WO2001064318A1 - Photocatalytic led purifier - Google Patents

Photocatalytic led purifier Download PDF

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Publication number
WO2001064318A1
WO2001064318A1 PCT/KR2001/000302 KR0100302W WO0164318A1 WO 2001064318 A1 WO2001064318 A1 WO 2001064318A1 KR 0100302 W KR0100302 W KR 0100302W WO 0164318 A1 WO0164318 A1 WO 0164318A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
purifier
photocatalytic
photocatalyst
ultraviolet
Prior art date
Application number
PCT/KR2001/000302
Other languages
French (fr)
Inventor
Hak-Soo Kim
Ju-Hyun Lee
Soon-Jae Yu
Moo-Seong Kim
Original Assignee
Kim Hak Soo
Lee Ju Hyun
Yu Soon Jae
Kim Moo Seong
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 Kim Hak Soo, Lee Ju Hyun, Yu Soon Jae, Kim Moo Seong filed Critical Kim Hak Soo
Priority to AU2001237753A priority Critical patent/AU2001237753A1/en
Publication of WO2001064318A1 publication Critical patent/WO2001064318A1/en

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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
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8678—Removing components of undefined structure
    • B01D53/8687—Organic components
    • 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
    • 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
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B01J35/39—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
    • F24F8/97—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for removing tobacco smoke
    • 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
    • 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 photocatalytic purifier adapted to eliminate various pollutants such as volatile organic materials, cigarette smokes and the like contained in the air utilizing photocatalyst, and more particularly to a purifier utilizing photocatalytic light emitting diode (LED) for directly coating photocatalyst to an LED of ultraviolet region to thereby excite the photocatalyst.
  • LED photocatalytic light emitting diode
  • an air cleaner for removing various pollutants such as volatile organic materials, cigarette smokes and the like contained in the air is constructed to include an ultraviolet lamp and a photocatalyst.
  • the present invention is disclosed to solve the aforementioned problems and it is an object of the present invention to provide a photocatalytic light emitting diode (hereinafter referred to as LED) purifier adapted to directly coat a photocatalyst to LED of ultraviolet region to enable to drive the photocatalyst at a low energy level of 3-5 volts.
  • LED photocatalytic light emitting diode
  • Figure 1 schematically shows a purifier using a photocatalytic LED according to the present invention.
  • Figure 2 is a characteristic drawing for illustrating an operational principle of photocatalyst applied to the present invention.
  • a photocatalytic LED purifier comprising: an electric power source for supplying a direct current (DC) voltage of low energy; an LED for receiving the DC voltage from the electric power source to radiate light energy of ultraviolet wave band; and a photocatalyst for receiving ultraviolet rays radiated from the LED to absorb light energy exceeding band gap for oxidation and dissolution of pollutant materials, the purifier further comprising: an optical transmission line for transmitting ultraviolet rays radiated from the LED; and an ultraviolet penetration unit for radiating the ultraviolet rays transmitted through the optical transmission line to the photocatalyst, wherein the photocatalyst is formed by coating a photocatalytic material to surface of the ultraviolet penetration unit and the photocatalyst is a photocatalytic film using titanium dioxide as main catalyst.
  • DC direct current
  • Figure 1 schematically shows a purifier using a photocatalytic LED according to the present invention, where the purifier includes an electric power source 10 comprised of a cathode 12 and an anode 14, an insulator 20 for insulating the cathode 12 from the anode 4, and LED 30 for receiving voltage from the electric power source 10 to emit ultraviolet rays, an optical transmission line 40 of optically functioning glassy material for transmitting ultraviolet rays emitted from the LED 30, an ultraviolet penetration unit 50 for allowing the ultraviolet transmitted from the optical transmission line 40 to penetrate, and a photocatalyst 60 for receiving the ultraviolet penetrated through the ultraviolet penetration unit 50 to generate electron hole pair thereinside when the same is excited by ultraviolet rays having a wave band having energy exceeding band gap G.
  • the purifier includes an electric power source 10 comprised of a cathode 12 and an anode 14, an insulator 20 for insulating the cathode 12 from the anode 4, and LED 30 for receiving voltage from the electric power source 10 to emit ultraviolet rays,
  • the power source 10 serves to generate a low energy DC voltage (3 - 5 volts) to drive a low power consuming LED 30, where the LED 30 is a semiconductor LED of ultraviolet region made of gallium nitride (GaN) material for receiving the low energy of DC voltage (3 - 5 volts) from the power source 10 to generate an optical energy of ultraviolet wave band ranging from 350 - 400 nm.
  • the LED 30 is a semiconductor LED of ultraviolet region made of gallium nitride (GaN) material for receiving the low energy of DC voltage (3 - 5 volts) from the power source 10 to generate an optical energy of ultraviolet wave band ranging from 350 - 400 nm.
  • the photocatalyst 60 being a titanium dioxide (T ⁇ 0 2 ) film capable of changing radiated optical energy to chemical energy, is coated on surface of the ultraviolet penetration unit 50.
  • the photocatalyst 60 is made by a process where T ⁇ 0 2 particles are mixed with polymer to produce a coating paste, and the coating paste is thinly coated on surface of one of carriers such as glassy product, silica gel, porous ceramics and non-porous ceramics, which is then dried and heat-treated.
  • Figure 2 is a characteristic drawing for illustrating an operational principle of photocatalyst applied to the present invention.
  • the photocatalyst 60 possesses a valence band (E), a conduction band (D) and a band gap (G), where the band gap (G), being an intrinsic value of the photocatalyst 60, is approximately 3eV in case of T ⁇ 0 2 and 400 mm converted in wavelength.
  • the photocatalyst 60 is not limited to T ⁇ 0 2 but may be a single or composite metallic dioxide such as tungsten dioxide (W0 3 ) or zinc dioxide.
  • the GaN LED 30 receives the DC voltage (3 - 5 voltages) supplied from the power source 10 to radiate optical energy of ultraviolet wavelength band.
  • the ultraviolet rays ranging between 350 and 400 nm emitted from the LED 30 is transmitted through an optical transmission line 40 while the ultraviolet rays transmitted through the optical transmission line 40 penetrate the ultraviolet penetration unit 50 to be radiated to the photocatalyst 60.
  • VOC volatile organic compound
  • Photocatalytic deodo ⁇ zation reaction is possible under room temperature, such that 0 2 ⁇ generated by reduction of oxygen becomes OH radicals of strong oxidation force through hydrogen peroxide, or becomes water or oxygen.
  • the present invention is not to be limited to such a construction but for instance, can be applied to various disposal system of wastes containing pollutants such as city water, sewage and industrial wastes, odor removal from kimchi in refrigerator and maritime pollution disposal, without departing from the scope or spirit of the present invention.
  • the present invention is not to be limited to such a construction but, for instance, can be applied to a power supply system where a battery or the like is intrinsically installed in the photocatalytic purifier, without departing from the scope or spirit of the present invention, thereby enabling to use at a place where no outside power source is available.
  • preferred embodiment of the present invention may obtain hydrogen as next generation alternative energy source from photocatalytic water dissolution reaction to thereby solve environmentally polluted problems by way of purified energy development.
  • photocatalytic LED purifier thus described according to the present invention in that photocatalyst is directly coated on an LED of ultraviolet region to enable to drive the photocatalyst at a lower energy level (3 - 5 voltages) and to drive a purifying system at a place where no outside power source is available.
  • LED is used to greatly increase life of the system and to enable to miniaturize the system for increased purifying efficiency.

Abstract

A photocatalytic LED purifier comprising: an electric power source for supplying a direct current (DC) voltage of low energy; an LED for receiving the DC voltage from the electric power source to radiate light energy of ultraviolet wave band; and a photocatalytic for receiving ultraviolet rays radiated from the LED to absorb light energy exceeding band gap for oxidation and dissolution of pollutant materials, such that the LED of ultraviolet region is directly coated by photocatalytic to enable to drive the photocatalytic with a low level of energy (3 ∩ 5 voltages) for increased energy efficiency.

Description

TITLE OF THE I NVENTION
PHOTOCATALYTIC LED PURIFI ER
FI ELD OF THE INVENTION AND PRIOR ART THEREOF
The present invention relates to a photocatalytic purifier adapted to eliminate various pollutants such as volatile organic materials, cigarette smokes and the like contained in the air utilizing photocatalyst, and more particularly to a purifier utilizing photocatalytic light emitting diode (LED) for directly coating photocatalyst to an LED of ultraviolet region to thereby excite the photocatalyst.
In general, an air cleaner (or purifier) for removing various pollutants such as volatile organic materials, cigarette smokes and the like contained in the air is constructed to include an ultraviolet lamp and a photocatalyst.
In the air purifier thus constructed, when ultraviolet rays are emitted from the ultraviolet lamp toward the photocatalyst and the photocatalyst receives the ultraviolet rays to absorb photo energy exceeding band gap, and electron excitation occurs where electrons filled up in a valence band moves to a conduction band.
When the electrons are excited, various pollutants such as volatile organic materials, cigarette smokes and the like act as donors of electrons in the holes remaining at the valence band to oxidize and dissolve the various pollutants contained in the room air, thereby purifying the room air.
TECH NICAL SUBJECT TO BE ACCOMPLISHED
However, there is a problem in the air purifying system using photocatalyst according to the prior art in that resistance heating electron emission type (by way of example, electric bulb) or plasma type (by way of example, fluorescent light) of ultraviolet region is used as excitation source for exciting the photocalalyst to need a high energy exceeding 30-40 volts, thereby restricting use thereof only to a place where a high energy electric source is available.
There is another problem in that light emitting energy consumption at energy band unnecessary in that spectrum tends to decrease energy efficiency, and scale and design are restricted in system construction due to limited durability and volume of light source.
The present invention is disclosed to solve the aforementioned problems and it is an object of the present invention to provide a photocatalytic light emitting diode (hereinafter referred to as LED) purifier adapted to directly coat a photocatalyst to LED of ultraviolet region to enable to drive the photocatalyst at a low energy level of 3-5 volts.
It is another object of the present invention to provide a photocatalytic LED purifier adapted to use only optical spectrum of energy band necessary for exciting hole carriers in photocatalyst to thereby enable to use photocatalyst of high energy efficiency.
It is still another object of the present invention to provide a photocatalytic LED purifier adapted to enable to greatly prolong system life by using an LED and to enable a miniaturization for increased purifying efficiency
BRIEF DESCRI PTION OF THE DRAWINGS
Figure 1 schematically shows a purifier using a photocatalytic LED according to the present invention; and
Figure 2 is a characteristic drawing for illustrating an operational principle of photocatalyst applied to the present invention. DETAI LED DESCRI PTION OF THE INVENTION
In accordance with one object of the present invention, there is provided a photocatalytic LED purifier, the purifier comprising: an electric power source for supplying a direct current (DC) voltage of low energy; an LED for receiving the DC voltage from the electric power source to radiate light energy of ultraviolet wave band; and a photocatalyst for receiving ultraviolet rays radiated from the LED to absorb light energy exceeding band gap for oxidation and dissolution of pollutant materials, the purifier further comprising: an optical transmission line for transmitting ultraviolet rays radiated from the LED; and an ultraviolet penetration unit for radiating the ultraviolet rays transmitted through the optical transmission line to the photocatalyst, wherein the photocatalyst is formed by coating a photocatalytic material to surface of the ultraviolet penetration unit and the photocatalyst is a photocatalytic film using titanium dioxide as main catalyst.
Preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.
Figure 1 schematically shows a purifier using a photocatalytic LED according to the present invention, where the purifier includes an electric power source 10 comprised of a cathode 12 and an anode 14, an insulator 20 for insulating the cathode 12 from the anode 4, and LED 30 for receiving voltage from the electric power source 10 to emit ultraviolet rays, an optical transmission line 40 of optically functioning glassy material for transmitting ultraviolet rays emitted from the LED 30, an ultraviolet penetration unit 50 for allowing the ultraviolet transmitted from the optical transmission line 40 to penetrate, and a photocatalyst 60 for receiving the ultraviolet penetrated through the ultraviolet penetration unit 50 to generate electron hole pair thereinside when the same is excited by ultraviolet rays having a wave band having energy exceeding band gap G.
The power source 10 serves to generate a low energy DC voltage (3 - 5 volts) to drive a low power consuming LED 30, where the LED 30 is a semiconductor LED of ultraviolet region made of gallium nitride (GaN) material for receiving the low energy of DC voltage (3 - 5 volts) from the power source 10 to generate an optical energy of ultraviolet wave band ranging from 350 - 400 nm.
The photocatalyst 60, being a titanium dioxide (Tι02) film capable of changing radiated optical energy to chemical energy, is coated on surface of the ultraviolet penetration unit 50. The photocatalyst 60 is made by a process where Tι02 particles are mixed with polymer to produce a coating paste, and the coating paste is thinly coated on surface of one of carriers such as glassy product, silica gel, porous ceramics and non-porous ceramics, which is then dried and heat-treated.
Figure 2 is a characteristic drawing for illustrating an operational principle of photocatalyst applied to the present invention.
As illustrated in Figure 2, the photocatalyst 60 possesses a valence band (E), a conduction band (D) and a band gap (G), where the band gap (G), being an intrinsic value of the photocatalyst 60, is approximately 3eV in case of Tι02 and 400 mm converted in wavelength.
When optical energy is radiated to the Tι02 photocatalyst 60, an electron e and hole h+ pair are produced in the photocatalyst 60 to be moved to surface, and when reacted with absorption material acid, A is reduced to A while alkali R is oxidized to R+, causing a photocatalytic reaction to occur.
Meanwhile, it should be noted that the photocatalyst 60 is not limited to Tι02 but may be a single or composite metallic dioxide such as tungsten dioxide (W03) or zinc dioxide.
Now, operational effect of the purifier utilizing the photocatalytic LED thus constructed will be described.
First of all, when a low energy DC voltage of 3 - 5 volts is supplied through the cathode 12 and the anode 14 at the power source 10, the GaN LED 30 receives the DC voltage (3 - 5 voltages) supplied from the power source 10 to radiate optical energy of ultraviolet wavelength band.
The ultraviolet rays ranging between 350 and 400 nm emitted from the LED 30 is transmitted through an optical transmission line 40 while the ultraviolet rays transmitted through the optical transmission line 40 penetrate the ultraviolet penetration unit 50 to be radiated to the photocatalyst 60.
Successively, when the photocatalyst 60 which has received the ultraviolet rays of 350 ~ 400 nm radiated from the ultraviolet penetration unit 50 is excited by light of wavelength having energy exceeding band gap (G), electrons filled in at the valence band (E) in the photocatalyst 60 produce holes h+ at a place where e is extracted as excitation phenomenon of electrons moving to the conduction band (D) as illustrated in Figure 2, the state of which is called an excited state of the photocatalyst 60.
At this time, because oxidation force possessed by the hole h+ is much greater than the reduction force possessed by the excited electron e , various pollutants such as volatile organic materials or cigarette smokes contained in the room air act to the hole h+ remaining at the valence band E as donors of electrons to oxidate and decompose the various pollutants, such that chemical reaction as under occurs from surface of the photocatalyst 60 to thereby purify
VOC (volatile organic compound) → C02 + H20 + Mineral acid
(inorganic acid)
I n other words, when optical energy of 350 - 400 nm is irradiated to the photocatalyst 60, the organic materials in the air is oxidized into water (H20) and carbon dioxide (C02) to remove odor.
Photocatalytic deodoπzation reaction is possible under room temperature, such that 02 ~ generated by reduction of oxygen becomes OH radicals of strong oxidation force through hydrogen peroxide, or becomes water or oxygen.
Meanwhile, having described preferred embodiment of the present invention with reference to an air purifier for removing various pollutants such as volatile organic materials or cigarette smokes contained in the room air, the present invention is not to be limited to such a construction but for instance, can be applied to various disposal system of wastes containing pollutants such as city water, sewage and industrial wastes, odor removal from kimchi in refrigerator and maritime pollution disposal, without departing from the scope or spirit of the present invention.
Furthermore, although the present invention has described a power source supplying power to the semiconductor LED 30 using the power source
10 comprised of the cathode 12 and the anode 14, the present invention is not to be limited to such a construction but, for instance, can be applied to a power supply system where a battery or the like is intrinsically installed in the photocatalytic purifier, without departing from the scope or spirit of the present invention, thereby enabling to use at a place where no outside power source is available.
Still furthermore, it should be apparent that preferred embodiment of the present invention may obtain hydrogen as next generation alternative energy source from photocatalytic water dissolution reaction to thereby solve environmentally polluted problems by way of purified energy development.
EFFECT OF THE INVENTION
As apparent from the foregoing, there is an advantage in the photocatalytic LED purifier thus described according to the present invention in that photocatalyst is directly coated on an LED of ultraviolet region to enable to drive the photocatalyst at a lower energy level (3 - 5 voltages) and to drive a purifying system at a place where no outside power source is available.
There is another advantage in that only optical spectrum of energy band necessary for exciting hole carriers in the photocatalyst is used to thereby improve energy efficiency.
There is still another advantage in that LED is used to greatly increase life of the system and to enable to miniaturize the system for increased purifying efficiency.

Claims

WHAT IS CLAIMED IS:
1 A photocatalytic LED purifier, the purifier comprising: an electric power source for supplying a direct current (DC) voltage of low energy; an LED for receiving the DC voltage from the electric power source to radiate light energy of ultraviolet wave band; and a photocatalyst for receiving ultraviolet rays radiated from the LED to absorb light energy exceeding band gap for oxidation and dissolution of pollutant materials
2 The purifier as defined in claim 1 further comprising: an optical transmission line for transmitting ultraviolet rays radiated from the LED; and an ultraviolet penetration unit for radiating the ultraviolet rays transmitted through the optical transmission line to the photocatalyst
3 The purifier as defined in claim 1 , wherein the photocatalyst is formed by coating a photocatalytic material to surface of the ultraviolet penetration unit
4 The purifier as defined in claim 1 , wherein the photocatalyst is a photocatalytic film using titanium dioxide as main catalyst
5 A purifier using a photocatalytic LED for decomposing and sterilizing residual organic materials in a storage or in purifying process
PCT/KR2001/000302 2000-02-28 2001-02-28 Photocatalytic led purifier WO2001064318A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001237753A AU2001237753A1 (en) 2000-02-28 2001-02-28 Photocatalytic led purifier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020000009830A KR100355667B1 (en) 2000-02-28 2000-02-28 photocatalytic purifier for LED
KR2000/9830 2000-02-28

Publications (1)

Publication Number Publication Date
WO2001064318A1 true WO2001064318A1 (en) 2001-09-07

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KR (1) KR100355667B1 (en)
AU (1) AU2001237753A1 (en)
WO (1) WO2001064318A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053829A2 (en) 2003-11-26 2005-06-16 Carrier Corporation Solid state ultraviolet photocatalytic oxidation system
WO2009144764A2 (en) * 2008-05-29 2009-12-03 Universita' Degli Studi Di Salerno Photocatalytic fluidized bed reactor with high illumination efficiency for photocatalytic oxidation processes
WO2010142004A2 (en) 2009-06-10 2010-12-16 Katholieke Universifeit Leuven Controlled biosecure aquatic farming system in a confined environment
ITUA20162473A1 (en) * 2016-04-11 2017-10-11 Noka S R L SYSTEM FOR ILLUMINATING ENVIRONMENTS AND PURIFYING THEIR AIR WITH PHOTOCATALYSIS
CN108905611A (en) * 2018-08-02 2018-11-30 成都四维福腾环保设备有限公司 A kind of device and method removing VOC
CN109794155A (en) * 2019-03-22 2019-05-24 浙江大学苏州工业技术研究院 The method for handling VOCs and foul gas
CN110425677A (en) * 2019-08-06 2019-11-08 河南工业大学 A kind of photocatalysis air purifying device of livestock and poultry cultivation greenhouse
CN113648948A (en) * 2021-08-31 2021-11-16 泊菲莱(镇江)智能设备有限公司 A high-efficient compact photocatalytic reaction device for catalyst detects

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KR100598320B1 (en) * 2004-11-09 2006-07-10 동양매직 주식회사 Photocatalysts filter module and air cleaner mounted the same

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JPH11165038A (en) * 1997-12-03 1999-06-22 Sanyo Electric Co Ltd Ethylene removing device provided with palladium catalyst and photocatalyst
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053829A2 (en) 2003-11-26 2005-06-16 Carrier Corporation Solid state ultraviolet photocatalytic oxidation system
EP1687081A2 (en) * 2003-11-26 2006-08-09 Carrier Corporation Solid state ultraviolet photocatalytic oxidation system
EP1687081A4 (en) * 2003-11-26 2009-01-28 Carrier Corp Solid state ultraviolet photocatalytic oxidation system
WO2009144764A2 (en) * 2008-05-29 2009-12-03 Universita' Degli Studi Di Salerno Photocatalytic fluidized bed reactor with high illumination efficiency for photocatalytic oxidation processes
WO2009144764A3 (en) * 2008-05-29 2010-05-06 Universita' Degli Studi Di Salerno Photocatalytic fluidized bed reactor with high illumination efficiency for photocatalytic oxidation processes
WO2010142004A2 (en) 2009-06-10 2010-12-16 Katholieke Universifeit Leuven Controlled biosecure aquatic farming system in a confined environment
ITUA20162473A1 (en) * 2016-04-11 2017-10-11 Noka S R L SYSTEM FOR ILLUMINATING ENVIRONMENTS AND PURIFYING THEIR AIR WITH PHOTOCATALYSIS
WO2017178953A1 (en) * 2016-04-11 2017-10-19 Noka S.R.L. System for illuminating spaces and purifying air therein by photocatalysis
CN108905611A (en) * 2018-08-02 2018-11-30 成都四维福腾环保设备有限公司 A kind of device and method removing VOC
CN109794155A (en) * 2019-03-22 2019-05-24 浙江大学苏州工业技术研究院 The method for handling VOCs and foul gas
CN110425677A (en) * 2019-08-06 2019-11-08 河南工业大学 A kind of photocatalysis air purifying device of livestock and poultry cultivation greenhouse
CN113648948A (en) * 2021-08-31 2021-11-16 泊菲莱(镇江)智能设备有限公司 A high-efficient compact photocatalytic reaction device for catalyst detects

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