Organic silicon foaming material for catalytic carrier and preparation method thereof

Abstract

The invention discloses a preparation method of an organic silicon foaming material for a catalytic carrier and application of the organic silicon foaming material in photocatalytic carbon dioxide reduction reaction. The preparation raw materials comprise vinyl silicone oil, hydroxyl silicone oil, hydrogen-containing silicone oil, a catalyst, an inhibitor, a reinforcing filler and the like, in the preparation process, catalyst powder and an organic silicon rubber material are mixed and then subjected to in-situ foaming curing, and further grinding is performed to obtain the novel organic silicon foam catalyst. The catalyst has more pore channels and higher specific surface area, and can be applied to photocatalytic carbon dioxide reduction reaction. Compared with other porous materials for catalytic carriers, the organic silicon foam material has the advantages of simple preparation, low cost, good stability and the like, and is expected to be applied to the field of catalysis on a large scale in the future.

Description

Technical Field

[0001] The present invention provides a method for preparing a porous organosilicon foam catalytic carrier. After the catalyst is combined with the carrier, it is beneficial to the adsorption and desorption of materials and has more reaction sites to improve the catalytic reaction efficiency. The invention belongs to the technical field of catalytic materials. Background Art

[0002] Porous polymer materials are lightweight, flexible porous materials. The widely distributed pore structure can provide a large amount of loading surface area for the catalyst, and have good adsorption and desorption performance and mechanical properties. Therefore, they are widely used as catalyst carriers. In recent years, compounds with coordination compounds, organic-inorganic hybrid materials, and metal organic polymers as skeletons have appeared, such as MOFs, COFs, POPs, etc. They have large specific surface areas and strong adjustability. They often achieve excellent results in catalytic reactions, but they are generally complicated to prepare, costly, and their stability needs to be improved.

[0003] Emerging photocatalytic technology can reduce carbon dioxide to produce methanol, carbon monoxide and other value-added chemicals. However, the development of catalytic materials for photocatalytic reactions is limited. The catalytic carriers used for the reaction are expensive, complex to synthesize, have low specific surface area and poor stability, which restricts the development of photocatalytic carbon dioxide reduction technology. The organosilicon foam catalytic carrier provided by the present invention has the advantages of strong adjustability, simple synthesis, good stability, etc., and can be applied to the catalytic reaction to promote the further development of photocatalytic technology. Summary of the invention

[0004] In view of the shortcomings of the prior art, the main purpose of the present invention is to provide a catalytic carrier material, a catalytic material and a preparation method and application thereof. The catalytic carrier material has the advantages of high stability, high specific surface area, simple preparation and low cost. The catalytic material prepared using the catalytic carrier can significantly improve the catalytic activity.

[0005] The first aspect of the present invention provides an organic silicon foam catalyst carrier, which is prepared by mixing and foaming two components A and B, wherein the mass ratio of components A to B during mixing is 1:1; and The component A comprises raw materials and proportions: 10-60 parts of vinyl silicone oil; 0.1-5 parts of methyl vinyl silicone rubber; 5-30 parts of high-viscosity hydroxy silicone oil; 0.5-10 parts of low-viscosity hydroxy silicone oil; 5-30 parts of reinforcing filler; and the concentration of platinum catalyst in the total mass of all rubber materials is 1-30ppm.

[0006] The B component comprises raw materials and proportions: 10-60 parts of vinyl silicone oil; 5-15 parts of high-viscosity hydroxy silicone oil; 1-5 parts of hydrogen-containing silicone oil; 0.1-5 parts of MQ resin; 5-20 parts of reinforcing filler; and the concentration of acetylene alcohol inhibitor in the total mass of all rubber materials is 1-30ppm.

[0007] Further preferably, the component A comprises raw materials and proportions: 20-30 parts of vinyl silicone oil; 1-3 parts of methyl vinyl silicone rubber; 10-20 parts of high viscosity hydroxy silicone oil; 1-5 parts of low viscosity hydroxy silicone oil; 10-20 parts of reinforcing filler; and the concentration of platinum catalyst in the total mass of all rubber materials is 5-20ppm.

[0008] The B component comprises raw materials and proportions: 20-30 parts of vinyl silicone oil; 10-20 parts of high-viscosity hydroxy silicone oil; 1-5 parts of hydrogen-containing silicone oil; 0.5-2 parts of MQ resin; 10-20 parts of reinforcing filler; and the concentration of acetylene alcohol inhibitor in the total mass of all rubber materials is 5-20ppm.

[0009] Preferably, the viscosity of the vinyl silicone oil is vinyl-terminated silicone oil, with a viscosity of 50,000-600,000 and a vinyl content of 0.01%-5%. More preferably, the viscosity is 50,000-200,000.

[0010] Preferably, the methyl vinyl silicone rubber is 110 rubber, with a viscosity of 500,000-800,000 and a vinyl content of 0.01%-6%.

[0011] Preferably, the high-viscosity hydroxy silicone oil is 107 glue, with a viscosity of 50,000-500,000 and a hydroxyl content of 0.001%-5%. More preferably, the viscosity is 200,000-500,000.

[0012] Preferably, the low viscosity hydroxy silicone oil has a viscosity of 10-5000 cps and a hydroxy content of 0.5%-10%. Further preferably, the hydroxy silicone oil has a viscosity of 10-1000 cps and a hydroxy content of 1%-10%.

[0013] Preferably, the hydrogen-containing silicone oil is end-side hydrogen-containing silicone oil with a viscosity of 10-5000 cps and an active hydrogen mass fraction of 0.1-2%.

[0014] Preferably, the catalyst is selected from one or more of an alcohol solution of chloroplatinic acid, platinum coordinated with tetrahydrofuran, and platinum coordinated with divinyltetramethylsiloxane.

[0015] Preferably, the inhibitor is selected from one or more of 3-methyl-1-butyn-3-ol, 1-ethynylcyclohexanol, 3-phenyl-1-butyn-3-ol, 3-propyl-1-butyn-3-ol and 3-octyl-1-butyn-3-ol.

[0016] Preferably, the organic silicon foam catalyst carrier and reinforcing filler include one or two of fumed silica and silicon powder, with a particle size of 1-100 microns and a specific surface area of ​​100-500 m 2 / g.

[0017] The second aspect of the present invention provides a method for preparing a catalyst carrier. The preparation of the organic silicon foam catalyst carrier comprises the following steps: (1) Prepare rubber materials A and B according to the formula, and mix the materials of components A and B into a viscous paste without obvious agglomeration. Then grind the rubber materials by hand or use a three-roll mill to make them fully fine; (2) Add rubber materials A and B into the container, stir quickly for 0.5-5 minutes to fully mix rubber materials A and B. You can use a homogenizer or stir manually, and then let it stand at 100-200℃ for 5-30 minutes to solidify and foam to form pores; (3) Grinding the blocky organic silicon porous foam material obtained in step (2) into powder to obtain an organic silicon foam catalyst carrier.

[0018] The third aspect of the present invention provides a method for preparing a catalytic material. The catalytic material includes a catalyst and a silicone foam catalyst carrier. In the above-mentioned catalytic material, the catalyst content can be adjusted according to actual needs, and the adjustment of the catalyst is a common skill mastered by those skilled in the art. Usually, when the above-mentioned catalytic material is used as a catalyst for the photocatalytic reduction reaction of CO2, there are many types of catalysts. This application only takes carbon nitride as an example to reflect the superiority of the catalytic carrier material. Its preparation method is well known to those skilled in the art, so the preparation method of carbon nitride will not be repeated. Some common catalyst loading methods are listed: (1) During the process of preparing the catalytic carrier, a certain amount of catalyst powder can be added to the rubber material A or rubber material B, or added to rubber materials A and B at the same time. Other preparation methods are the same as the preparation method of the organosilicon foam carrier, so that the catalyst is loaded in situ; Or, (2) the catalyst and the prepared organosilicon foam carrier are loaded by ultrasonic oscillation; the frequency is controlled at 40 kHz to 60 kHz; the power is controlled at 80 W to 150 W.

[0019] Or, (3) the catalyst powder is mixed and ground with the prepared organosilicon foam carrier, and then the catalyst powder is mixed and ground with the prepared organosilicon foam carrier by electrostatic self-assembly method. Load; grind to D50 of 50nm-2μm.

[0020] or, (4) other reasonable methods of combining the catalyst and the support.

[0021] The method for combining the catalyst with the organosilicon foam can be selected from the above-mentioned loading methods or the technicians in this field can prepare new catalytic materials using the organosilicon foam catalytic carrier in combination with actual conditions. It should be clear that the catalyst loading method is a relatively basic skill for technicians in this field. No matter how the new catalytic material is prepared using the organosilicon foam catalytic carrier in the present invention, it is within the protection scope of the present invention.

[0022] The fourth aspect of the present invention provides an application of the above-mentioned catalytic carrier material in the photocatalytic reduction of carbon dioxide. Under appropriate photocatalytic conditions, CO2 can be converted into value-added chemicals such as CO, CH4, CH3OH, etc. using a photocatalyst. The carbon nitride (CN) photocatalyst used in the present invention to verify the use effect of the organosilicon foam catalytic carrier is one of the most studied catalysts in the field of photocatalysis and is generally considered by researchers to have good development prospects. The catalyst and the organosilicon foam catalytic carrier can be combined to form a new catalytic material. The combination method is: during the preparation of the organosilicon foam catalytic carrier, an appropriate amount of CN powder is added to the rubber B, and the other steps remain unchanged.

[0023] The application conditions of the above-mentioned catalytic material in the photocatalytic reduction of carbon dioxide are as follows: in a reactor with an opening at the top made of quartz glass, an appropriate amount of catalytic material is added, 300W xenon lamp is used for illumination, CO2 gas (99.999% purity) and H2O are introduced into the air inlet, the air outlet is connected to the gas chromatograph, and the CO2 reduction product is detected online by FID. In order to reflect the CO2 conversion efficiency of the catalytic material more concisely and clearly, only products with larger content such as CO and CH4 are listed in this application, and other trace products such as H2 and O2 are no longer counted.

[0024] Compared with the prior art, the catalytic carrier material, catalytic material and preparation method and application thereof provided by the present invention have the following advantages: 1. The catalytic carrier material provided by the present invention utilizes vinyl silicone oil, hydroxy silicone oil, hydrogen-containing silicone oil and other chemicals with a wide range of sources on the market as raw materials for constructing the material skeleton, with mild preparation conditions and a simple and safe process.

[0025] 2. In the method for preparing the catalytic carrier material of the present invention, hydrogen-containing silicone oil and vinyl silicone oil are used to form a cross-linked network by silylation polymerization. The hydrogen-containing silicone oil and silanol polycondensation reaction produces hydrogen to form a large number of holes and also constitute a part of the cross-linked network. The molecular chains are bonded by silicon-oxygen-silicon bonds. In addition, methyl silicone rubber and MQ resin can promote the formation of the cross-linked network and adjust the rigidity of the material. Therefore, the organosilicon foam catalytic carrier has a higher specific surface area and an easily adjustable pore structure, and has good stability and anti-aging properties. It can effectively solve the controllability and application stability of existing carrier materials. 3. In the method for preparing the catalytic material used in the present invention, no complicated combining method is required. It is only necessary to mix the catalyst powder with the A and B glue raw materials for preparing the catalytic carrier, so that the catalyst powder is in-situ and evenly loaded on the catalytic carrier. The process is simple and controllable. The rich specific surface area provides a large number of catalytic sites, which is conducive to improving the catalytic effect. It can effectively solve the problem of low catalytic efficiency caused by the low specific surface area of ​​the existing catalytic carrier. At the same time, in photocatalytic applications, the rich pore structure of the porous material is conducive to the entry of light and its multiple refraction. It can effectively solve the problem of weak light absorption caused by the structure of the catalytic material in the field of photocatalysis.

[0026] Silicone foam is a high-area porous material that can form a dense and stable cross-linked network through the addition reaction of vinyl silicone oil and hydrogenated silicone oil (silylation), and the reaction of low-viscosity hydroxyl silicone oil and hydrogenated silicone oil (dehydrogenation reaction). When the cross-linked network is formed, gas is generated to form a porous structure. The content of low-viscosity hydroxyl silicone oil and hydrogenated silicone oil can be controlled to adjust the pore structure and make the silicone foam material flexible and adjustable. Therefore, compared with other porous catalytic materials, silicone foam catalytic carriers have the advantages of strong adjustability, simple synthesis, good stability, etc., and the raw materials used in silicone foam materials have become bulk chemicals, with low prices and wide sources, and are expected to be synthesized and applied in large quantities. DETAILED DESCRIPTION

[0027] In order to further clearly illustrate the preparation and advantages of the organic silicon foam catalyst carrier provided by the present invention, the technical scheme of the present application will be clearly and completely described through some specific embodiments below, but it is not limited to the following embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] The present application embodiment provides a high specific surface area and high stability organic silicon foam catalyst carrier, comprising the following steps: (1) Preparation of two-component rubber Prepare component A: by mass, add 20-30 parts of vinyl silicone oil, 1-3 parts of methyl vinyl silicone rubber, 10-20 parts of high viscosity hydroxy silicone oil, 1-5 parts of low viscosity hydroxy silicone oil, 0.1-1 part of platinum catalyst, and 10-20 parts of reinforcing filler. Mix thoroughly to form a viscous paste-like rubber material without obvious agglomeration. Then grind it manually or use a three-roll mill to grind the rubber material to make it fully fine; Prepare component B: by mass, 20-30 parts of vinyl silicone oil; 10-20 parts of high viscosity hydroxy silicone oil; 1-5 parts of hydrogen silicone oil; 0.01-1 parts of acetylene alcohol inhibitor; 0.5-2 parts of MQ resin; 10-20 parts of reinforcing filler. Mix and stir thoroughly to form a viscous paste-like rubber material without obvious agglomeration. Then grind it manually or use a three-roll mill to grind the rubber material to make it fully fine; (2) Add equal amounts of A and B rubber materials, stir quickly for 0.5-5 minutes to fully mix A and B rubber materials. You can use a homogenizer or stir manually, and then let it stand at 60-200℃ for 5-30 minutes to allow it to solidify, foam and form pores; (3) Grinding the blocky organic silicon porous foam material obtained in step (2) into powder to obtain an organic silicon foam catalyst carrier.

[0029] In the embodiment of the present application, if the catalyst is loaded, the catalyst powder is added to any component A or B or added simultaneously, and the preparation steps are the same as above. The catalyst uses a carbon nitride (CN) photocatalyst, which is widely used in photocatalytic carbon dioxide reduction reaction, and the preparation method is well known to relevant technicians. The CN catalyst involved in the present application is obtained by grinding after calcining melamine (Sinopharm reagent) at 550°C in a muffle furnace.

[0030] The specific surface area and pore volume of the materials in the embodiments of the present invention and the comparative examples were tested by low-temperature nitrogen adsorption method. Before the test, the organic silicon foam carrier was vacuum degassed at 200°C for 6 hours, and the N2 adsorption-desorption curve of the sample was calculated by BET method to obtain the specific surface area S BET , micropore volume V mic and micropore surface area S mic , BJH method was used to characterize the pore size distribution of samples.

[0031] The following is a detailed description of the preparation method and application of an organic silicon foam catalyst carrier provided by the present application in combination with examples and comparative examples. Unless otherwise specified, the raw materials in the examples are all produced by the company or commercially available.

[0032] Example 1: 20 parts of 60000cps vinyl silicone oil, 1 part of methyl vinyl silicone rubber (110-3 vinyl content 0.23wt%), 10 parts of 200000cps hydroxy silicone oil, 2 parts of low viscosity hydroxy silicone oil (viscosity 200cps, hydroxyl content 5%), 15 parts of fumed silica (specific surface area 380 m 2 / g), platinum catalyst concentration of 5ppm, and fully stirred to mix into a viscous paste-like rubber material, and then ground with a three-roller mill to fully grind the rubber material to obtain A rubber; 20 parts of 60000cps vinyl silicone oil, 10 parts of 200000cps hydroxy silicone oil, 1 part of hydrogen silicone oil (viscosity 120cps, hydrogen content 1.5%), 15 parts of fumed silica (specific surface area 380 m 2 / g), the inhibitor concentration is 3ppm, and the mixture is stirred and mixed to form a viscous paste-like rubber material, and then ground with a three-roller mill to make the rubber material fully fine to obtain B rubber; Mix the A and B glues quickly, let stand at 100°C for 30 minutes, take out and grind into powder to obtain the organosilicon foam catalyst carrier.

[0033] Example 2: Example 2 differs from Example 1 only in that the amount of hydrogenated silicone oil in glue B is changed from 1 part to 2 parts.

[0034] Example 3: Example 3 is different from Example 1 only in that the amount of hydrogenated silicone oil in glue B is changed from 1 part to 3 parts.

[0035] Example 4: Example 4 is different from Example 1 only in that the hydrogenated silicone oil in glue B is changed from 1 part to 5 parts.

[0036] Example 5: Example 5 differs from Example 1 only in that the amount of hydrogenated silicone oil in glue B is changed from 1 part to 8 parts.

[0037] Comparative Example 1: The only difference between Comparative Example 1 and Example 1 is that the hydrogenated silicone oil in glue B is changed from 1 part to 0 part.

[0038] Example 6: The only difference between Example 6 and Example 1 is that the low-viscosity hydroxy silicone oil in glue A is changed from 2 parts to 1 part.

[0039] Example 7: Example 7 is different from Example 1 only in that the low-viscosity hydroxy silicone oil in glue A is changed from 2 parts to 3 parts.

[0040] Example 8: Example 8 is different from Example 1 only in that the low-viscosity hydroxy silicone oil in glue A is changed from 2 parts to 5 parts.

[0041] Comparative Example 2: The only difference between Comparative Example 2 and Example 1 is that the low-viscosity hydroxy silicone oil in glue A is changed from 2 parts to 0 parts.

[0042] Example 9: Example 9 is different from Example 3 only in that 20 parts of 60,000 cps vinyl silicone oil are replaced by 30 parts of 100,000 cps vinyl silicone oil, and 10 parts of 200,000 cps hydroxy silicone oil are increased to 20 parts.

[0043] Table 1 shows the specific surface area (SBET) and average pore size (Dave) of the carrier materials prepared in Examples 1-9 and Comparative Examples 1-2. The micropore specific surface area (S mic ) and pore volume (V mic ) and the total pore volume (Vtota l).

[0044] Table 1 Catalytic carrier properties of examples and comparative examples Implementation <![CDATA[Specific surface area S BET , m 2 / g]]> <![CDATA[Aperture D ave , nm]]> <![CDATA[Total pore volume V total , cm 3 / g]]> Example 1 468.5 18.6 0.28 Example 2 592.8 23.8 0.32 Example 3 938.3 43.2 0.57 Example 4 719.6 37.5 0.51 Example 5 732.1 36.8 0.53 Example 6 212.7 11.2 0.12 Example 7 532.6 21.3 0.31 Example 8 496.2 19.6 0.27 Example 9 472.3 18.1 0.29 Comparative Example 1 / / / Comparative Example 2 36.2 3.7 0.08 Example 10: A series of catalytic materials were prepared in Example 10. 0, 0.05, 0.1, 0.5, 1, and 5 parts of carbon nitride (CN) powder were directly added to the rubber material A by mass, and the other preparation methods were the same as in Example 3. The new catalytic materials were used as photocatalytic CO2 reduction reaction catalysts, marked as CN0, CN0.05, CN0.1, CN0.5, CN1, and CN5.

[0045] Table 2 Properties of catalytic materials prepared in Examples and Comparative Examples Catalytic materials <![CDATA[Specific surface area S BET , m 2 / g]]> <![CDATA[Aperture D ave ,nm]]> <![CDATA[Total pore volume V total , cm 3 / g]]> CN-0 938.3 43.2 0.57 CN-0.05 815.2 41.6 0.51 CN-0.1 762.3 35.1 0.48 CN-0.5 713.1 29.7 0.46 CN-1 709.5 23.5 0.43 CN-5 635.2 21.3 0.37 The catalytic materials CN-0, CN-0.05, CN-0.1, CN-0.5, CN-1, and CN-5 prepared in Example 10 were used for photocatalytic carbon dioxide reduction reaction. The reaction conditions were as follows: in a reactor with a quartz glass opening at the upper end, 2 g of catalytic material was added to 80 ml of aqueous solution and stirred continuously, 300 W xenon lamp was used for illumination, CO2 gas (99.999% purity) was introduced into the air inlet, and the air outlet was connected to the gas chromatograph. The reaction products were detected online by gas chromatography (Agilent, WH-5B chromatographic column, FID detector), and the CO2 reduction reaction product generation rate can reflect the efficiency of the catalytic reaction. In order to reflect the CO2 conversion efficiency of the catalytic material more concisely and clearly, only the products with larger contents, such as CH3OH and CO, are cited in this application, and other trace products such as CH4, H2, and O2 are no longer counted.

[0046] Table 3 Reaction performance of catalysts prepared in Examples and Comparative Examples Catalyst No. <![CDATA[CH3OH(µmol / g)]]> CO (µmol / g) C conversion rate (µmol / g) CN-0 0 0 0 CN-0.05 253.68 35.62 289.30 CN-0.1 589.25 86.21 675.46 CN-0.5 2136.58 216.53 2353.11 CN-1 1322.65 125.67 1448.32 CN-5 716.23 58.27 774.5 CN 93.72 32.57 126.29 From the data in the table, we can see that the organic silicon foam catalyst carrier has a high specific surface area and rich pore capacity, and is suitable for use as a catalyst carrier. The hydroxy silicone oil content can be adjusted to control its porous structure and adjust the specific surface area. Compared with using CN alone, loading CN on the organic silicon foam catalyst carrier can significantly improve its catalytic efficiency and save the amount of catalyst.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An organosilicon foam catalyst carrier, characterized in that: The raw materials include two components, A and B, and the mass ratio of the components A to B is 1:1; And the component A comprises: 10-60 parts of vinyl silicone oil; 0.1-5 parts of methyl vinyl silicone rubber; 5-30 parts of high viscosity hydroxy silicone oil; 0.5-10 parts of low viscosity hydroxy silicone oil; 5-30 parts of reinforcing filler; the concentration of platinum catalyst in the total mass of all rubber materials is 1-30ppm; The B component comprises: 10-60 parts of vinyl silicone oil; 5-15 parts of high-viscosity hydroxy silicone oil; 1-5 parts of hydrogen-containing silicone oil; 0.1-5 parts of MQ resin; 5-20 parts of reinforcing filler; and the concentration of acetylene alcohol inhibitor in the total mass of all rubber materials is 1-30ppm.

2. The organic silicon foam catalyst carrier according to claim 1, characterized in that: The vinyl silicone oil is a vinyl-terminated silicone oil with a viscosity of 50,000-600,000 and a vinyl content of 0.01-5%; the high-viscosity hydroxy silicone oil is 107 glue with a viscosity of 50,000-500,000 and a hydroxy content of 0.01-5%.

3. The organic silicon foam catalyst carrier according to claim 1, characterized in that: The methyl vinyl silicone rubber is 110 rubber, selected from one or two of 110-0, 110-1, 110-2, 110-3, and 110-4, with a molecular weight of 500,000-800,000 and a vinyl content of 0.01-6%; the low-viscosity hydroxyl silicone oil has a viscosity of 10-5000 cps and a hydroxyl content of 0.5%-10%.

4. The organosilicon foam catalyst carrier according to claim 1, characterized in that: The platinum catalyst is a platinum coordination compound, which is one or more selected from the group consisting of an alcohol solution of chloroplatinic acid, platinum coordinated with tetrahydrofuran, and platinum coordinated with divinyltetramethylsiloxane.

5. The organic silicon foam catalyst carrier according to claim 1, characterized in that: The reinforcing filler comprises one or both of fumed silica and silicon powder, with a particle size of 1-100 microns and a specific surface area of ​​100-500 m 2 / g.

6. The organosilicon foam catalyst carrier according to claim 1, characterized in that: The alkynol inhibitor in the B component is selected from one or more of 3-methyl-1-butyn-3-ol, 1-ethynyl cyclohexanol, 3-phenyl-1-butyn-3-ol, 3-propyl-1-butyn-3-ol and 3-octyl-1-butyn-3-ol, and the MQ resin in the B component is one or more of methyl MQ resin, methyl vinyl MQ resin, methyl hydrogen-containing MQ resin and vinyl MQ resin.

7. The method for preparing the organosilicon foam catalyst carrier according to any one of claims 1 to 6, characterized in that: The following steps are involved: (1) Prepare rubber materials A and B according to the formula, mix and stir the materials of components A and B into a viscous paste without obvious agglomeration, and then grind them manually or use a three-roll mill to grind the rubber materials into fine powder; (2) Add rubber materials A and B into the container, stir quickly for 0.5-5 minutes to fully mix rubber materials A and B. You can use a homogenizer or stir manually, and then let it stand at 100-200℃ for 5-30 minutes to solidify and foam to form pores; (3) Grinding the blocky organic silicon porous foam material obtained in step (2) into powder to obtain an organic silicon foam catalyst carrier.

8. A catalyst material, characterized in that The method for preparing the catalyst material comprising the organic silicon foam catalyst carrier according to claim 7 comprises the following steps: (1) A certain amount of catalyst powder can be added to rubber compound A or rubber compound B, and the other preparation methods are the same as the preparation method of the organosilicon foam carrier described in claim 7, so that the catalyst is loaded in situ; or (2) loading the catalyst and the prepared organosilicon foam carrier by ultrasonic vibration; Or (3) the catalyst powder is blended and ground with the prepared organosilicon foam carrier, and loaded by an electrostatic self-assembly method.

9. The catalyst material according to claim 8, characterized in that The catalyst includes carbon nitride.

10. Use of the catalyst material according to claim 9 in photocatalytic reduction of carbon dioxide.