JP4986149B2 - 可視光応答性光触媒と環境汚染物質の光分解法 - Google Patents
可視光応答性光触媒と環境汚染物質の光分解法 Download PDFInfo
- Publication number
- JP4986149B2 JP4986149B2 JP2007233222A JP2007233222A JP4986149B2 JP 4986149 B2 JP4986149 B2 JP 4986149B2 JP 2007233222 A JP2007233222 A JP 2007233222A JP 2007233222 A JP2007233222 A JP 2007233222A JP 4986149 B2 JP4986149 B2 JP 4986149B2
- Authority
- JP
- Japan
- Prior art keywords
- visible light
- responsive photocatalyst
- light responsive
- compound
- photocatalyst
- 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.)
- Active
Links
- 239000011941 photocatalyst Substances 0.000 title claims description 74
- 239000003344 environmental pollutant Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title description 21
- 238000001782 photodegradation Methods 0.000 title description 4
- 239000000843 powder Substances 0.000 claims description 29
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 18
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 18
- 238000000354 decomposition reaction Methods 0.000 claims description 13
- 239000010409 thin film Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 5
- 150000002941 palladium compounds Chemical class 0.000 claims description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 78
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 52
- 150000001875 compounds Chemical class 0.000 description 38
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 30
- 239000001569 carbon dioxide Substances 0.000 description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 description 26
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 24
- 239000004065 semiconductor Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 150000001299 aldehydes Chemical class 0.000 description 12
- 230000001699 photocatalysis Effects 0.000 description 12
- 150000001735 carboxylic acids Chemical class 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000543 intermediate Substances 0.000 description 8
- 238000011068 loading method Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 7
- 239000010937 tungsten Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 238000002256 photodeposition Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- 150000001491 aromatic compounds Chemical class 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 5
- 238000006303 photolysis reaction Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 150000003658 tungsten compounds Chemical class 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229910002673 PdOx Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 oxide Inorganic materials 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 230000015843 photosynthesis, light reaction Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005749 Copper compound Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 101150003085 Pdcl gene Proteins 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001880 copper compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 150000003058 platinum compounds Chemical class 0.000 description 1
- 150000003304 ruthenium compounds Chemical class 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
〈1〉500ppm以上の高濃度の環境汚染物質分解用の可視光応答性光触媒であって、
酸化タングステンにパラジウム化合物が混練法ないしは湿式調製法により担持されていることを特徴とする可視光応答性光触媒。
〈2〉粉末状又は多孔質薄膜状であることを特徴とする〈1〉に記載の可視光応答性光触媒。
〈3〉〈1〉又は〈2〉に記載の可視光応答性光触媒を使用して、500ppm以上の高濃度の環境汚染物質を分解することを特徴とする環境汚染物質の光分解法。
半導体具体例は、WOx(X≦3)、WyMo1-yOx(x≦3、y≦1)、Bi2WO6などが例示される。その中でも、酸化タングステンが特に好ましい。
これに対して、特許文献1の比較例7のような、スパッタ法によりPdをWO3膜上に付着させたものでは、環境汚染物質たとえばアセトアルデヒドは酢酸などの中間生成物に酸化されるだけで、完全に二酸化炭素まで酸化されない。この理由は定かではないが、スパッタ法では半導体薄膜の一方側にPdが堆積するだけで、半導体表面に均一にPd担持することができないことによるものと考えている。
その一つはPd化合物と可視光応答性光触媒を混合するものである。この場合、典型的には、それぞれの粉末を適宜の量をとり乳鉢やボールミル等を用いてよく粉砕・混合し、そのままの粉末状もしくは薄膜形状などに成形して光触媒として用いる。この態様のものは単に混合するだけなので様々な種類のPd化合物と可視光応答性光触媒を共存させることができる。
本発明に係る可視光応答性光触媒は、この中でもカルボン酸類やアルデヒド類、芳香族化合物に対して特に有効である。また、環境汚染物質としては、有機物だけでなくNOxやCOなどの無機物も含まれる。
酸化タングステン粉末(高純度化学、99.99%)にPd粉末(和光純薬工業、99.9%)を2重量%加えて乳鉢を用いてよく粉砕・混合して本発明の可視光応答性光触媒粉末を作製した。
この光触媒を4.4mlのバイアルびんにおよそ153mg入れ、これにアセトアルデヒドの気体を9000ppm分加えて、300WのXeランプで光照射し、ガスクロマトグラフィーにより光分解で生じる二酸化炭素の量の時間変化をモニターした。
また比較例1として酸化タングステン粉末のみを用いて同様の実験を行った。図1に結果を示す。なお、本例では、存在するアセトアルデヒドが完全に二酸化炭素にまで分解するとおよそ18000ppmの二酸化炭素が理論的に発生する。
酸化タングステン粉末(高純度化学、99.99%)に(NH3)4PdCl2の水溶液をPdとして0.1〜0.001重量%加えて含浸し、300度焼成して本発明の可視光応答性光触媒粉末を作製した。パラジウムはWO3上でPdまたはPdOxの状態になって担持されていると考えられる。
この光触媒を4.4mlのバイアルびんにおよそ153mg入れ、これに芳香族化合物の代表として一般的であるトルエンの液体を2μL分加えて、300WのXeランプで光照射し、ガスクロマトグラフィーにより光分解で生じる二酸化炭素の量の時間変化をモニターした。また比較例2として酸化タングステン粉末のみを用いて同様の実験を行った。図2に二酸化炭素発生の経時変化の結果を示す。
酸化タングステン粉末(高純度化学、99.99%)を(NH3)4PdCl2の水溶液(Pdとして0.01重量%溶解)にマグネティックスターラーで懸濁し、24時間300WXeランプで光照射して、パラジウムを光電着し、その後に濾過・洗浄・乾燥して本発明の可視光応答性光触媒粉末を作製した。パラジウムはWO3上で主にPdメタル状態になって担持されていると考えられる。
この光触媒を4.4mlのバイアルびんにおよそ153mg入れ、これに芳香族化合物の代表としてトルエンの液体を2μL分加えて、300WのXeランプで光照射し、ガスクロマトグラフィーにより光分解で生じる二酸化炭素の量の時間変化をモニターした。
Claims (3)
- 500ppm以上の高濃度の環境汚染物質分解用の可視光応答性光触媒であって、
酸化タングステンにパラジウム化合物が混練法ないしは湿式調製法により担持されていることを特徴とする可視光応答性光触媒。 - 粉末状又は多孔質薄膜状であることを特徴とする請求項1に記載の可視光応答性光触媒。
- 請求項1又は2に記載の可視光応答性光触媒を使用して、500ppm以上の高濃度の環境汚染物質を分解することを特徴とする環境汚染物質の光分解法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007233222A JP4986149B2 (ja) | 2007-09-07 | 2007-09-07 | 可視光応答性光触媒と環境汚染物質の光分解法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007233222A JP4986149B2 (ja) | 2007-09-07 | 2007-09-07 | 可視光応答性光触媒と環境汚染物質の光分解法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011277475A Division JP5464450B2 (ja) | 2011-12-19 | 2011-12-19 | 可視光応答性光触媒と環境汚染物質の光分解法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009061426A JP2009061426A (ja) | 2009-03-26 |
JP4986149B2 true JP4986149B2 (ja) | 2012-07-25 |
Family
ID=40556523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007233222A Active JP4986149B2 (ja) | 2007-09-07 | 2007-09-07 | 可視光応答性光触媒と環境汚染物質の光分解法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4986149B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011092797A (ja) * | 2009-10-01 | 2011-05-12 | Sumitomo Chemical Co Ltd | 親水化剤、その製造方法および親水性機能製品 |
KR101375677B1 (ko) | 2010-02-16 | 2014-03-19 | 쇼와 덴코 가부시키가이샤 | 구리 이온으로 수식된 산화 텅스텐 광촉매 및 그 제조방법 |
WO2011159318A1 (en) | 2010-06-18 | 2011-12-22 | Empire Technology Development Llc | Sensor including a photocatalyst |
JP5464450B2 (ja) * | 2011-12-19 | 2014-04-09 | 独立行政法人産業技術総合研究所 | 可視光応答性光触媒と環境汚染物質の光分解法 |
KR101450389B1 (ko) * | 2012-05-25 | 2014-10-14 | (주)엘지하우시스 | 광촉매재, 그 제조 방법 및 광촉매 장치 |
CN103406152B (zh) * | 2013-07-22 | 2015-08-12 | 曾适之 | 可见光响应的金属/有机半导体光催化剂及其制备方法与应用 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01238868A (ja) * | 1988-03-18 | 1989-09-25 | Matsushita Electric Ind Co Ltd | 光触媒による脱臭方法 |
JP3887510B2 (ja) * | 1999-07-28 | 2007-02-28 | シャープ株式会社 | 光触媒膜及びその製造方法 |
JP2001070800A (ja) * | 1999-09-07 | 2001-03-21 | Sharp Corp | 光触媒膜組成物及びこれを用いた光触媒体 |
JP4883912B2 (ja) * | 2005-01-18 | 2012-02-22 | 株式会社日本触媒 | 可視光応答型光触媒およびその製造方法 |
-
2007
- 2007-09-07 JP JP2007233222A patent/JP4986149B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2009061426A (ja) | 2009-03-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Liu et al. | Catalytic ozonation of VOCs at low temperature: A comprehensive review | |
Yang et al. | Confinement and synergy effect of bimetallic Pt-Mn nanoparticles encapsulated in ZSM-5 zeolite with superior performance for acetone catalytic oxidation | |
Descorme | Catalytic wastewater treatment: Oxidation and reduction processes. Recent studies on chlorophenols | |
JP5578593B2 (ja) | 可視光応答性光触媒とその触媒活性促進剤並びに環境汚染有機物質の光分解法 | |
Lin et al. | Comparative investigation on chlorobenzene oxidation by oxygen and ozone over a MnO x/Al2O3 catalyst in the presence of SO2 | |
Ji et al. | Recent advances in visible light-responsive titanium oxide-based photocatalysts | |
JP6486360B2 (ja) | 一酸化炭素及び/又は揮発性有機化合物の酸化触媒 | |
Palmisano et al. | Advances in selective conversions by heterogeneous photocatalysis | |
JP4986149B2 (ja) | 可視光応答性光触媒と環境汚染物質の光分解法 | |
Arai et al. | Complete oxidation of acetaldehyde and toluene over a Pd/WO 3 photocatalyst under fluorescent-or visible-light irradiation | |
JPWO2006103754A1 (ja) | アンモニア分解触媒および該触媒を用いたアンモニア分解方法 | |
Murindababisha et al. | Current progress on catalytic oxidation of toluene: a review | |
Maldotti et al. | Design of heterogeneous photocatalysts based on metal oxides to control the selectivity of chemical reactions | |
CN108816233A (zh) | 一种用于苯催化氧化的铜钴复合氧化物催化剂的制备方法 | |
Kute et al. | A review on the synthesis and applications of sustainable copper-based nanomaterials | |
JP2007229559A (ja) | エチレン分解触媒 | |
Que et al. | Application of silver nanoparticles for water treatment | |
Yang et al. | Opportunities and challenges in aqueous nitrate and nitrite reduction beyond electrocatalysis | |
WO2018123786A1 (ja) | 低温酸化触媒 | |
Bathla et al. | Removal of gaseous formaldehyde by portable photocatalytic air purifier equipped with bimetallic Pt@ Cu-TiO2 filter | |
JP5464450B2 (ja) | 可視光応答性光触媒と環境汚染物質の光分解法 | |
Li et al. | High-yield synthesis of Ce modified Fe–Mn composite oxides benefitting from catalytic destruction of chlorobenzene | |
JP2003019437A (ja) | 光触媒およびこれを用いた水素の製造方法ならびに有害物質の分解方法 | |
Choi et al. | Pt-V 2 O 5-WO 3/TiO 2 catalysts supported on SiC filter for NO reduction at low temperature | |
Augugliaro et al. | TiO2-based photocatalysis for organic synthesis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20100317 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20111011 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111018 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20111219 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120417 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120419 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4986149 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150511 Year of fee payment: 3 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |