CN111359428A - Indoor air purification device - Google Patents
Indoor air purification device Download PDFInfo
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- CN111359428A CN111359428A CN202010109779.6A CN202010109779A CN111359428A CN 111359428 A CN111359428 A CN 111359428A CN 202010109779 A CN202010109779 A CN 202010109779A CN 111359428 A CN111359428 A CN 111359428A
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- 238000004887 air purification Methods 0.000 title claims abstract description 19
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000001699 photocatalysis Effects 0.000 claims abstract description 23
- 239000011941 photocatalyst Substances 0.000 claims abstract description 19
- 238000007146 photocatalysis Methods 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000003197 catalytic effect Effects 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 17
- 231100000719 pollutant Toxicity 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 239000002041 carbon nanotube Substances 0.000 claims description 11
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- -1 automobile exhaust Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000000752 ionisation method Methods 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
- B01D53/323—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 by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- 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
- 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
- B01D2255/70—Non-metallic catalysts, additives or dopants
- B01D2255/702—Carbon
-
- 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
-
- 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
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Catalysts (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
An indoor air purification device mainly comprises a fan, a filter device, a low-temperature plasma device and a photocatalysis device; air to be purified is sucked into the device from the air inlet through the fan, passes through the filtering device, is removed of suspended particles in the air, and then enters the low-temperature plasma device; in this device, most of the contaminants are purified in the device, while a large amount of the very oxidizing O3 is produced; in the photocatalysis device, under the irradiation of a light source, the photocatalyst can utilize the energy of the light source with specific wavelength to generate catalytic oxidation, so that the residual formaldehyde in the air is completely catalytically oxidized; the purified air is discharged from the air outlet. The invention adopts the low-temperature plasma and photocatalysis combined technology, and the coupling reaction can promote the exertion of the two purification technologies, thereby playing a comprehensive purification effect which cannot be achieved by a simple step-by-step combination mode and simultaneously improving the energy utilization rate.
Description
Technical Field
The invention relates to the field of air purification, in particular to an indoor air purification device.
Background
The life of human beings can not be kept away from the air, and the quality of the air directly determines the life quality and the life of human beings. The frequent appearance of haze weather and the release of toxic and harmful gases from interior decoration materials make people fear the air breathed at every moment.
Formaldehyde is a colorless, extremely volatile and irritant odor organic pollutant, has high toxicity, and is determined as carcinogenic and teratogenic substances by the world health organization, so that formaldehyde is the second place on the priority control list of toxic chemicals in China. Therefore, the indoor formaldehyde content is strictly regulated in China, the national standard of indoor air quality Standard (GB/T18883-2002) clearly specifies that the maximum allowable concentration of formaldehyde in the air of various urban and rural residences is 0.10mg/m 3. The formaldehyde in the air is remained for a long time in new vehicles which are newly decorated or decorated for a plurality of residences or new vehicles, and the formaldehyde concentration is higher, thus seriously harming the health of human bodies. In addition, people tend to finish and luxury finish the living rooms and new vehicles at present, and the quality of the furniture boards and the decoration materials is uneven at present, so that the indoor formaldehyde pollution condition is particularly serious.
At present, two main methods are used for treating indoor air pollution: firstly, window opening ventilation and secondly, the use of an air purifier. However, haze weather frequently occurs, and industrial waste gas, automobile exhaust, dust raising and the like block the way of window opening ventilation. Therefore, the development of an economical, efficient and reasonable multifunctional indoor air purification device is the trend of the present situation.
Plasma is a substance form mainly composed of free electrons and charged ions, widely existing in the universe, and also the substance form with the highest proportion in the universe, and is often regarded as the fourth state of the substance, called plasma state, or "super-gas state", also called "plasma body". The water molecules and gas molecules in the air are ionized through a strong ionization field and gas discharge generated by a low-temperature plasma generator, and through a series of complex excitation, dissociation and ionization processes, active groups with extremely active chemical properties are generated and undergo a series of complex redox reactions with pollutants in the air, wherein volatile organic molecules are decomposed, so that the aim of air purification is fulfilled.
The photocatalytic air purification is a technology utilizing novel composite nano high-tech functional materials, and is a low-temperature deep reaction technology, photocatalytic nano particles are excited under the irradiation of light with a certain wavelength to produce electron-hole pairs, water adsorbed on the surface of a hole decomposition catalyst generates hydroxyl radicals, and electrons reduce oxygen around the electrons into active ion oxygen, so that the photocatalytic air purification has extremely strong oxidation-reduction effect, and various pollutants on the surface of the photocatalyst are destroyed and bacteria and viruses are killed.
Disclosure of Invention
In order to overcome the limitation and the defect of the existing air purification device, the invention provides an indoor air purification device, which is coupled with a novel technical means of low-temperature plasma and nano-carbon photocatalysis, can accurately and efficiently remove indoor formaldehyde harmful gas, and greatly improves the treatment effect and the treatment capacity of formaldehyde.
The technical scheme adopted by the invention for realizing the above purposes is as follows: an indoor air purification device mainly comprises a fan, a filter device, a low-temperature plasma device and a photocatalysis device; air to be purified is sucked into the device from the air inlet through the fan, passes through the filtering device, is removed of suspended particles in the air, and then enters the low-temperature plasma device; in the device, electrons obtain energy from an electric field in the discharge process, the energy is converted into internal energy or kinetic energy of pollutant molecules through inelastic collision, the molecules obtaining the energy are excited or ionized to form active groups, when the energy obtained by the pollutant molecules is larger than the binding energy of the molecular bond energy of the pollutant molecules, the molecular bonds of the pollutant molecules are broken and directly decomposed into simple substance molecules or harmless gas molecules consisting of single atoms, most pollutants are purified in the device, and meanwhile, a large amount of O3 with strong oxidizing property is generated; in the photocatalysis device, under the irradiation of a light source, the photocatalyst can utilize the energy of the light source with specific wavelength to generate catalytic oxidation, so that the residual formaldehyde in the air is completely catalytically oxidized; the purified air is discharged from the air outlet.
Furthermore, a filter screen is arranged in the filter device; the low-temperature plasma device comprises a high-voltage power supply and a plasma ionization field; the photocatalysis device is internally provided with an ultraviolet lamp tube and a photocatalyst, and the inner side of the photocatalysis device is pasted with an aluminum foil reflecting layer which can reflect light emitted by the ultraviolet lamp tube so as to achieve full utilization.
Furthermore, the plasma ionization field part has various structures such as a plate-to-plate type structure, a wire-to-plate type structure, a plate-to-plate type structure, a wire-to-barrel type structure and the like;
further, the photocatalyst is a porous nano carbon net which takes a doped carbon nanotube as a carrier and a loaded transition metal oxide as an active component;
further, the doped carbon nanotube is a nitrogen-doped or phosphorus-doped carbon nanotube;
further, the transition metal oxide is TiO 2;
further, in the photocatalytic device, the photocatalyst is distributed in a grid shape.
The invention has the beneficial effects that:
1. by adopting the low-temperature plasma and photocatalysis combined technology, the coupling reaction can promote the exertion of the two purification technologies, so that the comprehensive purification effect which cannot be achieved by a simple step-by-step combination mode can be achieved, and the energy utilization rate can be improved;
2. the photocatalyst is a porous nano carbon net, doped carbon nano tubes are used as carriers, and doping sites introduced on the surface of carbon can effectively modulate the surface activity of the carbon nano tubes, so that the uniformity of catalyst loading is improved, and the catalytic activity of the catalyst is improved.
3. In the photocatalysis device, the photocatalyst is distributed in a grid shape, and the adsorption performance of the nano carbon material can be utilized to the maximum extent to adsorb formaldehyde to the surface of the photocatalyst, so that the accurate and efficient purification is achieved, and the purification efficiency is improved.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention.
In the figure, 1, a fan; 2. a filtration device; 3. a low temperature plasma device; 4. a photocatalytic device; 5. an air inlet; 6. a filter screen; 7. a high voltage power supply; 8. a plasma ionization field; 9. a photocatalyst; 10. an ultraviolet lamp tube; 11. and (7) air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and do not limit the present invention.
The invention provides an indoor air purification device, as shown in figure 1, mainly comprising a fan 1, a filter device 2, a low-temperature plasma device 3 and a photocatalysis device 4; air to be purified is sucked into the device from an air inlet 5 through a fan 1, passes through a filtering device 2 to remove suspended particles in the air, and then enters a low-temperature plasma device 3; in the device, electrons obtain energy from an electric field in the discharge process, the energy is converted into internal energy or kinetic energy of pollutant molecules through inelastic collision, the molecules obtaining the energy are excited or ionized to form active groups, when the energy obtained by the pollutant molecules is larger than the binding energy of the molecular bond energy of the pollutant molecules, the molecular bonds of the pollutant molecules are broken and directly decomposed into simple substance molecules or harmless gas molecules consisting of single atoms, most pollutants are purified in the device, and meanwhile, a large amount of O3 with strong oxidizing property is generated; in the photocatalytic device 4, under the irradiation of a light source, the photocatalyst 9 can utilize the energy of the light source with a specific wavelength to generate catalytic oxidation, so that the residual formaldehyde in the air is completely catalytically oxidized; the purified air is discharged from the air outlet 11; a filter screen 6 is arranged in the filter device 2; the low-temperature plasma device 3 comprises a high-voltage power supply 7 and a plasma ionization field 8; the photocatalysis device 4 is internally provided with an ultraviolet lamp tube 10 and a photocatalyst 9, and the inner side of the photocatalysis device is adhered with an aluminum foil reflecting layer which can reflect light emitted by the ultraviolet lamp tube 10 so as to achieve full utilization; the plasma ionization field 8 part has various structures such as plate-to-plate type, wire-to-plate type, plate-to-plate type, wire-to-barrel type and the like; the photocatalyst 9 is a porous nano carbon net which takes a doped carbon nano tube as a carrier and loads a transition metal oxide as an active component; the doped carbon nanotube is a nitrogen-doped or phosphorus-doped carbon nanotube; the transition metal oxide is TiO 2; in the photocatalytic device 4, the photocatalyst 9 is distributed in a grid shape.
The above-mentioned embodiments, which are intended to be illustrative only and not to limit the scope of the invention, are intended to be encompassed within the spirit and principle of the present invention, as defined by the appended claims and their equivalents.
Claims (8)
1. An indoor air purification device is characterized by comprising a fan 1, a filtering device 2, a low-temperature plasma device 3 and a photocatalysis device 4; air to be purified is sucked into the device from an air inlet 5 through a fan 1, passes through a filtering device 2 to remove suspended particles in the air, and then enters a low-temperature plasma device 3; in the device, electrons obtain energy from an electric field in the discharge process, the energy is converted into internal energy or kinetic energy of pollutant molecules through inelastic collision, the molecules obtaining the energy are excited or ionized to form active groups, when the energy obtained by the pollutant molecules is larger than the binding energy of the molecular bond energy of the pollutant molecules, the molecular bonds of the pollutant molecules are broken and directly decomposed into simple substance molecules or harmless gas molecules consisting of single atoms, most pollutants are purified in the device, and meanwhile, a large amount of O3 with strong oxidizing property is generated; in the photocatalytic device 4, under the irradiation of a light source, the photocatalyst 9 can utilize the energy of the light source with a specific wavelength to generate catalytic oxidation, so that the residual formaldehyde in the air is completely catalytically oxidized; the purified air is discharged from the air outlet 11.
2. An indoor air-purifying device as claimed in claim 1, wherein said filter unit 2 is provided with a filter screen 6.
3. An indoor air purification apparatus as claimed in claim 1, wherein said low temperature plasma device 3 comprises a high voltage power supply 7 and a plasma ionization field 8.
4. An indoor air purification device as claimed in claim 3, wherein the plasma ionization field 8 is formed by a plurality of structures such as plate-to-plate type, wire-to-plate type, plate-to-plate type and wire-to-barrel type.
5. An indoor air purification device as claimed in claim 1, wherein the photocatalysis device 4 is provided with an ultraviolet lamp tube 10 and a photocatalyst 9, and an aluminum foil reflection layer is adhered on the inner side.
6. An indoor air purification device as claimed in claim 5, wherein the photocatalyst 9 is a porous carbon nano-net which uses doped carbon nanotubes as a carrier and supports transition metal oxide as an active component.
7. An indoor air purification device as claimed in claim 6, wherein said doped carbon nanotubes are nitrogen doped or phosphorus doped carbon nanotubes, and said transition metal oxide is TiO 2.
8. A device for purifying indoor air as claimed in claim 7, wherein the photocatalyst 9 is disposed in a lattice shape in the photocatalyst unit 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109779.6A CN111359428A (en) | 2020-02-22 | 2020-02-22 | Indoor air purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109779.6A CN111359428A (en) | 2020-02-22 | 2020-02-22 | Indoor air purification device |
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| Publication Number | Publication Date |
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| CN111359428A true CN111359428A (en) | 2020-07-03 |
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|---|---|---|---|
| CN202010109779.6A Pending CN111359428A (en) | 2020-02-22 | 2020-02-22 | Indoor air purification device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009249206A (en) * | 2008-04-02 | 2009-10-29 | Daicel Chem Ind Ltd | Titanium oxide particle surface-modified by carbon nanotube whose tip is carried with metallic element |
| CN102679454A (en) * | 2012-05-23 | 2012-09-19 | 北京华温科科技有限公司 | Indoor air purifying device |
| CN103170324A (en) * | 2011-12-23 | 2013-06-26 | 上海杉杉科技有限公司 | Metallic oxide/N-doped carbon nano tube as well as preparation method and application thereof |
| CN205412680U (en) * | 2016-04-01 | 2016-08-03 | 重庆大学 | Air cleaning device |
-
2020
- 2020-02-22 CN CN202010109779.6A patent/CN111359428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009249206A (en) * | 2008-04-02 | 2009-10-29 | Daicel Chem Ind Ltd | Titanium oxide particle surface-modified by carbon nanotube whose tip is carried with metallic element |
| CN103170324A (en) * | 2011-12-23 | 2013-06-26 | 上海杉杉科技有限公司 | Metallic oxide/N-doped carbon nano tube as well as preparation method and application thereof |
| CN102679454A (en) * | 2012-05-23 | 2012-09-19 | 北京华温科科技有限公司 | Indoor air purifying device |
| CN205412680U (en) * | 2016-04-01 | 2016-08-03 | 重庆大学 | Air cleaning device |
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