WO2011049140A1 - 繊維状フィルター及び空気清浄機 - Google Patents

繊維状フィルター及び空気清浄機 Download PDF

Info

Publication number
WO2011049140A1
WO2011049140A1 PCT/JP2010/068515 JP2010068515W WO2011049140A1 WO 2011049140 A1 WO2011049140 A1 WO 2011049140A1 JP 2010068515 W JP2010068515 W JP 2010068515W WO 2011049140 A1 WO2011049140 A1 WO 2011049140A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibrous filter
titanium dioxide
fibers
dioxide film
filter
Prior art date
Application number
PCT/JP2010/068515
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
久人 原賀
友彦 樋口
宏 吉永
英昭 永吉
陽平 梅田
Original Assignee
株式会社フジコー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社フジコー filed Critical 株式会社フジコー
Priority to KR1020127010024A priority Critical patent/KR101351485B1/ko
Priority to JP2011537287A priority patent/JP5390630B2/ja
Priority to CN201080047392.7A priority patent/CN102574036B/zh
Publication of WO2011049140A1 publication Critical patent/WO2011049140A1/ja

Links

Images

Classifications

    • 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
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • 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
    • 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—Ultra-violet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B01D39/2041—Metallic material the material being filamentary or fibrous
    • 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
    • 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
    • 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
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • 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
    • B01J23/74—Iron group metals
    • B01J23/75—Cobalt
    • 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
    • B01J23/74—Iron group metals
    • B01J23/755—Nickel
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J35/39—
    • B01J35/56—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B01D2239/0478—Surface coating material on a layer of the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1208—Porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1291—Other parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/93—Toxic compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/802—Visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light

Definitions

  • the present invention relates to a fibrous filter and an air cleaner. Specifically, for example, the present invention relates to a fibrous filter having a photocatalytic function capable of detoxifying pollutants, antibacterial, and sterilizing, and an air cleaner using such a fibrous filter.
  • the “photocatalytic function” is a catalyst that is excited when irradiated with light energy larger than the band gap energy of its conduction band and valence band, and generates an electron-hole pair to cause oxidation and reduction reactions. This means the function of the substance (photosemiconductor substance).
  • photocatalysts using titanium dioxide (TiO 2 ) in particular are inexpensive, excellent in chemical stability, and have high catalytic activity. Due to their powerful organic substance decomposing activity, At the same time, it can decompose toxic substances such as endotoxin, which is an outer cell wall component of Gram-negative bacteria, and toxins produced by bacteria (for example, verotoxin produced by pathogenic E. coli), and the photocatalyst itself is harmless to the human body. Has the advantage of being.
  • titanium dioxide Since titanium dioxide exhibits photocatalytic activity only under ultraviolet irradiation, it cannot exhibit sufficient catalytic activity under room light containing almost no ultraviolet component. Therefore, titanium dioxide doped with atoms such as nitrogen, carbon and sulfur in the crystal lattice has been proposed as a photocatalyst exhibiting photocatalytic activity under visible light irradiation. In particular, sulfur-doped titanium dioxide absorbs light in the visible light region. It is known that it has a high coefficient and high catalytic activity under visible light (for example, see Patent Document 3).
  • Patent Document 4 discloses that a porous ceramic body carrying titanium oxide is irradiated with ultraviolet rays, and the malodor of gas is removed by the photocatalytic action of titanium oxide.
  • the photocatalyst layer was formed in the surface of the porous ceramics filter by dipping (dipping) in the photocatalyst coating liquid (for example, refer patent document 4 and patent document 5).
  • reference numeral 101 denotes a porous ceramic filter
  • reference numeral 102 denotes a dipping layer
  • reference numeral 103 denotes a crack
  • the present invention was devised in view of the above points, and an object thereof is to provide a fibrous filter capable of improving the strength of the photocatalyst layer and an air cleaner using such a fibrous filter. Is.
  • a fibrous filter body composed of fibers having a diameter of 50 ⁇ m to 500 ⁇ m and having a porosity of 50% to 90%, and a surface of the fiber. And a titanium dioxide film formed by thermal spraying technology.
  • a fibrous filter main body composed of fibers having a diameter of 50 ⁇ m to 500 ⁇ m and a porosity of 50% to 90%;
  • the fiber is composed of aluminum fibers having a diameter of 50 ⁇ m to 500 ⁇ m, the basis weight is 500 g / m 2 to 10,000 g / m 2 , and the porosity is 50% to 90%.
  • a filter main body, a fibrous filter having a titanium dioxide film on which 0.1 to 10% by mass of an antibacterial metal is supported and formed on the surface of the fiber by a thermal spraying technique, and a light applied to the fibrous filter A light source for irradiating the light source.
  • the titanium dioxide film was formed by thermal spraying technology, the titanium dioxide film was formed on the fiber surface so that the titanium dioxide particles pierced, and the upper layer was partially sintered by thermal spraying heat. In this state, the titanium dioxide film is formed, so that cracking is hardly generated and durability can be improved.
  • the titanium dioxide film on the surface of the fibrous filter body is in such a state that the titanium dioxide particles pierce the surface of the fibrous filter body, and the anchor effect provides high adhesion between the fibrous filter body and the titanium dioxide film.
  • the titanium dioxide film that is realized and laminated on the upper layer realizes high adhesion by partially sintering the titanium dioxide particles.
  • the diameter of the fiber which comprises a fibrous filter main body is less than 50 micrometers, the intensity
  • the diameter of the fiber constituting the fibrous filter body exceeds 500 ⁇ m, the amount of fiber occupying in the fixed space is too large. And, since the fiber is excessively present in the fixed space, the existence region of the titanium dioxide film cannot be sufficiently secured, and the ratio of the titanium dioxide film in the fixed space becomes too small. It becomes difficult to fully exhibit the photocatalytic function. Therefore, the diameter of the fibers constituting the fibrous filter body is set to 50 ⁇ m to 500 ⁇ m. It is desirable that the fiber constituting the fibrous filter body has a diameter of 100 ⁇ m to 200 ⁇ m.
  • the porosity of the fibrous filter body is less than 50%, the air resistance becomes too large to make it difficult for air to pass through the fibrous filter body, and the harmful substance (degradable substance) and the titanium dioxide film come into contact with each other. It becomes difficult to do. This means that when the fibrous filter body is used for an air cleaner, it becomes difficult to sufficiently perform the function as an air cleaner.
  • the porosity of the fibrous filter main body exceeds 90%, the amount of fibers occupying in the fixed space is too small.
  • the porosity of the fibrous filter body is set to 50% to 90%.
  • the porosity of the fibrous filter body is preferably 60% to 80%.
  • titanium dioxide has anatase type and rutile type crystal structures, and it is known that anatase type titanium dioxide exhibits a higher photocatalytic function than rutile type titanium dioxide. Yes. Therefore, a high photocatalytic function can be realized by forming a titanium dioxide film so that the anatase crystal structure is 70% by mass or more.
  • anatase-type titanium dioxide is generally more expensive than rutile-type titanium dioxide, it is preferable to use rutile-type titanium dioxide when importance is placed on cost.
  • the crystal lattice of titanium dioxide is doped with sulfur, carbon, nitrogen, etc., or carries a sensitizer which is at least one compound selected from metal complexes or metal salts such as iron, copper, chromium, nickel.
  • a sensitizer which is at least one compound selected from metal complexes or metal salts such as iron, copper, chromium, nickel.
  • the antibacterial action is further enhanced by supporting an antibacterial metal (for example, Ag, Cu, Ni, Co, Zn, etc.) on the titanium dioxide film.
  • an antibacterial metal for example, Ag, Cu, Ni, Co, Zn, etc.
  • the basis weight of the fibrous filter body is less than 500 g / m 2 , the amount of fibers per unit area is too small. And considering that the titanium dioxide film is formed on the surface of the fiber, the amount of fiber is too small, the amount of film formation of the titanium dioxide film per unit area is not sufficient, and the photocatalytic function of the titanium dioxide film is It will be difficult to fully demonstrate. On the other hand, when the basis weight of the fibrous filter main body exceeds 10,000 g / m 2 , the amount of fibers per unit area is too large.
  • the basis weight of the fibrous filter body as a 500g / m 2 ⁇ 10000g / m 2.
  • the basis weight of the fibrous filter main body is preferably 500 g / m 2 to 3000 g / m 2 .
  • the fibers constituting the fibrous filter body include metal fibers (for example, aluminum fibers, stainless steel fibers, nickel fibers), inorganic fibers (for example, glass fibers, carbon fibers, alumina fibers, ceramic fibers, rock fibers, slugs). Fiber), organic fiber (for example, plastic fiber) and the like.
  • metal fibers for example, aluminum fibers, stainless steel fibers, nickel fibers
  • inorganic fibers for example, glass fibers, carbon fibers, alumina fibers, ceramic fibers, rock fibers, slugs. Fiber
  • organic fiber for example, plastic fiber
  • Examples of the light source for irradiating the fibrous filter with light include a black light emitting ultraviolet light, an ultraviolet LED lamp, a visible light LED lamp, a fluorescent lamp, an incandescent lamp, a cold cathode tube (CCFL: Cold Cathode Fluorescent Lamp). It is done.
  • a black light emitting ultraviolet light an ultraviolet LED lamp, a visible light LED lamp, a fluorescent lamp, an incandescent lamp, a cold cathode tube (CCFL: Cold Cathode Fluorescent Lamp). It is done.
  • the strength of the photocatalyst layer is increased by reducing the cracking of the titanium dioxide film and improving the durability.
  • FIG. 1A is a schematic diagram for explaining an example of a fibrous filter to which the present invention is applied.
  • the fibrous filter shown here is formed on the fibrous filter body 1 and the surface of the fibrous filter body 1. And a titanium dioxide film formed thereon.
  • the fibrous filter body 1 is composed of aluminum fibers having a diameter of 50 ⁇ m to 500 ⁇ m (hereinafter, the aluminum fibers constituting the fibrous filter body 1 are referred to as “aluminum fibers”), and the basis weight is 500 g. / M 2 to 10000 g / m 2 and the porosity is 50% to 90%.
  • the titanium dioxide film is formed by causing the titanium dioxide particles 2 that are photocatalyst particles to collide with the surface of the fibrous filter body using a thermal spraying technique.
  • a spraying temperature variable high-speed spraying device described in JP-A-2005-68457 can be used.
  • the titanium dioxide film of the present embodiment is formed by causing the titanium dioxide particles 2 to collide with the fibrous filter body 1 using a thermal spraying technique, the titanium dioxide film is formed on the surface of the aluminum fiber.
  • a titanium dioxide film is formed in such a manner that the particles 2 pierce (see the titanium dioxide particles indicated by symbol g in FIG. 1 (a)), and high adhesion between the aluminum fibers and the titanium dioxide particles 2 due to the anchor effect. Can be realized.
  • the titanium dioxide particles 2 are partially sintered by the heat during thermal spraying (see the titanium dioxide particles indicated by the symbol h in FIG. 1 (a)), thereby high adhesion between the titanium dioxide particles 2. Can be realized.
  • the gap between the aluminum fibers is extremely short compared to the diameter of the hole in the conventional porous ceramic filter (corresponding to the gap between the aluminum fibers). For this reason, the distance between the harmful substance (substance to be decomposed) that passes through the fibrous filter and the titanium dioxide film is short, the harmful substance easily comes into contact with the titanium dioxide film, and the distance between the harmful substance and the titanium dioxide film is short. Therefore, the concentration gradient of harmful substances increases and the mobility of harmful substances increases. Therefore, compared with the case where a porous ceramic filter is used, the fibrous filter of the first embodiment can be expected to improve gas decomposition performance.
  • Tables 1 and 2 show the results of the acetaldehyde decomposition test using the “filter having a photocatalyst layer formed by dipping on a porous ceramic filter” and the acetaldehyde decomposition test using the fibrous filter of the first embodiment. Results are shown.
  • Table 1 shows the decrease in acetaldehyde concentration over time, and a decomposition test of acetaldehyde using a “filter having a photocatalyst layer formed by dipping on a porous ceramic filter” (indicated by symbol i in Table 1).
  • 80 ppm of acetaldehyde decreased in 4 hours
  • 90 ppm in 2 hours Acetaldehyde is reduced.
  • Carbon dioxide is generated by the decomposition of acetaldehyde.
  • Table 2 shows the generation of carbon dioxide over time.
  • "Filter with a photocatalyst layer formed by dipping on a porous ceramic filter” In the acetaldehyde decomposition test (denoted by symbol i in Table 2) using 130, 130 ppm of carbon dioxide was generated in 2 hours, whereas the decomposition of acetaldehyde using the fibrous filter of the first embodiment In the test (indicated by symbol j in Table 2), 150 ppm of carbon dioxide is generated in 2 hours.
  • Table 3 shows the results of a decomposition test of formaldehyde (indicated by symbol m in Table 3) and a result of a decomposition test of acetaldehyde (indicated by symbol n in Table 3) using a “filter having a photocatalytic layer formed by dipping on a porous ceramic filter”. Show). Specifically, the relationship between time and concentration is shown.
  • Table 4 shows the results of the decomposition test of formaldehyde (indicated by symbol m in Table 4) and the results of the decomposition test of acetaldehyde (indicated by symbol n in Table 4) using the fibrous filter of the first embodiment. Show. Specifically, the relationship between time and concentration is shown.
  • the fibrous filter of the first embodiment clearly has improved gas decomposition performance compared to “a filter in which a photocatalyst layer is formed by dipping on a porous ceramic filter”. I understand that.
  • the fibrous filter of the first embodiment is superior in decomposition performance (gas decomposition) and durability as compared with “a filter in which a photocatalyst layer is formed by dipping on a porous ceramic filter”.
  • the fibrous filter of the first embodiment can be manufactured extremely thin, a fibrous filter of approximately 1 mm to 7 mm can be realized, and “a porous ceramic filter having a thickness of 10 mm or more” Compared with a “filter having a photocatalyst layer formed by dipping”, it is excellent in space saving. Furthermore, since it is thin, it is excellent in workability.
  • the description is given by taking aluminum fiber as an example, but the material of the fibrous filter main body does not necessarily need to be an aluminum material, and is a metal such as copper, nickel, titanium, and stainless steel. It may be made of a material, and may be made of a non-metallic material such as glass as long as the fibrous filter body can be formed.
  • Second Embodiment> Another example of the fibrous filter to which the present invention is applied has a fibrous filter body 1 and a titanium dioxide film formed on the surface of the fibrous filter body 1 (see FIG. 1A). This point is the same as in the first embodiment described above.
  • the titanium dioxide film of the present embodiment carries 1% by mass of Ag.
  • the fibrous filter body 1 is made of aluminum fibers having a diameter of 50 ⁇ m to 500 ⁇ m, has a basis weight of 500 g / m 2 to 10000 g / m 2 , and has a porosity as in the first embodiment. Is 50% to 90%.
  • the titanium dioxide film is formed by colliding the titanium dioxide particles 2 that are photocatalyst particles and the Ag particles that are antibacterial materials against the surface of the fibrous filter body using a thermal spraying technique.
  • the spraying temperature variable type high-speed spraying device described in Japanese Patent Application Laid-Open No. 2005-68457 can be used, as in the first embodiment described above. It is.
  • the titanium dioxide particles 2 and the antibacterial metal are caused to collide with the surface of the fibrous filter body by using a thermal spraying technique, thereby simultaneously forming the titanium dioxide film.
  • the case where Ag particles are carried is described as an example.
  • the Ag particles can be supported on the titanium dioxide film, and the Ag particles may be supported by any method.
  • the particles such as Ag may be supported by colliding titanium dioxide particles, on which the particles such as Ag are initially attached to the surface thereof, with the surface of the fibrous filter body using a thermal spraying technique.
  • Ag ions or the like may be supported by an ultraviolet light deposition method or the like.
  • Table 5-1 shows the results of the acetaldehyde decomposition test (indicated by symbol a in Table 5-1) using the “filter having a photocatalyst layer formed by dipping on a porous ceramic filter”, and the second embodiment.
  • the results of a decomposition test of acetaldehyde using the fibrous filter (indicated by symbol b in Table 5-1) are shown. Specifically, the relationship between time and concentration is shown.
  • the fibrous filter of the second embodiment is capable of decomposing acetaldehyde, which is a type of VOC, into water and carbon dioxide to a low concentration (about one billionth). I understand that there is.
  • the antibacterial metal supported by the titanium dioxide film is not necessarily Ag, and other antibacterial metals may be used. Also good.
  • the fibrous filter to which the present invention is applied includes a fibrous filter body 1 and a titanium dioxide film formed on the surface of the fibrous filter body 1 (see FIG. 1A). This point is the same as in the first embodiment described above. Note that the titanium dioxide film of the present embodiment carries 12.5% by mass of zeolite (an example of an adsorbent).
  • the fibrous filter body 1 is made of aluminum fibers having a diameter of 50 ⁇ m to 500 ⁇ m, has a basis weight of 500 g / m 2 to 10000 g / m 2 , and has a porosity as in the first embodiment. Is 50% to 90%.
  • the titanium dioxide film is formed by colliding the titanium dioxide particles 2 that are photocatalyst particles and the zeolite that is the adsorbent with the surface of the fibrous filter body using a thermal spraying technique.
  • the spraying temperature variable type high-speed spraying device described in Japanese Patent Application Laid-Open No. 2005-68457 can be used, as in the first embodiment described above. It is.
  • the titanium dioxide particles 2 and the adsorbent are made to collide with the surface of the fibrous filter body using a thermal spraying technique, so that the zeolite is simultaneously formed with the titanium dioxide film.
  • the zeolite can be supported on the titanium dioxide film, and the zeolite may be supported by any method.
  • the adsorbent supported by the titanium dioxide film is not necessarily zeolite, and other materials such as apatite and activated carbon are used. It may be an adsorbent.
  • FIG. 2 is a schematic diagram for explaining an example of an air purifier to which the present invention is applied.
  • the air purifier 10 shown here has a fan 11 disposed below the inside thereof, and an ultraviolet LED above the fan 11.
  • a lamp 12 is disposed, and a fibrous filter 13 is disposed further above the ultraviolet LED lamp 12.
  • the fan 11 is configured to be able to blow air upward, and when the fan 11 rotates, an air flow is formed such that air is sucked from below the air cleaner 10 and exhausted from above.
  • the ultraviolet LED lamp 12 is configured to be able to irradiate light having a wavelength of 365 nm toward the fibrous filter 13, and the photocatalytic function of the fibrous filter 13 is exhibited by the light from the ultraviolet LED lamp 12. .
  • the fibrous filter 13 uses the fibrous filter of the above-described second embodiment.
  • air containing bacteria, viruses, VOC gas, and harmful gas is sucked from below by the intake action caused by the rotation of the fan 11.
  • the sucked air passes through the fibrous filter 13 so that bacteria, viruses, VOC gas and harmful gas are decomposed and sterilized, and exhausted from above as clean air.
  • Table 6 shows the results of an ammonia decomposition test using an “ionic air cleaner” (indicated by symbol c in Table 6) and the results of an ammonia decomposition test using the air cleaner of the fourth embodiment. (Indicated by d in Table 6). Specifically, the relationship between time and concentration is shown.
  • Table 7 shows the result of a decomposition test of acetaldehyde using an “ionic air cleaner” (indicated by symbol c in Table 7) and the result of a decomposition test of acetaldehyde using the air cleaner of the fourth embodiment. (Indicated by symbol d in Table 7). Specifically, the relationship between time and concentration is shown.
  • the air cleaner of the fourth embodiment can decompose ammonia, which is an odor component, and acetaldehyde, which is a kind of VOC, to a low concentration.
  • FIG. 3 is a schematic view for explaining another example of the air cleaner to which the present invention is applied.
  • the air cleaner 10 shown here has a fan 11 disposed below the inside thereof, and above the fan 11.
  • a visible light LED lamp 14 is disposed, and a fibrous filter 13 is disposed further above the visible light LED lamp 14.
  • the fan 11 is configured to be able to blow air upward, and by rotating the fan 11, an air flow is formed such that air is sucked from below the air cleaner 10 and exhausted from above. This is the same as the fourth embodiment described above.
  • the visible light LED lamp 14 is configured to be able to irradiate light having a wavelength of 415 nm toward the fibrous filter 13, and the photocatalytic function of the fibrous filter 13 is exhibited by the light from the visible light LED lamp 14. It becomes.
  • the fibrous filter 13 uses the fibrous filter of the above-described second embodiment.
  • air containing bacteria, viruses, VOC gas, and harmful gas is sucked from below by the intake action caused by the rotation of the fan 11.
  • the sucked air passes through the fibrous filter 13 so that bacteria, viruses, VOC gas and harmful gas are decomposed and sterilized, and exhausted from above as clean air.
  • Table 8 shows the result of the ammonia decomposition test using the “ionic air cleaner” (indicated by symbol e in Table 8) and the result of the ammonia decomposition test using the air cleaner of the fifth embodiment. (Indicated by symbol f in Table 8). Specifically, the relationship between time and concentration is shown.
  • Table 9 shows the results of the acetaldehyde decomposition test using the “ionic air cleaner” (indicated by symbol e in Table 9) and the results of the acetaldehyde decomposition test using the air cleaner of the fifth embodiment. (Indicated by symbol f in Table 9). Specifically, the relationship between time and concentration is shown.
  • the air cleaner of the fifth embodiment can decompose ammonia, which is an odor component, and acetaldehyde, which is a kind of VOC, to a low concentration.
  • the air cleaner of the fifth embodiment can be realized at a low cost.
  • FIG. 4A is a schematic diagram for explaining still another example of an air cleaner to which the present invention is applied.
  • the air cleaner shown here has a dust collection filter 15 disposed therein, and is a dust collector.
  • a photocatalytic filter portion 16 is disposed adjacent to the filter 15, and the fan 11 is disposed on the opposite side of the photocatalytic filter portion 16 from the dust collection filter 15.
  • the fan 11 is configured so as to form an air flow such as intake from the dust collection filter 15 side by rotating.
  • the photocatalytic filter portion 16 is configured by surrounding a black light 18 with a fibrous filter 13 and a reflecting plate 17.
  • the fibrous filter 13 uses the fibrous filter of the second embodiment described above, and the black light 18 emits a UV sterilization line having a wavelength of 254 nm and a UV ozone ray having a wavelength of 185 nm. It is configured.
  • the air containing the bacteria, virus, VOC gas, and harmful gas is supplied to the photocatalytic filter unit 16 as the fan 11 rotates.
  • the photocatalyst filter part 16 by passing through the fibrous filter 13, bacteria, viruses, VOC gas and harmful gas are decomposed and sterilized, and exhausted as clean air.
  • Table 10 shows the results of the ammonia decomposition test using the “ion + deodorizing filter type air cleaner” (indicated by the symbol p in Table 10) and the ammonia decomposition test using the “activated carbon type air cleaner”.
  • the results (indicated by symbol q in Table 10) and the results of the ammonia decomposition test using the air cleaner of the sixth embodiment (indicated by symbol r in Table 10) are shown. Specifically, the relationship between time and concentration is shown.
  • Table 11 shows the results of the acetaldehyde decomposition test using “ion + deodorizing filter type air purifier” (indicated by “p” in Table 11) and the results of the acetaldehyde decomposition test using “activated carbon type air purifier”. (Shown by symbol q in Table 11) and the results of the acetaldehyde decomposition test using the air cleaner of the sixth embodiment (shown by symbol r in Table 11). Specifically, the relationship between time and concentration is shown.
  • the air cleaner of the sixth embodiment can decompose ammonia, which is an odor component, and acetaldehyde, which is a kind of VOC, to a low concentration.
  • a dust collection filter 15 is disposed in the interior thereof, and the photocatalytic filter section is adjacent to the dust collection filter 15 as in the sixth embodiment. 16 is disposed, and the fan 11 is disposed on the opposite side of the photocatalytic filter portion 16 from the dust collection filter 15 (see FIG. 4A).
  • the fan 11 is configured in such a manner that when it rotates, an air flow is formed such that air is sucked from the dust collection filter 15 side, which is the same as in the sixth embodiment.
  • the photocatalytic filter portion 16 is configured by surrounding a black light 18 with a fibrous filter 13 and a reflecting plate 17.
  • the fibrous filter 13 uses the fibrous filter of the second embodiment described above, and the black light 18 is configured to emit UV ultraviolet light having a wavelength of 365 nm.
  • the air containing the bacteria, virus, VOC gas, and harmful gas is supplied to the photocatalytic filter unit 16 as the fan 11 rotates.
  • the photocatalyst filter part 16 by passing through the fibrous filter 13, bacteria, viruses, VOC gas and harmful gas are decomposed and sterilized, and exhausted as clean air.
  • Table 12 shows the results of the acetaldehyde decomposition test using the air cleaner according to the sixth embodiment (indicated by symbol s in Table 12) and the acetaldehyde decomposition test using the air cleaner according to the seventh embodiment. (Indicated by t in Table 12). Specifically, the relationship between time and concentration is shown.
  • Tables 13 and 14 show the results of a complete decomposition performance test of VOC (acetaldehyde / toluene) using the air cleaner of the seventh embodiment.
  • the symbol u represents acetaldehyde
  • the symbol v in Table 13 represents carbon dioxide
  • the symbol u in Table 14 represents toluene
  • the symbol v in Table 14 represents carbon dioxide.
  • the air cleaner of the seventh embodiment decomposes ammonia, which is an odor component, and acetaldehyde, which is a kind of VOC, to a low concentration at a higher speed than the air cleaner of the sixth embodiment. It can be seen that it is possible. Moreover, it turns out that the decomposition
  • a dust collection filter 15 is disposed in the interior thereof, and the photocatalytic filter section is adjacent to the dust collection filter 15 as in the sixth embodiment. 16 is disposed, and the fan 11 is disposed on the opposite side of the photocatalytic filter portion 16 from the dust collection filter 15 (see FIG. 4A).
  • the fan 11 is configured in such a manner that when it rotates, an air flow is formed such that air is sucked from the dust collection filter 15 side, which is the same as in the sixth embodiment.
  • the photocatalytic filter portion 16 is configured by a cold cathode tube 19 surrounded by a fibrous filter 13.
  • the fibrous filter 13 uses the fibrous filter of the second embodiment described above, and the cold cathode tube 19 is configured to emit a germicidal line having a wavelength of 365 nm.
  • the air containing the bacteria, virus, VOC gas, and harmful gas is supplied to the photocatalytic filter unit 16 as the fan 11 rotates.
  • the photocatalyst filter part 16 by passing through the fibrous filter 13, bacteria, viruses, VOC gas and harmful gas are decomposed and sterilized, and exhausted as clean air.
  • Table 15 shows a case where a commercially available air cleaner equipped with a photocatalyst is used (indicated by reference characters C and D in Table 15) and a case where the air cleaner according to the eighth embodiment is used (reference symbol E in Table 15).
  • the result of the floating bacteria count after the air purifier is operated is shown. Specifically, after spraying Bacillus subtilis in a 1000 L container, the air purifier is operated, and the number of bacteria is measured by sucking the air in the container with a pump.
  • the air purifier according to the eighth embodiment has an extremely high decomposition and sterilization function of Bacillus subtilis.
PCT/JP2010/068515 2009-10-20 2010-10-20 繊維状フィルター及び空気清浄機 WO2011049140A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020127010024A KR101351485B1 (ko) 2009-10-20 2010-10-20 섬유필터 및 공기청정기
JP2011537287A JP5390630B2 (ja) 2009-10-20 2010-10-20 フィルター及び空気清浄機
CN201080047392.7A CN102574036B (zh) 2009-10-20 2010-10-20 纤维状过滤器及空气净化机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009241580 2009-10-20
JP2009-241580 2009-10-20

Publications (1)

Publication Number Publication Date
WO2011049140A1 true WO2011049140A1 (ja) 2011-04-28

Family

ID=43900363

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/068515 WO2011049140A1 (ja) 2009-10-20 2010-10-20 繊維状フィルター及び空気清浄機

Country Status (4)

Country Link
JP (1) JP5390630B2 (ko)
KR (1) KR101351485B1 (ko)
CN (1) CN102574036B (ko)
WO (1) WO2011049140A1 (ko)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012023612A1 (ja) * 2010-08-20 2012-02-23 株式会社フジコー 光触媒皮膜の製造方法及び光触媒皮膜
JP2014046552A (ja) * 2012-08-31 2014-03-17 Fuji Corp 金属繊維複合体及びその製造方法
JP2016002545A (ja) * 2014-06-19 2016-01-12 株式会社フジコー 空気浄化装置
JP2016530918A (ja) * 2012-07-27 2016-10-06 ディ． クロスニィー マーク 空気殺菌及び消毒装置
JP2017127795A (ja) * 2016-01-18 2017-07-27 和興フィルタテクノロジー株式会社 フィルタ用濾材、オイルフィルタ及びフィルタ用濾材製造方法
CN108636394A (zh) * 2018-05-22 2018-10-12 中国科学院宁波材料技术与工程研究所 一种纳米二氧化钛光催化涂层的制备方法
JP2020043920A (ja) * 2018-09-14 2020-03-26 日本無機株式会社 空気清浄装置、及び空気清浄方法
WO2022182308A1 (en) * 2021-02-25 2022-09-01 Okyay Ali Kemal Antimicrobial air filtration device
WO2022182307A1 (en) * 2021-02-25 2022-09-01 Okyay Ali Kemal Antimicrobial air filter
WO2022219356A1 (en) * 2021-04-15 2022-10-20 Filter8 Limited Air purification
KR20220153143A (ko) * 2021-05-10 2022-11-18 한림대학교 산학협력단 항균·항바이러스용 Cu-PMF 및 이의 제조방법

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101522761B1 (ko) * 2012-11-28 2015-05-26 금오공과대학교 산학협력단 가시광응답형 광촉매의 재생 기능을 가지는 공기청정 시스템
CN104436860B (zh) * 2014-12-31 2017-01-18 安徽元琛环保科技股份有限公司 一种负载光触媒的铜纤维过滤网及其制备方法
CN106693554A (zh) * 2017-01-23 2017-05-24 王宇轩 一种基于丝线过滤的空气净化器
KR102276929B1 (ko) * 2019-11-08 2021-07-13 한국광기술원 항균성 광촉매 물질 표면을 갖는 섬유필터와 그 제조방법 및 이를 이용한 유체 정화장치
CN113617617A (zh) * 2021-07-09 2021-11-09 华和互惠(青岛)贸易有限公司 一种ccfl光触媒银离子杀菌灯的加工工艺
KR102659262B1 (ko) * 2021-09-30 2024-04-22 (주)웨이투메이크 반사막이 구비된 공기정화장치 및 그 제조방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216365A (ja) * 1997-10-20 1999-08-10 Tao:Kk 光触媒体、光触媒装置及び収容装置
JPH11333451A (ja) * 1998-05-28 1999-12-07 Raizaa Kogyo Kk 紫外線殺菌浄化方法とその装置
JP2000042320A (ja) * 1998-07-27 2000-02-15 Suzuki Sogyo Co Ltd 機能性フィルター
JP2000325451A (ja) * 1999-05-17 2000-11-28 Tokyo Metallikon Kk 消臭材およびその製造方法
JP2002085534A (ja) * 2000-09-18 2002-03-26 Anzai Kantetsu:Kk 脱臭浄化用エレメントおよびこれを用いた脱臭浄化ユニット並びに同ユニットを用いた脱臭浄化システム
JP2006272038A (ja) * 2005-03-28 2006-10-12 Shimura Shoji Kk フィルター材及びその製造方法
JP2009235660A (ja) * 2008-03-05 2009-10-15 Nissan Motor Co Ltd 触媒付き繊維集合体、その製造方法及び排ガス用浄化装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07155598A (ja) * 1993-12-10 1995-06-20 Toto Ltd 光触媒被膜及び光触媒被膜の形成方法
AU2003301236A1 (en) * 2002-10-17 2004-05-04 N.V. Bekaert S.A. Layered filter structure comprising short metal fibers
CN200966788Y (zh) * 2006-08-17 2007-10-31 谭冰 一种车内解毒除味净化空气特种装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216365A (ja) * 1997-10-20 1999-08-10 Tao:Kk 光触媒体、光触媒装置及び収容装置
JPH11333451A (ja) * 1998-05-28 1999-12-07 Raizaa Kogyo Kk 紫外線殺菌浄化方法とその装置
JP2000042320A (ja) * 1998-07-27 2000-02-15 Suzuki Sogyo Co Ltd 機能性フィルター
JP2000325451A (ja) * 1999-05-17 2000-11-28 Tokyo Metallikon Kk 消臭材およびその製造方法
JP2002085534A (ja) * 2000-09-18 2002-03-26 Anzai Kantetsu:Kk 脱臭浄化用エレメントおよびこれを用いた脱臭浄化ユニット並びに同ユニットを用いた脱臭浄化システム
JP2006272038A (ja) * 2005-03-28 2006-10-12 Shimura Shoji Kk フィルター材及びその製造方法
JP2009235660A (ja) * 2008-03-05 2009-10-15 Nissan Motor Co Ltd 触媒付き繊維集合体、その製造方法及び排ガス用浄化装置

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012023612A1 (ja) * 2010-08-20 2012-02-23 株式会社フジコー 光触媒皮膜の製造方法及び光触媒皮膜
JPWO2012023612A1 (ja) * 2010-08-20 2013-10-28 株式会社フジコー 光触媒皮膜の製造方法及び光触媒皮膜
JP5723883B2 (ja) * 2010-08-20 2015-05-27 株式会社フジコー 光触媒皮膜の製造方法及び光触媒皮膜
JP2016530918A (ja) * 2012-07-27 2016-10-06 ディ． クロスニィー マーク 空気殺菌及び消毒装置
JP2014046552A (ja) * 2012-08-31 2014-03-17 Fuji Corp 金属繊維複合体及びその製造方法
JP2016002545A (ja) * 2014-06-19 2016-01-12 株式会社フジコー 空気浄化装置
JP2017127795A (ja) * 2016-01-18 2017-07-27 和興フィルタテクノロジー株式会社 フィルタ用濾材、オイルフィルタ及びフィルタ用濾材製造方法
CN108636394A (zh) * 2018-05-22 2018-10-12 中国科学院宁波材料技术与工程研究所 一种纳米二氧化钛光催化涂层的制备方法
CN108636394B (zh) * 2018-05-22 2021-01-12 中国科学院宁波材料技术与工程研究所 一种纳米二氧化钛光催化涂层的制备方法
JP2020043920A (ja) * 2018-09-14 2020-03-26 日本無機株式会社 空気清浄装置、及び空気清浄方法
WO2022182308A1 (en) * 2021-02-25 2022-09-01 Okyay Ali Kemal Antimicrobial air filtration device
WO2022182307A1 (en) * 2021-02-25 2022-09-01 Okyay Ali Kemal Antimicrobial air filter
WO2022219356A1 (en) * 2021-04-15 2022-10-20 Filter8 Limited Air purification
KR20220153143A (ko) * 2021-05-10 2022-11-18 한림대학교 산학협력단 항균·항바이러스용 Cu-PMF 및 이의 제조방법
KR102600129B1 (ko) 2021-05-10 2023-11-09 한림대학교 산학협력단 항균·항바이러스용 Cu-PMF 및 이의 제조방법

Also Published As

Publication number Publication date
CN102574036A (zh) 2012-07-11
KR101351485B1 (ko) 2014-01-14
JP5390630B2 (ja) 2014-01-15
JPWO2011049140A1 (ja) 2013-03-14
KR20120073281A (ko) 2012-07-04
CN102574036B (zh) 2015-01-14

Similar Documents

Publication Publication Date Title
JP5390630B2 (ja) フィルター及び空気清浄機
US20240148929A1 (en) Purified hydrogen peroxide gas generation methods and devices
Ochiai et al. Photoelectrochemical properties of TiO2 photocatalyst and its applications for environmental purification
Chen et al. Photocatalytic oxidation for antimicrobial control in built environment: a brief literature overview
CN108452362A (zh) 杀菌模组及杀菌设备
Poormohammadi et al. Are photocatalytic processes effective for removal of airborne viruses from indoor air? A narrative review
KR20100061665A (ko) Ｕｖ 공기처리 방법 및 장치
WO2012018244A1 (en) A filter and device for treating air
CN104422019A (zh) 复合多功能室内空气污染治理机
Truong et al. A critical innovation of photocatalytic degradation for toxic chemicals and pathogens in air
Kang et al. A novel and facile synthesis of Ag-doped TiO2 nanofiber for airborne virus/bacteria inactivation and VOC elimination under visible light
JP2010240053A (ja) 光触媒脱臭機
JP5723883B2 (ja) 光触媒皮膜の製造方法及び光触媒皮膜
JP2006334494A (ja) フィルター、空気洗浄装置、冷凍機器および水質浄化装置
Dhabarde et al. Inactivation of SARS-CoV-2 and other human coronaviruses aided by photocatalytic one-dimensional titania nanotube films as a self-disinfecting surface
MX2007006759A (es) Inactivacion de agentes biologicos dispersos en medio gaseoso por un semi-conductor fotoactivo.
JP3991776B2 (ja) 光触媒フィルター
KR200407654Y1 (ko) 광촉매가 도포된 온열매트
US20230173133A1 (en) Atmospheric plasma filter
TWI308629B (ko)
US20230263929A1 (en) Filter for sanitizing air in indoor environments
RU2751199C1 (ru) Устройство очистки воздуха
KR102534987B1 (ko) 광촉매제가 도포된 공간 내부 공기살균 및 정화용 셀
JP3098438U (ja) 空気浄化機能有照明灯
Barudin Antibacterial and Cell Interaction of TiO2-based Nanoparticles and Nanotubes

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080047392.7

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10824989

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20127010024

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2011537287

Country of ref document: JP

122 Ep: pct application non-entry in european phase

Ref document number: 10824989

Country of ref document: EP

Kind code of ref document: A1