WO2021232244A1 - Dispositif de purification de l'air, de stérilisation et d'inactivation de virus - Google Patents

Dispositif de purification de l'air, de stérilisation et d'inactivation de virus Download PDF

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Publication number
WO2021232244A1
WO2021232244A1 PCT/CN2020/091080 CN2020091080W WO2021232244A1 WO 2021232244 A1 WO2021232244 A1 WO 2021232244A1 CN 2020091080 W CN2020091080 W CN 2020091080W WO 2021232244 A1 WO2021232244 A1 WO 2021232244A1
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WIPO (PCT)
Prior art keywords
light source
graphene
photocatalytic degradation
sterilization
photocatalytic
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PCT/CN2020/091080
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English (en)
Chinese (zh)
Inventor
林楷睿
许志
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福建新峰二维材料科技有限公司
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Priority to PCT/CN2020/091080 priority Critical patent/WO2021232244A1/fr
Publication of WO2021232244A1 publication Critical patent/WO2021232244A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to the technical field of air purification, sterilization and disinfection, in particular to an air purification, sterilization and virus killing device.
  • TiO 2 can only absorb ultraviolet light with a wavelength less than 387 nm, and its photocatalytic efficiency is very low under sunlight. After the prepared three-dimensional graphene material is composited with TiO 2 through a hydrothermal method, the photogenerated carriers generated by the TiO 2 under illumination can be quickly transferred.
  • Nano-TiO 2 has special physical and chemical properties that traditional materials do not have. It has high chemical stability, non-toxic and non-polluting, small particle size, large specific surface area, high surface energy, etc., and its three unique effects: surface Effect, small size effect and macroscopic quantum tunneling effect.
  • Three-dimensional graphene material is different from two-dimensional graphene in structure.
  • Two-dimensional graphene is easy to agglomerate and difficult to disperse, and it is difficult to obtain a material with a high specific surface area. It has a three-dimensional hollow porous network structure with graphene walls.
  • Laminated graphite and porous graphitic carbon foams have the advantages of ultra-low density surface area, high thermal conductivity, high temperature resistance, corrosion resistance, ductility, and flexibility.
  • the single layer is transparent and has high quality.
  • activated carbon adsorption formaldehyde or HEPA technology to filter. Collect suspended bacteria to improve air quality; use packaging technology and refrigeration methods to extend the shelf life of food.
  • activated carbon Because the structure of activated carbon is characterized by many pores and strong adsorption, many disinfection masks are made using this feature of activated carbon. It is best to choose activated carbon with relatively small particles. The smaller the particles, the better the adsorption effect.
  • activated carbon can only adsorb formaldehyde and cannot be decomposed. Formaldehyde still exists in the air and cannot be completely disappeared. The activated carbon is easily saturated and can be used for a short period of time.
  • the present invention provides an air purification, sterilization and virus killing device that uses high photocatalytic efficiency materials to achieve fresh preservation and storage of food at room temperature and removal of indoor harmful formaldehyde, various bacteria and viruses.
  • an air purification and sterilization virus killing device including a blower device, a deep ultraviolet light source, a photocatalytic light source, a graphene photocatalytic degradation device, a power connection device, and
  • the housing, the blowing device, the deep ultraviolet light source, the photocatalytic light source, and the graphene photocatalytic degradation device are all electrically connected to the power connection device, the blowing device, the deep ultraviolet light source, the photocatalytic light source, and the graphene
  • the photocatalytic degradation device and the power connection device are all fixedly connected to the housing, the deep ultraviolet light source and the photocatalytic light source are arranged together between the air blowing device and the graphene photocatalytic degradation device, and the photocatalytic light source is irradiated on the graphene photocatalytic degradation device
  • the shell is provided with a through hole.
  • the blowing device is a low-voltage electric fan, which functions to promote air circulation.
  • the deep ultraviolet light source is a 220nm single-wavelength lamp tube or LED light source that does not generate ozone.
  • the photocatalytic light source is an ultraviolet light tube or LED light source with a wavelength of 380-390 nm.
  • the material of the shell is an opaque material.
  • the graphene photocatalytic degradation device includes a base layer of nickel mesh or copper mesh, a single-layer three-dimensional graphene layer, a TiO 2 nanosphere film layer, and a nano silver layer on the surface of the TiO 2 nanosphere film layer.
  • the pore size of the base layer is 0.01-0.6mm, preferably 0.01-0.1mm, and the diameter of the TiO2 nanospheres in the outer layer is 5-100nm.
  • a direct current is passed through the graphene photocatalytic degradation device, and the current is 0.5A-1A.
  • a preparation method of the graphene photocatalytic degradation device of the air purification, sterilization and virus killing device includes the following steps:
  • the removal time in step 1 is 5-20 minutes
  • the carbon source gas is selected from one or more of methane, methanol, ethanol or ethane; the protective gas is selected from Argon or Neon; when the carbon source gas is methane or ethane, the flow rate of the carbon source gas is 1-10 s.c.c.m., preferably 3-7 s.c.c.m.; when the carbon source gas is methanol or ethanol, use 1-10 s.c.c.m., preferably 3-7
  • the flow rate of the hydrogen is 100-300 s.c.c.m., preferably 150-250 s.c.c.m.
  • the flow rate of the protective gas is 300-600 s.c.c.m.
  • the cooling rate is 200-300°C/min.
  • the tetrabutyl titanate described in step 2 accounts for 15-25% of the ethanol mass; the nano-silver accounts for 0.01-1% of the ethanol mass; the ethanol temperature is controlled at 0-5°C, so The stated reaction time is 4-24h.
  • step 2 also includes adding silica nanoparticles, and the silica nanoparticles account for 0.01 to 3% of the ethanol by mass.
  • the drying temperature in step 3 is 50-80°C, the drying conditions are under vacuum, and the drying time is 3-4h; the heating temperature is preferably 400°C, The reaction time is 0.5-3 hours.
  • the air purification, sterilization and virus sterilization device provided by the present invention includes a graphene photocatalytic degradation device and a 220nm deep ultraviolet light, which are two functional modules that realize air purification, sterilization and sterilization.
  • the graphene photocatalytic degradation device is composed of graphene composite titanium dioxide and nano silver material. Titanium dioxide undergoes a photocatalytic reaction under ultraviolet light irradiation. Nano silver generates a large number of electrons under ultraviolet light irradiation, and a large number of electrons quickly enter the titanium dioxide. Speeds up the photocatalytic reaction and greatly increases the number of holes.
  • the high electron mobility of graphene can effectively extend the life of the carriers generated by photocatalysis, prevent the recombination of holes and electrons, and further greatly improve the high catalytic efficiency.
  • a large number of silver ions (Ag + , Ag 2+ , Ag 3+ ) will be formed after a large number of electrons on the surface of nano-silver run away.
  • the reduction potential of Ag 2+ and Ag 3+ is extremely high, which can generate atomic oxygen in the surrounding space.
  • Atomic oxygen has strong oxidizing properties and can destroy bacteria, while Ag + can adsorb the protease of the bacterial body and quickly bind with it, destroy the protease of the bacterial body, make it unable to breathe, and kill the bacteria.
  • the production of silver ions during the photocatalytic process of the graphene photocatalytic degradation device can effectively kill bacteria and viruses, and further improve the sterilization efficiency of the graphene photocatalytic degradation device.
  • the 220nm deep ultraviolet light can destroy the DNA or RNA molecular structure of the genetic material in bacteria and viruses, and make bacteria and viruses inactivated or unable to reproduce, thereby blocking the continuous replication and rapid spread of bacteria and viruses.
  • the titanium dioxide in the preparation of titanium dioxide nanospheres, by controlling the dropping rate and temperature, the titanium dioxide can form a spherical structure with uniform size and large specific surface area, which is uniformly distributed on the surface of a single-layer three-dimensional graphene together with nano-silver, with good dispersibility. , It not only avoids the agglomeration of its own particles, but also effectively prevents the re-stacking of graphene sheets.
  • the unique structure of nanocomposites makes it have good thermal stability and excellent photocatalytic activity. Fields such as materials and photocatalysis have potential applications.
  • the present invention has the following advantages:
  • the present invention further improves the photocatalytic efficiency, can efficiently degrade harmful organic matter such as formaldehyde, and effectively kill various harmful suspended bacteria and viruses in the air and harmful bacteria on the surface of food; thereby achieving efficient air purification and prolonging food preservation period the goal of.
  • the device of the present invention does not use any filter, does not have any adsorption phenomenon, and does not produce secondary pollution. It can efficiently oxidize and decompose harmful VOCs such as formaldehyde into harmless CO 2 and H 2 O, and kill efficiently without rebound. Viruses and bacteria eradicate air-suspended bacteria in confined spaces, realizing long-term high-efficiency air purification.
  • the device of the present invention can kill the bacteria on the surface of the object in the confined space, realizes the preservation of food at room temperature, is energy-saving and environmentally friendly, and is safe and practical.
  • the fresh-keeping instrument made by the graphene photocatalytic degradation device provided by the present invention can effectively sterilize, kill viruses, remove organic matter such as formaldehyde, ensure air quality, and can also sterilize and prolong food preservation period.
  • Figure 1 is a schematic diagram of the structure of an air purification, sterilization and virus killing device of the present invention
  • Fig. 2 is a schematic structural diagram of a graphene photocatalytic degradation device provided by the present invention.
  • Figure 3 is a graph showing the result of degradation of formaldehyde by the graphene photocatalytic degradation device provided by the present invention.
  • Fig. 4 is a graph showing the results of purification of H1N1 influenza A virus by the graphene photocatalytic degradation device provided by the present invention.
  • Figure 5 is a graph showing the results of purification of coliphage viruses by the graphene photocatalytic degradation device provided by the present invention.
  • Fig. 6 is a graph showing the result of purification of MS2 phage virus by the graphene photocatalytic degradation device provided by the present invention.
  • Fig. 7 is a graph showing the results of killing Staphylococcus epidermidis by the graphene photocatalytic degradation device provided by the present invention.
  • Fig. 8 is a graph showing the result of killing Pseudomonas fluorescens by the graphene photocatalytic degradation device provided by the present invention.
  • Fig. 9 is a graph showing the result of killing Staphylococcus albicans by the graphene photocatalytic degradation device provided by the present invention.
  • the air purification and sterilization device of the present invention consists of a blower device 1, a deep ultraviolet light source 2, a photocatalytic light source 3, a graphene photocatalytic degradation device 4, a power connection device 5 and a housing, the drum
  • the wind device 1, the deep ultraviolet light source 2, the photocatalytic light source 3, and the graphene photocatalytic degradation device 4 are all connected to the power connection device 5;
  • the graphene photocatalytic degradation device 4 and the power connection device 5 are all fixed to the housing;
  • the deep ultraviolet light source 2 and the photocatalytic light source 3 are arranged together in the middle of the air blowing device 1 and the graphene photocatalytic degradation device 4.
  • the light source 3 irradiates the graphene photocatalytic degradation device 4 with a plurality of through holes in the housing.
  • the graphene photocatalytic degradation device 4 can pass a direct current of 0.5A-1A;
  • the deep ultraviolet light source 2 is a 220nm single-wavelength lamp or LED light source, and the 220nm LED light source does not produce ozone;
  • the photocatalytic light source 3 has a wavelength of One of 380-390nm ultraviolet light tube or LED light source.
  • the blowing device is a low-voltage electric fan, which is used to promote air circulation.
  • the power connection device 5 supplies power to the blowing device 1, the deep ultraviolet light source 2, the photocatalytic light source 3, and the graphene photocatalytic degradation device 4.
  • the material of the shell is opaque material.
  • the graphene photocatalytic degradation device 4 includes a base layer of nickel mesh or copper mesh 4-1, a single-layer three-dimensional graphene layer 4-2, a TiO 2 nanosphere film layer 4-3, and a TiO 2 nanosphere film layer 4- 3 Nano silver layer 4-4 on the surface.
  • the pore size of the base layer 4-1 is 0.01-0.6 mm, and the pore size is preferably 0.01-0.1 mm.
  • a preparation method of the graphene photocatalytic degradation device of the air purification, sterilization and virus killing device includes the following steps:
  • a preparation method of a graphene photocatalytic degradation device is prepared by the following examples:
  • the temperature of ethanol is controlled at 0°C, and ultrasonically mix well. Continue to add 0.05g of nano-silver, and ultrasonically mix well. After that, the prepared single-layer three-dimensional graphene was put into the reaction solution, and placed in a hydrothermal reaction kettle at 160° C. for hydrothermal reaction for 4 hours. Blow in nitrogen, clean the sample obtained from the hydrothermal reaction, dry it at 50°C for 3 hours and then heat it to 500°C for 1 hour to obtain a base layer/three-dimensional graphene/ The TiO2 nanosphere/nano silver film is the photocatalytic degradation device 4.
  • the temperature of ethanol is controlled at 5°C, and the mixture is mixed uniformly by ultrasonic, continue to add 0.1g of nano silver, 0.1g
  • the prepared single-layer three-dimensional graphene is put into the reaction solution and placed in a hydrothermal reaction kettle at 220° C. for hydrothermal reaction for 24 hours. Blow in nitrogen, clean the sample obtained from the hydrothermal reaction, dry it at 80°C for 4 hours, and then heat it to 600°C for 0.5 hours to obtain a base layer/three-dimensional graphene/ TiO2 nanosphere/nano silver film, ie, graphene photocatalytic degradation device 4.
  • the temperature of the ethanol is controlled at 3°C, and ultrasonically mix uniformly. Continue to add 0.02g of nano-silver, and ultrasonically mix uniformly. Afterwards, the prepared single-layer three-dimensional graphene was put into the reaction solution, and placed in a hydrothermal reaction kettle at 180° C. for hydrothermal reaction for 16 hours. Blow in nitrogen, clean the sample obtained from the hydrothermal reaction, dry it at 60°C for 4 hours, and then heat it to 400°C for 3 hours to obtain a base layer/three-dimensional graphene/ TiO2 nanosphere/nano silver film, ie, graphene photocatalytic degradation device 4.
  • Detection process Place the 6W small air purification and preservation device provided by the present invention in a 4m3 confined space, the initial concentration of formaldehyde in the confined space is 1ppm, and then turn on the device to check the concentration of formaldehyde in the confined space every 5 minutes; as a comparison In the experiment, the initial concentration of formaldehyde in the confined space is also 1 ppm, and the device is not placed, and the concentration of formaldehyde in the confined space is detected every 30 minutes.
  • the formaldehyde degradation efficiency of the air-purified and fresh-keeping device provided by the present invention for 120 minutes in the closed space reaches about 90%, 160 minutes to about 97%; without the device, the formaldehyde in the closed space still retains 98% after 3 hours above.
  • the air purification device assembled by the technical scheme of the present invention is sent to a third-party testing agency to detect the purification efficiency of viruses in the air.
  • Figure 4 shows that the test results of the Guangzhou Institute of Microbiology show that the 60-minute purification rates of the three groups of H1N1 influenza A viruses are 98.88%, 97.82%, and 98.53%, respectively.
  • Figure 5 shows the test results of Guangzhou Industrial Microbiology Testing Center, showing that the average removal rate of coliphage virus in 1 hour is as high as 99.72%.
  • Figure 6 shows the RTI INTERNATIONAL test results show that the purification efficiency of MS2 phage virus is 12 times the natural decay rate.
  • the device provided by the present invention can effectively kill viruses in the air.
  • the air purification device assembled by the technical solution of the present invention is sent to a third-party testing agency to test the purification efficiency of bacteria.
  • Figures 7 and 8 show the RTI International test results respectively show that the purification efficiency of Staphylococcus epidermidis and Pseudomonas fluorescens are 72 times and 5 times of the natural attenuation rate respectively;
  • Figure 9 The test results of Guangdong Microbiological Analysis and Testing Center show that the killing rate of Staphylococcus albicans is as high as 98.77%. To sum up, it shows that the device provided by the present invention has high efficiency in killing bacteria, can well kill bacteria groups on the surface of food, prevent food from spoiling, and realize food preservation and extend the shelf life of food.
  • the principle of the present invention is: the nano-TiO2 photocatalytic degradation mechanism is divided into 8 steps to complete the photocatalytic process:
  • the silver ions produced by nano-silver under ultraviolet light destroy the protease of the bacterial body, making it unable to breathe and killing the bacteria.
  • the 220nm deep ultraviolet light destroys the DNA or RNA molecular structure of the genetic material in bacteria and viruses, and makes bacteria and viruses inactivated or unable to reproduce, thereby blocking the continuous replication and rapid spread of bacteria and viruses. Achieve efficient sterilization and elimination of viruses.
  • the invention further improves the photocatalytic efficiency, can efficiently degrade harmful organic matter such as formaldehyde, and effectively kill various harmful suspended bacteria and viruses in the air and harmful bacteria on the food surface; thereby achieving the purpose of efficiently purifying the air and extending the food preservation period .
  • the killing rate of H1N1 influenza A virus in 60 minutes is as high as 98.99% (the test result of Guangzhou Institute of Microbiology); the killing rate of coliphage virus is as high as 99.72% in one hour (the test result of Guangzhou Industrial Microbiology Testing Center); MS2 The purification efficiency of phage is 12 times of the natural decay rate (RTI INTERNATIONAL test results).
  • the purification efficiency of Staphylococcus epidermidis is 72 times of the natural decay rate (RTI INTERNATIONAL test results); the purification efficiency of Pseudomonas fluorescens is 5 times of the natural attenuation rate (RTIINTERNATIONAL test results); the killing rate of Staphylococcus albicans is as high as 98.77% (test results of Guangdong Microbial Analysis and Testing Center).
  • the device of the present invention does not use any filter screen, does not have any adsorption phenomenon, does not produce secondary pollution, can efficiently oxidize and decompose harmful VOCs such as formaldehyde into harmless CO 2 and H 2 O, and effectively kill viruses and viruses without rebound. Bacteria, eradicate air-suspended bacteria in confined spaces, and achieve long-term high-efficiency air purification.
  • the device of the present invention can kill the flora on the surface of the object in the confined space, realizes the preservation of food at room temperature, is energy-saving and environmentally friendly, and is safe and practical.
  • the fresh-keeping instrument made of the graphene photocatalytic degradation device provided by the present invention can effectively sterilize, kill viruses, remove organic matter such as formaldehyde, ensure air quality, and can also sterilize and prolong food preservation period.

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Abstract

Est divulgué, un dispositif de purification de l'air, de stérilisation et d'inactivation de virus, comprenant un dispositif de soufflage (1), une source de lumière ultraviolette profonde (2), une source de lumière de photocatalyse (3), un dispositif de dégradation par photocatalyse au graphène (4), un dispositif de connexion de source d'alimentation (5) et un boîtier, le dispositif de soufflage (1), la source de lumière ultraviolette profonde (2), la source de lumière de photocatalyse (3) et le dispositif de dégradation par photocatalyse au graphène (4) sont tous connectés électriquement au dispositif de connexion de source d'alimentation (5) ; le dispositif de soufflage (1), la source de lumière ultraviolette profonde (2), la source de lumière de photocatalyse (3), le dispositif de dégradation par photocatalyse au graphène (4) et le dispositif de connexion de source d'alimentation (5) sont tous reliés de manière fixe au boîtier ; la source de lumière ultraviolette profonde (2) et la source de lumière de photocatalyse (3) sont agencées ensemble entre le dispositif de soufflage (1) et le dispositif de dégradation par photocatalyse au graphène (4) ; la source de lumière de photocatalyse (3) irradie le dispositif de dégradation par photocatalyse au graphène (4) ; et le boîtier est pourvu d'un trou traversant.
PCT/CN2020/091080 2020-05-19 2020-05-19 Dispositif de purification de l'air, de stérilisation et d'inactivation de virus WO2021232244A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114669334A (zh) * 2021-12-08 2022-06-28 上海烯峰科技有限公司 一种石墨烯@光触媒复合材料及制备方法、催化剂、吸附型材料

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