Air conditioner panel and preparation method thereof

Abstract

The invention discloses an air conditioner panel and a preparation method thereof, and the preparation method comprises the following steps: preparing a perovskite precursor solution and a silver ion solution; smearing the perovskite precursor solution on a substrate to obtain a perovskite thin film; doping the obtained perovskite thin film with a silver ion solution to obtain a silver ion doped perovskite thin film; and assembling the silver ion doped perovskite thin film and the air conditioner panel to obtain the antibacterial self-cleaning air conditioner panel. Through the photocatalytic effect of perovskite, automatic decomposition of organic pollutants on the surface of the air conditioner panel is achieved, so that the cleaning purpose is achieved, the antibacterial performance is optimized by doping silver ions, the remarkable antibacterial effect of the air conditioner panel is achieved, the high self-cleaning function is achieved, the manual cleaning cost is saved, and the cleaning effect is good. And energy is saved.

Description

Technical Field

[0001] This application relates to the field of home appliance manufacturing technology, specifically to an air conditioner panel and its preparation method. Background Technology

[0002] In modern life, indoor air conditioning has become an indispensable home appliance. As a component that users frequently come into contact with and is exposed to the indoor environment for extended periods, the cleanliness and hygiene of the air conditioner panel are crucial. Traditional air conditioner panels are mostly made of materials such as plastic or metal, which themselves lack antibacterial and self-cleaning capabilities, leading to numerous problems in daily use.

[0003] From a hygiene perspective, bacteria, mold, and other microorganisms in the indoor environment can easily adhere to and multiply on the surface of air conditioner panels. When people touch the panel to operate it, they may become contaminated with these harmful microorganisms, which can affect their health, especially for people with weakened immune systems, such as the elderly, children, and patients, who are at greater potential risk. According to relevant hygiene testing reports, after a period of use, air conditioner panels without antibacterial treatment can harbor thousands of bacteria per square centimeter, including common pathogens such as Escherichia coli and Staphylococcus aureus.

[0004] In terms of cleaning and maintenance, traditional panels are prone to accumulating dust, oil, and other stains. Lacking self-cleaning capabilities, they require regular manual wiping by the user. However, frequent wiping not only wastes the user's time and energy but can also scratch the panel due to improper cleaning tools or agents, affecting its appearance and lifespan. Furthermore, hard-to-reach corners and crevices are cleaning dead zones, where dirt accumulates over time, further breeding bacteria and reducing the overall cleanliness of the air conditioner.

[0005] In summary, existing antibacterial agents for air conditioner panels have limited effectiveness. The relatively enclosed environment in which air conditioners are used makes them prone to the growth of bacteria, mold, and other microorganisms, which is insufficient to meet people's needs for a healthy life. Furthermore, traditional air conditioner panels do not have self-cleaning functions and are easily exposed to the air, absorbing dust, oil, and other pollutants. They require regular manual cleaning, which is time-consuming, labor-intensive, and ineffective. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an air conditioner panel that is both antibacterial and self-cleaning, as well as a method for its preparation.

[0007] The present invention adopts the following technical solution.

[0008] The first aspect of this invention discloses a method for manufacturing an air conditioner panel, comprising the following steps:

[0009] Includes the following steps:

[0010] Preparation of perovskite precursor solution and silver ion solution;

[0011] The perovskite precursor solution is coated onto a substrate to obtain a perovskite thin film.

[0012] The perovskite film is doped with the silver ion solution to obtain a silver ion-doped perovskite film.

[0013] The silver ion-doped perovskite film is assembled with an air conditioner panel to obtain a perovskite-based air conditioner panel.

[0014] Preferably, the preparation of the perovskite precursor solution includes: selecting a halide perovskite system CH3NH3PbI3, heating and stirring the raw materials in a mixed solvent according to a set ratio to obtain the perovskite precursor solution.

[0015] Preferably, the raw materials and their ratio are CH3NH3PbI3:CH3NH3I:PbI2:CH3NH3Cl = 1:(3.2-4.5):(3.2-4.5):1, and the mixed solvent and its ratio are DMF:DMSO = (90-97):(3-10).

[0016] Preferably, the heating temperature is 60℃~80℃, and the stirring time is 4~6 hours, until a uniform and clear perovskite precursor solution is formed.

[0017] Preferably, the concentration of the silver ion solution is 0.005-0.012 mol / L.

[0018] Preferably, the step of coating the perovskite precursor solution onto the substrate specifically includes: fixing the substrate on a spin coater, spin coating the perovskite precursor solution at a speed of 2000-3000 rpm for 30-40 seconds to make the solution spread evenly on the substrate surface, and then transferring the substrate to a hot plate at 80℃-100℃ for annealing for 15-20 minutes to form a dense perovskite film.

[0019] Preferably, a titanium dioxide co-catalyst is spin-coated onto the obtained perovskite film to promote the separation and transport of photogenerated carriers and improve the decomposition efficiency of organic pollutants.

[0020] Preferably, the perovskite film is doped with a silver ion solution, specifically by immersing the perovskite film in a silver ion solution, allowing silver ions to diffuse into the perovskite lattice through ion exchange, and after immersion, removing the film, rinsing and drying it to obtain a silver ion-doped perovskite film.

[0021] A second aspect of the present invention discloses an air conditioner panel, which is obtained based on the air conditioner panel preparation method described in the first aspect.

[0022] A third aspect of the present invention discloses an air conditioner, including the air conditioner panel described in the second aspect.

[0023] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0024] 1. This invention utilizes the photocatalytic effect of perovskite to achieve the automatic decomposition of organic pollutants on the surface of air conditioner panels, thereby achieving the purpose of cleaning;

[0025] 2. This invention optimizes the antibacterial properties by rationally doping elements, specifically by controlling the concentration of doped silver ions, enabling perovskite to exhibit strong antibacterial properties and providing a new approach to solving the hygiene problems of air conditioner panels.

[0026] In summary, this invention achieves a significant antibacterial effect on the air conditioner panel, possesses a strong self-cleaning function, saves on the cost of manual cleaning, is environmentally friendly and energy-saving, and maintains its cleaning performance due to the chemical and thermal stability of the perovskite material, ensuring the long-term use of the air conditioner panel. Attached Figure Description

[0027] Figure 1 This is the main schematic diagram of this application;

[0028] Figure 2 This is a schematic diagram of perovskite mixed with silver ions in this application;

[0029] Figure 3 This is a schematic diagram of the cleaning effect of this application. The horizontal axis represents different control groups, and the vertical axis represents the shortest time (days) for the adhesion of obviously visible dust and impurities.

[0030] In the figure: 1. Air conditioner panel; 2. Perovskite film doped with silver ions; 3. Surface of air conditioner panel; 4. Perovskite film; 5. Silver ion solution. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0032] Embodiment 1 of the present invention provides a method for preparing an antibacterial self-cleaning air conditioner panel, comprising the following steps:

[0033] Step 1: Preparation of perovskite precursor solution and silver ion doping solution

[0034] In a preferred but non-limiting embodiment of the present invention, step 1 specifically includes:

[0035] Step 1.1, Preparation of perovskite precursor solution: Select the halide perovskite system ABX3 and mix it according to the set ratio to obtain perovskite precursor solution.

[0036] In a preferred but non-limiting embodiment of the present invention, the halide perovskite system ABX3 is methylamine lead iodine (CH3NH3PbI3). Lead iodide (PbI2) and methylamine iodine (CH3NH3I) are dissolved in a mixed solvent of anhydrous N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) in stoichiometric ratio, and stirred for 4 to 6 hours under heating conditions of 60°C to 80°C until a uniform and clear perovskite precursor solution is formed.

[0037] Preferably, the raw materials and their ratio are CH3NH3PbI3:CH3NH3I:PbI2:CH3NH3Cl = 1:(3.2-4.5):(3.2-4.5):1, and the mixed solvent and its ratio are DMF:DMSO = (90-97):(3-10).

[0038] More preferably, the stoichiometric ratio of the raw materials is 1:4:4:1 for perovskite single crystals (n=1):CH3NH3I:PbI2:CH3NH3Cl, and they are mixed and dissolved in a mixed solvent of DMF:DMSO=93:7 at a concentration of 0.7M, wherein CH3NH3Cl is an additive. After shaking and dissolving, a perovskite precursor solution with n=5 is obtained.

[0039] Perovskites have good photocatalytic activity and can generate electron-hole pairs under light conditions. These active substances can effectively decompose organic pollutants and have the potential to achieve self-cleaning function.

[0040] Step 1.2, Preparation of silver ion doping solution: Weigh a certain amount of silver nitrate (AgNO3), dissolve it in deionized water, and prepare a silver ion solution with a concentration of 0.005-0.012 mol / L.

[0041] More preferably, the silver ion solution has a concentration of 0.01 mol / L.

[0042] Step 2: Apply the perovskite precursor solution obtained in Step 1 onto the substrate of the air conditioner panel to obtain a perovskite thin film.

[0043] In a preferred but non-limiting embodiment of the present invention, step 2 specifically includes:

[0044] Preparation of perovskite thin films by spin coating: The cleaned air conditioner panel glass substrate is fixed on a spin coater, and the perovskite precursor solution is spin-coated at 3000 rpm for 30-40 seconds to ensure uniform spread of the solution on the substrate surface. Subsequently, the substrate is quickly transferred to a hot plate at 80℃-100℃ for annealing for 15-20 minutes to promote the full crystallization of perovskite crystals and form a dense perovskite thin film.

[0045] In a preferred but non-limiting embodiment, to enhance the photocatalytic activity of perovskite under illumination, a 5-nanometer-thick layer of titanium dioxide (TiO2) cocatalyst is spin-coated onto the surface of the perovskite film. TiO2 can effectively promote the separation and transport of photogenerated carriers, thereby improving the decomposition efficiency of organic pollutants.

[0046] The spin-coating process for the titanium dioxide is as follows: spin-coating TiO2 sol at a speed of 2000 rpm for 30-40 seconds, and then annealing in a muffle furnace at 500℃-600℃ for 30-40 minutes to form a TiO2-modified perovskite composite film.

[0047] Step 3: The perovskite film obtained in Step 2 is doped with silver ion solution to obtain a silver ion-doped perovskite film.

[0048] In a preferred but non-limiting embodiment of the present invention, step 3 specifically includes:

[0049] Silver ion doping: Silver ion doping is performed using an immersion method. The annealed perovskite film 4 is immersed in the silver nitrate solution obtained in step 1.2, i.e., the silver ion solution 5. Figure 2 As shown, the soaking time is controlled at 30-40 minutes, allowing silver ions to gradually diffuse into the perovskite lattice through ion exchange. After soaking, the film is removed and rinsed three times with deionized water to remove residual silver nitrate on the surface, and then dried in an oven at 60℃-80℃ for more than 10 minutes to obtain a silver ion-doped perovskite film.

[0050] In a preferred but non-limiting embodiment, silver ion doping can also be achieved by first incorporating silver ions into a perovskite precursor solution, and then spin-coating or coating a perovskite thin film onto an air conditioning substrate.

[0051] Silver ions (Ag) +Perovskite materials possess broad-spectrum antibacterial properties, killing bacteria by disrupting their cell walls and interfering with cellular metabolism. During photocatalysis, the introduction of silver ions not only enhances the antibacterial effect but also promotes the generation of reactive oxygen species, further improving sterilization efficiency. The reactive oxygen species generated in the photocatalytic reaction not only kill bacteria but also decompose organic pollutants, degrading complex organic matter into harmless small molecules such as carbon dioxide and water. The superhydrophilicity of perovskite materials allows for the uniform distribution of water on their surface, facilitating the adsorption and decomposition of pollutants, thus achieving a self-cleaning function. Therefore, the photocatalytic antibacterial and cleaning technology using silver ions doped in perovskite materials not only achieves efficient sterilization but also enables self-cleaning of the material surface.

[0052] Specifically, during photoexcitation, perovskite materials can effectively absorb photons under illumination, exciting electrons to transition from the valence band to the conduction band, forming photogenerated electron-hole pairs; while doped with silver ions (Ag) + Perovskite materials, due to their optimized band structure, improve the separation efficiency of photogenerated electrons and holes, reduce recombination, and enhance photocatalytic activity. During electron migration, photogenerated electrons are excited to the conduction band and then migrate to the material surface, where they react with water molecules or oxygen to generate reactive oxygen species, such as superoxide anions (O3). 2- ) and hydroxyl radicals (·OH); simultaneously, photogenerated holes remain in the valence band and interact with hydroxyl radicals (·OH) on the surface. - These compounds combine to generate more hydroxyl radicals. The resulting reactive oxygen species have strong oxidizing properties, capable of damaging bacterial cell membranes, causing leakage of cell contents, and thus killing the bacteria; at the same time, reactive oxygen species can also decompose organic pollutants, such as dyes and harmful chemicals, achieving self-cleaning.

[0053] Step 4, Assembly and Application

[0054] The silver-doped perovskite thin film 2 with antibacterial and self-cleaning functions prepared in step 3 is applied to the air conditioner panel 1 as follows: Figure 1 The attached assembly shown ensures that the silver-doped perovskite film 2 is firmly attached to the surface 3 of the air conditioner panel, resulting in an air conditioner panel that is antibacterial and self-cleaning.

[0055] In actual use, when the air conditioner panel is exposed to indoor light, the silver ions in the perovskite film continuously exert an antibacterial effect, inhibiting bacterial growth; at the same time, the photocatalytic effect is activated, decomposing organic pollutants such as dust and oil on the surface, achieving automatic cleaning and providing users with a clean and healthy usage environment.

[0056] The difference between this invention and previous processes lies in the improvement of the antibacterial and self-cleaning functions of the material due to silver ion doping. This invention can use X-ray diffraction (XRD) to analyze the crystal structure of the perovskite film and the lattice changes after silver ion doping, use scanning electron microscopy (SEM) to observe the surface morphology and microstructure of the film, and use a photocatalytic degradation experiment with methylene blue as a model pollutant to test the self-cleaning ability of the film under simulated sunlight irradiation. The plate count method is used to inoculate Escherichia coli and Staphylococcus aureus on the film surface, and after a certain period of cultivation, the number of bacteria is counted to evaluate the antibacterial performance of the film, thus characterizing the performance of the perovskite film.

[0057] Furthermore, the cleaning effect of the perovskite film can be compared by observing the air conditioner panel over time. The inventors set up a control group experiment, using an air conditioner with the air conditioner panel made in Example 1 as an example and an air conditioner with an ordinary air conditioner panel as a control example, and conducted three sets of control experiments.

[0058] The results are as follows Figure 3 As shown, after a period of observation, in control groups 1-3, it can be seen that the time for visible dust and impurities to adhere to the surfaces in Examples 1-3 is longer than that in Comparative Examples 1-3. Furthermore, the shortest time for visible dust and impurities to adhere to the surfaces of ordinary air conditioner panels is about 7 days, while the time for the added components is extended by at least three times.

[0059] Embodiment 2 of the present invention provides an antibacterial self-cleaning air conditioner panel, which is obtained based on the preparation method of the perovskite-based antibacterial self-cleaning air conditioner panel described in Embodiment 1.

[0060] Embodiment 3 of the present invention provides an air conditioner, including the antibacterial self-cleaning air conditioner panel described in Embodiment 2.

[0061] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0062] 1. This invention utilizes the photocatalytic effect of perovskite to achieve the automatic decomposition of organic pollutants on the surface of air conditioner panels, thereby achieving the purpose of cleaning;

[0063] 2. This invention optimizes the antibacterial properties by rationally doping elements, specifically by controlling the concentration of doped silver ions, enabling perovskite to exhibit strong antibacterial properties and providing a new approach to solving the hygiene problems of air conditioner panels.

[0064] In summary, this invention achieves a significant antibacterial effect on the air conditioner panel, possesses a strong self-cleaning function, saves on the cost of manual cleaning, is environmentally friendly and energy-saving, and maintains its cleaning performance due to the chemical and thermal stability of the perovskite material, ensuring the long-term use of the air conditioner panel.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A method for manufacturing an air conditioner panel, Its features are, Includes the following steps: Preparation of perovskite precursor solution and silver ion solution; The perovskite precursor solution is coated onto a substrate to obtain a perovskite thin film. The perovskite film is doped with the silver ion solution to obtain a silver ion-doped perovskite film. The silver ion-doped perovskite film is assembled with an air conditioner panel to obtain a perovskite-based air conditioner panel.

2. The method for manufacturing an air conditioner panel according to claim 1, characterized in that, The preparation of the perovskite precursor solution includes: selecting the halide perovskite system CH3NH3PbI3, heating and stirring the raw materials in a mixed solvent according to a set ratio to obtain the perovskite precursor solution.

3. The method for manufacturing an air conditioner panel according to claim 2, characterized in that, The raw materials and their ratio are CH3NH3PbI3:CH3NH3I:PbI2:CH3NH3Cl = 1:(3.2-4.5):(3.2-4.5):1, and the mixed solvent and its ratio are DMF:DMSO = (90-97):(3-10).

4. The method for preparing an air conditioner panel according to claim 2, characterized in that, The heating temperature is 60℃~80℃, and the stirring time is 4~6 hours, until a perovskite precursor solution is formed.

5. The method for manufacturing an air conditioner panel according to claim 1, characterized in that, The concentration of the silver ion solution is 0.005-0.012 mol / L.

6. The method for manufacturing an air conditioner panel according to claim 1, characterized in that, The process of applying the perovskite precursor solution onto the substrate specifically includes: fixing the substrate on a spin coater and spin-coating the perovskite precursor solution at a speed of 2000-3000 rpm for 30-40 seconds to ensure the solution is evenly spread on the substrate surface; then transferring the substrate to a hot plate at 80°C-100°C for annealing for 15-20 minutes to form a perovskite thin film.

7. The method for manufacturing an air conditioner panel according to claim 6, characterized in that, Titanium dioxide co-catalyst is spin-coated onto the perovskite film.

8. The method for manufacturing an air conditioner panel according to claim 1, characterized in that, The doping of the perovskite film with the silver ion solution specifically includes: immersing the perovskite film in the silver ion solution, allowing silver ions to diffuse into the perovskite lattice through ion exchange; after immersion, removing the film, rinsing and drying it to obtain a silver ion-doped perovskite film.

9. An air conditioner panel, obtained by the method of preparing an air conditioner panel according to any one of claims 1-8.

10. An air conditioner comprising the air conditioner panel of claim 9.

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