without a copper net for supporting.
And an air outlet 08 at an upper portion of the case 00 to discharge the purified air. Specifically, the air outlet 08 is disposed at the top of the housing 00, and a louver may be disposed at the air outlet 08 to facilitate air exhaust, and the flow direction of the purified air flow is adjusted by swinging the fan blades.
Further, here, a second adsorbing member 07 is also provided between the air outlet 08 and the photocatalytic member. Specifically, the photocatalytic component includes from bottom to top: a first layer of lamp tubes 051, a first layer of photocatalytic purification net 061, a second layer of lamp tubes 052, a second layer of photocatalytic purification net 062 and a third layer of lamp tubes 053. Here, it is preferable that the distance between the first photocatalytic purification net 061 and the first adsorption member 03 is 1 to 20 cm.
Referring to fig. 4 again, here, a negative ion component is disposed on the second layer of photocatalytic purification net 062, and an electrical connection is formed between the negative ion component and the photocatalytic component, where the negative ion component is a negative ion net or a negative ion plate 10. Specifically, the negative ion network or the negative ion plate 10 is located above the third layer of ultraviolet lamp tube 053, the negative ion network or the negative ion plate 10 is electrically connected with the second layer of photocatalytic purification net 062, and specifically, the negative ion network or the negative ion plate 10 is connected with the second layer of photocatalytic purification net 062 by the wire 11. The negative ion net or the negative ion plate 10 can generate negative ions to kill viruses and bacteria, thereby further improving the air purification quality. Preferably, in order to avoid interference between the negative ion component and the second layer of the photocatalytic purification net 062 and increase the amount of generated negative ions, the distance between the negative ion component and the second layer of the photocatalytic purification net 062 is 1-10 cm. The conductive wire in this embodiment may be a metal material. Here, the wire coupling effect is used so that the first adsorption element 03 and the second adsorption element 07 generate an electric adsorption effect in addition to the physicochemical adsorption capacity.
Here, the manner of electrical connection is: the negative ion net or negative ion plate 10 is coupled with the second layer of photocatalytic purification net 062 through a wire 11 to realize electrical connection, and is connected with a low-voltage power supply to form a loop. The low voltage power supply is here a dc power supply.
In addition, in this embodiment, a support leg is further provided at the bottom of the housing 00. The legs may be removable or fixedly attached to the housing 00. The foot may employ a roller so that the housing 00 can be moved under the rolling of the roller.
EXAMPLE III
Referring to fig. 5, in the present embodiment, the air purifier includes a housing 00; the dimensions of the housing 00 may be 40cm x 100 cm.
The housing 00 includes:
an air inlet 01 located at the lower part of the housing 00 for introducing air; specifically, a blower 09 is disposed below the inside of the casing 00, the air inlet 01 is disposed on a lower side wall of the casing 00, and the blower 09 is opposite to the air inlet 01. Considering that the air outlet direction of the air outlet 08 is perpendicular to the air inlet direction of the air inlet 01 in the embodiment, the air inlet direction of the air blower 09 is perpendicular to the air outlet direction in the arrangement of the air blower 09. In addition, the air inlet 01 is formed by a plurality of holes, and the holes are circular, and have a diameter of 0.2-0.6 cm, preferably 0.5 cm. The blower 09 here may be a 220V small blower. For example, 50-80 holes are formed in each layer of the lower sidewall of the housing 00.
Here, a filter member 02 is further provided between the air inlet 01 and the first adsorption member 03; specifically, the filter part 02 employs a filter screen, such as a high efficiency air filter (HEPA filter), to filter particles in the air, and primarily purify the air.
A first adsorption member 03 positioned inside the housing 00 above the air inlet 01; specifically, the first adsorption member 03 is an activated carbon net. The air is primarily treated to adsorb most organic matters, so that the air is further purified.
A photocatalytic member located inside the housing 00 and above the first adsorption member 03; and, a first electrical connection is formed between the first adsorption member 03 and the photocatalytic member; the photocatalytic component can include a light source and a photocatalytic body. Specifically, the photocatalytic component includes: at least two layers of lamp tubes 05 (light sources), which can be ultraviolet lamp tubes or visible light lamp tubes, and a photocatalytic purification net (photocatalytic body) sandwiched between the two adjacent layers of lamp tubes 05; the photocatalytic purification net forms a first electrical connection with the first adsorption element 03. The lamps 05 may be provided three per layer. The photocatalytic material adopted in the photocatalytic purification net is added with a small amount of binder. The material of the photocatalytic purification net is a composite material of metal, a photocatalytic material and a binder. The metal participates in photocatalysis, can transmit electrons, inhibits the recombination of photon-generated carriers, and improves the photocatalytic degradation performance. Here, the photocatalytic body includes a support and a visible light composite catalytic material formed on the support. Preferably, the photocatalytic purification net 06 includes a copper net and a photocatalyst formed on the copper net. The copper mesh may be a red copper mesh. The photocatalyst may be nano titanium dioxide. It should be noted that, here, the light source may be a white light source or other visible light sources or an ultraviolet light source, and the lamp tube 05 may be an ultraviolet lamp tube or a visible light lamp tube. The corresponding photocatalyst may be a photocatalyst sensitive to ultraviolet light, or a photocatalyst sensitive to visible light or white light. In addition, the photocatalyst body can be directly prepared and molded by the composite catalytic material due to the addition of the metal component, namely, the composite catalytic material is directly molded without a support body, for example, the photocatalyst is directly molded into a net structure without a copper net for supporting.
And an air outlet 08 at an upper portion of the case 00 to discharge the purified air. Specifically, the air outlet 08 is disposed at the top of the housing 00, and a louver may be disposed at the air outlet 08 to facilitate air exhaust, and the flow direction of the purified air flow is adjusted by swinging the fan blades.
Further, here, a second adsorbing member 07 is also provided between the air outlet 08 and the photocatalytic member. Specifically, the photocatalytic component includes from bottom to top: a first layer of lamp tubes 051, a first layer of photocatalytic purification net 061, a second layer of lamp tubes 052, a second layer of photocatalytic purification net 062 and a third layer of lamp tubes 053. Wherein the second layer of photocatalytic purification net 062 forms a first electrical connection with the second adsorbent member 07; the first layer of photocatalytic purification mesh 061 forms a first electrical connection with the first adsorption element 03. Referring to fig. 5 in conjunction with fig. 3, the electrical connection between the first layer of photocatalytic purification net 061 and the first absorbing member 03 is illustrated as follows: the first photocatalytic purification net 061 is coupled with the first absorption member 03 through a wire 04 to realize electrical connection, and is connected with a low-voltage power supply to form a loop. The low voltage power supply is here a dc power supply. It should be noted that the second layer of photocatalytic purification net 062 is electrically connected with the second adsorption member 07, which is the same as that shown in fig. 3, and the second layer of photocatalytic purification net 061 is coupled with the second adsorption member 07 through a conductive member 11 to realize electrical connection, and is connected with a low voltage power supply to form a loop. The low voltage power supply is here a dc power supply. Here, it is preferable that the distance between the first photocatalytic purification net 061 and the first adsorption member 03 is 1 to 20 cm.
Here, the second layer of photocatalytic purification net 062 is provided with an anion component, the anion component and the photocatalytic component form a second electrical connection, the anion component here is an anion network or an anion plate 10, specifically, the anion network or the anion plate 10 is located above the third layer of ultraviolet lamp tube 053, and the anion network or the anion plate 10 and the second layer of photocatalytic purification net 062 are connected by a wire 11. The negative ion net can generate negative ions to kill viruses and bacteria, so that the air purification quality is further improved. Here, the second electrical connection manner is: the negative ion net or negative ion plate 10 is coupled with the second layer of photocatalytic purification net 062 through a wire 11 to realize electrical connection, and is connected with a low-voltage power supply to form a loop. The low voltage power supply is here a dc power supply. A foot is also provided at the bottom of the housing 00. The legs may be removable or fixedly attached to the housing 00. The foot may employ a roller so that the housing 00 can be moved under the rolling of the roller. Preferably, in order to avoid interference between the negative ion component and the second layer of the photocatalytic purification net 062 and increase the amount of generated negative ions, the distance between the negative ion component and the second layer of the photocatalytic purification net 062 is 1-10 cm. Here, the wire coupling effect is used so that the first adsorption element 03 and the second adsorption element 07 generate an electric adsorption effect in addition to the physicochemical adsorption capacity.
In addition, in the first to third embodiments, in order to improve the intelligent control of the air purifier, the air purifier is further provided with a main power supply, an air speed controller, an air pollutant content detector and a purification mode controller;
a main power supply for supplying power to each part of the air purifier; the main power supply is connected with the lamp tube and the blower;
the air speed controller is connected with the air blower and used for controlling the air speed of the air blower;
an air contaminant content detector for detecting a contaminant content in air outside the housing;
and the purification mode controller is connected with the lamp tube and used for controlling the on-off of the lamp tube so as to control the purification mode.
In conjunction with fig. 7, a touch display 12 is disposed on the outer side wall of the housing. A power switch option, a purification mode option, a wind speed control option and an air pollutant content real-time online display module are displayed in the touch display screen 12; wherein the content of the first and second substances,
the power switch option is connected with the main power supply and controls the on-off of the main power supply through man-machine interaction;
the purification mode option is connected with the purification mode controller, and transmits an instruction to the purification mode controller after the option is selected through interpersonal interaction, and the purification mode controller controls the on-off of the lamp tube according to the instruction;
the wind speed control option is connected with a wind speed controller, and sends an instruction to the wind speed controller through interpersonal interaction, and the wind speed controller controls the wind speed of the air blower according to the instruction;
the real-time online display module of air pollutant content is connected with air pollutant content detector 13, and air pollutant content detector 13 detects the external pollutant content of casing to transmit the online display module of air pollutant content in real time and come real-time display air pollutant content.
The air pollution zone content detector 13 here employs an electrochemical gas detector.
In order to facilitate cleaning and replacement, referring to fig. 6, an openable dark cell is disposed on the rear side wall of the housing, and corresponding components can be removed by opening the dark cell. The dark cell corresponds to each layer of components, for example, the dark cell a1 corresponds to the layer where the filter component is located, the dark cell a2 corresponds to the first adsorption component, the dark cell A3 corresponds to the layer where the first layer of photocatalytic purification net is located, the dark cell a4 corresponds to the layer where the second layer of photocatalytic purification net is located, and the dark cell a5 corresponds to the layer where the second adsorption component is located.
Above the distribution of the individual layer elements, in order to increase the adequate contact of each layer with air, the distribution of the individual layers can be arranged as follows: the distance between the filter screen and the blower is larger than the distance between the first adsorption part and the filter screen; the distance between the first adsorption component and the filter screen is larger than the distance between the second adsorption component and the air outlet. In addition, the layers are arranged parallel to each other.
The filter screen is located 10 ~ 15cm department directly over the air-blower, and first adsorption component is located 9 ~ 10cm departments directly over the filter screen, and the second adsorption component is located 7 ~ 8cm departments directly under the air outlet. The copper mesh is set to be 50-60 meshes. The power of the ultraviolet lamp tube is 60-70W. Aiming at the photocatalytic component formed by the first adsorption component, the first layer of ultraviolet lamp tubes, the first layer of photocatalytic purification net, the second layer of ultraviolet lamp tubes, the second layer of photocatalytic purification net and the third layer of ultraviolet lamp tubes, the distance between every two adjacent layers of ultraviolet lamp tubes is equal and can be 20-25 cm, and the ultraviolet lamp tubes in each layer are arranged in parallel.
It should be noted that, the above-mentioned photocatalytic purification net adopts a copper net coated with a photocatalyst, when an ultraviolet lamp tube is matched, the photocatalytic action of the photocatalyst and the irradiation of the lamp tube can kill bacteria and viruses with high efficiency, and further improve the air purification rate.
Although the present invention has been described with reference to preferred embodiments, which are illustrated for the purpose of illustration only and not for the purpose of limitation, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A visible light composite catalytic material, comprising: modified TiO2And (3) compounding with graphene quantum dots.
2. The visible-light composite catalytic material of claim 1, further comprising: a metal.
3. The visible-light composite catalytic material of claim 1, characterized in that the metal is a transition group metal.
4. The visible-light composite catalytic material of claim 1, wherein the modified TiO is2Is granular mixed crystal nano titanium dioxide; the modified TiO2The method comprises the following steps: nitrogen-doped nano titanium dioxide,Metal is doped with one or more of nano titanium dioxide.
5. A novel air purifier having a photocatalytic component comprising the visible light composite catalytic material of claim 1.
6. The novel air purifier of claim 5, wherein the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a first adsorption member located inside the housing and above the air inlet;
a photocatalytic member located inside the housing and above the first adsorption member; and a first electrical connection is realized between the first adsorption component and the photocatalytic component;
the negative ion component is positioned above the photocatalytic component, and a second electric connection is realized between the negative ion component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
7. The novel air purifier of claim 5, wherein the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a first adsorption member located inside the housing and above the air inlet;
a photocatalytic member located inside the housing and above the first adsorption member; and a first electrical connection is realized between the first adsorption component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
8. The novel air purifier of claim 5, wherein the novel air purifier has a housing; the housing includes:
the air inlet is positioned at the lower part of the shell and is used for introducing air;
a photocatalytic component located inside the housing;
the negative ion component is positioned above the photocatalytic component, and a second electric connection is realized between the negative ion component and the photocatalytic component;
and an air outlet positioned at an upper portion of the housing so that the purified air is discharged.
9. The novel air purifier according to any one of claims 6 to 8, wherein the photocatalytic member comprises: a light source and a photocatalytic body.
10. The novel air purifier of claim 9 wherein the light source is a white light source.
11. The novel air purifier of claim 9 wherein the photocatalytic body comprises a support and the visible light recombination catalytic material formed on the support.
12. The novel air purifier of claim 9, wherein the photocatalytic body is molded from the visible light composite catalytic material.
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| CN201911102515.1A CN110743550A (en) | 2019-11-12 | 2019-11-12 | Visible light composite catalytic material and novel air purifier |
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| CN201911102515.1A CN110743550A (en) | 2019-11-12 | 2019-11-12 | Visible light composite catalytic material and novel air purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021200217A1 (en) * | 2020-03-31 | 2021-10-07 | 国立大学法人群馬大学 | Photocatalyst-supported copper fiber sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021200217A1 (en) * | 2020-03-31 | 2021-10-07 | 国立大学法人群馬大学 | Photocatalyst-supported copper fiber sheet |
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