JP2005069812A - Simple method and kit for photocatalyst performance assessment - Google Patents

Simple method and kit for photocatalyst performance assessment Download PDF

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JP2005069812A
JP2005069812A JP2003298559A JP2003298559A JP2005069812A JP 2005069812 A JP2005069812 A JP 2005069812A JP 2003298559 A JP2003298559 A JP 2003298559A JP 2003298559 A JP2003298559 A JP 2003298559A JP 2005069812 A JP2005069812 A JP 2005069812A
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photocatalyst
reagent
light source
breakwater
excitation light
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Hisayoshi Mori
久義 森
Nobuya Hino
暢也 日野
Takeshi Yo
健 楊
Yoshiaki Uryu
喜章 瓜生
Yoshi Wakairo
好 若色
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DIA KASEI KK
MORI SEITAI KK
NITTOKU INSATSU KK
PIATEKKU KK
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DIA KASEI KK
MORI SEITAI KK
NITTOKU INSATSU KK
PIATEKKU KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple photocatalyst performance assessment method which can evaluate photocatalyst performance of photocatalyst products (including photocatalyst materials), and a photocatalyst performance assessment kit which uses the simple assessment method. <P>SOLUTION: The kit comprises an excitation light source 1 of a photocatalyst, a bleaching dye reagent 15 (such as methylene blue reagent) which detects photocatalysis of the photocatalyst, and a stick-on label which contains the bleaching dye reagent 15 and adheres to a photocatalyst product 20 to be measured. The surface of an optically transparent plastic film 5 on which moles are provided is adhered to the photocatalyst product 20. Excitation light emitted from the excitation light source 1 is projected to a reagent layer 15' to bleach the bleaching dye. According to the bleaching level of the bleaching dye, the photocatalyst performance is evaluated semi-quantitatively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、空気清浄機、タイル、内外装材、その他各種の光触媒製品(光触媒材を含む、以下同様)の光触媒性能を簡単に測定評価できる光触媒性能簡易評価法と、この簡易評価法を実施するための光触媒性能簡易評価キットの提供に関する。   The present invention implements a simple photocatalytic performance evaluation method that can easily measure and evaluate the photocatalytic performance of air purifiers, tiles, interior / exterior materials, and other various photocatalytic products (including photocatalytic materials, the same applies hereinafter), and this simple evaluation method. It is related with provision of the photocatalyst performance simple evaluation kit for doing.

近時、光触媒の光触媒性能(空気浄化効果、水質浄化効果、セルフクリーニング効果、抗菌効果など)を具有する各種様々な光触媒製品が目覚ましい勢いで上市されてきている。   Recently, various photocatalytic products having photocatalytic performance (air purification effect, water purification effect, self-cleaning effect, antibacterial effect, etc.) of the photocatalyst have been put on the market at a remarkable speed.

従来、光触媒性能の品質については各社の自主規格基準に基づいて測定評価され商品化されていたため、消費者側が側定評価法の異なる自主規格基準を対比しても実質的には無意味であり、より高品質であり安全性に優れた光触媒製品を適切に選択できる環境であるとは云えなかった。   Conventionally, the quality of photocatalyst performance has been measured and evaluated based on the voluntary standards of each company, so it is practically meaningless for consumers to compare voluntary standards with different side evaluation methods. Therefore, it could not be said that the environment was such that a photocatalyst product with higher quality and superior safety could be appropriately selected.

近時、光触媒製品の開発、販売に携わるものを構成メンバーとする光触媒製品技術協議会、光触媒フォーラムが結成され、光触媒性能および安全性に関する規格化(標準化)が協議、検討されている。   Recently, the Photocatalyst Product Technical Council and the Photocatalyst Forum, which are members of photocatalyst product development and sales, have been formed, and standardization (standardization) on photocatalyst performance and safety has been discussed and studied.

光触媒性能の評価法には、精度(正確度と精密度)に優れていることのみならず、高価な設備備品を必要とせず、また、特別な化学的な知識や分析技術が不要で何時でもまた誰でも簡便かつ普遍的に測定評価できることが要求される。   The photocatalyst performance evaluation method not only has excellent accuracy (accuracy and precision), but also does not require expensive equipment, and does not require special chemical knowledge or analysis techniques, so it can be used at any time. In addition, anyone should be able to measure and evaluate easily and universally.

従来の光触媒性能評価法としては、光触媒製品技術協議会により、(1)光触媒性能評価試験法I(液相フィルム密着法)、(2)光触媒性能評価試験法IIa(ガスパックA法)、(3)光触媒性能評価試験法IIb(ガスパックB法)が提案されており、特に平板形状を有する光触媒製品の光触媒性能は液相フィルム密着法などにて測定評価できるとしている(非特許文献1)。   As conventional photocatalyst performance evaluation methods, the Photocatalyst Product Technical Council (1) Photocatalyst performance evaluation test method I (liquid phase film adhesion method), (2) Photocatalyst performance evaluation test method IIa (gas pack A method), ( 3) Photocatalyst performance evaluation test method IIb (gas pack B method) has been proposed. In particular, the photocatalytic performance of a photocatalyst product having a flat plate shape can be measured and evaluated by a liquid phase film adhesion method or the like (Non-patent Document 1). .

「光触媒製品技術協議会会則・諸規則および試験法」、光触媒製品技術協議会発行、2003年6月、P.46−60“Photocatalyst Product Technology Council Rules / Rules and Test Methods”, Photocatalyst Product Technology Council, June 2003, p. 46-60

しかしながら、上記(1)ないし(3)の評価法はいずれも、分析操作が比較的簡単でしかも高価な機械設備を必要としないという観点からは評価できるものの、例えば(1)光触媒性能評価試験法I(液相フィルム密着法)にあっては、脱色色素試薬(例えばメチレンブルー試薬)の調整に多少の訓練が必要であるとか、光触媒製品の水平面しか適用できないなどの不具合があり、また、現地施工光触媒製品(例えば垂直壁面など)を実地評価したい場合には不向きであった。   However, although any of the evaluation methods (1) to (3) can be evaluated from the viewpoint that the analytical operation is relatively simple and does not require expensive mechanical equipment, for example, (1) Photocatalyst performance evaluation test method In I (liquid phase film adhesion method), there are problems such as the need for some training to adjust the decolorizing dye reagent (eg, methylene blue reagent), and only the horizontal surface of the photocatalyst product can be applied. This is not suitable for the practical evaluation of photocatalyst products (for example, vertical wall surfaces).

本発明は、上記の問題に鑑みてなされたものであり、その目的は、特には、空気清浄機、タイル、内外装材、その他各種の光触媒製品(光触媒材を含む)の光触媒性能を簡単に評価できる光触媒性能簡易評価法と、この簡易評価法を実施するための光触媒性能簡易測定評価キットを提供せんとするものである。   The present invention has been made in view of the above problems, and its purpose is to simplify the photocatalytic performance of air cleaners, tiles, interior / exterior materials, and other various photocatalytic products (including photocatalytic materials). It is intended to provide a photocatalyst performance simple evaluation method that can be evaluated and a photocatalyst performance simple measurement evaluation kit for carrying out this simple evaluation method.

上記課題を解決するために本発明が採用した手段は、請求項1の発明は、光触媒製品の光触媒性能を測定し評価する簡易評価法であって、光透過性プラスチックフィルム上に備えたリング形状で膜厚10〜50μmの防波堤の内側に脱色色素試薬を収容し、光透過性プラスチックフィルムの防波堤を備えた面側を光触媒製品に面密着させ、ついで、励起光源から放射される励起光を、光透過性プラスチックフィルム側から前記防波堤内に向けて照射することにより色素を脱色させ、色素の脱色を指標にして光触媒性能を測定評価するところに特徴がある。   The means employed by the present invention to solve the above problems is that the invention of claim 1 is a simple evaluation method for measuring and evaluating the photocatalytic performance of a photocatalyst product, comprising a ring shape provided on a light-transmitting plastic film The decolorizing dye reagent is accommodated inside the breakwater having a film thickness of 10 to 50 μm, the surface side of the light-transmitting plastic film provided with the breakwater is brought into surface contact with the photocatalyst product, and then the excitation light emitted from the excitation light source is It is characterized in that the dye is decolored by irradiating the breakwater from the light transmissive plastic film side, and the photocatalytic performance is measured and evaluated using the decolorization of the dye as an index.

請求項2の発明は、請求項1記載の光触媒性能簡易評価法において、前記脱色色素試薬が、0.1〜40重量%分散剤を含む終濃度10〜100ppmのメチレンブルー水溶液であるとともに、前記励起光源が紫外線光源であり前記防波堤内に紫外線強度0.5〜200mW/cm2の割合で照射させるところに特徴がある。 The invention according to claim 2 is the simple photocatalytic performance evaluation method according to claim 1, wherein the decolorizing dye reagent is a methylene blue aqueous solution having a final concentration of 10 to 100 ppm containing 0.1 to 40% by weight of a dispersant, and the excitation It is characterized in that the light source is an ultraviolet light source and the breakwater is irradiated at a rate of ultraviolet intensity of 0.5 to 200 mW / cm 2 .

請求項1、2の発明によると、特別な化学的な知識や分析技術が不要で、誰でもまたどこでも簡便かつ普遍的に測定評価でき、また、例えば現地施工光触媒製品の水平面ないし垂直面のどの位置でも自在に性能評価ができる。   According to the first and second aspects of the invention, no special chemical knowledge or analysis technique is required, and anyone can easily and universally measure and evaluate. The performance can be evaluated at any position.

特に、請求項2の発明によると、より優れた精度(精密度、正確度)で、失敗することなく、光触媒製品の光触媒性能が評価できる。   In particular, according to the invention of claim 2, the photocatalytic performance of the photocatalytic product can be evaluated with better accuracy (precision, accuracy) and without failure.

つぎに、請求項3の発明は、光触媒の励起光源と、該光触媒の光触媒作用を検出する脱色色素試薬と、該脱色色素試薬を収容され光触媒製品に密着させる貼着ラベルとを含み構成された光触媒性能簡易評価キットであって、前記貼着ラベルが、貼着剤にて剥離可能に備えられた離けい紙と、該離けい紙の上面に配され脱色色素試薬のはみ出しを防止するための防波堤と、前記防波堤の上面を被覆するとともに光触媒製品に密着させるに際し脱色色素試薬の支持基材となる光透過性プラスチックフィルムと、光触媒製品に密着させる貼着剤とを有するところに特徴がある。   Next, the invention of claim 3 comprises an excitation light source of a photocatalyst, a decoloring dye reagent that detects the photocatalytic action of the photocatalyst, and an adhesive label that contains the decoloring dye reagent and adheres closely to the photocatalyst product. A simple evaluation kit for photocatalytic performance, wherein the sticking label is provided with a release paper that can be peeled off by a sticking agent, and an exfoliation of a decoloring dye reagent disposed on the top surface of the release paper. It is characterized in that it has a breakwater, a light-transmitting plastic film that serves as a supporting base material for the decolorizing dye reagent when covering the top surface of the breakwater and making it adhere to the photocatalyst product, and an adhesive that adheres to the photocatalyst product.

請求項4の発明は、請求項3記載の光触媒性能簡易評価キットにおいて、前記励起光源が先端部から励起光を放射する光源室に収容され、脱色色素試薬が先端部から吐出させる試薬室に収容されており、前記光源室と試薬室が互いに背合わせ状態に連設されたペンシルタイプの光源試薬保持具として形成されているところに特徴がある。   The invention of claim 4 is the photocatalyst performance simple evaluation kit according to claim 3, wherein the excitation light source is accommodated in a light source chamber that emits excitation light from a tip portion, and a decolorizing dye reagent is accommodated in a reagent chamber that is discharged from the tip portion. It is characterized in that the light source chamber and the reagent chamber are formed as a pencil-type light source reagent holder connected in a back-to-back state.

請求項5の発明は、請求項3又は4記載の光触媒性能簡易評価キットにおいて、前記脱色色素試薬は0.1〜40重量%の分散剤を含む終濃度10〜100ppmのメチレンブルー水溶液であり、前記励起光源は前記防波堤内に対して紫外線強度0.5〜200mW/cm2の割合で照射可能な紫外線光源であるところに特徴がある。 The invention according to claim 5 is the photocatalyst performance simple evaluation kit according to claim 3 or 4, wherein the decoloring dye reagent is a methylene blue aqueous solution having a final concentration of 10 to 100 ppm containing 0.1 to 40% by weight of a dispersant, The excitation light source is characterized in that it is an ultraviolet light source that can irradiate the breakwater at a rate of ultraviolet intensity of 0.5 to 200 mW / cm 2 .

請求項3ないし5の発明によると、光触媒性能簡易評価法を、例えば現地施工光触媒製品の水平面ないし垂直面のどの位置でも簡便かつ再現性よく実施できる。   According to the inventions of claims 3 to 5, the photocatalyst performance simple evaluation method can be carried out easily and with good reproducibility, for example, at any position on the horizontal plane or vertical plane of the locally applied photocatalyst product.

特に、請求項5の発明によると、光触媒性能簡易評価法を、失敗することなくかつより優れた精度で実施できる。   In particular, according to the invention of claim 5, the photocatalyst performance simple evaluation method can be carried out without failure and with higher accuracy.

つぎに、請求項6の発明は、光触媒の励起光源を収容し先端部から励起光を放射させる光源室と、該光源室に背合わせ状態に連設され先端部から脱色色素試薬を吐出させる試薬室とを有しペンシルタイプに形成されているところに特徴を有する光源試薬保持具を、その要旨とする。   Next, the invention according to claim 6 is a light source chamber that houses the excitation light source of the photocatalyst and emits excitation light from the tip portion, and a reagent that is connected to the light source chamber in a back-to-back state and discharges the decolorizing dye reagent from the tip portion. The gist of the light source reagent holder is characterized in that it has a chamber and is formed in a pencil type.

つぎに、請求項7の発明は、貼着剤にて剥離可能に備えられた離けい紙と、該離けい紙の上面に配され色素脱色試薬がはみ出ないように防止する防波堤と、前記防波堤の上面を被覆するとともに光触媒製品に密着させるに際して脱色色素試薬の支持基材となる光透過性プラスチックフィルムとからなるところに特徴を有する貼着ラベルを、その要旨とする。   Next, the invention of claim 7 is a release paper provided so as to be peelable by an adhesive, a breakwater arranged on the top surface of the release paper to prevent the pigment decolorizing reagent from protruding, and the breakwater The gist of the present invention is an adhesive label characterized by comprising a light-transmitting plastic film that serves as a supporting base material for the decolorizing dye reagent when the upper surface is coated and adhered to the photocatalyst product.

本発明によれば、光触媒性能を評価する際に、煩雑で面倒な試薬調整や特別な設備、器具を必要とせず、天井面、その他のどのような面に対しても簡単に貼着固定でき、目視にて確認評価でき、操作技術が簡単で熟練する必要がなく、さらに、消費者にあっては光触媒製品の光触媒効果を確実に視認できるために商品価値が向上するなど、実効性に優れた作用効果が得られる。   According to the present invention, when evaluating the photocatalytic performance, it is possible to easily attach and fix to the ceiling surface or any other surface without requiring complicated and troublesome reagent adjustment and special equipment and instruments. In addition, it can be visually confirmed and evaluated, the operation technique is simple and does not need to be skilled, and for consumers, the photocatalytic effect of the photocatalyst product can be confirmed with certainty. Effects are obtained.

本明細書において、脱色色素とは、光触媒の光触媒作用によって酸化させて脱色可能な色素のことであり、メチレンブルー、フクシン、インジゴカルミン、各種食紅用有機系色素などが例示できる。また、分散剤とは、光透過性プラスチックフィルムへの親水性を改善するための補助剤として用いるものであり、界面活性剤、でんぷんのり、カンテン、グリセリン、あるいは、ラポナイトに代表される無機層状化合物などが例示できる。   In the present specification, the decolorizing dye is a dye that can be oxidized and decolored by the photocatalytic action of a photocatalyst, and examples thereof include methylene blue, fuchsin, indigo carmine, and various organic dyes for food red. Further, the dispersant is used as an auxiliary agent for improving hydrophilicity to the light-transmitting plastic film, and is an inorganic layered compound represented by a surfactant, starch paste, agar, glycerin, or laponite. Etc. can be exemplified.

以下、脱色色素がメチレンブルーでありかつ分散剤が界面活性剤である場合を例にして本発明の実施の形態を説明するが、他の脱色色素と分散剤を組合せする場合には最適条件(特に濃度関係)が異なることがあるため、その都度、これらを予備的に検討して最適条件になるように設計変更する必要がある。   Hereinafter, embodiments of the present invention will be described by taking as an example the case where the decolorizing dye is methylene blue and the dispersing agent is a surfactant. However, when combining other decoloring dyes and dispersing agents, optimum conditions (especially (Concentration relationship) may be different, and it is necessary to make a design change so that the optimum conditions are obtained by preliminary examination each time.

図1(a)は本発明に係るの貼着ラベル10の全体平面図、図1(b)は図1(a)のA−A線に沿った部分拡大図である。図2は光触媒製品に密着させるに際して剥離紙7から貼着ラベル10を取り外した状態を概略的に示す平面図であり、図3はメチレンブルー試薬を分注している状態を模式的に示す要部断面図である。   Fig.1 (a) is the whole top view of the sticking label 10 which concerns on this invention, FIG.1 (b) is the elements on larger scale along the AA line of Fig.1 (a). FIG. 2 is a plan view schematically showing a state in which the adhesive label 10 has been removed from the release paper 7 when closely contacting the photocatalyst product, and FIG. 3 is a schematic view showing a state where the methylene blue reagent is being dispensed. It is sectional drawing.

本発明の光触媒性能簡易評価キットは、光触媒の励起光を放射する励起光源1と、光触媒の光触媒作用にて生成する活性酸素によって脱色されるメチレンブルー試薬15と、メチレンブルー試薬漏洩防止用の防波堤2を有し最終的には光触媒製品に貼付密着する際の支持基材になる光透過性プラスチックフィルム5とから構成されている。   The photocatalyst performance simple evaluation kit of the present invention includes an excitation light source 1 that emits excitation light of a photocatalyst, a methylene blue reagent 15 that is decolorized by active oxygen generated by the photocatalytic action of the photocatalyst, and a breakwater 2 for preventing leakage of the methylene blue reagent. Finally, it is composed of a light-transmitting plastic film 5 that becomes a support base material when it is stuck and adhered to the photocatalyst product.

貼着ラベル10は、離けい紙7と、離けい紙7の上面に配されメチレンブルー試薬15がはみ出ないように防止する円形ないし方形(リング形状)で膜厚10〜50μmの防波堤2と、該防波堤2上面を被覆する光透過性プラスチックフィルム5とから構成されており(図1参照)、光触媒製品20に貼付密着するに際しては、離けい紙7を剥離して防波堤2を露出させ、表裏を逆転させて光透過性プラスチックフィルム5の上面に防波堤2が存するようにし、ついで、防波堤2の内側にメチレンブルー試薬を分注収容するようになっている(図2、3参照)。従って、本発明に係る光透過性プラスチックフィルム5は、貼着ラベルの上面を被覆する被覆フィルムであるとともに、メチレンブルー試薬15を支持する支持基材でもある。光透過性プラスチックフィルム5の素材を制限するものではないが、光透過性が良好で加工性に優れていることが好ましい。   The sticking label 10 includes a release paper 7, a breakwater 2 having a circular or square shape (ring shape) disposed on the upper surface of the release paper 7 to prevent the methylene blue reagent 15 from protruding, and a thickness of 10 to 50 μm. It consists of a light-transmitting plastic film 5 that covers the top surface of the breakwater 2 (see FIG. 1). When sticking and sticking to the photocatalyst product 20, the release paper 7 is peeled off to expose the breakwater 2, The breakwater 2 is present on the upper surface of the light-transmitting plastic film 5 by being reversed, and then the methylene blue reagent is dispensed and accommodated inside the breakwater 2 (see FIGS. 2 and 3). Therefore, the light-transmitting plastic film 5 according to the present invention is a covering film for covering the upper surface of the sticking label and also a supporting substrate for supporting the methylene blue reagent 15. Although the raw material of the light transmissive plastic film 5 is not limited, it is preferable that the light transmissive plastic film 5 has good light transmittance and excellent workability.

メチレンブルー試薬15は、例えば0.1〜40重量%(好ましくは10〜30重量%程度)の界面活性剤を含む終濃度10〜100ppm(好ましくは30〜60ppm程度)のメチレンブルー水溶液である。なお、60ppm以上のメチレンブルーを含有させると脱色時間が長くなり、メチレンブルーが30ppm以下であると脱色の有無を評価判定し難くなる。   The methylene blue reagent 15 is a methylene blue aqueous solution having a final concentration of 10 to 100 ppm (preferably about 30 to 60 ppm) containing a surfactant of 0.1 to 40% by weight (preferably about 10 to 30% by weight), for example. In addition, when 60 ppm or more of methylene blue is contained, the decolorization time becomes long, and when methylene blue is 30 ppm or less, it is difficult to evaluate and judge the presence or absence of decoloration.

界面活性剤は、例えばイオン系界面活性剤及びノニオン系界面活性剤のいずれの界面活性剤を用いることもできる。より具体的には、硫酸エステル塩、スルフォン酸塩及びリン酸エステル塩等のアニオン系界面活性剤、ポリエチレングリコール型及び多価アルコール型ノニオン系界面活性剤、並びにアミノ酸及びベタイン型両性界面活性剤などを挙げることができる。なお、界面活性剤の至適濃度は界面活性剤の種類によりそれぞれ異なるが、例えばラウリル酸アミドプロピルベタイン、ポリエチレンラウリルエーテル酢酸ナトリウムでは約20重量%である。   As the surfactant, for example, any of an ionic surfactant and a nonionic surfactant can be used. More specifically, anionic surfactants such as sulfate ester salts, sulfonate salts and phosphate ester salts, polyethylene glycol type and polyhydric alcohol type nonionic surfactants, and amino acid and betaine type amphoteric surfactants, etc. Can be mentioned. The optimum concentration of the surfactant varies depending on the type of the surfactant. For example, in the case of amidopropyl betaine laurate and sodium sodium lauryl ether acetate, it is about 20% by weight.

防波堤2は、試薬保持部3を構成するとともに、試薬保持部3に充填収容したメチレンブルー試薬15の漏れだし(はみ出し)を防止するためのもので、好適には、膜厚(高さ)10〜50μmで、内面積が0.3〜2cm2程度の円形ないし方形のリング形状に形成される。膜厚(試薬層15’)が10μm以下であると、高濃度メチレンブルー試薬15を調整する必要があるだけでなく試薬層15’を均等な厚さに形成し難い傾向があり、50μm以上であると、メチレンブルー試薬15が漏れ易いため、光触媒製品(被検体)20に対して貼着ラベル10を密着させ難い傾向がある。 The breakwater 2 constitutes the reagent holding unit 3 and prevents leakage of the methylene blue reagent 15 filled and accommodated in the reagent holding unit 3, and preferably has a film thickness (height) of 10 to 10 It is formed in a circular or square ring shape with an inner area of about 0.3 to 2 cm 2 at 50 μm. When the film thickness (reagent layer 15 ′) is 10 μm or less, it is not only necessary to adjust the high-concentration methylene blue reagent 15, but also the reagent layer 15 ′ tends to be difficult to form with a uniform thickness, which is 50 μm or more. Then, since the methylene blue reagent 15 is likely to leak, there is a tendency that the adhesive label 10 is difficult to adhere to the photocatalyst product (subject) 20.

防波堤2の外側には貼着剤4が全面に塗布されており、液漏れ防止と共に、光触媒製品20に対する貼着ラベル10の貼着作業を容易ならしめている。なお、防波堤2がメチレンブルー色以外の例えばピンクないし赤色等に彩色されていると、また貼着層がメチレンブルー試薬の色と同色ないし近似色に彩色しておくと脱色の程度を目視判定する際のコントロールとして利用でき、半定量的な脱色判定が容易となるので好ましい。   The adhesive 4 is applied to the entire surface of the breakwater 2 to prevent liquid leakage and facilitate the operation of attaching the adhesive label 10 to the photocatalyst product 20. When the breakwater 2 is colored in a color other than methylene blue, such as pink or red, and when the adhesive layer is colored in the same color as the methylene blue reagent or in an approximate color, the degree of decoloration is determined visually. This is preferable because it can be used as a control and facilitates semi-quantitative decolorization determination.

励起光源1は、防波堤2の内側に存するメチレンブルー試薬15に対して紫外線を照射するためのものであり、その種類などを制限するものではないが、電気的・光学的特性、光出力などに優れるとともに小型化でき持ち運びしやすいことが好ましく、紫外線LED、紫外線レーザ、紫外線ランプなどが例示できる、なお、光触媒の励起光源1を収容し先端部1aから励起光を放射させる光源室32と、該光源室32に背合わせ状態に連設され先端部31aからメチレンブルー試薬15を吐出させる試薬室31とを具備してペンシルタイプに構築した光源試薬保持具30(図5参照)によると、消しゴム付き鉛筆のように、メチレンブルー試薬15ならびに励起光源1の管理、運搬、使い勝手などにおいてその利便性が向上するから好適である(請求項6の発明)。   The excitation light source 1 is for irradiating the methylene blue reagent 15 existing inside the breakwater 2 with ultraviolet rays, and is not limited in its type, but is excellent in electrical / optical characteristics, light output, and the like. It is preferable that the light source chamber 32 is small and easy to carry, and can be exemplified by an ultraviolet LED, an ultraviolet laser, and an ultraviolet lamp. The light source chamber 32 that houses the excitation light source 1 of the photocatalyst and emits the excitation light from the tip 1a, and the light source According to the light source reagent holder 30 (see FIG. 5) which is provided in a pencil type with a reagent chamber 31 which is connected back to back to the chamber 32 and discharges the methylene blue reagent 15 from the tip 31a. As described above, it is preferable because the convenience of the methylene blue reagent 15 and the excitation light source 1 is improved in terms of management, transportation, convenience, and the like. (Invention of claim 6).

ついで、叙上の光触媒性能簡易評価キットを使用した光触媒性能簡易評価法について説明する。   Next, a simple photocatalyst performance evaluation method using the above-described simple photocatalyst performance evaluation kit will be described.

先ず、貼着ラベル10の裏面に存する離けい紙7を剥がし取り、光透過性プラスチックフィルム5が最下層となるように裏返し、防波堤2で囲まれた試薬保持部3中にメチレンブルー試薬15を分注し(図3参照)、さらに、光触媒製品20の評価部位(好適には平坦面)を注意深く押し当て空気が入り込まないように両者を密着させた後、再度裏返して、光透過性プラスチックフィルム5が最上層となるようにセットする(図4参照)。   First, the release paper 7 existing on the back surface of the adhesive label 10 is peeled off and turned over so that the light-transmitting plastic film 5 becomes the lowermost layer, and the methylene blue reagent 15 is separated into the reagent holding part 3 surrounded by the breakwater 2. Further, after carefully pressing the evaluation portion (preferably a flat surface) of the photocatalyst product 20 so that the air does not enter, the two are turned over again, and the light-transmitting plastic film 5 is poured. Is set to be the uppermost layer (see FIG. 4).

つぎに、試薬保持部3の位置に、メチレンブルー試薬15と励起光源1間を一定距離(10mm以下)に保持するための外枠9を配し、外枠9の上面にセットした励起光源1の先端部1aから放射される励起光(紫外線)を、光透過性プラスチックフィルム5を介してメチレンブルー試薬層15’に対して所定時間(1時間未満)照射し続け、メチレンブルーの脱色度合いを指標にして、光触媒製品20の光触媒性能を半定量的に測定し評価するものである。   Next, an outer frame 9 for holding a fixed distance (10 mm or less) between the methylene blue reagent 15 and the excitation light source 1 is arranged at the position of the reagent holding unit 3, and the excitation light source 1 set on the upper surface of the outer frame 9 is arranged. The methylene blue reagent layer 15 ′ is continuously irradiated with excitation light (ultraviolet light) radiated from the tip 1a through the light-transmitting plastic film 5 for a predetermined time (less than 1 hour), and the degree of decolorization of methylene blue is used as an index. The photocatalytic performance of the photocatalytic product 20 is measured and evaluated semi-quantitatively.

タイル−A20aは、従来の光触媒性能評価法(光触媒製品技術協議会が提案する、(1)光触媒性能評価試験法I(液相フィルム密着法)、(2)光触媒性能評価試験法IIa(ガスパックA法)、(3)光触媒性能評価試験法IIb(ガスパックB法))の全てにおいて光触媒性能を確認した1辺約10cmのタイルであり、タイル−B20bは、同評価試験法において光触媒性能を認めなかったタイルである。   Tile-A20a is a conventional photocatalyst performance evaluation method (proposed by the Photocatalyst Product Technical Council, (1) Photocatalyst performance evaluation test method I (liquid phase film adhesion method), (2) Photocatalyst performance evaluation test method IIa (gas pack) (Method A), (3) Photocatalyst performance evaluation test method IIb (gas pack B method)) is a tile having a side of about 10 cm, and the tile-B20b has photocatalytic performance in the evaluation test method. The tile was not recognized.

離けい紙7を剥がし取った貼着ラベル10の試薬保持部3(20μm(図4中のx)の防波堤2で構成された直径15mmの円盤状)の中に、メチレンブルー試薬15(10重量%ラウリル酸アミドプロピルベタイン含む終濃度10〜60ppmのメチレンブルー水溶液)を充填して、サンプルタイル(タイル−A)20aとブランクタイル(タイル−B)20bのそれぞれ3個所に密着した。   The methylene blue reagent 15 (10% by weight) is placed in the reagent holding part 3 of the adhesive label 10 from which the release paper 7 has been peeled off (a disk shape having a diameter of 15 mm composed of a breakwater 2 of 20 μm (x in FIG. 4)). A methylene blue aqueous solution having a final concentration of 10 to 60 ppm containing lauryl amidopropyl betaine) was filled and closely adhered to each of the sample tile (tile-A) 20a and the blank tile (tile-B) 20b.

ついで、図4に示すように、外枠9を介して上方5mm(図4中のy)に備えた励起光源1(日亜化学株式会社製の紫外線LED光源(ピーク波長:375nm)の先端部1aから放射させた紫外線を照射し(被照射面の紫外線強度:約100mW/cm2)、経時的に試薬層15’内の脱色の有無を目視判定した。 Next, as shown in FIG. 4, the tip of the excitation light source 1 (UV LED light source (peak wavelength: 375 nm) manufactured by Nichia Corporation) provided 5 mm above (y in FIG. 4) through the outer frame 9. Ultraviolet rays radiated from 1a were irradiated (UV intensity of irradiated surface: about 100 mW / cm 2 ), and the presence or absence of decoloration in the reagent layer 15 ′ was visually determined over time.

表1に結果を示す。
表1から、タイル−Aにあっては、界面活性剤が高濃度であったり、メチレンブルーが高濃度であると、脱色に要する照射時間が長くなることが解り、タイル−Bにあっては、いずれの検討条件においてもメチレンブルー色に変化が認められなかった。
Table 1 shows the results.
From Table 1, it can be seen that in tile-A, when the surfactant is at a high concentration or methylene blue is at a high concentration, the irradiation time required for decoloration is long, and in tile-B, Under any of the examination conditions, no change was observed in the methylene blue color.

Figure 2005069812
Figure 2005069812

また、同一タイルで部位の異なる3箇所および同質タイル3枚においても同様の結果が得られたことから(表示されていない)」、この方法は極めて再現性に優れた光触媒性能評価法であることが解った。   In addition, since the same result was obtained in three different locations and three homogeneous tiles in the same tile (not shown), this method is a photocatalytic performance evaluation method with extremely excellent reproducibility. I understand.

図1(a)は本発明に係る貼着ラベル10の平面図、図1(b)は図1(a)のA−A線に沿った部分拡大図である。Fig.1 (a) is a top view of the sticking label 10 which concerns on this invention, FIG.1 (b) is the elements on larger scale along the AA line of Fig.1 (a). 図2は光触媒製品に密着させるに際して貼着ラベルから離けい紙を取り外した状態を概略的に示す平面図である。FIG. 2 is a plan view schematically showing a state in which the release paper is removed from the sticking label when it is brought into close contact with the photocatalyst product. 図3はメチレンブルー試薬を分注している状態を模式的に示す要部断面図である。FIG. 3 is a main part sectional view schematically showing a state in which the methylene blue reagent is dispensed. 図4は紫外線を照射している状態を模式的に示す要部断面図である。FIG. 4 is a cross-sectional view of an essential part schematically showing a state in which ultraviolet rays are irradiated. 図5は光源試薬保持具の概略を示す要部断面図である。FIG. 5 is a cross-sectional view of an essential part showing an outline of the light source reagent holder.

符号の説明Explanation of symbols

1 … 励起光源(例えば紫外線LED光源)
1a … 先端部
2 … 防波堤
3 … 試薬保持部
4 … 貼着剤
5 … 光透過性プラスチックフィルム
7 … 離けい紙
9 … 外枠
10 … 貼着ラベル
15 … メチレンブルー試薬
15’ … 試薬層
20 … 光触媒製品
20a … タイル−A
20b … タイル−B
30 … 光源試薬保持具
31 … 試薬室
31a … 先端部
32 … 光源室
1 ... Excitation light source (for example, ultraviolet LED light source)
DESCRIPTION OF SYMBOLS 1a ... Tip part 2 ... Breakwater 3 ... Reagent holding part 4 ... Adhesive agent 5 ... Light-transmitting plastic film 7 ... Release paper 9 ... Outer frame 10 ... Adhesive label 15 ... Methylene blue reagent 15 '... Reagent layer 20 ... Photocatalyst Product 20a Tile-A
20b ... Tile-B
DESCRIPTION OF SYMBOLS 30 ... Light source reagent holder 31 ... Reagent chamber 31a ... Tip part 32 ... Light source chamber

Claims (7)

光触媒製品の光触媒性能を測定し評価する簡易評価法であって、
光透過性プラスチックフィルム上に備えたリング形状で膜厚10〜50μmの防波堤の内側に脱色色素試薬を収容し、光透過性プラスチックフィルムの防波堤を備えた面側を光触媒製品に面密着させ、ついで、励起光源から放射される励起光を、光透過性プラスチックフィルム側から前記防波堤内に向けて照射することにより色素を脱色させ、色素の脱色を指標にして光触媒性能を測定評価することを特徴とする光触媒性能簡易評価法。
A simple evaluation method for measuring and evaluating the photocatalytic performance of a photocatalytic product,
A decolorizing dye reagent is accommodated inside a breakwater having a film thickness of 10 to 50 μm in a ring shape provided on a light-transmitting plastic film, and the surface side of the light-transmitting plastic film with the breakwater is brought into surface contact with the photocatalyst product, Irradiating excitation light emitted from an excitation light source toward the breakwater from the light-transmitting plastic film side, and decolorizing the dye, and measuring and evaluating the photocatalytic performance using the decolorization of the dye as an index Simple evaluation method for photocatalytic performance.
前記脱色色素試薬が、0.1〜40重量%分散剤を含む終濃度10〜100ppmのメチレンブルー水溶液であるとともに、前記励起光源が紫外線光源であり前記防波堤内に紫外線強度0.5〜200mW/cm2の割合で照射させることを特徴とする請求項1に記載の光触媒性能簡易評価法。 The depigmenting dye reagent is a methylene blue aqueous solution having a final concentration of 10 to 100 ppm containing 0.1 to 40% by weight of a dispersant, the excitation light source is an ultraviolet light source, and an ultraviolet intensity of 0.5 to 200 mW / cm in the breakwater. The photocatalyst performance simple evaluation method according to claim 1, wherein irradiation is performed at a ratio of 2 . 光触媒の励起光源と、該光触媒の光触媒作用を検出する脱色色素試薬と、該脱色色素試薬が収容され光触媒製品に密着させる貼着ラベルとを含み構成された光触媒性能簡易評価キットであって、
前記貼着ラベルが、貼着剤にて剥離可能に備えられた離けい紙と、該離けい紙の上面に配され脱色色素試薬のはみ出しを防止するための防波堤と、前記防波堤の上面を被覆するとともに光触媒製品に密着させるに際し脱色色素試薬の支持基材となる光透過性プラスチックフィルムと、光触媒製品に密着させる貼着剤とを有することを特徴とする光触媒性能簡易評価キット。
A photocatalyst performance simple evaluation kit comprising an excitation light source of a photocatalyst, a decoloring dye reagent for detecting the photocatalytic action of the photocatalyst, and an adhesive label in which the decoloring dye reagent is accommodated and adhered to a photocatalyst product,
The adhesive label is provided with a release paper that can be peeled off by an adhesive, a breakwater that is disposed on the top surface of the release paper to prevent the decolorizing dye reagent from protruding, and covers the top surface of the breakwater In addition, a photocatalyst performance simple evaluation kit comprising: a light-transmitting plastic film that serves as a supporting base material for the decolorizing dye reagent when closely contacting the photocatalyst product; and a sticking agent that adheres to the photocatalyst product.
前記光触媒性能簡易評価キットにおいて、
前記励起光源が先端部から励起光を放射する光源室に収容され、脱色色素試薬が先端部から吐出させる試薬室に収容されており、前記光源室と試薬室が互いに背合わせ状態に連設されたペンシルタイプの光源試薬保持具として形成されていることを特徴とする請求項3記載の光触媒性能易評価キット。
In the photocatalyst performance simple evaluation kit,
The excitation light source is accommodated in a light source chamber that emits excitation light from the tip, and a decolorizing dye reagent is accommodated in a reagent chamber that is ejected from the tip, and the light source chamber and the reagent chamber are connected back to back. The photocatalyst performance evaluation kit according to claim 3, wherein the kit is formed as a pencil type light source reagent holder.
前記脱色色素試薬は0.1〜40重量%の分散剤を含む終濃度10〜100ppmのメチレンブルー水溶液であり、前記励起光源は前記防波堤内に対して紫外線強度0.5〜200mW/cm2の割合で照射可能な紫外線光源であることを特徴とする請求項3又は4記載の光触媒性能簡易評価キット。 The decoloring dye reagent is a methylene blue aqueous solution having a final concentration of 10 to 100 ppm containing 0.1 to 40% by weight of a dispersant, and the excitation light source has a UV intensity of 0.5 to 200 mW / cm 2 with respect to the breakwater. The simple evaluation kit for photocatalytic performance according to claim 3, wherein the kit is an ultraviolet light source that can be irradiated with a photocatalyst. 光触媒の励起光源を収容し先端部から励起光を放射させる光源室と、該光源室に背合わせ状態に連設され先端部から脱色色素試薬を吐出させる試薬室とを有しペンシルタイプに形成されていることを特徴とする光源試薬保持具。 It is formed in a pencil type having a light source chamber that houses the excitation light source of the photocatalyst and emits excitation light from the tip portion, and a reagent chamber that is connected back to back to the light source chamber and discharges the decolorizing dye reagent from the tip portion. A light source reagent holder. 貼着剤にて剥離可能に備えられた離けい紙と、該離けい紙の上面に配され色素脱色試薬がはみ出ないように防止する防波堤と、前記防波堤の上面を被覆するとともに光触媒製品に密着させるに際して脱色色素試薬の支持基材となる光透過性プラスチックフィルムとからなることを特徴とする貼着ラベル。 A release paper that can be peeled off by an adhesive, a breakwater that is disposed on the top surface of the release paper to prevent the dye decolorization reagent from protruding, and covers the top surface of the breakwater and adheres to the photocatalyst product. A sticking label comprising a light-transmitting plastic film that serves as a support base material for the decolorizing dye reagent.
JP2003298559A 2003-08-22 2003-08-22 Simple method and kit for photocatalyst performance assessment Pending JP2005069812A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077169A1 (en) * 2005-01-24 2006-07-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Measuring device and measuring method for measuring photocatalytic activity of a photocatalytic layer
JP2006329889A (en) * 2005-05-27 2006-12-07 Taiyo Kogyo Corp Evaluating method of decomposition activity of photocatalyst, and sample used for it
JP2007271335A (en) * 2006-03-30 2007-10-18 Chugoku Electric Power Co Inc:The Cod measuring system
DE102009043378A1 (en) * 2009-08-13 2011-03-03 Technische Universität Braunschweig Method and use of luminescent compounds for measuring a photocatalytic surface activity
JP2011224520A (en) * 2010-04-23 2011-11-10 Catarise Corp Method of carrying catalyst, base material for carrying catalyst, and kit for preparing liquid for carrying catalyst
JP4896998B2 (en) * 2006-03-10 2012-03-14 ユニリーバー・ナームローゼ・ベンノートシヤープ Evaluation method of surfactant adsorption on skin
JP2017177036A (en) * 2016-03-31 2017-10-05 太陽工業株式会社 Activity evaluation method of photocatalyst, and photocatalyst product
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077169A1 (en) * 2005-01-24 2006-07-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Measuring device and measuring method for measuring photocatalytic activity of a photocatalytic layer
JP2006329889A (en) * 2005-05-27 2006-12-07 Taiyo Kogyo Corp Evaluating method of decomposition activity of photocatalyst, and sample used for it
JP4646701B2 (en) * 2005-05-27 2011-03-09 太陽工業株式会社 Evaluation method of photocatalytic degradation activity and sample used therefor
JP4896998B2 (en) * 2006-03-10 2012-03-14 ユニリーバー・ナームローゼ・ベンノートシヤープ Evaluation method of surfactant adsorption on skin
JP2007271335A (en) * 2006-03-30 2007-10-18 Chugoku Electric Power Co Inc:The Cod measuring system
DE102009043378A1 (en) * 2009-08-13 2011-03-03 Technische Universität Braunschweig Method and use of luminescent compounds for measuring a photocatalytic surface activity
DE102009043378B4 (en) * 2009-08-13 2011-04-07 Technische Universität Braunschweig Method and use of luminescent compounds for measuring a photocatalytic surface activity
JP2011224520A (en) * 2010-04-23 2011-11-10 Catarise Corp Method of carrying catalyst, base material for carrying catalyst, and kit for preparing liquid for carrying catalyst
JP2017177036A (en) * 2016-03-31 2017-10-05 太陽工業株式会社 Activity evaluation method of photocatalyst, and photocatalyst product
KR20200113136A (en) * 2019-03-22 2020-10-06 (주)벤텍프런티어 Test Apparatus for air-purification performance of Photocatalytic Materials and Test Method thereof
KR102258156B1 (en) 2019-03-22 2021-06-01 (주)벤텍프런티어 Test Apparatus for air-purification performance of Photocatalytic Materials and Test Method thereof

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