Cyclopentanone microcapsule material and preparation method thereof

Abstract

The invention discloses a cyclopentanone microcapsule material and a preparation method thereof, and belongs to the technical field of agriculture, the cyclopentanone microcapsule material comprises the following components by weight: 12-20 parts of modified cyclopentanone, 20-35 parts of resin, 35-55 parts of gelatin, 3-7 parts of a stabilizer, 3-7 parts of a plasticizer, 3-7 parts of an opacifying agent, and 50-80 parts of water. According to the invention, the prepared microcapsule material can reduce the rapid decomposition rate of cyclopentanone by microorganisms in soil, plays a role in protecting cyclopentanone, delays the release of cyclopentanone, prolongs the action time of cyclopentanone, and further improves the action efficiency of cyclopentanone.

Description

Technical Field

[0001] The present invention belongs to the technical field of agriculture, and particularly relates to a cyclopentanone microcapsule material and a preparation method thereof. Background Art

[0002] Under the background of the accelerating global modernization process, the world's population has increased significantly. However, some countries and regions are still deeply troubled by food shortages. To effectively increase food production, scientists have developed fertilizers to help crops increase yields. However, due to the constraints of fertilizer application methods and technical conditions, the fertilizer utilization rate is low, which not only causes serious resource waste but also pollutes the environment to a certain extent, greatly limiting the popularization and application of fertilizers.

[0003] In previous studies, researchers found that the green inhibitor cyclopentanone can effectively slow down the loss of fertilizer nitrogen. However, cyclopentanone itself is an oily liquid with strong volatility and is easily decomposed by soil microorganisms after being applied to the soil. To fully exert the maximum effect of cyclopentanone and further improve its use effect, it is necessary to conduct in-depth research and development work and vigorously promote the development of inhibitor modification technology, so as to effectively slow down the environmental pollution caused by nitrogen application and provide strong support for the sustainable development of agriculture. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a cyclopentanone microcapsule material and a preparation method thereof to solve the problem of easy loss of fertilizer nitrogen at present.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention provides a cyclopentanone microcapsule material. By weight, the microcapsule material consists of 12 - 20 parts of modified cyclopentanone, 20 - 35 parts of resin, 35 - 55 parts of gelatin, 3 - 7 parts of stabilizer, 3 - 7 parts of plasticizer, 3 - 7 parts of light-shielding agent, and 50 - 80 parts of water.

[0007] Further, the stabilizer is composed of phospholipid, vitamin C, and sodium lignosulfonate, the light-shielding agent is titanium dioxide, and the plasticizer is glycerol.

[0008] Further, by weight, the microcapsule material consists of 16 parts of modified cyclopentanone, 27 parts of resin, 42 parts of gelatin, 5 parts of stabilizer, 5 parts of plasticizer, 5 parts of light-shielding agent, and 65 parts of water.

[0009] Further, it also includes a preparation method of the cyclopentanone microcapsule material, which includes the following steps:

[0010] S1. First, modify cyclopentanone;

[0011] S2. Add resin, gelatin, plasticizer, and water into a gelatinizing tank, heat and stir until completely dissolved to form a uniform glue solution;

[0012] S3. Conduct vacuum degassing on the glue solution to remove the bubbles therein;

[0013] S4. Let the degassed glue solution stand to fully discharge the bubbles while maintaining an appropriate temperature;

[0014] S5. Mix the modified cyclopentanone with a stabilizer and a light-shielding agent evenly to form a material for microcapsule;

[0015] S6. Mix the glue solution and the material evenly, then press to form a microcapsule shell, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0016] S7. Dry the pressed microcapsules and shape the microcapsule shell to remove the excess water.

[0017] Further, the modification step of the cyclopentanone is as follows:

[0018] P1. Convert the pyrolyzed biomass material into biochar under preset temperature and anoxic conditions;

[0019] P2. Modify the biochar by adding a magnetic material to prepare magnetic biochar;

[0020] P3. Prepare Fenton reagent with Fe 2+ and H 2 O 2 ;

[0021] P4. Mix the Fenton reagent and the magnetic biochar to modify the biochar;

[0022] P5. After mixing cyclopentanone with the modified biochar, obtain the modified cyclopentanone.

[0023] Further, in the step P2, the magnetic material is zero-valent iron.

[0024] Further, in the step P2, the mass ratio of the magnetic material to the biochar is 1:9.

[0025] Further, in the step P4, the mass ratio of the Fenton reagent to the magnetic biochar is 0.5:5.

[0026] Further, in the step P5, the ratio of cyclopentanone to the modified biochar is 5:1.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. In the present invention, gelatin is used as the main film-forming material, which has good biocompatibility and film-forming properties; cyclopentanone is used as the active ingredient to regulate the nitrogen transformation process in soil and fertilizers and reduce nitrogen loss; the plasticizer can increase the flexibility and plasticity of the microcapsule shell, water is used to dissolve gelatin and form a gelatin solution, the light-shielding agent can prevent the influence of light on cyclopentanone and maintain its stability, and the stabilizer can improve the stability and applicability of the microcapsules.

[0029] 2. In the present invention, resin and gelatin form a uniform gelatin solution after heating and dissolution, and a microcapsule shell with certain strength and flexibility is formed by die pressing; cyclopentanone is injected into the microcapsule shell, and through the sealing property of the microcapsule shell, cyclopentanone is protected from the influence of the external environment and at the same time its release rate in the soil is slowed down; when the microcapsule material is applied to the soil, with the change of soil humidity and the action of microorganisms, the microcapsule shell gradually degrades and releases cyclopentanone, and cyclopentanone then regulates the nitrogen transformation of fertilizers and slows down nitrogen loss.

[0030] 3. In the present invention, through the encapsulation of the microcapsule material, the release rate of cyclopentanone in the soil is controlled, its action time is extended and its action efficiency is increased, thereby improving the utilization rate of fertilizers; the microcapsule material can protect cyclopentanone from being rapidly decomposed by microorganisms in the soil, delay the release of cyclopentanone and extend its action time; and the microcapsule material has a certain soil adsorption property, which helps the uniform distribution of cyclopentanone in the soil, and brings greater economic benefits to agricultural production by improving soil properties and slowing down fertilizer volatilization.

[0031] 4. In the present invention, cyclopentanone is encapsulated in the microcapsule material and does not come into direct contact with the soil. It can precipitate at an appropriate time, regulate the nitrogen transformation process, help crops absorb nutrients at different growth stages, protect the environment and improve the fertilizer utilization rate at the same time; by controlling the release and protecting the active ingredient, the performance of cyclopentanone in the soil is effectively enhanced; based on cyclopentanone as a "green" biological inhibitor derived from plants, compared with other chemically synthesized inhibitors, it has less impact on the environment and better meets the requirements of sustainable development.

[0032] 5. For the excipients in the present invention, sodium lignosulfonate can be used as a stabilizer to change the size and morphology of the microcapsules and significantly improve the protection ability of the coating; vitamin C can extend the lifespan and activity of the microcapsules; phospholipids can enhance the stability and integration performance of the microcapsules; titanium dioxide can prevent the influence of light on cyclopentanone and maintain its stability; glycerol can increase the flexibility and plasticity of the microcapsule shell.

[0033] 6. The present invention uses biochar-assisted Fenton-like oxidation to treat cyclopentanone, which can improve its stability and effectiveness in soil. Biochar can act as a catalyst to improve the oxidation efficiency of cyclopentanone, while reducing the usage amount of chemical oxidants and the impact on the environment. By irradiating the photosensitive material (such as TiO2) on biochar with light, photo-generated electron-hole pairs are generated, and then hydroxyl radicals are produced, enhancing the oxidation ability. Biochar-assisted Fenton-like oxidation treatment can significantly improve the removal efficiency of cyclopentanone, reduce chemical oxygen demand (COD) and improve biodegradability, while reducing secondary pollution; enhance its effects of insecticidal, bactericidal and plant disease prevention in soil.

[0034] Other advantages, objectives and features of the present invention will be elaborated in the subsequent description, and to some extent are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to make the objectives, technical solutions and beneficial effects of the invention clearer, the present invention provides the following drawings for illustration:

[0036] Figure 1 It is a schematic flow chart for the preparation of the microcapsule material of the present invention;

[0037] Figure 2 It is the influence of the treatment with the new dosage form material of urea combined with CCO on the corn yield compared with other treatments in the present invention;

[0038] Figure 3 It is the influence of the treatment with the new dosage form material of urea combined with CCO on the CH 4 volatilization flux of brown soil compared with other treatments in the present invention;

[0039] Figure 4 It is the influence of the treatment with the new dosage form material of urea combined with CCO on the CH 4 cumulative emission of brown soil compared with other treatments in the present invention;

[0040] Figure 5 It is the influence of the treatment with the new dosage form material of urea combined with CCO on the CO 2 volatilization flux of brown soil compared with other treatments in the present invention;

[0041] Figure 6 It is the influence of the treatment with the new dosage form material of urea combined with CCO on the CO 2 cumulative emission of brown soil compared with other treatments in the present invention;

[0042] Figure 7Dynamic changes in the abundance of the mrcA(A) gene in soil during the treatment of the new CCO dosage form material in the present invention compared with other treatments;

[0043] Figure 8 Dynamic changes in the abundance of the pmoA(B) gene in soil during the treatment of the new CCO dosage form material in the present invention compared with other treatments. Detailed implementation manners

[0044] As Figure 1 shown, the present invention provides a preparation method of a cyclopentanone microcapsule material.

[0045] Example 1

[0046] S1. Pyrolyze wood chips at 350 °C for 15 min to obtain biochar; modify the biochar by adding zero-valent iron to prepare magnetic biochar; prepare Fenton's reagent through Fe 2+ and H 2 O 2 ; mix Fenton's reagent with magnetic biochar to modify the biochar; after mixing cyclopentanone with the modified biochar, obtain modified cyclopentanone;

[0047] S2. Add 27 parts of resin, 45 parts of gelatin, 5 parts of glycerol, and 65 parts of water into a gelatinizing tank, heat and stir until completely dissolved to form a uniform glue solution;

[0048] S3. Degas the glue solution under vacuum to remove the bubbles therein;

[0049] S4. Let the degassed glue solution stand to fully discharge the bubbles while maintaining room temperature;

[0050] S5. Mix 16 parts of modified cyclopentanone with 5 parts of a stabilizer composed of phospholipids, vitamin C, and sodium lignosulfonate, and 5 parts of titanium dioxide uniformly to form the material of the microcapsule;

[0051] S6. Mix the glue solution and the material uniformly, then form a microcapsule shell by machine pressing, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0052] S7. Dry the pressed microcapsules and shape the microcapsule shell to remove the excess moisture.

[0053] Under high temperature and anoxic conditions, wood chips are converted into biochar, which has a high specific surface area and a porous structure and is suitable as a catalyst carrier; after modifying the biochar by adding zero-valent iron, its adsorption and catalytic performance are enhanced, and the magnetic biochar can be more easily separated from the treated solution; Fe 2+ and H 2 O 2The prepared Fenton reagent reacts to generate hydroxyl radicals, which have strong oxidation ability and can mineralize cyclopentanone. The biochar-assisted Fenton-like oxidation technology can effectively modify cyclopentanone and enhance its effects of insecticidal, bactericidal and plant disease prevention in soil.

[0054] Example 2

[0055] S1. Pyrolyze wood chips at 350 °C for 15 min to obtain biochar; modify the biochar by adding zero-valent iron to prepare magnetic biochar; prepare the Fenton reagent with Fe 2+ and H 2 O 2 ; mix the Fenton reagent with the magnetic biochar to modify the biochar; after mixing cyclopentanone with the modified biochar, obtain modified cyclopentanone;

[0056] S2. Add 21 parts of resin, 55 parts of gelatin, 7 parts of glycerol, and 80 parts of water to a gelatinizing tank, heat and stir until completely dissolved to form a uniform glue solution;

[0057] S3. Degas the glue solution under vacuum to remove the bubbles therein;

[0058] S4. Let the degassed glue solution stand to fully discharge the bubbles while maintaining room temperature;

[0059] S5. Mix 12 parts of modified cyclopentanone with 7 parts of a stabilizer composed of phospholipids, vitamin C, and sodium lignosulfonate, and 3 parts of titanium dioxide to form the material of the microcapsule;

[0060] S6. Mix the glue solution and the material evenly, then form a microcapsule shell by machine pressing, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0061] S7. Dry the pressed microcapsules and shape the microcapsule shell to remove the excess moisture.

[0062] To verify the superiority of the present invention, Comparative Examples 1-2 are set here:

[0063] Comparative Example 1

[0064] S1. Add 27 parts of resin, 45 parts of gelatin, 5 parts of glycerol, and 65 parts of water to a gelatinizing tank, heat and stir until completely dissolved to form a uniform glue solution;

[0065] S2. Degas the glue solution under vacuum to remove the bubbles therein;

[0066] S3. Let the degassed glue solution stand to fully discharge the bubbles while maintaining room temperature;

[0067] S4. Mix 16 parts of cyclopentanone with 5 parts of phospholipid, vitamin C, sodium lignosulfonate as stabilizer, and 5 parts of titanium dioxide evenly to form the material of microcapsule material;

[0068] S5. Mix the glue solution with the material evenly, then form a microcapsule shell by machine pressing, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0069] S6. Dry the pressed microcapsules and shape the microcapsule shell to remove excess moisture.

[0070] The difference between Comparative Example 1 and Example 1 is that the cyclopentanone for preparing the microcapsule shell is not modified.

[0071] Comparative Example 2

[0072] S1. Pyrolyze wood chips at 350 °C for 15 min to obtain biochar; modify the biochar by adding zero-valent iron to prepare magnetic biochar; prepare Fenton reagent through Fe 2+ and H 2 O 2 ; Mix the Fenton reagent with the magnetic biochar to modify the biochar; mix cyclopentanone with the modified biochar to obtain modified cyclopentanone;

[0073] S2. Add 27 parts of resin and 65 parts of water to the glue-making tank, heat and stir until completely dissolved to form a uniform glue solution;

[0074] S3. Degas the glue solution under vacuum to remove the bubbles therein;

[0075] S4. Let the degassed glue solution stand to fully discharge the bubbles while maintaining room temperature;

[0076] S5. Use 16 parts of modified cyclopentanone as the material of the microcapsule material;

[0077] S6. Mix the glue solution with the material evenly, then form a microcapsule shell by machine pressing, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0078] S7. Dry the pressed microcapsules and shape the microcapsule shell to remove excess moisture.

[0079] The difference between Comparative Example 1 and Example 1 is that stabilizer, light-shielding agent, glycerol, and gelatin are not added.

[0080] Comparative Example 3

[0081] S1. Pyrolyze wood chips at 350 °C for 15 min to obtain biochar; modify the biochar by adding zero-valent iron to prepare magnetic biochar; prepare Fenton reagent through Fe 2+ and H 2 O 2Prepare Fenton reagent; mix the Fenton reagent with magnetic biochar to modify the biochar; mix cyclopentanone with the modified biochar to obtain modified cyclopentanone;

[0082] S2. Mix 27 parts of resin, 45 parts of gelatin, 5 parts of glycerol, 65 parts of water, 16 parts of modified cyclopentanone, 5 parts of phospholipid, stabilizer composed of vitamin C and sodium lignosulfonate, and 5 parts of titanium dioxide evenly to obtain a mixture;

[0083] S3. Form a microcapsule shell by pressing the mixture with a machine, inject cyclopentanone into the microcapsule shell, and then press and seal;

[0084] S7. Dry the pressed microcapsules and shape the microcapsule shell to remove excess moisture.

[0085] The difference between Comparative Example 1 and Example 1 is that all the materials were directly mixed without following the steps, and the reactions in each step were not fully carried out.

[0086] Test setup:

[0087] Select 8 experimental farmlands. The basic physical and chemical properties of the soil are shown in Table 1. The size of each farmland is 2.4m * 3m. The tested nitrogen fertilizer is urea (N content: 46%), the phosphate fertilizer is triple superphosphate (P2O5 content: 46%), and the potassium fertilizer is potassium chloride (K2O content: 60%). The application rate of urea is 200 kg N·hm -2 and the application rates of phosphorus and potassium fertilizers are 69 kg P 2 O 5 ·hm -2 and 70 kg K 2 O·hm -2 . A total of 8 treatment areas are set as follows:

[0088] ① CK: No fertilizer application;

[0089] ② Urea: Conventional fertilization;

[0090] ③ Cyclopentanone: Conventional fertilization + treatment with cyclopentanone at 0.5% of urea content;

[0091] ④ Example 1 area: Conventional fertilization + treatment with cyclopentanone microcapsule material at 0.5% of urea content;

[0092] ⑤ Example 2 area: Conventional fertilization + treatment with cyclopentanone microcapsule material at 0.5% of urea content;

[0093] ⑥ Comparative Example 1 area: Conventional fertilization + treatment with cyclopentanone microcapsule material at 0.5% of urea content;

[0094] ⑦ Comparative Example 2 area: Conventional fertilization + treatment with cyclopentanone microcapsule material at 0.5% of urea content;

[0095] ⑧Control Group 3: Conventional fertilization + treatment with cyclopentanone microcapsule material with 0.5% urea content.

[0096] Experimental verification:

[0097] Sowing and fertilization were carried out on May 1, 2024, using corn as the test crop. The total length of the corn ridges and furrows was 0.6 meters, the spacing between corn plants was 0.25 meters, 4 rows of corn were planted in each plot, and a total of 80 corn plants were planted. The basic physical and chemical properties of the soil are shown in Table 1.

[0098] Table 1 Basic physical and chemical properties of the soil

[0099]

[0100] Except for the CK plot, the other 7 treatment plots were fertilized by strip application. Then, except for the conventional fertilization plot, the corresponding cyclopentanone and cyclopentanone microcapsule material treatments were added to the other treatment plots.

[0101] Cover the soil in the 8 treatment plots to bury the fertilizer, and then use a seeder for sowing to avoid burning the seedlings. Keep the distance between the seeds and the fertilizer at 5 - 8 cm. After sowing, cover the seeds with soil to complete the fertilization and sowing work. All subsequent field management was carried out according to the local farmers' conventional farming methods.

[0102] Experimental results:

[0103] Through experimental verification, it was found that compared with Plot ②, the cumulative volatilization of NH 3 in Plots ③ - ⑤ decreased. However, based on Plot ③, after the treatment with cyclopentanone microcapsule material, the reduction in NH 3 in Plots ④ - ⑤ was as high as 42 - 48%;

[0104] In Plots ⑥ - ⑧, due to the change in the ratio, raw materials or methods during the preparation of the microcapsule material, although it had an inhibitory effect on NH 3 , it was not obvious compared with the previous treatment in Plot ③. Instead, in Plot ⑥, since cyclopentanone was coated with an inappropriate microcapsule material and could not be effectively decomposed in the soil, it instead affected the inhibitory effect of cyclopentanone. In addition, for the treatments in Plots ⑦ and ⑧, the cumulative volatilization of NH 3 was about 9.5%, and for the treatment in Plot ⑥, the cumulative volatilization of NH 3 was about 7%, which was not much different from the treatment plot without coating cyclopentanone with microcapsule material.

[0105] Comparing the effects of Plots ① - ④ on corn yield, as Figure 2 shown, applying cyclopentanone in combination with urea increased the corn yield compared with applying urea alone or not applying urea, and applying an appropriate cyclopentanone microcapsule material treatment further increased the corn yield.

[0106] AsFigure 3 , Figure 4 , Figure 5 , Figure 6 As shown in Figure 6 , compared with areas ①, ②, and ③, in area ④, the entire process of regulating nitrogen transformation is achieved by coating cyclopentanone with microcapsule materials, reducing the influence of the external environment on it, and significantly improving the soil's absorption of CH 4 , while also reducing the emission flux and cumulative emissions of CO 2 from the brown soil.

[0107] As Figure 7 , Figure 8 shown, compared with areas ①, ②, and ③, the influence of area ④ on the abundances of CH 4 emission functional genes (mcrA, pmoA) in the 0 - 20 cm brown soil reveals the microbial regulation effect and mechanism of the targeted positioning of cyclopentanone microcapsules.

[0108] According to the global warming potential (GWP), greenhouse gas emission intensity (GHGI), and maize yield, analyze the effects of the cyclopentanone microcapsule material treatment on these three aspects.

[0109] As shown in Table 2, compared with the application of urea alone, the cyclopentanone microcapsule material treatment significantly reduces the emission fluxes and cumulative emissions of N 2 O, CH 4 , and CO 2 . At the same time, compared with the urea treatment and the cyclopentanone treatment, the cyclopentanone microcapsule material treatment also significantly increases the maize yield and reduces the GWP and GHGI. Through comprehensive comparison, the cyclopentanone microcapsule material treatment has a better effect on reducing greenhouse gas emissions from the brown soil and increasing maize yield, and can be selected according to the specific environmental conditions.

[0110] Table 2 Effects of different materials

[0111]

[0112] In summary, the cyclopentanone microcapsule material treatment can significantly reduce ammonia volatilization in the soil compared with the application of traditional nitrogen fertilizer synergists, and its effect of inhibiting fertilizer volatilization can also be significantly improved compared with the application of cyclopentanone alone. The preparation method of the microcapsule material of the present invention is simple, the material is environmentally friendly, and in combination with cyclopentanone, it can promote the research and development of green, new, and highly efficient nitrogen fertilizer products, which has important practical significance for the development of modern agriculture.

[0113] Finally, it should be noted that the above - mentioned preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above - mentioned preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A cyclopentanone microcapsule material, characterized in that: In terms of weight, the microcapsule material comprises 12-20 parts of modified cyclopentanone, 20-35 parts of resin, 35-55 parts of gelatin, 3-7 parts of stabilizer, 3-7 parts of plasticizer, 3-7 parts of sunscreen and 50-80 parts of water.

2. A cyclopentanone microcapsule material according to claim 1, characterized in that: The stabilizer is composed of phospholipid, vitamin C and sodium lignin sulfonate, the sunscreen is titanium dioxide, and the plasticizer is glycerol.

3. A cyclopentanone microcapsule material according to claim 1, characterized in that: In terms of weight, the microcapsule material comprises 16 parts of modified cyclopentanone, 27 parts of resin, 42 parts of gelatin, 5 parts of stabilizer, 5 parts of plasticizer, 5 parts of sunscreen and 65 parts of water.

4. A cyclopentanone microcapsule material according to any one of claims 1 to 3, further comprising a method for preparing the cyclopentanone microcapsule material, characterized in that: The following steps are included: S1, first modifying cyclopentanone; S2, add resin, gelatin, plasticizer and water into the glue tank, heat and stir until completely dissolved to form a uniform glue solution; S3, vacuum degassing the glue to remove bubbles; S4, let the degassed glue stand to allow the bubbles to be fully discharged while maintaining a suitable temperature; S5, uniformly mixing the modified cyclopentanone, the stabilizer and the sunscreen to form a material of microcapsule material; S6, mixing the glue and the material evenly, and then pressing to form a microcapsule shell, injecting cyclopentanone into the microcapsule shell, and then pressing and sealing; S7, drying the pressed microcapsules and shaping the microcapsule shells to remove excess water.

5. The method for preparing a cyclopentanone microcapsule material according to claim 4, characterized in that: The modification steps of the cyclopentanone are: P1, converting pyrolyzed biomass materials into biochar under preset temperature and anoxic conditions; P2, modifying biochar by adding magnetic materials to prepare magnetic biochar; P3, through Fe 2+ and H2O2 to make Fenton's reagent; P4, mixing Fenton's reagent with magnetic biochar to modify the biochar; P5. After mixing cyclopentanone with modified biochar, modified cyclopentanone is obtained.

6. The method for preparing a cyclopentanone microcapsule material according to claim 5, characterized in that: In the step P2, the magnetic material is zero-valent iron.

7. The method for preparing a cyclopentanone microcapsule material according to claim 5, characterized in that: In the step P2, the mass ratio of the magnetic material to the biochar is 1:

9.

8. The method for preparing a cyclopentanone microcapsule material according to claim 5, characterized in that: In the step P4, the mass ratio of Fenton's reagent to magnetic biochar is 0.5:

5.

9. The method for preparing a cyclopentanone microcapsule material according to claim 5, characterized in that: In step P5, the ratio of cyclopentanone to modified biochar is 5:1.

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