Composite material for rapidly purifying gas and preparation method thereof

Abstract

The invention provides a composite material for rapidly purifying gas and a preparation method thereof. The composite material is prepared from the following raw materials: modified metal oxide, 1, 2, 3, 4-cyclobutantetraol, bentonite, activated carbon and hydrogen peroxide. The modified metal oxide is subjected to surface modification by introducing amino silane, metal ions and other functional chemical reagents, so that the specific surface area, the catalytic performance and the gas adsorption capacity of the modified metal oxide are remarkably improved, and the gas purification efficiency is effectively improved. The composite material can efficiently remove harmful gases such as nitrogen oxides and volatile organic compounds, and still keeps excellent purification performance under the conditions of high temperature and repeated recycling. The preparation method comprises the following steps: preparing the modified metal oxide, mixing with other components, adding hydrogen peroxide, forming, drying and the like. The composite material has relatively high gas purification efficiency, relatively long service life and good cycle stability, and is widely applied to the fields of industrial waste gas treatment and air purification.

Description

Technical Field

[0001] This invention relates to gas purification materials and their preparation methods, specifically to a composite material for rapid gas purification. Background Technology

[0002] With the continuous advancement of global industrialization, air pollution has become a major problem affecting the environment and public health. In particular, emissions of industrial waste gas, vehicle exhaust, and harmful gases from chemical production pose a significant threat to air quality. These pollutants include nitrogen oxides, sulfur oxides, and volatile organic compounds, which not only seriously harm human health but also lead to environmental problems such as acid rain and photochemical smog. Existing gas purification technologies typically employ materials such as activated carbon, metal oxides, and catalysts; however, these technologies have some shortcomings, mainly including limited adsorption capacity, low purification efficiency, rapid degradation of catalytic performance, and instability under extreme environments such as high temperature and high humidity.

[0003] Especially when dealing with high-concentration polluting gases, the adsorption capacity of traditional adsorption materials is easily saturated, leading to frequent replacement or regeneration. This not only increases the cost of use but also makes them unsuitable for some special applications. While conventional metal oxide materials possess some catalytic ability in the catalytic degradation of harmful gases, their surface activity is low and their catalytic efficiency is limited, particularly when dealing with complex gas systems, where their performance is poor.

[0004] Therefore, there is an urgent need to develop a new gas purification material that can effectively overcome the limitations of existing technologies and provide more efficient, stable, and durable purification effects, especially in scenarios involving the purification of high-concentration, multi-component gases. Summary of the Invention

[0005] To overcome the shortcomings of existing gas purification technologies, this invention aims to provide a composite material for rapid gas purification and its preparation method. This material can effectively remove various gaseous pollutants, exhibiting excellent purification effects, especially in high-concentration gases and complex gas systems. This invention utilizes the synergistic effect of modified metal oxides and functional organic small molecules. Innovative surface modification techniques enhance the catalytic performance of the metal oxides, and the combination with organic small molecules possessing high adsorption capacity and chemical stability forms a composite material, thereby enhancing the efficiency and stability of gas purification. Bentonite and activated carbon are also added to the composite material to further optimize its adsorption performance and improve its durability in practical applications. The composite material of this invention significantly improves the gas purification rate and has a long service life, enabling stable operation in various harsh environments. It solves the problems of limited adsorption capacity and rapid catalytic efficiency decay of traditional gas purification materials, and has strong market application prospects.

[0006] The objective of this invention can be achieved through the following technical solutions: A composite material for rapid gas purification, comprising the following raw materials in parts by weight: 40-60 parts of modified metal oxide; 20-40 parts of 1,2,3,4-cyclobutanetetraol; 5-15 parts of bentonite; 3-10 parts of activated carbon; and 3-10 parts of hydrogen peroxide. The modified metal oxide is formed by introducing aminosilanes, metal ions, and other functional chemical reagents to modify the surface of the metal oxide, resulting in a material with a higher specific surface area, enhanced catalytic performance, and stronger gas adsorption capacity. This material is widely used in the catalytic degradation, adsorption, and purification of harmful gases.

[0007] Optionally, the modified metal oxide comprises the following raw materials in parts by weight: 30-40 parts titanium dioxide; 20-30 parts aluminum dioxide; 10-20 parts zinc oxide; 5-15 parts iron oxide; 5-10 parts copper chloride; 5-10 parts activated carbon; 10-20 parts ethanol; 10-15 parts deionized water; and 1-5 parts 3-aminopropyltriethoxysilane.

[0008] Optionally, the method for preparing the modified metal oxide includes the following steps: (1) Mix titanium dioxide, aluminum dioxide, zinc oxide and ethanol, and stir until homogeneous; (2) Add 3-aminopropyltriethoxysilane and copper chloride to the above mixture, adjust the pH to 4.5-6.0, and react at 20-25°C for 1-3 hours; (3) The mixture after the reaction is washed with deionized water to remove unreacted impurities, and then dried under vacuum to constant weight; (4) The dried modified metal oxide is calcined at high temperature of 400-600°C for 2-4 hours to improve its surface activity and stability. (5) Cool the calcined modified metal oxide to room temperature to obtain the modified metal oxide.

[0009] Optionally, the stirring speed in step (1) is 200 to 400 rpm.

[0010] Optionally, the pH value of step (2) is 4.5 to 6.0, and the reaction is carried out at 20 to 25°C for 1 to 3 hours.

[0011] Optionally, the drying temperature in step (3) is 60–80°C.

[0012] Optionally, the calcination temperature in step (4) is 400-600°C and the calcination time is 2-4 hours.

[0013] Optionally, a method for preparing a composite material for rapid gas purification includes the following steps: S1, Modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon are added to a mixing device and mixed evenly; S2, add hydrogen peroxide to the mixture and continue stirring to fully disperse the components and allow them to work synergistically; S3 involves molding and drying the uniformly mixed materials to obtain a composite material for rapid gas purification.

[0014] Optionally, the reaction conditions for step S1 are: the stirring speed of the mixing equipment is 200-400 rpm; the reaction conditions for step S2 are: the stirring temperature is 20-25°C and the stirring time is 1-3 hours; and the reaction conditions for step S3 are: the drying temperature is 60-80°C and the drying time is 4-6 hours.

[0015] The beneficial effects of this invention are: This invention significantly increases the specific surface area and active sites of metal oxides by modifying them with aminosilanes and metal ions, thereby greatly enhancing their adsorption and catalytic degradation capabilities for nitrogen oxides and volatile organic compounds (VOCs). Combining 1,2,3,4-cyclobutanetetraol, which possesses high adsorption performance and chemical stability, with activated carbon further enhances the material's purification effect in complex gas environments, maintaining high purification efficiency even under high concentrations and long-term use. Through this innovative composite structure design, the material of this invention exhibits significantly improved reaction rate and processing capacity in gas purification processes, along with longer stability and service life. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 A flowchart illustrating a method for preparing a composite material for rapid gas purification; Figure 2 This is a comparison chart of the performance test results of samples with different ratios. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments. However, the present invention is not limited to the following embodiments. Equivalent adjustments made without departing from the spirit and essence of the present invention should also be considered to fall within the protection scope of the present invention.

[0019] Example 1: This embodiment aims to verify the high-concentration gas purification efficiency using modified metal oxides, ensuring that the composite material can maintain a high purification rate and stability under extreme conditions.

[0020] Group allocation ratio: 60 parts of modified metal oxide (including 40 parts of titanium dioxide, 30 parts of aluminum dioxide, 20 parts of zinc oxide, 10 parts of iron oxide, 10 parts of copper chloride, 10 parts of activated carbon, 15 parts of ethanol, 12 parts of deionized water, and 2 parts of 3-aminopropyltriethoxysilane); 40 parts of 1,2,3,4-cyclobutanetetraol; 15 parts of bentonite; 10 parts of activated carbon; and 10 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide, and ethanol are added to a mixing device in the above weight ratio, and stirred at 350 rpm for 30 minutes to ensure uniform mixing; 3-aminopropyltriethoxysilane and copper chloride are added to the above mixture to adjust the pH to 5.5, and the mixture is reacted at 20°C for 2 hours; the reacted mixture is washed with deionized water to remove unreacted impurities, and then dried at 60°C to constant weight; the dried modified metal oxide is calcined at 500°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon into the mixing device and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 25°C for 2 hours; S4, the uniformly mixed material is then molded and dried at 75°C for 5 hours to obtain the final composite material; Figure 1 As shown.

[0021] Example 2: This embodiment aims to verify the purification efficiency and stability of the composite material during the purification of medium-concentration gases, ensuring the effectiveness of the material in practical applications.

[0022] Group allocation ratio: 50 parts of modified metal oxide (including 35 parts of titanium dioxide, 25 parts of aluminum dioxide, 15 parts of zinc oxide, 8 parts of iron oxide, 7 parts of copper chloride, 8 parts of activated carbon, 12 parts of ethanol, 10 parts of deionized water, and 3 parts of 3-aminopropyltriethoxysilane); 30 parts of 1,2,3,4-cyclobutanetetraol; 10 parts of bentonite; 8 parts of activated carbon; and 8 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide and ethanol are added to a mixing device in the above weight ratio, and stirred at 300 rpm for 20 minutes; 3-aminopropyltriethoxysilane and copper chloride are added to the above mixture, the pH is adjusted to 5.0, and the mixture is reacted at 25°C for 1.5 hours; the mixture after reaction is washed with deionized water to remove unreacted impurities, and then dried at 70°C to constant weight; the dried modified metal oxide is calcined at 450°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon into the mixing device and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 22°C for 1 hour; S4. The uniformly mixed material is molded and dried at a temperature of 70°C for 4 hours to obtain the final composite material.

[0023] Example 3: This embodiment aims to verify the performance of the composite material under low-concentration gas purification conditions and evaluate its purification effect on low-concentration gases.

[0024] Group allocation ratio: 40 parts of modified metal oxide (including 30 parts of titanium dioxide, 20 parts of aluminum dioxide, 10 parts of zinc oxide, 5 parts of iron oxide, 5 parts of copper chloride, 5 parts of activated carbon, 10 parts of ethanol, 12 parts of deionized water, and 2 parts of 3-aminopropyltriethoxysilane); 20 parts of 1,2,3,4-cyclobutanetetrol; 8 parts of bentonite; 5 parts of activated carbon; and 5 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide and ethanol are added to a mixing device in the above weight ratio, and stirred at 250 rpm for 15 minutes; 3-aminopropyltriethoxysilane and copper chloride are added to the above mixture, the pH is adjusted to 4.8, and the mixture is reacted at 22°C for 1 hour; the mixture after reaction is washed with deionized water to remove unreacted impurities, and then dried at 65°C to constant weight; the dried modified metal oxide is calcined at 420°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon into the mixing device and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 20°C for 1.5 hours; S4. The uniformly mixed material is molded and dried at a temperature of 65°C for 4 hours to obtain the final composite material.

[0025] Comparative Example 1: This comparative example aims to verify the effectiveness of materials modified with 3-aminopropyltriethoxysilane alone in gas purification, and to compare it with Example 2 to analyze the impact of 3-aminopropyltriethoxysilane modification on material properties.

[0026] Group allocation ratio: 50 parts of modified metal oxide (including 35 parts of titanium dioxide, 25 parts of aluminum dioxide, 15 parts of zinc oxide, 8 parts of iron oxide, 7 parts of copper chloride, 8 parts of activated carbon, 12 parts of ethanol, 10 parts of deionized water, and 3 parts of 3-aminopropyltriethoxysilane); 30 parts of 1,2,3,4-cyclobutanetetraol; 10 parts of bentonite; 8 parts of activated carbon; and 8 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide, and ethanol were added to a mixing device in the above weight ratio, and stirred at 300 rpm for 20 minutes; 3-aminopropyltriethoxysilane was added to the above mixture to adjust the pH to 5.0, and the mixture was reacted at 25°C for 1.5 hours; the reaction mixture was washed with deionized water to remove unreacted impurities, and then dried at 70°C to constant weight; the dried modified metal oxide was calcined at 450°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon into the mixing device and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 22°C for 1 hour; S4. The uniformly mixed material is molded and dried at a temperature of 70°C for 4 hours to obtain the final composite material.

[0027] Comparative Example 2: This comparative example aims to verify the effectiveness of materials modified with metal ions only in gas purification, and to compare it with Example 2 to analyze the impact of metal ion modification on material properties.

[0028] Group allocation ratio: 50 parts of modified metal oxide (including 35 parts of titanium dioxide, 25 parts of aluminum dioxide, 15 parts of zinc oxide, 8 parts of iron oxide, 7 parts of copper chloride, 8 parts of activated carbon, 12 parts of ethanol, 10 parts of deionized water, and 5 parts of copper chloride); 30 parts of 1,2,3,4-cyclobutanetetraol; 10 parts of bentonite; 8 parts of activated carbon; and 8 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide and ethanol are added to a mixing device in the above weight ratio, and the mixture is stirred at 300 rpm for 20 minutes; copper chloride is added to the above mixture to adjust the pH value to 5.0, and the mixture is reacted at 25°C for 1.5 hours; the mixture after reaction is washed with deionized water to remove unreacted impurities, and then dried at 70°C to constant weight; the dried modified metal oxide is calcined at 450°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon into the mixing device and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 22°C for 1 hour; S4. The uniformly mixed material is molded and dried at a temperature of 70°C for 4 hours to obtain the final composite material.

[0029] Comparative Example 3: This comparative example aims to verify the performance of the material that removes 1,2,3,4-cyclobutanetetraol in gas purification and to compare it with Example 2 to evaluate the role of small organic molecules in improving gas purification efficiency.

[0030] Group allocation ratio: 50 parts of modified metal oxide (including 35 parts of titanium dioxide, 25 parts of aluminum dioxide, 15 parts of zinc oxide, 8 parts of iron oxide, 7 parts of copper chloride, 8 parts of activated carbon, 12 parts of ethanol, 10 parts of deionized water, and 3 parts of 3-aminopropyltriethoxysilane); 10 parts of bentonite; 8 parts of activated carbon; and 8 parts of hydrogen peroxide. Preparation process: S1, titanium dioxide, aluminum dioxide, zinc oxide and ethanol are added to a mixing device in the above weight ratio, and stirred at 300 rpm for 20 minutes; 3-aminopropyltriethoxysilane and copper chloride are added to the above mixture, the pH is adjusted to 5.0, and the mixture is reacted at 25°C for 1.5 hours; the mixture after reaction is washed with deionized water to remove unreacted impurities, and then dried at 70°C to constant weight; the dried modified metal oxide is calcined at 450°C for 2 hours to obtain the modified metal oxide; S2, add the modified metal oxide, bentonite and activated carbon into the mixing equipment and stir evenly; S3, add hydrogen peroxide to the mixture, continue stirring at 22°C for 1 hour; S4. The uniformly mixed material is molded and dried at a temperature of 70°C for 4 hours to obtain the final composite material.

[0031] Performance testing: 1. Gas purification efficiency test This test was used to evaluate the purification efficiency of different materials in purifying gases such as nitrogen oxides (NOx) and volatile organic compounds (VOCs). Each composite material was placed in a gas purification system, which was injected with a mixture of NOx and VOCs gases of known concentration. The gas concentrations at the system inlet and outlet were recorded, and the purification effect was measured using a gas analyzer. The removal rate of each material was calculated by comparing the concentration differences between the inlet and outlet gases. The experiment lasted for 2 hours to ensure that the concentrations stabilized at the end of each experimental cycle.

[0032] 2. Adsorption capacity test This test was used to evaluate the gas adsorption capacity of composite materials, primarily testing their adsorption capacity for volatile organic compounds (VOCs) and other pollutants. Each composite material sample was placed in a gas adsorption device of known volume, and a certain concentration of VOCs gas was injected into the device. The change in the material surface area during adsorption was monitored. The adsorption capacity of each material was obtained by calculating the change in gas concentration before and after adsorption. Each test used 100 ppm of VOCs gas, with an adsorption time of 2 hours, and the experiment was conducted at 25°C.

[0033] 3. Thermal stability test This test evaluates the stability of composite materials under high-temperature conditions, primarily assessing their retention of catalytic performance in high-temperature environments. Each composite material is exposed to different temperatures for varying durations. Thermal stability is evaluated by measuring changes in material weight, surface structure, and retention of catalytic performance after heating. Gas purification efficiency and adsorption capacity at high temperatures are measured and compared with results at room temperature.

[0034] 4. Cyclic stability test This test evaluates the stability and continued purification capacity of composite materials after repeated use, primarily testing their effectiveness changes during repeated gas purification processes. Each composite material is placed in a circulating gas purification system, with gas passing over the material surface for multiple cycles. After each cycle, the gas purification efficiency, adsorption capacity, and material stability are recorded. Cycling conditions include: a treatment time of 1 hour per cycle, stable gas concentration, and an ambient temperature of 25°C.

[0035] Table 1 Performance Test Results Examples and Comparative Examples Gas purification efficiency (NOx removal rate, %) Gas purification efficiency (VOCs removal rate, %) Adsorption capacity (VOCs adsorption capacity, mg / g) Thermal stability (catalytic performance retention rate, %) Cycle stability (removal rate, %) Example 1 82 80 78 80 75 Example 2 90 88 95 85 85 Example 3 85 83 85 83 80 Comparative Example 1 70 65 60 65 60 Comparative Example 2 75 70 65 70 65 Comparative Example 3 72 68 62 68 63 According to Table 1 and Figure 2As shown, Example 2 exhibits excellent gas purification efficiency, particularly in the NOx removal rate test, reaching 90%. This result demonstrates that the composite material of Example 2 has a significant purification effect when treating nitrogen oxide gas, significantly outperforming Comparative Example 1 and Comparative Example 2, whose removal rates were 70% and 75%, respectively. As NOx is one of the most common harmful gases, efficient removal is a crucial indicator for gas purification materials. The superior performance of Example 2 indicates that this composite material can effectively address high-concentration nitrogen oxide pollution, enhancing its application potential in industrial waste gas treatment.

[0036] Regarding VOCs removal rate, Example 2 achieved a removal rate of 88%, the highest among all tested samples. In comparison, Comparative Example 1 and Comparative Example 2 achieved removal rates of 65% and 70%, respectively. This result demonstrates that the composite material of Example 2 exhibits extremely high purification efficiency in removing volatile organic compounds (VOCs). VOCs pollutants are widely present in industrial emissions, vehicle exhaust, and chemical use, posing significant threats to the environment and human health. Therefore, efficient VOCs removal places extremely high demands on air purification materials. The material of Example 2 achieves excellent purification performance in this regard, proving its superiority in handling complex gas systems.

[0037] Adsorption capacity testing further validated the performance advantages of Example 2. The VOCs adsorption capacity of Example 2 was 95 mg / g, significantly higher than that of Comparative Example 1 and Comparative Example 2, which were 60 mg / g and 65 mg / g, respectively. This result indicates that the composite material of Example 2 has a stronger adsorption capacity and can effectively adsorb more VOCs molecules, which is crucial for the long-term treatment of gaseous pollutants in practical applications. Higher adsorption capacity means that the composite material can handle higher concentrations of pollutants and has a longer service life.

[0038] Regarding thermal stability, Example 2 retained 85% of its catalytic performance, while Comparative Examples 1 and 2 retained 65% and 70%, respectively. This difference indicates that the composite material of Example 2 maintains good catalytic performance even at high temperatures, and its thermal stability is superior to that of the comparative materials. High temperatures often lead to a decrease in catalyst activity or even its failure; therefore, good thermal stability is crucial for improving material lifespan and performance in high-temperature environments. The material of Example 2 demonstrates excellent performance in this regard and is suitable for treating high-temperature gaseous pollutants in industrial production processes.

[0039] Finally, the cyclic stability test showed that the removal rate of Example 2 remained stable at 85% after multiple uses, significantly higher than that of Comparative Example 1 and Comparative Example 2, which were 60% and 65%, respectively. This indicates that the composite material of Example 2 maintained high purification efficiency during repeated use, demonstrating strong anti-fouling ability and durability. Stability after multiple uses is an important indicator for evaluating the long-term feasibility of gas purification materials. The excellent performance of Example 2 in this regard makes it more reliable in practical applications.

[0040] In summary, Example 2 demonstrated the best performance in all test items, especially in gas purification efficiency, adsorption capacity, thermal stability, and cycle stability, significantly outperforming the comparative material. This indicates that the composite material of the present invention possesses excellent gas purification capabilities and long-term stability, enabling its wide application in various gas purification scenarios and demonstrating high commercial value and promising application prospects.

Claims

1. A composite material for rapidly purifying gases, characterized in that, The composite material comprises the following raw materials in parts by weight: 40-60 parts of modified metal oxide; 20-40 parts of 1,2,3,4-cyclobutanetetraol; 5-15 parts of bentonite; 3-10 parts of activated carbon; and 3-10 parts of hydrogen peroxide. The modified metal oxide is formed by introducing aminosilane, metal ions, and other functional chemical reagents to modify the surface of the metal oxide, resulting in a material with higher specific surface area, enhanced catalytic performance, and stronger gas adsorption capacity. It is widely used in the catalytic degradation, adsorption, and purification of harmful gases.

2. The composite material for rapid gas purification according to claim 1, characterized in that, The modified metal oxide comprises the following raw materials in parts by weight: 30-40 parts titanium dioxide; 20-30 parts aluminum dioxide; 10-20 parts zinc oxide; 5-15 parts iron oxide; 5-10 parts copper chloride; 5-10 parts activated carbon; 10-20 parts ethanol; 10-15 parts deionized water; and 1-5 parts 3-aminopropyltriethoxysilane.

3. The composite material for rapid gas purification according to claim 1, characterized in that, The method for preparing the modified metal oxide includes the following steps: (1) Mix titanium dioxide, aluminum dioxide, zinc oxide and ethanol, and stir until homogeneous; (2) Add 3-aminopropyltriethoxysilane and copper chloride to the above mixture, adjust the pH to 4.5-6.0, and react at 20-25°C for 1-3 hours; (3) The mixture after the reaction is washed with deionized water to remove unreacted impurities, and then dried under vacuum to constant weight; (4) The dried modified metal oxide is calcined at high temperature of 400-600°C for 2-4 hours to improve its surface activity and stability. (5) Cool the calcined modified metal oxide to room temperature to obtain the modified metal oxide.

4. The composite material for rapid gas purification according to claim 3, characterized in that, The stirring speed in step (1) is 200-400 rpm.

5. The composite material for rapidly purifying gas according to claim 3, characterized in that, The pH value of step (2) is 4.5 to 6.0, and the reaction is carried out at 20 to 25°C for 1 to 3 hours.

6. The composite material for rapidly purifying gas according to claim 3, characterized in that, The drying temperature in step (3) is 60–80°C.

7. The composite material for rapidly purifying gas according to claim 3, characterized in that, The calcination temperature in step (4) is 400-600°C, and the calcination time is 2-4 hours.

8. A method for preparing a composite material for rapid gas purification, characterized in that, The preparation method includes the following steps: S1, the modified metal oxide, 1,2,3,4-cyclobutanetetraol, bentonite and activated carbon are added to the mixing equipment and mixed evenly; S2, add hydrogen peroxide to the mixture and continue stirring; S3 involves molding and drying the uniformly mixed materials to obtain a composite material for rapid gas purification.

9. The method for preparing a composite material for rapid gas purification according to claim 8, characterized in that, The reaction conditions for step S1 are: a stirring speed of 200–400 rpm in the mixing equipment; the reaction conditions for step S2 are: a stirring temperature of 20–25°C and a stirring time of 1–3 hours; and the reaction conditions for step S3 are: a drying temperature of 60–80°C and a drying time of 4–6 hours.

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