JPWO2006070554A1 - 光触媒活性評価方法及び光触媒活性評価装置 - Google Patents
光触媒活性評価方法及び光触媒活性評価装置 Download PDFInfo
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 43
- 238000011156 evaluation Methods 0.000 title claims description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
- 239000004065 semiconductor Substances 0.000 claims abstract description 21
- HWYHZTIRURJOHG-UHFFFAOYSA-N luminol Chemical compound O=C1NNC(=O)C2=C1C(N)=CC=C2 HWYHZTIRURJOHG-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 5
- -1 superoxide ions Chemical class 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003642 reactive oxygen metabolite Substances 0.000 claims 1
- 229910010413 TiO 2 Inorganic materials 0.000 abstract description 12
- 238000013032 photocatalytic reaction Methods 0.000 abstract description 11
- 239000006185 dispersion Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 239000011941 photocatalyst Substances 0.000 description 16
- 239000004408 titanium dioxide Substances 0.000 description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000004566 IR spectroscopy Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 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 description 1
- 229910002370 SrTiO3 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/10—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using catalysis
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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
- 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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Abstract
Description
(1)本発明に係る金属酸化物半導体の光触媒活性評価方法は、評価対象の金属酸化物半導体とルミノールを含む溶液にパルスレーザーを照射し、発生する活性酸素とルミノールとの反応に伴う化学発光信号強度に基づいて、活性酸素発生量を求めることにより光触媒活性を評価することを特徴とする。
(2)本発明に係る金属酸化物半導体の光触媒活性評価装置は、評価対象の金属酸化物半導体とルミノールを含む溶液を収めた光学セルと、該光学セルにパルスレーザーを照射する手段と、前記パルスレーザーの光軸とほぼ直角方向に置かれ、パルスレーザー照射による前記溶液からの発光を検出して化学発光信号強度を取得する化学発光信号強度取得手段と、化学発光信号強度データに基づいて活性酸素発生量を演算する手段と、を備えて成ることを特徴とする。
(3)また、本発明に係る金属酸化物半導体の有機物に対する分解活性評価方法は、有機物とルミノールとを含む溶液にパルスレーザーを照射し、有機物の光触媒反応により発生した活性酸素との分解反応に伴うルミノールの時間分解化学発光信号強度を求め、このデータと上述の各方法による発生活性酸素種とルミノールとの反応に伴う時間分解化学発光信号強度とを比較することを特徴とする。
2 レーザー照射装置
3 分散プリズム
4a〜4c 集光レンズ
5 光学セル
6 ノッチフィルタ
7 分光器
8 光電子増倍管(PMT)
9 デジタルオシロスコープ
Claims (11)
- 金属酸化物半導体とルミノールを含む溶液にパルスレーザーを照射し、発生する活性酸素種とルミノールとの反応に伴う時間分解化学発光信号強度に基づいて、短寿命活性酸素発生量を求めることにより光触媒活性を評価することを特徴とする金属酸化物半導体の光触媒活性評価方法。
- 前記パルスレーザーが波長400nm以下のパルスレーザーであり、かつ、前記化学発光信号強度は、レーザー照射後10ms以内のデータを用いることを特徴とする請求項1に記載の光触媒活性評価方法。
- 前記金属酸化物半導体が、二酸化チタン(TiO2)又は酸化亜鉛(ZnO)のいずれかであることを特徴とする請求項1又は2に記載の光触媒活性評価方法。
- 前記短寿命活性酸素が、主としてOHラジカル若しくはスーパーオキシドイオンのいずれか一方、又は両方であることを特徴とする請求項1乃至3に記載の光触媒活性評価方法。
- 前記化学発光信号強度の最大値に基づいて光触媒活性度を評価することを特徴とする請求項1乃至4に記載の光触媒活性評価方法。
- 前記化学発光信号強度の30μs〜10msまでの積分値に基づいて光触媒活性度を評価することを特徴とする請求項1乃至4に記載の光触媒活性評価方法。
- 評価対象の金属酸化物半導体とルミノールを含む溶液を収めた光学セルと、該光学セルにパルスレーザーを照射する手段と、パルスレーザー照射による前記溶液からの発光を検出して化学発光信号を取得する化学発光信号取得手段と、化学発光信号強度に基づいて活性酸素発生量を演算する手段と、を備えて成ることを特徴とする光触媒活性評価装置。
- 前記光学セルと前記化学発光信号強度取得手段の経路中に、さらに、レーザー散乱光除去手段を備えて成ることを特徴とする請求項7に記載の光触媒活性評価装置。
- 前記レーザー散乱光除去手段が、ノッチフィルタであることを特徴とする請求項7又は8に記載の光触媒活性評価装置。
- 前記光学セルと発光検出手段の経路中に、さらに分光器又はフィルタを配置して成ることを特徴とする請求項7乃至9に記載の光触媒活性評価装置。
- 有機物とルミノールとを含む溶液にパルスレーザーを照射し、有機物の光触媒分解反応に伴うルミノールの時間分解化学発光信号強度を求め、このデータと請求項1乃至6の方法による発生活性酸素種とルミノールとの反応に伴う時間分解化学発光信号強度とを比較することにより、前記金属酸化物半導体の前記有機物に対する分解活性を評価することを特徴とする光触媒活性評価方法。
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JP2004375514 | 2004-12-27 | ||
JP2004375514 | 2004-12-27 | ||
PCT/JP2005/021914 WO2006070554A1 (ja) | 2004-12-27 | 2005-11-29 | 光触媒活性評価方法及び光触媒活性評価装置 |
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JPWO2006070554A1 true JPWO2006070554A1 (ja) | 2008-06-12 |
JP4422147B2 JP4422147B2 (ja) | 2010-02-24 |
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CN101655449A (zh) * | 2008-08-20 | 2010-02-24 | 鸿富锦精密工业(深圳)有限公司 | 光触媒催化性能的测量装置 |
CN103954612B (zh) * | 2014-04-18 | 2016-06-15 | 中国科学院生态环境研究中心 | 光催化反应产生超氧自由基的实时动态检测系统 |
KR102088244B1 (ko) | 2018-02-05 | 2020-03-12 | 고려대학교 산학협력단 | 무전력 화학물질 감지센서 및 센싱방법 |
KR102602624B1 (ko) * | 2020-11-30 | 2023-11-16 | 한양대학교 산학협력단 | 반응성 산소종의 거동평가를 위한 화학발광분석 장치 및 이를 이용한 화학발광분석법 |
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JP4742378B2 (ja) * | 2001-02-01 | 2011-08-10 | 独立行政法人 日本原子力研究開発機構 | 光触媒の酸化分解活性を評価する方法と装置 |
JP2002323484A (ja) * | 2001-04-24 | 2002-11-08 | Matsushita Electric Works Ltd | 光触媒塗膜の光触媒性評価方法及び光触媒性評価器具 |
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