WO2006090631A1 - 多機能材 - Google Patents
多機能材 Download PDFInfo
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- WO2006090631A1 WO2006090631A1 PCT/JP2006/302709 JP2006302709W WO2006090631A1 WO 2006090631 A1 WO2006090631 A1 WO 2006090631A1 JP 2006302709 W JP2006302709 W JP 2006302709W WO 2006090631 A1 WO2006090631 A1 WO 2006090631A1
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- Prior art keywords
- titanium
- protrusions
- fine
- exposed
- layer
- Prior art date
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- 239000007777 multifunctional material Substances 0.000 title claims abstract description 34
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 60
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010409 thin film Substances 0.000 claims abstract description 25
- 239000011941 photocatalyst Substances 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010936 titanium Substances 0.000 claims description 68
- 229910052719 titanium Inorganic materials 0.000 claims description 64
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 49
- 239000002253 acid Substances 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 10
- 230000001699 photocatalysis Effects 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 55
- 239000000758 substrate Substances 0.000 description 29
- 239000002344 surface layer Substances 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 19
- 239000013078 crystal Substances 0.000 description 18
- 239000010408 film Substances 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 13
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 11
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000011162 core material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000008646 thermal stress Effects 0.000 description 5
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000003373 anti-fouling effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000035882 stress Effects 0.000 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 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229960000907 methylthioninium chloride Drugs 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 150000003609 titanium compounds Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- -1 acetylene Chemical class 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 101100258086 Postia placenta (strain ATCC 44394 / Madison 698-R) STS-01 gene Proteins 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
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- B01J35/39—
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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
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0211—Compounds of Ti, Zr, Hf
-
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
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- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28095—Shape or type of pores, voids, channels, ducts
- B01J20/28097—Shape or type of pores, voids, channels, ducts being coated, filled or plugged with specific compounds
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
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- B01J35/60—
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/349—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of flames, plasmas or lasers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
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- B01D2255/20—Metals or compounds thereof
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- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- 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
- B01J21/066—Zirconium or hafnium; Oxides or hydroxides thereof
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/20—Vanadium, niobium or tantalum
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0225—Coating of metal substrates
- B01J37/0226—Oxidation of the substrate, e.g. anodisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
- Y10T428/24413—Metal or metal compound
Definitions
- the present invention relates to a multifunctional material, and more specifically, at least a portion of the surface portion has a large number of protrusions that can also be used as an acid or titanium alloy, so that it is a volatile organic material.
- the compound (VOC) can be easily adsorbed, has a large surface area and is carbon-doped, so it has high activity as a photocatalyst, functions as a visible light responsive photocatalyst, and has high hardness. Relates to a multifunctional material excellent in heat resistance, chemical resistance and heat resistance.
- titanium dioxide TiO 2 (this specification, claims)
- a crystal nucleus produced by various manufacturing methods such as a CVD method or a PVD method is placed in a sol solution composed of an inorganic metal compound or an organometallic compound to grow a titanium oxide crystal from the crystal nucleus.
- a sol solution to the crystal nucleus, solidifying it, and heat-treating it to grow an acid titanium crystal from the crystal nucleus, the crystal shape of the acid titanium crystal grown from the crystal nucleus is columnar. Since it becomes a crystal, a highly active photocatalytic function can be obtained. It is known (for example, see Patent Documents 6 to 8).
- the acid-titanium photocatalyst doped with other elements as described above includes a titanium compound obtained by substituting the oxygen site of titanium oxide with an atom such as nitrogen, and an inter-lattice crystal of acid-titanium
- a photocatalyst comprising a titanium compound in which atoms such as nitrogen are doped, or a titanium compound in which atoms such as nitrogen are arranged at the grain boundaries of a polycrystalline aggregate of titanium oxide crystals has been proposed (for example, see Patent Documents 9 to 12).
- photocatalysts are not always satisfactory in terms of durability such as wear resistance.
- Patent Document 1 Japanese Patent Application Laid-Open No. 09-241038
- Patent Document 2 Japanese Patent Application Laid-Open No. 09-262481
- Patent Document 3 Japanese Patent Application Laid-Open No. 10-053437
- Patent Document 4 Japanese Patent Application Laid-Open No. 11-012720
- Patent Document 5 Japanese Patent Laid-Open No. 2001-205105
- Patent Document 7 JP 2002-370027 A
- Patent Document 8 JP 2002-370034 A
- Patent Document 9 Japanese Patent Laid-Open No. 2001-205205
- Patent Document 10 Japanese Patent Laid-Open No. 2001-205094
- Patent Document 11 Japanese Patent Laid-Open No. 2002-95976
- Patent Document 12 Pamphlet of International Publication No. 01Z10553
- Non-Patent Document 1 A. Fujishima et al., J. Electrochem. Soc. Vol. 122, No. 11, p. 1487—1 489, November 1975
- Non-Patent Document 2 R. Asahi et al., SCIENCE Vol. 293, July 13, 2001, p. 269-271 Disclosure of the Invention
- the present invention can easily adsorb VOC, has a large surface area and is carbon-doped, and therefore has high activity as a photocatalyst, functions as a visible light responsive photocatalyst, and has high peel resistance,
- the purpose is to provide multifunctional materials with excellent wear resistance, chemical resistance, and heat resistance.
- the present inventor has found that at least the surface layer is unsaturated carbonized on the surface of the substrate made of titanium, titanium oxide, titanium alloy, or titanium alloy oxide.
- the power to heat-treat under specific conditions by directly applying a flame of hydrogen, particularly acetylene, or the surface of the substrate is heat-treated in an exhaust gas atmosphere of an unsaturated hydrocarbon, especially acetylene, under specific conditions, A layer in which fine columns of acid titanium or titanium alloy acid strength are formed is formed inside the surface layer, and the layer in which the fine columns are formed is cut in a direction along the surface layer.
- a member in which a layer in which fine columns that also have an acid strength of the titanium oxide or titanium alloy are exposed is exposed on at least a part of the substrate, and a titanium oxide or titanium alloy on the thin film Numerous reams
- a narrow protrusion and a member in which a fine column standing on the protrusion is exposed, that is, both of them are formed on at least a part of the surface with titanium oxide or titanium alloy oxide.
- the titanium oxide or titanium alloy is a fine column that is a protrusion that has physical strength, a continuous narrow width Since the protrusion is carbon-doped, it functions as a visible light responsive photocatalyst with high photocatalytic activity, and also can easily adsorb VOC, and has high hardness, exfoliation resistance, wear resistance, chemical resistance, heat resistance
- the present invention was completed by finding that a multifunctional material having excellent properties can be obtained.
- the multifunctional material of the present invention has a large number of protrusions made of titanium oxide or titanium alloy oxide on at least a part of the surface. ⁇ Titanium or titanium alloy acidity The layer where the fine pillars that have physical strength stand is exposed or thin Numerous continuous narrow protrusions having a thickness of acid titanium or titanium alloy oxide on the film and fine columns standing on the protrusions are exposed, the protrusions such as the fine columns, The narrow protrusion is carbon-doped.
- the multifunctional material of the present invention functions as a visible light responsive photocatalyst having a high photocatalytic activity, can easily adsorb VOC, and has a high hardness, such as peeling resistance, abrasion resistance, chemical resistance, Excellent heat resistance.
- FIG. 1 is a photomicrograph showing the state of the multifunctional material obtained in Example 1.
- FIG. 2 shows the surface on the thin film side of a small piece member 3 in which a large number of continuous narrow protrusions with white acid-titanium force on the thin film and fine columns standing on the protrusions are exposed. It is the microscope picture which shows the state of.
- FIG. 3 shows a large number of small piece members 3 that are exposed on a large number of continuous narrow-width protrusions and protrusions having a white acid-titanium force on a thin film, exposing fine columns.
- 5 is a microscopic photograph showing the state of the surface on the side where the continuous narrow protrusions and the fine columns standing on the protrusions are exposed.
- FIG. 4 is a photomicrograph showing the state of layer 2 in which fine columns of white acid-titanium power stand.
- FIG. 5 is a graph showing the results of Test Example 4 (antifouling test).
- FIG. 6 is a graph showing the results of Test Example 5 (crystal structure and bonding state).
- FIG. 7 is an SEM photograph of Example 7 after a heating time of 120 seconds.
- FIG. 8 is a SEM photograph of Example 7 after a heating time of 180 seconds.
- FIG. 9 is an SEM photograph of Example 7 after a heating time of 480 seconds.
- the multifunctional material of the present invention is such that the surface of the substrate having at least a surface layer of titanium, titanium oxide, titanium alloy or titanium alloy is heated with, for example, a flame of unsaturated hydrocarbon, particularly acetylene. Then, a layer in which fine columns of acid titanium or titanium alloy oxide strength are formed is formed inside the surface layer, and then, for example, thermal stress, shear stress, or tensile force is applied. In addition, the fine pillars are forested, and the layer is cut in a direction along the surface layer so that it is at least partly on the substrate, usually on the substrate, the titanium oxide or titanium alloy.
- a member in which a layer in which fine pillars with acid strength are exposed is exposed, a number of continuous narrow protrusions with titanium oxide or titanium alloy oxide strength on a thin film, and a forest on the protrusions.
- the substrate whose at least surface layer is made of titanium, titanium oxide, titanium alloy or titanium alloy oxide is such that the entire substrate is made of titanium, titanium oxide, titanium alloy or titanium alloy oxide.
- the surface portion forming layer made of titanium, titanium oxide, titanium alloy, or titanium alloy oxide and a core material made of another material may be used.
- the shape of the substrate may be any final product shape (flat plate shape or three-dimensional shape) where photocatalytic activity and Z or super hydrophilicity are desired! /.
- At least the surface layer is made of titanium, titanium oxide, titanium alloy, or titanium alloy oxide.
- the surface portion forming layer is made of titanium, titanium oxide, titanium alloy, or a titanium alloy oxide layer, and other materials. When it is composed of a core material that also has strength, the thickness (amount) of the surface layer forming layer is comparable to the amount of the layer in which fine columns made of titanium oxide or titanium alloy oxide are formed.
- the material of the core material is not particularly limited as long as it does not burn, melt or deform during the heat treatment in the production of the multifunctional material of the present invention.
- iron, iron alloy, non-ferrous alloy, glass, ceramics, etc. can be used as the core material.
- a substrate composed of such a thin film surface layer and a core material for example, a film made of titanium, titanium oxide, titanium alloy or titanium alloy oxide film is sputtered on the surface of the core material, Formed by methods such as vapor deposition and thermal spraying, etc., or formed by coating commercially available titanium oxide sol on the surface of the core material by spray coating or spin coating. Etc. can be mentioned.
- the thickness of the surface layer is preferably 0.5 m or more, more preferably 4 ⁇ m or more.
- the multifunctional material of the present invention for example, it is desirable to use a combustion flame of a gas mainly composed of unsaturated hydrocarbons, particularly acetylene, and particularly to use a reducing flame.
- a gas containing at least 50% by volume of unsaturated hydrocarbon for example, a gas containing at least 50% by volume of acetylene and appropriately mixed with air, hydrogen, oxygen or the like. It is preferable to use it.
- the fuel component is most preferably 100% acetylene.
- the surface layer has titanium, titanium oxide, titanium alloy, or titanium alloy acid strength.
- the surface is heat-treated in a combustion exhaust gas atmosphere. This heat-treatment can be carried out, for example, with a gas burner or in a furnace. When heat treatment is performed at a high temperature by directly applying a combustion flame, the combustion flame may be applied to the surface of the substrate by a gas burner. When heat treatment is performed at a high temperature in a combustion exhaust gas atmosphere, the above fuel gas is burned in the furnace, and an atmosphere containing the high temperature combustion exhaust gas is used. Just do it.
- At least the surface layer is made of titanium, titanium oxide, a titanium alloy, or a titanium alloy oxide. And then applying, for example, thermal stress, shear stress, and tensile force, the microcolumns stand and the layer is cut in a direction along the surface layer to at least partly on the substrate.
- the layer in which the fine pillars of the titanium oxide or titanium alloy are exposed is exposed, and a large number of continuous layers of the titanium oxide or titanium alloy on the thin film are exposed. It is necessary to adjust the heating temperature and the heat treatment time so that the narrow protrusion and the fine column can be exposed and the member can be obtained.
- This heat treatment is preferably performed at a temperature of 600 ° C or higher.
- the height of the layer on which the fine pillars stand is about 1 to 20 / zm, and the thickness of the thin film thereon is about 0.1 to about LO m
- An intermediate with an average thickness of fine columns of about 0.2 to 3 m is formed.
- the layer in which the microcolumns are erected is cut in a direction along the surface layer, so that at least a part of the acid on the substrate is formed.
- a fine column made of titanium or titanium alloy oxide is planted, and the layer is exposed, and the member (that is, the fine column on the substrate is planted! Exists on the layer).
- the thin film obtained as described above a large number of continuous narrow protrusions that are oxidized by titanium or titanium alloy, and a fine column that stands on the protrusions.
- the exposed members become small pieces, and the height of the protrusions on each small piece is about 2 to 12 m, and the height of the fine pillars is the surface layer of the layer where the fine pillars stand.
- the height of the fine pillars cut in the direction along the direction The force that changes depending on the position
- the height of the layer where the fine pillars stand is generally about 1 to 5 m, and the average thickness of the fine pillars is 0.2 to 0 . About 5 m.
- This member can also adsorb VOC and has a large surface area, so it has high activity as a photocatalyst.
- this member can be used as it is or pulverized, and the pulverized product can easily adsorb VOC and has a large surface area, so it has high activity as a photocatalyst.
- the multifunctional material of the present invention fine columns made of titanium oxide or titanium alloy oxide, a large number of continuous narrow protrusions, and the fine columns formed on the protrusions are carbon-doped. Therefore, it responds not only to ultraviolet rays but also visible light having a wavelength of 400 nm or more, and works particularly effectively as a photocatalyst, and can be used as a visible light responsive photocatalyst. Expresses photocatalytic function.
- each fine column of the layer in which the fine columns made of acid titanium or titanium alloy oxide constituting the multifunctional material of the present invention are erected see the microscopes in Figs. As judged from the photograph, it is prismatic, cylindrical, pyramidal, conical, inverted pyramid or inverted conical, etc., and extends straight or perpendicular to the surface of the substrate. May be bent, extended, branched and extended, or a composite of these. Moreover, as the whole shape, it can be shown by various expressions such as a frost column shape, a raised carpet shape, a basket shape, a column shape, and a column shape assembled with blocks. In addition, the thickness and height of these fine pillars, the size of the base (bottom), etc. vary depending on heating conditions.
- the thin film of the present invention a member in which a large number of continuous narrow-width protrusions made of acid titanium or titanium alloy oxide, and fine columns standing on the protrusions are exposed,
- the microscopic photographic power of Figure 3 As can be seen, the large number of consecutive narrow protrusions can be seen as the outer appearance of the tarmi shell, the appearance of pumice, and each successive narrow protrusion. It can be seen that the width protrusion is bent by a hot water wrinkle pattern.
- the shape of the fine column grown on the protrusion is the same as the shape of each fine column in the layer, with the fine column on the base described above being grown. Since there are many things that are cut at the joint, the density of the fine columns that stand on the protrusion is more general than the density of the fine pillars on the layer where the fine columns on the base stand. Becomes smaller.
- the surface of a titanium plate having a thickness of 0.3 mm was heat-treated with an acetylene combustion flame at the surface layer temperature shown in Table 1 for the time shown in Table 1. After that, when the surface to which the combustion flame is applied is brought into contact with the flat surface of a 30 mm thick stainless steel block and cooled, a layer in which fine pillars of white acid-titanium force are formed on the majority of the titanium plate surface. Exposed parts and thin film It was separated into a large number of continuous narrow protrusions having white acid-titanium force and small piece members with exposed fine columns standing on the protrusions. In other words, the layer in which the fine pillars of acid-titanium force formed in the surface layer by heat treatment are erected is cooled by the subsequent cooling. Cut along the direction. In this way, multifunctional materials of Examples 1 to 4 were obtained.
- Fig. 1 is a micrograph of the multifunctional material obtained in Example 1, in which fine columns with white acid-titanium power stand on the titanium plate surface 1, and the layer 2 is exposed. In this way, a large number of continuous narrow protrusions with white oxide-titanium force on the thin film and fine pillars standing on the protrusions are exposed, and the small piece member 3 is on the layer 2 Remain in a part of and show the state of the!
- the micrograph in FIG. 1 shows a state in which a part of the layer 2 where the fine columns are erected is removed.
- FIG. 2 shows the state of the surface on the thin film side of the small piece member 3 in which a large number of continuous narrow protrusions with white acid-titanium force on the thin film and the fine columns exposed on the protrusions are exposed.
- FIG. 3 is a micrograph showing a large number of continuous narrow-width protrusions having white acid-titanium force on a thin film and a fine column exposed on the protrusions, and a small piece member.
- Fig. 4 is a photomicrograph showing the state of the surface on the side where a large number of continuous narrow protrusions 3 and the fine columns standing on the protrusions are exposed, and Fig. 4 shows the white acid-titanium force. This is a photomicrograph showing the state of layer 2 in which the fine pillars stand.
- the surface of a Ti-6A1-4V alloy plate having a thickness of 0.3 mm was heat-treated with an acetylene combustion flame at the surface layer temperature shown in Table 1 for the time shown in Table 1. After that, when the surface exposed to the combustion flame is brought into contact with the flat surface of a 30 mm thick stainless steel block and cooled, a layer in which fine columns of titanium alloy oxides are formed on most of the surface of the titanium alloy plate. And a member that is exposed to V, a large number of continuous narrow-width protrusions having a titanium alloy acidity on the thin film, and a small column member that is exposed on the protrusions to expose the fine columns. Separated.
- a titanium thin film with a thickness of about 3 m was formed on the surface of a 0.3 mm thick stainless steel plate (SUS316) by electron beam evaporation.
- the thin film surface is acetylene combustion flame, Heat treatment was carried out at the surface layer temperature shown in Table 1 for the time shown in Table 1. After that, when the surface to which the flame is applied is brought into contact with the flat surface of a 30 mm thick stainless steel block and cooled, a layer in which fine columns of white oxy-titanium force are forested on most of the stainless steel plate surface. And a small piece member in which a number of continuous narrow-width protrusions having white acid-titanium force on the thin film and fine columns standing on the protrusions are exposed. .
- a commercially available acid titanium sol (STS-01 from Ishihara Sangyo Co., Ltd.) was spin-coated on a 0.3 mm thick titanium plate, and then heated to form a titanium plate having an acid titanium film with improved adhesion. .
- Test Example 1 (Attraction hardness test: pencil method)
- Test Example 2 (Chemical resistance test)
- the member in which the layer with the fine pillars is exposed on the surface of the substrate obtained in Examples 1 to 6 was immersed in a 1M sulfuric acid aqueous solution and a 1M aqueous sodium hydroxide solution at room temperature for 1 week, washed with water, After drying, the above-mentioned pulling hardness test: the pencil method was carried out. The results are shown in Table 1. In other words, no damage was observed even when 9H pencils were used for all the test pieces, and it was confirmed that they had high chemical resistance.
- Test Example 3 Heat resistance test
- the member in which the layer with the fine pillars exposed on the substrate surface obtained in Examples 1 to 6 is exposed is placed in a tubular furnace, and the temperature is raised from room temperature to 500 ° C over 1 hour in an air atmosphere. After holding at a constant temperature of 500 ° C. for 2 hours and further allowing to cool to room temperature over 1 hour, the above-mentioned scratch hardness test: the pencil method was carried out. The results are shown in Table 1. In other words, no damage was observed even when 9H pencil was used for all the test pieces, and it was confirmed that the test piece had high heat resistance. [0036] [Table 1]
- Test Example 4 Anti-fouling test
- a member having a surface area of 8 cm 2 in which fine pillars stand on the surface of the substrate obtained in Example 4 and the layer is exposed, and a surface area of 8 cm 2 having the titanium oxide film obtained in Comparative Example 1 are obtained.
- the deodorizing test was conducted using 2 titanium plates. Specifically, each sample was immersed in 80 mL of methylene blue aqueous solution adjusted to a concentration of about 10 molZL so that the effect of concentration reduction due to initial adsorption could be ignored, and then manufactured by Matsushita Electric Industrial Co., Ltd.
- Visible light was irradiated by a fluorescent lamp equipped with a UV cut filter, and the absorbance of a methylene blue aqueous solution at a wavelength of 660 nm was measured with a water quality inspection apparatus DR Z2400 manufactured by HACH at each predetermined irradiation time. The result was as shown in FIG.
- Test Example 5 (Crystal structure and bonding state)
- the acceleration voltage is measured with an X-ray photoelectron spectrometer (XPS): 10 kV, target: A1, Ar ion sputtering was performed for 2700 seconds, and analysis was started.
- XPS X-ray photoelectron spectrometer
- the result of the analysis is as shown in FIG.
- the highest peak appears when the binding energy is 284.6 eV. This is judged to be a C H (C) bond commonly found in Cls analysis.
- the next highest peak is seen when the binding energy is 281.6 eV. Since the bond energy of Ti—C bond is 281.6 eV, it is judged that C is doped as Ti C bond in the fine column of Example 3.
- XPS analysis at 14 points at different heights of the fine column, similar peaks appeared in the vicinity of 281.6 eV at all points.
- a titanium disc having a diameter of 32 mm and a thickness of 0.3 mm was used as a test piece, and its surface was heated by an acetylene combustion flame so that the surface temperature was maintained at about 1150 ° C.
- the first test piece was allowed to cool after heating was stopped at a heating time of 120 seconds.
- heating was stopped at 180 seconds and allowed to cool.
- the third specimen was heated for 480 seconds and immediately cooled by bringing the surface to which the flame was applied into contact with the flat surface of a 30 mm thick stainless steel block. By this cooling, the surface of the titanium plate was peeled off from the thin film, and from there, a member was obtained in which a layer in which fine columns of white acid-titanium force were erected was exposed.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP06713850A EP1852183A4 (en) | 2005-02-24 | 2006-02-16 | MULTIFUNCTIONAL MATERIAL |
CN2006800138782A CN101163550B (zh) | 2005-02-24 | 2006-02-16 | 多功能材料 |
US11/884,567 US7718270B2 (en) | 2005-02-24 | 2006-02-16 | Multifunctional material |
JP2006518490A JP4010558B2 (ja) | 2005-02-24 | 2006-02-16 | 多機能材 |
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JP2005049785 | 2005-02-24 | ||
JP2005-049785 | 2005-02-24 |
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PCT/JP2006/302709 WO2006090631A1 (ja) | 2005-02-24 | 2006-02-16 | 多機能材 |
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US (1) | US7718270B2 (ja) |
EP (1) | EP1852183A4 (ja) |
JP (1) | JP4010558B2 (ja) |
KR (1) | KR100948056B1 (ja) |
CN (1) | CN101163550B (ja) |
TW (1) | TWI315217B (ja) |
WO (1) | WO2006090631A1 (ja) |
Cited By (3)
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JP2006238937A (ja) * | 2005-02-28 | 2006-09-14 | Central Res Inst Of Electric Power Ind | 体着具 |
JP2006240625A (ja) * | 2005-02-28 | 2006-09-14 | Central Res Inst Of Electric Power Ind | 金属製容器 |
DE102008046391A1 (de) | 2008-09-09 | 2010-03-11 | Kronos International, Inc. | Verfahren zur Herstellung kohlenstoffmodifizierter Photokatalysatorschichten |
Families Citing this family (1)
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EP2438990B1 (en) * | 2009-06-01 | 2020-07-29 | Nippon Steel Corporation | Titanium-based material responsive to visible light and having excellent photocatalytic activity, and process for producing same |
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JP2006240625A (ja) * | 2005-02-28 | 2006-09-14 | Central Res Inst Of Electric Power Ind | 金属製容器 |
DE102008046391A1 (de) | 2008-09-09 | 2010-03-11 | Kronos International, Inc. | Verfahren zur Herstellung kohlenstoffmodifizierter Photokatalysatorschichten |
Also Published As
Publication number | Publication date |
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EP1852183A4 (en) | 2011-06-29 |
JPWO2006090631A1 (ja) | 2008-07-24 |
EP1852183A1 (en) | 2007-11-07 |
TW200640572A (en) | 2006-12-01 |
KR100948056B1 (ko) | 2010-03-19 |
JP4010558B2 (ja) | 2007-11-21 |
CN101163550B (zh) | 2012-04-25 |
KR20070111535A (ko) | 2007-11-21 |
CN101163550A (zh) | 2008-04-16 |
US7718270B2 (en) | 2010-05-18 |
TWI315217B (en) | 2009-10-01 |
US20080152869A1 (en) | 2008-06-26 |
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