A high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure, and its preparation method and application

Abstract

The present invention discloses a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, a preparation method thereof, and an application thereof. The adsorption material uses amino-modified natural polysaccharides as raw materials, and through in-situ growth technology and hydrothermal synthesis, a reduced graphene oxide composite zinc hydroxystannate structure is loaded on an adsorption gel, thereby improving the mechanical strength and water stability of the composite material. At the same time, a metal-organic framework ZIF-67 porous material is used to further increase its adsorption selectivity and affinity for specific metal ions. In addition, the introduction of montmorillonite and potassium humate further enhances the conjugation and chelation coordination between the active binding sites of the three-dimensional network structure and the pollutants, thereby improving the efficiency of the adsorption material and laying the foundation for its wide application in the field of photocatalytic synergistic adsorption.

Description

Technical Field

[0001] The present invention belongs to the technical field of functional materials, relates to a photocatalytic synergistic adsorption material, and specifically relates to a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, and a preparation method and application thereof. Background Art

[0002] With the acceleration of industrialization and the continuous growth of the population, environmental pollution is becoming increasingly serious. Water and soil pollution, in particular, have become global environmental issues. Heavy metal ions such as lead, mercury, and cadmium pose a significant threat to the environment and human health due to their high toxicity, strong bioaccumulation, and poor degradation. Therefore, the development of efficient, economical, and environmentally friendly heavy metal ion adsorption materials has become a research hotspot.

[0003] The rGO / ZnSn(OH)6 composite is a photocatalytic material with excellent performance, combining the excellent electron mobility and specific surface area of ​​reduced graphene oxide (rGO) with the photocatalytic performance of zinc hydroxystannate (ZnSn(OH)6). The composite material maintains the typical perovskite crystal structure of ZnSn(OH)6 with face-centered cubic stacking, which is beneficial for improving the material's stability and photocatalytic activity. Traditional photocatalysts have shown great potential in environmental governance and energy conversion, but they also have some shortcomings, such as a small number of surface active sites, insufficient adsorption capacity, poor stability, and high cost.

[0004] Metal-organic frameworks (MOFs) are a class of porous materials composed of metal ions and organic ligands connected by coordination bonds. They are widely used in wastewater treatment due to their high specific surface area, adjustable pore size and functionalized surface. However, traditional MOFs have poor stability in aqueous solutions, which limits their application in water treatment.

[0005] In summary, the development of a new nanostructured adsorption material that combines the advantages of rGO / ZnSn(OH)6 and ZIF-67 is of great significance for improving water treatment efficiency, enhancing material stability, photocatalytic activity and solving environmental pollution problems. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures and its preparation method and application, which has high stability, photocatalytic activity and excellent adsorption performance, and is used for sewage treatment or soil remediation to achieve efficient heavy metal adsorption and organic matter degradation. The preparation method is simple, the cost is low, and it can be used on a large scale.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A method for preparing a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure comprises the following steps:

[0009] Step 1: Weigh 10 to 20 parts of zinc acetate and 10 to 20 parts of tin tetrachloride by mass, dissolve them in 80 to 100 parts of water, and hydrothermally react at 85 to 95° C. for 8 to 10 hours. Separate the solid product, wash it, and dry it to obtain ZnSn(OH)6. Further, disperse ZnSn(OH)6 in 20 to 30 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A.

[0010] Weigh 0.5-0.8 parts of GO by weight and disperse it in 20-30 parts of water to obtain suspension B.

[0011] The suspension B was slowly added dropwise to the suspension A, and after irradiation with ultraviolet light for 0.5 to 1 hour, ultrasonic treatment was performed for 0.5 to 1 hour, stirring was performed for 2 to 3 hours, and the suspension was allowed to stand for 3 to 5 hours. The solid product was separated, washed, and dried to finally obtain the rGO / ZnSn(OH)6 composite material;

[0012] Step 2: Dissolve 3 to 5 parts of rGO / ZnSn(OH)6 and 1 to 3 parts of natural polysaccharide in 80 to 100 parts of 2% glacial acetic acid by mass, stir until uniformly mixed, add 1 to 2 parts of montmorillonite and 1 to 3 parts of potassium humate, and at the same time add 0.5 to 0.8 parts of porogen and 0.3 to 0.5 parts of surfactant, stir at a temperature of 40 to 50 ° C for 1 to 2 hours, and then add 1 to 2 parts of cross-linking agent to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0013] Step three, take 2-methylimidazole, cobalt nitrate hexahydrate, methanol and water in a mass ratio of (0.6-0.8): (0.4-0.6): (30-40): (20-30), stir until the solution is clear and uniform to obtain a mixed solution, add the preliminary adsorption gel prepared in step two to the mixed solution in a mass ratio of (50-75): (85-110), stir for 1-2 hours, and freeze-dry to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0014] The present invention also has the following technical features:

[0015] Preferably, the natural polysaccharide includes any one of carboxymethyl chitosan, chitosan oligosaccharide, hyaluronic acid, and gelatin.

[0016] Preferably, the porogen includes any one of sodium carbonate, sodium bicarbonate, polymethacrylate, and polyvinyl alcohol.

[0017] Preferably, the surfactant includes any one of sodium dodecylbenzenesulfonate, sodium stearate, and sodium oleate.

[0018] Preferably, the cross-linking agent includes any one of glutaraldehyde, eicosanedial, acrolein, and succinaldehyde.

[0019] Preferably, the stirring rate in step 2 and step 3 is 300-500 r / min.

[0020] The present invention also protects a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure prepared by the method described above, and its application in water treatment or soil remediation.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] The present invention uses amino-modified natural polysaccharides as raw materials to prepare primary gel, and through in-situ growth technology and hydrothermal synthesis method, reduces graphene oxide composite hydroxy zinc stannate structure to be loaded on the adsorption gel, thereby improving the mechanical strength and water stability of the composite material, not only can enhance the adsorption capacity of organic pollutants through π-π interaction, but also can photocatalytically degrade benzene and its homologues through photocatalytic synergistic adsorption, thereby realizing the concept of green and environmentally friendly treatment of pollutants; by adding montmorillonite and potassium humate, further enhance the exchange, adsorption and chelation effects with metal ions; adopt metal organic framework ZIF-67 porous material with good hydrothermal stability and rich pore structure, by Schiff base modification of ZIF-67, Schiff base modification can introduce more active sites, which can promote the adsorption of pollutant molecules. The adsorption and conversion of pollutants can be enhanced, thereby increasing the adsorption selectivity and affinity for specific metal ions; montmorillonite and potassium humate are introduced to combine with the adsorption gel loaded with reduced graphene oxide composite hydroxystannate zinc structure, and further cross-linked with the metal organic framework ZIF-67 porous material to form a stable porous three-dimensional network structure. At the same time, the conjugation and chelation coordination between the active binding sites of the three-dimensional network structure and the pollutants improve the efficiency of the adsorption material; by adding surfactants and porogens, the pores and pore density of the porous material can be increased, further improving its adsorption capacity, and finally preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure with high stability, photocatalytic activity and excellent adsorption performance, which can be used for sewage treatment or soil remediation to achieve efficient adsorption of heavy metals and degradation of organic pollutants;

[0023] The preparation method of the invention is simple, low in cost and can be used on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a diagram of the preparation mechanism of Example 1 of the present invention. DETAILED DESCRIPTION

[0025] The specific contents of the present invention are further explained in detail below with reference to the embodiments.

[0026] Example 1

[0027] This embodiment provides a method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures, including the following steps. The reaction mechanism is as follows: Figure 1 As shown:

[0028] Step 1: Weigh 10 parts of zinc acetate and 20 parts of tin tetrachloride by mass, dissolve them in 95 parts of water, and hydrothermally react at 85°C for 10 hours. Separate the solid product, wash it three times with distilled water, and dry it in an oven at 80°C for 10 hours to obtain ZnSn(OH)6, which is further dispersed in 25 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A; weigh 0.7 parts of GO and disperse it in 30 parts of water to obtain a suspension B; slowly add the suspension B dropwise to the suspension A, and after irradiating it with ultraviolet light for 1 hour, ultrasonicate it for 0.5 hours, stir it for 3 hours, and let it stand for 3 hours. Separate the solid product, wash it three times with distilled water, and dry it in an oven at 80°C for 10 hours to finally obtain the rGO / ZnSn(OH)6 composite material;

[0029] Step 2: Dissolve 4 parts of rGO / ZnSn(OH)6 and 3 parts of carboxymethyl chitosan in 90 parts of 2% glacial acetic acid by mass, stir thoroughly for 0.5h at a stirring rate of 300r / min, and add 2 parts of montmorillonite and 3 parts of potassium humate after mixing evenly. At the same time, add 0.8 parts of sodium carbonate and 0.3 parts of sodium dodecylbenzenesulfonate. After stirring at 50°C for 2h, add 1 part of eicosanedial to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0030] Step 3: Dissolve 2-methylimidazole and cobalt nitrate hexahydrate in a mixed solution of methanol and water, and stir until the solution is clear and uniform, wherein the mass ratios of 2-methylimidazole, nitric acid hexahydrate, methanol, and water are 0.7:0.5:30:25, respectively; at the same time, add the preliminary adsorption gel prepared in step 2, and the mass ratio of the mixed solution to the preliminary adsorption gel prepared in step 2 is 7:9. After stirring at a stirring rate of 500 r / min for 2 hours, freeze-dry for 24 hours to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0031] Example 2

[0032] This embodiment provides a method for preparing a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, comprising the following steps:

[0033] Step 1: Weigh 20 parts of zinc acetate and 15 parts of tin tetrachloride by mass, dissolve them in 85 parts of water, and hydrothermally react at 90°C for 10 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to obtain ZnSn(OH)6, which is further dispersed in 25 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A; weigh 0.8 parts of GO and disperse it in 20 parts of water to obtain a suspension B; slowly add the suspension B dropwise to the suspension A, and after irradiating it with ultraviolet light for 1 hour, ultrasonicate it for 0.5 hours, stir it for 3 hours, and let it stand for 3 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to finally obtain the rGO / ZnSn(OH)6 composite material;

[0034] Step 2: Dissolve 4 parts of rGO / ZnSn(OH)6 and 2 parts of chitosan oligosaccharide in 80 parts of 2% glacial acetic acid by mass, stir thoroughly at a stirring rate of 400 r / min, and add 2 parts of montmorillonite and 2 parts of potassium humate after mixing evenly. At the same time, add 0.5 parts of sodium bicarbonate and 0.4 parts of sodium stearate. After stirring at 40°C for 1 hour, add 2 parts of glutaraldehyde to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0035] Step 3: Dissolve 2-methylimidazole and cobalt nitrate hexahydrate in a mixed solution of methanol and water, and stir until the solution is clear and uniform, wherein the mass ratios of 2-methylimidazole, nitric acid hexahydrate, methanol, and water are 0.6:0.4:40:25, respectively; at the same time, add the preliminary adsorption gel prepared in step 2, and the mass ratio of the mixed solution to the preliminary adsorption gel prepared in step 2 is 50:85. After stirring at a stirring rate of 500 r / min for 2 hours, freeze-dry for 24 hours to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0036] Example 3

[0037] This embodiment provides a method for preparing a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, comprising the following steps:

[0038] Step 1: Weigh 15 parts of zinc acetate and 10 parts of tin tetrachloride by mass, dissolve them in 90 parts of water, and hydrothermally react at 90°C for 10 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to obtain ZnSn(OH)6, which is further dispersed in 25 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A; weigh 0.7 parts of GO and disperse it in 20 parts of water to obtain a suspension B; slowly add the suspension B dropwise to the suspension A, and after irradiating it with ultraviolet light for 1 hour, ultrasonicate it for 0.5 hours, stir it for 3 hours, and let it stand for 3 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to finally obtain the rGO / ZnSn(OH)6 composite material;

[0039] Step 2: Dissolve 4 parts of rGO / ZnSn(OH)6 and 3 parts of hyaluronic acid in 95 parts of 2% glacial acetic acid by mass, stir thoroughly at a stirring rate of 500r / min, and add 1 part of montmorillonite and 2 parts of potassium humate after mixing evenly. At the same time, add 0.6 parts of polymethacrylate and 0.5 parts of sodium oleate, stir at a temperature of 50°C for 2h, and then add 1 part of acrolein to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0040] Step 3: Dissolve 2-methylimidazole and cobalt nitrate hexahydrate in a mixed solution of methanol and water, and stir until the solution is clear and uniform, wherein the mass ratios of 2-methylimidazole, nitric acid hexahydrate, methanol, and water are 0.8:0.4:35:25, respectively; at the same time, add the preliminary adsorption gel prepared in step 2, and the mass ratio of the mixed solution to the preliminary adsorption gel prepared in step 2 is 75:110. After stirring at a stirring rate of 400 r / min for 2 hours, freeze-dry for 24 hours to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0041] Example 4

[0042] This embodiment provides a method for preparing a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, comprising the following steps:

[0043] Step 1: Weigh 15 parts of zinc acetate and 15 parts of tin tetrachloride by mass, dissolve them in 80 parts of water, and hydrothermally react at 90°C for 9 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to obtain ZnSn(OH)6, which is further dispersed in 20 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A; weigh 0.7 parts of GO and disperse it in 30 parts of water to obtain a suspension B; slowly add the suspension B dropwise to the suspension A, and after irradiating it with ultraviolet light for 0.8 hours, ultrasonicate it for 0.6 hours, stir it for 2.5 hours, let it stand for 4 hours, separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to finally obtain the rGO / ZnSn(OH)6 composite material;

[0044] Step 2: Dissolve 5 parts of rGO / ZnSn(OH)6 and 2 parts of gelatin in 100 parts of 2% glacial acetic acid by mass, stir thoroughly at a stirring rate of 300 r / min, and add 2 parts of montmorillonite and 2 parts of potassium humate after mixing evenly. At the same time, add 0.7 parts of polyvinyl alcohol and 0.5 parts of sodium oleate. After stirring at 45°C for 2 hours, add 1.5 parts of succinic dialdehyde to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0045] Step 3: Dissolve 2-methylimidazole and cobalt nitrate hexahydrate in a mixed solution of methanol and water, and stir until the solution is clear and uniform, wherein the mass ratios of 2-methylimidazole, nitric acid hexahydrate, methanol, and water are 0.7:0.5:35:30, respectively; at the same time, add the preliminary adsorption gel prepared in step 2, and the mass ratio of the mixed solution to the preliminary adsorption gel prepared in step 2 is 60:100. After stirring at a stirring rate of 400 r / min for 1 hour, freeze-dry for 24 hours to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0046] Example 5

[0047] This embodiment provides a method for preparing a high-performance photocatalytic synergistic adsorption material containing a ZIF-67 nanostructure, comprising the following steps:

[0048] Step 1: Weigh 18 parts of zinc acetate and 15 parts of tin tetrachloride by mass, dissolve them in 100 parts of water, and hydrothermally react at 95°C for 8 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to obtain ZnSn(OH)6, which is further dispersed in 30 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A; weigh 0.5 parts of GO and disperse it in 26 parts of water to obtain a suspension B; slowly add the suspension B dropwise to the suspension A, and after irradiating it with ultraviolet light for 0.5 hours, ultrasonicate it for 1 hour, stir it for 2 hours, and let it stand for 5 hours. Separate the solid product, wash it 3 times with distilled water, and dry it in an oven at 80°C for 10 hours to finally obtain the rGO / ZnSn(OH)6 composite material;

[0049] Step 2: Dissolve 3 parts of rGO / ZnSn(OH)6 and 1 part of carboxymethyl chitosan in 92 parts of 2% glacial acetic acid by mass, stir thoroughly at a stirring rate of 500 r / min, and add 1.5 parts of montmorillonite and 1 part of potassium humate after mixing evenly. At the same time, add 0.7 parts of sodium bicarbonate and 0.4 parts of sodium stearate. After stirring at 50°C for 1.5 hours, add 1 part of acrolein to form a preliminary adsorption gel containing a Schiff base structure through cross-linking;

[0050] Step 3: Dissolve 2-methylimidazole and cobalt nitrate hexahydrate in a mixed solution of methanol and water, and stir until the solution is clear and uniform, wherein the mass ratios of 2-methylimidazole, nitric acid hexahydrate, methanol, and water are 0.8:0.6:35:20, respectively; at the same time, add the preliminary adsorption gel prepared in step 2, and the mass ratio of the mixed solution to the preliminary adsorption gel prepared in step 2 is 60:110. After stirring at a stirring rate of 300 r / min for 1.5 hours, freeze-dry for 24 hours to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

[0051] In order to characterize the adsorption performance of the high-performance photocatalytic cooperative adsorption material containing ZIF-67 nanostructure, the adsorption effect and photocatalytic adsorption degradation of the high-performance photocatalytic cooperative adsorption material of ZIF-67 nanostructure synthesized in the embodiment were tested. The adsorbed methylene blue, rhodamine B, Pb 2+ The solution with an initial concentration of 200 mg / L and the solution with an initial concentration of 100 mg / L for phenol and benzene were placed in a constant temperature oscillating box at 298K, 308K and 318K for 300-350 min, centrifuged and allowed to stand for 30 min, and the absorbance of the supernatant was measured at 662 nm and 540 nm using a visible spectrophotometer. The removal rate after adsorption was calculated using formula (1):

[0052]

[0053] In formula (1), C0 and C e They represent the initial concentration and equilibrium concentration respectively, in mg / L; R is the removal rate at equilibrium.

[0054] Calculate the removal rate of each substance, as shown in Table 1:

[0055] Table 1 Removal rate of various pollutants by ZIF-67 nanostructured high-performance photocatalytic synergistic adsorption materials

[0056]

[0057] Under (500W) ultraviolet light irradiation, the photocatalytic removal rate of each substance was calculated. The results are shown in Table 2:

[0058] Table 2 Photocatalytic removal rate of various pollutants by ZIF-67 nanostructured high-performance photocatalytic synergistic adsorption materials

[0059]

[0060] The above data analysis shows that the high performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure prepared by the present invention has a great effect on the common sewage pollutants such as methylene blue, rhodamine B, and Pb 2+ The invention has a good adsorption removal rate. The adsorption amount of soil pollutants phenol and benzene is small. However, under the irradiation of ultraviolet light, due to the hydroxystannate composite reduced graphene structure contained in the adsorption material prepared by the invention, not only the adsorption performance is improved, but also the treatment capacity of soil pollutants phenol and benzene is greatly improved under the joint action of photocatalysis and adsorption. At the same time, the pollution problems of dyes and heavy metal ions in water bodies and the pollution problems of benzene and its homologues in coal mining soil are solved, and the concept of green and environmentally friendly treatment of pollutants is realized.

[0061] The above content is a further detailed description of the present invention, and it cannot be considered that the specific implementation methods of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection of the present invention determined by the submitted claims.

Claims

1. A method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures, characterized in that: The following steps are involved: Step 1: Weigh 10 to 20 parts of zinc acetate and 10 to 20 parts of tin tetrachloride by mass, dissolve them in 80 to 100 parts of water, and hydrothermally react at 85 to 95° C. for 8 to 10 hours. Separate the solid product, wash it, and dry it to obtain ZnSn(OH)6. Further, disperse ZnSn(OH)6 in 20 to 30 parts of hydrochloric acid solution with a pH of 4 to obtain a suspension A. Weigh 0.5-0.8 parts of GO by weight and disperse it in 20-30 parts of water to obtain suspension B. The suspension B was slowly added dropwise to the suspension A, and after irradiation with ultraviolet light for 0.5 to 1 hour, ultrasonic treatment was performed for 0.5 to 1 hour, stirring was performed for 2 to 3 hours, and the suspension was allowed to stand for 3 to 5 hours. The solid product was separated, washed, and dried to finally obtain the rGO / ZnSn(OH)6 composite material; Step 2: Dissolve 3 to 5 parts of rGO / ZnSn(OH)6 and 1 to 3 parts of natural polysaccharide in 80 to 100 parts of 2% glacial acetic acid by mass, stir until uniformly mixed, add 1 to 2 parts of montmorillonite and 1 to 3 parts of potassium humate, and at the same time add 0.5 to 0.8 parts of porogen and 0.3 to 0.5 parts of surfactant, stir at a temperature of 40 to 50 ° C for 1 to 2 hours, and then add 1 to 2 parts of cross-linking agent to form a preliminary adsorption gel containing a Schiff base structure through cross-linking; Step three, take 2-methylimidazole, cobalt nitrate hexahydrate, methanol and water in a mass ratio of (0.6-0.8): (0.4-0.6): (30-40): (20-30), stir until the solution is clear and uniform to obtain a mixed solution, add the preliminary adsorption gel prepared in step two to the mixed solution in a mass ratio of (50-75): (85-110), stir for 1-2 hours, and freeze-dry to obtain a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructure.

2. The method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures according to claim 1, wherein: The natural polysaccharide includes any one of carboxymethyl chitosan, chitosan oligosaccharide, hyaluronic acid and gelatin.

3. The method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures according to claim 1, wherein: The porogen includes any one of sodium carbonate, sodium bicarbonate, polymethacrylate and polyvinyl alcohol.

4. The method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures according to claim 1, wherein: The surfactant includes any one of sodium dodecylbenzenesulfonate, sodium stearate and sodium oleate.

5. The method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures according to claim 1, wherein: The cross-linking agent includes any one of glutaraldehyde, eicosanedial, acrolein, and succinaldehyde.

6. The method for preparing a high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures according to claim 1, wherein: The stirring rate in step 2 and step 3 is 300-500 r / min.

7. A high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures prepared by the method according to any one of claims 1 to 6.

8. Use of the high-performance photocatalytic synergistic adsorption material containing ZIF-67 nanostructures as claimed in claim 7 in water treatment or soil remediation.

Images