CN114031307B - Photothermal anti-fog glass plate and preparation method thereof - Google Patents
Photothermal anti-fog glass plate and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3628—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing a sulfide
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3639—Multilayers containing at least two functional metal layers
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/38—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal at least one coating being a coating of an organic material
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/74—UV-absorbing coatings
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/22—Glazing, e.g. vaccum glazing
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Abstract
The invention discloses a photothermal anti-fog glass plate and a preparation method thereof, which relate to the technical field of defogging coatings and have the technical scheme that: the method comprises the following steps: step one, pretreating a glass substrate, and activating the glass substrate by using plasma; coating gold nano-materials and nano titanium dioxide particles on the glass substrate; coating the molybdenum disulfide quantum dots on the outermost surface; step four, after the glass substrate is dried, a layer of silane coupling agent is coated; and fifthly, after finishing coating, drying. The anti-fog device has the advantages of realizing dynamic anti-fog effect, being applicable to more scenes, realizing passive anti-fog and realizing energy-saving and environment-friendly effects.
Description
Technical Field
The invention relates to the technical field of demisting coatings, in particular to a photo-thermal anti-fog glass plate and a preparation method thereof.
Background
The fogging of the surface of an article is a common phenomenon, and is the phenomenon of water enrichment caused by the temperature difference of a gas-solid two-phase interface. Glass is an important production tool and occupies an important place in daily life. The fog on the surface of the glass can greatly reduce the optical transmittance of the glass, and can seriously influence the visibility of the glass, thereby influencing other properties of the glass. The surface fogging of the solar cell not only can reduce the generated energy of the solar cell, but also can cause surface icing; mist on the surface of the glass door of the refrigerator can influence the identification degree of the commodity; fog on the lens surface can affect the imaging quality of the camera. Condensation of mist on the surface of glass seriously affects application of the mist in the fields of glass doors and windows, bathroom mirrors, electronic display screens, optical glass, automobile glass and the like. In order to solve the problem of fog on the surface of glass, methods such as mechanical scraping, electrothermal evaporation, surfactants, organic coatings, inorganic super-hydrophilic coatings and the like have been partially applied. Mechanical and electrothermal methods require additional energy to be provided, contrary to energy conservation and environmental protection; the durability of the surfactant and the organic coating agent is poor, and the aging is short; although the inorganic super-hydrophilic coating can achieve the purpose of anti-fog, the water absorption effect on the surface of the inorganic super-hydrophilic coating can lead to water flooding. Currently, there are certain drawbacks to the anti-fog technology, whether active (energy consuming) or passive (0 energy consuming). Therefore, a novel passive anti-fog technology is to be developed.
The vacuum glass is a novel special environment-friendly glass. Compared with hollow glass, it has excellent heat and sound insulating effect, and also has certain passive antifogging function, and is excellent glass. The vacuum glass has wide application in the fields of glass curtain walls, refrigerator glass doors, passive houses, greenhouses and the like. The anti-fog of the vacuum glass is isolated from the heat part, the temperature difference between the glass and the water vapor is reduced, so that the water vapor is not easy to nucleate and grow on the surface of the glass and is condensed into visible water drops, and the anti-fog glass is static. However, dynamic vacuum glass has no antifogging properties. For example, when a vacuum glass for a refrigerator is opened for several seconds, the inner side of the glass door is immediately fogged, thereby affecting the visual line. Therefore, the dynamic anti-fog function of the vacuum glass is realized, and the development trend of the functional vacuum glass is realized.
Reducing the temperature difference is an effective anti-fog means. Besides electric heating, photo-thermal is an effective heating mode, and compared with electric heating, the photo-thermal does not need to be additionally powered, and is an energy-saving and environment-friendly heat conversion mode. With the development of nano technology, more and more nano materials show excellent photo-thermal conversion efficiency, such as noble metal nano materials, graphene, molybdenum disulfide and the like. The photo-thermal coating is hopeful to become a novel glass anti-fog coating. Accordingly, a photothermal coating having a certain light transmittance was developed, and the anti-fog coating to be obtained is applied to numerous glass products including vacuum glass.
Disclosure of Invention
The invention aims to provide a photo-thermal anti-fog glass plate and a preparation method thereof, which solve the problems that the existing glass anti-fog coating can not well absorb natural light and has poor defogging performance.
A preparation method of a photo-thermal anti-fog glass plate comprises the following steps:
step one, pretreating a glass substrate, and activating the glass substrate by using plasma; the pretreatment may remove surface inorganic particles and organic contaminants.
Coating gold nano-materials and nano titanium dioxide particles on the glass substrate; the nanometer titanium dioxide is an excellent ultraviolet shielding material, so that the anti-fog vacuum glass has the function of isolating ultraviolet rays.
Thirdly, coating a layer of molybdenum disulfide quantum dots; the use of the molybdenum disulfide quantum dots complements the weakening of visible light absorption caused by red shift of absorption peaks of the nano gold rods, and strengthens the absorption of the coating on natural light.
Step four, coating a layer of silane coupling agent on the outermost surface of the glass substrate;
and fifthly, after finishing coating, drying.
Further, the glass plate is vacuum glass produced in an on-line coating mode.
Further, the second step specifically comprises: and (3) coating the nano titanium dioxide particles and the gold nano materials on the glass substrate alternately. The coating structure of the precious metal nano material and the nano titanium dioxide alternating structure is adopted, and the excellent photo-thermal conversion efficiency of the precious metal nano material is utilized, so that the anti-fog effect of natural light is realized.
Further, repeating the second step until the number of coating layers is 5-30. The nano gold material is wrapped by the nano titanium dioxide layer, so that the absorption and photo-thermal conversion of the nano gold material to natural light and infrared light are enhanced.
Further, the spraying amount of the molybdenum disulfide per square meter is 0.1L-0.2L.
Further, the silane coupling agent is one or more of 3-triethoxysilyl-1-alanyl, glycidol camoxypropyl trimethoxy silane, methacryloxypropyl trimethoxy silane and vinyl trichlorosilane, and the coating thickness of the silane coupling agent is 40-100nm.
Further, the average particle diameter of the nano titanium dioxide is not more than 10nm.
Further, the gold nanomaterial is one or more of a nano gold rod, a nano gold star and a gold nanoflower, and the thickness of the sprayed gold nanomaterial is not more than 10nm.
Further, the drying treatment temperature in the step five is 50-80 ℃ and the treatment time is 5-10min.
A photo-thermal anti-fog glass sheet prepared by the method of any one of the above.
The beneficial effect of this scheme: the coating structure of precious metal nano material and nano titanium dioxide alternating structure is adopted. The excellent photo-thermal conversion efficiency of the noble metal nano material is utilized to realize the anti-fog effect of natural light. The nano gold material is wrapped by the nano titanium dioxide layer, so that the absorption of natural light and the photo-thermal conversion of the nano gold material are enhanced. The absorption spectrum of an anisotropic nanogold material is closely related to the refractive index of the environment in which it is located. Taking a nano gold rod as an example, the long-axis absorption peak of the theory that the nano gold rod with the length-diameter ratio of 3 is placed in the air is about 700nm, and if the nano gold rod is dispersed in water, the long-axis absorption peak of the nano gold rod is red shifted to be close to 900nm. This is because the refractive index of air is approximately equal to 1 and the refractive index of water is approximately 1.33. When the nano gold rod is arranged between the coating layers of the nano titanium dioxide, the long-axis absorption peak of the nano gold rod is red shifted to near infrared or even middle infrared region at the moment because the refractive index of the titanium dioxide is more than 2.5, and the infrared light absorption of the nano gold rod is greatly enhanced by the nano gold rod; the infrared component in the natural light has a very large proportion, and the coating structure can well realize the absorption and photo-thermal conversion of the natural light. In addition, the use of the molybdenum disulfide quantum dots complements the weakening of visible light absorption caused by red shift of absorption peaks of the nano gold rods, and strengthens the absorption of the coating on natural light. Therefore, the anti-fog coating is applied to the vacuum glass, so that a dynamic anti-fog effect can be realized, the anti-fog coating is applicable to more scenes, and the anti-fog coating can also realize passive anti-fog effect, thereby realizing energy conservation and environmental protection.
Drawings
FIG. 1 is a laminated nanomaterial structure in example 1 of the present invention;
FIG. 2 is a TEM image of the nanomaterial prepared in example 1 of the present invention, wherein (a) is a gold nanorod, (b) is a nano titanium oxide, (c) is a molybdenum disulfide quantum dot, and (d) is a spray-coated 1 layer of TiO 2 And SEM images obtained after Au;
FIG. 3 is a graph showing the temperature rise of the photo-thermal anti-fog coatings of example 1 and comparative example 1 of the present invention under light.
Detailed Description
The invention is described in further detail below with reference to fig. 1-3.
Example 1
The preparation method of the photo-thermal anti-fog glass plate comprises the following steps:
step one, treating the surface of the vacuum glass for 1h by using 30% piranha washing liquid, then cleaning by using deionized water, and drying for later use.
And step two, spraying 5 layers of nano titanium dioxide dispersion liquid and nano gold rod dispersion liquid on the vacuum glass substrate in sequence in a mode of referring to figure 1, wherein the spraying amount per square meter is 0.1L.
And thirdly, coating a layer of molybdenum disulfide quantum dots, wherein the spraying amount per square meter is 0.1L.
And step four, after drying, spraying 0.1L of vinyl trichlorosilane to the outermost surface, and drying.
The specific preparation method of the nano titanium dioxide dispersion liquid comprises the following steps: 750mg of titanium dioxide P25 powder and 250mg of chitosan powder were put into a mortar and ground for 10min, then the ground mixed powder was added into 100L of acetic acid solution (0.1%) and stirred for 10min, and then treated with ultrasound for 30min. After uniform dispersion, the pH was adjusted to 6 with a NaOH solution having a concentration of 1 mol/L. And the mass concentration of the nano titanium dioxide dispersion liquid is regulated to be 0.1 percent.
The nano gold rod dispersion liquid is prepared according to the method published by Chinese patent No. CN110108697A, and is specifically as follows:
(1) Chloroauric acid (25 mM, 100. Mu.L), freshly prepared sodium borohydride (10 mM, 600. Mu.L) and cetyltrimethylammonium bromide CTAB (0.2M, 5 mL) were added to a 20mL beaker and held for 0.5h to produce a brown gold nano-single crystal seed solution.
(2) HAuCl 4 (1 mM,250 mL), CTAB (7 g), sodium oleate (1.2468 g), silver nitrate (4 mM,18 mL), hydrochloric acid (12.1M, 1.5 mL) were mixed, then ascorbic acid (64 mM,1.25 mL) was added to the mixture to obtain a mixed solution, and when the mixed solution became colorless, 400. Mu.L of the gold nano-single crystal seed solution obtained in (1) was added to the mixed solution while stirring, aged at room temperature, and kept for 12 hours to obtain a nano-gold rod seed.
(3) After washing the gold nanorods with deionized water for several times, the concentrations of the gold nanorods and cetyltrimethylammonium bromide in the obtained gold nanorod dispersion were made to be 10nM and 1mM, respectively, and the gold nanorod dispersion was adjusted to an absorbance of 0.1, wherein the average particle size of the nano titanium dioxide was not more than 10nM.
The molybdenum disulfide quantum dots are prepared according to the method of Chinese patent 110217824A to obtain molybdenum disulfide quantum dot powder, and the mass concentration of the dispersion liquid is regulated to 0.1%.
A TEM image of the nanomaterial prepared in example 1 is shown in FIG. 2, wherein (a) is a gold nanorod, (b) is nano titanium dioxide, (c) is molybdenum disulfide quantum dots, and (d) is a sprayed 1-layer TiO 2 And SEM images obtained after Au.
Example 2
Example 2 differs from example 1 in that: and in the second step, the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid are sprayed on 15 layers of glass substrates alternately, wherein the spraying amount of each layer is 0.1L per square meter.
Example 3
Example 3 differs from example 1 in that: and in the second step, the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid are sprayed on the glass substrate alternately for 30 layers, wherein the spraying amount of each layer is 0.1L per square meter.
Comparative example 1
Comparative example 1 differs from example 1 in that: the step of spraying molybdenum disulfide quantum dots was absent in comparative example 1.
Comparative example 2
Comparative example 2 differs from example 1 in that: spraying the nano titanium dioxide dispersion liquid onto the glass substrate for 5 times, and then spraying the nano gold rod dispersion liquid onto the glass substrate for 5 times, wherein the spraying amount of each layer is 0.1L per square meter.
Comparative example 3
Comparative example 3 differs from example 1 in that: and in the second step, the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid are sprayed on the glass substrate alternately in turn for 4 layers, wherein the spraying amount of each layer is 0.1L per square meter.
Comparative example 4
Comparative example 4 differs from example 1 in that: and in the second step, the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid are sprayed on 35 layers of glass substrates alternately, wherein the spraying amount of each layer is 0.1L per square meter.
The anti-fog glasses obtained in example 1 and comparative example 1 were tested for temperature rise by irradiation of sunlight using a UV-VIS spectrophotometer, and the resulting temperature rise curves are shown in FIG. 3.
The optical transmittance of the photo-thermal nano-coating structures obtained in examples 1 to 3 and comparative examples 1 to 4 is shown in Table 1.
TABLE 1
Conclusion: compared with the embodiment 1, the comparative example 1 is not sprayed with molybdenum disulfide quantum dots, and as can be seen from table 1, the visible light transmittance of the embodiment 1 is 9% lower than that of the comparative example 1, which illustrates that the application of the molybdenum disulfide quantum dots can strengthen the absorption of the coating to the visible light, and as can be seen from fig. 3, the temperature before and after the illumination of the glass surface is measured under the same illumination intensity and illumination time, the temperature difference of the embodiment 1 is obviously higher than that of the embodiment 2, which illustrates that the application of the molybdenum disulfide quantum dots can improve the photo-thermal conversion efficiency of the coating; compared with examples 1-3, the ultraviolet shielding rate of comparative example 2 is far lower than that of examples as measured without alternately spraying nano titanium dioxide dispersion liquid and nano gold rod dispersion liquid, and the coating using the alternate spraying process is more excellent in infrared absorption capacity; as can be seen from comparative examples 3 and 4, when the number of spray layers of the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid is less than 5, the ultraviolet shielding rate and the infrared shielding rate of the coating layer are significantly reduced; when the number of spraying layers of the nano titanium dioxide dispersion liquid and the nano gold rod dispersion liquid exceeds 30 layers, the visible light absorption efficiency of the coating is not obviously different, but when the coating is thicker, the perspective effect of the vacuum glass is obviously reduced, and the practical application is not facilitated.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (8)
1. A preparation method of a photo-thermal anti-fog glass plate is characterized by comprising the following steps: the method comprises the following steps:
step one, pretreating a glass substrate, and activating the glass substrate by using plasma;
coating gold nano-materials and nano titanium dioxide particles on the glass substrate;
thirdly, coating a layer of molybdenum disulfide quantum dots;
step four, coating a layer of silane coupling agent on the outermost surface of the glass substrate;
step five, after finishing coating, drying;
the pretreatment is to treat the surface of the vacuum glass with 30% piranha washing liquid for 1h;
the second step is specifically as follows: alternately coating nano titanium dioxide particles and gold nano materials on the glass substrate in sequence; repeating the second step until the number of coating layers is 5-30, wherein one layer refers to a nano titanium dioxide particle layer monolayer or a gold nano material monolayer.
2. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the glass plate is vacuum glass produced in an on-line coating mode.
3. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the spraying amount of the molybdenum disulfide per square meter is 0.1L-0.2L.
4. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the silane coupling agent is one or a mixture of more of 3-triethoxysilyl-1-propylamine, glycidol-mazoxypropyl trimethoxy silane, methacryloxypropyl trimethoxy silane and vinyl trichlorosilane, and the coating thickness of the silane coupling agent is 40-100nm.
5. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the average particle diameter of the nano titanium dioxide particles is not more than 10nm.
6. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the gold nanomaterial is one or a mixture of several of nano gold rods, nano gold stars and gold nanoflowers, and the thickness of the sprayed single-layer gold nanomaterial is not more than 10nm.
7. The method for preparing the photo-thermal anti-fog glass sheet according to claim 1, wherein the method comprises the following steps: the drying treatment temperature in the step five is 50-80 ℃ and the treatment time is 5-10min.
8. A photothermal anti-fog glass sheet prepared by the method of any one of claims 1-7.
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| CN107952071B (en) * | 2017-11-23 | 2019-12-10 | 东华大学 | Preparation method of molybdenum disulfide quantum dot-loaded periodic mesoporous organosilicon nano drug-loaded compound |
| CN108514636B (en) * | 2018-03-30 | 2021-04-20 | 张晗 | Nano titanium photo-thermal preparation based on titanium quantum dots and preparation method thereof |
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