KR100631931B1 - Photocatalyst can confirm whether it is spread or not - Google Patents
Photocatalyst can confirm whether it is spread or not Download PDFInfo
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- KR100631931B1 KR100631931B1 KR1020040110275A KR20040110275A KR100631931B1 KR 100631931 B1 KR100631931 B1 KR 100631931B1 KR 1020040110275 A KR1020040110275 A KR 1020040110275A KR 20040110275 A KR20040110275 A KR 20040110275A KR 100631931 B1 KR100631931 B1 KR 100631931B1
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- photocatalyst
- solution
- weak acid
- wallpaper
- titanium dioxide
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 38
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 4
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims description 2
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 2
- ZPLCXHWYPWVJDL-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)methyl]-1,3-oxazolidin-2-one Chemical compound C1=CC(O)=CC=C1CC1NC(=O)OC1 ZPLCXHWYPWVJDL-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003637 basic solution Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
개시된 광촉매는, 중성인 이산화티탄 용액에 약산 용액이 혼합된다. 이와 같은 구성의 광촉매는 페놀프탈레인과 같은 약산의 용액을 광촉매에 혼합시킴으로서, 경제적이며 용이하게 그 도포 여부 및 도포정도를 식별할 수 있는 효과를 제공할 수 있다.In the disclosed photocatalyst, a weak acid solution is mixed with a neutral titanium dioxide solution. The photocatalyst having such a configuration can provide an effect that can be economically and easily distinguished from the application and the degree of application by mixing a solution of a weak acid such as phenolphthalein to the photocatalyst.
광촉매Photocatalyst
Description
본 발명은 광촉매에 관한 것으로서, 특히 건축물이나 벽지 등 광촉매를 도포한 곳에 광촉매가 적절히 도포되었는지 용이하게 확인할 수 있는 광촉매에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photocatalyst, and more particularly, to a photocatalyst which can easily check whether a photocatalyst is properly applied to a photocatalyst such as a building or a wallpaper.
일반적으로 광촉매란 빛에너지를 흡수하여 화학 반응 속도를 변화시키지만, 자기는 반응 전후에 변하지 않는 물질을 말한다. 이러한, 광촉매를 이용한 기술은 이산화티탄(TiO2) 등의 세라믹스 반도체에 빛을 조사함에 따라 생성되는 정공이나 전자의 산화ㆍ환원력을 이용하여 환경오염물질을 처리하는 것으로, 확산된 미량의 유해 유기화학물질을 화석연료를 사용하지 않고도 빛 에너지에 의해 분해, 무해화 할 수 있다.In general, a photocatalyst is a substance that absorbs light energy to change the rate of chemical reaction, but does not change before and after the reaction. The photocatalyst is a method of treating environmental pollutants using oxidation and reduction power of holes or electrons generated by irradiating light onto ceramic semiconductors such as titanium dioxide (TiO 2 ). The material can be decomposed and harmless by light energy without using fossil fuels.
그러나, 상기와 같은 광촉매는 무색, 무취로서 건축물 등 광촉매가 이용되는 산업분야에서 그 도포여부를 확인하기가 매우 어렵다. 즉, 건축물이나 벽지 등에 광촉매가 도포된 경우, 그 도포여부를 확인하기 위하여는 광촉매가 도포된 건축물 이나 벽지 등의 일부를 뜯어 광촉매 분석장비로 가져가 그 도포여부를 확인해야 하는 문제점이 있다.However, such a photocatalyst is colorless and odorless, and it is very difficult to confirm whether the photocatalyst is applied in an industrial field in which a photocatalyst is used, such as a building. In other words, when a photocatalyst is applied to a building or a wallpaper, there is a problem in that a part of the building or wallpaper to which the photocatalyst is applied is taken to a photocatalyst analysis device to check whether the coating is applied.
본 발명의 다른 목적 및 장점들은 하기에 설명될 것이며, 본 발명의 실시예에 의해 알게 될 것이다. 또한, 본 발명의 목적 및 장점들은 청구범위에 나타낸 수단 및 조합에 의해 실현될 수 있다.Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. In addition, the objects and advantages of the invention may be realized by the means and combinations indicated in the claims.
본 발명은 상기의 문제점을 해결하기 위하여 창출된 것으로서, 경제적이며 용이하게 광촉매의 도포여부를 확인할 수 있는 개선된 광촉매를 제공하는 것을 그 목적으로 한다.The present invention has been made to solve the above problems, and an object thereof is to provide an improved photocatalyst which can confirm whether the photocatalyst is applied economically and easily.
상기의 목적을 달성하기 위한 본 발명은, 중성인 산화티탄늄에 약산 용액이 혼합된다.In the present invention for achieving the above object, a weak acid solution is mixed with neutral titanium oxide.
여기서, 1ℓ의 광촉매를 만드는 경우 상기 이산화티탄 용액은 999.5~999.8㎖이고, 상기 약산 용액은 0.2~0.5㎖인 것이 바람직하다.Herein, when making 1 L of the photocatalyst, the titanium dioxide solution is preferably 999.5 to 999.8 ml, and the weak acid solution is 0.2 to 0.5 ml.
또한, 상기 약산 용액은 페놀프탈레인인 것이 바람직하다.In addition, the weak acid solution is preferably phenolphthalein.
이하 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, a preferred embodiment of the present invention will be described in detail.
이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.
따라서, 본 명세서에 기재된 실시예에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the configuration shown in the embodiments described herein is only one of the most preferred embodiment of the present invention, and does not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.
상기 광촉매는 이산화티탄(TiO2) 용액을 주성분으로 하며, 1ℓ의 광촉매를 만드는 경우, 이산화티탄 용액 999.5~999.8㎖에 약산 용액 0.2~0.5㎖가 혼합된 것이다. The photocatalyst has a titanium dioxide (TiO 2 ) solution as a main component, and when a 1 L photocatalyst is prepared, a weak acid solution of 0.2-0.5 ml is mixed with 999.5-999.8 ml of a titanium dioxide solution.
상기 약산 용액으로는 페놀프탈레인, BTB 용액, 메틸렌블루 등의 지시약을 사용할 수 있다.As the weak acid solution, indicators such as phenolphthalein, BTB solution and methylene blue can be used.
이와 같은 약산 용액이 혼합된 광촉매를 벽지 등에 도포한 후, 그 도포 여부 및 도포 정도를 확인하기 위하여 염기성 용액이나 산성 또는 중성 용액 등을 광촉매가 도포된 벽지 등에 바르면 광촉매에 혼합된 약산 용액에 따라 그 색깔이 변화하게 된다. 예컨대, 페놀프탈레인 용액이 혼합된 광촉매가 벽지 등에 도포된 경우, 염기성 용액인 수산화나트륨 용액을 벽지에 바르게 되면, 벽지는 붉게 변화하게 된다. 따라서, 벽지 등에 광촉매가 도포된 것을 확인할 수 있고, 페놀프탈레인 용액과 수산화나트륨 용액이 혼합됨으로써 붉게 변화한 부분은 광촉매를 이루는 이산화 티탄에 의하여 분해되어 붉게 변화한 부분이 제거되어 원래의 벽지 등의 색을 찾게 된다.After applying the photocatalyst mixed with such weak acid solution to the wallpaper, and applying basic solution, acidic or neutral solution, etc. to the wallpaper coated with photocatalyst in order to confirm the application and the degree of application, according to the weak acid solution mixed with the photocatalyst The color will change. For example, when a photocatalyst mixed with a phenolphthalein solution is applied to a wallpaper or the like, when the sodium hydroxide solution, which is a basic solution, is applied to the wallpaper, the wallpaper turns red. Therefore, it can be confirmed that the photocatalyst has been applied to the wallpaper, and the reddish portion by mixing the phenolphthalein solution and the sodium hydroxide solution is decomposed by the titanium dioxide constituting the photocatalyst, and the reddish portion is removed to remove the color of the original wallpaper. You will find it.
여기서, 전체 부피가 1ℓ인 광촉매를 만드는 경우, 상기 중성의 이산화티탄 용액 999.5~999.8㎖에 약산 용액 0.2~0.5㎖를 혼합하는 이유는, 0.2㎖ 미만의 약산 용액을 중성의 이산화티탄 용액에 혼합하는 경우, 수산화나트륨과 같은 염기성 용액이나 그 밖의 산성 또는 중성 용액을 바르면 그 색차가 뚜렷이 나타나지 않아 벽지 등에 도포된 광촉매 도막의 두께를 가늠하기가 곤란하고, 0.5㎖를 초과하게 되면 이산화티탄에 의하여 약산 용액을 분해하기가 곤란하기 때문이다.Here, in the case of making a photocatalyst having a total volume of 1 L, the reason for mixing the weak acid solution 0.2-0.5 ml with 999.5-999.8 ml of the neutral titanium dioxide solution is to mix the weak acid solution of less than 0.2 ml with the neutral titanium dioxide solution. In this case, when the basic solution such as sodium hydroxide or other acidic or neutral solution is applied, the color difference does not appear clearly, making it difficult to measure the thickness of the photocatalyst coating film applied to the wallpaper. This is because it is difficult to decompose.
이와 같이 약산 용액이 혼합된 광촉매에 의하면, 각종 건축물이나 벽지 등에 광촉매를 도포한 후, 그 도포 여부 및 도포 정도를 용이하게 식별할 수 있으므로 그 식별 방법이 경제적인 장점이 있다.According to the photocatalyst in which the weak acid solution is mixed in this way, the photocatalyst can be easily identified after applying the photocatalyst to various buildings or wallpaper, and the identification method is economically advantageous.
상술한 바와 같이 본 발명의 광촉매에 의하면, 페놀프탈레인과 같은 약산의 용액을 광촉매에 혼합시킴으로서, 경제적이며 용이하게 그 도포 여부 및 도포정도를 식별할 수 있는 효과를 제공한다.As described above, according to the photocatalyst of the present invention, by mixing a solution of a weak acid such as phenolphthalein into the photocatalyst, it provides an effect that can be economically and easily distinguished from the application and degree of application.
이상과 같이, 본 발명은 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술 사상과 아래에 기재될 청구범위의 균등 범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As mentioned above, although this invention was demonstrated by the limited Example, this invention is not limited by this, It is described by the person of ordinary skill in the art to this invention, and the following. Of course, various modifications and variations are possible within the scope of equivalent claims.
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| KR1020040110275A KR100631931B1 (en) | 2004-12-22 | 2004-12-22 | Photocatalyst can confirm whether it is spread or not |
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| KR1020040110275A KR100631931B1 (en) | 2004-12-22 | 2004-12-22 | Photocatalyst can confirm whether it is spread or not |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133867A (en) | 1982-02-05 | 1983-08-09 | Takaaki Yamauchi | Surface application method of concrete structure and check coating material |
| JP2001213665A (en) | 1999-09-06 | 2001-08-07 | Nippon Shokubai Co Ltd | Ceramics, catalyst carrier, their manufacturing method, catalyst for manufacturing ethylene oxide using carrier, its manufacturing method and manufacturing method of ethylene oxide |
| JP2002113078A (en) | 2000-10-05 | 2002-04-16 | Mitsubishi Paper Mills Ltd | Malodor sensing deodorizing filter |
| JP2003129290A (en) | 2001-10-17 | 2003-05-08 | Daiwa House Ind Co Ltd | Process for preparing anodized titanium film for photocatalyst |
-
2004
- 2004-12-22 KR KR1020040110275A patent/KR100631931B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58133867A (en) | 1982-02-05 | 1983-08-09 | Takaaki Yamauchi | Surface application method of concrete structure and check coating material |
| JP2001213665A (en) | 1999-09-06 | 2001-08-07 | Nippon Shokubai Co Ltd | Ceramics, catalyst carrier, their manufacturing method, catalyst for manufacturing ethylene oxide using carrier, its manufacturing method and manufacturing method of ethylene oxide |
| JP2002113078A (en) | 2000-10-05 | 2002-04-16 | Mitsubishi Paper Mills Ltd | Malodor sensing deodorizing filter |
| JP2003129290A (en) | 2001-10-17 | 2003-05-08 | Daiwa House Ind Co Ltd | Process for preparing anodized titanium film for photocatalyst |
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| Publication number | Publication date |
|---|---|
| KR20060071621A (en) | 2006-06-27 |
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