JP2002177792A - Photocatalyst for cleaning fluid and method of manufacturing the same - Google Patents
Photocatalyst for cleaning fluid and method of manufacturing the sameInfo
- Publication number
- JP2002177792A JP2002177792A JP2000382744A JP2000382744A JP2002177792A JP 2002177792 A JP2002177792 A JP 2002177792A JP 2000382744 A JP2000382744 A JP 2000382744A JP 2000382744 A JP2000382744 A JP 2000382744A JP 2002177792 A JP2002177792 A JP 2002177792A
- Authority
- JP
- Japan
- Prior art keywords
- photocatalyst
- titanium oxide
- oxide powder
- core
- coating layer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 47
- 239000012530 fluid Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000004140 cleaning Methods 0.000 title abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 37
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011247 coating layer Substances 0.000 claims abstract description 28
- 239000004922 lacquer Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 8
- 239000002023 wood Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 239000000123 paper Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 abstract description 2
- 238000004887 air purification Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水や空気などの流
体を浄化することに用いられる流体浄化用光触媒に関す
る。また、本発明は、上記流体浄化用光触媒の製造方法
に関する。The present invention relates to a photocatalyst for purifying a fluid used for purifying a fluid such as water or air. The present invention also relates to a method for producing the photocatalyst for fluid purification.
【０００２】[0002]
【従来の技術】特開２０００−３３２７２号公報に先行
例についての記載がある。この公報によって提案されて
いる流体浄化用光触媒（以下「光触媒」という）は次の
ようなものである。すなわち、熱可塑性材料を押出し成
形することにより得られた線条を不規則に曲がりくねら
せ、そのような多数本の曲がった線条同士を部分的に相
互に溶着させることによって不規則な形状の立体空間を
備えた円筒状、平板状、箱形状といった形の構造体と
し、その構造体を形成している線条の表面に接着剤を用
いて酸化チタン粉体を保持させてなる。2. Description of the Related Art Japanese Patent Application Laid-Open No. 2000-33272 discloses a prior example. The photocatalyst for fluid purification (hereinafter referred to as "photocatalyst") proposed by this publication is as follows. That is, the filaments obtained by extruding a thermoplastic material are irregularly meandered, and a large number of such curved filaments are partially welded to each other to form an irregular shape. A structure having a three-dimensional space, such as a cylindrical shape, a flat shape, or a box shape, is formed by holding a titanium oxide powder on the surface of a filament forming the structure using an adhesive.
【０００３】このように構造体を形成している線条の表
面に接着剤で酸化チタン粉体を保持させた光触媒は、酸
化チタン粉体と流体（液体や気体）との接触面積を広く
確保することができるために優れた浄化性能を発揮す
る。[0003] The photocatalyst in which the titanium oxide powder is held by the adhesive on the surface of the filament forming the structure as described above secures a wide contact area between the titanium oxide powder and a fluid (liquid or gas). It exhibits excellent purification performance.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、酸化チ
タン粉体は接着剤に接合しにくい性質を有しているた
め、先行例の光触媒では、経時によって酸化チタン粉体
が線条の表面から剥離して脱落しやすく、そのために、
場合によっては構造体に保持されている酸化チタン粉体
の量が次第に減少して光触媒による初期の浄化性能が短
期間で低下してしまうというおそれがあった。However, since the titanium oxide powder has such a property that it cannot be easily bonded to an adhesive, the titanium oxide powder peels off from the surface of the filament over time with the photocatalyst of the prior art. Easy to fall off,
In some cases, the amount of titanium oxide powder held in the structure gradually decreases, and the initial purification performance by the photocatalyst may decrease in a short period of time.
【０００５】本発明は以上の状況に鑑みてなされたもの
であり、酸化チタン粉体の剥離や脱落が生じにくくなっ
て初期の浄化性能を長期間に亘って維持させることので
きる流体浄化用光触媒を提供することを目的とする。The present invention has been made in view of the above circumstances, and a photocatalyst for purifying a fluid which can maintain the initial purification performance for a long period of time by preventing the titanium oxide powder from peeling or falling off. The purpose is to provide.
【０００６】また、本発明は、そのような流体浄化用光
触媒を製造する方法を提供することを目的とする。Another object of the present invention is to provide a method for producing such a fluid purification photocatalyst.
【０００７】[0007]
【課題を解決するための手段】本発明に係る流体浄化用
光触媒は、核の表面に塗布された漆液の塗布層に酸化チ
タン粉体が担持されている。この光触媒では、核に対し
ても酸化チタン粉体に対しても大きな接合力を発揮する
漆液の塗布層に酸化チタン粉体が担持されているので、
酸化チタン粉体が剥離したり脱落したりするおそれが少
なくなり、初期の浄化性能が長期間に亘って発揮される
ようになる。In the photocatalyst for fluid purification according to the present invention, a titanium oxide powder is carried on a coating layer of a lacquer solution applied to the surface of a core. In this photocatalyst, the titanium oxide powder is carried on the coating layer of the lacquer liquid that exhibits a large bonding force both to the core and to the titanium oxide powder.
The risk of the titanium oxide powder peeling or falling off is reduced, and the initial purification performance is exhibited over a long period of time.
【０００８】上記核には、木、紙、金属、ガラス、布な
どの素材を好適に用い得る。これらの各素材は漆液の塗
布層が強固に接合する性質を備えているからである。ま
た、これらのうちのどの素材を核として用いるかは、温
度、振動の状況、湿度といった様々な環境を勘案して適
切に選定すべきである。上記核に有孔部材を用いた場合
には、漆液の塗布層に担持されている酸化チタン粉体と
流体との接触面積を広く確保することができるようにな
って高い浄化性能を発揮する光触媒を提供することがで
きるようになる。Materials such as wood, paper, metal, glass, and cloth can be suitably used for the core. This is because each of these materials has a property that the applied layer of the lacquer liquid is strongly bonded. Which of these materials should be used as the core should be appropriately selected in consideration of various environments such as temperature, vibration conditions, and humidity. When a perforated member is used for the core, a large contact area between the titanium oxide powder carried on the coating layer of the lacquer liquid and the fluid can be secured, and high purification performance is exhibited. A photocatalyst can be provided.
【０００９】本発明に係る流体浄化用光触媒の製造方法
は、核の表面に漆液を塗布した後、未乾燥状態の漆液の
塗布層に酸化チタン粉体をまぶしてその酸化チタン粉体
を未乾燥状態の塗布層に圧着させ、その後、塗布層を乾
燥させる、というものである。In the method for producing a photocatalyst for purifying fluid according to the present invention, a lacquer solution is applied to the surface of a core, and then a titanium oxide powder is coated on an undried lacquer solution-coated layer. This is to press the coated layer in an undried state, and then to dry the coated layer.
【００１０】この製造方法によると、塗布層にまぶした
酸化チタン粉体が、その後の圧着操作によって、塗布層
の表面に露出した状態でその塗布層中に埋め込まれるた
め、乾燥後の塗布層には、表面が塗布層から露出した酸
化チタン粉体が強固に担持されるようになる。したがっ
て、この製造方法によると、上記した本発明に係る光触
媒を得ることができる。According to this manufacturing method, the titanium oxide powder dusted on the coating layer is embedded in the coating layer in a state where the titanium oxide powder is exposed on the surface of the coating layer by a subsequent pressing operation. In this case, the titanium oxide powder whose surface is exposed from the coating layer is firmly supported. Therefore, according to this production method, the above-described photocatalyst according to the present invention can be obtained.
【００１１】[0011]
【発明の実施の形態】図１は本発明に係る流体浄化用光
触媒Ａの実施形態の構造説明図、図２は同光触媒の他の
実施形態の構造説明図である。FIG. 1 is a structural explanatory view of an embodiment of a photocatalyst A for purifying fluid according to the present invention, and FIG. 2 is a structural explanatory view of another embodiment of the photocatalyst.
【００１２】図１の光触媒Ａは平板状の核１の表面に塗
布された漆液の塗布層２に酸化チタン粉体（二酸化チタ
ン粉体）が担持されている。また、図２の光触媒Ａは球
状の核１の表面に塗布された漆液の塗布層２に酸化チタ
ン粉体が担持されている。核１には、木、紙、金属、ガ
ラス、布から選ばれる素材が用いられている。これらの
光触媒Ａでは、核１に対し漆液の塗布層がその漆液の性
質によって強固に接合しており、しかも、その塗布層２
が漆液の性質によって酸化チタン粉体に強固に接合して
いる。そのため、酸化チタン粉体が漆液の塗布層２に容
易に剥離したり脱落したりしない状態で強固に担持され
ている。このことから、これらの各実施形態の光触媒Ａ
は初期の浄化性能を長期間に亘って発揮するという耐久
性に優れた性質を発揮する。In the photocatalyst A shown in FIG. 1, a titanium oxide powder (titanium dioxide powder) is supported on a coating layer 2 of a lacquer applied to the surface of a flat core 1. In the photocatalyst A of FIG. 2, titanium oxide powder is supported on a coating layer 2 of lacquer applied to the surface of the spherical core 1. The core 1 is made of a material selected from wood, paper, metal, glass, and cloth. In these photocatalysts A, the coating layer of the lacquer liquor is firmly bonded to the core 1 due to the properties of the lacquer liquor.
Is strongly bonded to the titanium oxide powder due to the nature of the lacquer liquid. Therefore, the titanium oxide powder is firmly supported on the coating layer 2 of the lacquer liquid without easily peeling off or falling off. From this, the photocatalyst A of each of these embodiments was used.
Exhibits excellent durability, ie, exhibits an initial purification performance over a long period of time.
【００１３】上記核には、木、紙、金属、ガラス、布な
どの素材を好適に用い得る。たとえば、素材として木や
金属、ガラスを選択した場合には、光触媒Ａを平板状に
形成したり、平板状の光触媒Ａを組み合わせて水や空気
の流通路を備えた中空筒形に形成したりすることが可能
である。また、素材としてガラスや金属を選択すると、
光触媒Ａを微細球状に形成することが容易であるので、
そのような微細球状の光触媒Ａを木、紙、金属、ガラ
ス、布などでなる大きな部材に漆液の塗布層を介して担
持させておくことも可能である。特に、核１を金網やパ
ンチングメタルといった有孔部材で形成しておくと、漆
液の塗布層２に担持されている酸化チタン粉体と流体と
の接触面積を広く確保することができるようになって高
い浄化性能を発揮する光触媒を得ることが可能になる。Materials such as wood, paper, metal, glass and cloth can be suitably used for the core. For example, when wood, metal, or glass is selected as the material, the photocatalyst A may be formed into a flat plate shape, or the flat photocatalyst A may be combined into a hollow cylindrical shape having a water or air flow passage. It is possible to Also, if you select glass or metal as the material,
Since it is easy to form the photocatalyst A into a fine sphere,
It is also possible to carry such a fine spherical photocatalyst A on a large member made of wood, paper, metal, glass, cloth, or the like via a lacquer coating layer. In particular, if the core 1 is formed of a perforated member such as a wire mesh or a punched metal, a wide contact area between the titanium oxide powder carried on the lacquer liquid application layer 2 and the fluid can be secured. As a result, a photocatalyst exhibiting high purification performance can be obtained.
【００１４】図３及び図４は本発明に係る光触媒Ａを用
いて組み立てられることのできる空気浄化装置を例示し
ている。同装置は、左右の側板１１，１１の間に形成さ
れている空気流通路Ｆに、平板状の光触媒Ａを多段に配
置し、かつ、それらの光触媒Ａの上方と下方とに蛍光灯
でなる光源１０，１０を設置してある。また、平板状の
光触媒Ａの核には多孔部材が用いられている。左右の側
板１１，１１の内面には酸化チタン粉体を担持した漆液
の塗布層が形成されている。したがって、これらの側板
１１も光触媒として作用する。この空気浄化装置におい
て、空気流通路Ｆに空気を流通させると共に、光源１０
によって光触媒Ａに紫外線を照射しておくと、光触媒Ａ
に接触した空気がその光触媒Ａの作用によって浄化され
る。FIGS. 3 and 4 illustrate an air purifying apparatus that can be assembled using the photocatalyst A according to the present invention. In this device, flat photocatalysts A are arranged in multiple stages in an air flow passage F formed between left and right side plates 11 and 11, and fluorescent lamps are provided above and below the photocatalysts A. Light sources 10 and 10 are provided. A porous member is used for the core of the flat photocatalyst A. On the inner surfaces of the left and right side plates 11, 11, a coating layer of lacquer liquid carrying titanium oxide powder is formed. Therefore, these side plates 11 also function as photocatalysts. In this air purification device, air is circulated through the air flow passage F and the light source 10
When the photocatalyst A is irradiated with ultraviolet rays, the photocatalyst A
The air that has come into contact with is purified by the action of the photocatalyst A.
【００１５】本発明に係る光触媒Ａは、核１の表面に漆
液を塗布した後、未乾燥状態の漆液の塗布層２に酸化チ
タン粉体をまぶしてその酸化チタン粉体を未乾燥状態の
塗布層２に圧着させ、その後、塗布層２を乾燥させるこ
とによって得られる。塗布層２に酸化チタン粉体をまぶ
す工程は、核１が平板状である場合には、その平板状の
核１の表面に形成した塗布層２の上から酸化チタン粉体
を散布することによって行うことができる。また、核１
が球状である場合には、その球状の核１に漆液の塗布層
２を形成した後、その核１を酸化チタン粉体層の上で転
動させることによって行うことができる。また、酸化チ
タン粉体を未乾燥状態の塗布層２に圧着させる工程で
は、押圧ローラを用いて酸化チタン粉体を塗布層２の中
に押し込むという操作を行うことが望ましく、そのよう
にすると、塗布層２の中に押し込まれた酸化チタン粉体
が、塗布層２の乾燥後にアンカー作用を発揮して塗布層
２から容易に脱落しなくなる。In the photocatalyst A according to the present invention, after a lacquer solution is applied to the surface of the core 1, a titanium oxide powder is coated on the undried lacquer coating layer 2, and the titanium oxide powder is dried. By applying pressure to the coating layer 2 and then drying the coating layer 2. The step of dusting the coating layer 2 with the titanium oxide powder is performed by spraying the titanium oxide powder on the coating layer 2 formed on the surface of the flat core 1 when the core 1 is flat. It can be carried out. Nuclear 1
Is spherical, after forming the coating layer 2 of the lacquer liquid on the spherical core 1, the core 1 can be rolled on the titanium oxide powder layer. Further, in the step of pressing the titanium oxide powder to the coating layer 2 in an undried state, it is desirable to perform an operation of pressing the titanium oxide powder into the coating layer 2 using a pressing roller. The titanium oxide powder pressed into the coating layer 2 exerts an anchoring function after the coating layer 2 is dried and does not easily fall off the coating layer 2.
【００１６】図３及び図４で説明した構造の空気浄化装
置を用いて自動車製造工場や車検工場で空気浄化試験を
行ったところ、空気中の一酸化炭素量や炭化水素量が半
分近くにまで減少したことを確認している。When an air purification test was performed at an automobile manufacturing plant or a vehicle inspection plant using the air purification device having the structure described with reference to FIGS. 3 and 4, the amounts of carbon monoxide and hydrocarbons in the air were reduced to almost half. We confirm that it decreased.
【００１７】[0017]
【発明の効果】以上のように、本発明に係る流体浄化用
光触媒によれば、酸化チタン粉体の剥離や脱落が生じに
くくなって初期の浄化性能を長期間に亘って維持させる
ことができる、という効果が奏される。特に、この光触
媒は、漆液の塗布層に酸化チタンを担持させた構成にな
っているので、常温や低温などの温度環境下での使用に
適する。As described above, according to the photocatalyst for purifying fluid according to the present invention, the titanium oxide powder hardly peels off or falls off, and the initial purification performance can be maintained for a long period of time. This has the effect. In particular, since this photocatalyst has a structure in which titanium oxide is supported on a coating layer of a lacquer solution, it is suitable for use in a temperature environment such as normal temperature or low temperature.
【００１８】また、本発明に係る流体浄化用光触媒の製
造方法によれば、本発明に係る上記流体浄化用光触媒を
容易に得ることが可能になる。Further, according to the method of manufacturing a photocatalyst for purifying fluid according to the present invention, the photocatalyst for purifying fluid according to the present invention can be easily obtained.
【図１】本発明に係る流体浄化用光触媒の実施形態の構
造説明図である。FIG. 1 is a structural explanatory view of an embodiment of a fluid purification photocatalyst according to the present invention.
【図２】同光触媒の他の実施形態の構造説明図である。FIG. 2 is a structural explanatory view of another embodiment of the photocatalyst.
【図３】本発明に係る光触媒を用いて組み立てられた空
気浄化装置の平面視での構造説明図である。FIG. 3 is a structural explanatory view in plan view of an air purification device assembled using the photocatalyst according to the present invention.
【図４】同空気浄化装置の正面視での構造説明図であ
る。FIG. 4 is a structural explanatory view of the air purification device in a front view.
１ 核 ２ 漆液の塗布層 1 Core 2 Lacquer liquid coating layer
Claims (4)
化チタン粉体が担持されていることを特徴とする流体浄
化用光触媒。1. A photocatalyst for purifying fluid, wherein a titanium oxide powder is carried on a coating layer of lacquer liquid applied to the surface of a core.
ら選ばれる素材である請求項１に記載した流体浄化用光
触媒。2. The photocatalyst for fluid purification according to claim 1, wherein said core is a material selected from wood, paper, metal, glass and cloth.
求項２に記載した流体浄化用光触媒。3. The fluid purifying photocatalyst according to claim 1, wherein the core is a perforated member.
態の漆液の塗布層に酸化チタン粉体をまぶしてその酸化
チタン粉体を未乾燥状態の塗布層に圧着させ、その後、
塗布層を乾燥させることを特徴とする流体浄化用光触媒
の製造方法。4. After applying a lacquer solution on the surface of the core, the titanium oxide powder is applied to the undried lacquer application layer, and the titanium oxide powder is pressed on the undried application layer. ,
A method for producing a fluid purification photocatalyst, comprising drying an applied layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000382744A JP2002177792A (en) | 2000-12-15 | 2000-12-15 | Photocatalyst for cleaning fluid and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000382744A JP2002177792A (en) | 2000-12-15 | 2000-12-15 | Photocatalyst for cleaning fluid and method of manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002177792A true JP2002177792A (en) | 2002-06-25 |
Family
ID=18850516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000382744A Pending JP2002177792A (en) | 2000-12-15 | 2000-12-15 | Photocatalyst for cleaning fluid and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002177792A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004041431A1 (en) * | 2002-11-05 | 2004-05-21 | Toshio Kawakami | Method of roll-forming photocatalyst or the like on sphere |
| US20130011684A1 (en) * | 2011-07-05 | 2013-01-10 | Valinge Photocatalytic Ab | Coated wood products and method of producing coated wood products |
| US9375750B2 (en) | 2012-12-21 | 2016-06-28 | Valinge Photocatalytic Ab | Method for coating a building panel and a building panel |
| US9573126B2 (en) | 2012-03-20 | 2017-02-21 | Valinge Photocatalytic Ab | Photocatalytic composition |
| US9945075B2 (en) | 2013-09-25 | 2018-04-17 | Valinge Photocatalytic Ab | Method of applying a photocatalytic dispersion |
| US9963609B2 (en) | 2009-03-23 | 2018-05-08 | Valinge Photocatalytic Ab | Production of titania nanoparticle colloidal suspensions with maintained crystallinity by using a bead mill with micrometer sized beads |
-
2000
- 2000-12-15 JP JP2000382744A patent/JP2002177792A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004041431A1 (en) * | 2002-11-05 | 2004-05-21 | Toshio Kawakami | Method of roll-forming photocatalyst or the like on sphere |
| US9963609B2 (en) | 2009-03-23 | 2018-05-08 | Valinge Photocatalytic Ab | Production of titania nanoparticle colloidal suspensions with maintained crystallinity by using a bead mill with micrometer sized beads |
| US20130011684A1 (en) * | 2011-07-05 | 2013-01-10 | Valinge Photocatalytic Ab | Coated wood products and method of producing coated wood products |
| US11045798B2 (en) * | 2011-07-05 | 2021-06-29 | Valinge Photocatalytic Ab | Coated wood products and method of producing coated wood products |
| US9573126B2 (en) | 2012-03-20 | 2017-02-21 | Valinge Photocatalytic Ab | Photocatalytic composition |
| US9375750B2 (en) | 2012-12-21 | 2016-06-28 | Valinge Photocatalytic Ab | Method for coating a building panel and a building panel |
| US11666937B2 (en) | 2012-12-21 | 2023-06-06 | Valinge Photocatalytic Ab | Method for coating a building panel and a building panel |
| US9945075B2 (en) | 2013-09-25 | 2018-04-17 | Valinge Photocatalytic Ab | Method of applying a photocatalytic dispersion |
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