Preparation method of black mica-based catalytic material, black mica-based catalytic material and application
By preparing highly stable black talc-based catalytic materials, the problem of low catalyst stability was solved, achieving efficient degradation of organic pollutants, reducing costs, and eliminating safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHONGNAN (SHANGRAO) METALLURGICAL IND RES INST CO LTD
- Filing Date
- 2023-12-20
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the catalysts added during wastewater treatment have low stability, leading to limitations in their use and safety hazards.
By preparing black talc-based catalytic materials, including steps such as crushing, ball milling, screening, acid dissolution, ultrasonic treatment and alkalization, black talc-based catalytic materials with high chemical stability and catalytic activity are prepared for the degradation of organic pollutants in persulfate systems.
It effectively reduces the production cost of catalytic materials, improves catalytic stability, enhances the degradation performance of organic pollutants, eliminates safety hazards, and improves user experience.
Smart Images
Figure CN118059843B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of energy conservation and environmental protection technology, and in particular to a method for preparing a black talc-based catalytic material, the black talc-based catalytic material and its application. Background Technology
[0002] With the rapid development of industrialization and urbanization, a large amount of industrial wastewater has also been generated. Due to the complex composition, poor biodegradability, stable molecular structure and high toxicity of such pollutants, they can accumulate in organisms and the human body through the food chain, thereby causing various diseases and posing a serious threat to human health and the ecosystem.
[0003] Among them, existing technologies widely use advanced oxidation methods to directly mineralize organic pollutants or improve the biodegradability of pollutants through oxidation. Specifically, because the sulfate ions generated by the persulfate system have high selectivity for pollutants, and persulfates are relatively stable and easy to store, they are widely used in industrial wastewater.
[0004] However, the above-mentioned wastewater treatment methods are costly, may experience deactivation due to agglomeration, and have low stability of added catalysts. As a result, these wastewater treatment methods have certain limitations and pose certain safety hazards. Summary of the Invention
[0005] Therefore, the purpose of this invention is to provide a method for preparing a black talc-based catalytic material, the black talc-based catalytic material and its application, in order to solve the problem that the existing technology has low stability of the catalysts added in the wastewater treatment process, resulting in certain limitations in their use.
[0006] One aspect of the embodiments of the present invention proposes:
[0007] A method for preparing a black talc-based catalytic material, wherein the method includes:
[0008] A certain mass of black talc raw material is weighed and crushed to prepare black talc crushed stone.
[0009] An activator is added to the black talc crushed stone according to a preset mass ratio, and the stone is then ball-milled and screened in sequence to prepare black talc mineral powder.
[0010] The black talc powder is acid-dissolved according to a preset solid-liquid ratio to prepare a corresponding black talc mixture. A predetermined mass of activating iron is added to the black talc mixture after stirring, and then ultrasonic treatment is performed.
[0011] The black talc mixture after ultrasonic treatment was alkalized, and then the alkalized black talc mixture was subjected to precipitation filtration, washing, drying and screening in sequence to prepare black talc-based catalytic materials.
[0012] The beneficial effects of this invention are: by preparing corresponding talc-based catalytic materials in real time based on talc, the production cost of catalytic materials can be effectively reduced. Furthermore, due to the existing carbonaceous intercalation structure of talc, along with its high conductivity, specific surface area, surface active groups, chemical stability, and high adsorption and loading capacity, the prepared talc-based catalytic materials can exhibit strong degradation performance of organic pollutants in production wastewater within a treatment system composed of persulfate. Simultaneously, the high structural stability of the talc-based catalytic materials results in strong catalytic stability against organic pollutants, thereby effectively degrading organic pollutants in production wastewater, eliminating safety hazards, and improving the user experience.
[0013] Furthermore, the activator is one or a mixture of methanol, ethanol and propylene glycol, and the preset mass ratio between the activator and the black talc crushed stone is 1:1-10.
[0014] Furthermore, the acid solution used to acid-dissolve the black talc powder is one or a mixture of hydrochloric acid, nitric acid, and sulfuric acid.
[0015] Furthermore, the activating iron agent includes one or a mixture of pyrite, goethite, magnetite, siderite, chemical iron slag, and Fenton iron mud, and the mass ratio of the activating iron agent to the black talc mixture is 1:0.3-8.
[0016] Furthermore, the activating iron agent is prepared by ball milling iron agent with a particle size of 0.08-0.16 mm and an activating agent in a preset mass ratio for 0.5-2 hours;
[0017] The activator is one or a mixture of oxalic acid, citric acid, acetic acid, humic acid and ascorbic acid;
[0018] The mass ratio of the activator to the iron agent is 1:0.5-20.
[0019] Furthermore, the step of adding an activator to the black talc crushed stone according to a preset mass ratio, and then sequentially performing ball milling and screening to prepare black talc mineral powder includes:
[0020] The black talc gravel with the added activator was ball-milled for 0.5-2 hours.
[0021] The black talc crushed stone after ball milling was screened under the following conditions: sieve through 100-200 mesh to prepare the black talc mineral powder.
[0022] Furthermore, the step of adding a predetermined mass of activating iron to the stirred black talc mixture and performing ultrasonic treatment includes:
[0023] The black talc mixture was stirred using a mixer at a speed of 100-400 rpm / min for 1-5 hours.
[0024] The activated iron agent is added to the black talc mixture after stirring, and the mixture is subjected to ultrasonic treatment for 1-3 hours.
[0025] Furthermore, the steps of alkalizing the ultrasonically treated black talc mixture and sequentially subjecting the alkalized black talc mixture to precipitation filtration, washing, drying, and screening include:
[0026] The pH value of the ultrasonically treated black talc mixture was adjusted to 8.5-11, and the adjusted black talc mixture was subjected to precipitation filtration, washing, drying at 40-70℃ for 3-5 hours, and passing through a 100-mesh sieve to prepare the black talc-based catalytic material.
[0027] Another aspect of the present invention provides:
[0028] A black talc-based catalytic material, wherein it is obtained by the black talc-based catalytic material preparation method described above.
[0029] Another aspect of the present invention provides:
[0030] An application of a black talc-based catalytic material, wherein the black talc-based catalytic material as described above is used as a catalyst for heterogeneous catalysis of persulfate, thereby achieving efficient degradation of pollutants.
[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0032] Figure 1 This is a diagram showing the pollutant removal effect after the reaction reaches room temperature equilibrium, as provided in Example 1 of this invention.
[0033] Figure 2 This is a diagram showing the pollutant removal effect after the reaction reaches room temperature equilibrium, as provided in Example 2 of this invention.
[0034] Figure 3This is a diagram showing the pollutant removal effect after room temperature reaction equilibrium provided in Example 3 of the present invention;
[0035] Figure 4 This is a diagram showing the pollutant removal effect after room temperature reaction equilibrium provided in Example 4 of the present invention;
[0036] Figure 5 This is a diagram illustrating the pollutant removal effect after room temperature reaction equilibrium, as provided in Example 5 of this invention.
[0037] Figure 6 This is a schematic diagram of the pollutant removal effect after room temperature reaction equilibrium provided in Example 6 of the present invention.
[0038] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation
[0039] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0042] Please see Figures 1 to 6 The figure shows a method for preparing black talc-based catalytic materials in an embodiment of the present invention. The method for preparing black talc-based catalytic materials provided by the present invention can effectively degrade organic pollutants in production wastewater, thereby eliminating safety hazards and improving the user experience.
[0043] Specifically, this invention provides:
[0044] A method for preparing a black talc-based catalytic material, wherein the method includes:
[0045] Step S10: Weigh a certain mass of black talc raw material and crush the black talc raw material to prepare black talc crushed stone accordingly;
[0046] Step S20: Add an activator to the black talc crushed stone according to a preset mass ratio, and then perform ball milling and screening processes in sequence to prepare black talc mineral powder.
[0047] Step S30: The black talc powder is acid-dissolved according to a preset solid-liquid ratio to prepare a corresponding black talc mixture. A predetermined mass of activating iron is added to the black talc mixture after stirring, and ultrasonic treatment is performed.
[0048] Step S40: The ultrasonically treated black talc mixture is alkalized, and the alkalized black talc mixture is then subjected to precipitation filtration, washing, drying and screening to prepare the black talc-based catalytic material.
[0049] Furthermore, the activator is one or a mixture of methanol, ethanol, and propylene glycol, and the preset mass ratio between the activator and the crushed black talc is 1:1-10. It should be noted that adding the activator to the crushed black talc greatly enhances the chemical activity of the black talc, that is, it maximizes the activation of the chemical properties of the black talc, thereby allowing the black talc to fully react in subsequent reactions, facilitating subsequent processing.
[0050] Furthermore, the acid solution used for acid dissolution of the black talc ore powder is one or a mixture of hydrochloric acid, nitric acid, and sulfuric acid. The acid solution can fully dissolve the black talc ore powder to prepare a high-purity black talc mixed solution, thereby improving the purity of the subsequently prepared black talc-based catalyst material.
[0051] Furthermore, the activating iron agent includes one or a mixture of pyrite, goethite, magnetite, siderite, chemical slag, and Fenton's iron mud, and the mass ratio of the activating iron agent to the black talc mixture is 1:0.3-8. It should be noted that by adding the activating iron agent to the black talc mixture, iron ions are introduced into the mixture. Furthermore, these iron ions can chemically react with the black talc in the solution, thereby further activating the chemical properties of the black talc.
[0052] Furthermore, the activating iron agent is prepared by ball milling iron agent with a particle size of 0.08-0.16 mm and an activating agent in a preset mass ratio for 0.5-2 hours;
[0053] The activator is one or a mixture of oxalic acid, citric acid, acetic acid, humic acid and ascorbic acid;
[0054] The mass ratio of the activator to the iron agent is 1:0.5-20. If too much iron agent is added, peroxidation may occur during the subsequent reaction; conversely, if too little iron agent is added, incomplete reaction may occur.
[0055] Furthermore, the step of adding an activator to the black talc crushed stone according to a preset mass ratio, and then sequentially performing ball milling and screening to prepare black talc mineral powder includes:
[0056] The black talc gravel with the added activator was ball-milled for 0.5-2 hours.
[0057] The black talc crushed stone after ball milling was screened under the following conditions: sieve through 100-200 mesh to prepare the black talc mineral powder.
[0058] Furthermore, the step of adding a predetermined mass of activating iron to the stirred black talc mixture and performing ultrasonic treatment includes:
[0059] The black talc mixture was stirred using a mixer at a speed of 100-400 rpm / min for 1-5 hours.
[0060] The activated iron agent is added to the stirred black talc mixture, and then subjected to ultrasonic treatment for 1-3 hours. It should be noted that ultrasonic treatment of the black talc mixture with added activated iron agent can activate the activity of various ions in the mixture, allowing them to react fully in the solution and thus improving the catalytic performance of the prepared black talc-based catalytic material, thereby efficiently decomposing organic pollutants.
[0061] Furthermore, the steps of alkalizing the ultrasonically treated black talc mixture and sequentially subjecting the alkalized black talc mixture to precipitation filtration, washing, drying, and screening include:
[0062] The pH value of the ultrasonically treated black talc mixture was adjusted to 8.5-11. The adjusted mixture was then subjected to precipitation filtration, washing, drying at 40-70℃ for 3-5 hours, and passing through a 100-mesh sieve to prepare the black talc-based catalytic material. It should be noted that since most existing production wastewater is acidic, adjusting the pH value of the ultrasonically treated black talc mixture to 8.5-11 (i.e., making it alkaline) can both degrade organic pollutants in the wastewater and effectively neutralize it, thereby effectively purifying the wastewater and eliminating potential safety hazards.
[0063] Case 1:
[0064] This case study includes comparative and exemplary examples. The comparative example uses untreated 100-mesh black talc ore, specifically pyrite with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) The black talc is crushed, and ethanol is added at a mass ratio of 1:1 for ball milling for 1 hour. The ore is then sieved to obtain 100-mesh powder. The powder is dissolved in hydrochloric acid at a solid-liquid ratio of 30%, and stirred at 300 rpm / min for 2 hours; 2) An activated iron agent is added to the mixture from step 1) at a mass ratio of 1:1. This activated iron agent is obtained by ball milling oxalic acid and pyrite at a mass ratio of 1:2 for 0.5 hours. The mixture is then ultrasonically treated for 1.5 hours; 3) Alkali is added to the mixture from step 2) to adjust the pH to 9. The precipitate is filtered, washed, dried at 50°C for 3 hours, and then sieved through a 100-mesh sieve to obtain the black talc-based catalyst BT@Py. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and 100 mL in conical flasks. 0.8 g BT@Py, 0.8 g black talc, and 0.8 g pyrite were weighed out, along with 2 mM Na₂S₂O₈ (pH 4). After the reaction reached equilibrium at 25°C, the pollutant removal effect was as follows: Figure 1 As shown.
[0065] Case 2:
[0066] This case study includes comparative and exemplary examples. The comparative example uses untreated 100-mesh black talc ore, specifically goethite with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) Crushing the black talc, adding ethanol at a mass ratio of 1:2, ball milling for 1.5 hours, and sieving to obtain 100-mesh ore powder. The ore powder is then dissolved in hydrochloric acid at a solid-liquid ratio of 30%, and stirred at 300 rpm / min for 1.5 hours; 2) Adding an activated iron agent to the mixture from step 1) at a mass ratio of 1:2. The activated iron agent is obtained by ball milling oxalic acid and goethite at a mass ratio of 1:2 for 1.0 hour. The mixture is then ultrasonically treated for 1.5 hours; 3) Adjusting the pH to 10 by adding alkali to the mixture from step 2), filtering and washing the precipitate, drying it at 70°C for 3 hours, and passing it through a 100-mesh sieve to obtain the black talc-based catalyst BT@Ge. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and 100 mL in conical flasks. 0.8 g BT@Ge, 0.8 g black talc, and 0.8 g goethite were weighed out, along with 2 mM Na₂S₂O₈ (pH 4). After the reaction reached equilibrium at 25°C, the pollutant removal effect was as follows: Figure 2 As shown.
[0067] Case 3:
[0068] This case includes comparative examples and exemplary examples. The comparative example uses untreated 100-mesh black talc ore and magnetite with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) The black talc is crushed, ethanol is added at a mass ratio of 1:3, and the mixture is ball-milled for 1 hour, then sieved to obtain 100-mesh ore powder. The ore powder is acid-dissolved with hydrochloric acid at a solid-liquid ratio of 30%, and stirred at 300 rpm / min for 2 hours; 2) An activated iron agent is added to the mixture from step 1) at a mass ratio of 1:1. The activated iron agent is obtained by ball-milling a mixture of citric acid and oxalic acid with magnetite at a mass ratio of 1:2 for 0.5 hours. The mixture is ultrasonically treated for 1.5 hours; 3) An alkali is added to the mixture from step 2) to adjust the pH to 10. The precipitate is filtered, washed, dried at 70°C for 3 hours, and sieved through a 100-mesh sieve to obtain the black talc-based catalyst BT@Ma. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and placed in conical flasks. 0.8 g of BT@Ma, 0.8 g of black talc, 0.8 g of magnetite, 2 mM Na₂S₂O₈, pH 4 were weighed out and reacted at room temperature (25℃) to achieve the following pollutant removal effects: Figure 3 As shown.
[0069] Case 4:
[0070] This case study includes comparative and exemplary examples. The comparative example uses untreated 100-mesh black talc ore and siderite with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) The black talc is crushed, ethanol is added at a mass ratio of 1:3, and the mixture is ball-milled for 1 hour, then sieved to obtain 100-mesh ore powder. The ore powder is then acid-dissolved with hydrochloric acid at a solid-liquid ratio of 30%, and stirred at 400 rpm / min for 2 hours; 2) An activated iron agent is added to the mixture from step 1) at a mass ratio of 1:1. The activated iron agent is obtained by ball-milling acetic acid and siderite at a mass ratio of 1:2 for 0.5 hours, and the mixture is ultrasonically treated for 1.5 hours; 3) An alkali is added to the mixture from step 2) to adjust the pH to 10, the precipitate is filtered, washed, dried at 40°C for 3 hours, and then sieved through a 100-mesh sieve to obtain the black talc-based catalyst BT@Si. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and placed in conical flasks. 0.8 g BT@Py, 0.8 g black talc, and 0.8 g siderite were weighed out, along with 2 mM Na₂S₂O₈ (pH 4). After the reaction reached equilibrium at 25°C, the pollutant removal effect was as follows: Figure 4 As shown.
[0071] Case 5:
[0072] This case study includes comparative and exemplary examples. The comparative example uses untreated 100-mesh black talc ore and chemical iron slag with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) The black talc is crushed, ethanol is added at a mass ratio of 1:4, and the mixture is ball-milled for 1 hour and sieved to obtain 100-mesh ore powder. The ore powder is then dissolved in hydrochloric acid at a solid-liquid ratio of 30% and stirred at 300 rpm / min for 2 hours; 2) An activated iron agent is added to the mixture from step 1) at a mass ratio of 1:1. The activated iron agent is obtained by ball-milling oxalic acid and chemical iron slag at a mass ratio of 1:2 for 0.5 hours. The mixture is then ultrasonically treated for 1.5 hours; 3) Alkali is added to the mixture from step 2) to adjust the pH to 11. The precipitate is filtered, washed, dried at 60°C for 3 hours, and sieved through a 100-mesh sieve to obtain the black talc-based catalyst BT@Fw. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and placed in conical flasks. 0.8 g BT@Fw, 0.8 g black talc, and 0.8 g chemical iron slag were weighed out, along with 2 mM Na₂S₂O₈ (pH 4). After the reaction reached equilibrium at 25°C, the pollutant removal effect was as follows: Figure 5 As shown.
[0073] Case 6:
[0074] This case study includes comparative and exemplary examples. The comparative example uses untreated 100-mesh black talc ore and Fenton iron sludge with a particle size of 0.16 mm. The exemplary example includes the following steps: 1) The black talc is crushed, ethanol is added at a mass ratio of 1:3, and the mixture is ball-milled for 1 hour and sieved to obtain 100-mesh mineral powder. The mineral powder is then dissolved in hydrochloric acid at a solid-liquid ratio of 30% and stirred at 300 rpm / min for 2 hours; 2) An activated iron agent is added to the mixture from step 1) at a mass ratio of 1:1. The activated iron agent is obtained by ball-milling ascorbic acid and Fenton iron sludge at a mass ratio of 1:2 for 0.5 hours. The mixture is then ultrasonically treated for 1.5 hours; 3) Alkali is added to the mixture from step 2) to adjust the pH to 9. The precipitate is filtered, washed, dried at 50°C for 3 hours, and sieved through a 100-mesh sieve to obtain the black talc-based catalyst BT@Fs. Sulfamethoxazole (SMX), 2,4-dichlorophenol (2,4-DCP), disodium adenosine triphosphate, acetaminophen (ACT), cellulose acetate phthalate (CAP), rhodamine B, hydroxyethylidene diphosphonic acid (HEDP), and benzyloxycarbonyl (CBZ) were each prepared at an initial concentration of 100 mg / L and placed in conical flasks. 0.8 g of BT@Fs, 0.8 g of black talc, 0.8 g of Fenton iron sludge, 2 mM Na₂S₂O₈, pH 4 were weighed out and reacted at room temperature (25℃) to achieve the following pollutant removal effects: Figure 6 As shown.
[0075] The seventh embodiment of the present invention provides a black talc-based catalytic material, wherein it is obtained by the black talc-based catalytic material preparation method described above.
[0076] The eighth embodiment of the present invention provides an application of a black talc-based catalytic material, wherein the black talc-based catalytic material as described above is used as a catalyst for heterogeneous catalysis of persulfate, so as to achieve efficient degradation of pollutants.
[0077] In summary, the preparation method of the black talc-based catalytic material, the black talc-based catalytic material and its application in the above embodiments of the present invention can effectively degrade organic pollutants in production wastewater, thereby eliminating safety hazards and improving the user experience.
[0078] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0079] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.
Claims
1. A method for preparing a black talc-based catalytic material, characterized in that, The method includes: A certain mass of black talc raw material is weighed and crushed to prepare black talc crushed stone. An activator is added to the black talc crushed stone according to a preset mass ratio, and the stone is then ball-milled and screened in sequence to prepare black talc mineral powder. The black talc powder is acid-dissolved according to a preset solid-liquid ratio to prepare a corresponding black talc mixture. A predetermined mass of activating iron is added to the black talc mixture after stirring, and then ultrasonic treatment is performed. The ultrasonically treated black talc mixture was alkalized, and the alkalized black talc mixture was then subjected to precipitation filtration, washing, drying and screening to prepare black talc-based catalytic materials. The activator is one or a mixture of methanol, ethanol and propylene glycol, and the preset mass ratio between the activator and the black talc crushed stone is 1:1-10. The acid solution used to acid dissolve the black talc powder is one or a mixture of hydrochloric acid, nitric acid, and sulfuric acid. The activating iron agent includes one or a mixture of pyrite, goethite, magnetite, siderite, chemical iron slag, and Fenton iron mud, and the mass ratio of the activating iron agent to the black talc mixture is 1:0.3-8. The activating iron agent is prepared by ball milling iron agent with a particle size of 0.08-0.16 mm and an activating agent in a preset mass ratio for 0.5-2 hours. The activator is one or a mixture of oxalic acid, citric acid, acetic acid, humic acid and ascorbic acid; The mass ratio of the activator to the iron agent is 1:0.5-20.
2. The method for preparing the black talc-based catalytic material according to claim 1, characterized in that: The steps of adding an activator to the black talc crushed stone according to a preset mass ratio, and then sequentially performing ball milling and screening to prepare black talc mineral powder include: The black talc gravel with the added activator was ball-milled for 0.5-2 hours. The black talc crushed stone after ball milling was screened under the following conditions: sieve through 100-200 mesh to prepare the black talc mineral powder.
3. The method for preparing the black talc-based catalytic material according to claim 1, characterized in that: The step of adding a predetermined mass of activating iron to the stirred black talc mixture and performing ultrasonic treatment includes: The black talc mixture was stirred using a mixer at a speed of 100-400 rpm / min for 1-5 hours. The activated iron agent is added to the black talc mixture after stirring, and the mixture is subjected to ultrasonic treatment for 1-3 hours.
4. The method for preparing the black talc-based catalytic material according to claim 1, characterized in that: The steps of alkalizing the ultrasonically treated black talc mixture and sequentially subjecting the alkalized black talc mixture to precipitation filtration, washing, drying, and screening include: The pH value of the ultrasonically treated black talc mixture was adjusted to 8.5-11, and the adjusted black talc mixture was subjected to precipitation filtration, washing, drying at 40-70℃ for 3-5 hours, and passing through a 100-mesh sieve to prepare the black talc-based catalytic material.
5. A black talc-based catalytic material, characterized in that: It is obtained by the method for preparing black talc-based catalytic materials as described in any one of claims 1 to 4.
6. An application of a black talc-based catalytic material, characterized in that: Using the black talc-based catalytic material as described in claim 5 as a catalyst for heterogeneous catalysis of persulfate, a highly efficient degradation of pollutants can be achieved.