CN1264931C - Spherical zinc oxide and titanium dioxide composite particles with particle structures on surfaces, and preparation method and application thereof - Google Patents
Spherical zinc oxide and titanium dioxide composite particles with particle structures on surfaces, and preparation method and application thereof Download PDFInfo
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 156
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 75
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 61
- 239000011246 composite particle Substances 0.000 title claims abstract description 47
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 150000003751 zinc Chemical class 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 3
- 239000004038 photonic crystal Substances 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 22
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- 238000005253 cladding Methods 0.000 claims description 16
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- -1 alcohol amine compound Chemical class 0.000 claims description 12
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- 229910052751 metal Inorganic materials 0.000 claims description 8
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- 238000001291 vacuum drying Methods 0.000 claims description 7
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229960004418 trolamine Drugs 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 5
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical group [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
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- 238000003756 stirring Methods 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000004246 zinc acetate Substances 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000004065 semiconductor Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 4
- 230000007062 hydrolysis Effects 0.000 abstract description 3
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- 239000002131 composite material Substances 0.000 abstract 1
- 239000002537 cosmetic Substances 0.000 abstract 1
- 235000010215 titanium dioxide Nutrition 0.000 description 64
- 235000014692 zinc oxide Nutrition 0.000 description 50
- 238000005119 centrifugation Methods 0.000 description 8
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- DBJUEJCZPKMDPA-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O DBJUEJCZPKMDPA-UHFFFAOYSA-N 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
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- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 2
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 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
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- SEACYXSIPDVVMV-UHFFFAOYSA-L eosin Y Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C([O-])=C(Br)C=C21 SEACYXSIPDVVMV-UHFFFAOYSA-L 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
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Images
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
本发明属于无机半导体纳米复合材料制备领域，特别是涉及几个纳米至亚微米的表面具有微粒结构的球形氧化锌与二氧化钛复合颗粒及其制备方法和用途。用锌盐水解法制备表面具有微粒结构的氧化锌与二氧化钛均匀单分散复合颗粒，在作为内核的球形二氧化硅颗粒上包覆一层厚度为5～80纳米的二氧化钛层，再负载一层粒径为5～100纳米的微粒结构的氧化锌层，使原二氧化硅颗粒具有复合氧化锌、二氧化钛的性质；复合颗粒的比表面积约为45～350平方米/克，颗粒的粒径在70～680纳米；用于光子晶体组装材料，电流变材料，高档涂料及化妆品的添加剂。本发明的方法简单，能耗低，粒子的纯度高，分散性好，且产物的尺寸可通过反应条件加以控制。The invention belongs to the field of preparation of inorganic semiconductor nano-composite materials, and in particular relates to spherical zinc oxide and titanium dioxide composite particles with a particle structure on the surface of several nanometers to submicrons, and a preparation method and application thereof. The uniform monodisperse composite particles of zinc oxide and titanium dioxide with a particle structure on the surface are prepared by zinc salt hydrolysis, and a layer of titanium dioxide with a thickness of 5-80 nanometers is coated on the spherical silica particles as the core, and then a layer of particle size is loaded. The zinc oxide layer with a particle structure of 5 to 100 nanometers makes the original silicon dioxide particles have the properties of composite zinc oxide and titanium dioxide; the specific surface area of the composite particles is about 45 to 350 square meters per gram, and the particle size of the particles is between 70 and 680 nanometers; additives for photonic crystal assembly materials, electrorheological materials, high-grade coatings and cosmetics. The method of the invention is simple, low in energy consumption, high in particle purity and good in dispersibility, and the size of the product can be controlled through reaction conditions.
Description
Technical field
The invention belongs to inorganic semiconductor nano composite material preparation and Application Areas, particularly relate to several nanometers to the surface of submicron and have the spherical zinc oxide of microgranular texture and titanium dioxide composite particle and its production and use.
Background technology
Zinc oxide is commonly called as zinc white, titanium dioxide is commonly called as titanium white, the two all is the more high function fine inorganic material of research, it is important pottery, semi-conductor and catalytic material, and wherein nano zine oxide has more excellent optics, electricity, multiple effects such as chemistry and biology, nano titanium oxide then has more good weathering resistance, chemical resistance, higher chemical stability, thermostability, nontoxicity, special performances such as photosensitivity, so the two all is widely used in chemical industry, electronics, biological, coating, transmitter, dielectric materials, plastics, printing ink, papermaking, chemical fibre, fields such as rubber, for example:
(1) owing to zinc oxide, titanium dioxide have very strong receptivity and shielding effect to ultraviolet ray, and they are nontoxic, tasteless, non-stimulated to skin, do not decompose, never degenerate, Heat stability is good, so in recent years, in the novel sunscreen agent of in makeup, using and the development research of antiseptic-germicide, obtain the favor of many countries.
(2) zinc oxide is as infrared radiant material, and being expected has very important application prospects at aspects such as energy-conservation, solar energy converting and infrared stealth.Zinc oxide fine particles is doped in the coating, is expected the object surfaces emittance is reduced, make absorbing material.
(3) zinc oxide, titanium dioxide all are good photocatalysts, when they are in nano-scale, because their specific surface area increases, the key attitude on surface is different with particulate inside, surface atom coordination deficiencies etc. form rough atomic steps, have strengthened reaction contact area, cause the activity site on surface to increase, reactive behavior increases greatly.
(4) zinc oxide is to find the earliest, use one of maximum Metal Oxide Semiconductor Gas Sensing material, and its working temperature is higher, and good stability is convenient to quality control, is easy to polarize and turn to, and shows more satisfactory electrical characteristic and kinetic characteristic.
In addition, nano granular of zinc oxide can be as the raw material of high-speed abrasion-proof rubber product, germ resistance gypsum product, image recording material, piezoelectric and electro-conductive material etc., nano titanium oxide can be as the strengthening agent of the tinting material of the nucleus agent of special glass, resin printing ink, silicon rubber, solid lubricant, matting agent etc.Have unique and excellent performance and purposes, for example " CO oxidation over gold nanoparticles supported on TiO when existing than single component form nano zine oxide, when titanium dioxide is combined with each other
2And TiO
2-ZnO:catalytic activity effects due to surface modificationof TiO
2With ZnO " zinc oxide with the gold ion load reported in (Applied Catalysis A:General 253 (2003) 527～536) is modified on the titanium dioxide, and its catalytic activity to carbon monoxide obviously strengthens; " A Highly Efficient Solar Cell Made from a Dye-ModifiedZnO-Covered TiO2 Nanoporous Electrode " (chem.mater.2001,13, the titanium dioxide film of the zinc oxide load of being reported in 678-682) has the ability of more significant transmission electronics than simple titanium dioxide; " Improved performance of a dye-sensitized solar cell using aTiO
2/ ZnO/Eosin Y electrode " (Solar Energy Materials ﹠amp; The titanium dioxide film of the zinc oxide load of being reported Solar Cells 792003 495-505) can reduce electronics and hole bonded speed again, improves Solar cell performance etc., and this respect is still among research and development.
The nano particle diameter scope is little and be evenly distributed, preparation process is simple as much as possible, the preparation method of nano titanium oxide mainly is a liquid chemical method, because the most hydrolysis of its presoma is very fast, be difficult to controls reaction speed, be difficult for making the controlled monodispersed titanium dioxide granule of particle diameter, and easy the reunion be difficult to redispersion in the sintering process; Nano zine oxide mainly adopts direct method, and indirect method and liquid chemical method wherein exist too and be difficult for making the controlled monodispersed Zinc oxide particles of particle diameter.
Nano zine oxide, titanium dioxide all have many particular performances and purposes separately, in conjunction with they two excellent properties, the preparation have new excellent specific property matrix material, the inventor is always in the way of actively seeking to address these problems for many years.
Summary of the invention
Main purpose of the present invention provide a kind ofly single disperse, particle diameter is controlled and narrowly distributing, surface have the spherical zinc oxide and the titanium dioxide composite particle of microgranular texture, this composite particles has the character of zinc oxide and titanium dioxide compound, and its particle size range is in 70～680 nanometers.
A further object of the present invention provides a kind of surface and has the spherical zinc oxide of microgranular texture and the preparation method of titanium dioxide composite particle.
Another object of the present invention provides a kind of surface and has the spherical zinc oxide of microgranular texture and the purposes of titanium dioxide composite particle.
The objective of the invention is to realize by following technical scheme:
The zinc oxide and the evenly single composite particles that disperses of titanium dioxide that have microgranular texture with zinc salt hydrolysis method preparation surface, described composite particles is that to coat a layer thickness on as the monodispersed preparing spherical SiO 2 particle of kernel be the smooth titanium dioxide layer of 5～80 nanometers, and then load one deck particle diameter is the zinc oxide film of the microgranular texture of 5～100 nanometers thereon, make former silica dioxide granule have the character of combined oxidation zinc, titanium dioxide, wherein, the particle diameter of silica dioxide granule is 60～500 nanometers; The gained surface has the spherical zinc oxide of microgranular texture and the specific surface area of titanium dioxide composite particle is about 45～350 meters squared per gram, and particle grain size is in 70～680 nanometers.
Surface of the present invention has the spherical zinc oxide of microgranular texture and the preparation method of titanium dioxide composite particle may further comprise the steps:
1.. under the room temperature, the silica dioxide granule of cladding titanium dioxide is distributed in the mixed solution of alcohol-water, wherein, the volume ratio of ethanol and water is 1: 19～9: 1 in the mixed solution, and the concentration of silicon dioxide of cladding titanium dioxide is 1～100g/L;
2.. the aqueous solution of preparing metal zinc salt, its volumetric molar concentration are 0.001～5.0mol/L; According to the silica dioxide granule size of desired nuclear-cladding titanium dioxide, volumetric molar concentration and the consumption thereof that required load zinc oxide amount is determined the metal zinc salt;
3.. the aqueous solution of preparation alcohol amine compound, its volumetric molar concentration is 0.05～10mol/L, according to the amount of required load zinc oxide and volumetric molar concentration and the consumption thereof that volumetric molar concentration is determined hydramine thereof;
4.. get in the two simultaneously alcohol-water systems of annotating the silicon-dioxide that joins the cladding titanium dioxide that 1. step prepare of the aqueous solution of the alcohol amine compound that 3. metallic zinc salts solution that 2. step prepare and step prepare, wherein, metal zinc salt and hydramine consumption determine that according to the amount of the zinc oxide of the big or small and required load of the silica dioxide granule of cladding titanium dioxide the mol ratio that makes alcohol amine compound and metal zinc salt is 3: 1～60: 1 in the mixed solution; The concentration of silicon dioxide of cladding titanium dioxide is 0.3～80g/L in the whole system.
5.. step mixed solution 4. is warming up to 65～95 ℃, stirs ageing 2～10 hours;
6.. with step mixed solution centrifugation 5., the throw out washing with alcohol is washed afterwards centrifugation more at every turn and is gone out spherical zinc oxide and the titanium dioxide composite particle that the surface has microgranular texture; Gained composite particles specific surface area is about 45～350 meters squared per gram, and particle grain size is in 70～680 nanometers;
7.. 6. step is had the spherical zinc oxide and the further vacuum-drying use of titanium dioxide composite particle of microgranular texture in the gained surface, or handle the back at 400～1000 ℃ of roasting heats and use.
Described metal zinc salt is zinc nitrate, zinc chloride, zinc sulfate or zinc acetate etc.
Described alcohol amine compound (replacing conventional used potassium hydroxide, hydrogen-oxygen people sodium and ammonium hydroxide) is diethanolamine, trolamine or quadrol etc.
It is 99123760.9 disclosed method preparations that the spherical of described coated by titanium dioxide can adopt number of patent application.
The used metallic zinc salt solution of the present invention solution energy consumption is low, the product purity height, and good dispersity, and the particulate size can be controlled by reaction conditions.
What the present invention was significantly different with the past technology of preparing is, in the present invention, the preparation of zinc oxide, titanium dioxide composite particle is the zinc oxide of carried fine particles structure on the spherical of monodispersed cladding titanium dioxide, make monodispersed spherical zinc oxide, titanium dioxide composite particle than being easier to, make particle have the character of combined oxidation zinc, titanium dioxide.
Surface of the present invention has the zinc oxide of microgranular texture and the spherical composite particles of titanium dioxide is of many uses, it is a kind of novel high function fine inorganic material, it is important pottery, semi-conductor and catalytic material are widely used in fields such as chemical industry, electronics, biology, coating, transmitter, dielectric materials, plastics, printing ink, papermaking, chemical fibre, rubber.Zinc oxide and the spherical composite particles purity of titanium dioxide height with microgranular texture of the present invention, good dispersity, and the particulate size is controlled, is the spherical composite particles of microgranular texture zinc oxide, titanium dioxide.So can be used for the product of high platform, as: be used for the photonic crystal assembled material, er material, the additive of high-grade paint and makeup etc.
Zinc oxide and the spherical composite particles of titanium dioxide that surface of the present invention has microgranular texture have:
1. conversion unit, reaction conditions are required lowly, prepare simplely, be easy to apply.
With comparatively inexpensive silicon-dioxide as kernel, the method for preparing the spherical composite particles of zinc oxide, titanium dioxide of monodispersed microgranular texture is a very economical and superior.3. the silica dioxide granule of the cladding titanium dioxide by selecting different size and the charge capacity of controlled oxidation zinc are easy to obtain the product of different field purposes desired size.
Description of drawings
Fig. 1. embodiments of the invention 1 composite particles Electronic Speculum and stereoscan photograph.
Fig. 2. embodiments of the invention 1 composite particles Electronic Speculum and stereoscan photograph.
Embodiment
Embodiment 1
The volume ratio that titanium dioxide granule 0.5 gram that particle diameter is about about 36 nanometers of commercially available coated with silica bed thickness of 260 nanometers is distributed to 40 milliliters of ethanol and water is in 1: 1 the ethanol-water solution, be warming up to 90 ℃, in this mixing solutions, simultaneously add volumetric molar concentrations and be respectively each 20 milliliters of the trolamine of 1.6 mol and 0.5 mol and acetic acid zinc solutions with two notes, its interpolation time is 40 minutes, stirred 1 hour, room temperature ageing 10 hours, obtain white opacity liquid, centrifugation, the centrifugal product drying of gained obtains particle diameter has microgranular texture on the surface of 318 nanometers zinc oxide and the spherical composite particles of titanium dioxide; Promptly coat the titanium dioxide of about 36 nanometers of thickness, about 22 nanometers of zinc oxide fine particles particle diameter, the specific surface area of composite particles is 150～280 meters squared per gram.
Embodiment 2
The volume ratio that the silicon-dioxide (particle diameter is that the coated with silica thickness of 60 nanometers is the titanium dioxide of 25 nanometers) of 0.35 gram cladding titanium dioxide is dispersed in 35 milliliters of ethanol and water is in 1: 5 the alcohol-water mixing solutions, be warmed up to 90 ℃, two simultaneously the notes adds diethanolamine and the acetic acid zinc solution that 18 milliliters of volumetric molar concentrations are respectively 3.2 mol and 0.35 mol, its interpolation time is for making 45 minutes, stirred 1 hour, ageing 12 hours, obtain white opacity solution, centrifugation, the centrifugal product vacuum-drying of gained, obtain particle diameter has microgranular texture on the surface of 101 nanometers zinc oxide and the spherical composite particles of titanium dioxide, promptly coat the titanium dioxide and about 16 nanometers of zinc oxide fine particles particle diameter of about 25 nanometers of thickness, the specific surface area of composite particles is 200～350 meters squared per gram.
Embodiment 3
To restrain with titanium dioxide composite particle 0.2 by the resulting spherical zinc oxide with microgranular texture of embodiment 1 preparation, the volume ratio that is dispersed in 30 milliliters of ethanol and water is in 2: 4 the mixed solvent of alcohol-water.Two simultaneously again the notes adds trolamine and the acetic acid zinc solution that each 15 milliliters of volumetric molar concentration is respectively 5 mol and 0.8 mol, its interpolation time is for making 40 minutes, stirred 1 hour, ageing 8 hours, obtain white opacity solution, centrifugation, the centrifugal product vacuum-drying of gained, obtain particle diameter has microgranular texture on the surface of 330 nanometers zinc oxide and the spherical composite particles of titanium dioxide, promptly coat the titanium dioxide and about 34 nanometers of zinc oxide fine particles particle diameter of about 36 nanometers of thickness, the specific surface area of composite particles is 130～210 meters squared per gram.
Embodiment 4
The volume ratio that the silicon-dioxide (particle diameter is that the coated with silica thickness of 130 nanometers is the titanium dioxide of 52 nanometers) of 0.6 gram cladding titanium dioxide is dispersed in 45 milliliters of ethanol and water is in 2: 1 the alcohol-water mixing solutions, be warmed up to 80 ℃, two simultaneously the notes adds ethylene glycol amine and the acetic acid zinc solution that each 30 milliliters of volumetric molar concentration is respectively 4 mol and 1 mol, its interpolation time is 60 minutes, stir reaction down 150 minutes, ageing 10 hours, obtain white opacity solution, centrifugation, the centrifugal product vacuum-drying of gained, obtain particle diameter has microgranular texture on the surface of 208 nanometers zinc oxide and the spherical composite particles of titanium dioxide, promptly coat the titanium dioxide and about 26 nanometers of zinc oxide fine particles particle diameter of about 52 nanometers of thickness, the specific surface area of composite particles is 180～300 meters squared per gram.
Embodiment 5
The volume ratio that the silicon-dioxide (particle diameter is that the coated with silica thickness of 200 nanometers is the titanium dioxide of 57 nanometers) of 1 gram cladding titanium dioxide is dispersed in 50 milliliters of ethanol and water is to be warming up to 90 ℃ in 1: 5 the alcohol-water mixing solutions, in this mixing solutions, add each 40 milliliters of trolamine and acetic acid zinc solution that molar concentration rate is 4.5 mol and 1.3 mol with two notes simultaneously, its interpolation time is 60 minutes, stirred 1 hour, room temperature ageing 10 hours, obtain white opacity solution, centrifugation, the centrifugal product vacuum-drying of gained, obtain particle diameter has microgranular texture on the surface of 293 nanometers zinc oxide and the spherical composite particles of titanium dioxide, promptly coat the titanium dioxide and about 36 nanometers of zinc oxide fine particles particle diameter of about 57 nanometers of thickness, the specific surface area of composite particles is 160～280 meters squared per gram.
Embodiment 6
The volume ratio that the silicon-dioxide (particle diameter is that the coated with silica thickness of 500 nanometers is the titanium dioxide of 15 nanometers) of 3 gram cladding titanium dioxides are dispersed in 65 milliliters of ethanol and water is to be warming up to 90 ℃ in 5: 1 the alcohol-water mixing solutions, in this mixing solutions, add trolamine and the acetic acid zinc solution that each 25 milliliters of volumetric molar concentration is respectively 2 mol and 0.6 mol with two notes simultaneously, its interpolation time is 120 minutes, stirred 1 hour, room temperature ageing 10 hours, obtain white opacity solution, centrifugation, the centrifugal product vacuum-drying of gained, obtain particle diameter has microgranular texture on the surface of 526 nanometers zinc oxide and the spherical composite particles of titanium dioxide, promptly coat the titanium dioxide and about 11 nanometers of zinc oxide fine particles particle diameter of about 15 nanometers of thickness, the specific surface area of composite particles is 45～150 meters squared per gram.
Claims (5)
1. a surface has the spherical zinc oxide and the titanium dioxide composite particle of microgranular texture, it is characterized in that:
Described composite particles is that to coat a layer thickness on as the monodispersed preparing spherical SiO 2 particle of kernel be the smooth titanium dioxide layer of 5～80 nanometers, and load one deck particle diameter is the zinc oxide film of the microgranular texture of 5～100 nanometers thereon; Wherein, the particle diameter of silica dioxide granule is 60～500 nanometers; Gained has the spherical zinc oxide of microgranular texture and the specific surface area of titanium dioxide composite particle is 45～350 meters squared per gram, and particle grain size is in 70～680 nanometers.
2. the preparation method of a composite particles as claimed in claim 1, it is characterized in that: described method may further comprise the steps:
1.. under the room temperature, the silica dioxide granule of cladding titanium dioxide is distributed in the mixed solution of ethanol-water, wherein, the volume ratio of ethanol and water is 1: 19～9: 1 in the mixed solution, and the concentration of silicon dioxide of cladding titanium dioxide is 1～100g/L;
2.. the aqueous solution of preparing metal zinc salt, its volumetric molar concentration are 0.001～5.0mol/L;
3.. the aqueous solution of preparation alcohol amine compound, its volumetric molar concentration is 0.05～10mol/L;
4.. get in the two simultaneously alcohol-aqueous systems of annotating the silicon-dioxide that joins the cladding titanium dioxide that 1. step prepare of the aqueous solution of the alcohol amine compound that 3. metallic zinc salts solution that 2. step prepare and step prepare, stir ageing; Wherein, the mol ratio of alcohol amine compound and metal zinc salt is 3: 1～60: 1 in the mixed solution, and the concentration of silicon dioxide of cladding titanium dioxide is 0.3～80g/L in the whole system;
5.. step mixed solution 4. is warming up to 65～95 ℃;
6.. step mixed solution is 5. separated, and the throw out washing with alcohol is isolated spherical zinc oxide and titanium dioxide composite particle with microgranular texture;
7.. spherical zinc oxide with microgranular texture and titanium dioxide composite particle that 6. step obtains are further used vacuum-drying, or handle at 400～1000 ℃ of roasting heats.
3. method as claimed in claim 2 is characterized in that: described metal zinc salt is zinc nitrate, zinc chloride, zinc sulfate or zinc acetate.
4. method as claimed in claim 2 is characterized in that: described alcohol amine compound is diethanolamine or trolamine.
5. the purposes of a composite particles as claimed in claim 1, it is characterized in that: described composite particles is used for the photonic crystal assembled material, er material, the additive of high-grade paint and makeup.
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| US7635729B2 (en) * | 2005-09-29 | 2009-12-22 | Raymond Lee Nip | Zinc oxide coated particles, compositions containing the same, and methods for making the same |
| CN1321899C (en) * | 2005-12-07 | 2007-06-20 | 浙江大学 | Process of preparing nano zinc oxide on SiO2 surface |
| CN100509952C (en) * | 2006-05-26 | 2009-07-08 | 中国科学院理化技术研究所 | A kind of transparent epoxy nanocomposite material and its preparation method and application |
| CN101381593B (en) * | 2007-09-03 | 2012-05-30 | 财团法人工业技术研究院 | Superhydrophobic self-cleaning powder and its manufacturing method |
| CN101469139B (en) * | 2007-12-26 | 2011-11-16 | 中国科学院大连化学物理研究所 | Preparation of silicon oxide supported monodisperse nanoparticle nano complex |
| CN101429348B (en) * | 2008-12-12 | 2011-08-10 | 江苏河海纳米科技股份有限公司 | Process for producing nano-titanium dioxide-zinc oxide composite powder |
| CN102222707A (en) * | 2011-06-30 | 2011-10-19 | 席君杰 | Semiconductor coating material and manufacturing method thereof and solar battery |
| WO2014171322A1 (en) * | 2013-04-19 | 2014-10-23 | 住友大阪セメント株式会社 | Silicon-oxide-coated zinc oxide and method for manufacturing same, silicon-oxide-coated-zinc-oxide-containing composition, and cosmetic |
| KR102176830B1 (en) * | 2013-11-13 | 2020-11-10 | 스미토모 오사카 세멘토 가부시키가이샤 | Silicon-oxide-coated zinc oxide and method for manufacturing same, silicon-oxide-coated zinc-oxide-containing composition, and cosmetic |
| CN103965762B (en) * | 2014-05-28 | 2016-07-13 | 河北麦森钛白粉有限公司 | ZnO/TiO2the anti-static coatings of modified preparation and preparation method |
| CN105642285A (en) * | 2016-01-13 | 2016-06-08 | 山东联星能源集团有限公司 | Catalyst for preparing hydrogen by photolysis of water |
| CN108002432A (en) * | 2017-12-14 | 2018-05-08 | 苏州中科纳福材料科技有限公司 | The preparation method of spherical composite material |
| CN116590070A (en) * | 2023-05-06 | 2023-08-15 | 杭州电子科技大学 | Preparation method of ZnO-coated SiO2 composite nanoparticles and application of lubricating additives |
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