Method for Manufacturing a Composition for Removing Atmospheric Odors and the Composition Manufactured Thereby

Abstract

The present invention relates to a method for manufacturing an odor removal composition for purifying atmospheric odors occurring in a specific space or area, and to the composition itself. According to an embodiment of the present invention, substances causing odors are removed and purified through an adsorption mechanism and a photocatalytic reaction by spraying into the atmosphere of the space or area where odors occur. At the same time, the removal and purification functions can be maintained by allowing the activity of the photocatalytic reaction to be partially sustained even when light irradiation by a light source is stopped, through the phosphorescent effect of a phosphorescent material.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing an odor removal composition for purifying atmospheric odors occurring in a specific space or area, and to the composition itself. Background Technology

[0002] As rapid industrialization progresses, industrial and residential areas are becoming close to each other. Although pollution control facilities are being operated to remove air pollutants that are inevitably generated during the manufacturing process, complaints regarding odors frequently arise from residential areas and nearby factories, causing disruptions to production activities.

[0003] Although pollution control facilities are operated using methods such as absorption, adsorption, combustion, and filtration to prevent odors and address public complaints, there are issues regarding the application methods, efficiency, and economic feasibility depending on the characteristics of air pollutants.

[0004] Generally, air pollutants include particulate matter and gaseous substances. For particulate matter, appropriate methods are applied considering factors such as moisture content, particle size, density, and the presence of oil, while for gaseous substances (VOCs, odors, THC, specific hazardous substances, etc.), combustion, absorption, and adsorption methods are applied individually or in combination of two or more.

[0005] Methods such as combustion, adsorption, and absorption are applied for the treatment of gaseous substances (VOCs, odors, THC, specific hazardous substances, etc.). However, since combustion may require pre- and post-treatment facilities and incurs high installation and maintenance costs, adsorption and absorption methods are mostly applied except in special cases.

[0006] In the case of adsorption, pollutants are adsorbed into the pores of a porous material (adsorbent), and the adsorbent is replaced when its adsorption capacity is exceeded (hereinafter referred to as "breakthrough"). Factors affecting the breakthrough of the adsorbent include the influent concentration, whether pretreatment (including dust, moisture, oil, etc.) has been performed, and drift. If the system continues to operate without replacing the adsorbent even after the breakthrough point has passed, the concentration after treatment may be higher than the concentration before treatment, potentially exceeding environmental standards; therefore, the breakthrough point (the time for adsorbent replacement) must not be missed. Furthermore, if drift occurs, only a portion of the adsorbent is utilized, which negatively impacts efficiency and economic viability.

[0007] In the case of absorption, the most commonly applied method involves using only pure water or adding a chemical solution suitable for the purpose to the water to form a water film or mist, thereby inducing contact between the liquid and gas phases. This method has the disadvantage of requiring excessive water spraying or excessive chemical injection to increase treatment efficiency, introducing various packing materials to increase retention and contact times, and making the equipment excessively large.

[0008] Consequently, there is growing interest in technology that can enhance purification efficiency by spraying purification substances into odor-generating areas using a spray method, thereby acting directly on the atmosphere and the odor-causing substances. Prior art literature

[0009] Korean Registered Patent No. 2016146 Korean Registered Patent No. 0475276 The problem to be solved

[0010] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a composition for removing odors from the atmosphere that can maximize purification efficiency by purifying substances causing odors through a composition containing a photocatalytic function by spraying them into the atmosphere of an odor-generating area, while simultaneously enabling continuous purification. means of solving the problem

[0011] As a means to solve the above-mentioned problem, the present invention provides a method for manufacturing a composition for removing atmospheric odors, comprising: a first step of synthesizing a first synthetic material by mixing a photocatalytic material nanosol having photocatalytic properties, an organic polymer, and an acidic catalyst; a second step of synthesizing a second synthetic material by mixing a porous material selected from the group consisting of alumina, zirconia, zeolite, illite, titana, silica, tourmaline, and germanium with the first synthetic material formed in the first step; and a third step of synthesizing a third synthetic material by mixing a phosphorescent material with the second synthetic material. Effects of the invention

[0012] According to an embodiment of the present invention, by purifying the odor-causing substances through a composition comprising a photocatalytic nanosol and an organic polymer by spraying them into the atmosphere of an odor-generating space, and simultaneously removing them from the atmosphere in the first place, and enabling a continuous mineralization function through a photocatalytic reaction, the purification efficiency of air pollutants can be maximized through the complete removal of pollutants.

[0013] In addition, the composition of the present invention adsorbs odor-causing substances in the form of an aerosol in the atmosphere and falls to the ground, thereby primarily removing pollutants in the atmosphere, and subsequently mineralizes the pollutants through a photocatalytic reaction caused by incoming light, so as to sustain the purification function, so as to increase purification efficiency.

[0014] In addition, the composition of the present invention includes a phosphorescent material, so that the photocatalytic reaction of the photocatalytic material can be sustained through the phosphorescence of the phosphorescent material even when the light supply is interrupted, thereby increasing the purification efficiency. Brief explanation of the drawing

[0015] FIG. 1 is a process flowchart illustrating a method for manufacturing a purification composition for removing atmospheric odors according to an embodiment of the present invention (hereinafter referred to as the 'present invention'). Figures 2 and 3 show the results of measuring the efficiency of removing ammonia odor through an adsorption mechanism, obtained by repeating the test 8 times using the mixed composition of the embodiment of the present invention and the compositions of Comparative Examples 1 to 4. FIGS. 4 to 7 are the results of comparing the odor removal efficiency of a composition (third composite) according to an embodiment of the present invention and a composition synthesized without mixing a phosphorescent material in an embodiment, under different light irradiation and light blocking conditions at 100 ppm of ammonia (NH3). FIG. 8 sequentially illustrates the odor removal mechanism of a composition according to an embodiment of the present invention. Specific details for implementing the invention

[0016] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to ensure that the spirit of the present invention is sufficiently conveyed to those skilled in the art.

[0017] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0019] FIG. 1 is a process flowchart illustrating a method for manufacturing an odor removal composition according to an embodiment of the present invention (hereinafter referred to as the 'present invention').

[0020] Referring to FIG. 1, the present invention may comprise a first step of synthesizing a first synthetic material by mixing a photocatalytic material nanosol having photocatalytic properties, an organic polymer, and an acidic catalyst; a second step of synthesizing a second synthetic material by mixing a porous material selected from the group consisting of alumina, zirconia, zeolite, illite, titana, silica, tourmaline, and germanium with the first synthetic material formed in the first step; and a third step of synthesizing a third synthetic material by mixing a phosphorescent material with the second synthetic material.

[0021] Specifically, in step 1, a process of synthesizing a photocatalytic material (nanozol), an organic polymer, and an acidic catalyst by mixing them to express the photocatalytic properties of the purification composition is performed.

[0022] The above photocatalytic material may be any one selected from the group consisting of TiO2, Al2O3, CdS, ZrO2, SrTiO3, SnO2, ZnO, Nb2O5, BiVO4, SiO2, WO3, and Ag3VO4. Alternatively, any one selected from the inorganic salts of chloride, sulfate, and nitrate of any of the above-mentioned materials may be applied. The photocatalytic material in the present invention performs a purification action through a photocatalytic reaction when sprayed into the atmosphere and adsorbed with odor-causing substances.

[0023] Particularly preferably, the photocatalytic material is mixed with any one material selected from the group consisting of TiO2, Al2O3, CdS, ZrO2, SrTiO3, SnO2, ZnO, Nb2O5, BiVO4, SiO2, WO3, and Ag3VO4 to reduce the band gap and increase visible light responsiveness, thereby enabling the material to react even under sunlight when sprayed into the atmosphere.

[0024] In the case of the organic polymer mixed with such a photocatalytic material (nanozol), any one selected from graphene, organic fibers including cellulose fibers, or chitosan-based materials including chitosan may be applied. The organic polymer included in this composition performs the function of enhancing adsorption of odor-causing substances when sprayed into the atmosphere.

[0025] In the case of chitosan-based materials, any one selected from chitin or chitosan, chitin or chitosan-based surfactants, or chitin or chitosan-based oligomers may be applied. For example, the surfactant may be applied by including 0.001 to 10 parts by weight of high-molecular-weight chitosan based on 100 parts by weight of the first mixture. When chitosan is used as a surfactant in the present invention, chitosan is used as a high-molecular-weight coagulant to aggregate suspended matter in water as a high-molecular-weight electrolyte; since it is insoluble in water, an organic or inorganic acid is diluted and used as a solvent during preparation. Chitosan is a cationic high-molecular-weight electrolyte substituted with amino groups through a chemical deacetylation reaction of chitin, and it aggregates with negatively charged substances such as algae and colloidal substances in water through electrical neutralization bonding.

[0026] Chitosan can be mixed with an acidic catalyst described below, and, for example, it is preferable to implement such an acidic catalyst as a component containing acetic acid. By doing so, the purification composition according to the present invention implements a mechanism for adsorbing components such as substances that cause odors in the atmosphere. Furthermore, after adsorption and subsequent fall to the ground, chitosan, which is an environmentally friendly material, secures time for the pollutants to be mineralized by a photocatalytic reaction, thereby minimizing the side effects of the pollutants volatilizing through a reversible reaction and leaching them back into the atmosphere, thereby reducing harmfulness. According to one embodiment of the present invention, it is preferable that the weight ratio of chitosan to acetic acid in the composition of the present invention be (0.5 to 10): (1 to 50).

[0027] Specifically, when chitosan is applied in the present invention, in order to utilize both the excellent adsorption characteristics of chitosan for metal ions and heavy metal ions and the electron consumption characteristics of the polymer electrolyte, an intermediate composite is formed by attaching a photocatalytic material (doped with a transition metal) to an organic polymer (chitosan), and a final composite structure is formed by attaching this to an adsorbent support. Since the final composite structure formed by the above process can more effectively capture pollutants on the adsorbent particles, the removal efficiency of atmospheric pollutants increases, and furthermore, the mineralization removal efficiency based on the photocatalytic reaction (improved with the polymer electrolyte and transition metal) for the captured pollutants is also enhanced.

[0028] The above acidic catalyst is an organic acid, which is a general term for acidic organic compounds, and hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, or carbonic acid, such as formic acid, acetic acid, or palmitic acid (CH3(CH2) 14Any one of COOH, oxalic acid (C2H2O4), benzoic acid, salicylic acid, citric acid, stearic acid, or uric acid may be applied, and in one embodiment of the present invention, it is preferable to apply acetic acid. In particular, in the case of basic catalysts rather than acidic catalysts, the initial reaction rate is too fast, making reaction control difficult. Furthermore, unlike acidic catalysts, gelation occurs immediately upon the formation of spherical particles, causing the liquid to become cloudy or self-colloidization, which acts as an interfering factor with the binding with chitosan. Additionally, there are problems such as difficulty in establishing optimal conditions. Therefore, in the present invention, it is preferable to use an acidic catalyst. The appropriate amount of acidic catalyst added is preferably 0.001 wt% to 20 wt%, suitably 0.01 wt% to 10 wt%, and more suitably 0.1 wt% to 5 wt% based on the total weight of the composition.

[0029] When an organic acid is used for this purpose, the transition metal binds more effectively to titanium dioxide (TiO2) (while simultaneously removing residual base cations by replacing them with hydrogen ions), so the 'transition metal-titanium dioxide composite' can improve photoresponsiveness in visible light by reducing the bandgap energy required to form 'electron-holes', and can improve photocatalytic reaction efficiency by controlling (delaying, hindering) the recombination of electron-holes within titanium dioxide (TiO2) through electrons excited in titanium dioxide (TiO2) being captured by the doped material.

[0030] Electrons excited by light are transferred to external oxygen through the surface near the transition metal, forming superoxide radicals (·O2 - It generates electrons, and the holes generated when electrons are excited react with nearby water molecules (moisture) to produce hydroxyl radicals (·OH), and ROS substances such as superoxide radicals and hydroxyl radicals decompose organic pollutants captured by adsorption.

[0031] Next, in the second step, a process is performed to form a second composite material by mixing a porous material (Mesoporous Material) selected from the group consisting of alumina, zirconia, zeolite, illite, titana, silica, tourmaline, and germanium, which are functional porous materials, with the first composite material formed in the first step. In the case of the adsorbent porous material, it has an average particle size of 100 nm to 1000 µm, and the surface of the adsorbent particle is coated with a transition metal-doped photocatalytic material and an organic polymer coated with such a photocatalytic material, or the adsorbent particle is supported on it. For this purpose, it is preferable that the particle size be larger than that of the 'composite of transition metal-doped photocatalytic material (e.g., TiO2)-organic polymer'.

[0032] The second synthetic material formed through these two steps can adsorb odor-causing gaseous substances (VOCs, odors, THC, specific hazardous substances, etc.) when sprayed into the atmosphere, and then perform the function of removing odors through a photocatalytic reaction using light irradiated by a light source.

[0034] Subsequently, in the present invention, a process of forming a third synthetic material by mixing a phosphorescent material with the second synthetic material may be performed. In this case, the third step may proceed to a step of forming by injecting a phosphorescent material into the second synthetic material and heating and stirring it, and injecting polyethylene glycol into the heated and stirred solution.

[0035] In particular, in this case, the phosphorescent material can be selected and applied as a phosphorescent phosphorescent agent from among strontium aluminate-based (SrAl2O4), ZnS:Cu,Cas:Bi, (Ca,Sr)S:Bi, and (Zn,Cd)S:Cu, taking into account environmental hazards, material stability, and phosphorescent efficiency. For example, a strontium aluminate-based (doped with europium (Eu)) material that satisfies the above conditions can be used as a phosphorescent material.

[0036] The luminous material in the present invention is a material that absorbs light and slowly releases energy by causing a phosphorescence phenomenon in a state where electrons are excited by light. Since it absorbs light and stores energy and then releases the stored energy when light is blocked, when it adsorbs odorous substances in the atmosphere and falls to the ground, the activity of the photocatalytic reaction by the luminous material continues weakly even if the supply of light from the light source is stopped.

[0037] In other words, the photocatalytic composite material combined with an odor source according to the present invention can perform deodorizing, antibiotic activity, and environmental pollution prevention functions to a limited extent even under conditions where light irradiation is discontinued. Therefore, the luminous material of the present invention can be used very effectively to maintain some of the activity of the photocatalytic reaction in environments (conditions) where light sources such as sunlight or UV cannot be sustained for a long time, and in places where exposure to light is periodically restricted, such as refrigerators, closets, indoor spaces, air and water filtration systems (air purifiers, water purifiers), food processing and storage, and waste containers.

[0039] [Example]

[0040] As a starting material for the photocatalyst, 20g of TiO2 nanoparticle powder was mixed and diluted with 1000mL of purified water. To this, a solution of 300g of chitosan dissolved in 150g of 10wt% acetic acid and 0.1mL of 35% hydrochloric acid (HCl) diluted in 500g of distilled water as a hydrolysis acidic catalyst were slowly added while stirring and thoroughly mixed.

[0041] Among the transition metals silver precursors silver nitrate (AgNO3), silver nitrite (AgNO2), silver chloride (AgCl), or silver perchlorate (AgClO4), silver nitrate (AgNO3) was mixed with silver nitrate (AgNO3), PVP as a dispersion stabilizer, and ethylene glycol as an organic solvent. After adding AgNO3 at a composition ratio (molar ratio) of AgNO3:TiO2 = 1:10, the mixture was mixed at 35°C for 30 minutes while stirring at 300 rpm to prepare the first synthetic material (mixed solution).

[0042] Subsequently, the first synthetic material was mixed with a zeolite (porous adsorbent) having an average particle size of 110 μm, and a synthesis reaction of an 'organic polymer-transition metal-titanium dioxide composite' was carried out inside and on the surface of the zeolite, and a second synthetic material was formed by mixing transition metal-doped titanium dioxide so that the weight ratio of the adsorbent particles was 1:5.

[0043] Subsequently, a strontium aluminate-based (SrAl2O4) phosphorescent material was mixed with polyethylene glycol and the second synthetic material, and heated and stirred at 80°C to form the third synthetic material through a mixing reaction.

[0044] The following comparative experiment was conducted using the above third synthetic material.

[0046] [Comparative Example 1]

[0047] In the manufacturing process of Example 1, the process of mixing the phosphorescent material was omitted, and a third mixture was formed using a photocatalytic composite composition.

[0049] [Comparative Example 2]

[0050] In the manufacturing process of Example 1, the porous adsorbent zeolite was not mixed, and the third mixture was formed with the photocatalytic composite composition.

[0052] [Comparative Example 3]

[0053] In the manufacturing process of Example 1, chitosan was not mixed in the process of creating the first mixed material, and the third mixture was formed with the photocatalytic composite composition.

[0055] [Comparative Example 4]

[0056] In the process of Example 1, a third mixture was formed with a photocatalytic composite composition without mixing chitosan, zeolite, and phosphorescent material.

[0058] The odor removal efficiency of ammonia, an odor-causing substance, was tested using the composition of the embodiment of the present invention prepared above and the compositions of Comparative Examples 1 to 4.

[0060] 1. Odor Removal Efficiency Experiment

[0061] A BOX device measuring 40 cm x 40 cm x 60 cm was constructed using acrylic sheets to prevent external leakage of the test gas. It must be equipped with a nozzle and an outlet through which the test sample can be sprayed, and the test equipment inside the container must be homogeneous. The solutions of Example 1 and Comparative Examples 1 to 4 were diluted 20 times with distilled water based on the usage concentration (w / v%), and 20 mL of the resulting solution was used for the test.

[0062] In addition, for the deodorization performance test, ammonia, the main odor-causing substance in the livestock industry, was tested using a detector tube gas measurement method.

[0064] [Experimental Method]

[0065] 1) Inject ammonia gas and measure the concentration with a detector tube so that the ammonia concentration inside the device becomes 100 ppm (w / v), and then record the initial concentration (B) of the gas inside the test container without a sample.

[0066] 2) 20 mL of test gas (A), containing a specimen inside a test apparatus adjusted to the initial concentration, is sprayed through a sprayer.

[0067] 3) Measure the concentration of odor components by collecting gas from the test container using a gas sampler specified in KS M 0062 (Detector Tube Type Gas Detector), and record the concentration (B) measured through the direct-reading detector tube.

[0068] Odor Reduction Rate [ORR](%) = 〔 (BA) / B) 〕 x 100

[0069] ORR: Odor Reduction Ratio (%)

[0070] B: Average test gas concentration (ug / L) in the absence of a test specimen

[0071] A: Average test gas concentration (ug / L) with test specimen present

[0073] FIGS. 2 and 3 show the results of measuring the ammonia removal efficiency through 8 repeated tests using the mixed composition of the embodiment of the present invention and the compositions of Comparative Examples 1 to 4.

[0074] Overall, it can be confirmed that the odor removal efficiency by the adsorption mechanism of the embodiment (A: product) of the present invention is 97.55% at maximum and 91.36% on average, showing superior odor removal efficiency compared to the comparative example that does not include one or both of the porous adsorbent material and chitosan.

[0076] FIGS. 4 to 7 are the results of comparing the change in odor removal efficiency with different light irradiation and blocking conditions under conditions of 100 ppm ammonia (NH3) in a controlled space for the composition according to the embodiment of the present invention, and the experimental results of the composition synthesized without mixing phosphorescent material in the embodiment of the present invention.

[0077] Figure 4 is a table image summarizing the conditions and results of the experiment.

[0078] Referring to FIG. 4, after 30 minutes have elapsed from the initial start (0 minutes) of the composition according to the embodiment of the present invention (the time when the mechanism for removing odors from the atmosphere by adsorption is completed), the odor removal rate was compared with (1) a dark room condition in which light is blocked for 2 hours, (2) a condition in which only UV is irradiated for 2 hours, (3) a dark room condition in which light is blocked for 100 minutes after exposure to UV for 20 minutes, and (4) the odor removal rate after forming a dark room condition in which light is blocked for 100 minutes after exposure to UV for 20 minutes with the same composition from which the phosphorescent substance has been removed.

[0079] It can be confirmed that the odor removal rate of the composition according to the embodiment of the present invention is 90.47% under (1) conditions where light is blocked for 2 hours in a dark room, and 99.17% under (2) conditions where only UV is irradiated for 2 hours. (3) under conditions where a dark room is formed with light blocked for 100 minutes after exposure to UV for 20 minutes, the removal rate is 96.20%. This is compared with the same composition in which the odor removal efficiency was 94.49% when the phosphorescent substance was removed under (4) conditions where a dark room is formed with light blocked for 100 minutes after exposure to UV for 20 minutes.

[0080] Referring to FIGS. 5 to 7, in the experiment of FIG. 4, FIG. 5 is a graph showing the results of the odor removal test according to additional experimental conditions, FIG. 6 shows the odor removal efficiency by condition over time in FIG. 4, and FIG. 7 shows the NH3 removal rate at the point when both stages of FIG. 4 are completed.

[0081] As illustrated in FIG. 5, in the ‘(1) dark room condition’ of FIG. 4, since it is a dark room with no light source and light blocked, only the odor removal effect due to the adsorption mechanism of the composition according to the embodiment is observed, and in the ‘(2) UV irradiation condition’, the photocatalytic reaction is activated by the irradiated UV, and the odor removal effect due to the photocatalytic reaction is observed along with the adsorption mechanism. In addition, in the condition of ‘(4) dark room after UV irradiation (removal of phosphorescent material)’ of FIG. 4, an oxidation reaction due to the activation of the photocatalytic material occurs through UV irradiated for 20 minutes on the same composition without phosphorescent material, and subsequently, when the light is blocked to create a dark room condition, the oxidation reaction due to the activation of the photocatalytic material is limited, so no additional increase in removal rate is observed.

[0082] On the other hand, in the case of the composition according to the embodiment of the present invention, which is the condition of ‘(3) dark room (containing phosphorescent material) after UV irradiation’ in Fig. 4, it was confirmed that the phosphorescent material is activated and phosphorescent through 20 minutes of UV irradiation, and then, after the light is blocked, the photocatalytic material is activated by the phosphorescent energy (transferred electrons) and partially continues the oxidation reaction, thereby increasing the removal efficiency.

[0083] FIG. 8 sequentially illustrates the odor removal mechanism when applying the embodiment of the present invention in FIG. 4, wherein (a) in step 1, a process of adsorbing an odor-causing substance (NH3) proceeds, and subsequently (b) in step 2, a phosphorescent material is activated through UV irradiation to become phosphorescent, and at the same time, the photocatalyst is activated to cause an oxidation reaction. Subsequently, (c) when the detailed condition of step 2, which is a dark room condition (a condition where light is blocked), is met, the photocatalyst material is activated by the energy (transferred electrons) accumulated by the phosphorescent material, and the oxidation reaction continues to some extent even under dark conditions.

[0085] As described above, the technical concept of the present invention has been specifically described in preferred embodiments; however, the aforementioned preferred embodiments are for illustrative purposes only and are not intended to be limiting. As such, a person skilled in the art will understand that various embodiments are possible within the scope of the technical concept of the present invention through the combination of embodiments thereof.

Claims

Claim 1 A first step of mixing a photocatalytic material nanosol having photocatalytic properties, an organic polymer, and an acidic catalyst to form a photocatalytic-organic polymer composite in which the photocatalytic material is bound to the organic polymer; a second step of mixing the photocatalytic-organic polymer composite formed in the first step so that it is supported on the interior and surface of a porous material to form a composite structure in which the porous material adsorbs odor-causing substances while simultaneously performing a photocatalytic reaction; and a third step of mixing a phosphorescent material into the composite structure formed in the second step above so that the photocatalytic reaction by the phosphorescent material continues even under conditions where the supply of light is blocked; wherein the composition prepared by the first to third steps is sprayed into the atmosphere by the photocatalytic material and the organic polymer to adsorb and capture odor-causing substances and then falls to the ground, wherein the photocatalytic material performs a purification action through a photocatalytic reaction when adsorbed with the odor-causing substances sprayed into the atmosphere, the organic polymer applies chitosan and performs a function of enhancing adsorption with the odor-causing substances sprayed into the atmosphere, and inorganizes the odor-causing substances through the photocatalytic reaction and the sustained reaction by the phosphorescent material, and the porous material of the second step has an average particle size of 100 nm to 1000 µm, and the surface of the adsorbent particles is coated with a transition metal-doped photocatalytic material and an organic polymer coated with the photocatalytic material or the adsorbent A method for preparing a composition for removing atmospheric odors, wherein the photocatalyst-organic polymer composite, in which the photocatalyst material is bonded to the organic polymer, is formed to be larger than the particle size of the photocatalyst-organic polymer composite, wherein the acidic catalyst is acetic acid, and the weight ratio of chitosan to acetic acid is (0.5 to 10): (1 to 50). Claim 2 delete Claim 3 A method for preparing a composition for removing atmospheric odors according to claim 1, wherein the photocatalytic material is selected from TiO2, Al2O3, CdS, ZrO2, SrTiO3, SnO2, ZnO, Nb2O5, BiVO4, SiO2, WO3, Ag3VO4, or their chlorides, sulfates, and nitrates, or the selected material is doped with a transition metal or a lanthanide metal. Claim 4 delete Claim 5 A method for manufacturing an atmospheric odor removal composition according to claim 3, wherein the third step comprises injecting a phosphorescent material selected from strontium aluminate-based (SrAl2O4), ZnS:Cu, Cas:Bi, (Ca,Sr)S:Bi, and (Zn,Cd)S:Cu into a composite structure formed in the second step and heating and stirring, and injecting polyethylene glycol into the heated and stirred solution.

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