JP4591920B2 - 光触媒体及びその製造方法 - Google Patents
光触媒体及びその製造方法 Download PDFInfo
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- JP4591920B2 JP4591920B2 JP2004339958A JP2004339958A JP4591920B2 JP 4591920 B2 JP4591920 B2 JP 4591920B2 JP 2004339958 A JP2004339958 A JP 2004339958A JP 2004339958 A JP2004339958 A JP 2004339958A JP 4591920 B2 JP4591920 B2 JP 4591920B2
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- 239000011941 photocatalyst Substances 0.000 title claims description 68
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 239000010419 fine particle Substances 0.000 claims description 31
- 239000006185 dispersion Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 22
- 229910052709 silver Inorganic materials 0.000 claims description 21
- 239000004332 silver Substances 0.000 claims description 21
- 239000002923 metal particle Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 14
- -1 silver ions Chemical class 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-L L-tartrate(2-) Chemical compound [O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O FEWJPZIEWOKRBE-JCYAYHJZSA-L 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims description 2
- BJEPYKJPYRNKOW-UWTATZPHSA-M malate ion Chemical compound [O-]C(=O)[C@H](O)CC(O)=O BJEPYKJPYRNKOW-UWTATZPHSA-M 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000000084 colloidal system Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910002089 NOx Inorganic materials 0.000 description 3
- 239000010946 fine silver Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910001111 Fine metal Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical group O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- POZPMIFKBAEGSS-UHFFFAOYSA-K trisodium;2-hydroxypropane-1,2,3-tricarboxylate;trihydrate Chemical compound O.O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O POZPMIFKBAEGSS-UHFFFAOYSA-K 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/60—Platinum group metals with zinc, cadmium or mercury
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/104—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- 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
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Description
まず、金属微粒子、例えば、銀イオン(水に可溶な銀塩)を含有する水溶液を、鉄イオンとヒドロキシ酸イオンとを含有する水溶液に加えて還元させて、金属微粒子分散液(金属コロイド分散液)、例えば、銀微粒子分散液(銀コロイド分散液)を調合する。この例の銀は、光触媒体が担持する金属微粒子となるものである。また、ヒドロキシ酸イオンは、酒石酸イオン、リンゴ酸イオン及びクエン酸イオンのうちの少なくとも一種類以上を用いることができる。
次に、光触媒体の粉末の水分散液に、第1工程で調合した金属微粒子分散液を添加して混合分散液とする。金属微粒子を担持する光触媒体の粉末としては、例えば、酸化チタン、酸化亜鉛などの金属酸化物を用いることができるが、これらは、一般に市販のものでもゾルゲル法などで作成したものでもよい。
最後に、第2工程で調合した混合分散液を加熱乾燥して、金属微粒子が担持された光触媒体を完成する。この加熱乾燥においては、その加熱温度を80℃〜250℃の範囲内のいずれかの温度とすることが望ましい。
クエン酸ナトリウム3水和物(関東化学製)10.5gと、硫酸鉄7水和物(関東化学製)5.6gを純水40mlに溶かした。この溶液に硝酸銀(関東化学製)19gを純水20mlに溶かした水溶液を添加して、黒褐色の銀コロイド分散液を得た。この溶液を遠心分離にかけて上澄み液を除き、さらに純水で希釈して43ppmの銀コロイド分散液とした。なお、銀の含有量はlCP発光分光分析により行なった。
酸化亜鉛粉末(関東化学製の純度99.95%のもの)10部を純水100部に分散させ、前述の43ppmの銀コロイド分散液を25部添加し、攪拌して混合分散液とした。この分散液を磁性皿に移し、ホットプレートにより加熱温度150℃で水を蒸発させた。その後、銀が担持した光触媒体の粉末を乳鉢で粉砕して、0.01wt%の銀微粒子が担持した酸化亜鉛の光触媒体粉末を作成した。
前述の43ppmの銀コロイド分散液の添加量を50部にして、O.02wt%の銀微粒子が担持した酸化亜鉛の光触媒体を作成した以外は、実施例1の場合と同様である。
酸化チタン粉末(純正化学製の純度99.O%のもの)10部を純水100部に分散させ、前述の43ppmの銀コロイド分散液を25部添加して、撹絆して混合分散液とした。この分散液を磁性皿に移し、ホットプレートにより加熱温度150℃で水を蒸発させた。その後、銀が担持した光触媒体の粉末を乳鉢で粉砕して、0.01wt%の銀微粒子が担持した酸化亜鉛の光触媒体粉末を作成した。
前述の43ppmの銀コロイド分散液の添加重を50部にして、0.02wt%の銀微粒子を担持した酸化チタンの光触媒体を作成した以外は、比較例3の場合と同様である。
酸化亜鉛粉末(関東化学製の純度99.95%のもの)をそのまま使用した。
酸化チタン粉末(純正化学製の純度99.0%のもの)をそのまま使用した。
以上のような実施例1〜2及び比較例3,4,1,2の光触媒体を一酸化窒素(NO)の分解除去試験で評価した。この評価としては図1に示すような流通系反応装置1を用いて行なった。この流通系反応装置1は、実施例1〜2又は比較例3,4,1,2の光触媒体Sを収納する管径20mmの石英ガラス管2と、この石英ガラス管2内に収納した光触媒体Sに石英ガラス管2の外から紫外線Lを照射するUV光源3とから構成される。石英ガラス管2の一方からはNOガスが流入され、光触媒体Sを通過して他方から排出されるが、この排出ガスは、図示しないNOx濃度計でNO濃度の検出がされる。
Claims (3)
- 金属粒子が担持されている光触媒体を製造する光触媒体の製造方法において、
前記金属粒子が分散した金属粒子分散液を調合する工程と、
光触媒体の粉末の分散液に前記調合された金属粒子分散液を添加して混合分散液とする工程と、
前記混合分散液を乾燥して前記金属微粒子が担持された光触媒体とする工程と、
を含み、
前記金属粒子は銀であり、
前記光触媒体は酸化亜鉛であり、
前記金属粒子分散液の調合は、銀イオンを含有する溶液を、鉄イオンとヒドロキシ酸イオンとを含有する溶液に加えて行なう、
ことを特徴とする光触媒体の製造方法。 - 前記ヒドロキシ酸イオンは、酒石酸イオン、リンゴ酸イオン及びクエン酸イオンのうちの少なくとも一種類以上である、ことを特徴とする請求項1に記載の光触媒体の製造方法。
- 請求項1又は2記載の光触媒体の製造方法によって製造された、ことを特徴とする光触媒体。
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JP2004339958A JP4591920B2 (ja) | 2004-04-06 | 2004-11-25 | 光触媒体及びその製造方法 |
DE102005010012.0A DE102005010012B4 (de) | 2004-04-06 | 2005-03-04 | Verfahren zur Herstellung eines Photokatalysators |
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JP2004111815 | 2004-04-06 | ||
JP2004339958A JP4591920B2 (ja) | 2004-04-06 | 2004-11-25 | 光触媒体及びその製造方法 |
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JP4591920B2 true JP4591920B2 (ja) | 2010-12-01 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4923571B2 (ja) * | 2005-12-27 | 2012-04-25 | 東洋紡績株式会社 | アルデヒド類ガス除去剤 |
JP5037836B2 (ja) * | 2006-03-01 | 2012-10-03 | 東北リコー株式会社 | 光触媒材料 |
CN100427204C (zh) * | 2006-11-30 | 2008-10-22 | 华南理工大学 | 一种具有可见光活性的银敏化氧化锌光催化剂制备方法 |
KR100862754B1 (ko) | 2008-04-21 | 2008-10-10 | 문강인 | 광촉매필터 제조방법 및 그 광촉매필터 및 광촉매필터를이용한 자외선램프 |
CN109012154A (zh) * | 2018-08-04 | 2018-12-18 | 安徽科浦环保科技有限公司 | 一种改性茶渣甲醛吸附剂的制备方法 |
US10981102B2 (en) | 2018-10-17 | 2021-04-20 | The Boeing Company | Aircraft air purification and volatile organic compounds reduction unit |
KR102146291B1 (ko) * | 2019-07-24 | 2020-08-21 | (주)엘지하우시스 | 촉매 제조장치 |
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JP2002210364A (ja) * | 2000-11-16 | 2002-07-30 | C Uyemura & Co Ltd | 光触媒性を有する酸化亜鉛皮膜及びその形成方法 |
JP2003024785A (ja) * | 2001-07-18 | 2003-01-28 | Osaka City | 光触媒性を有する酸化亜鉛皮膜及びその形成方法 |
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JPH0687979B2 (ja) * | 1990-05-16 | 1994-11-09 | 工業技術院長 | 微細な金属担持光触媒の製造方法 |
JPH09227319A (ja) * | 1995-12-21 | 1997-09-02 | Ishihara Sangyo Kaisha Ltd | 抗菌性粉末およびその製造方法 |
JPH11179205A (ja) * | 1997-12-19 | 1999-07-06 | Mitsui Mining & Smelting Co Ltd | 貴金属担持光触媒体及びその製造方法 |
JP2002210364A (ja) * | 2000-11-16 | 2002-07-30 | C Uyemura & Co Ltd | 光触媒性を有する酸化亜鉛皮膜及びその形成方法 |
JP2003024785A (ja) * | 2001-07-18 | 2003-01-28 | Osaka City | 光触媒性を有する酸化亜鉛皮膜及びその形成方法 |
JP2003327920A (ja) * | 2002-03-07 | 2003-11-19 | Ishihara Sangyo Kaisha Ltd | 導電性塗料及びそれを用いた導電性塗膜の形成方法並びに導電性塗膜、導電性塗膜を有する部材 |
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