Negative ion spray for indoor use and preparation method thereof

Abstract

The present invention discloses a negative ion spray for indoor use and a preparation method thereof. The preparation method of the negative ion spray for indoor use comprises the following steps: mixing 10-20 ml of butyl titanate with 40-60 ml of ethanol to obtain a first solution; mixing 3-7 ml of glacial acetic acid, 5-15 ml of water, and 40-60 ml of ethanol to obtain a first solution; adding 0.05-0.15 grams of zirconyl chloride octahydrate, 0.08-0.16 grams of ferric nitrate, and 0.6-1.8 ml of ammonia water to obtain a second solution; adding the first solution dropwise to the second solution; adding 0.3-0.7 grams of amino acids and 250-350 grams of water to obtain a second solution; stirring and mixing. The negative ion spray of the present invention has a significant formaldehyde removal ability and shows an efficient formaldehyde removal rate. In addition, it can also effectively increase the concentration of negative ions in the indoor air, creating a more refreshing and healthy atmosphere for the indoor environment.

Description

Technical Field

[0001] The invention relates to a negative ion spray for indoor use and a preparation method thereof. Background Art

[0002] Formaldehyde pollution and the scarcity of negative ions in indoor environments have a profound impact on the health and comfort of residents, and this issue has attracted much attention.

[0003] First, formaldehyde poses a serious threat to human health. Adhesives and coatings used in furniture, decoration materials, and other building components release harmful volatile organic compounds (VOCs) such as formaldehyde. Prolonged exposure to high concentrations of formaldehyde can cause a range of health problems, including eye irritation, headaches, sore throats, and even respiratory illnesses. More importantly, the International Agency for Research on Cancer (IARC) classifies formaldehyde as a Class 1 carcinogen, and long-term exposure may increase the risk of developing malignant diseases such as leukemia, nasopharyngeal cancer, and lung cancer. The elderly, children, and those with respiratory problems are particularly susceptible to the harmful effects of formaldehyde.

[0004] Secondly, a lack of negative ions in indoor environments also affects health and comfort. Negative ions have the ability to absorb particulate matter in the air, such as dust, pollen, and bacteria, causing them to settle, thereby purifying the air. Furthermore, negative ions can promote cellular metabolism, enhance immunity, improve mood, and reduce anxiety and stress. Studies have shown that sufficient negative ions can improve sleep quality, enhance concentration, and even reduce depression.

[0005] In summary, the presence of formaldehyde pollution and a lack of negative ions in indoor environments has profound impacts on occupant health and comfort, and requires serious attention and resolution. Scientific research and regulatory measures will help improve indoor air quality and enhance people's living environments. Summary of the Invention

[0006] In view of the above technical deficiencies, an innovative solution is urgently needed to overcome these technical difficulties. The technical problem to be solved by the present invention is to provide a negative ion spray for indoor use and a preparation method thereof.

[0007] The specific technical solutions of the present invention are:

[0008] The present invention discloses a method for preparing a negative ion spray for indoor use, comprising the following steps:

[0009] Step 1: mixing butyl titanate and ethanol to obtain a first solution;

[0010] Step 2: glacial acetic acid, water, and ethanol are mixed to obtain a second solution;

[0011] Step 3: adding the first solution dropwise to the second solution;

[0012] Step 4: Add water.

[0013] Preferably, a method for preparing a negative ion spray for indoor use comprises the following steps:

[0014] Step 1: mixing butyl titanate and ethanol to obtain a first solution;

[0015] Step 2: glacial acetic acid, water, and ethanol are mixed to obtain a second solution;

[0016] Step 3: adding the first solution dropwise to the second solution;

[0017] Step 4: Add amino acids and water.

[0018] Preferably, a method for preparing a negative ion spray for indoor use comprises the following steps:

[0019] Step 1: mixing butyl titanate and ethanol to obtain a first solution;

[0020] Step 2: mixing glacial acetic acid, water, ethanol, zirconyl chloride octahydrate and / or ferric nitrate to obtain a second solution;

[0021] Step 3: adding the first solution dropwise to the second solution;

[0022] Step 4: Add amino acids and water.

[0023] A method for preparing an indoor negative ion spray comprises the following steps:

[0024] Step 1: mixing butyl titanate and ethanol to obtain a first solution;

[0025] Step 2: glacial acetic acid, water, ethanol, zirconyl chloride octahydrate, ferric nitrate and aqueous ammonia are mixed to obtain a second solution;

[0026] Step 3: adding the first solution dropwise to the second solution;

[0027] Step 4: Add amino acids and water.

[0028] The amino acid is at least one of glycine, alanine, valine, leucine, isoleucine, methionine, proline, tryptophan, serine, tyrosine, cysteine, phenylalanine, threonine, aspartic acid, glutamic acid, lysine, arginine, histidine, selenocysteine ​​and pyrrolysine.

[0029] Preferably, a method for preparing a negative ion spray for indoor use comprises the following steps:

[0030] Step 1: At room temperature, mix 10-20 ml of butyl titanate and 40-60 ml of ethanol to obtain a first solution;

[0031] Step 2: At room temperature, mix 3-7 ml of glacial acetic acid, 5-15 ml of water, and 40-60 ml of ethanol, add 0.05-0.15 g of zirconyl chloride octahydrate, 0.08-0.16 g of ferric nitrate, and 0.6-1.8 ml of aqueous ammonia, and stir to obtain a second solution;

[0032] Step 3: Add the first solution dropwise to the second solution at room temperature;

[0033] Step 4: At room temperature, add 0.3-0.7 grams of amino acids and 250-350 grams of water and stir to mix well.

[0034] Preferably, the step 3 is to add the first solution dropwise to the second solution at room temperature at a dropping rate of 5-15 ml / min, and then stir at 100-300 rpm for 20-80 min.

[0035] Preferably, the ammonia gas in the ammonia water in step 2 accounts for 20-30 wt% of the total weight.

[0036] The present invention also provides a negative ion spray for indoor use, which is prepared by any of the above methods.

[0037] The negative ion spray of the present invention has a significant formaldehyde removal capability and exhibits a high formaldehyde removal rate. In addition, it can effectively increase the concentration of negative ions in indoor air, creating a fresher and healthier indoor environment. DETAILED DESCRIPTION

[0038] A method for preparing an indoor negative ion spray comprises the following steps:

[0039] Step 1: At room temperature, mix 10-20 ml of butyl titanate with 40-60 ml of ethanol to obtain a first solution. Use a magnetic stirrer or other tool to ensure that the two liquids are thoroughly mixed. The purpose of this step is to dissolve the butyl titanate in the ethanol.

[0040] Step 2: At room temperature, mix 3-7 ml of glacial acetic acid, 5-15 ml of water, and 40-60 ml of ethanol, add 0.05-0.15 g of zirconyl chloride octahydrate, 0.08-0.16 g of ferric nitrate, and 0.6-1.8 ml of ammonia water (20-30 wt%), and stir evenly to obtain a second solution. The purpose of this step is to introduce doping sources such as zirconyl chloride and ferric nitrate to provide a basis for the preparation and modification of nano-TiO2.

[0041] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 5-15 ml / min, and then stir at 100-300 rpm for 20-80 minutes; this ensures that the two solutions are fully mixed to form a uniform gel;

[0042] Step 4: Add 0.3-0.7g of amino acid and 250-350g of water at room temperature and stir to mix. The purpose of this step is to introduce the amino acid and dilute the solution, thus finally obtaining the product of the negative ion spray for indoor use.

[0043] During the preparation process, the inventors selected butyl titanate as the titanium source and used a sol-gel method to prepare nano-TiO2. During this process, the inventors introduced doping sources such as zirconyl chloride octahydrate, ferric nitrate, and ammonia to achieve doping with Zr, Fe, and N ions. These doping sources play a key role in the preparation of nano-TiO2. After doping, the Zr, Fe, and N ions replace a portion of the tetravalent titanium ions in the nano-TiO2 crystals, causing the crystal structure to change and forming defects. This change in crystal structure and the formation of defects effectively inhibit the electron-hole recombination process, thereby significantly improving photocatalytic performance and further enhancing the ability to decompose formaldehyde. Notably, the unique feature of the present invention is that it can achieve enhanced photocatalytic performance without the need for a high-temperature calcination step. Although high-temperature calcination can generally further optimize the crystal structure, through careful doping design and preparation process, photocatalytic performance is successfully enhanced without high-temperature calcination. This makes the preparation method of the present invention more convenient and avoids some of the adverse effects that may be caused by high-temperature calcination. The inventors also utilized the amino group in an amino acid (L-isoleucine) to react with formaldehyde. This reaction effectively decomposes formaldehyde into harmless substances such as hydroxymethyl derivatives and water. This step achieves formaldehyde removal in a safe environment.

[0044] The negative ion spray developed by this invention demonstrates remarkable formaldehyde removal performance, achieving a highly efficient formaldehyde removal rate. Furthermore, this innovative spray possesses another important feature: it effectively increases the negative ion content in indoor air. By increasing the concentration of negative ions, it creates a fresher and healthier indoor atmosphere, providing residents with an increasingly peaceful and pleasant living experience. This technology not only achieves remarkable results in formaldehyde removal but also plays a positive role in improving indoor air quality, making a beneficial contribution to creating a more pleasant living environment.

[0045] In a specific embodiment, L-isoleucine has a CAS number of 73-32-5. Example 1:

[0046] A method for preparing an indoor negative ion spray comprises the following steps:

[0047] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0048] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol to obtain a second solution;

[0049] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0050] Step 4: Add 280 grams of water at room temperature, stir and mix evenly to obtain the indoor negative ion spray of the present invention. Example 2:

[0051] A method for preparing an indoor negative ion spray comprises the following steps:

[0052] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0053] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol to obtain a second solution;

[0054] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0055] Step 4: At room temperature, add 0.5 g of L-isoleucine and 280 g of water, and stir and mix them evenly to obtain the indoor negative ion spray of the present invention. Example 3:

[0056] A method for preparing an indoor negative ion spray comprises the following steps:

[0057] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0058] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol, add 0.1 g of zirconyl chloride octahydrate and 0.12 g of ferric nitrate, and stir to obtain a second solution;

[0059] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0060] Step 4: At room temperature, add 0.5 g of L-isoleucine and 280 g of water, and stir and mix them evenly to obtain the indoor negative ion spray of the present invention. Example 4:

[0061] A method for preparing an indoor negative ion spray comprises the following steps:

[0062] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0063] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol, add 0.22 g of zirconyl chloride octahydrate and 1.2 ml of ammonia water (25 wt%), and stir to obtain a second solution;

[0064] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0065] Step 4: At room temperature, add 0.5 g of L-isoleucine and 280 g of water, and stir and mix them evenly to obtain the indoor negative ion spray of the present invention. Example 5:

[0066] A method for preparing an indoor negative ion spray comprises the following steps:

[0067] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0068] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol, add 0.22 g of ferric nitrate and 1.2 ml of ammonia water (25 wt%), and stir to obtain a second solution;

[0069] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0070] Step 4: At room temperature, add 0.5 g of L-isoleucine and 280 g of water, and stir and mix them evenly to obtain the indoor negative ion spray of the present invention. Example 6:

[0071] A method for preparing an indoor negative ion spray comprises the following steps:

[0072] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0073] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol, add 0.1 g of zirconyl chloride octahydrate, 0.12 g of ferric nitrate, and 1.2 ml of ammonia water (25 wt%), and stir to obtain a second solution;

[0074] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0075] Step 4: Add 280 grams of water at room temperature, stir and mix evenly to obtain the indoor negative ion spray of the present invention. Example 7:

[0076] A method for preparing an indoor negative ion spray comprises the following steps:

[0077] Step 1: At room temperature, mix 15 ml of butyl titanate and 50 ml of ethanol to obtain a first solution;

[0078] Step 2: At room temperature, mix 5 ml of glacial acetic acid, 10 ml of water, and 50 ml of ethanol, add 0.1 g of zirconyl chloride octahydrate, 0.12 g of ferric nitrate, and 1.2 ml of ammonia water (25 wt%), and stir to obtain a second solution;

[0079] Step 3: At room temperature, add the first solution dropwise to the second solution at a rate of 10 ml / min, and then stir at 200 rpm for 40 min;

[0080] Step 4: At room temperature, add 0.5 g of L-isoleucine and 280 g of water, and stir and mix them evenly to obtain the indoor negative ion spray of the present invention.

[0081] Test Example 1:

[0082] In the case of 2mg / m 3 3 grams of the negative ion spray of the present invention were evenly sprayed into a 1L dryer with a low formaldehyde concentration; after standing for 1 hour, the formaldehyde concentration in the dryer was measured and the formaldehyde removal rate was calculated.

[0083] Table 1 Test results of formaldehyde removal

[0084]

[0085] Test Example 2:

[0086] 10 grams of the negative ion spray developed by the present invention was evenly sprayed into a sealed box with a volume of 1 liter. After standing for 24 hours, the change in negative ion solubility in the sealed box was measured using an American AlphaLab AIC3000 negative ion detector. The specific calculation method is: the negative ion solubility in the sealed box 24 hours after spraying is compared with the negative ion solubility in the sealed box before spraying, and the increase in negative ion solubility is calculated. This experimental process is intended to explore the effect of the negative ion spray of the present invention on the increase in indoor negative ion concentration, so as to verify its efficacy in improving the indoor air environment.

[0087] Table 2 Negative ion solubility test results

[0088]

[0089] Test Example 3:

[0090] After spraying 2 grams of the negative ion spray from Example 7 on a 1-square-meter surface of wood furniture, the surface was left at room temperature for 48 hours. Visual observation revealed no cracks, fissures, or color changes on the surface. This indicates that the negative ion spray of the present invention caused no visible corrosion to the wood furniture.

[0091] Nano-TiO2 is prepared using butyl titanate as the titanium salt via a sol-gel method. Zr, Fe, and N sources are provided as ion-doped zirconyl chloride octahydrate, ferric nitrate, and ammonia. The prepared nano-TiO2 is modified by doping with Zr, Fe, and N ions. Once incorporated into the nano-TiO2 crystals, the Zr, Fe, and N ions replace the tetravalent titanium ions within the nano-TiO2, altering the crystal structure and creating defects. This effectively inhibits electron-hole recombination, improving photocatalytic performance, and enhancing formaldehyde decomposition. In a dark environment, the amino group in an amino acid (L-isoleucine) reacts with formaldehyde, decomposing it into harmless substances such as hydroxymethyl derivatives and water, achieving safe formaldehyde removal. Furthermore, the invention is innovative in that it effectively enhances photocatalytic performance without requiring a high-temperature calcination step. While high-temperature calcination typically optimizes the crystal structure, this method, through careful doping design and preparation techniques, has successfully enhanced photocatalytic performance without the need for high-temperature calcination. This not only makes the preparation method of the present invention simpler, but also avoids some adverse effects that may be caused by high-temperature calcination.

[0092] The negative ion spray of this invention possesses multiple functions, effectively decomposing pollutants such as formaldehyde, benzene, toluene, xylene, and VOCs, while also effectively eliminating odors. Furthermore, it possesses potent bactericidal and fungicidal capabilities, increasing indoor negative oxygen ion concentrations to 2,000-3,000 per cubic centimeter. This invention is inherently harmless and safe for the human body. The products of pollutant degradation are carbon dioxide, water, and other harmless substances, preventing secondary pollution.

[0093] The present invention has a wide range of applications and is applicable to various places and environments, such as the following areas: (1) Human settlement environment: applicable to living rooms, offices, conference rooms, hotels, Internet cafes, cinemas, hotels, dance halls, etc. It helps to improve the indoor air quality of these places and create a fresher indoor environment for people. (2) Medical system: applicable to hospitals, clinics, health centers, outpatient clinics, emergency centers, epidemic prevention stations and other places. The application of this spray can purify the indoor air of medical institutions and provide a more hygienic and healthy working and treatment environment. (3) Education system: applicable to various places in schools, such as classrooms, dormitories, auditoriums, canteens, libraries, etc. It helps to provide an environment more suitable for learning and living, and improve the comfort and health of students and faculty members.

[0094] In summary, the negative ion spray of the present invention has application potential in many fields, and can create a healthier and more comfortable living and working environment for people by improving indoor air quality and purifying the environment.

Claims

1. A method for preparing a negative ion spray for indoor use, characterized in that: The steps include: Step 1: At room temperature, mix 10-20 ml of butyl titanate and 40-60 ml of ethanol to obtain a first solution; Step 2: At room temperature, mix 3-7 ml of glacial acetic acid, 5-15 ml of water, and 40-60 ml of ethanol, add 0.05-0.15 g of zirconyl chloride octahydrate, 0.08-0.16 g of ferric nitrate, and 0.6-1.8 ml of aqueous ammonia, and stir to obtain a second solution; Step 3: Add the first solution dropwise to the second solution at room temperature; Step 4: At room temperature, add 0.3-0.7 grams of amino acids and 250-350 grams of water and stir to mix well.

2. The method for preparing a negative ion spray for indoor use according to claim 1, wherein: The amino acid in step 4 is at least one of glycine, alanine, valine, leucine, isoleucine, methionine, proline, tryptophan, serine, tyrosine, cysteine, phenylalanine, threonine, aspartic acid, glutamic acid, lysine, arginine, histidine, selenocysteine ​​and pyrrolysine.

3. The method for preparing a negative ion spray for indoor use according to claim 1, wherein: The step 3 comprises adding the first solution dropwise to the second solution at room temperature at a dropping rate of 5-15 ml / min, and then stirring at 100-300 rpm for 20-80 min.

4. The method for preparing a negative ion spray for indoor use according to claim 1, wherein: In the ammonia water in step 2, ammonia gas accounts for 20-30wt% of the total weight.

5. A negative ion spray for indoor use, characterized in that: The invention is prepared by the method according to any one of claims 1 to 4.

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