KR100291604B1 - How to Fix Titanium Dioxide Used as Air Freshener in Glass Tubes - Google Patents
How to Fix Titanium Dioxide Used as Air Freshener in Glass Tubes Download PDFInfo
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- KR100291604B1 KR100291604B1 KR1019980028087A KR19980028087A KR100291604B1 KR 100291604 B1 KR100291604 B1 KR 100291604B1 KR 1019980028087 A KR1019980028087 A KR 1019980028087A KR 19980028087 A KR19980028087 A KR 19980028087A KR 100291604 B1 KR100291604 B1 KR 100291604B1
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- glass tube
- titanium dioxide
- concentration
- ppm
- air
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 27
- 239000002386 air freshener Substances 0.000 title claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 49
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 33
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 abstract description 7
- 239000011259 mixed solution Substances 0.000 abstract description 6
- 238000013032 photocatalytic reaction Methods 0.000 abstract description 6
- 230000001678 irradiating effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 21
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 16
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 14
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000243 solution Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- 229910008051 Si-OH Inorganic materials 0.000 description 2
- 229910006358 Si—OH Inorganic materials 0.000 description 2
- 229910003089 Ti–OH Inorganic materials 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 238000012643 polycondensation polymerization Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 238000004577 artificial photosynthesis Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000004045 organic chlorine compounds Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- ZFRKQXVRDFCRJG-UHFFFAOYSA-N skatole Natural products C1=CC=C2C(C)=CNC2=C1 ZFRKQXVRDFCRJG-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- 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
-
- 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
-
- B01J35/39—
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/04—Mixing
-
- 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
Abstract
본 발명은 공기중의 오염 물질을 제거하기 위해 공기 청정제로 사용되는 이산화티타늄을 유리관에 고정시키는 방법을 제공하기 위한 것이다.The present invention provides a method of fixing titanium dioxide to a glass tube used as an air freshener to remove contaminants in the air.
즉, 본 발명은 유리관의 표면에 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜의 혼합 용액을 분사시켜서, 공기 청정제로 사용되는 이산화티타늄을 유리관에 고정시키는 방법인 것이다.That is, this invention is a method of fixing titanium dioxide used as an air freshener to a glass tube by spraying the mixed solution of titanium tetraisopropoxide and isopropyl alcohol on the surface of a glass tube.
이와 같은 방법에 의해 이산화티타늄을 유리관에 고정시킨 경우, 자외선을 조사하여 발생하는 광촉매 반응에 의해 공기중의 오염 물질을 제거할 수 있다.When titanium dioxide is fixed to the glass tube by such a method, contaminants in the air can be removed by a photocatalytic reaction generated by irradiating ultraviolet rays.
Description
본 발명은 공기 청정제로 사용되는 이산화티타늄을 고정시키는 방법에 관한 것이다. 더욱 상세하게는, 공기중의 오염 물질을 광촉매 반응에 의해 제거하기 위해 이산화티타늄을 유리관에 고정시키는 방법에 관한 것이다.The present invention relates to a method for fixing titanium dioxide used as an air freshener. More particularly, the present invention relates to a method of fixing titanium dioxide to a glass tube in order to remove contaminants in the air by a photocatalytic reaction.
현재 날로 심각해져가는 대기 오염 문제중, 인간의 생활, 특히 건강과 밀접한 관계를 가지고 있는 저 농도의 실내공기 오염의 문제는 지금까지 소홀히 다루어져왔고, 발생원에서의 처리 대책이 수립되어 있지 않은 상태에서 실내 생활자에게 육체적, 정신적 피해가 우려된다. 일반적인 대기 환경중 유기 오염물, 악취 및 세균에 대한 피해의 정도는 명확히 밝혀진 바 없으나, 최근 실내 공기 청정기, 청정제 및 살균제의 소비가 늘어나고 있는 추세이다.Among the problems of air pollution, which are becoming more serious today, the problem of low concentration of indoor air pollution, which is closely related to human life, especially health, has been neglected until now, and indoors have not been established. There is concern about physical and mental damage to the living person. The degree of damage to organic pollutants, odors and bacteria in the general air environment has not been clearly identified, but the consumption of indoor air cleaners, detergents and fungicides has recently increased.
그러나, 이들 약품의 사용이 실내 공기중의 미량 유기 오염 물질, 악취 및 세균 등을 완벽하게 처리할 수 있는 것은 아니고 처리 기기의 설치와 설치 장소 및 비용 등의 측면에서도 바람직한 것은 아니다.However, the use of these chemicals is not able to completely deal with trace organic contaminants, odors and bacteria in the indoor air, and is not preferable in terms of installation, installation location and cost of processing equipment.
광촉매 작용을 지니는 반도체 금속 산화물에는 여러 가지 것이 있으나, 1)대기중 상온에서의 강한 산화력, 2)화학적 안정성 및 3)무해, 무독성의 관점에서 가장 널리 사용되는 것이 이산화티타늄이다. 이산화티타늄은 3eV의 띠 간격(bandgab)을 지니는 반도체로, 이 에너지에 상당하는 400nm이하의 자외선 광을 받아 전자여기가 생기기 때문에 물의 광분해, 인공 광합성, 수처리 및 유기 염소 화합물의 분해 등 각종 산화·환원반응의 촉매로서 주목받고 있다.There are many kinds of semiconductor metal oxides having a photocatalytic action, but titanium dioxide is most widely used in view of 1) strong oxidizing power at ambient temperature, 2) chemical stability, and 3) harmless and non-toxic. Titanium dioxide is a semiconductor with a bandgap of 3 eV. Since it receives an ultraviolet light of 400 nm or less corresponding to this energy, electron excitation occurs, various oxidation and reduction such as photolysis of water, artificial photosynthesis, water treatment and decomposition of organic chlorine compounds are performed. It is attracting attention as a catalyst of the reaction.
가정과 사무실에서 발생하는 악취는 질소화합물(암모니아, 아민류, 인돌류 및 스카톨 등), 황화합물(황화수소, 메틸머캡탄, 황화메틸 및 이황화메틸 등), 지방산 및 방향족 화합물 등의 매우 다양한 성분으로 이루어진다. 실내 작업장, 실험실 환경 및 일반 가정의 실내 공기에서 문제되는 것은 ㎖/ℓ 및 ㎍/ℓ 이하의 오염 물질이다.Odors that occur in homes and offices consist of a wide variety of components, including nitrogen compounds (such as ammonia, amines, indole and scatol), sulfur compounds (such as hydrogen sulfide, methylmercaptan, methyl sulfide and methyl disulfide), fatty acids and aromatic compounds. Problems in indoor air in indoor workplaces, laboratory environments, and general households are contaminants up to ml / l and μg / l.
따라서, 자외선 광량도 그만큼 강하지 않아도 된다. 게다가 대량의 공기를 낮은 비용으로 처리하는 조건을 만족시키는 것이 바람직하다. 그러나, 이산화티타늄 광촉매 반도체는 입자 크기가 매우 작은 분말 형태로 존재하기 때문에 공기 흐름시 공기 중에 분산되어 입자상 대기 오염 물질로 작용할 뿐 아니라, 충전시 비산되기 때문에 이를 고정화시키는 것이 실내 공기 오염 물질의 처리시 선결되어야 할 과제이다.Therefore, the amount of ultraviolet light does not have to be as strong as that. Furthermore, it is desirable to satisfy the conditions for treating a large amount of air at low cost. However, since titanium dioxide photocatalytic semiconductors exist in the form of powders with very small particle sizes, they are dispersed in the air during air flow and act as particulate air pollutants. It is a task to be taken first.
이와 같은 문제를 해결하기 위해 본 발명자들은 예의 연구를 거듭한 결과, 유리관의 표면위에 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜의 혼합 용액을 분사하여, 공기 청정제로 사용되는 이산화티타늄을 유리관에 고정시킬 경우 자외선을 조사하여 발생하는 광촉매 반응에 의해 공기중의 오염 물질을 쉽게 제거할 수 있음을 알게 되었다.In order to solve such a problem, the present inventors earnestly studied, and sprayed a mixed solution of titanium tetraisopropoxide and isopropyl alcohol on the surface of the glass tube to fix the titanium dioxide used as an air freshener to the glass tube. In this case, it was found that contaminants in the air can be easily removed by the photocatalytic reaction generated by ultraviolet irradiation.
본 발명은 유리관의 내부 표면을 이소프로필알콜과 물을 6 : 1 내지 8 : 1의 부피비로 혼합한 용액으로 유리관의 내부가 균일하게 젖을 수 있도록 딥 코팅법(dip coating)으로 적신 후, 온도를 -10。 내지 -30。Ｃ로 낮추고, 상기 유리관을 10 내지 30rpm의 속도로 축 방향으로 회전시키면서 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜을 1 : 1의 부피비로 혼합한 용액을 상기 유리관의 중앙을 통해서 분사시켜서 되는 공기 청정제로 사용되는 이산화티타늄을 유리관에 고정시키는 방법임을 특징으로 한다.The present invention is a solution of isopropyl alcohol and water in a volume ratio of 6: 1 to 8: 1 by mixing the inner surface of the glass tube with a dip coating so as to uniformly wet the inside of the glass tube, and then the temperature is reduced. Lower the temperature from -10 ° to -30 ° C and rotate the glass tube in the axial direction at a speed of 10 to 30 rpm while mixing a solution containing titanium tetraisopropoxide and isopropyl alcohol in a volume ratio of 1: 1 in the center of the glass tube. It is characterized in that the method of fixing the titanium dioxide used as an air freshener to be sprayed through the glass tube.
본 발명에서는 석영으로 이루어진 유리관의 내부 표면에다 이소프로필알콜과 물을 6 : 1 내지 8 : 1의 부피비로 혼합한 용액으로 유리관의 내부가 균일하게 젖을 수 있도록 딥 코팅법으로 적신 다음에 온도를 -10。 내지 -30。Ｃ로 낮춘다.In the present invention, a solution in which isopropyl alcohol and water are mixed at a volume ratio of 6: 1 to 8: 1 on the inner surface of a glass tube made of quartz, and wetted by a dip coating method to uniformly wet the inside of the glass tube. Lower to 10 ° to -30 ° C.
상기와 같은 방법에 의해 유리관의 내부 표면이 상기 혼합 용액에 의해 완전히 젖을 만큼 적셔졌을 때, 상기 유리관을 10 내지 30rpm의 속도로 축 방향으로 회전시키면서 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜을 0.5 : 1 내지 2 : 1의 부피비로 혼합된 용액을 상기 유리관의 중앙을 통해서 유리관 표면에 용액이 균일하게 젖을 수 있는 속도로 분사를 시킨 후 유리관을 소성시킴으로써, 상기 유리관의 내부에 이산화티타늄이 고정되게 된다.When the inner surface of the glass tube is completely wetted by the mixed solution by the above method, the titanium tetraisopropoxide and isopropyl alcohol are 0.5: while rotating the glass tube in the axial direction at a speed of 10 to 30 rpm. Titanium dioxide is fixed to the inside of the glass tube by firing the glass tube after spraying the mixed solution at a volume ratio of 1 to 2: 1 through the center of the glass tube at a speed that the solution can be uniformly wetted. .
상기에서 사용되는 유리관은 자외선에 대한 투과율이 뛰어나므로, 고정된 이산화티타늄의 광촉매 작용의 효율을 향상시킬 수 있어서, 결과적으로 공기중의 오염 물질을 효과적으로 제거할 수 있는 장점을 갖는다.Since the glass tube used in the above has excellent transmittance to ultraviolet rays, it is possible to improve the efficiency of the photocatalytic action of the fixed titanium dioxide, resulting in the effective removal of contaminants in the air.
상기에 의한 고정화 방법은 솔-젤 법을 응용한 것으로써, 상기 솔-젤 반응은 전조(precursor)의 가수 분해에 이은 3차원적 구조를 형성하는 축중합으로 이루어진다. 상기 가수 분해 및 축중합에 의한 솔-젤 반응은 다음과 같은 매카니즘에 의한다.The immobilization method according to the above is the application of the sol-gel method, and the sol-gel reaction consists of a condensation polymerization forming a three-dimensional structure following hydrolysis of a precursor. The sol-gel reaction by the hydrolysis and condensation polymerization is based on the following mechanism.
가수분해 :
축 중 합 :
이하 본 발명을 실시 예에 의해 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail by way of examples.
[실시예]EXAMPLE
광촉매 반응 실험Photocatalytic Reaction Experiment
본 실험에 사용된 자외선 램프는 15와트(Watt) 중압 수은 램프로서 최대 발광 파장은 254nm이다. 실험은 가로 50cm, 세로 50cm 및 높이 30cm의 알루미늄으로 제작된 방(반응실)에서 수행하였으며, 스텐레스강으로 제작된 지지대 위에 이산화티타늄을 고정시킨( 또는 이산화티타늄이 존재하지 않음) 유리관을 설치하고 광원으로부터의 수직거리가 15cm가 되도록 하였다.The UV lamp used in this experiment was a 15-watt medium pressure mercury lamp with a maximum emission wavelength of 254 nm. The experiment was carried out in a room made of aluminum 50 cm wide, 50 cm long and 30 cm high (reaction chamber), with a glass tube fixed with titanium dioxide (or no titanium dioxide) on a support made of stainless steel, and equipped with a light source. The vertical distance from was set to 15 cm.
실시예 1Example 1
석영으로 이루어진 유리관의 표면 위에 부피비 7:1로 혼합한 이소프로필알콜과 물의 혼합 용액을 상기 유리관의 내부가 균일하게 젖을 수 있도록 적신 후, 온도를 -20。Ｃ로 낮추어 유지시켰다. 상기 유리관을 20rpm의 속도로 축 방향으로 회전시키면서 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜 용액을 1:1의 부피비로 혼합하여 제조한 혼합액을 유리관의 중앙을 통해 유리관 표면에 용액이 균일하게 젖을 수 있는 속도로 분사시켰다.After mixing the solution of isopropyl alcohol and water mixed in a volume ratio of 7: 1 on the surface of the glass tube made of quartz so that the inside of the glass tube was uniformly wetted, the temperature was kept at -20 ° C. While rotating the glass tube in an axial direction at a speed of 20 rpm, the mixed solution prepared by mixing titanium tetraisopropoxide and isopropyl alcohol solution in a volume ratio of 1: 1 can be uniformly wetted on the surface of the glass tube through the center of the glass tube. Sprayed at a speed that is.
상기 티타늄 테트라이소프로퍼옥시드와 이소프로필알콜의 혼합 용액을 분사시키는 분사기의 직경은 0.01mm이였으며, 분사후 유리관을 회전시키면서 온도를 20。Ｃ로 상승시켰고, 상기 온도에서 24시간동안 유지시킨 후, 250。Ｃ가 될 때까지 1。Ｃ/분의 속도로 온도를 상승시켰다. 상기 온도에서 다시 6시간 동안 유지시켰다.The diameter of the injector for injecting the mixed solution of titanium tetraisopropoxide and isopropyl alcohol was 0.01mm, and after spraying the temperature was raised to 20 ° C while rotating the glass tube, and maintained at the temperature for 24 hours The temperature was raised at a rate of 1 ° C / min until the temperature reached 250 ° C. It was kept at this temperature again for 6 hours.
상기의 과정을 3회 반복하고, 마지막으로 유리관의 온도를 500。Ｃ로 1。Ｃ/분의 속도로 상승시킨 후, 상기 온도에서 24시간동안 유지시켜 이산화티타늄을 유리관에 고정시켰다.The above procedure was repeated three times, and finally, the temperature of the glass tube was raised to 500 ° C. at a rate of 1 ° C./minute, and maintained at this temperature for 24 hours to fix titanium dioxide in the glass tube.
상기와 같이 제조된 이산화티타늄이 고정된 유리관을 반응실에 설치했고, 반응실에 982ppm의 황화수소(나머지 기체는 공기)를 채운 후, 상기 기재한 광촉매 반응 실험 조건에서 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 황화수소의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 황화수소의 농도는 679ppm이었다. 이후 24시간이 경과한 후에 황화수소의 농도는 281ppm으로 감소하였다.Titanium dioxide-fixed glass tube prepared as described above was installed in the reaction chamber, and 982 ppm hydrogen sulfide (the remaining gas was air) was filled in the reaction chamber, and then light was irradiated with an ultraviolet lamp under the photocatalytic reaction test conditions described above. It was. After irradiation with light, the concentration of hydrogen sulfide began to decrease slowly, and after 1 hour, the concentration of hydrogen sulfide was 679 ppm. After 24 hours, the concentration of hydrogen sulfide decreased to 281 ppm.
실시예 2Example 2
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 53ppm의 포름알데히드를 주입한 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 포름알데히드의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 포름알데히드의 농도는 23.7ppm이었다. 이후 24시간이 경과한 후에 포름알데히드의 농도는 2.14ppm으로 감소하였다.In the same manner as in Example 1, instead of hydrogen sulfide, 53 ppm of formaldehyde was injected into the reaction chamber and then irradiated with an ultraviolet lamp. After irradiation with light, the concentration of formaldehyde began to decrease slowly. After one hour, the concentration of formaldehyde was 23.7 ppm. After 24 hours, the concentration of formaldehyde was reduced to 2.14 ppm.
실시예 3Example 3
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 498ppm의 메틸머캡탄를 채운 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 메틸머캡탄의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 메틸머캡탄의 농도는 317ppm이었다. 이후 24시간이 경과한 후에 메틸머캡탄의 농도는 192ppm으로 감소하였다.In the same manner as in Example 1, 498ppm of methylmercaptan was filled in the reaction chamber instead of hydrogen sulfide, and then light was irradiated with an ultraviolet lamp. After irradiation with light, the concentration of methylmercaptan began to decrease slowly, and after 1 hour, the concentration of methylmercaptan was 317 ppm. After 24 hours, the concentration of methylmercaptan decreased to 192 ppm.
실시예 4Example 4
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 369ppm의 메틸아민을 채운 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 메틸아민의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 메틸아민의 농도는 301ppm이었다. 이후 24시간이 경과한 후에 메틸아민의 농도는 162ppm으로 감소하였다.In the same manner as in Example 1, instead of hydrogen sulfide, 369ppm of methylamine was charged in the reaction chamber and then irradiated with an ultraviolet lamp. After irradiation with light, the methylamine concentration began to slowly decrease, and after 1 hour, the methylamine concentration was 301 ppm. After 24 hours, the concentration of methylamine was reduced to 162 ppm.
실시예 5Example 5
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 54.2ppm의 메탄올(나머지 기체는 공기)을 채운 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 메탄올의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 메탄올의 농도는 30.3ppm이었다. 이후 24시간이 경과한 후에 메탄올의 농도는 10.1ppm으로 감소하였다.In the same manner as in Example 1, instead of hydrogen sulfide, the reaction chamber was filled with 54.2 ppm of methanol (the remaining gas was air) and then irradiated with an ultraviolet lamp. After irradiation with light, the concentration of methanol began to slowly decrease, and after 1 hour, the concentration of methanol was 30.3 ppm. After 24 hours, the concentration of methanol was reduced to 10.1 ppm.
실시예 6Example 6
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 148.2ppm의 아세톤을 채운 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 아세톤의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 아세톤의 농도는 98.5ppm이었다. 이후 24시간이 경과한 후에 아세톤의 농도는 19.1ppm으로 감소하였다.In the same manner as in Example 1, instead of hydrogen sulfide, 148.2 ppm of acetone was filled in the reaction chamber and then irradiated with an ultraviolet lamp. After irradiation with light, the acetone concentration began to decrease slowly. After 1 hour, the acetone concentration was 98.5 ppm. After 24 hours, the concentration of acetone was reduced to 19.1 ppm.
실시예 7Example 7
상기 실시예 1과 동일하게 하되, 황화수소 대신에 반응실에 14.8ppm의 벤젠을 채운 후 자외선 램프로 빛을 조사하기 시작하였다. 빛을 조사한 후 벤젠의 농도는 천천히 감소하기 시작하여 1시간이 경과한 후 벤젠의 농도는 9.7ppm이었다. 이후 24시간이 경과한 후에 벤젠의 농도는 2.6ppm으로 감소하였다.In the same manner as in Example 1, instead of hydrogen sulfide, 14.8ppm of benzene was charged in the reaction chamber and then irradiated with an ultraviolet lamp. After irradiation with light, the concentration of benzene began to slowly decrease, and after 1 hour, the concentration of benzene was 9.7 ppm. After 24 hours, the concentration of benzene was reduced to 2.6 ppm.
비교예 1Comparative Example 1
상기 실시예 1과 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 황화수소의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 황화수소의 농도는 971ppm이었다. 이후 24시간이 경과한 후에 황화수소의 농도는 914ppm으로 나타났다.In the same manner as in Example 1, but the experiment was carried out in the glass tube only does not contain titanium dioxide, the concentration of hydrogen sulfide almost did not decrease and after 1 hour the concentration of hydrogen sulfide was 971ppm. After 24 hours, the concentration of hydrogen sulfide was found to be 914ppm.
비교예 2Comparative Example 2
상기 실시예 2와 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 포름알데히드의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 포름알데히드의 농도는 47ppm이었다. 이후 24시간이 경과한 후에 포름알데히드의 농도는 42ppm으로 나타났다.In the same manner as in Example 2, the concentration of formaldehyde was almost reduced as a result of performing the experiment with a glass tube only without titanium dioxide, and the concentration of formaldehyde was 47 ppm after 1 hour. After 24 hours, the concentration of formaldehyde was 42 ppm.
비교예 3Comparative Example 3
상기 실시예 3과 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 메틸머캡탄의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 메틸머캡탄의 농도는 482ppm이었다. 이후 24시간이 경과한 후에 메틸머캡탄의 농도는 461ppm으로 나타났다.In the same manner as in Example 3, but the experiment was carried out in the glass tube only does not contain titanium dioxide, the concentration of methylmercaptan hardly decreased and after 1 hour the concentration of methylmercaptan was 482ppm. After 24 hours, the methylmercaptan concentration was 461 ppm.
비교예 4Comparative Example 4
상기 실시예 4와 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 메틸아민의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 메틸아민의 농도는 343ppm이었다. 이후 24시간이 경과한 후에 메틸아민의 농도는 313ppm으로 나타났다.In the same manner as in Example 4, but the experiment was performed with a glass tube containing only titanium dioxide, the concentration of methylamine was hardly reduced and after 1 hour the concentration of methylamine was 343ppm. After 24 hours, the methylamine concentration was found to be 313 ppm.
비교예 5Comparative Example 5
상기 실시예 5와 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 메탄올의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 메탄올의 농도는 52.1ppm이었다. 이후 24시간이 경과한 후에 메탄올의 농도는 48.3ppm으로 나타났다.As in Example 5, but the experiment was carried out with a glass tube only does not contain titanium dioxide, the concentration of methanol was hardly reduced and after 1 hour the concentration of methanol was 52.1ppm. After 24 hours, the concentration of methanol was 48.3 ppm.
비교예 6Comparative Example 6
상기 실시예 6과 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 아세톤의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 아세톤의 농도는 146.7ppm이었다. 이후 24시간이 경과한 후에 아세톤의 농도는 140.2ppm으로 나타났다.In the same manner as in Example 6, but the experiment was carried out in the glass tube only does not contain titanium dioxide, the concentration of acetone was hardly reduced and after one hour the concentration of acetone was 146.7ppm. After 24 hours, the acetone concentration was 140.2 ppm.
비교예 7Comparative Example 7
상기 실시예 1과 동일하게 하되, 단지 이산화티타늄이 존재하지 않는 유리관으로 실험을 수행한 결과 벤젠의 농도는 거의 감소하지 않았으며 1시간이 경과한 후 벤젠의 농도는 13.9ppm이었다. 이후 24시간이 경과한 후 벤젠의 농도는 12.8ppm으로 나타났다.In the same manner as in Example 1, but the experiment was carried out in the glass tube only does not contain titanium dioxide, the concentration of benzene almost did not decrease and after 1 hour the concentration of benzene was 13.9ppm. After 24 hours, the concentration of benzene was 12.8 ppm.
상기 실시예 및 비교예에서 알 수 있는 바와 같이 이산화티타늄을 유리관에 고정시킨 경우,As can be seen in the above examples and comparative examples, when titanium dioxide is fixed to the glass tube,
포름알데히드는 10%이하, 메탄올 및 아세톤은 20%이하, 메틸머캡탄은 40%이하 및 메틸아민은 50%이하만이 존재하게 되었다. 따라서, 상기 모든 물질에 대해 탈취 효과를 갖음을 알 수 있었다.Less than 10% formaldehyde, less than 20% methanol and acetone, less than 40% methylmercaptan and less than 50% methylamine. Therefore, it can be seen that it has a deodorizing effect on all the above materials.
상기 결과에서 보듯이 본 발명에 따른 이산화티타늄이 고정화된 유리관을 광촉매로 이용한 실시예의 경우와 이산화티타늄이 존재하지 않는 유리관을 광촉매로 이용한 비교예를 살펴보면, 이산화티타늄이 고정화된 유리관이 광촉매 반응에 의한 탈취에 적합하다는 것을 알 수 있다.As can be seen from the above results, in the case of the embodiment using the titanium dioxide-immobilized glass tube according to the present invention as a photocatalyst and the comparative example using the glass tube without titanium dioxide as a photocatalyst, the titanium dioxide-immobilized glass tube was subjected to the photocatalytic reaction. It can be seen that it is suitable for deodorization.
또한, 유리관에 고정화된 이산화티타늄은 다공성일 뿐 아니라, 쉽게 떨어져 나오지 않아 광촉매 교환없이 장기간 효율적으로 사용할 수 있다.In addition, the titanium dioxide immobilized on the glass tube is not only porous, but does not easily come off so that it can be efficiently used for a long time without photocatalytic exchange.
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| KR1019980028087A KR100291604B1 (en) | 1998-07-13 | 1998-07-13 | How to Fix Titanium Dioxide Used as Air Freshener in Glass Tubes |
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| KR20000008325A KR20000008325A (en) | 2000-02-07 |
| KR100291604B1 true KR100291604B1 (en) | 2001-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980028087A KR100291604B1 (en) | 1998-07-13 | 1998-07-13 | How to Fix Titanium Dioxide Used as Air Freshener in Glass Tubes |
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| KR (1) | KR100291604B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200001584U (en) | 2019-01-07 | 2020-07-15 | 김종완 | The air purification |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100482649B1 (en) * | 2002-04-25 | 2005-04-13 | 한국화학연구원 | Direct adhesion method of photocatalyst on substrate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829978A (en) * | 1994-07-14 | 1996-02-02 | Nippon Zeon Co Ltd | Positive type resist composition |
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1998
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0829978A (en) * | 1994-07-14 | 1996-02-02 | Nippon Zeon Co Ltd | Positive type resist composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200001584U (en) | 2019-01-07 | 2020-07-15 | 김종완 | The air purification |
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| KR20000008325A (en) | 2000-02-07 |
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