WO2016021888A1 - 광촉매 기능성 필름 및 이의 제조방법 - Google Patents
광촉매 기능성 필름 및 이의 제조방법 Download PDFInfo
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- WO2016021888A1 WO2016021888A1 PCT/KR2015/008066 KR2015008066W WO2016021888A1 WO 2016021888 A1 WO2016021888 A1 WO 2016021888A1 KR 2015008066 W KR2015008066 W KR 2015008066W WO 2016021888 A1 WO2016021888 A1 WO 2016021888A1
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- tio
- photocatalyst
- visible light
- amorphous
- functional film
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 17
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- 239000000758 substrate Substances 0.000 claims abstract description 29
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 10
- 239000002243 precursor Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 85
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- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052705 radium Inorganic materials 0.000 claims description 3
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 21
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- 238000000354 decomposition reaction Methods 0.000 description 7
- 229920002799 BoPET Polymers 0.000 description 6
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000003980 solgel method Methods 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
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- 238000004140 cleaning Methods 0.000 description 3
- 238000004332 deodorization Methods 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
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- -1 superoxide anions Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- HORQAOAYAYGIBM-UHFFFAOYSA-N 2,4-dinitrophenylhydrazine Chemical compound NNC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O HORQAOAYAYGIBM-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
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- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241000220259 Raphanus Species 0.000 description 1
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- 239000007864 aqueous solution Substances 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
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- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 description 1
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- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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- B01J23/888—Tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0236—Drying, e.g. preparing a suspension, adding a soluble salt and drying
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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
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- B01J37/024—Multiple impregnation or coating
- B01J37/0244—Coatings comprising several layers
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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
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
- B01J37/033—Using Hydrolysis
Definitions
- It relates to a photocatalytic functional film and a method of manufacturing the same.
- a photocatalyst that can comfortably make IAQ (Indoor Air Quality) can be coated on the surface of interior interior materials.
- a binder must be used essentially to adhere to the substrate to coat the photocatalyst. However, the binder covers the surface of the photocatalyst in the process of bonding with the photocatalyst, thereby reducing the surface exposure area of the photocatalyst. For this reason, when using a binder, the performance of the photocatalyst by surface reaction will fall by a binder.
- One embodiment of the present invention uses a binder that does not degrade the efficiency of the photocatalyst, and provides a photocatalyst functional film including a barrier layer.
- Another embodiment of the present invention provides a method for producing the photocatalyst functional film.
- the substrate layer, a barrier layer, and a photocatalytic layer laminated structure the barrier layer is an amorphous TiO 2 film, the photocatalyst layer is an amorphous TiO 2 film; And it provides a photocatalytic functional film comprising visible light active photocatalyst particles formed on the surface of the amorphous TiO 2 film.
- the porosity of the amorphous TiO 2 film may be about 5% to about 50%.
- the specific surface area of the amorphous TiO 2 film may be about 5 m 2 / g to about 500 m 2 / g.
- the amorphous TiO 2 film may be formed by a TiO 2 amorphous sol.
- the visible light active photocatalyst particles may be porous metal oxide particles carrying a visible light activating metal including pores.
- the porous metal oxide particles may include at least one selected from titanium oxide, tungsten oxide, zinc oxide, niobium oxide, and combinations thereof.
- At least one metal selected from tungsten, chromium, vanadium, molybdenum, copper, iron, cobalt, manganese, nickel, platinum, gold, cerium, cadmium, zinc, magnesium, calcium, strontium, barium, radium and combinations thereof
- the visible light activating metal comprising, or in the form of an oxide thereof, the visible light activating metal may be supported on the porous metal oxide particles.
- the visible light active photocatalyst particles may comprise a weight ratio of about 99.9: 0.1 to about 99: 1 by weight of the sum of the porous metal oxide to the visible light activating metal and the visible light activating metal oxide.
- the barrier layer may have a thickness of about 20 nm to about 500 nm.
- the photocatalyst layer may have a thickness of about 50 nm to about 500 nm.
- the substrate may be an interior interior material.
- the alcohol solvent may be at least one selected from the group consisting of isopropyl alcohol, ethanol, methanol, butanol and combinations thereof.
- the composition may include about 20 to about 100 parts by weight of the TiO 2 amorphous sol based on 100 parts by weight of the visible light active photocatalyst particles.
- the photocatalyst functional film may implement an air cleaning, deodorization, and antibacterial effect in the room in response to visible light.
- the manufacturing method of the photocatalyst functional film By using the manufacturing method of the photocatalyst functional film, a high photocatalyst performance can be maintained, and the photocatalyst functional film which solves the decomposition problem of a base material can be provided.
- FIG. 1 is a schematic cross-sectional view of a photocatalyst functional film of one embodiment of the present invention.
- the substrate layer, a barrier layer, and a photocatalytic layer laminated structure the barrier layer is an amorphous TiO 2 film, the photocatalyst layer is an amorphous TiO 2 film; And it provides a photocatalytic functional film comprising visible light active photocatalyst particles formed on the surface of the amorphous TiO 2 film.
- coating of the visible light active photocatalyst on the surface of an interior interior material requires a binder material for attaching the visible light active photocatalyst, such as silica sol and the like.
- the binder material covers the surface of the visible light active photocatalyst, thereby reducing the exposed area of the surface of the photocatalyst.
- the photocatalytic performance of the photocatalyst that implements the surface reaction on the binder material is poor.
- the substrate when the photocatalyst is directly coated on an organic substrate, the substrate may be decomposed by the organic material decomposition reaction of the photocatalyst. In this case, the stability of the substrate may be deteriorated and harmful substances may be generated due to decomposition of the substrate. There was room for it.
- TiO 2 amorphous sol can be used as the binder material.
- the TiO 2 amorphous sol When the TiO 2 amorphous sol is formed as a binder material, the TiO 2 amorphous sol may suppress the degradation of the photoactive ability of the particles of the visible light active photocatalyst material, thereby maintaining the photoactive performance of the particulate state to the maximum.
- a barrier layer was provided between the substrate and the photocatalyst layer to block contact between the photocatalyst and the substrate.
- the barrier layer is an amorphous TiO 2 film, and may be formed by the TiO 2 amorphous sol.
- the photocatalytic functional film 100 includes a substrate 10, a barrier layer 20, and a photocatalytic layer 30. It may include a laminated structure of.
- the substrate 10 may be an interior interior material.
- the interior material includes glass, wallpaper, tile film, and the like, and the photocatalytic layer 30 is photoactivated by light entering the room to perform organic decomposition reactions, thereby providing air cleaning, deodorization, and antibacterial effects. can do.
- the barrier layer 20 may be an amorphous TiO 2 film.
- Barrier layer 20, which is an amorphous TiO 2 film, is included between the substrate 10 and the photocatalyst layer 30, thereby preventing corrosion of the substrate layer due to the photocatalyst of the photocatalyst layer by preventing contact between the substrate and the photocatalyst layer. It is possible to suppress the generation of harmful substances caused by the corrosion of the base layer, it is possible to maintain the stability of the base layer over time.
- the photocatalyst layer 30 includes an amorphous TiO 2 film; And visible light active photocatalyst particles formed on the surface of the amorphous TiO 2 film.
- a binder material is required to attach the visible light active photocatalyst particles to the barrier layer 20.
- the TiO 2 film formed using TiO 2 amorphous sol as the binder material has the same material as that of the barrier layer, and the adhesion is improved. It is not possible to lower the light efficiency of the photocatalyst particles.
- the porosity of the amorphous TiO 2 film may be about 5% to about 50%.
- the amorphous TiO 2 membrane may have a porosity in the range as a porous membrane, and at this time, the catalytic activity efficiency of the visible light active photocatalyst particles with respect to visible light may be further improved.
- the amorphous TiO 2 film does not have porosity and is densely formed by a sputtering method, adsorption of reactants such as formaldehyde is not efficiently performed, and thus it is difficult to expect excellent photocatalytic activity.
- the specific surface area of the amorphous TiO 2 film may be about 5 m 2 / g to about 500 m 2 / g. Since the amorphous TiO 2 film has a specific surface area in the above range, the catalytic activity efficiency of the visible light active photocatalyst particles with respect to visible light may be more excellent.
- the amorphous TiO 2 film may be formed by a TiO 2 amorphous sol.
- the TiO 2 amorphous sol has excellent adhesion and is advantageous in securing transparency of the photocatalytic layer 30 formed by using the TiO 2 amorphous sol as a binder.
- the TiO 2 amorphous sol is used amorphous as in the manufacturing method described below. Since the TiO 2 amorphous sol is used without being crystallized, the TiO 2 amorphous sol may be transparent because the TiO 2 particle size is small compared to the crystallized size.
- the crystallized TiO 2 sol has a small surface area and a low functional group content while maintaining a constant bond, whereas the TiO 2 amorphous sol has a high surface area and a high functional group content, thereby providing excellent adhesion.
- the TiO 2 amorphous sol may be prepared using a sol-gel method for dehydration and de-alcohol reaction using an alcohol solvent other than water. The specific manufacturing method is mentioned later.
- the photocatalyst layer 30 includes visible light active photocatalyst particles formed on the surface of the amorphous TiO 2 film, and the visible light active photocatalyst particles may be porous metal oxide particles carrying a visible light activation metal including pores. have.
- the porous metal oxide particles may include at least one selected from titanium oxide, tungsten oxide, zinc oxide, niobium oxide, and combinations thereof, and materials known as metal oxides that may be used as photocatalysts may be used without limitation.
- the porous metal oxide particles mainly have photoactivity against ultraviolet rays.
- the visible light activating metal may be used without limitation, a metal capable of imparting photoactivity to visible light on the metal oxide, and specifically, the visible light activating metal may be a transition metal, a noble metal, or the like.
- the visible light activating metal is tungsten, chromium, vanadium, molybdenum, copper, iron, cobalt, manganese, nickel, platinum, gold, cerium, cadmium, zinc, magnesium, calcium, strontium, barium, radium And at least one metal selected from combinations thereof.
- the visible light activating metal may be supported on the porous metal oxide particles in the visible light activating metal in the form of an oxide of the above-described metal.
- the visible light active photocatalyst particles may be formed on the surface of the amorphous TiO 2 film by doping the visible light-activating metal particles into pores in the porous metal oxide particles, and the photocatalyst layer 30 formed as described above may be visible light. It may have photoactivity to.
- the visible light active photocatalyst particles include visible light activating metal particles having photoactivity to visible light
- the visible light active photocatalyst particles may have activity on visible light as well as ultraviolet light and may absorb light over the entire visible light region.
- the particles may have photoactivity to visible light in the wavelength range of 380 nm to 780 nm.
- the visible light active photocatalyst particles may perform air cleaning, deodorization, and antibacterial activity by electrons and holes generated from energy obtained by absorbing light to generate superoxide anions or hydroxy radicals.
- superoxide anions or hydroxy radicals generated from the particles can degrade harmful environmental substances such as formaldehyde.
- the particles since the particles have a high absorption rate to visible light and can show excellent efficiency even in an indoor light source, it may not require a separate UV supply device.
- the visible light active photocatalyst particles may comprise a weight ratio of about 99.9: 0.1 to about 99: 1 by weight of the sum of the porous metal oxide to the visible light activating metal and the visible light activating metal oxide.
- the barrier layer may have a thickness of about 20 nm to about 500 nm.
- the barrier layer is a layer for preventing contact between the substrate and the photocatalyst layer, thereby maintaining the thickness in the above range, thereby preventing decomposition of the substrate layer by the photocatalyst.
- the thickness of the barrier layer is less than about 20 nm, the amorphous TiO 2 film may not be sufficiently formed, so that separation from the substrate may not be sufficiently provided, and when the barrier layer is about 500 nm, it is not economical in terms of cost.
- the photocatalyst layer may have a thickness of about 50 nm to about 500 nm.
- the photocatalyst layer includes an amorphous TiO 2 film and visible light active photocatalyst particles, wherein the amorphous TiO 2 film is formed using a TiO 2 amorphous sol as a binder material, and thus the photocatalytic efficiency of the particles is not deteriorated. Adhesion with the layer may be increased to provide a stable photocatalytic functional film.
- the thickness of the photocatalyst layer maintains the above range, so that the photocatalytic effect can be easily realized, and when the thickness of the photocatalytic layer is less than about 50 nm, the photocatalytic layer cannot be formed completely, and thus sufficient photocatalytic effect cannot be provided. If it exceeds 500nm, there may be a part not participating in the photocatalytic reaction, which is disadvantageous in terms of cost and efficiency.
- the method for preparing the photocatalytic functional film may include adding an alcohol solvent and an acid to the titanium precursor to obtain a TiO 2 amorphous sol by dehydration and dealcoholization.
- the TiO 2 amorphous sol may be obtained by using a sol gel method, specifically, an alcohol solution may be added to a titanium precursor, and dehydration and dealcoholization may be performed by hydrolysis using an acid as a catalyst to obtain a TiO 2 amorphous sol. have.
- a separate water is not used, but may be added in the form of a solution mixed with an acid to be hydrolyzed. Meanwhile, a hydrolysis reaction may occur in which an alcohol group of the alkoxide precursor is substituted with an OH group by an acid.
- the titanium precursor may be a known compound that can be used for the sol-gel method such as titanium alkoxide, and specifically, titanium tetraisopropoxide, titanium tetraethoxide, titanium tetrabutoxide and the like may be used.
- the alcohol solvent may be at least one selected from the group consisting of isopropyl alcohol, ethanol, methanol, butanol and combinations thereof.
- the acid is used as a catalyst for the titanium precursor and the alcohol to dehydrate and de-alcohol, and strong acids such as nitric acid and hydrochloric acid may be used.
- the obtained TiO 2 amorphous sol is a solution in which amorphous TiO 2 particles are dispersed in a colloidal state.
- the obtained TiO 2 amorphous sol may be applied and dried on a substrate to form a barrier layer.
- a composition formed by mixing visible light active photocatalyst particles with the TiO 2 amorphous sol may be applied and dried on the barrier layer to form a photocatalyst layer.
- composition for forming a photocatalyst layer may be prepared by mixing particles of the visible light active photocatalyst separately prepared in the obtained TiO 2 amorphous sol.
- the visible light active photocatalyst particles may be prepared by first preparing a porous metal oxide particle, and then immersing it in a precursor solution of a visible light activating metal to allow the visible light activating metal to penetrate into the porous metal oxide particle in an ionic state. It can be prepared by reducing the ions of the activating metal to the visible light activating metal to be supported inside the porous metal oxide particles.
- the visible light active photocatalyst particles may be porous particles of WO 3 loaded with Pt metal.
- the composition may include about 20 to about 100 parts by weight of the TiO 2 amorphous sol based on 100 parts by weight of the visible light active photocatalyst particles.
- the TiO 2 sol ratio of the amorphous content it is possible to obtain the appropriate surface binding of the large surface area due to the smaller TiO 2 particles of TiO 2 sol amorphous.
- the content of the TiO 2 amorphous sol is too high, the surface of the visible light active photocatalyst particles may be covered to lower the reactivity.
- a photocatalytic functional film By using the method for producing a photocatalytic functional film, a high photocatalytic performance can be maintained and a photocatalytic functional film can be produced that solves the problem of decomposition of the substrate.
- a 10 wt% solution of titanium tetraisopropoxide is prepared using isopropyl alcohol as a solvent. After stirring for 30 minutes, a small amount of concentrated nitric acid was added to hydrolyze. After dehydration and dealcoholization through stirring for 30 minutes, an amorphous TiO 2 sol was prepared.
- the amorphous TiO 2 sol was applied to a PET film at a thickness of 100 nm, and dried at room temperature to form a barrier layer.
- the composition was prepared by mixing 50 parts by weight of the amorphous TiO 2 sol and 100 parts by weight of Pt-supported WO 3 photocatalyst, and applying the composition to the barrier layer using a bar coater at a thickness of 100 nm and drying at room temperature.
- the photocatalyst layer was formed to prepare a photocatalytic functional film.
- a photocatalytic functional film was prepared in the same manner as in Example 1, except that the barrier layer was formed on the substrate.
- Distilled water was used as a solvent to prepare a 10 wt% aqueous solution of titanium tetraisopropoxide, followed by stirring to produce a uniform precipitate. Thereafter, a sufficient amount of nitric acid was added as an acid catalyst to obtain a transparent sol by condensation polymerization. This was stirred at 80 ° C. for at least 8 hours to prepare an opaque crystalline TiO 2 sol.
- the crystalline TiO 2 sol was applied on a PET film at a thickness of 100 nm, and dried at room temperature to form a barrier layer.
- a visible light active photocatalyst coating composition was prepared by mixing 50 parts by weight of the crystalline TiO 2 sol and 100 parts by weight of Pt-supported WO 3 photocatalyst.
- the visible light active photocatalyst coating composition was coated to a thickness of 100 nm on the barrier layer using a bar coater and dried at room temperature to form a visible light active photocatalyst layer.
- Formaldehyde removal performance was evaluated for the photocatalyst layers of Example 1 and Comparative Examples 1-2. After installing the photocatalyst layer prepared in Example 1 and Comparative Example 1-2 in a 20L small chamber (ADTEC Co., Ltd.), clean air having a formaldehyde concentration of 0.08 ppm was continuously flowed at a flow rate of 167 cc / min. 0.5 times / hr. A 10W white fluorescent lamp was used as the light source, and the illuminance was set to be 1000 lux. Formaldehyde removal rate was calculated by measuring the concentration before entering the chamber and after passing through the chamber is shown in Table 1 below. The concentration was analyzed by high performance liquid chromatography (HPLC, Agilent) by concentrating the amount for 10 L using a DNPH (2,4-dinitrophenylhydrazine) cartridge.
- HPLC high performance liquid chromatography
- Example 1 the PET film included in Example 1 and Comparative Examples 1-2 was judged with the naked eye, and are shown in Table 1 below.
- the visible light active photocatalyst particles showed similar light efficiency to the particle state after formation as the photocatalyst layer in Example 1, but in Comparative Examples 1 and 2 it was confirmed that the light efficiency after the formation of the photocatalytic layer is significantly lower than when the particle state. It was.
- Example 1 and Comparative Example 2 which separately include the barrier layer between the substrate and the photocatalyst layer by the amorphous TiO 2 sol, were not damaged, but the PET film of Comparative Example 1, which does not include the barrier layer, was damaged. It was confirmed.
- Example 1 includes a photocatalyst layer formed by using amorphous TiO 2 sol as a binder material, and it was found that the light efficiency was excellent and the side layer and the side reaction could be suppressed due to the barrier layer.
Abstract
Description
구분 | 바인더 | 배리어층유무 | 포름알데히드 제거율 | PET필름 손상여부 |
실시예 1 | 비결정성 TiO2 졸 | 유 | 80% | 손상 없음 |
비교예 1 | 비결정성 TiO2 졸 | 무 | 0% | 손상 |
비교예 2 | 결정성 TiO2 졸 | 유 | 50% | 손상 없음 |
Claims (14)
- 기재층, 배리어층, 및 광촉매층의 적층구조이고,상기 배리어층은 비결정성 TiO2막이고,상기 광촉매층은 비결정성 TiO2막; 및 상기 비결정성 TiO2 막의 표면에 형성된 가시광 활성 광촉매재 입자를 포함하는광촉매 기능성 필름.
- 제1항에 있어서,상기 비결정성 TiO2막의 기공도는 5% 내지 50%인광촉매 기능성 필름.
- 제1항에 있어서,상기 비결정성 TiO2막의 비표면적이 5m2/g 내지 500m2/g인광촉매 기능성 필름.
- 제1항에 있어서,상기 비결정성 TiO2막은 TiO2 비결정성 졸에 의해 형성되는광촉매 기능성 필름.
- 제 1항에 있어서,상기 가시광 활성 광촉매재 입자는 공극을 포함하는 가시광 활성부여 금속을 담지한 다공성 금속 산화물 입자인광촉매 기능성 필름.
- 제 5항에 있어서,상기 다공성 금속 산화물 입자는 산화티탄, 산화텅스텐, 산화아연, 산화니오븀 및 이들의 조합에서 선택된 적어도 하나를 포함하는광촉매 기능성 필름.
- 제 5항에 있어서,텅스텐, 크롬, 바나듐, 몰리브데넘, 구리, 철, 코발트, 망간, 니켈, 백금, 금, 세륨, 카드늄, 아연, 마그네슘, 칼슘, 스트로니튬, 바륨, 라듐 및 이들의 조합에서 선택된 적어도 하나의 금속을 포함하는 가시광 활성부여 금속, 또는 이들의 산화물 형태로 상기 가시광 활성부여 금속이 다공성 금속 산화물 입자에 담지된광촉매 기능성 필름.
- 제 1항에 있어서,상기 가시광 활성 광촉매재 입자는 다공성 금속 산화물 대 가시광 활성부여 금속과 가시광 활성부여 금속 산화물 합의 중량비 99.9:0.1 내지 99:1의 중량비로 포함하는광촉매 기능성 필름.
- 제 1항에 있어서,상기 배리어층의 두께는 20nm 내지 500nm인광촉매 기능성 필름.
- 제 1항에 있어서,상기 광촉매층의 두께는 50nm 내지 500nm인광촉매 기능성 필름.
- 제 1항에 있어서,상기 기재는 실내 인테리어 내장재인광촉매 기능성 필름.
- 티타늄 전구체에 알코올 용매 및 산을 가하여 탈수 및 탈알콜 반응에 의해 TiO2 비결정성 졸을 얻는 단계;상기 TiO2 비결정성 졸을 기재상에 도포 및 건조하여 배리어층을 형성하는 단계; 및상기 TiO2 비결정성 졸에 가시광 활성 광촉매재 입자를 혼합하여 형성된 조성물을 상기 배리어층상에 도포 및 건조하여 광촉매층을 형성하는 단계;를 포함하는광촉매 기능성 필름 제조방법.
- 제 12항에 있어서,상기 알코올 용매는 이소프로필알콜, 에탄올, 메탄올, 부탄올 및 이들의 조합으로 이루어진 군으로부터 선택된 적어도 하나인광촉매 기능성 필름 제조방법.
- 제 12항에 있어서,상기 조성물은 가시광 활성 광촉매재 입자 100 중량부에 대해서 상기 TiO2 비결정성 졸을 20 내지 100 중량부 포함하는광촉매 기능성 필름 제조방법.
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US11278877B2 (en) * | 2017-08-22 | 2022-03-22 | Mitsubishi Electric Corporation | Photocatalyst, photocatalyst carrier, method for producing photocatalyst, and method for producing photocatalyst carrier |
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KR101891369B1 (ko) | 2018-08-27 |
JP6352527B2 (ja) | 2018-07-04 |
US10220372B2 (en) | 2019-03-05 |
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