CN112194143A - Preparation method of structural color-generating material with photocatalytic effect and stable structure - Google Patents
Preparation method of structural color-generating material with photocatalytic effect and stable structure Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 71
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 109
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 68
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 64
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 64
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 64
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 64
- 239000004038 photonic crystal Substances 0.000 claims abstract description 56
- 238000002156 mixing Methods 0.000 claims abstract description 55
- 239000004005 microsphere Substances 0.000 claims abstract description 52
- 239000006185 dispersion Substances 0.000 claims abstract description 36
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 31
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 132
- 229920000058 polyacrylate Polymers 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 23
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 21
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000002243 precursor Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- 239000002244 precipitate Substances 0.000 claims description 9
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 9
- 238000010556 emulsion polymerization method Methods 0.000 claims description 8
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000000049 pigment Substances 0.000 abstract description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910003081 TiO2−x Inorganic materials 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002159 nanocrystal Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 2
- 239000012046 mixed solvent Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000003980 solgel method Methods 0.000 abstract description 2
- 238000007731 hot pressing Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 description 35
- 230000000052 comparative effect Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 239000003086 colorant Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000011258 core-shell material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007146 photocatalysis Methods 0.000 description 5
- 239000011941 photocatalyst Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000122205 Chamaeleonidae Species 0.000 description 1
- 244000241796 Christia obcordata Species 0.000 description 1
- 241000692870 Inachis io Species 0.000 description 1
- 241000238413 Octopus Species 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UUYKGYZJARXSGB-UHFFFAOYSA-N ethanol;ethoxy(trihydroxy)silane Chemical compound CCO.CCO[Si](O)(O)O UUYKGYZJARXSGB-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
-
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
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- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
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- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
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Abstract
A method for preparing a structural chromogenic material with a photocatalytic effect and stable structure adopts a sol-gel method to prepare monodisperse silicon dioxide microspheres, and ammonia water is used for modifying the surfaces of the silicon dioxide microspheres. Method for preparing SiO with uniform grain diameter by mixed solvent method2@TiO2Nano microsphere, heat treatment under negative pressure to obtain SiO2@TiO2‑xAn amorphous photonic crystal. Mixing the PA dispersion liquid with SiO2@TiO2‑xThe amorphous photonic crystal is compounded to prepare the amorphous photonic crystal structure chromogenic material with the photocatalytic cerasus with stable structure. The oxygen defect introduced by the hot pressing treatment can prepare the structural color without angle dependence, the PA composite amorphous photonic crystal structure can resist the damage of mechanical external force to the PA composite amorphous photonic crystal structure, the structural color can never fade, and the TiO composite amorphous photonic crystal structure2The shell formed by the nanocrystal has high electron sumThe separation rate of the cavity and the photocatalytic function are improved. The amorphous photonic crystal structure chromogenic material with stable structure and photocatalytic characteristic and without angle dependence can replace the traditional pigment in the production and use of the pigment and degrade pollutants such as formaldehyde, benzene and the like.
Description
Technical Field
The technology belongs to the field of structural color materials, and particularly relates to a preparation method of a structural color generation material with a photocatalytic effect and stable structure.
Background
In nature, the evolution of colors has produced extraordinary optical effects from the brightest iridescent luster on peacock feathers or butterfly wings, to the adaptive self-discolouration of chameleon or octopus. These optical effects are typically caused by complex internal structures of the material at the nanoscale and microscale, on which visible light is reflected, dispersively diffracted, or scattered. The microstructure of the color is scientifically researched, and the structure is found to be a photonic crystal structure and an amorphous photonic crystal structure. Photonic crystals have an ordered combination of periodic dielectric structures, also known as photonic bandgaps, and structural color arises as a result of bragg diffraction and scattering of photons in the visible wavelength band within the photonic bandgap. Generally, a photonic crystal artificially copied has a gorgeous iridescent effect, observation is carried out in different directions, colors are different, a soft structural color generated by an amorphous photonic crystal is more suitable for production and application, the amorphous photonic crystal has stronger incoherent scattering, so that the material presents a white appearance, currently, researchers adopt light absorption materials such as acetylene black and polypyrrole to prepare a structural coloring material without angle dependence, but the color generated by the amorphous photonic crystal material is influenced by the black absorption material, and the doping amount also needs to be accurately controlled (CN 107121714A). Meanwhile, the structural color-generating materials are connected by electrostatic acting force only among the structural units of the amorphous photonic crystals, and if the structural units are damaged by mechanical external force, the color is changed, so that the application range of the non-angle-dependent structural color material is limited (CN 105174302A and CN 105174301A).
The amorphous photonic crystal structure with long-range disorder and short-range disorder has the advantages of no angle-dependent structural color, bright color and wide application range, and the structure color-generating material is added with the photocatalytic characteristic, so that the problem of pollution of harmful substances to human bodies such as formaldehyde, benzene and the like generated in the decoration process is solved after the amorphous photonic crystal structure is applied to decorative materials such as pigments, coatings and the like. The angle-independent structural color material with the photocatalytic effect is not known, and the material with the photocatalytic effect and stable structure is not researched and reported by researchers.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a structural color-generating material with a stable structure and a photocatalytic effect, and the prepared structural color-generating material with a stable structure and excellent photocatalytic performance and without angle dependence makes up the blank of the application field of the structural color-generating material with a stable structure and without angle dependence and the combination of photocatalytic function.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for preparing a structurally stable structure chromogenic material with a photocatalytic effect comprises the following steps:
1）SiO2preparing microspheres;
dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.1-0.5 mol/L and the concentration of the tetraethoxysilane is 0.6-2.0 mol/L, stirring at the constant temperature of 25-40 ℃ for reaction for 2-8 h, centrifuging, washing and drying after the reaction is finished to obtain SiO2Microsphere powder;
2）SiO2modifying the microspheres;
mixing with 220nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 0.5mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2Emulsion of microspheres, SiO2The dosage ratio of the microsphere powder to the ammonia water is (0.1-0.5) g: 0.5 mL;
3）SiO2@TiO2preparing a material;
dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, and uniformly stirringDropwise adding the mixture into the emulsion prepared in the step 2), and adding isopropyl titanate and SiO2The proportion of the microsphere powder is 2 mmol: (0.1-0.5) g; after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2-5h at the temperature of 350-2@ TiO2Amorphous photonic crystal structure chromogenic material;
4) preparing a PA dispersion liquid;
adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction for 30min, adding 0.1g of potassium persulfate, and carrying out reaction and stirring at 70-85 ℃ for 4-7 h to obtain a Polyacrylate (PA) dispersion liquid;
5）PA/SiO2@TiO2preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1 for 5-8 h, and self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
Stirring and reacting at the constant temperature of 25-40 ℃ for 3-6h in the step 1).
The reaction temperature of the oil bath in the step 4) is 70-85 ℃.
Stirring for 5 hours in the step 4).
And in the step 5), ultrasonic reaction is carried out for 6 hours at room temperature.
And in the steps 1) and 3), the precipitate is washed with water for 2-4 times, and then washed with absolute ethyl alcohol for 2-4 times.
The drying temperature is 70 ℃.
The centrifugation in the step 3) is carried out for 10-20 min at 4000-8000 r/min.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention adopts a sol-gel method to prepare SiO2The microsphere powder is then prepared on SiO by a mixed solvent method2TiO supported on microsphere surface2After negative pressure heat treatment, SiO with photocatalytic performance without angle dependence is obtained2@TiO2Amorphous photonic crystal structure chromogenic material. PA and SiO prepared by emulsion polymerization method2@TiO2After mixing, the PA/SiO with stable structure is formed2@TiO2Amorphous photonic crystal structure chromogenic material. In the preparation process, SiO is controlled by selecting the concentration of tetraethoxysilane2SiO with different microsphere sizes and different grain diameters2The microspheres appear different colors after assembly. SiO with better monodispersity2The microspheres are SiO for preparing spheres2@TiO2Preparing the core-shell structure nano-microsphere. SiO 22@TiO2The nanometer microsphere is used as a structural unit of the amorphous photonic crystal, white powder is obtained after heat treatment in the air, but TiO is used for negative pressure treatment2The mesoporous shell has oxygen defects to form a black light absorbing material. The multiple scattered light in the amorphous photonic crystal structure can be absorbed, so that the amorphous photonic crystal structure color without angle dependence is prepared, the surface electrons of the photocatalyst are more than holes due to the occurrence of oxygen vacancies, the oxygen vacancy defect energy level is formed, and the TiO defect energy level is reduced2The forbidden band width effectively improves the photocatalysis efficiency. PA-modified SiO2@TiO2The amorphous photonic crystal structure is stable, and the color cannot be changed due to the damage of mechanical external force. The amorphous photonic crystal structure chromogenic material with stable structure and photocatalytic property can replace the traditional pigment in the use process of the pigment, the structure is stable, the color is never faded, meanwhile, pollutants like benzene, formaldehyde and the like can be degraded in the home decoration environment, and the amorphous photonic crystal structure chromogenic material has wide application prospect in the development road of the environment-friendly pigment industry. The method has the advantages of simple production process flow and no pollution in the production process, and the structure color generation material without angle dependence prepared by the method has bright color and excellent photocatalytic performance, and can meet the development requirement of the environment-friendly pigment industry.
SiO prepared by the invention with stable structure2@TiO2Amorphous photonic crystal structure color-producing material of core-shell structure, TiO2The nano-crystal is uniformly coated on the SiO2SiO with good surface and appearance2@TiO2As a structural unit of the amorphous photonic crystal, the PA fixes the structural unit in a network structure of a macromolecule, and experiments prove that the amorphous photonic crystal has stable structure and bright color, and the photocatalytic performance under the stimulation of visible light is superior to that of the current commercial photocatalyst P25.
Drawings
FIG. 1 is a comparison of example 1 and comparative example 1, the left image being SiO prepared in comparative example 12@TiO2White powder, right panel SiO prepared in example 12@ TiO green powder;
FIG. 2 is SiO prepared in example 12@TiO2-xGreen powder and SiO prepared in comparative example 12@TiO2White powder X-ray diffraction pattern;
FIG. 3 is SiO prepared in example 12，SiO2@TiO2And PA/SiO2@TiO2Enlarging SEM pictures of different times under a field emission scanning electron microscope;
FIG. 4 is a diagram showing the photocatalytic degradation of rhodamine B of the structurally stable amorphous photonic crystal structure chromogenic material with photocatalytic effect obtained in example 1.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited to the following examples.
Example 1
A method for preparing a structural color-generating material with a photocatalytic effect and stable structure comprises the following steps:
1）SiO2preparation of microspheres
Dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.2 mol/L and the concentration of the tetraethoxysilane is 0.7 mol/L, stirring at the constant temperature of 30 ℃ for reaction for 4h, centrifuging, washing and drying after the reaction is finished to obtain the tetraethoxysilaneTo SiO2Microsphere powder;
2）SiO2modification of microspheres
0.2g of 210 nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 1 mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2An emulsion of microspheres;
3）SiO2@TiO2preparation of the Material
Dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, dropwise adding the mixture into the emulsion prepared in the step 2), and after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2h at 350 ℃ to obtain SiO with the photocatalytic effect2@TiO2Amorphous photonic crystal structure chromogenic material.
4) Preparation of PA Dispersion
Adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction at 70 ℃ for 30min, adding 0.1g of potassium persulfate, and stirring for 6h to obtain the Polyacrylate (PA) dispersion liquid.
5）PA/SiO2@TiO2Preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1 for 5 hours, self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
Example 2
A method for preparing a structural color-generating material with a photocatalytic effect and stable structure comprises the following steps:
1）SiO2preparation of microspheres
Dissolving ethyl orthosilicate in ethanol solution, mixing for 20min, dissolving ammonia water in ethanol solution, and mixingDripping ethyl orthosilicate ethanol solution into ammonia water ethanol solution at the speed of 0.02mL/S for 10min to ensure that the ammonia water concentration is 0.3 mol/L and the ethyl orthosilicate concentration is 1.2mol/L, stirring at the constant temperature of 35 ℃ for reaction for 3h, centrifuging, washing and drying after the reaction is finished to obtain SiO2Microsphere powder;
2）SiO2modification of microspheres
0.1g of 220nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 0.5mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2An emulsion of microspheres;
3）SiO2@TiO2preparation of the Material
Dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, dropwise adding the mixture into the emulsion prepared in the step 2), and after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2h at 400 ℃ to obtain SiO with the photocatalytic effect2@TiO2Amorphous photonic crystal structure chromogenic material.
4) Preparation of PA Dispersion
Adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction at 78 ℃ for 30min, adding 0.1g of potassium persulfate, and stirring for 5h to obtain the Polyacrylate (PA) dispersion liquid.
5）PA/SiO2@TiO2Preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1 for 5 hours, self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
Example 3
A method for preparing a structural color-generating material with a photocatalytic effect and stable structure comprises the following steps:
1）SiO2preparation of microspheres
Dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.2 mol/L and the concentration of the tetraethoxysilane is 1.4 mol/L, stirring and reacting at the constant temperature of 40 ℃ for 5h, centrifuging, washing and drying after the reaction is finished to obtain SiO2Microsphere powder;
2）SiO2modification of microspheres
0.3g of 230nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 1.5mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2An emulsion of microspheres;
3）SiO2@TiO2preparation of the Material
Dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, dropwise adding the mixture into the emulsion prepared in the step 2), and after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2h at 400 ℃ to obtain SiO with the photocatalytic effect2@TiO2Amorphous photonic crystal structure chromogenic material.
4) Preparation of PA Dispersion
Adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction at 82 ℃ for 30min, adding 0.1g of potassium persulfate, and stirring for 6h to obtain the Polyacrylate (PA) dispersion liquid.
5）PA/SiO2@TiO2Preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1, ultrasonic mixing for 6h, self-assembling on a 75 ℃ glass substrate to obtain the product with stable structurePA/SiO with photocatalysis effect2@TiO2Amorphous photonic crystal structure chromogenic material.
Example 4
A method for preparing a structural color-generating material with a photocatalytic effect and stable structure comprises the following steps:
1）SiO2preparation of microspheres
Dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.5 mol/L and the concentration of the tetraethoxysilane is 2.0 mol/L, stirring and reacting at the constant temperature of 40 ℃ for 6h, centrifuging, washing and drying after the reaction is finished to obtain SiO2Microsphere powder;
2）SiO2modification of microspheres
0.2g of 220nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 1 mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2An emulsion of microspheres;
3）SiO2@TiO2preparation of the Material
Dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, dropwise adding the mixture into the emulsion prepared in the step 2), and after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2 to 5 hours at the temperature of 380 ℃ to obtain SiO with the photocatalytic effect2@TiO2Amorphous photonic crystal structure chromogenic material.
4) Preparation of PA Dispersion
Adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction at 72 ℃ for 30min, adding 0.1g of potassium persulfate, and stirring for 5h to obtain the Polyacrylate (PA) dispersion liquid.
5）PA/SiO2@TiO2Preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1, ultrasonic mixing for 8h, self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
Comparative example 1
The method comprises the following steps:
dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.5 mol/L and the concentration of the tetraethoxysilane is 2.0 mol/L, stirring and reacting at the constant temperature of 40 ℃ for 6h, centrifuging, washing and drying after the reaction is finished to obtain SiO2Microsphere powder;
2）SiO2modification of microspheres
0.2g of 220nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 1 mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2An emulsion of microspheres;
3）SiO2@TiO2preparation of the Material
Dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, dropwise adding the mixture into the emulsion prepared in the step 2), and after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2 to 5 hours at the temperature of 380 ℃ to obtain SiO with the photocatalytic effect2@TiO2Amorphous photonic crystal structure chromogenic material.
4) Preparation of PA Dispersion
Adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction at 72 ℃ for 30min, adding 0.1g of potassium persulfate, and stirring for 5h to obtain the Polyacrylate (PA) dispersion liquid.
5）PA/SiO2@TiO2Preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1, ultrasonic mixing for 8h, self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
The samples from example 1 and comparative example 1 are shown in fig. 1, the left panel is the material from comparative example 1 and is white in color, and the right panel is the sample from example 1 and is green and bright in color. The oxygen defect can be generated under the negative pressure heat treatment, so that the obtained product is in an amorphous photonic crystal structure with bright color, and a green film and a white film are obtained by PA spraying.
The X-ray diffraction patterns of example 1 and comparative example 1 are shown in fig. 2, and the diffraction angles 2 θ =25.28 °, 48.05 °, 53.89 °, 62.69 °, 68.76 °, 75.03 ° correspond to TiO, respectively2Crystal planes (101), (200), (105), (204) and (116) of (A), due to SiO2Amorphous at 550 ℃, which demonstrates that the samples obtained in comparative example 1 and example 1 are pure anatase phase TiO2The nanoparticles are coated on SiO2Surface, TiO of example 12The crystal form was kept in agreement with comparative example 1, illustrating the oxygen defects and Ti generated by sintering under negative pressure3+Does not affect SiO2@TiO2The crystal structure of (1).
FIG. 3 is an SEM photograph of the amorphous photonic crystal structure colorant having a photocatalytic effect obtained in example 1, and it can be seen from FIGS. 3a and 3b that the originally smooth surface of silica is roughened and TiO is coarsened2The nano crystal grains are coated on the surface of the silicon dioxide, and the coated microspheres still keep better sphericity, have good monodispersity and are relatively uniform in particle size distribution. FIGS. 3c and 3d show SiO2@TiO2-xThe surface is completely covered by PA, and the amorphous photonic crystal structure is protected.
FIG. 4 is the photo-catalytic degradation diagram of the amorphous photonic crystal structure colorant with photo-catalytic effect on rhodamine B obtained in example 1，SiO2@TiO2-xThe degradation rate of the amorphous photon structure color-generating material to RhB reaches 90 percent after 180min under visible light, and is 3 times of the photocatalysis effect of the commercial photocatalyst P25. Therefore, the thin layer covering of the visible PA does not influence the photocatalytic reaction, and the amorphous photon structure color-generating material with stable structure realizes the functional combination of photocatalysis and structural color which is never faded.
In summary, the invention discloses a method for preparing amorphous photonic crystal structure color material with photocatalysis effect, which comprises nano SiO2@TiO2Preparing core-shell microspheres; calcining the nano-microspheres under negative pressure; the composite material is compounded with PA to finally obtain the green structural color material with stable structure and without angle dependence and photocatalytic effect. Treating SiO under vacuum2@TiO2Core-shell microspheres can produce Ti3+The presence of oxygen vacancies makes the electron concentration at the photocatalyst surface greater than the holes, resulting in TiO2To be an n-type semiconductor. Semiconductorized TiO2After being excited by light, the photocatalyst is easy to generate electron-hole pairs, and the photocatalytic efficiency is improved. The PA film protects the amorphous photonic crystal structure to ensure that SiO is generated2@TiO2The structural units are fixed, the effect of permanent fastness is realized, the controllable preparation of the core-shell structure can increase the tone variety of the structural pigment, and the structural pigments with different colors and photocatalytic characteristics change SiO2Particle size or modification of TiO2The convenient realization of the thickness of the shell layer can lead the pigment industry to develop a wide space in the direction of environmental protection.
Claims (8)
1. A method for preparing a structural color-generating material with a photocatalytic effect and stable structure is characterized by comprising the following steps:
1）SiO2preparing microspheres;
dissolving tetraethoxysilane in an ethanol solution, mixing for 20min, dissolving ammonia water in the ethanol solution, mixing for 10min, dripping the ethanol solution of tetraethoxysilane into the ethanol solution of ammonia water at the speed of 0.02mL/S to ensure that the concentration of the ammonia water is 0.1-0.5 mol/L and the concentration of the tetraethoxysilane is 0.6-2.0 mol/L, and stirring at the constant temperature of 25-40 ℃ for reaction for 10minCentrifuging, washing and drying the mixture after the reaction is finished for 2-8 h to obtain SiO2Microsphere powder;
2）SiO2modifying the microspheres;
mixing with 220nmSiO2Ultrasonically dispersing microsphere powder in 100mL of ethanol, adding 0.5mL of ammonia water for mixing, and uniformly stirring to obtain the SiO modified by the ammonia water2Emulsion of microspheres, SiO2The dosage ratio of the microsphere powder to the ammonia water is (0.1-0.5) g: 0.5 mL;
3）SiO2@TiO2preparing a material;
dissolving 2 mmol of isopropyl titanate in a mixed solution of 65mL of ethanol and 35mL of acetonitrile, stirring uniformly, and dropwise adding the mixture into the emulsion prepared in the step 2), wherein the isopropyl titanate and SiO are2The proportion of the microsphere powder is 2 mmol: (0.1-0.5) g; after full reaction, washing and centrifuging the precipitate, and drying at 70 ℃ to obtain a precursor; under the negative pressure environment, the precursor is thermally treated for 2-5h at the temperature of 350-2@ TiO2Amorphous photonic crystal structure chromogenic material;
4) preparing a PA dispersion liquid;
adopting an emulsion polymerization method, uniformly mixing 5.0g of methyl methacrylate and 5.0g of butyl acrylate, pouring the mixture into a three-neck flask filled with 90 mL of deionized water, carrying out oil bath reaction for 30min, adding 0.1g of potassium persulfate, and carrying out reaction and stirring at 70-85 ℃ for 4-7 h to obtain a Polyacrylate (PA) dispersion liquid;
5）PA/SiO2@TiO2preparation of amorphous photonic crystal structure chromogenic material
Mixing the components in a mass ratio of 0.1: 10 SiO2@TiO2Preparation of SiO by mixing with ethanol2@TiO2Dispersion, mixing PA dispersion with SiO2@TiO2The dispersion was prepared as 14: 1 for 5-8 h, and self-assembling on a glass substrate at 75 ℃ to obtain the PA/SiO with the photocatalytic effect and stable structure2@TiO2Amorphous photonic crystal structure chromogenic material.
2. The method for preparing the structure-stable chromogenic material with photocatalytic effect according to claim 1, wherein the reaction is carried out at a constant temperature of 25-40 ℃ for 3-6h in the step 1).
3. The method of claim 1, wherein the oil bath reaction temperature in step 4) is 70-85 ℃.
4. The method for preparing a structurally stable chromogenic structural color with photocatalytic effect according to claim 1, wherein said stirring in step 4) is carried out for 5 hours.
5. The method for preparing a structurally stable chromogenic structural color with photocatalytic effect according to claim 1, wherein said step 5) is carried out by ultrasonic reaction at room temperature for 6 hours.
6. The method for preparing a structurally stable chromogenic material with a photocatalytic effect according to claim 1, wherein the precipitate is washed with water for 2 to 4 times and then with absolute ethanol for 2 to 4 times in the steps 1) and 3).
7. The method of claim 1, wherein the drying temperature is 70 ℃.
8. The method for preparing a structurally stable chromogenic structural material having a photocatalytic effect according to claim 1, wherein the centrifugation in step 3) is carried out at 4000 to 8000 r/min for 10 to 20 min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753947A (en) * | 2021-09-06 | 2021-12-07 | 山东大学 | Self-doping TiO2-xNanoparticle/redox dye photochromic system and application thereof |
| CN114890478A (en) * | 2022-05-13 | 2022-08-12 | 武汉科技大学 | Superlattice material, preparation method thereof and application of superlattice material in modification of lithium-sulfur battery diaphragm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903715A (en) * | 2017-11-27 | 2018-04-13 | 陕西科技大学 | A kind of preparation method of the high saturation schemochrome pigment compound based on polypyrrole and silica |
| US20190127234A1 (en) * | 2016-04-01 | 2019-05-02 | President And Fellows Of Harvard College | Formation of high quality titania, alumina and other metal oxide templated materials through coassembly |
| CN110152641A (en) * | 2019-06-11 | 2019-08-23 | 陕西科技大学 | A kind of amorphous photonic crystal schemochrome material and preparation method thereof with photocatalytic effect |
| CN110304654A (en) * | 2019-07-30 | 2019-10-08 | 陕西科技大学 | A kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica and preparation method thereof |
-
2020
- 2020-08-25 CN CN202010863014.1A patent/CN112194143A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190127234A1 (en) * | 2016-04-01 | 2019-05-02 | President And Fellows Of Harvard College | Formation of high quality titania, alumina and other metal oxide templated materials through coassembly |
| CN107903715A (en) * | 2017-11-27 | 2018-04-13 | 陕西科技大学 | A kind of preparation method of the high saturation schemochrome pigment compound based on polypyrrole and silica |
| CN110152641A (en) * | 2019-06-11 | 2019-08-23 | 陕西科技大学 | A kind of amorphous photonic crystal schemochrome material and preparation method thereof with photocatalytic effect |
| CN110304654A (en) * | 2019-07-30 | 2019-10-08 | 陕西科技大学 | A kind of amorphous photonic crystal schemochrome material compound based on black titanium dioxide and silica and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| WEI MA等: "Flexible, self-standing and patternable P(MMA-BA)/TiO2 photonic crystals with tunable and bright structural colors", DYES AND PIGMENTS * |
| 曾琦;李青松;袁伟;周宁;张克勤;: "非晶无序光子晶体结构色机理及其应用", 材料导报 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753947A (en) * | 2021-09-06 | 2021-12-07 | 山东大学 | Self-doping TiO2-xNanoparticle/redox dye photochromic system and application thereof |
| CN114890478A (en) * | 2022-05-13 | 2022-08-12 | 武汉科技大学 | Superlattice material, preparation method thereof and application of superlattice material in modification of lithium-sulfur battery diaphragm |
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