WO2019149142A1 - Novel anode material and preparation method therefor, and device for generating ozone by electrolysis - Google Patents

Abstract

The present invention relates to a novel anode material and a preparation method therefor, and a device for generating ozone by electrolysis. The anode material is prepared by: adding 500-1500 parts by weight of SnC₂O₄ to a reaction kettle, and adding at least 150 parts by weight of water and stirring uniformly; adding 5-8 parts by weight of Sb₂O₃ to the reaction kettle, and stirring and heating the solution for uniform mixing, to obtain a mixture; adding 1-3 parts by weight of Ni(CH₃COO)₂·4H₂O to the mixture, introducing oxygen into the reaction kettle, heating and stirring the mixture until the materials in the kettle are in a suspended state, then stopping heating, precipitating the materials in the reaction kettle, and extracting the upper layer suspension after completion of precipitation, to give a Sn-containing suspension; coating the Sn-containing suspension on an anode plate, carrying out pyrolysis at a temperature of 400-600°C, and repeating the coating-pyrolysis process 7 to 9 times to form a coating film; and sintering the coating film at a temperature of 500-650°C for 60-120 minutes. The method for preparing the anode material of the present invention is simple and easy to operate, and produces no toxic and harmful substances when used for ozone production.

Description

Novel anode material, preparation method thereof and device for generating ozone by electrolysis Technical field

The invention relates to the field of material preparation, in particular to a novel anode material and a preparation method thereof, and a device for electrolytically generating ozone.

Background technique

Ozone O _{3 is} also known as superoxide and belongs to the allotrope of oxygen O ₂ . At normal temperature, the half-life of ozone is 15 to 30 minutes (minutes), resulting in difficulty in conventional storage of ozone and high cost. At the same time, ozone is highly oxidizing and easily decomposable, and can be used as a sewage purifying agent, a decolorizing agent, a disinfectant, and the like. Ozone sterilization is fast and effective, and ozone itself reduces oxygen. Therefore, the use of ozone has been widely recognized and is recognized as a green disinfectant in the world.

At present, the commonly used methods for producing ozone are corona method, electrolysis method, ultraviolet method, and nuclear radiation method. Among them, the corona method has high equipment investment, high operating cost, low ozone concentration produced by the ultraviolet method, high energy consumption by ultraviolet method, low concentration of ozone generation, and is not suitable for the production of large amount of ozone; the nuclear radiation method has large investment and is unsafe. The frequency of use is very low.

The production of ozone by electrolysis mainly includes electrolytic air and electrolytic pure water. Electrolytic production of ozone air can NO _x production process and other toxic substances, the desired high AC voltage, the electrolysis efficiency is low, difficulties ozone into the water, a large floor space, high cost; the most efficient ozone generated by water electrolysis unit, The electrolysis process uses a solid noble metal polymer as an electrolyte, and combines a cation exchange mode to obtain ozone by means of low-pressure electrolysis. However, in this process, the control system is relatively complicated, the electrolysis efficiency is low, ozone is difficult to enter the water, and the use cost is high.

Therefore, the preparation and application of ozone has been widely concerned by scholars at home and abroad.

Summary of the invention

In view of the above problems in the prior art, the present invention aims to provide a novel anode material and a preparation method thereof, and an electrolyte comprising the anode material, which can generate ozone by electrolysis, and in the present invention, a novel preparation The method of the anode material is simple and easy to operate, and when it is used for the production of ozone, the efficiency is high, energy is saved, and no toxic and harmful substances are produced.

The invention provides a novel preparation method of an anode material, wherein the anode material is attached to the anode plate by pyrolysis and roasting treatment of the Sn-containing suspension, and comprises the following steps:

A. Preparation of Sn-containing suspension: Preparation of raw materials: 500 to 1500 parts by weight of SnC ₂ O ₄ , 5 to 8 parts by weight of Sb ₂ O ₃ , and Ni to 3 parts by weight of Ni(CH ₃ COO) ₂ · 4H ₂ O 1 ; ₂ O _{4 is} added to the reaction vessel, at least 150 parts by weight of water is added to the reaction vessel and stirred uniformly; Sb ₂ O _{3 is} added to the reaction vessel, stirred and heated to make the mixture uniform, to obtain a mixture. Adding Ni(CH ₃ COO) ₂ ·4H ₂ O to the mixture, then introducing oxygen into the reaction vessel, heating and stirring until the material in the reactor is suspended and then heating is stopped. The material in the reaction vessel is precipitated, and after the precipitation is completed, the upper suspension is taken to obtain the Sn-containing suspension;

B. Pyrolysis treatment: coating the Sn-containing suspension on the anode plate, pyrolyzing at a temperature of 400 to 600 ° C, and repeating the coating-pyrolysis treatment 7 to 9 times to form Coating film;

C. Sintering treatment: The coating film is subjected to a sintering treatment, the temperature of the sintering treatment process is controlled to be 500 to 650 ° C, and the sintering time is controlled to be 60 to 120 min.

Further, the anode plate is prepared from a corrosion-resistant, high-temperature resistant metal; preferably, the anode plate is made of titanium metal.

As a preferred embodiment of the invention, deionized water is added to the kettle.

As a preferred embodiment of the present invention, the SnC ₂ O _{4 is} 550 to 900 parts by weight, the Sb ₂ O _{3 is} 5 to 8 parts by weight, and the Ni(CH ₃ COO) ₂ · 4H ₂ O is 1 to 1 3 parts by weight.

As a preferred embodiment of the present invention, the flow rate of the oxygen gas is 8 to 12 L/min.

Further, the temperature for controlling the heating process is 50 to 60 ° C, and the heating time is 1 to 2 hours (hours).

The present invention also proposes a novel anode material which is prepared by the above preparation method.

The present invention also provides an apparatus for electrolytically generating ozone, comprising an anode material, a cathode material, a power source, and an electrolyte, wherein the anode material is connected to a positive electrode of the power source through a wire, and the cathode material and a negative electrode of the power source pass A wire is connected, and both the anode material and the cathode material are placed in the electrolyte, and the anode material is the novel anode material described above.

As a preferred embodiment of the invention, the cathode material is selected from stainless steel sheets.

Further, the power source is a DC power source.

The novel anode material preparation method proposed by the invention is simple, easy to operate, and does not need to introduce complicated equipment. When the anode material is used for a device for electrolyzing ozone, the generation of ozone can be effectively promoted, and no toxic and harmful substances are generated in the process.

The present invention proposes an apparatus for electrolytically generating ozone, which uses a Sn-containing suspension to form a catalyst film layer on an anode plate for promoting the generation of ozone. The electrolyzing device can be directly used for treating industrial sewage, energy saving and environmental protection, high processing efficiency, easy operation and low cost of equipment operation.

DRAWINGS

1 is a schematic flow chart of a preparation method of a Sn-containing suspension proposed by the present invention.

Detailed ways

The embodiments of the present invention will be described in more detail in conjunction with the accompanying drawings and embodiments in order to provide a better understanding of the embodiments of the invention and the advantages thereof. However, the specific embodiments and examples described below are illustrative only and not limiting of the invention.

In this context, it is also to be noted that in order to avoid obscuring the invention by unnecessary detail, only the structures and/or processing steps closely related to the solution according to the invention are shown in the drawings, and the Other details that are not relevant to the present invention.

Finally, it is also to be understood that the terms "including", "comprising" or "comprising" or "the" It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, item, or device.

First, one of the objects of the present invention is to propose a novel method for preparing an anode material. The anode material of the present invention is attached to the anode plate by pyrolysis and calcination treatment of the Sn-containing suspension, and specifically includes the following steps:

(1) Preparation of Sn-containing suspension

As shown in Figure 1, the specific process includes the following:

1 Preparation of raw materials: 500 to 1500 parts by weight of SnC ₂ O ₄ , 5 to 8 parts by weight of Sb ₂ O _{3 , and} 1 to 3 parts by weight of Ni(CH ₃ COO) ₂ ·4H ₂ O.

The Sn-containing suspension prepared by the present invention mainly includes a Sn element, an Sb element, and a Ni element, and the existence form of the Sn element, the Sb element, and the Ni element is not limited to the three compounds taken in the production method of the present invention. In other embodiments of the present invention, Ni(CH ₃ COO) ₂ ·4H ₂ O can also be selected from other positive divalent compounds containing Ni; Sb ₂ O ₃ can also be selected from other positive trivalent compounds containing Sb; SnC ₂ O ₄ It is also possible to use other positive divalent compounds containing Sn.

Further, as a preferred embodiment of the present invention, SnC ₂ O _{4 is} weighed 550 to 900 parts by weight, Sb ₂ O _{3 is} weighed 5 to 8 parts by weight, and Ni(CH ₃ COO) ₂ · 4H ₂ O is weighed 1 to 3 Parts by weight.

2 The prepared SnC ₂ O _{4 was} added to the reaction vessel, and at least 150 parts by weight of water was added to the reaction vessel and stirred well. Preferably, the amount of water added is from 150 to 450 parts by weight. Among them, the stirring time is preferably controlled to 3 to 5 minutes. More preferably, deionized water is added to the kettle.

3 Add the prepared Sb ₂ O ₃ to the above reaction kettle, continue stirring for 3 to 5 minutes, and slowly heat the material in the reactor to a temperature of 50-60 ° C, so that SnC ₂ O ₄ and Sb ₂ O ₃ Mix well to obtain a mixture.

4 Add the prepared Ni(CH ₃ COO) ₂ · 4H ₂ O to the above mixture and continue stirring. Then, oxygen is introduced into the reaction vessel, and heating and stirring treatment are performed. After heating, the material in the reaction vessel is suspended, the heating is stopped, the material in the reaction vessel is naturally cooled, and the precipitate is allowed to stand. After the precipitation is completed, the upper layer is taken. The suspension is obtained as a suspension containing Sn.

Among them, the suspension means that the solid particles are dispersed in the liquid and cannot sink quickly due to Brownian motion, and the mixture of the solid dispersed phase and the liquid at this time is called a suspension.

As a preferred embodiment of the present invention, the flow rate of oxygen into the reactor is 8 to 12 L/min. After the oxygen is introduced into the reaction vessel, the temperature at which the heat treatment is carried out is 50 to 60 ° C, and the temperature in the reaction vessel is maintained at 50 to 60 ° C, and oxygen gas is continuously supplied and stirred. Preferably, the heating time is controlled to be 1 to 2 hours.

The time of the precipitation process is controlled to 6-8 hours, which can completely precipitate the material in the reactor.

The Sn-containing suspension prepared by the present invention can be stored for 30 days in an environment of 0-8 °C.

(2) Pyrolysis process

The Sn-containing suspension prepared above is coated on an anode plate, the pyrolysis temperature is controlled to 400 to 600 ° C, and the coating-pyrolysis process is repeated 7 to 9 times, so that the Sn-containing suspension can be on the anode plate. Cover it sufficiently to form a uniform coating film.

(3) Sintering process

The coating film obtained in the above step is subjected to a sintering treatment to form a stable and uniform catalyst film layer on the anode plate. The sintering temperature in this step is controlled to be 500 to 650 ° C, and the sintering time is controlled to be 60 to 120 min.

As a preferred embodiment of the present invention, the anode plate is made of a corrosion-resistant, high-temperature resistant conductive material such as titanium metal, graphite, platinum metal or the like. More preferably, the anode plate is made of titanium metal, which has lower manufacturing cost and superior performance.

The present invention also proposes an apparatus for electrolytically generating ozone, that is, an electrolysis apparatus capable of producing ozone by catalytic electrolysis (Catalysis and Electrolysis). The catalytic electrolysis method is a process which effectively promotes the progress of the electrolysis reaction by adding a suitable catalyst to the electrolysis device.

The electrolysis device of the present invention comprises an anode material, a cathode material, a power source, and an electrolyte. The power supply is a DC power supply. Wherein, the anode material is connected to the anode of the power source through a wire, the cathode material is connected to the cathode of the power source through a wire, and the anode material and the cathode material are both placed in the electrolyte. The anode material and the cathode material are separated by an insulating material. Further, the anode material in the electrolysis device is prepared by the above preparation method.

Among them, the cathode material is prepared from a corrosion-resistant conductive material. Preferably, the cathode material is a stainless steel plate.

In the electrolysis device, the electrolyte can be electrolyzed by using various non-strong acid and non-strong alkali water bodies. As a preferred embodiment of the present invention, when the electrolysis device is supplied with direct current, the ozone generated by the oxidation reaction on the anode material can directly act on the electrolyte water body, and the strong oxidation of the ozone is utilized to achieve the removal of the pollution in the water body. .

When the power supply is energized, the cations in the water move toward the cathode, absorb electrons, and reduce and generate new substances; the anions in the water move toward the anode, emit electrons, generate oxidation, and generate new substances.

Specifically, since the water body contains a small amount of oxygen (O ₂ ), the oxidation reaction occurring in the vicinity of the anode material and the reduction reaction occurring in the vicinity of the cathode material in the electrolysis device of the present invention are mainly as follows:

Anode reaction:

3H ₂ O-6e ^- =O ₃ +6H ⁺

Cathodic reaction:

3O ₂ +6H ⁺ +6e ^- =3H ₂ O ₂

Total electrolytic reaction: 3O ₂ +3H ₂ O=O ₃ +3H ₂ O ₂

During this reaction, the oxygen required for the cathodic reaction is derived from the constantly dissolved oxygen in the water. The H+ required for the cathodic reaction comes from the H+ produced by the sewage and anode reactions. Under the catalysis of the Sn-containing suspension prepared by the present invention, no harmful gas is generated during the electrolysis. Moreover, the hydrogen peroxide (H ₂ O ₂ ) produced by the electrolysis reaction is easily decomposed into water and oxygen as a green oxidant, and does not cause any harm to the environment and the human body.

The ozone generated by the electrolysis of the anode material can not only decompose various aromatic hydrocarbons and unsaturated chain hydrocarbons such as polychlorinated biphenyls, phenols, naphthalenes, etc., but also has a more decolorizing effect on hydrophilic dyes, and can be used for treating industrial sewage.

Example 1

Weigh 900g of SnC ₂ O ₄ into the reaction kettle, add 200g of deionized water and stir for 3min, then add 5g of Sb ₂ O ₃ to the reaction kettle, continue stirring for 3min, then heat the reaction vessel to a temperature of 50 ° C in the kettle. Further stirring was carried out by adding 1 g of Ni(CH ₃ COO) ₂ · 4H ₂ O.

Oxygen gas was introduced into the reaction vessel at a flow rate of 10 L/min, and the temperature in the reaction vessel was maintained at 50 ° C by heating, and oxygen was continuously supplied and stirred. After 1.5 h, the reaction vessel was stopped to be heated, the reaction vessel was naturally cooled, and precipitated for 6 hours, and the precipitated upper suspension was taken to obtain a Sn-containing suspension.

The above Sn-containing suspension was coated on a titanium plate and pyrolyzed at 500 ° C. The coating-pyrolysis process was repeated 8 times, and then the titanium plate to which the coating film was attached was sintered and sintered at 600 ° C. At 80 min, a uniform catalyst film layer was formed on the obtained titanium plate.

The titanium plate coated with the catalyst film layer described above serves as an anode, and the stainless steel plate serves as a cathode. The titanium plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the titanium plate and the stainless steel plate are placed in the phenol wastewater to be treated, the power source is energized, and oxidation and reduction reactions respectively occur near the anode and the cathode to realize the wastewater. Purification and sewage treatment.

The processing effect of this embodiment is shown in Table 1.

Table 1 Effect of the electrolysis unit of Example 1 on the treatment of phenol wastewater

project	ozone	Pre-treatment phenol	Phenol after treatment
Concentration (mg/L)	3.5	10	<0.1

Among them, the method for detecting the ozone concentration is a chemical iodometric method. The method for detecting the concentration of phenol is the bromate method.

Example 2

Weigh 1200g of SnC ₂ O ₄ into the reaction kettle, add 400g of deionized water and stir for 3min, then add 8g of Sb ₂ O ₃ to the reaction kettle, continue to stir for 3min, then heat the reactor to a temperature of 50 ° C, then Stirring was continued by adding 2 g of Ni(CH ₃ COO) ₂ · 4H ₂ O.

Oxygen gas was introduced into the reaction vessel at a flow rate of 8 L/min, and the temperature in the reaction vessel was maintained at 50 ° C by heating, and oxygen was continuously supplied and stirred. After 1.5 h, the reaction vessel was stopped to be heated, the reaction vessel was naturally cooled, and precipitated for 6 hours, and the precipitated upper suspension was taken to obtain a Sn-containing suspension.

The above Sn-containing suspension was coated on a titanium plate and pyrolyzed at 550 ° C. The coating-pyrolysis process was repeated 8 times, and then the titanium plate to which the coating film was attached was sintered and sintered at 650 ° C. At 80 min, a uniform catalyst film layer was formed on the obtained titanium plate.

The titanium plate coated with the catalyst film layer described above serves as an anode, and the stainless steel plate serves as a cathode. The titanium plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the titanium plate and the stainless steel plate are placed in the phenol wastewater to be treated, the power source is energized, and oxidation and reduction reactions respectively occur near the anode and the cathode to realize the wastewater. Purification and sewage treatment.

The processing effect of this embodiment is shown in Table 2.

Table 2 Example 2 Effect of electrolysis unit on phenol wastewater treatment

project	ozone	Pre-treatment phenol	Phenol after treatment
Concentration (mg/L)	4	8	<0.1

Among them, the method for detecting the ozone concentration is a chemical iodometric method. The method for detecting the concentration of phenol is the bromate method.

Example 3

Weigh 550 g of SnC ₂ O ₄ into the reaction vessel, add 160 g of deionized water and stir for 3 min, then add 5 g of Sb ₂ O ₃ to the reaction vessel, continue stirring for 3 min, and then heat the reaction vessel to a temperature of 50 ° C in the autoclave. Stirring was further carried out by adding ₃ g of Ni(CH ₃ COO) ₂ · 4H ₂ O.

Oxygen gas was introduced into the reaction vessel at a flow rate of 12 L/min, and the temperature in the reaction vessel was maintained at 50 ° C by heating, and oxygen was continuously supplied and stirred. After 1.5 h, the reaction vessel was stopped to be heated, the reaction vessel was naturally cooled, and precipitated for 6 hours, and the precipitated upper suspension was taken to obtain a Sn-containing suspension.

The above Sn-containing suspension was coated on a titanium plate and pyrolyzed at 500 ° C, the coating-pyrolysis process was repeated 8 times, and then the titanium plate to which the coated film was attached was sintered and sintered at 650 ° C. At 80 min, a uniform catalyst film layer was formed on the obtained titanium plate.

The titanium plate coated with the catalyst film layer described above serves as an anode, and the stainless steel plate serves as a cathode. The titanium plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the titanium plate and the stainless steel plate are placed in the phenol wastewater to be treated, the power source is energized, and oxidation and reduction reactions respectively occur near the anode and the cathode to realize the wastewater. Purification and sewage treatment.

The processing effect of this embodiment is shown in Table 3.

Table 3 Example 3 Effect of Electrolyzer on Phenol Wastewater Treatment

project	ozone	Pre-treatment phenol	Phenol after treatment
Concentration (mg/L)	4.5	10	0

Among them, the method for detecting the ozone concentration is a chemical iodometric method. The method for detecting the concentration of phenol is the bromate method.

Example 4

Weigh 1500 g of SnC ₂ O ₄ into the reaction vessel, add 450 g of deionized water and stir for 5 min, then add 5 g of Sb ₂ O ₃ to the reaction vessel, continue stirring for 3 min, and then heat the reaction vessel until the temperature in the autoclave is 60 ° C. Further stirring was carried out by adding 1 g of Ni(CH ₃ COO) ₂ · 4H ₂ O.

Oxygen gas was introduced into the reaction vessel at a flow rate of 9 L/min, and the temperature in the reaction vessel was maintained at 60 ° C by heating, and oxygen was continuously supplied and stirred. After 1 h, the reaction vessel was stopped to be heated, the reaction vessel was naturally cooled, and precipitated for 7 hours, and the precipitated upper suspension was taken to obtain a Sn-containing suspension.

The above Sn-containing suspension was coated on a platinum sheet and pyrolyzed at 400 ° C. The coating-pyrolysis process was repeated 9 times, and then the platinum film to which the coating film was attached was sintered and sintered at 500 ° C for 90 minutes. Forming a uniform catalyst film layer.

The platinum plate coated with the catalyst film layer described above serves as an anode, and the stainless steel plate serves as a cathode. The platinum plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the platinum plate and the stainless steel plate are placed in the naphthalene-containing waste water to be treated, the power source is energized, and the oxidation and reduction reactions respectively occur near the anode and the cathode, thereby realizing Wastewater purification and sewage treatment.

The processing effect of this embodiment is shown in Table 4.

Table 4 Example 4 Effect of Electrolyzing Device on Treatment of Naphthalene Containing Wastewater

project	ozone	Pre-treatment naphthalene	Post-treatment naphthalene
Concentration (mg/L)	3.2	9.8	<0.2

Among them, the method for detecting the ozone concentration is a chemical iodometric method. The method for detecting the concentration of naphthalene is gas chromatography.

Example 5

Weigh 500g of SnC ₂ O ₄ into the reaction vessel, add 150g of deionized water and stir for 4min, then add 6g of Sb ₂ O ₃ to the reaction kettle, continue stirring for 3min, and then heat the reactor to a temperature of 55 ° C. Further stirring was carried out by adding 1 g of Ni(CH ₃ COO) ₂ · 4H ₂ O.

Oxygen gas was introduced into the reaction vessel at a flow rate of 10 L/min, and the temperature in the reaction vessel was maintained at 55 ° C by heating, and oxygen was continuously supplied and stirred. After 2 h, the reaction vessel was stopped to be heated, the reaction vessel was naturally cooled, and precipitated for 6 hours, and the precipitated upper suspension was taken to obtain a Sn-containing suspension.

The above Sn-containing suspension was coated on a titanium plate and pyrolyzed at 450 ° C. The coating-pyrolysis process was repeated 7 times, and then the titanium plate to which the coating film was attached was sintered and sintered at 650 ° C. At 60 min, a uniform catalyst film layer was formed on the obtained titanium plate.

The titanium plate coated with the catalyst film layer described above serves as an anode, and the stainless steel plate serves as a cathode. The titanium plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the titanium plate and the stainless steel plate are placed in the naphthalene-containing waste water to be treated, the power source is energized, and oxidation and reduction reactions occur respectively near the anode and the cathode to realize Wastewater purification and sewage treatment.

The processing effect of this embodiment is shown in Table 5.

Table 5 Example 5 Effect of Electrolyzing Device on Treatment of Naphthalene Containing Wastewater

project	ozone	Pre-treatment naphthalene	Post-treatment naphthalene
Concentration (mg/L)	4.2	9	<0.1

Among them, the method for detecting the ozone concentration is a chemical iodometric method. The method for detecting the concentration of naphthalene is gas chromatography.

Control case

Only the titanium plate was used as the anode, and the stainless steel plate was used as the cathode. The titanium plate is connected to the positive electrode of the power source through a wire, the stainless steel is connected to the negative electrode of the power source through a wire, and the titanium plate and the stainless steel plate are placed in the wastewater containing naphthalene wastewater or phenol to be treated, and the power source is energized, and the electrolysis condition is the same as that in the first embodiment. Electrolytic treatment.

Ozone formation was not detected under the test conditions. The treatment effects of naphthalene-containing wastewater and phenol wastewater are shown in Table 6:

Table 6 Comparison of the effects of electrolysis equipment on the treatment of wastewater containing naphthalene or phenol

project	Pre-treatment naphthalene	Post-treatment naphthalene	Pre-treatment phenol	Phenol after treatment
Concentration (mg/L)	8.9	8.2	9.3	8.7

In summary, the Sn-containing suspension prepared by the invention can promote the generation of ozone in the electrolysis process well, and has a considerable effect on the purification treatment of the sewage, and is advantageous for industrial application.

It should be noted that the above-described embodiments are merely illustrative of the invention and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Claims (10)

1. A novel method for preparing an anode material, characterized in that the anode material is attached to the anode plate by pyrolysis and roasting treatment of the Sn-containing suspension, comprising the following steps:

   A. Preparation of Sn-containing suspension: Preparation of raw materials: 500 to 1500 parts by weight of SnC ₂ O ₄ , 5 to 8 parts by weight of Sb ₂ O ₃ , and Ni to 3 parts by weight of Ni(CH ₃ COO) ₂ · 4H ₂ O 1 ; ₂ O _{4 is} added to the reaction vessel, at least 150 parts by weight of water is added to the reaction vessel and stirred uniformly; Sb ₂ O _{3 is} added to the reaction vessel, stirred and heated to make the mixture uniform, to obtain a mixture. Adding Ni(CH ₃ COO) ₂ ·4H ₂ O to the mixture, then introducing oxygen into the reaction vessel, heating and stirring until the material in the reactor is suspended and then heating is stopped. The material in the reaction vessel is precipitated, and after the precipitation is completed, the upper suspension is taken to obtain the Sn-containing suspension;

   B. Pyrolysis treatment: coating the Sn-containing suspension on the anode plate, pyrolyzing at a temperature of 400 to 600 ° C, and repeating the coating-pyrolysis treatment 7 to 9 times to form Coating film;

   C. Sintering treatment: The coating film is subjected to a sintering treatment, the temperature of the sintering treatment process is controlled to be 500 to 650 ° C, and the sintering time is controlled to be 60 to 120 min.
2. The method of preparing an anode material according to claim 1, wherein the anode plate is made of a corrosion-resistant, high-temperature resistant metal; preferably, the anode plate is made of titanium metal.
3. The method for preparing an anode material according to claim 1, wherein the SnC ₂ O _{4 is} 550 to 900 parts by weight, and the Sb ₂ O _{3 is} 5 to 8 parts by weight, the Ni (CH ₃ COO). ₂ ·4H ₂ O is taken in an amount of 1 to 3 parts by weight.
4. The method of producing an anode material according to claim 1, wherein deionized water is added to the reaction vessel.
5. The method of preparing an anode material according to claim 1, wherein the flow rate of the oxygen gas is 8 to 12 L/min.
6. The method of preparing an anode material according to claim 1, wherein the temperature for controlling the heating process is 50 to 60 ° C, and the heating time is 1 to 2 h.
7. A novel anode material characterized in that the anode material is prepared by the preparation method according to any one of claims 1-6.
8. An apparatus for electrolyzing ozone, comprising an anode material, a cathode material, a power source, and an electrolyte, wherein the anode material is connected to a positive electrode of the power source through a wire, and the cathode material is connected to a negative electrode of the power source through a wire, Both the anode material and the cathode material are disposed in the electrolyte, characterized in that the anode material is the novel anode material of claim 7.
9. The apparatus for electrolyzing ozone according to claim 8, wherein the cathode material is a stainless steel plate.
10. The apparatus for electrolyzing ozone according to claim 8, wherein the power source is a direct current power source.

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