Solid material for air purification and preparation method of the same and application of the same

Abstract

To provide solid materials for air purification and disinfection, a preparation method of the same, and an application of the same.SOLUTION: The solid material comprises 50 to 60 wt.% of an inorganic porous material, 10 to 20 wt.% of nano titanium dioxide, 3 to 5 wt.% of a fluorescent material, 20 to 30 wt.% of sodium chlorite, 3 to 5 wt.% of sodium lignosulfonate, 1 to 10 wt.% of polyethylene glycol, and 1 to 10 wt.% of polyvinyl alcohol. A method for preparing the solid material comprises: preparing a slurry of the fluorescent material using an aqueous solution of polyethylene glycol; uniformly mixing the nano titanium dioxide, sodium lignosulfonate, and the fluorescent material prepared as a slurry, then spraying the mixture onto an inorganic porous carrier to allow uniform adsorption; and mixing sodium chlorite with the mixture, followed by granulation to obtain a product. The solid material for air purification according to the present invention can be stored stably over a long period, and by means of chlorine dioxide gas that is gradually released, can decompose harmful substances in the air such as formaldehyde and kill bacteria present in the air.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to the technical field of air purification, and in particular to a solid material for air purification and its preparation method and application of the solid material. [Background technology]

[0002] Chlorine dioxide is a non-toxic, harmless, effective, highly oxidizing disinfectant with anti-corrosion, deodorizing, and freshness-preserving properties. Additionally, chlorine dioxide is non-pathogenic, non-teratogenic, and non-carcinogenic. It was approved by the U.S. Food and Drug Administration (FDA), the U.S. Environmental Protection Agency (EPA), and the U.S. Department of Agriculture (USDA) in the 1980s and is a top-rated A1 disinfectant among safe disinfection methods. Under the same conditions, chlorine dioxide's disinfection performance is 2.63 times that of chlorine, and it boasts a wide disinfection range, good efficacy, a short duration of action, and a low dosage.

[0003] Due to the physical properties of chlorine dioxide, aqueous chlorine dioxide solutions are often used for disinfection. However, chlorine dioxide solutions have drawbacks, such as high concentration, short release period, and inconvenience in transportation and storage. Furthermore, the need to prepare the chlorine dioxide solution on-site prevents the full utilization of the advantages of gaseous chlorine dioxide, such as the wide diffusion range and strong effect. Therefore, to solve the above technical problems, solid-loaded chlorine dioxide products are often used. Common solid carriers include silica gel, calcium silicate, diatomaceous earth, talc, molecular sieves, activated carbon, superabsorbent polyacrylic resin, agar, superabsorbent resin, carboxymethyl cellulose, etc. Summary of the Invention [Problem to be solved by the invention]

[0004] However, these solid supports have drawbacks such as low adsorption capacity, short usable life after loading with chlorine dioxide, difficult storage and / or poor effectiveness. [Means for solving the problem]

[0005] The present invention provides a solid material for air purification and a method for preparing the same, which can solve one or more of the above technical problems. In one aspect, an embodiment of the present invention provides a solid material comprising 50-60 wt% inorganic porous material, 10-20 wt% nanotitanium dioxide, 3-5 wt% fluorescent material, 20-30 wt% sodium chlorite, 3-5 wt% sodium lignosulfonate, 1-10 wt% polyethylene glycol, and 1-10 wt% polyvinyl alcohol, where the weight percentages are the weight percentages of each component relative to the total weight of the solid material.

[0006] Optionally, the inorganic porous material is activated alumina or activated zeolite. Optionally, the activated alumina has a viscosity of 200 to 350 mPa s as measured according to the BET test method. 2 / g, a pore volume of 0.3 to 0.45 ml / g, and an average pore diameter of 2 to 50 nm.

[0007] Optionally, the activated zeolite has a viscosity of 500 to 800 m as measured according to the BET test method. 2 / g, a pore volume of 0.3 to 0.85 ml / g, and an average pore diameter of 2 to 60 nm.

[0008] Optionally, the fluorescent material is an alkaline earth aluminate fluorescent material that emits fluorescence at a wavelength of 400 to 580 nm. Optionally, the polyethylene glycol has a weight average molecular weight of less than 2000.

[0009] Optionally, the nano titanium dioxide is titanium dioxide having an average particle size of 1 to 150 nm. Optionally, the sodium lignosulfonate has a molecular weight of 400-700.

[0010] In another aspect, the present invention provides a method for preparing any of the above solid materials, comprising: Weighing inorganic porous material, nano titanium dioxide, fluorescent material, sodium chlorite, sodium lignosulfonate, polyethylene glycol, and polyvinyl alcohol; preparing a uniformly dispersed paste from a fluorescent material and a polyethylene glycol aqueous solution to prepare a first slurry; uniformly mixing the nano-titanium dioxide, sodium lignosulfonate, and the first slurry to prepare a second slurry; Spraying the second slurry onto the inorganic porous material and stirring the inorganic porous material while spraying to form a semi-finished product in which the second slurry is uniformly adsorbed on the inorganic porous material; and Mixing sodium chlorite and semi-finished products, putting the mixture into a granulator, spraying polyvinyl alcohol aqueous solution into the granulator for granulation, and then drying to prepare a solid material.

[0011] Optionally, the polyethylene glycol is polyethylene glycol 1200, and the concentration of the aqueous polyethylene glycol solution is 0.05 to 0.1% by weight. Optionally, the concentration of the aqueous polyvinyl alcohol solution is 1 to 8% by weight.

[0012] Optionally, the drying step comprises heating the granulated particles to 500-600°C at a rate of 1-3°C / min, followed by holding at temperature for 1.5-5 hours. Optionally, the fluorescent material is formulated into a slurry using an aqueous polyethylene glycol solution and dispersed uniformly using ultrasound.

[0013] Optionally, the inorganic porous material is activated alumina, and the activated alumina is prepared using the following method: Adding a rapid dehydration powder (ρ-alumina powder) to hydrated aluminum hydroxide and performing rapid dehydration to prepare a first alumina material; adding macroporous pseudo-boehmite to a first alumina material and uniformly mixing the mixture to prepare a second alumina material; completing the second alumina material using microwaves; and Calcination is carried out at a temperature of 450 to 800°C to prepare activated alumina material.

[0014] In yet another aspect, the present invention provides an application of any of the above solid materials to air purification. Optionally, the solid material is used in a fresh air system or air cleaner.

[0015] In yet another aspect, the present invention provides the disinfection application of any of the above solid materials. The technical solutions according to the embodiments of the present invention can achieve the following beneficial technical effects:

[0016] The solid material for air purification or disinfection of the present invention can excite light of a specific wavelength of 400 to 580 nm via a fluorescent material under visible light irradiation. This specific wavelength of light can excite the photocatalytic activity of nano-titanium dioxide, helping the sodium chlorite encapsulated in the solid material to slowly release an appropriate amount of chlorine dioxide gas. Furthermore, by using an appropriate packaging material and stabilizer, the sodium chlorite can be encapsulated within the pores or on the surface of the solid material, resulting in the sodium chlorite remaining stable for a long period of time.

[0017] In addition, the preparation method of the solid material for air purification of the present invention is simple, the raw materials are easily available, the loss or decomposition of sodium chlorite during preparation is avoided, and the drawbacks of chlorine dioxide-loaded materials such as short use period and difficult storage and / or low effectiveness are overcome.

[0018] In addition, the chlorine dioxide gas slowly released from the solid material for air purification of the present invention can decompose harmful substances in the air, such as formaldehyde, and disinfect the air. For example, the solid material can be used in ventilation systems or fresh air systems and air purifiers to purify the air. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solutions of the present invention will be described clearly and completely below with reference to the embodiments and specific embodiments of the present invention. Apparently, the described embodiments or embodiments are only a part, not all, of the embodiments or embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the protection scope of the present invention.

[0020] According to an embodiment of the present invention, there is provided a solid material for air purification and air disinfection, comprising 50-60 wt % of an inorganic porous material, 10-20 wt % of nanotitanium dioxide, 3-5 wt % of a fluorescent material, 20-30 wt % of sodium chlorite, 3-5 wt % of sodium lignosulfonate, 1-10 wt % of polyethylene glycol, and 1-10 wt % of polyvinyl alcohol, wherein the weight percentages are the ratios of the weight of each component to the total weight of the solid material.

[0021] In an optional embodiment of the present invention, the inorganic porous material is activated alumina. Optionally, the activated alumina has a viscosity of 200 to 350 m as measured according to the BET test method. 2 The porous alumina material has a specific surface area of ​​0.3-0.45 ml / g, a pore volume of 0.3-0.45 ml / g, a loss on ignition of 7 wt. % or less, and 0.45 wt. % or less Na2O. The loss on ignition in this specification is the percentage of weight lost after heating the porous alumina material to 500-600°C and maintaining the temperature for 2 hours. The weight ratio of sodium oxide is less than 0.45 wt. Illustratively, the weight ratio of sodium oxide is 0.001 wt. %.

[0022] Optionally, the alumina has an average particle size of 0.1 to 10 mm, illustratively an average particle size of 0.5 to 8 mm, more illustratively an average particle size of 0.8 to 6 mm, or even more illustratively an average particle size of 1.5 to 5 mm.

[0023] In an optional embodiment of the present invention, the inorganic porous material is an activated zeolite. Optionally, the activated zeolite has a viscosity of 500 to 800 m as measured according to the BET test method. 2 / g, a pore volume of 0.3 to 0.85 ml / g, and an average pore diameter of 2 to 60 nm. Optionally, the activated zeolite has a specific surface area of ​​1.8 to 2.2 g / cm 3 and a porosity of 50% or greater. Optionally, the activated zeolite has an average particle size of 0.1 to 10 mm, illustratively an average particle size of 0.5 to 8 mm, more illustratively an average particle size of 0.8 to 6 mm, or even more illustratively an average particle size of 1.5 to 5 mm.

[0024] In an optional embodiment of the present invention, nano titanium dioxide is titanium dioxide having an average particle size of 1 to 100 nm, more illustratively 5 to 60 nm, or even more illustratively 5 to 30 nm.

[0025] In any embodiment of the present invention, the fluorescent material may be an alkaline earth aluminate fluorescent material that emits fluorescence at a wavelength of 400 to 580 nm. Optionally, the alkaline earth aluminate fluorescent material is doped with at least one rare earth ion, such as lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, europium, holmium, erbium, thulium, ytterbium, or lutetium, and is particularly doped with boron in an alkaline earth aluminate matrix. The alkaline earth aluminate luminescent material can be irradiated with natural visible light or a daylight lamp to efficiently convert absorbed light energy into fluorescent light with a wavelength of 400 to 580 nm, thereby emitting light. The emitted fluorescence lasts for 8 to 10 hours, and the brightness of the emitted fluorescence is 10 mcd / m. 2 Larger, with a brightness of 0.32mcd / m 2 The duration of the fluorescent light when reduced to 0.05% can be more than 70 hours. Furthermore, the alkaline earth aluminate fluorescent material is non-toxic, non-radioactive, and does not generate harmful substances during production. For example, the alkaline earth aluminate fluorescent material can be the fluorescent material disclosed in Patent CN1053789A1. Optionally, the average particle size of the fluorescent material is 1 to 50 nm, more illustratively 1 to 20 nm, so that the fluorescent material can be uniformly distributed on the inorganic material.

[0026] Optionally, the weight average molecular weight of the polyethylene glycol is less than 2000. Illustratively, the weight average molecular weight of the polyethylene glycol is less than 1500, more illustratively less than 1000, or even more illustratively less than 700.

[0027] According to another embodiment of the present invention, there is provided a method for preparing any of the above solid materials, comprising the steps of: Weighing inorganic porous material, nano titanium dioxide, fluorescent material, sodium chlorite, sodium lignosulfonate, polyethylene glycol, and polyvinyl alcohol; preparing a first slurry by dispensing a uniformly dispersed paste from a fluorescent material and a polyethylene glycol aqueous solution; preparing a second slurry by uniformly mixing nano-titanium dioxide, sodium lignosulfonate, and the first slurry; spraying the second slurry onto the inorganic porous body, and stirring the inorganic porous body while spraying to form a semi-finished product in which the second slurry is uniformly adsorbed on the inorganic porous body; and The method includes mixing sodium chlorite and the semi-finished product, putting the mixture into a granulator, spraying an aqueous polyvinyl alcohol solution onto the mixture for granulation, and then drying the mixture to prepare a solid material.

[0028] According to the preparation method of the present invention, after the various solid particle materials are uniformly mixed in the first step, sodium chlorite is mixed with the second slurry to saturate and adsorb into the active inorganic porous material, and then an organic layer such as a polyvinyl alcohol layer is encapsulated on the particle surface, so the solid material of the present invention can be easily and stably stored for a long period of time.In addition, the fluorescence emitted by the fluorescent material can be applied to nano-titanium dioxide and / or sodium chlorite, so that the solid material gradually releases chlorine dioxide gas.

[0029] Optionally, the concentration of the aqueous polyethylene glycol solution is 0.05 to 0.1% by weight, or illustratively 0.08 to 0.1% by weight. Optionally, the concentration of the aqueous polyvinyl alcohol solution is 1-8 wt %, more illustratively 3-5 wt %, or even more illustratively 5 wt %.

[0030] Optionally, the drying step includes heating the granulated particles to 500-600°C at a rate of 1-3°C / min, and then maintaining the temperature for 1.5-5 hours, illustratively 1.5-2.5 hours, or more illustratively 2 hours.

[0031] Optionally, the fluorescent material is formulated into a slurry using an aqueous polyethylene glycol solution and uniformly dispersed using ultrasound. Optionally, the ultrasonic dispersion lasts for 0.1 to 1.0 hours, or more illustratively, for 0.2 to 0.5 hours.

[0032] Optionally, the inorganic porous material is activated alumina, which is prepared by the following method: adding a rapidly dehydrated powder (ρ-alumina powder) to hydrated aluminum hydroxide and rapidly dehydrating it to prepare a first alumina material; adding macroporous pseudoboehmite to the first alumina material and uniformly mixing the mixture to prepare a second alumina material; completing the second alumina material using microwaves; and calcining at a temperature of 450 to 800°C to prepare the activated alumina material. The hydrated aluminum hydroxide herein may be a common hydrated aluminum hydroxide material. The rapidly dehydrated powder (mainly ρ-alumina powder) may be a common commercially available alumina particle material. The macroporous pseudoboehmite may be a commercially available pseudoboehmite, particularly a macroporous pseudoboehmite material with a large pore volume and a large specific surface area.

[0033] The activated alumina porous material prepared using the above method has a surface area of ​​200-350 m 2 / g and a pore volume of 0.3 to 0.45 ml / g. Optionally, the activated alumina porous material prepared using the above method has an ignition loss of 7% or less and a sodium oxide content of 0.45% or less.

[0034] Optionally, the inorganic porous material of the present invention employs porous alumina prepared using the above-mentioned method, or a porous alumina material having equivalent physical and chemical properties. Activated porous alumina materials generally have better strength and alumina activity than other inorganic materials, and their porosity and specific surface structure make them more suitable for the adsorption of sodium chlorite. In addition, activated alumina is an amphoteric substance and can automatically adjust the acid-base balance, making it easier to control the amount of chlorine dioxide released.

[0035] According to yet another embodiment of the present invention, there is provided an application of the above solid material for air purification. According to yet another embodiment of the present invention, there is provided an application of the above solid material for disinfection.

[0036] Optionally, the solid material is used in a fresh air system or air cleaner. The technical solutions according to the embodiments of the present invention can achieve the following beneficial technical effects:

[0037] The solid material of the present invention can excite light of a specific wavelength between 400 and 580 nm via a fluorescent material under visible light irradiation. This specific wavelength of light can excite the photocatalytic activity of nano-titanium dioxide, helping the sodium chlorite encapsulated in the solid material to slowly release an appropriate amount of chlorine dioxide gas. Furthermore, by using an appropriate packaging material or stabilizer, sodium chlorite can be encapsulated within the pores or on the surface of the solid material, resulting in long-term stable sodium chlorite. In addition, the preparation process of the solid material of the present invention is simple, raw materials are readily available, and the loss or decomposition of sodium chlorite during preparation is avoided. This overcomes the drawbacks of chlorine dioxide-loaded materials, such as their short shelf life, difficulty in storage, and / or low efficacy. Furthermore, the chlorine dioxide gas slowly released by the solid material of the present invention can decompose VOC gases in the air, such as formaldehyde, thereby enabling airborne disinfection.

[0038] Embodiment The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Apparently, the described embodiments are only a part, rather than all, of the embodiments of the present invention.

[0039] Embodiment 1 Inorganic porous activated alumina material (specific surface area 287m 2Weigh out 52 g of a 0.41 ml / g (average particle size 18 nm), 18 g of nano-titanium dioxide, 4 g of fluorescent material (purchased from Wuqiang Liche Luminous Material Co., Ltd.), 24 g of sodium chlorite (purchased from Shandong Vosges Group Co., Ltd.), 2 g of sodium lignosulfonate (purchased from Hebei Liche Photoelectric Material Co., Ltd.), 2 g of polyethylene glycol 1200 (purchased from Hengshui Donghai Chemical Equipment Co., Ltd.), and 6 g of polyvinyl alcohol (purchased from Hengshui Donghai Chemical Equipment Co., Ltd.). The phosphor was formulated into a paste using 500 ml of polyethylene glycol 1200 aqueous solution (0.1 wt % polyethylene glycol 1200 concentration), and the mixture was stirred to disperse uniformly. This paste-like phosphor is mixed with nano-titanium dioxide (average particle size 21 nm) and sodium lignosulfonate (molecular weight 634.5), then sprayed onto an inorganic porous material carrier and stirred to ensure uniform adsorption and mixing of the inorganic material, forming a semi-finished product.

[0040] The sodium chlorite and the semi-finished product are mixed and placed in a granulator, and then 500 ml of a binder, an aqueous polyvinyl alcohol solution (polyvinyl alcohol concentration: 5 wt%), is sprayed onto the mixture to coat and granulate the mixture. The temperature is then increased to 600°C at a rate of 1°C / min, and the mixture is maintained at 600°C for 2 hours to obtain a solid particle product.

[0041] The solid particle product of this embodiment can be activated to release chlorine dioxide gas. Detection is performed using the following method: the product of this embodiment is placed under a 365 nm ultraviolet lamp (10 to 15 cm away from the ultraviolet lamp) in a dark room and irradiated for 5 minutes, or exposed to natural light to make the product glow. After the light source is turned off, the product of this embodiment continues to glow for more than 30 minutes in the dark, indicating that the product of this embodiment is activated. Furthermore, the slowly released chlorine dioxide gas is continuously detected around the solid particle product of this invention. The changes in the time and concentration of the slowly released chlorine dioxide gas are tested as follows.

[0042] Embodiments 2 to 6 The air purification solid materials according to Embodiments 2 to 5 are prepared according to the same preparation method as in Embodiment 1, except that the components and compositions are different. The specific composition ratios are shown in Table 1 below.

[0043] Comparative Example 1 The present solid particle material containing chlorine dioxide and porous alumina, prepared by the prior art impregnation method, is adopted. The inorganic porous activated alumina material (specific surface area 287 m) 2 52 g of HCl (having a pore volume of 0.41 ml / g and a pore volume of 0.41 ml / g) and 24 g of sodium chlorite (purchased from Shandong Vosges Group Co., Ltd.) are weighed out. 24 g of sodium chlorite is dissolved in 500 ml of water to produce an aqueous sodium chlorite solution, and an inorganic porous activated alumina material is immersed in the aqueous sodium chlorite solution to form a solid material adsorbing sodium chlorite. This solid material is the solid material prepared in Comparative Example 1.

[0044] [Table 1] The air purification and disinfection effects of the solid materials prepared in Examples 1 to 6 and Comparative Example 1 were tested using the following test methods. A UV-visible spectrophotometer was used to test the concentration of chlorine dioxide gas released around the solid material at different time points. The antibacterial, disinfectant, and air purification effects of household electrical appliances and similar electrical appliances were tested using national standard GB21551.3-2010. The formaldehyde decomposition performance was tested at different time points using national standard GB / T18801 air purifier. Additionally, the test procedures were performed in accordance with the "Technical Standard for Disinfection" (2008).

[0045] [Table 2] Chlorine dioxide gas concentration (mg / m 3 ) is tested at a distance of 5 cm from the air outlet. Specifically, an ultraviolet-visible spectrophotometer is used to measure the concentration of chlorine dioxide gas released around the solid material at 1, 3, 6, 10, and 24 hours and on the 7th day. Table 2 shows the detection results of the concentration of chlorine dioxide released by the solid materials of Embodiments 1 to 6 and Comparative Example 1. All units in Table 2 are milligrams of chlorine dioxide gas per cubic meter of air (mg / m 3 ). From Table 2, it can be seen that over time (1 hour to 24 hours, or even 7 days), the solid materials prepared in embodiments 1 to 6 of the present invention can release chlorine dioxide gas slowly and steadily. Even after a long period of 7 days, the solid materials in embodiments 1 to 6 of the present invention can release chlorine dioxide gas at a rate of at least 0.094 mg / m 3 The solid material prepared in Comparative Example 1 releases a large amount of chlorine dioxide gas from the first hour, but after 10 hours, the release of chlorine dioxide gas decreases significantly, and after 7 days, it releases an almost undetectable amount of chlorine dioxide gas. Thus, compared with the existing material (Comparative Example 1), the solid materials in Embodiments 1 to 6 of the present invention can release chlorine dioxide gas slowly and steadily, and release a relatively high concentration of chlorine dioxide gas that is detectable even after 7 days of use.

[0046] [Table 3] Using the solid material prepared in Embodiment 1 as a representative, the formaldehyde decomposition performance of the solid material prepared in the present invention and the solid material prepared in Comparative Example 1 was tested. Specific testing methods were performed in accordance with the QB / T2761-2006 test standard. 100 g of the particulate material prepared in Embodiment 1 and 100 g of the particulate material prepared in Comparative Example 1 were left at room temperature (20±1°C) and 25% humidity for the times shown in Table 3 (i.e., 1, 10, and 24 hours, and 7 days), and then immersed in a 1.5 m 3 Each chamber was previously filled with an equal amount of formaldehyde gas, and the formaldehyde concentration was adjusted to 1.0 mg / m 3 In addition, a fan was installed in each laboratory to circulate the air within the laboratory. After placing the particulate material in the laboratory, the timer was started and the formaldehyde concentration in the laboratory was tested approximately one hour later. The initial concentration of formaldehyde in the laboratory (all 1.0 mg / m 3 The formaldehyde removal rate is calculated by dividing the difference between the initial formaldehyde concentration and the initial formaldehyde concentration in each laboratory after the solid material was applied. Specific test results are shown in Table 3. Table 3 shows that, compared with the product of Comparative Example 1, the solid material prepared in accordance with the present invention can stably remove formaldehyde gas from the air for a long period of time.

[0047] [Table 4] The disinfecting effect of the solid material of the present invention is tested using the solid material prepared in embodiment 1 of the present invention as a representative. 10 g of the particulate material prepared in embodiment 1 and 10 g of the particulate material prepared in comparative example 1 are placed at room temperature (20±1°C) and humidity 25% for the times shown in Table 3 (i.e., 1, 10, and 24 hours, and 7 days), and then immersed in water for 1 m. 3The solid material was placed in each chamber. The same amount of bacteria was injected into each chamber. After the particulate material was placed in the chamber, timing was started, and the number of nuisance bacteria in the chambers was observed approximately 24 hours later. The ratio of the difference between the initial number of nuisance bacteria in the chamber and the number of nuisance bacteria in each chamber tested after the solid material was applied to the initial number of nuisance bacteria was used as the nuisance removal rate. The test results in Table 4 show that the solid material product prepared in accordance with the present invention can stably release chlorine dioxide gas for a long period of time and has a significant disinfecting effect on general bacteria in the air. In addition, the test results for the product of Comparative Example 1 show that, over a long period of time, the disinfecting effect of the product of Comparative Example 1 is significantly inferior to that of the product prepared in accordance with the present invention.

[0048] The foregoing content is merely used to describe the technical solution of the present invention, and is not intended to limit the protection scope of the present invention. Any simple modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention shall fall within the essence and scope of the technical solution of the present invention.

Claims

1. A solid material comprising 50-60 wt% of an inorganic porous material, 10-20 wt% of nano-titanium dioxide, 3-5 wt% of a fluorescent material, 20-30 wt% of sodium chlorite, 3-5 wt% of sodium lignosulfonate, 1-10 wt% of polyethylene glycol, and 1-10 wt% of polyvinyl alcohol, wherein the weight percentages are the weight ratios of each component to the total weight of the solid material.

2. The solid material according to claim 1 , wherein the inorganic porous material is activated alumina or activated zeolite.

3. The activated alumina has a viscosity of 200 to 350 m as measured according to the BET test method. ２ 3. The solid material according to claim 2, having a specific surface area of ​​0.3 to 0.45 ml / g, a pore volume of 0.3 to 0.45 ml / g, and an average pore diameter of 2 to 50 nm.

4. The activated zeolite has a viscosity of 500 to 800 m as measured according to the BET test method. ２ 3. The solid material according to claim 2, having a specific surface area of ​​0.3 to 0.85 ml / g, a pore volume of 0.3 to 0.85 ml / g, and an average pore diameter of 2 to 60 nm.

5. 2. The solid material according to claim 1, wherein the fluorescent material is an alkaline earth aluminate fluorescent material that emits fluorescence at a wavelength of 400 to 580 nm.

6. 2. The solid material for air purification according to claim 1, wherein the polyethylene glycol has a weight average molecular weight of less than 2,000.

7. 2. The solid material according to claim 1, wherein the nano-titanium dioxide is titanium dioxide having an average particle size of 1 to 150 nm.

8. 2. The solid material of claim 1, wherein the sodium lignosulfonate has a molecular weight of 400 to 700.

9. A method for preparing the solid material according to any one of claims 1 to 8, comprising the steps of: Weighing inorganic porous material, nano titanium dioxide, fluorescent material, sodium chlorite, sodium lignosulfonate, polyethylene glycol, and polyvinyl alcohol; preparing a uniformly dispersed paste from the fluorescent material and a polyethylene glycol aqueous solution to prepare a first slurry; uniformly mixing the nano-titanium dioxide, the sodium lignosulfonate, and the first slurry to prepare a second slurry; Spraying the second slurry onto the inorganic porous material and stirring the inorganic porous material while spraying to form a semi-finished product in which the second slurry is uniformly adsorbed on the inorganic porous material; and mixing the sodium chlorite and the semi-finished product, putting the mixture into a granulator, spraying an aqueous polyvinyl alcohol solution into the granulator for granulation, and then drying to prepare the solid material; The method comprising:

10. 10. The method according to claim 9, wherein the concentration of the aqueous polyethylene glycol solution is 0.05 to 0.1% by weight.

11. The method according to claim 9 or 10, wherein the concentration of the aqueous polyvinyl alcohol solution is 1 to 8% by weight.

12. 12. The method according to any one of claims 9 to 11, wherein the drying step comprises heating the granulated particles to 500 to 600°C at a rate of 1 to 3°C / min and then maintaining that temperature for 1.5 to 5 hours.

13. The method according to any one of claims 9 to 12, wherein the fluorescent material is prepared into a slurry using the polyethylene glycol aqueous solution, and the slurry is uniformly dispersed using ultrasonic waves.

14. The inorganic porous material is activated alumina, and the activated alumina is prepared using the following method: Adding a rapid dehydration powder (ρ-alumina powder) to hydrated aluminum hydroxide and carrying out rapid dehydration to prepare a first alumina material; adding macroporous pseudo-boehmite to the first alumina material and uniformly mixing the mixture to prepare a second alumina material; completing the second alumina material using microwaves; and calcination at a temperature of 450 to 800°C to prepare the activated alumina material; The method according to any one of claims 9 to 13.

15. 9. The solid material according to claim 1, wherein the solid material is a material for purifying air.

16. 16. The application of claim 15, wherein the solid material is used in a fresh air system or an air cleaner.

17. The use of the solid material according to any one of claims 1 to 8 for disinfection.

18. 18. The application of claim 17, wherein the solid material is used in a fresh air system or an air cleaner.

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