TW471981B - Photocatalytic powder for environmental clarification and producing process thereof, polymer composition, polymer-shaped article and producing process thereof - Google Patents

Abstract

A photocatalytic powder for environmental clarification, comprising finely divided titanium dioxide particles having a coating of porous calcium phosphate formed on at least part of the surface of each titanium dioxide particle, wherein an anionic surface active agent is present at least on the interface between said coating of porous calcium phosphate and the titanium dioxide particle. This photocatalytic powder is produced by dispersing finely divided titanium dioxide particles in an aqueous slurry containing an anionic surface active agent, and then coating at least part of the surface of each titanium dioxide particle with porous calcium phosphate. This photocatalytic powder is used, for example, by supporting it in an organic polymer shaped article.

Description

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 '~~~ ------ B7___ V. Description of the invention ("', this invention is about a photocatalyst powder for environmental purification and its manufacturing method, containing the powder Polymer composition, molded product of the polymer composition, and manufacturing method of the molded product are used as environmental purification materials. The village material can be used to remove malodor, decompose and remove harmful substances in the air, and dirt. Three drainage treatment and water purification treatment, or water sterilization and algicide, etc. 'In particular, it is best to leave the user by infiltrating or burying organic fibers and plastics, etc. ~ It is used to prevent malodor and even remove or The method of removing harmful * shellfish from the air is often a method of absorbing liquid or sorbent absorbed in acid and test, but this method is a problem in the treatment of waste liquid and sorbent after use. Pollution risk. Also, there are methods to use odorants to mask the malodor, but there is a disadvantage of food being stained with odorants and hurting ^ fragrances themselves (refer to, for example, Nishida Konosuke (1, Encyclopaedia of Encyclopedia, Ping Fansha, pl36 (1984)). When light is irradiated on titanium oxide, electrons with strong reducing action and holes with strong oxidizing action will be generated, which will come in contact. The molecular species are decomposed by oxidation-reduction. If the effect of the titanium oxide is through photocatalyst, it can dissolve environmental pollutants such as organic solvents, pesticides and surfactants in water, harmful substances in the air, and malodor. Decomposition and removal. This method can be used repeatedly using only titanium oxide and light. The reaction product is harmless carbon dioxide, etc. Compared with biological treatment using microorganisms, it has temperature, pH, gas, and toxicity. There are fewer restrictions on reaction conditions, and it is easy to decompose and remove even organic halides and organophosphorus compounds that are difficult to handle in biological treatment. The paper size applies Chinese National Standard (CNS) A4 specifications. (21Q X 297 male cage)

-Installed / ---- ^ --------- (Please read the precautions on the back before filling this page) n H · 4 471981 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (2) 〇 However, in the research that has been performed so far by using titanium dioxide photocatalyst to decompose and remove organic matter, the original appearance of titanium dioxide used as photocatalyst powder (refer to (A 如 .Prnden and DFOllis, Journal of Catalysis) 82 Vol. 404 (1983); (H_Hidaka, H. Jou, K. Nohara, J. Zhao, Chemosphere) Vol. 25 1589 (1992); Kubo Huiming, Harada Kenji, Tanaka Keiichi, Industrial Water, No. 379 12 (1990)). Therefore, it is very difficult to recover the photocatalyst after use, and it is also difficult to handle and use, so it is difficult to achieve. I tried to use a medium that can mix titanium dioxide photocatalyst with easy-to-handle fibers and plastics. By using this powerful photocatalyst, not only harmful organic substances and environmental pollutants, but also fibers and plastics are easily decomposed and deteriorated. It is difficult to use it in a form mixed with fiber and plastic. In Japanese Patent Application Laid-Open No. 9-239277, a photocatalyst carrier is proposed in which a photo-inert compound such as aluminum, silicon, zirconium, or the like is supported on the surface of titanium dioxide in an island shape. However, this method of supporting, that is, the method of treating the surface of titanium dioxide with a photo-inert compound such as aluminum, silicon, zirconium, etc., is originally a catalyst that can greatly reduce titanium dioxide in the field of cosmetics or pigments. Activity developed for the purpose, but the paradox is that when you want to suppress the reaction of titanium oxide with fiber or plastic, it also greatly reduces the role as a photocatalyst. In addition, when the surface-treated titanium dioxide is used as a photocatalyst and used as an antibacterial and anti-mold material, the bacteria are difficult to attach to the photocatalyst under flowing water. Therefore, the photocatalyst effect is difficult to exert, the efficiency is poor, and it is durable. Sexual problems. In view of the problems of the above-mentioned conventional technology, the purpose of the present invention is that the paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) ------------- Install --------. Order --------- line (please read the unintentional matter on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 471981 V. Invention Note (3) is to provide a kind of environmental purification powder, which can effectively and economically remove malodor, decomposition and removal of harmful substances or sweat in the air, drainage treatment and purification treatment, antibacterial and anti-mold environment. For purification, especially when organic polymer media such as organic fibers and plastics are infiltrated or buried, it will not cause degradation of the media when it is carried and used, and it also shows excellent photocatalytic effect from the aspect of durability. Another object of the present invention is to provide a method for manufacturing the aforementioned photocatalyst powder for environmental purification. Another object of the present invention is to provide an organic polymer composition containing the precursor powder for environmental purification. Another object of the present invention is to provide a molded product made of the organic polymer composition and a method for manufacturing the molded product. In order to achieve the above purpose, the inventors repeated the results of intensive research and found that: firstly, the titanium dioxide is dispersed in an aqueous suspension containing an anionic surfactant, and then the titanium dioxide is transmitted through the entire surface or one of the surfaces of the titanium dioxide fine particles; The coating of calcium phosphate is formed on the part, and a durable calcium phosphate coating can be obtained. Because the coating has the property of attracting miscellaneous bacteria, etc., and is porous, it does not damage the photocatalytic function of titanium dioxide, and it is also used for carrying In the case of media such as organic polymers, the durability of the media can be greatly improved to complete the present invention. Therefore, according to the present invention, a photocatalyst powder for environmental purification can be provided. It is characterized by being a powder formed by forming a coating layer of porous calcium phosphate on at least a part of the surface of emulsified chitosan particles, and the porous phosphoric acid dances with The surface of the coating layer and titanium dioxide particles has at least an interface

This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ------------ installation -------- order --------- line 'V (Please read the precautions on the back before filling out this page) 471981 Consumption of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs? 1 Print A7-V. Description of the invention (4) Ionic interface activity Qi J. The invention can provide a method for producing a photocatalyst powder for environmental purification, which is characterized in that the titanium dioxide fine particles are dispersed in an aqueous suspension containing an anionic surfactant, and then at least a part of the surface of the fine particles is porous. Covering of calcium phosphate. According to the present invention, a polymer composition can be provided, which is composed of an organic polymer and the above-mentioned photocatalyst powder for environmental purification which accounts for 001 to 80% by weight based on the total weight of the composition. According to the present invention, it is possible to provide a polymer molded product which is formed by molding a polymer composition and has an environmental purification function. According to the present invention, a method for manufacturing a polymer molded product is provided. Combining the above polymers Those mixed in an extruder and extruded through the extruder and having environmental purification functions. The best embodiment for implementing the present invention and the photocatalyst powder for environmental purification of the present invention are characterized by, An anionic surfactant is present at least on the interface between the coating layer of the titanium dioxide fine particles and at least a portion of the porous calcium phosphate formed on the surface. The anionic surfactant is usually not only present in the titanium dioxide fine particles and the surface formed on the surface. The interface of the covering layer of porous calcium phosphate also exists in the covering layer of porous filling acid # 5. The titanium dioxide microparticles used to purify the photocatalyst powder for this kind of environment have high performance as photocatalyst. The crystal form preferably has anatase as the main component. The titanium dioxide fine particles used in the present invention, and the average paper size of the primary particles is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---- --------- install ------- -order --------- line (please read the precautions on the back before filling this page) 7 A7

1 I I Line 471981 Printed by the Consumer Property Cooperation Bureau of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention (6) These can be used alone or in combination. After the suspension containing the anionic surfactant is processed in advance, in the step of forming a porous calcium phosphate coating layer, the precipitation reaction speed of the calcium phosphate is increased, and the precipitation can be completed in a short time. The presence of an anionic surfactant at the interface improves the adhesion of the calcium phosphate coating to titanium dioxide particles. The amount of the surfactant in the aqueous suspension containing the anionic surfactant is preferably 0.02 to 20 parts by weight and more preferably 1 to 10 parts by weight relative to 100 parts by weight of titanium dioxide. When the relative amount of the anionic surfactant is less than 0.2 parts by weight, the effect of the surfactant as a surfactant is difficult to be exhibited, and the adhesion and even the staying power of the porous calcium dishate are reduced. On the other hand, if it is more than 20 parts by weight, the effect depending on the amount added cannot be displayed, and it is not practical from an economical standpoint. After being dispersed in an aqueous suspension containing an anionic surfactant, a porous, calcium phosphate coating is formed on at least a portion of the surface of the nitric oxide particles. When forming a covering of porous calcium phosphate, the usual method is to contact mimic body fluids containing at least calcium ions and phosphate ions with titanium dioxide microparticles to 'precipitate on the surface of the microparticles and fill them with acid feed.' The use of mimic body fluids means that the scaly acid triangle is a processing liquid that is firstly represented by various structural formulas, such as

Naa, NaHC03, Kα, K2, P04 · 3, 20, MgCl2.6H20, CaC1, NaaSO4 or NaF, etc. are dissolved in water 'to prepare the processing fluid. In addition, HC1 and (CHzOHhCNH2, etc.) are used to adjust the pH value to 7 ~ 8, especially 7 4 which is the standard of Chinese paper (CNS) A4 (210 X 297). ----- ^ --------- --------- (Please read the notes on the back before filling out this page) 9 471981 A7 B7 V. Invention Description (7) Good. The Ca2 + ion concentration of the mimic body fluid used here should preferably be 0 ~ 50mM, and the phosphate ion concentration should be o.uomM. If the Ca2 + ion concentration and the scale acid ion concentration are thinner than this range, the conversion of scale acid will precipitate. It takes time. On the other hand, if the concentration is higher than this range, the formation will be easily generated and excessive, and it is difficult to control the porosity and the thickness of the film layer. Porous calcium phosphate formed by ions is sufficient. These are compounds with Ca9 (p〇4) 6 as the basic unit. In this specific example, there are the third calcium phosphate Ca3 (p04) 2, and hydroxyapatite Ca10. (PO4) 6 (OH) 2 'second calcium phosphate 2 water salt CaHP04 2H20, octacalcium phosphate Ca8H7 (P〇4) 6.5H20, tetracalcium phosphate Ca40 (P04) 2, etc. Hydroxyl Base apatite is preferred, especially amorphous hydroxyapatite is more preferred. There is no special requirement for this covering form, but it is better to cover the surface of titanium dioxide as much as possible. Porosity on the surface of titanium dioxide particles The amount of linolenic acid is based on the weight of titanium dioxide microparticles, and is preferably about 0.001 to 50% by weight. If the amount of porous filling acid # 5 is too small, the source of malodor caused by the porous linoleic acid The adsorption amount of substances will decrease, and the decomposition and removal efficiency of these substances will be reduced. In addition, the supporting medium of the photocatalyst powder will be deteriorated, and the continuity of the photocatalyst function will be reduced. When the amount is too large, it will be difficult to fully express titanium dioxide. Photocatalyst function. Finally, the titanium dioxide suspension that has been covered with porous calcium phosphate is dried to obtain a photocatalyst powder for environmental purification. The photocatalyst powder for environmental purification of the present invention can also be carried on the surface of the microparticles Metals with platinum 'money, ruthenium, silver' copper, iron, zinc, etc. The size of this paper applies to Chinese National Standard (CNS) A4 (210 X 297 Mm) ------------ > Loading --- (Please read the notes on the back before filling out this page) Order · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 10 Consumption of Employees of the Property Bureau Du printed 471981 A7 B7 5. Inventor (8). At this time, the oxidative decomposition rate of the chemical substance will become greater, and the bactericidal and algicidal effects will be greater. Also, the load of metal The titanium dioxide fine particles, which are raw materials before the covering treatment, can also be carried out. The photocatalyst powder for environmental purification according to the present invention is porous because the calcium phosphate film covering the surface of the fine particles is present in the pores, which is not covered by the titanium dioxide surface. Partly, in this part, under the light irradiation, the environmental purification catalyst effect of titanium dioxide is caused. That is, under the irradiation of light, by the redox effect of electrons and holes generated by the photocatalyst powder described above, organic substances and harmful substances in the air that form a malodor source absorbed by calcium phosphate can be easily dissolved or dissolved. Decomposition and removal of organic compounds contaminated by organic solvents and pesticides in water. In addition, the durable porous calcium phosphate film obtained by the above method is used to prevent direct contact between titanium dioxide and the media. Therefore, even if the photocatalyst powder for environmental purification is added to organic polymers such as organic fibers and plastics through mixing, etc. When the media is used, the photocatalyst effect can be sustained for a long time because the fibers and plastics are difficult to decompose and cause degradation. 'Because the porous calcium phosphate film has properties of absorbing miscellaneous bacteria, proteins, amino acids, bacteria in water or air, viruses, organic substances forming foul-smelling sources, nitrogen oxides, etc., it is generated by the irradiation of light in titanium dioxide. Strong oxidizing power can reliably and effectively eliminate the absorbed bacteria and other bacteria. As the light source for light irradiation, artificial light such as fluorescent lamp, incandescent lamp, black lamp, UV lamp, mercury lamp, xenon lamp, halogen lamp, metal halide lamp, and sunlight can be used. Furthermore, by the irradiation of light, the redox effect of the electrons and holes generated by titanium dioxide can be applied to the paper size absorbed by the porous calcium phosphate film in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 11 --- I ----- III- -III ----- Order · ----- 1 f I (Please read the precautions on the back before filling this page) Inch / 丄 夕 〇 丄 inch / 丄Xi〇 丄 printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ------- B7______ V. Description of the invention (9) Proteins and amino acids, bacteria, viruses, etc. are quickly and continuously decomposed and removed. In particular, when the above-mentioned photocatalyst powder for environmental purification is used by being mixed or buried in organic polymer media such as organic fibers and plastics, the above-mentioned organic fibers and plastics will not be decomposed, and odors and nitrogen oxides are absorbed. Harmful substances in the air, or organic compounds that pollute the environment, such as organic solvents and pesticides dissolved in water, fluorescent lamps, incandescent lamps, black lamps, u > v lamps, mercury lamps, xenon lamps, _ prime lamps, Irradiation of artificial light and sunlight from metal oxide lamps, etc., can be quickly and continuously decomposed and removed by the redox effect of electrons and holes generated by titanium dioxide. And this effect can be obtained as long as it is irradiated with light, so it can be used at low cost, saves resources, and requires no maintenance. -When titanium dioxide particles are used to carry metals such as platinum, rhodium, ruthenium, silver, copper, iron, zinc, etc., the catalyst can be used to enhance the decomposition and removal of organic compounds, and the environmental purification such as bactericidal and anti-mold effects. effect. The photocatalyst powder for environmental purification of the present invention can be applied to organic fibers and plastic molded products formed from various types of organic polymers, among which organic polymers such as polyethylene, nylon, polyvinyl chloride, polyvinylidene chloride, Polyester, polypropylene, polyethylene oxide, polyethylene glycol, polyethylene terephthalate, evening tree, polyvinyl alcohol, vinyl condensation resin, polyacetic acid, resin, peroxy resin, vinyl ester resin, Cellulose, cellulose derivatives, polyamide 'polyurethane, polycarbonate, polyethylene, urea resin, fluororesin, polyvinylidene fluoride, phenol resin, pseudo ivory, chitin, starch layer, etc. To shape the above-mentioned photocatalyst powder and organic polymer, and install the ----------- * ^ --------- line, (Please read the precautions on the back before filling in this page)

Specifications of this paper · 471981 Made by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (10) Polymer molded products with environmental purification function. Generally, in the manufacturing process of organic fiber and plastic molded products, it is carried by mixing and embedding the photocatalyst powder. It is particularly suitable to use an extruder to mix organic polymers and photocatalyst powders through extrusion molding to obtain a polymer molded product having an environmental purification function. The concentration of the photocatalyst powder in the polymer composition formed by the photocatalyst powder and the organic polymer is based on the weight of the composition, usually 0.01 to 80%, particularly preferably 1 to 50%. Hereinafter, the photocatalyst powder for environmental purification according to the present invention will be specifically described by way of examples. In each of Examples and Comparative Examples, the photoactivity was measured by the following method. With reference to the research by Kato et al. (Journal of Industrial Chemistry 63,5,748-750 (1960)), in a closed fiscal heating glass reaction container with a capacity of about 100 mL, 20 mL of naphthalene and 0.02 g of titanium dioxide were sealed. The reaction was performed under oxygen. The temperature (40.1 ° C) was kept constant, and the ultraviolet absorption was irradiated to calculate the oxidation absorption rate through the liquid phase oxidation reaction of naphthalene. That is, the pressure in the reactor was read through a differential pressure meter for a predetermined time, and the pressure change (unit: mmH20 / min) was used as the oxygen absorption rate as the standard for light activity. Example 1 600 g of a commercially available polycarboxylic acid type polymer surfactant (Kao (Bay) Beez 530) was added to 250 L of pure water, and titanium dioxide ultrafine particles (F4 manufactured by Showa Teedarium (Stock)) -The average particle size of the secondary particles is 0.03 microns) 12 kg, and a dispersion treatment is applied. In addition, add NaCl, NaHP04, KH2P04, KC1 to pure water. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 13 ---------------- ----- Order · -------- (Please read the note on the back? Matters before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 471981 A7 B7_ V. Description of Invention (11)

MgCl2 * 6H20 and CaCl2 were used to make a mimic body fluid 350L, which was mixed with titanium dioxide suspension to make Na + 139mM, K + 2-8mM, Ca2 + 1.8mM, Mg2 + 0.5mM, Cr 144mM, HP04_ 1.lmM . 250 L of the titanium dioxide suspension obtained by the aforementioned method and 350 L of the mimic body fluid were mixed, and the temperature was maintained at 40 ° C. for 4 hours. When the amount of precipitated calcium phosphate was analyzed at the elapse of 4 hours, it was confirmed that the amount of the precipitate accounted for 90% by weight of the final amount of precipitation. After that, the suspension was dried to obtain 10 kg of a photocatalyst powder for environmental purification. The precipitate was analyzed, and the precipitate was a calcium phosphate containing hydroxyapatite. Using the obtained photocatalyst powder for environmental purification, the photoactivity of the oxidation reaction using naphthalene was measured to be 10.0 (ππηΗ20 / min), and it was found that the photocatalyst performance was very high. Next, 1 kg of this powder and polyvinyl titanate resin were used in a commercially available biaxial mixing extruder (KZW15-30MG manufactured by Technical Bell Corporation) to produce a mixture having a titanium dioxide concentration of 40% by weight. The obtained mixture was not colored, and it was judged that there was no deterioration of the resin. Practical Example 2 A sodium alkylnaphthalene sulfonate (Kao Berex NB-L) was used as the anionic surfactant, and the other was obtained in the same manner as in Example 1 to obtain a photocatalyst powder for environmental purification, and then passed 1 kg of powder and a polyvinyl titanate resin were used to produce a 20% by weight titanium dioxide mixture. The light activity of the obtained powder was 10.3, and the mixture was the same as in Example 1, and it was judged that it was not colored. Practical Example 3 Sodium hexametaphosphate (special grade reagent made by pure chemical (stock)) was used as the anionic surfactant, and the others were obtained in the same manner as in Example 1 to obtain the environmental clean paper. The paper size was applicable to Chinese National Standard (CNS) A4. Specifications (210 X 297 mm) 14 (Please read the notes on the back before filling out this page) Packing -------- Thread / 471981 Employees of the Intellectual Property Bureau of the Ministry of Economic Affairs, A7 B7 V5. Description of the invention (12) Photocatalyst powder for chemical conversion. Further, a mixture of 20% by weight of titanium dioxide was produced through 1 kg of the powder and a polyester resin. The obtained powder had a photoactivity of 10.9 (mmH2O / min). The mixture was also determined not to be colored. Practical Example 4 A substance having an average primary particle diameter of 0.06 micrometers (F2, manufactured by Showa Teedarim Co., Ltd.) was used as the titanium dioxide fine particles, and the photocatalyst powder for environmental purification was obtained in the same manner as in Example 1. The light activity of the obtained powder was 9.8 (mmH20 / min). In addition, as in Example 1, a mixture of 30% by weight of titanium dioxide was produced from the powder and the polyvinyl titanate resin, and it was judged that there was no coloration. Example 5 In Example 1, a mixture of titanium dioxide suspension and mimic body fluid was prepared to have Ca2 + of 0.9 mM and HP. / Is a mimetic body fluid composition of 9.6 mM, and other procedures were used to obtain a photocatalyst powder for environmental purification in the same procedure as in Example 1. Further, a titanium dioxide concentration of 25% by weight and a volume% mixture were prepared through the powder and the polyester resin. The light activity of the obtained powder was 11.1 (mmH20 / 'min). The mixture was also determined not to be colored. Comparative Example 1 In Example 1, dodecyltrimethylammonium chloride (Kao Kotamin 24P), which is a cationic surfactant, was used. The rest was the same as in Example 1 to obtain titanium dioxide. Ingredient powder. The powder had a photoactivity of 10.2 (mmH2O / min). However, when a mixture similar to that of Example 1 was prepared by this, the mixture was judged to be colored. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 15 ------------- installation --------, order ------ --- line (please read the note on the back? Matters before filling out this page) 471981 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the Invention (I3) Comparative Example 2 No surfactant was applied in Example 1 Add this to prepare 250L of titanium dioxide suspension. Thereafter, a mimic body fluid was prepared in the same manner as the ion concentration described in Example IX, and mixed with a titanium dioxide suspension. It was further heat-treated at 40 ° C for 24 hours. Even after heating for 24 hours, the precipitation of calcium phosphate was not completely completed. After the product is dried, a powder containing dioxin as a main component is obtained. The powder had a photoactivity of 115 (111111112 / min). Next, in the same manner as in Example 1, a mixture was tried through the powder and the polyvinyl titanate resin, and it was judged that the mixture was colored and the resin was deteriorated. Comparative Example 3 In 600 L of pure water, Ug of titanium dioxide ultrafine particles (average particle size of F4 secondary particles manufactured by Showa Tedrim Co., Ltd. 0.03 μm) was added and stirred, and then an aqueous sodium aluminate solution (Showa Denko SA20 (1919) made by (shares) is 1800 g, and 0.3 sulphuric acid is dripped while maintaining the state of 40 g so that the value of 1 to 11 becomes 7.5 for treatment. Next, the suspension was dried to obtain a powder having titanium dioxide as the main component and alumina-treated powder. The powder had a photoactivity of 8.5 (mmHaO / min), and the photoactivity was very low. In addition, the same mixture as in Example 1 was obtained using this powder, but it was judged that there was coloring. According to the environmental purification photocatalyst powder according to the present invention, porous calcium phosphate can reliably adsorb bacteria, proteins, amino acids, bacteria in the water or air, and viruses' to form organic substances, nitrogen oxides, etc. of malodorous sources, and Miscellaneous bacteria absorbed by light irradiation can be eliminated or decomposed reliably and effectively by the strong oxidizing power generated by titanium dioxide. Therefore, you can use ^, install --------, order ------------ line one f Please read the phonetic on the back first? Please fill in this page again for this matter} This paper size is suitable for financial and family care standards (CNS) A4 (210 X 297 public love) 16 471981 A7 B7 V. Description of the invention (14) Safely remove malodor, harmful substances in the air Decomposition and removal of dirt, drainage treatment and purification treatment, purification of antibacterial and anti-mold environments. In particular, when mixed and embedded, an organic polymer medium supported on organic fibers and plastic shaped articles is used and used without causing degradation of the polymer medium and exhibiting a photocatalytic effect of excellent durability. ------------- Installation -------- Order · -------- Line (Please read the precautions on the back before filling this page) Ministry of Economic Affairs Intellectual Property Bureau's consumer cooperation Du printed 17 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

Claims (1)

Bulletin Fix A8 B8 C8 D8 Sixth, the scope of application for patents No. 87121661 printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Consumption Cooperative, and the patent application of the ancient application of the patent application scope amendment to the scope of the patent application amendment date _ 90 years 2 pages 1. A photocatalyst for environmental purification The powder is characterized in that a porous calcium phosphate capping layer is formed on at least a part of the surface of the titanium dioxide residue, and the porous 4-acid coating layer and the titanium dioxide fine particles are δ β ^ to There is an anionic surfactant at the interface. 2. The silk media powder for environmental purification as claimed in the patent application, wherein the average particle diameter of the primary particles of the titanium dioxide fine particles is 0.001 to 0.02. 3. The photocatalyst powder for environmental purification, such as item 1 or 2 of the 11th patent of Shenqing, in which the -titanium oxide particles are a kind of powder, which is produced by gas phase reaction using titanium oxide as a raw material. Particles form it. 4. The photocatalyst powder for environmental purification according to item (1) of the scope of patent application, wherein the amount of the porous calcium phosphate is 0.01 to 50% by weight based on the weight of the titanium dioxide particles. 5. · A method for producing a photocatalyst powder for environmental purification, characterized in that the titanium dioxide fine particles are dispersed in an aqueous suspension containing an anionic surfactant, and then porous is formed on at least a part of the surface of the fine particles Covered by quality acid. 6. The method for producing a photocatalyst powder for environmental purification according to item 5 of the scope of the patent application, wherein the aqueous suspension used for the dispersion treatment of the titanium dioxide microparticles contains 002 to 20 weights relative to 100 parts by weight of the titanium dioxide. Parts of anionic surfactant. Κ Paper size applies to China National Standard (CNS) A4 specifications (210 χ 297 mm-II lilm — 1 — l · ij — lill — — — — ^ ^ i (Please read the notes on the back before filling this page) 18 471981 Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Consumption Cooperative Printing A8 B8 C8 D8 VI. Application for Patent Scope 7. For the manufacturing method of domain media powder for environmental purification, such as the scope of application for patent No. 5 or 6, wherein the titanium dioxide fine particles are primary particles The average particle diameter is 0.001 ~ 0.2 micron. 8. The manufacturing method of environmental catalyst photocatalyst powder according to item 5 or 6 of the patent application scope, wherein the titanium dioxide fine particles are a kind of powder, which uses titanium halide as raw material and gas On the contrary, it is made of sub-dispersed particles. 9. If the method of manufacturing a photocatalyst powder for environmental purification according to the scope of patent application No. 5 or 6, the method is to make a mimic body fluid containing at least calcium ions and phosphate ions. (Mimic body fluid) is in contact with the titanium dioxide fine particles, and the porous calcium phosphate is precipitated on at least a part of the surface of the titanium dioxide fine particles to form the coating. 10. The manufacturing method of the photocatalyst powder for environmental purification according to item 9 of the patent application scope, wherein the concentration of calcium ions in the mimic body fluid is from 0 to 50 mM, and the concentration of the dish acid ion is from 0.1 to 20 mM. '11 · A polymer composition comprising: an organic polymer; and a photocatalyst powder for environmental purification in the scope of application for patents No. 1 or 2. The photocatalyst powder is based on the total weight of the composition and accounts for 0.00%.丨 ~ 800 weight 0 / 〇. 12. A polymer molded product, which has the function of environmental purification, is formed by molding the polymer composition in the scope of the patent application No. 11. 13. Polymer A method for manufacturing a molded product. The polymer molded product has a function of environmental purification. The method is to knead a polymer composition in the range of patent application 丨 丨 in an extruder and extrude through the extruder. ---— — — — ill------ Order III · I I --- — (Please read the notes on the back before filling this page) 471981 A8 B8 C8 D8 Patent Application Forming. (Please read the notes on the back before filling this page) Order ----------- line! Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is sized for China National Standard (CNS) A4 (210 X 297 mm) 20