WO2022182307A1 - Antimicrobial air filter - Google Patents
Antimicrobial air filter Download PDFInfo
- Publication number
- WO2022182307A1 WO2022182307A1 PCT/TR2021/051468 TR2021051468W WO2022182307A1 WO 2022182307 A1 WO2022182307 A1 WO 2022182307A1 TR 2021051468 W TR2021051468 W TR 2021051468W WO 2022182307 A1 WO2022182307 A1 WO 2022182307A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- nanoparticles
- air
- permeable structure
- hole pairs
- Prior art date
Links
- 230000000845 anti-microbial effect Effects 0.000 title claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 8
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 9
- 241000894006 Bacteria Species 0.000 abstract description 3
- 241000233866 Fungi Species 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 241000243142 Porifera Species 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 239000003124 biologic agent Substances 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000002538 fungal effect Effects 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007787 electrohydrodynamic spraying Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- A61L9/205—Ultra-violet radiation using a photocatalyst or photosensitiser
-
- 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
-
- 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
-
- 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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/14—Filtering means
-
- 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
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9202—Linear dimensions
-
- 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
- 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
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Analytical Chemistry (AREA)
- Veterinary Medicine (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Filtering Materials (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to an air filter having antimicrobial feature. Accordingly, a filter including titanium dioxide nanoparticles on a permeable structure, has been developed. The production of this filter by chemical vapor deposition has been also described. TiO2 nanoparticles (3) form electron-hole pairs under ultraviolet radiation. Because of the nanoparticles (3) size in the order of nanometers, these electron-hole pairs can also interact with the environment surrounding the nanoparticle (3) before they coalesce. During this interaction, radicals are released that cause the degradation of organic molecules. Thus, nanoparticles (3) under ultraviolet radiation can be used against microbes such as bacteria, fungi and mold in the air. TiO2 nanoparticles (3) show a high photocatalytic effect especially in the ultraviolet band in the wavelength range of 100 to 280 nm, referred to as UV-C.
Description
ANTIMICROBIAL AIR FILTER
Technical Field
The present invention relates to an air filter having antimicrobial feature and a method to produce this filter.
Background of the Invention
The usage of ultraviolet radiation for the cleaning of environments with microbial contamination, including bacterial and fungal microorganisms, is extensively known. However, it is necessary to operate for long periods or with very high intensity radiation to obtain reliable results.
In the case of exposing the photocatalytic materials to radiation, the cleaning process can be performed more quickly and reliably.
Various photocatalytic antimicrobial coatings have been disclosed in "Photocatalytic antimicrobial coatings" (Ramsden, Jeremy. (2015). Photocatalytic antimicrobial coatings. Nanotechnology Perceptions. 11. 146-168. 10.4024/N12RA15A.ntp.011.03.).
Bacteria cleaning of the gaseous medium, which is passed through a tube with an inner surface coated by titanium dioxide under ultraviolet radiation has been disclosed in "Biological Agent Inactivation in a Flowing Air Stream by Photocatalysis" (Keller, Valerie & Keller, Nicolas & Ledoux, Marc & Lett, Marie-Claire. (2005). Biological Agent Inactivation in a Flowing Air Stream by Photocatalysis. Chemical communications (Cambridge, England). 23. 2918-20. 10.1039/b503638k.).
Formation of zinc oxide and titanium dioxide nanoparticles on a porous polyvinylidene difluoride membrane by chemical vapor deposition method to take advantage of their photocatalytic effects has been disclosed in "Chemical Vapor Deposition of Photocatalyst Nanoparticles on PVDF Membranes for Advanced Oxidation Processes" (Filpo, Giovanni & Pantuso, Elvira & Armentano, Katia & Formoso, Patrizia & Di Profio, Gianluca & Poerio, Teresa & Fontananova, Enrica & Meringolo, Carmen & Mashin, Aleksandr & Nicoletta, Fiore. (2018).
Chemical Vapor Deposition of Photocatalyst Nanoparticles on PVDF Membranes for Advanced Oxidation Processes. Membranes. 8. 35. 10.3390/membranes8030035.).
Brief Description of the Invention
The object of the present invention is to develop an air filter having antimicrobial feature. Accordingly, a filter including titanium dioxide nanoparticles on a permeable structure, has been developed. The production of this filter by chemical vapor deposition has been also described.
Description of Drawings
The drawings and related explanations used to better demonstrate the filter developed with the invention are given below.
Figure-1 is the perspective view of a filter according to invention.
Figure-2 is the schematic view of a monatomic molecules coated filter according to the present invention.
Figure-3 is the schematic view of the molecular structures included in a filter according to the present invention.
Figure-4 the schematic view of a TiC>2 molecules coated filter according to the present invention.
Figure-5 the schematic view of a ZnO molecules coated filter according to the present invention. Figure-6 the schematic view of a SnO molecules coated filter according to the present invention.
Figure-7 the schematic view of a AgC>2 molecules coated filter according to the present invention.
Figure-8 the schematic view of a CuC>2 molecules coated filter according to the present invention.
Figure-9 the schematic view of a CuC>3 molecules coated filter according to the present invention.
Figure-10 the schematic view of a Cu04 molecules coated filter according to the present invention.
Figure-11 is A-A cross-sectional view of the rope composing the web of the filter according to the present invention.
Figure-12 is the schematic view of chaotic web structure of the filter according to the present invention.
The parts in the drawings are numbered and the corresponding numbers are given below.
1. Filter
2. Web
3. Nanoparticle
4. Ti02
5. ZnO
6. SnO
7. Ag02
8. Cu02
9. Cu03
10. Cu04
Detailed Description of the Invention
The filter (1) according to the invention basically consists of a permeable structure and titanium dioxide (Ti02) nanoparticles (3) on this permeable structure.
T1O2 nanoparticles (3) form electron-hole pairs under ultraviolet radiation. Because of the nanoparticles (3) size in the order of nanometers, these electron-hole pairs can also interact with the environment surrounding the nanoparticle (3) before they coalesce. During this interaction, radicals are released that cause the degradation of organic molecules. Thus,
nanoparticles (3) under ultraviolet radiation can be used against microbes such as bacteria, fungi and mold in the air. T1O2 nanoparticles (3) show a high photocatalytic effect especially in the ultraviolet band in the wavelength range of 100 to 280 nm, referred to as UV-C.
The permeable structure can be a web (2) (mesh) or an open-cell sponge. To allow the full utilization of the nanoparticles (3) by adequately penetrating the radiation inside, the permeable structure is preferably in a form with a small thickness relative to the surface area, for example in a planar form or in the form of the surface of a three-dimensional structure.
The web (2) is based on fabric and/or polymer and/or metal wire/grid and is not affected by photocatalyst activity. The web (2) may be in the form of woven, knitted or three- dimensionally woven derived from fibers, fibers, or wires with a diameter of 50 to 1500 pm. These fibers, fibers or strands can have a frequency of 100 to 10,000 units per square millimeter. Web (2) preferably has a mesh size of 20 to 200 pm.
Thus, the web (2) can be effective against a wide variety of microorganisms. Nevertheless, web (2) may also have a larger mesh to act selectively against certain microorganisms. For example, for use against microorganisms over a certain size, mesh sizes which are large enough to be less likely to interact with smaller microorganisms, may be selected.
The sponge can function without being affected by photocatalyst activity arising from a material such as polymers and/or metal. The sponge preferably has an average cell diameter of 50 to 1500 pm. Thus, the sponge can be effective against a wide variety of microorganisms. However, the sponge may also have a larger cell diameter to act selectively against certain microorganisms. For example, for use against microorganisms over a certain size, mesh sizes which are large enough to be less likely to interact with smaller microorganisms, may be selected.
The diameters of the nanoparticles (3) are preferably range between 10 and 100 nm. The web (2) forming the filters (1) can be coated with molecules having different compounds due to its structure. T1O2 (4), ZnO (5), SnO (6), AgC>2 (7), CuC>2 (8), CuC>3 (9), CuC>4 (10) and any and/or more than one mixture of metal oxide components can be applied onto web (2) according to the region to be applied and the activity status.
The web (2) can have a square structure in certain dimensions, but it can also have a structure consisting of chaotic layers such as a fiber web. Different methods such as electro spraying or nanoweb can be used to create this structure. The efficiency of filters (1) can be rearranged by creating webs (2) having different dispersed structures according to the method used. The filter (1) according to the invention is produced by depositing nanoparticles (3) on the permeable structure by means of chemical vapor deposition. Titanium is applied to the permeable structure by sputtering method in the presence of oxygen (O2). T1O2 nanoparticles (3) are formed on the permeable structure fixedly when the oxygen reacts with both the permeable structure and the titanium. Argon is also given to the environment along with oxygen. The reaction can be regulated as desired by adjusting the oxygen-argon ratio.
The antimicrobial air filter (1) according to the present invention, can also be used for cleaning the gases containing organic matter in general, apart from the air having bacterial and fungal contamination effect.
The filter (1) can be produced with different sizes and cassettes and can be used as a standard product as an air cleaner in vacuum cleaners, air conditioning and ventilation systems.
Claims
1. A filter (1); characterized in that nanoparticles (3) creates a fabric and/or polymer and/or metal wire/grid structured permeable web (2) and forms electron-hole pairs within the wavelength range of 100 to 280 nm, referred UV-C on this permeable structure and these nanoparticles are coated with titanium dioxide (TiCh) deposited by chemical vapor deposition method, to produce an air filter having antimicrobial feature.
2. A filter (1) according to Claim 1, characterized in that titanium is applied to permeable structure by sputtering method with oxygen (O2).
3. A filter (1); characterized in that nanoparticles (3) creates a polymer and/or metal structured permeable web (2) and forms electron-hole pairs within the wavelength range of 100 to 280 nm, referred UV-C on this permeable structure and these nanoparticles are coated with titanium dioxide (TiCh) deposited by chemical vapor deposition method, to produce an air filter having antimicrobial feature.
4. A filter (1) according to Claim 3, characterized in that titanium is applied to permeable structure by sputtering method with oxygen (O2).
5. A filter (1) A filter (1) according to any of previous claims, characterized in that it can be produced with different sizes and cassettes and can be used as an air cleaner in vacuum cleaners, air conditioning and ventilation systems.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2021/003212 | 2021-02-25 | ||
| TR2021/003212A TR202103212A2 (en) | 2021-02-25 | 2021-02-25 | ANTIMICROBIAL AIR FILTER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022182307A1 true WO2022182307A1 (en) | 2022-09-01 |
Family
ID=76503341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2021/051468 WO2022182307A1 (en) | 2021-02-25 | 2021-12-23 | Antimicrobial air filter |
Country Status (2)
| Country | Link |
|---|---|
| TR (1) | TR202103212A2 (en) |
| WO (1) | WO2022182307A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011049140A1 (en) * | 2009-10-20 | 2011-04-28 | 株式会社フジコー | Fibrous filter and air purification device |
| US20130034470A1 (en) * | 2011-08-03 | 2013-02-07 | Honeywell International Inc. | Led activated photocatalyst air filter |
| US20190113246A1 (en) * | 2017-10-17 | 2019-04-18 | Molekule Inc. | System and method for photoelectrochemical air purification |
| US20200030731A1 (en) * | 2018-07-26 | 2020-01-30 | Molekule Inc. | Fluid filtration system and method of use |
-
2021
- 2021-02-25 TR TR2021/003212A patent/TR202103212A2/en unknown
- 2021-12-23 WO PCT/TR2021/051468 patent/WO2022182307A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011049140A1 (en) * | 2009-10-20 | 2011-04-28 | 株式会社フジコー | Fibrous filter and air purification device |
| US20130034470A1 (en) * | 2011-08-03 | 2013-02-07 | Honeywell International Inc. | Led activated photocatalyst air filter |
| US20190113246A1 (en) * | 2017-10-17 | 2019-04-18 | Molekule Inc. | System and method for photoelectrochemical air purification |
| US20200030731A1 (en) * | 2018-07-26 | 2020-01-30 | Molekule Inc. | Fluid filtration system and method of use |
Also Published As
| Publication number | Publication date |
|---|---|
| TR202103212A2 (en) | 2021-04-21 |
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