WO2001017680A1 - Photocatalyseur de dioxyde de titane particulaire, procede de production dudit photocatalyseur et applications en decoulant - Google Patents
Photocatalyseur de dioxyde de titane particulaire, procede de production dudit photocatalyseur et applications en decoulant Download PDFInfo
- Publication number
- WO2001017680A1 WO2001017680A1 PCT/JP2000/006152 JP0006152W WO0117680A1 WO 2001017680 A1 WO2001017680 A1 WO 2001017680A1 JP 0006152 W JP0006152 W JP 0006152W WO 0117680 A1 WO0117680 A1 WO 0117680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- titanium dioxide
- fine particles
- support layer
- photocatalyst
- photocatalyst powder
- Prior art date
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 276
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 137
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title description 30
- 239000000126 substance Substances 0.000 claims abstract description 48
- 229940043430 calcium compound Drugs 0.000 claims abstract description 29
- 150000001674 calcium compounds Chemical class 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 19
- 229920000620 organic polymer Polymers 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 76
- 239000010419 fine particle Substances 0.000 claims description 53
- 229920000642 polymer Polymers 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000001506 calcium phosphate Substances 0.000 claims description 19
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 19
- 235000011010 calcium phosphates Nutrition 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 19
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- -1 zirconium alkoxide Chemical class 0.000 claims description 13
- 159000000007 calcium salts Chemical class 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000011164 primary particle Substances 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 7
- 150000004703 alkoxides Chemical class 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 5
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 239000010948 rhodium Substances 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- JWHOQZUREKYPBY-UHFFFAOYSA-N rubonic acid Natural products CC1(C)CCC2(CCC3(C)C(=CCC4C5(C)CCC(=O)C(C)(C)C5CC(=O)C34C)C2C1)C(=O)O JWHOQZUREKYPBY-UHFFFAOYSA-N 0.000 claims 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims 1
- 150000004645 aluminates Chemical class 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 230000003472 neutralizing effect Effects 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 21
- 238000000576 coating method Methods 0.000 abstract description 20
- 239000002245 particle Substances 0.000 abstract description 20
- 238000000746 purification Methods 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000012778 molding material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 85
- 230000001699 photocatalysis Effects 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 18
- 239000002002 slurry Substances 0.000 description 13
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 10
- 239000000835 fiber Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 230000006866 deterioration Effects 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000010137 moulding (plastic) Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 3
- BSDOQSMQCZQLDV-UHFFFAOYSA-N butan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] BSDOQSMQCZQLDV-UHFFFAOYSA-N 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910001388 sodium aluminate Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000002353 algacidal effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000843 anti-fungal effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- LYCAIKOWRPUZTN-NMQOAUCRSA-N 1,2-dideuteriooxyethane Chemical compound [2H]OCCO[2H] LYCAIKOWRPUZTN-NMQOAUCRSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 241000531908 Aramides Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 101001044869 Shewanella frigidimarina (strain NCIMB 400) Ice-binding protein 1 Proteins 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- JPUHCPXFQIXLMW-UHFFFAOYSA-N aluminium triethoxide Chemical compound CCO[Al](OCC)OCC JPUHCPXFQIXLMW-UHFFFAOYSA-N 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000002468 redox effect Effects 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01J37/024—Multiple impregnation or coating
- B01J37/0244—Coatings comprising several layers
-
- B01J35/30—
-
- B01J35/39—
Definitions
- Titanium dioxide photocatalyst powder its production method, and its application
- the present invention relates to a photocatalyst powder containing titanium dioxide as a photocatalyst, a method for producing the photocatalyst powder, a polymer composition containing the photocatalyst powder, a molded product of the polymer composition, and the photocatalyst powder or the powder.
- the present invention relates to a structure having a combined composition on the surface.
- the titanium dioxide photocatalyst powder of the present invention is used as an environmental purification material for removing odors, decomposing and removing harmful substances or dirt in the air, wastewater treatment and purification treatment, or sterilization and algicidal treatment of water.
- it is applied to the surface of textiles, paper and plastic moldings, or kneaded with fiber or plastic media during the production process of textiles and plastic moldings, or used as an environmental purification material in the form of paints. Suitable for. Background art
- titanium dioxide fine particles have attracted attention as environmental purification materials used for antibacterial, deodorant, antifouling, air purification, and water purification purposes.
- the photocatalytic mechanism of titanium dioxide is such that when light is applied to the titanium dioxide fine particles, electrons and holes generated inside the titanium dioxide fine particles convert water and oxygen near the surface of the titanium dioxide fine particles into hydroxyl radicals and hydrogen peroxide. It is considered to convert harmful substances into harmless substances such as carbon dioxide by the strong redox effect of hydroxyradical and hydrogen peroxide. It is said that the photocatalytic action of titanium dioxide particles lasts semi-permanently as long as titanium dioxide particles, light, water, and oxygen are present.
- Japanese Patent Application No. 9-22539 / 1992 and Japanese Patent Application Laid-Open No. 9-239277 disclose the use of dioxidation in order to suppress the deterioration of the resin medium and binder due to the action of titanium dioxide particles.
- a method has been proposed in which a photoinactive compound is supported in the form of islands distributed on the surface of titanium particles to suppress the photocatalytic action. According to this method, the deterioration of the resin medium and the binder is reduced, but the activity as a photocatalyst is reduced because the photoinactive compound directly adheres to the active point on the surface of the titanium dioxide particles. Is required.
- H10-244416 proposes a photocatalyst in which titanium dioxide particles are coated with porous calcium phosphate on the surface.
- the photocatalytic performance of these coated titanium dioxide particles is reduced by the calcium phosphate coating layer, and there is still a problem in durability under strong ultraviolet rays such as sunlight.
- An object of the present invention is to improve the environment in view of the above-mentioned conventional technologies, such as removing odors, decomposing and removing harmful substances or dirt in the air, treating wastewater and purifying water, and imparting antibacterial and antifungal properties. It can be performed effectively, economically and safely, especially when applied to fibers, paper, plastic moldings, etc., or when mixed with fibers or plastic moldings, or when used in the form of paint, etc.
- a photocatalyst powder having good long-term durability without causing deterioration of a medium a method for producing the photocatalyst powder, a polymer composition containing the photocatalyst powder, a molded article of the polymer composition, and An object of the present invention is to provide a structure having the polymer composition on the surface.
- a main object of the present invention is to provide a photocatalyst powder exhibiting excellent durability under a strong light irradiation environment such as sunlight, a polymer composition containing the photocatalyst powder, and a molding of the polymer composition. And a structure having the polymer composition on the surface.
- the present inventor has conducted intensive studies to achieve the above object, and has found that titanium dioxide A first support layer for supporting a calcium compound is formed on the surface of the fine particles, and a porous second support layer for supporting, on the surface of the titanium dioxide fine particles, a water-insoluble substance inert as a photocatalyst. It has been found that the formation of is a photocatalyst with excellent durability without hardly impairing the high photocatalytic action of the titanium dioxide fine particles and without deteriorating the medium.
- a titanium oxide fine particle has a first support layer containing a calcium compound on the surface thereof, and the first support layer is formed on the surface of the titanium dioxide fine particle as a photocatalyst.
- a titanium dioxide photocatalyst powder characterized by having a porous second support layer that is inert and contains a substance that is hardly soluble in water.
- the poorly soluble substance preferably has a solubility product in water of 10 to 25 or less.
- a calcium compound is supported on the surface of the titanium dioxide fine particles to form a first support layer, and the surface of the titanium dioxide fine particles on which the first support layer is formed is hardly inactive as a photocatalyst.
- a method for producing a titanium dioxide photocatalyst powder comprising:
- a calcium compound is supported on the surface of the titanium dioxide fine particles to form a first support layer, and the surface of the titanium dioxide fine particles on which the first support layer is formed is further coated with an alkali aqueous solution containing metal ions. Then, the aqueous solution is neutralized, and the surface of the titanium dioxide fine particles on which the first support layer has been formed is contacted with a porous second support containing an insoluble hardly-soluble substance as a photocatalyst.
- a method for producing a titanium dioxide photocatalyst powder characterized by forming a layer;
- a calcium compound is supported on the surface of the titanium dioxide fine particles to form a first supporting layer, and further, a metal alkoxide is hydrolyzed on the surface of the titanium dioxide fine particles on which the first supporting layer is formed.
- a photocatalyst on the surface of the titanium dioxide particles Forming a porous second supporting layer containing an inert hardly soluble substance, thereby providing a method for producing a titanium dioxide photocatalyst powder.
- a polymer composition comprising an organic polymer as a medium and the above titanium dioxide photocatalyst powder; a polymer molded article obtained by molding the polymer composition; and a photocatalyst powder A body or a structure having the polymer composition on a surface is provided.
- the titanium dioxide fine particles used in the present invention are not particularly limited as long as they have a photocatalytic action.However, those having a crystal form mainly composed of ana-yuzuze zebrockite are preferable because of their high photocatalytic ability. .
- the average particle diameter of the primary particles of the titanium dioxide fine particles is preferably from 0.01 to 0.2 micron, particularly preferably from 0.01 to 0.1 micron. If the average particle size of the primary particles is less than 0.001 micron, it is difficult to produce efficiently and it is not practical. If it exceeds 0.2 micron, the performance as a photocatalyst is greatly reduced.
- the production method of the titanium dioxide fine particles used in the present invention is not particularly limited as long as they basically have a photocatalytic activity.
- those prepared by a gas phase reaction using titanium halide as a raw material, or Either a titanium halide solution or titanyl sulfate hydrolyzed by a wet method or a calcined product thereof may be used.
- the calcium compound carried on the surface of the titanium dioxide fine particles a compound which is hardly soluble in water is used so as not to be easily eluted.
- a compound which is hardly soluble in water is used so as not to be easily eluted.
- calcium oxides, phosphates, sulfates, nitrates, carbonates, and salts with organic acids are applicable.
- calcium phosphate, organic carboxylic acid calcium salt and oxidizing calcium are preferable.
- titanium dioxide fine particles are dispersed in a solution of a soluble calcium salt (for example, an aqueous solution of calcium chloride), and the calcium compound is added by adding a precipitation agent.
- a soluble calcium salt for example, an aqueous solution of calcium chloride
- titanium Precipitate on the surface of fine particles for example, adding calcium phosphate by adding Na 2 HP (L etc.) Method. If desired, this operation can be repeated to form two or more calcium compound coating layers.
- the form of the first supporting layer containing the calcium compound is not particularly limited as long as the photocatalytic function of the titanium dioxide fine particles is maintained.
- a porous calcium compound is dispersed and supported on the surface of titanium dioxide fine particles in the form of islands, or a porous calcium compound is supported on the entire surface of titanium dioxide fine particles. You may.
- the weight of the first support layer containing the calcium compound is preferably from 0.01 to 10% by weight, more preferably from 0.1 to 5% by weight, based on the weight of titanium dioxide. If the amount is less than 0.01% by weight, the durability as a photocatalyst deteriorates when added to plastics and the like, while if it is more than 10% by weight, the photocatalytic function deteriorates.
- the titanium dioxide photocatalyst powder of the present invention comprises, on the surface of the titanium dioxide fine particles on which the first support layer containing a calcium compound is formed, a porous second water-insoluble substance which is inactive as a photocatalyst. Is formed.
- the substance supported as the second supporting layer is a substance that does not substantially exhibit a catalytic action by light and is hardly soluble in porous water.
- its solubility product at 25 ° C also referred to as solubility constant
- the “porous second support layer” means that the second support layer is made of a solid substance having a large number of pores, and the size of the pores and the thickness of the support layer are: without inhibiting the movement of the gas or organic low molecular substances such as NO x, and is of a degree that allows the light transparently.
- the second support layer may not only exist on the outer surface of the first support layer but may have a portion supported on the exposed surface of the titanium dioxide fine particles where the first support layer does not exist.
- Examples of the poorly water-soluble substance supported as the second support layer include, for example, Be, B, M g, Al, Si, V, Cr, Mn, Fe, Co, Cu, Zn, Ge, Zr, Ag, In, Sn, Pb, Sb, Ba, Ta, Ce Hardly water-soluble substances containing at least one element.
- poorly water-soluble material is a metal oxide B E_ ⁇ , B 2 ⁇ 3, MgO, A 1 2 0 3, S i OS i 0, V 2 ⁇ 5, C rO, C r 20 3, MnO, Mn 2 0 3, Mn_ ⁇ 2, Mn 3 0 4, Fe 2 ⁇ 3, F e 3 0 4 CoO , Co 3 ⁇ 4, Cu 2 ⁇ , CuO, ZnO, Ge0 2, Z R_ ⁇ 2, Ag 2 ⁇ , I nO, I n 2 0 3, Sn_ ⁇ , Sn_ ⁇ 2, Pb 3 0 4, Pb_ ⁇ 2, PbO, S B_ ⁇ 2, S b 2 0 3, S b 2 0 5, B aT i 0 3, Ta_ ⁇ 2, Ta 2 ⁇ 5, C e 0 2, C a T i 0 3, F e T i 0 3 can be cited, and in non-metallic oxide, CuS, Cu ( ⁇ H) 2, AgC and AgB r, Ag l, Ag l
- the method of forming the porous second support layer includes a method of directly supporting the poorly water-soluble substance on the surface of the titanium dioxide fine particles having the first support layer containing a calcium compound, and a method of forming the porous second support layer. Any of the methods of contacting or supporting a precursor of a soluble substance and converting the precursor into the above-mentioned poorly water-soluble substance can be adopted. Representative examples of the method of forming the second support layer include the following three methods.
- a material capable of forming a sparingly water-soluble substance which is substantially inactive as a photocatalyst on the surface of titanium dioxide fine particles having the above-mentioned first supporting layer containing a calcium compound for example, a silicone oligomer or A method of attaching a silane coupling material, drying and drying or baking to convert the material into the hardly water-soluble substance, and form a second support layer containing the hardly water-soluble substance.
- Preferred examples of the material capable of forming a substantially water-insoluble substance which is substantially inactive as a photocatalyst include a silicone oligomer or a silane coupling material. I can do it. By depositing these materials, drying and / or calcining, the materials are converted to silica, forming a second support layer containing porous silica.
- the titanium dioxide fine particles having the first support layer are brought into contact with an aqueous solution of sodium aluminate, and then the aqueous solution is neutralized by adding an inorganic acid, and porous alumina is deposited to deposit porous alumina.
- a carrier layer is formed.
- metal alkoxide used in this method examples include zirconium n-butoxide, aluminum triethoxide, aluminum triisopropoxide, methyl silicate, ethyl silicate, silicon ethoxide, and zirconium isopropoxide.
- zirconium n-butoxide aluminum triethoxide, aluminum triisopropoxide, methyl silicate, ethyl silicate, silicon ethoxide, and zirconium isopropoxide.
- titanium dioxide fine particles having a first carrier layer are brought into contact with an alcohol slurry of zirconium n-butoxide, and ethylene glycol and water are added to the slurry and hydrolyzed to deposit porous zirconia. A quality second carrier layer is formed.
- the method for forming the second support layer as described above can be repeated to form a porous second support layer having two or more layers.
- the weight of the porous second carrier layer is preferably from 0.01 to 50% by weight, more preferably from 0.1 to 20% by weight, based on the weight of titanium dioxide. If less than 0.01% by weight is added to plastics as a medium, the durability as a photocatalyst Worse. On the other hand, if the content is more than 50% by weight, the photocatalytic function is reduced, and the cost is increased.
- the titanium dioxide photocatalyst powder having an environmental purification function of the present invention has at least one metal selected from the group consisting of platinum, rhodium, ruthenium, palladium, silver, copper, zinc, and the like supported on the surface thereof. You may. When such metals are supported, the rate of oxidative decomposition of chemical substances by photocatalysis by titanium dioxide is further increased, and sterilization and algicidal actions are also increased. These metals are supported on the surface of the raw titanium dioxide fine particles, on the surface or layer of the first supporting layer containing a calcium compound, or on the surface or layer of the porous second supporting layer containing a poorly water-soluble substance. Any may be done. The loading of these metals may be carried out by a conventional method, and the loading amount is usually selected in the range of 0.001 to 10% by weight based on the weight of the titanium dioxide photocatalyst powder.
- the titanium dioxide photocatalyst powder of the present invention can be used as a medium as a polymer composition by being added to all kinds of organic polymers.
- organic polymer thermoplastic synthetic resins, thermosetting synthetic resins, natural resins, and the like are widely used, and the types thereof are not particularly limited. Since the titanium dioxide photocatalyst powder of the present invention has the first support layer and the second support layer on the surface, when added to the organic polymer, the organic polymer directly contacts the surface of the titanium dioxide fine particles. The decomposition of the organic polymer does not occur due to the photocatalytic activity of the titanium dioxide fine particles.
- organic polymer used as a medium examples include polyethylene, polyamide, polyvinyl chloride, polyvinylidene chloride, polyester (polyethylene terephthalate, aramide, thermosetting unsaturated polyester, etc.), polypropylene, and polyethylene oxide.
- the polymer composition comprising the organic polymer and the titanium dioxide photocatalyst powder of the present invention can be used as a material for environmental purification in the form of a paint, a coating composition, a compound, a masterbatch, and the like.
- concentration of the titanium dioxide photocatalyst powder in the organic polymer composition is usually 0.01 to 80% by weight, preferably 1 to 50% by weight, based on the total weight of the composition.
- an absorbent such as activated carbon for absorbing malodorous substances and harmful substances, or a zealite light may be added.
- a molded article having an environmental purification function can be obtained by molding the above polymer composition.
- molded articles of such a polymer composition include extruded articles such as fibers, films and sheets, and various injection molded articles and compression molded articles.
- the polymer composition of the present invention since the polymer composition of the present invention has excellent durability, it can be applied as a coating composition to structures such as walls, glass, signboards, and concrete. Further, the polymer composition of the present invention can be applied to an organic structure such as paper, plastic molded article, cloth and wood product, or a structure having a coating film such as a vehicle, The photocatalyst function can be fully exhibited without destroying the coating film.
- the method 2.8 L of the titanium dioxide slurry obtained above and 3.5 L of the salt solution were mixed, and further kept at a temperature of 40 ° C for 24 hours. Thereafter, the slurry was filtered and washed (using an adept technical membrane filter, pore size 0.2 im, used) and dried at 120 ° C for 4 hours to obtain 100 g of fine powder of titanium dioxide having calcium phosphate supported on the surface.
- the obtained fine powder of titanium dioxide having a calcium phosphate-supporting layer on the surface was mixed with a blender (Warling), and 20% of a silicone oligomer (AFP-1 manufactured by Shin-Etsu Chemical Co., Ltd.) was sprayed thereon.
- the obtained mixed powder was dried in the air at 120 for 2 hours, and then fired at 500 ° C for 10 hours. As a result of chemical analysis, the obtained powder was found to carry 1% of calcium phosphate and 10% of porous silica.
- 3.5 g of the obtained fine powder of titanium dioxide having a porous silica-supporting layer was placed in a 9 Ommci) petri dish, and then placed in a 5 L Tedlar bag containing acetoaldehyde having an initial concentration of 40 ppm. Irradiation was performed with black light at 365 nm of ultraviolet light so as to have an intensity of 0.23 mWZcm 2 .
- the concentration of acetoaldehyde was measured with a detector tube, and the residual ratio of acetoaldehyde was 5%.
- a urethane resin for fiber coating (Rubipearl 4100, manufactured by Toyo Polymer Co., Ltd.) was mixed with 20% of the above-mentioned fine powder of titanium dioxide having a porous silica-supporting layer, and the mixture containing the photocatalyst was mixed. Ting agent was prepared. The obtained coating agent was applied to glass with a thickness of 50 im to form a coating film, which was irradiated with ultraviolet rays of 5 OmWZcm 2 , and the residual ratio of the coating film after 100 hours was measured. As a result of the measurement, the residual ratio was 93%.
- 0.6 g of a commercially available polycarboxylic acid type polymer surfactant (manufactured by Kao Corporation, trade name: BOYS 530) is added to 2.8 L of pure water, and titanium dioxide ultrafine particles (Showa Taiyu Nimu ( 120 g of F4, manufactured by Co., Ltd., having an average primary particle size of 0.03 ⁇ m, was dispersed to obtain a titanium dioxide slurry.
- Example 2 Using the same method as in Example 1, a titanium dioxide fine powder having a porous silica-supporting layer on its surface was prepared for the obtained calcium salt-supported titanium dioxide fine powder, and a coating film was prepared and evaluated. did. Table 1 shows the results. Analysis of the calcined coating film by infrared absorption spectroscopy (FT-IR method) revealed that the calcium salt of the surfactant had disappeared, and that calcium ions were converted to calcium oxide during the calcining process. Can be
- Example 1 50 g of titanium dioxide fine powder having a calcium phosphate supporting layer obtained in the same manner as in Example 1 and 0.02 mol of sodium aluminate were added to 70 Oml of pure water to obtain a titanium dioxide slurry. 0.06 mol of dilute sulfuric acid was added dropwise to the obtained slurry, adjusted to pH 7.2, filtered, washed, and dried (120, 4 hours). Titanium dioxide having a porous alumina-supported layer on its surface A fine powder was obtained. A coating film was prepared and evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Ethylene glycol 2 mo 1 and water 72 m 1 were added to a slurry obtained by mixing 50 g of titanium dioxide fine powder having a calcium phosphate supporting layer obtained by the same method as in Example 1, zirconium n-butoxide lmo 1 and ethanol 2.5 L. And hydrolyzed. The obtained slurry was filtered, washed, and dried (120 ° C, 4 hours) to obtain a fine titanium dioxide powder having porous zirconia on the surface.
- a coating film was prepared in the same manner as in Example 1 and evaluated. Table 1 shows the results.
- Example 4 Except that the fine powder of titanium dioxide having a calcium phosphate supporting layer used in Example 4 was changed to the fine powder of titanium dioxide supporting a calcium salt of a polymer surfactant obtained by the same method as in Example 2, In the same manner as in Example 4, the porous zircon A fine powder of titanium dioxide supporting nitro was prepared, and a coating film was prepared and evaluated. Table 1 shows the results. In Table 1, the calcium salt of the polymer surfactant is referred to as calcium polycarboxylate.
- the titanium dioxide fine powder having a calcium phosphate-supporting layer obtained by the same method as in Example 1 was used without forming a porous silica-supporting layer.
- a coating film was prepared and evaluated in the same manner. Table 1 shows the results.
- Titanium dioxide fine powder carrying a calcium salt of a polymeric surfactant (before treatment with a silicone oligomer) obtained by the same method as in Example 2 was calcined at 500 for 10 hours, and calcium oxide was carried.
- a titanium dioxide fine powder having a layer was obtained.
- a coating film was prepared and evaluated by the same method as in Example 1 without forming a porous silica supporting layer. Table 1 shows the results.
- Example 3 A method similar to that of Example 3 using ultrafine titanium dioxide powder (F-4, manufactured by Showa Taiyu Niimu Co., Ltd., average particle diameter of primary particles: 0.03 ⁇ m) without forming a calcium phosphate supporting layer. Titanium dioxide fine powder with porous alumina support layer Powder was prepared, and a coating film was further prepared and evaluated. Table 1 shows the results.
- Example 1 A method similar to that of Example 1 using ultrafine titanium dioxide powder (F-4, manufactured by Showa Taiyu Nihon Co., Ltd., average particle diameter of primary particles: 0.03 ⁇ m) without forming a calcium phosphate supporting layer.
- a silicone oligomer was treated to prepare a titanium dioxide fine powder having a porous silicon-carrying layer, and a coating film was prepared and evaluated. Table 1 shows the results.
- Example 4 A method similar to that of Example 4 using ultrafine titanium dioxide powder (F-4, manufactured by Showa Taiyu Niimu Co., Ltd., average particle diameter of primary particles: 0.03 ⁇ m) without forming a calcium phosphate supporting layer.
- a titanium dioxide fine powder having a porous zirconium-supporting layer was prepared, and a coating film was prepared and evaluated. Table 1 shows the results.
- Table 1 Porous sparingly soluble calcium compound acetaldehyde Coating film residual carrier layer Material carrier layer Residual rate (%) Rate (%)
- Example 1 Calcium Phosphate Silica 59 3
- Example 2 Calcium Oxide Silica 39 2
- Example 3 Calcium Phosphate Alumina 2 0 95 5
- Example 4 Calcium Phosphate Zirconia 1 5 8 8
- Example 5 Polycarboxylic Acid Zirconia 1 3 9 0
- Comparative Example 4 Calcium Oxide 5 2 Comparative Example 5 — Alumina 7 0 8 5 Comparative Example 6 — Silica 1 0 6 0 Comparative Example 7 — Zirconia 5 0 6 8 As seen in Table 1, the calcium compound supporting layer and the porous material
- the photocatalyst powder of the present invention (Examples 1 to 5) having a low water-soluble substance-bearing layer has a high photocatalytic performance (the residual ratio of acetoaldehyde is small), and can be used for a long time after being used for a long time. Deterioration effect is small (residual coating rate is large).
- Photocatalyst powders having only a calcium compound-supporting layer show high photocatalytic performance, but show significant deterioration of the plastic coating medium after long use.
- the photocatalyst powder having only the porous poorly water-soluble substance-supporting layer has low photocatalytic performance (porous silica). (With the exception of Comparative Example 6), but the deterioration of the plastic coating medium after prolonged use is also relatively large).
- the titanium dioxide photocatalyst powder of the present invention exhibits a photocatalytic action by irradiating light, removes offensive odors, decomposes and removes harmful substances or dirt in the air, wastewater treatment and water purification treatment, antibacterial, antibacterial and antifungal properties. Widely used for purifying water. In addition, this environmental purification can be performed effectively, economically and safely.
- This titanium dioxide catalyst powder is applied to fibers, paper, plastic molded products, etc., or is kneaded into a fiber or plastic medium during the manufacturing process of fibers, plastic molded products, etc., or is in the form of paint, etc. Can be used.
- the photocatalytic performance is excellent in durability without causing deterioration of the medium.
- the titanium dioxide photocatalyst powder of the present invention has a support layer of a calcium compound and a porous support layer of a hardly water-soluble substance which is inactive as a photocatalyst, it is used in combination with an organic polymer as a medium.
- the high photocatalytic action of the titanium dioxide particles lasts for a long time without causing deterioration of the medium.
- the titanium dioxide catalyst powder of the present invention exhibits exceptional durability under a strong light irradiation environment such as sunlight.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU68764/00A AU6876400A (en) | 1999-09-08 | 2000-09-08 | Particulate titanium dioxide photocatalyst, process for producing the same, and applications thereof |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25433599 | 1999-09-08 | ||
JP11/254335 | 1999-09-08 | ||
US15695599P | 1999-09-30 | 1999-09-30 | |
US60/156,955 | 1999-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001017680A1 true WO2001017680A1 (fr) | 2001-03-15 |
Family
ID=26541637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/006152 WO2001017680A1 (fr) | 1999-09-08 | 2000-09-08 | Photocatalyseur de dioxyde de titane particulaire, procede de production dudit photocatalyseur et applications en decoulant |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU6876400A (fr) |
WO (1) | WO2001017680A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006055836A (ja) * | 2004-07-22 | 2006-03-02 | Toyota Central Res & Dev Lab Inc | 無機酸化物、排気浄化用触媒担体及び排気浄化用触媒 |
WO2008018178A1 (fr) * | 2006-08-10 | 2008-02-14 | Mitsui Chemicals, Inc. | Photocatalyseur, son procédé de production, dispersion de photocatalyseur contenant le photocatalyseur et composition de revêtement de photocatalyseur |
US7910513B2 (en) | 2003-12-25 | 2011-03-22 | Taiyo Kogyo Corporation | Photocatalyst sheet and methods of welding and manufacturing the same |
US8242046B2 (en) | 2004-07-22 | 2012-08-14 | Toyota Jidosha Kabushiki Kaisha | Inorganic oxide, exhaust gas purifying catalyst carrier, and exhaust gas purifying catalyst |
US10023479B2 (en) | 2013-06-12 | 2018-07-17 | Samsung Electronics Co., Ltd. | Capacitive deionization apparatus and methods of treating a fluid using the same |
JP2018144004A (ja) * | 2017-03-08 | 2018-09-20 | 旭化成株式会社 | 光触媒用無機化合物、光触媒組成物、光触媒塗膜及び光触媒塗装製品 |
US10584043B2 (en) | 2012-11-29 | 2020-03-10 | Samsung Electronics Co., Ltd. | Capacitive deionization apparatus and methods of treating fluid using the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10174881A (ja) * | 1996-10-18 | 1998-06-30 | Ishihara Sangyo Kaisha Ltd | 光触媒体及びその製造方法 |
JPH10244166A (ja) * | 1997-03-03 | 1998-09-14 | Agency Of Ind Science & Technol | 環境浄化材料及びその製造方法 |
US6090736A (en) * | 1997-12-25 | 2000-07-18 | Agency Of Industrial Science And Technology | Photocatalytic powder for environmental clarification and process for producing same, said powder-containing polymer composition, and shaped article of said composition and process for producing same |
-
2000
- 2000-09-08 AU AU68764/00A patent/AU6876400A/en not_active Abandoned
- 2000-09-08 WO PCT/JP2000/006152 patent/WO2001017680A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10174881A (ja) * | 1996-10-18 | 1998-06-30 | Ishihara Sangyo Kaisha Ltd | 光触媒体及びその製造方法 |
JPH10244166A (ja) * | 1997-03-03 | 1998-09-14 | Agency Of Ind Science & Technol | 環境浄化材料及びその製造方法 |
US6090736A (en) * | 1997-12-25 | 2000-07-18 | Agency Of Industrial Science And Technology | Photocatalytic powder for environmental clarification and process for producing same, said powder-containing polymer composition, and shaped article of said composition and process for producing same |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7910513B2 (en) | 2003-12-25 | 2011-03-22 | Taiyo Kogyo Corporation | Photocatalyst sheet and methods of welding and manufacturing the same |
JP2006055836A (ja) * | 2004-07-22 | 2006-03-02 | Toyota Central Res & Dev Lab Inc | 無機酸化物、排気浄化用触媒担体及び排気浄化用触媒 |
JP4545651B2 (ja) * | 2004-07-22 | 2010-09-15 | 株式会社豊田中央研究所 | 無機酸化物、排気浄化用触媒担体及び排気浄化用触媒 |
US8242046B2 (en) | 2004-07-22 | 2012-08-14 | Toyota Jidosha Kabushiki Kaisha | Inorganic oxide, exhaust gas purifying catalyst carrier, and exhaust gas purifying catalyst |
WO2008018178A1 (fr) * | 2006-08-10 | 2008-02-14 | Mitsui Chemicals, Inc. | Photocatalyseur, son procédé de production, dispersion de photocatalyseur contenant le photocatalyseur et composition de revêtement de photocatalyseur |
US10584043B2 (en) | 2012-11-29 | 2020-03-10 | Samsung Electronics Co., Ltd. | Capacitive deionization apparatus and methods of treating fluid using the same |
US10023479B2 (en) | 2013-06-12 | 2018-07-17 | Samsung Electronics Co., Ltd. | Capacitive deionization apparatus and methods of treating a fluid using the same |
JP2018144004A (ja) * | 2017-03-08 | 2018-09-20 | 旭化成株式会社 | 光触媒用無機化合物、光触媒組成物、光触媒塗膜及び光触媒塗装製品 |
Also Published As
Publication number | Publication date |
---|---|
AU6876400A (en) | 2001-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW539579B (en) | Photocatalytic titanium dioxide powder, process for producing same, and applications thereof | |
KR100397659B1 (ko) | 환경정화용 광촉매 분체, 그 분체함유 중합체 조성물 및그것의 성형품 및 그것들의 제조방법 | |
JP2918787B2 (ja) | 光触媒体およびその製造方法 | |
KR100518956B1 (ko) | 광촉매활성과 고흡착성을 동시에 가지는 광촉매 코팅용 졸 | |
JP3959213B2 (ja) | 酸化チタン、それを用いてなる光触媒体及び光触媒体コーティング剤 | |
WO2000046153A1 (fr) | Procede de production d'oxyde de titane du type anatase et d'un materiau de revetement a base de dioxyde de titane | |
EP2316568A1 (fr) | Particules de photocatalyseur contenant des Phosphates condensés | |
JP2832342B2 (ja) | 光触媒粒子及びその製造方法 | |
JP3949055B2 (ja) | 高活性光触媒 | |
JP3493393B2 (ja) | 環境浄化用光触媒粉体、該粉体含有重合体組成物およびその成形品、ならびにそれらの製造方法 | |
US6407156B1 (en) | Photocatalytic titanium dioxide powder, process for producing same, and applications thereof | |
JP2006341250A (ja) | 高活性光触媒 | |
JP2017523913A (ja) | 光触媒機能性フィルム及びこの製造方法 | |
JPH11290692A (ja) | 光触媒及びその製造方法並びに光触媒含有成形体及びその製造方法 | |
JP2945926B2 (ja) | 光触媒粒子及びその製造方法 | |
JP2002001125A (ja) | 光触媒粉体及びスラリーならびに該粉体を含む重合体組成物、塗工剤、光触媒機能性成形体、光触媒機能性構造体 | |
JP2004250239A (ja) | 活性管状酸化チタン粒子、該酸化チタン粒子を含む触媒および消臭剤 | |
JP3484470B2 (ja) | 光触媒機能を有するフィルム素材 | |
WO2001017680A1 (fr) | Photocatalyseur de dioxyde de titane particulaire, procede de production dudit photocatalyseur et applications en decoulant | |
JP2004243307A (ja) | 高活性光触媒粒子およびその製造方法ならびにその用途 | |
JPWO2002053285A1 (ja) | 光機能性粉体及びその用途 | |
JP3903167B2 (ja) | 活性酸素発生材料 | |
JP2001106974A (ja) | 光触媒複合体、光触媒層形成用塗布液および光触媒担持構造体 | |
JPH105598A (ja) | 光触媒粉体およびそれを用いた光触媒体ならびにそれらの製造方法、それらを用いた環境浄化方法 | |
JP4079306B2 (ja) | 光触媒粉体、その製造方法およびその応用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2001 521462 Kind code of ref document: A Format of ref document f/p: F |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase |