CN114453026B - MOFs sponge wastewater purification material and preparation method and application thereof - Google Patents
MOFs sponge wastewater purification material and preparation method and application thereof Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 76
- 238000000746 purification Methods 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 44
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- XMEVHPAGJVLHIG-FMZCEJRJSA-N chembl454950 Chemical group [Cl-].C1=CC=C2[C@](O)(C)[C@H]3C[C@H]4[C@H]([NH+](C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O XMEVHPAGJVLHIG-FMZCEJRJSA-N 0.000 claims description 11
- 229960004989 tetracycline hydrochloride Drugs 0.000 claims description 11
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- 238000000227 grinding Methods 0.000 claims description 6
- 239000002121 nanofiber Substances 0.000 claims description 6
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- 229940011182 cobalt acetate Drugs 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 claims description 3
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/1691—Coordination polymers, e.g. metal-organic frameworks [MOF]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The invention belongs to the technical field of composite materials, and particularly relates to a MOFs sponge wastewater purification material, a preparation method and application thereof. The preparation method of the MOFs sponge wastewater purification material comprises the following steps: and dispersing MOFs precursor powder on the surface of the sponge, performing hot pressing treatment, and performing microwave irradiation treatment to obtain the MOFs sponge wastewater purifying material. Compared with the existing soaking method and soaking growth method, the preparation method has the advantages of simplicity, convenience, practicability, high efficiency, safety, environmental protection, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a MOFs sponge wastewater purification material, a preparation method and application thereof.
Background
The persulfate advanced oxidation technology has important application value in the field of wastewater treatment due to the advantages of high efficiency, lasting stability and the like of the reaction. As a novel catalyst, metal organic framework Materials (MOFs) have been widely studied and paid attention to the treatment of wastewater by catalytically activating persulfate due to their characteristics of large specific surface area, high porosity, many reactive sites, and the like. However, MOFs material mainly exists in a powder form, and the problems of difficult separation, easy secondary pollution and the like exist in the practical application process, so that the wastewater treatment cost is increased.
The above-described difficulties can be addressed to some extent by compounding MOFs materials with some substrates. Composites of MOFs/textiles, MOFs/screens, MOFs/films, MOFs/nanofibers, etc. have been developed. However, the pore structure of these composite substrates is relatively small, often resulting in low actual loadings; in addition, in the wastewater treatment process, the MOFs composite material is often influenced by water flow impact, and the structural collapse of the base material is easy to occur, so that the practical application of the MOFs composite material in wastewater treatment is influenced.
The material with three-dimensional body type structure such as sponge and foam is selected to be compounded with MOFs, so that more load space can be increased for MOFs particles, and the internal multi-stage pore structure can effectively promote the circulation of wastewater and enhance mass transfer capacity, thereby remarkably improving the wastewater treatment efficiency. Patent CN201810824003.5 discloses a preparation method of MOFs-foam metal composite adsorbent; patent CN202011056571.9 discloses a preparation method, a product and application of an ultra-stable MOFs-based porous sponge; a ZIF-67/melamine sponge for oil-water separation is reported in the document "Facile preparation of ZIF-67coated melamine sponge for efficient oil/water separation" (see Industrial & Engineering Chemistry Research (2019) 17380-17388). The method generally comprises the steps of dispersing a synthesized MOFs material in water or an organic solvent to obtain a suspension, and then soaking and drying the suspension through a sponge to obtain the MOFs sponge material, wherein the composite material prepared by the method has the problems of poor dispersibility of MOFs particles, low loading capacity and the like, and is easy to fall off in the use process due to the lack of interaction between MOFs and the sponge.
Patent CN201910269499.9 discloses a MOFs/sponge composite material, and a preparation method and application thereof; patent CN201910329595.8 discloses a sponge composite metal organic framework material for adsorptive separation. These methods generally prepare a precursor solution of MOFs first, then soak the sponge in the precursor solution, and then undergo repeated in-situ growth reactions at a certain temperature to obtain MOFs/sponge composites. Although the method can improve the loading capacity of MOFs particles, the method also has the problems of long reaction time, large solvent consumption, complex process flow and the like.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a MOFs sponge wastewater purification material and a preparation method and application thereof. The preparation method of the MOFs sponge wastewater purification material can at least solve/alleviate one of the problems.
In order to achieve the above object, the present invention provides the following technical solutions: the preparation method of the MOFs sponge wastewater purification material comprises the following steps: and dispersing MOFs precursor powder on the surface of the sponge, performing hot pressing treatment, and performing microwave irradiation treatment to obtain the MOFs sponge wastewater purifying material.
Preferably, the MOFs precursor powder is prepared by uniformly mixing and grinding the organic ligand and the metal salt.
Preferably, the organic ligand is at least one of 2-methylimidazole, trimesic acid and 2-amino terephthalic acid.
Preferably, the metal salt is at least one of cobalt acetate, copper acetate and ferric chloride.
More preferably, the mass ratio of the organic ligand to the metal salt is 1 (0.2 to 1).
Preferably, the sponge is at least one of polyurethane sponge, melamine sponge, styrene-butadiene rubber sponge, nitrile rubber sponge and nanofiber sponge.
Preferably, the mass ratio of the MOFs precursor powder to the sponge is 1 (0.5-2).
Preferably, the hot pressing treatment specifically comprises: and hot-pressing for 5-15 min at 100-180 deg.c and 0.5-3 MPa.
Preferably, the microwave irradiation treatment specifically includes: and under the condition of 500-1500W of power, carrying out microwave irradiation treatment for 1-5 min.
The invention also provides a MOFs sponge wastewater purification material, which adopts the following technical scheme: the MOFs sponge wastewater purification material is prepared by adopting the preparation method.
Preferably, the MOFs particle size in the MOFs sponge wastewater purification material is 50-500 nm, and the porosity of the MOFs sponge wastewater purification material is more than or equal to 90%.
The invention also provides application of the MOFs sponge wastewater purification material, which adopts the following technical scheme: the MOFs sponge wastewater purification material is applied to organic pollutant purification.
Preferably, the organic contaminant is tetracycline hydrochloride.
The beneficial effects are that: the MOFs precursor powder is subjected to hot pressing treatment and microwave irradiation treatment to realize in-situ synthesis and effective load of MOFs particles in the sponge, and compared with the existing soaking method and the existing soaking growth method, the method has the advantages of simplicity, convenience, easiness, high efficiency, safety, environmental friendliness, low cost and the like.
The invention promotes the rapid synthesis of MOFs and enhances the interaction between MOFs and a sponge carrier through microwave irradiation treatment, and can effectively solve/alleviate the defects that MOFs powder particles are difficult to separate and easy to run off.
In the MOFs sponge wastewater purification material, MOFs loading capacity is large, and the product has high porosity, stable structure and good catalytic activity.
The MOFs sponge wastewater purification material can be matched with potassium peroxymonosulphonate for degrading organic pollutants, wherein the potassium peroxymonosulphonate is used as a precursor to provide a source of sulfate radicals, so that the implementation of persulfate advanced oxidation reaction is ensured. The reaction principle is as follows: the MOFs sponge wastewater purification material of the invention contains abundant transition metal coordination sites (such as Co 2+ 、Cu 2+ 、Fe 2+ ) The potassium peroxomonosulphonate can be activated to break O-O bond in the potassium peroxomonosulphonate, and generate sulfate radical with strong oxidability, which further oxidizes tetracycline hydrochloride in water to degrade the tetracycline hydrochloride.
The MOFs sponge wastewater purification material can realize rapid degradation of organic pollutants in wastewater under a high-flux condition, and has good circulation stability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. Wherein:
FIG. 1 is a schematic diagram of a preparation method of MOFs sponge wastewater purification material provided by an embodiment of the invention;
fig. 2 is an optical photograph and SEM photograph of the MOFs sponge waste water purifying material provided in the embodiment of the present invention; among them, fig. 2a is an optical photograph of the MOFs sponge waste water purifying material prepared in example 1, and fig. 2b is an SEM photograph of the MOFs sponge waste water purifying material prepared in example 1.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
The present invention will be described in detail with reference to examples. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
Aiming at the problems of long reaction time, large solvent consumption, complex process flow and the like existing in the prior art when MOFs materials are loaded on a sponge matrix, the invention provides a preparation method of MOFs sponge wastewater purification materials.
The preparation method of the MOFs sponge wastewater purification material adopts the following technical scheme: the preparation method of the MOFs sponge wastewater purification material comprises the following steps: and dispersing MOFs precursor powder on the surface of the sponge, performing hot pressing treatment, and performing microwave irradiation treatment to obtain the MOFs sponge wastewater purifying material.
The preparation method of the MOFs sponge wastewater purification material (in-situ hot pressing-microwave irradiation deposition method) comprises the following steps: firstly, dispersing MOFs precursor powder on the surface of a sponge, and then heating the MOFs precursor powder and the sponge under the extrusion action; at this time, the organic ligand in MOFs precursor powder is heated and melted, and the organic ligand is brought into metal ions to permeate into the sponge under the extrusion action, so that the organic ligand is fully contacted with the supporting framework inside the sponge; and then, carrying out irradiation treatment on the sponge by adopting high-frequency microwaves, wherein the generated microwave energy is quickly transferred into the sponge and is absorbed by the porous sponge and then converted into heat energy, so that the temperature in the sponge is quickly increased, organic ligands and metal ions are quickly nucleated and crystallized to form MOFs particles under the drive of heat, and in addition, the microwave irradiation can induce the cross-linking between the sponge and the MOFs, so that the MOFs are firmly attached to the inner skeleton of the sponge, and finally, the stable MOFs sponge wastewater purifying material is obtained.
As a further optimization of the above preparation method, the MOFs precursor powder is prepared by uniformly mixing and grinding the organic ligand and the metal salt.
As a further optimization of the preparation method, the mass ratio of the organic ligand to the metal salt is 1 (0.2-1); for example, the mass ratio of organic ligand to metal salt is 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, or 1:1.
As a further optimization of the above preparation method, the organic ligand is at least one of 2-methylimidazole, trimesic acid and 2-amino terephthalic acid.
As a further optimization of the above preparation method, the metal salt is at least one of cobalt acetate, copper acetate and ferric chloride.
As a further optimization of the above preparation method, the sponge is at least one of polyurethane sponge, melamine sponge, styrene-butadiene rubber sponge, nitrile rubber sponge and nanofiber sponge.
As a further optimization of the above preparation method, the mass ratio of the MOFs precursor powder to the sponge is 1 (0.5-2); for example, the mass ratio of MOFs precursor powder to sponge is 1:0.5, 1:0.8, 1:1, 1:1.2, 1:1.4, 1:1.6, 1:1.8, or 1:2.
As a further optimization of the above preparation method, the hot pressing treatment is: the heat press treatment is performed for 5 to 15 minutes (e.g., 5 minutes, 8 minutes, 10 minutes, 12 minutes, or 15 minutes) at a temperature of 100 to 180 ℃ (e.g., 100 ℃, 120 ℃, 140 ℃, 160 ℃, or 180 ℃) and a pressure of 0.5 to 3MPa (e.g., 0.5MPa, 1MPa, 1.5MPa, 2MPa, 2.5MPa, or 3 MPa).
As a further optimization of the above preparation method, the microwave irradiation treatment is: the microwave irradiation treatment is performed for 1 to 5 minutes (e.g., 1 minute, 2 minutes, 3 minutes, 4 minutes, or 5 minutes) at a power of 500 to 1500W (e.g., 500W, 800W, 1000W, 1200W, or 1500W).
The invention also provides a MOFs sponge wastewater purification material, which is prepared by adopting the preparation method.
As a further optimization of the preparation method, the MOFs particle size in the MOFs sponge wastewater purification material is 50-500 nm (for example, 50nm, 100nm, 200nm, 300nm, 400nm or 500 nm), and the porosity of the MOFs sponge wastewater purification material is more than or equal to 90%.
The invention also provides application of the MOFs sponge wastewater purification material: the MOFs sponge wastewater purification material is applied to organic pollutant purification.
As a further optimization of the above preparation method, the organic contaminant is tetracycline hydrochloride.
Preferably, when the MOFs sponge wastewater purification material of the invention is used for purifying tetracycline hydrochloride in wastewater, if the wastewater flux is 1000-5000 L.m -2 ·h -1 The MOFs sponge wastewater purification material has 65-97% of degradation efficiency on organic pollutant tetracycline hydrochloride.
The MOFs sponge wastewater purification material and the preparation method thereof of the present invention are described in detail by way of specific examples.
In the following examples: the experimental raw materials are mainly from Alatine or milin reagent
Example 1
The particle size of MOFs in the MOFs sponge wastewater purification material of this example was 220nm, and the porosity of the MOFs sponge wastewater purification material of this example was 95%.
The preparation method of the MOFs sponge wastewater purification material comprises the following steps:
(1) MOFs precursor powder preparation
The organic ligand 2-methylimidazole and the metal salt cobalt acetate are mixed according to the mass ratio of 1:0.5, mixing, and then grinding uniformly by using a mortar to prepare MOFs precursor powder;
(2) MOFs sponge preparation
Dispersing MOFs precursor powder obtained in the step (1) on the surface of a melamine sponge, wherein the mass ratio of the MOFs precursor powder to the melamine sponge is 1:0.5, and then carrying out hot pressing treatment for 12min under the conditions that the temperature is 160 ℃ and the pressure is 2.5 MPa; and then carrying out microwave irradiation treatment for 3min under the condition of 1000W of power, and finally obtaining the MOFs sponge wastewater purification material.
Example 2
The particle size of MOFs in the MOFs sponge wastewater purification material of this example was 500nm, and the porosity of the MOFs sponge wastewater purification material of this example was 90%.
The preparation method of the MOFs sponge wastewater purification material comprises the following steps:
(1) MOFs precursor powder preparation
The organic ligand trimesic acid and the metal salt copper acetate are mixed according to the mass ratio of 1:1, mixing, and then grinding uniformly by using a mortar to prepare MOFs precursor powder;
(2) MOFs sponge preparation
Dispersing MOFs precursor powder obtained in the step (1) on the surface of a polyurethane sponge, wherein the mass ratio of the MOFs precursor powder to the polyurethane sponge is 1:1, then carrying out hot pressing treatment for 15min under the conditions of 180 ℃ and 3 MPa; and then carrying out microwave irradiation treatment for 5min under the condition of 1500W of power, and finally obtaining the MOFs sponge wastewater purification material.
Example 3
The particle size of MOFs in the MOFs sponge wastewater purification material of this example was 50nm, and the porosity of the MOFs sponge wastewater purification material of this example was 93%.
The preparation method of the MOFs sponge wastewater purification material comprises the following steps:
(1) MOFs precursor powder preparation
The organic ligand 2-amino terephthalic acid and metal salt ferric chloride are mixed according to the mass ratio of 1:0.2, and then grinding uniformly by using a mortar to prepare MOFs precursor powder;
(2) MOFs sponge preparation
Dispersing MOFs precursor powder obtained in the step (1) on the surface of a nanofiber sponge, wherein the mass ratio of the MOFs precursor powder to the nanofiber sponge is 1:2, then carrying out hot pressing treatment for 5min under the conditions of 100 ℃ and 0.5 MPa; and then carrying out microwave irradiation treatment for 1min under the condition of 500W of power, and finally obtaining the MOFs sponge wastewater purification material of the embodiment.
Comparative example 1
This comparative example differs from the preparation method of the MOFs sponge waste water purification material of example 1 only in that: after hot pressing, a microwave irradiation treatment process is not adopted, and other parameters are the same as those in the embodiment 1, and are not repeated.
In comparison with example 1, the composite sponge material obtained in comparative example 1 has only a small amount of MOFs on the surface of the inner frame, and has the phenomenon of uneven MOFs loading. This is mainly because if only the hot pressing treatment is used instead of the subsequent microwave irradiation treatment, it is difficult to rapidly transfer heat to the inside of the sponge material, resulting in a lower inside temperature of the sponge material than the outside temperature, which is disadvantageous for the generation of the inside MOFs particles, and thus results in a problem of poor uniformity of the loading of MOFs in the sponge composite.
Comparative example 2
This comparative example differs from the preparation method of the MOFs sponge waste water purification material of example 1 only in that: the mass ratio of MOFs precursor powder to melamine sponge is 1:0.3, and other parameters are the same as those in example 1, and will not be described again.
The particle size of MOFs in the final prepared MOFs sponge wastewater purification material is 680nm, the porosity of the MOFs sponge wastewater purification material is 85%, the MOFs particles have obvious agglomeration phenomenon, and the flux is 2500 L.m -2 ·h -1 When the organic pollutant degradation efficiency is 69.3 percent. As can be seen by comparison with example 1, the mass ratio of MOFs precursor powder to sponge is too high, so that the MOFs particles generated by the hot-pressing-microwave irradiation are too large in size, thereby generating a significant agglomeration phenomenon, and finally resulting in a reduction in catalytic activity.
Experimental example
The experimental steps of the MOFs sponge wastewater purification material for wastewater purification are as follows:
(1) Tetracycline hydrochloride is selected as an organic pollutant, dissolved in water, prepared into 200mL of reactant (tetracycline hydrochloride) solution with the concentration of 20mg/L, and then added with 20mg of potassium peroxomonosulphonate to the reaction system, and stirred for 10min.
Remarks: the potassium peroxomonosulphonate serves as a precursor to provide a source of sulphate radicals, thus ensuring the performance of the peroxodisulphate advanced oxidation reaction. The reaction principle is as follows: the MOFs sponge wastewater purification material of the invention contains abundant transition metal coordination sites (such as Co 2+ 、Cu 2+ 、Fe 2+ ) The potassium peroxomonosulphonate can be activated to break O-O bond in the potassium peroxomonosulphonate, and generate sulfate radical with strong oxidability, which further oxidizes tetracycline hydrochloride in water to degrade the tetracycline hydrochloride.
(2) Cutting the synthesized MOFs sponge wastewater purification material into a volume of 5X 5cm 3 And then fixing the reaction solution in a sand mold funnel, conveying the prepared reaction solution into the sand mold funnel according to different treatment fluxes, and finally obtaining the final degradation rate according to the concentration of the reactant solution after the MOFs sponge wastewater purification material is measured.
The degradation performance of the MOFs sponge wastewater purification materials of examples 1-3 and comparative examples 1-2 was measured under different wastewater treatment flux conditions, and the results were as follows:
the wastewater treatment flux is 1000 L.m -2 ·h -1 The degradation performance test results are shown in table 1 below:
TABLE 1
| Sample of | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Degradation rate | 96.8％ | 95.2％ | 96.6％ | 80.1％ | 79.5％ |
The wastewater treatment flux is 2500 L.m -2 ·h -1 The degradation performance test results are shown in table 2 below:
TABLE 2
| Sample of | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Degradation rate | 91.5％ | 85.3％ | 89.7％ | 72.5％ | 69.3％ |
The wastewater treatment flux is 5000 L.m -2 ·h -1 The degradation performance test results are shown in table 3 below:
TABLE 3 Table 3
| Sample of | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Degradation rate | 88.6％ | 80.2％ | 83.4％ | 67.8％ | 66.5％ |
To sum up:
(1) The hot-pressing-microwave irradiation deposition method adopted by the invention realizes the in-situ synthesis and effective load of MOFs on the sponge carrier, and the MOFs has controllable particle size and large and uniform load. The microwave irradiation treatment promotes the rapid synthesis of MOFs in the sponge frame, enhances the interaction between the MOFs and the sponge carrier, and solves the defects that MOFs powder particles are difficult to separate and easy to run off. In addition, compared with the existing soaking method and soaking growth method, the method has the advantages of simplicity, convenience, easiness in operation, high efficiency, safety, environment friendliness, low cost and the like.
(2) The MOFs sponge wastewater purification material prepared by the invention has the characteristics of high porosity, high MOFs load, stable structure and the like, can realize the purification treatment of high-flux wastewater without illumination and room temperature, has the advantages of high degradation rate, high degradation rate and the like, and has wide application prospect in the field of water purification.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The preparation method of the MOFs sponge wastewater purification material is characterized by comprising the following steps of: dispersing MOFs precursor powder on the surface of a sponge, performing hot-pressing treatment, and performing microwave irradiation treatment to obtain the MOFs sponge wastewater purification material;
the MOFs precursor powder is prepared by uniformly mixing and grinding an organic ligand and a metal salt;
the organic ligand is at least one of 2-methylimidazole, trimesic acid and 2-amino terephthalic acid;
the metal salt is at least one of cobalt acetate, copper acetate and ferric chloride;
the mass ratio of the organic ligand to the metal salt is 1 (0.2-1);
the mass ratio of MOFs precursor powder to sponge is 1 (0.5-2);
the hot pressing treatment specifically comprises the following steps: performing hot pressing treatment for 5-15 min under the conditions that the temperature is 100-180 ℃ and the pressure is 0.5-3 MPa;
the microwave irradiation treatment specifically comprises the following steps: and (3) carrying out microwave irradiation treatment for 1-5 min under the condition of the power of 500-1500W.
2. The method for preparing a MOFs sponge waste water purifying material according to claim 1, wherein the sponge is at least one of polyurethane sponge, melamine sponge, styrene-butadiene rubber sponge, nitrile rubber sponge and nanofiber sponge.
3. The MOFs sponge wastewater purification material is characterized in that the MOFs sponge wastewater purification material is prepared by the preparation method of claim 1 or 2.
4. The MOFs sponge waste water purifying material according to claim 3, wherein the particle size of MOFs in the MOFs sponge waste water purifying material is 50-500 nm, and the porosity of the MOFs sponge waste water purifying material is more than or equal to 90%.
5. The use of MOFs sponge wastewater purification material according to claim 3 or 4 in organic pollutant purification,
the organic pollutant is tetracycline hydrochloride.
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| CN102224263A (en) * | 2009-03-31 | 2011-10-19 | Iop颜料厂有限公司 | A process for producing sponge iron |
| CN113231100A (en) * | 2021-06-17 | 2021-08-10 | 海南大学 | Preparation method of covalent organic framework sponge composite material, obtained product and application of product in photocatalytic degradation of antibiotics |
| CN113747969A (en) * | 2019-02-12 | 2021-12-03 | 智能材料印刷有限公司 | Mechanochemical method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102224263A (en) * | 2009-03-31 | 2011-10-19 | Iop颜料厂有限公司 | A process for producing sponge iron |
| CN113747969A (en) * | 2019-02-12 | 2021-12-03 | 智能材料印刷有限公司 | Mechanochemical method |
| CN113231100A (en) * | 2021-06-17 | 2021-08-10 | 海南大学 | Preparation method of covalent organic framework sponge composite material, obtained product and application of product in photocatalytic degradation of antibiotics |
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Application publication date: 20220510 Assignee: DONGTAI GAOKE TECHNOLOGY INNOVATION PARK Co.,Ltd. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2024980001259 Denomination of invention: A MOF sponge wastewater purification material and its preparation method and application Granted publication date: 20230509 License type: Common License Record date: 20240123 |