CN118085354A - MgZnO-PVDF film of composite polymer degradation material, and preparation method and application thereof - Google Patents
MgZnO-PVDF film of composite polymer degradation material, and preparation method and application thereof Download PDFInfo
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- 239000002033 PVDF binder Substances 0.000 title claims abstract description 92
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 92
- 239000000463 material Substances 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000012667 polymer degradation Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000004098 Tetracycline Substances 0.000 claims abstract description 42
- 235000019364 tetracycline Nutrition 0.000 claims abstract description 42
- 150000003522 tetracyclines Chemical class 0.000 claims abstract description 42
- 229960002180 tetracycline Drugs 0.000 claims abstract description 40
- 229930101283 tetracycline Natural products 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- HNPPKZRZKDKXDO-UHFFFAOYSA-N n,n-dimethylformamide;propan-2-one Chemical compound CC(C)=O.CN(C)C=O HNPPKZRZKDKXDO-UHFFFAOYSA-N 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012295 chemical reaction liquid Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 239000002585 base Substances 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 33
- 230000015556 catabolic process Effects 0.000 abstract description 28
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 24
- 239000011521 glass Substances 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 229940088710 antibiotic agent Drugs 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 229940040944 tetracyclines Drugs 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 description 1
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- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a composite polymer degradation material MgZnO-PVDF film, a preparation method and application thereof, and relates to the technical field of polymer materials. The method comprises the following steps: (1) preparing MgZnO powder at high pressure and high temperature; (2) preparing MgZnO-PVDF film casting solution; (3) Pouring MgZnO-PVDF film casting solution on the surface of a special die, forming by using an interface film forming method and drying. According to the invention, mgZnO with degradation performance and PVDF widely applied are compounded to prepare the MgZnO-PVDF film, so that the material itself increases the piezoelectric performance of PVDF, the degradation performance of MgZnO to tetracycline is obviously improved, and the composite polymer degradation material with higher quality is obtained. Compared with other film degradation materials, the composite polymer degradation material MgZnO-PVDF has the advantages of low cost, no pollution and good performance, and can be well adapted to various water environments.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a composite high polymer degradation material MgZnO-PVDF film, a preparation method and application thereof.
Background
Currently, antibiotics, particularly tetracyclines, are widely used in human and animal health care. However, the large amount of tetracyclines continues to be discharged into the environment without adequate relief measures, resulting in an ever-increasing and alarming accumulation, causing significant environmental and human health hazards due to their inherent chemical stability and resistance to spontaneous degradation.
Compared with other degradation materials, the combination of magnesium element and zinc oxide, which is a traditional degradation material, greatly improves the adsorption and degradation performances of the composite material on tetracycline. On the basis, mgZnO and PVDF are mixed, so that the characteristic high molecular compound property of PVDF provides piezoelectric performance for the composite degradable material, and the gap of the piezoelectric degradable material is greatly filled. MgZnO-PVDF can have important influence on the degradation of tetracycline in water environment by means of adsorption-piezoelectric degradation combination, and effectively remove the tetracycline in aquatic environment.
Disclosure of Invention
The MgZnO-PVDF film of the composite polymer degradation material, the preparation method and the application thereof can effectively solve the problems of the void and the deficiency of the adsorption degradation material of the tetracycline in the water environment, fill the gap and improve the adsorption performance and the piezoelectric degradation performance for removing the tetracycline.
In order to achieve the technical purpose, the invention mainly adopts the following technical scheme:
in a first aspect, the invention discloses a preparation method of a composite polymer degradation material MgZnO-PVDF film, which comprises the following steps:
(1) Preparing MgZnO powder at high pressure and high temperature;
(2) Preparing MgZnO-PVDF film casting solution;
(3) Pouring MgZnO-PVDF film casting solution on the surface of a special die, forming by using an interface film forming method and drying.
In a preferred embodiment of the present invention, in step (1), the method for preparing MgZnO powder is:
step 1.1, carrying out double decomposition reaction on magnesium-containing inorganic metal salt, zinc-containing inorganic metal salt and strong alkali to obtain reaction liquid;
And 1.2, transferring the reaction liquid into a high-pressure reaction kettle, heating to a set temperature, maintaining for a period of time, naturally cooling, washing a prepared sample, centrifuging, drying and grinding to obtain MgZnO powder.
Further, in step 1.1, the inorganic metal salt containing magnesium is MgSO 4·7H2 0; the zinc-containing inorganic metal salt is ZnSO 4·7H2 O; the strong base is NaOH solution.
Preferably, the molar ratio of the MgSO 4·7H2 0 to the ZnSO 4·7H2 O is 1:50, the concentration of the NaOH solution is 10mol/L.
In step 1.2, the pressure of the high-pressure reaction kettle is 3Mpa, the temperature is raised to 150 ℃ and kept for 5 hours, then the high-pressure reaction kettle is naturally cooled, and is dried at 60 ℃ after being respectively washed and centrifuged by deionized water and absolute ethyl alcohol.
In another preferred embodiment of the present invention, in the step (2), the method for preparing the MgZnO-PVDF film casting solution comprises:
and adding PVDF and MgZnO powder into the DMF-acetone mixed solution in batches, and placing the mixture on a constant-temperature magnetic stirring heating sleeve until the mixture is dissolved, thus obtaining the casting film liquid.
Further, the mass ratio of PVDF to MgZnO powder is 1:1; the volume ratio of DMF to acetone in the DMF-acetone mixed solution is 7:3, and the stirring and heating conditions are as follows: stirring and heating at 1020rpm and 20 ℃ until dissolving, and stirring for 2 hours after dissolving.
In another preferred embodiment of the present invention, in the step (3), after pouring the MgZnO-PVDF film casting solution onto the surface of the special mold, the film is stretched until the surface liquid film is uniform and flat, then the entire mold is immersed in clear water, and after the film casting solution is completely solidified on the surface, the film is rapidly drawn out, sent into an oven for baking, and after baking, the surface film is peeled off, thereby obtaining the MgZnO-PVDF film.
In a second aspect, the invention discloses a composite polymer degradation material MgZnO-PVDF film prepared by the preparation method in the first aspect.
In a third aspect, the invention discloses an application of the composite polymer degradation material MgZnO-PVDF film in the second aspect in adsorbing and/or degrading tetracycline.
Compared with the prior art, the invention has the following beneficial effects:
1. The degradation material is based on the improvement of the strong degradation performance of magnesium element and zinc oxide on antibiotics, mgZnO powder is synthesized, so that the MgZnO powder has the degradation performance which is stronger than the superposition of the degradation performance of the magnesium element and the zinc oxide, and simultaneously, the degradation material adopts PVDF as a carrier, so that the flexibility, the low toxicity and the piezoelectric effect of the PVDF are emphasized, and the MgZnO-PVDF film with the strong adsorption capacity and the piezoelectric degradation performance is synthesized.
2. The MgZnO-PVDF film of the composite polymer degradation material has strong adsorption performance in the tetracycline solution with the concentration of 10mg/L, wherein the removal rate of the MgZnO-PVDF film to the tetracycline can reach 65% after two hours of adsorption.
3. The MgZnO-PVDF film of the composite polymer degradation material has strong piezoelectric property in tetracycline solution with the concentration of 10mg/L, wherein the MgZnO-PVDF film is subjected to ultrasonic treatment after standing and adsorption for two hours, the MgZnO-PVDF film is subjected to piezoelectric degradation on the tetracycline under the influence of ultrasonic waves, and the adsorption-degradation combined removal rate of the MgZnO-PVDF film on the tetracycline after two hours can reach 86%.
4. The MgZnO-PVDF film of the composite polymer degradation material of the invention adsorbs and degrades the tetracycline in water environment with pH value of 4-10, and the total removal rate of the final MgZnO-PVDF film to the tetracycline is kept at about 85%.
5. The MgZnO-PVDF film of the composite polymer degradation material is respectively placed in five water environments of deionized water, tap water, pond water, kitchen waste water and lake water to adsorb and degrade the tetracycline, and the total removal rate of the MgZnO-PVDF film to the tetracycline is maintained to be 80% or more.
Drawings
FIG. 1 is an SEM image of MgZnO-PVDF film.
FIG. 2 is a graph showing the change in removal rate of MgZnO-PVDF film after undergoing stationary adsorption-piezoelectric degradation application.
FIG. 3 is a graph showing the comparison of adsorption performance of MgZnO-PVDF film on tetracycline solution with concentration of 10mg/L at different pH values.
FIG. 4 is a graph showing the comparison of adsorption performance of MgZnO-PVDF film to a tetracycline solution having a concentration of 10mg/L under different water environments.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto. The raw materials related to the invention can be directly purchased from the market. For process parameters not specifically noted, reference may be made to conventional techniques.
Example 1
The embodiment provides a preparation method of a composite polymer degradation material MgZnO-PVDF film, which adopts a three-step method and comprises the following steps:
1) Preparation of MgZnO powder
5Mmol of zinc sulfate heptahydrate (ZnSO 4·7H2 O) was dissolved in 35mL of absolute ethanol, and 0.1mmol of magnesium sulfate heptahydrate (MgSO 4·7H2 O) was added to the solution. The mixed solution is placed on a constant temperature magnetic heating stirring sleeve to be stirred and dissolved at 1020rpm and 20 ℃ for 2 hours. And 1.5mL of NaOH solution (10 mol/L, transparent solution) prepared in advance was rapidly injected while stirring, and the excess was used. The above mixed liquid was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the temperature was raised to 150℃for 5 hours. And after natural cooling, washing and centrifuging the prepared sample by deionized water and absolute ethyl alcohol respectively, and drying and grinding at 60 ℃ to obtain MgZnO powder.
2) Preparing MgZnO-PVDF film casting solution
0.6GPVDF, and 0.6gMgZnO particles were added in portions to 10ml of DMF-acetone mixed solution (volume ratio 7:3) to prepare casting solution, and placed on a constant temperature magnetic stirring heating mantle until dissolved, 10200 rpm,20 ℃.
3) Preparation of MgZnO-PVDF film
Stirring was continued for another 2 hours after dissolution, and about 1.5mL of the casting solution was poured onto a special mold surface having an outer diameter of about 28 mm. Extending to the surface liquid film to be even and smooth, immersing the whole die in clean water, and quickly drawing out the die after the casting film liquid is completely solidified on the surface, and sending the die into an oven for baking at 80 ℃ for 20 minutes. And (5) removing the surface film after drying to obtain the MgZnO-PVDF film.
Example 2
The embodiment provides an application of a composite polymer degradation material MgZnO-PVDF film, which comprises the following steps:
1) Preparation of the reaction System
20ML of the tetracycline solution having a concentration of 10mg/L was placed in a 20 mL-volume glass bottle. And (3) washing the MgZnO-PVDF film with deionized water to remove impurities on the surface of the MgZnO-PVDF film, and putting the MgZnO-PVDF film into a prepared glass bottle.
2) Standing and adsorbing
The prepared glass bottle is placed in a dark environment and is kept stand for adsorption for 2 hours.
3) Piezoelectric degradation
And placing the glass bottle subjected to standing and adsorption in an ultrasonic cleaner, and performing ultrasonic piezoelectric oscillation for 2 hours.
4) Testing and computing
Respectively testing the absorbance of three time periods after piezoelectric degradation after standing and adsorbing before reaction by an ultraviolet-visible light spectrophotometer, and according to the formula:
and calculating the removal rate of the MgZnO-PVDF film to the tetracycline.
The results are shown in FIG. 2. As can be seen from FIG. 2, the MgZnO-PVDF film of the composite polymer degradable material has strong adsorption performance in the tetracycline solution with the concentration of 10mg/L, wherein the removal rate of the MgZnO-PVDF film on the tetracycline can reach 65% after adsorption for two hours, and the MgZnO-PVDF film of the composite polymer degradable material has strong piezoelectric performance in the tetracycline solution with the concentration of 10mg/L, wherein after standing and adsorption for two hours, the MgZnO-PVDF film is subjected to ultrasonic waves, and under the influence of the ultrasonic waves, the MgZnO-PVDF film is subjected to piezoelectric degradation on the tetracycline through piezoelectric effect, and the adsorption-degradation combined removal rate of the MgZnO-PVDF film on the tetracycline can reach 86% after two hours.
In addition, in order to ensure the applicability of the MgZnO-PVDF film which is the composite polymer degradation material, adsorption-degradation experiments of the MgZnO-PVDF film in aqueous solutions with pH of 4-10 and different water environments are also carried out. The experimental procedure was as follows:
1) Preparation of the reaction System
A solution of tetracycline at a concentration of 10mg/L and a pH of 4-10, respectively, was placed in 20mL glass vials. And respectively taking 20 mg of MgZnO-PVDF film, washing with deionized water to remove impurities on the surface, and then putting the film into a prepared glass bottle.
2) Standing and adsorbing
The prepared glass bottle is placed in a dark environment and is kept stand for adsorption for 2 hours.
3) Piezoelectric degradation
And placing the glass bottle subjected to standing and adsorption in an ultrasonic cleaner, and performing ultrasonic piezoelectric oscillation for 2 hours.
4) Testing and computing
Respectively testing the absorbance of three time periods after piezoelectric degradation after standing and adsorbing before reaction by an ultraviolet-visible light spectrophotometer, and according to the formula:
and calculating the removal rate of the MgZnO-PVDF film to the tetracycline.
The results are shown in FIG. 3. As can be seen from FIG. 3, under different pH values, the MgZnO-PVDF film of the composite polymer degradation material still has strong adsorption performance in the tetracycline solution with the concentration of 10mg/L, wherein the removal rate of the MgZnO-PVDF film to the tetracycline after adsorption can reach more than 60%, and the MgZnO-PVDF film of the composite polymer degradation material has strong piezoelectric performance in the tetracycline solution with the concentration of 10mg/L, wherein after standing and adsorption for two hours, the MgZnO-PVDF film is subjected to ultrasonic, and under the influence of ultrasonic waves, the MgZnO-PVDF film is subjected to piezoelectric degradation on the tetracycline through piezoelectric effect, and the adsorption-degradation combined removal rate of the MgZnO-PVDF film to the tetracycline after two hours can reach about 85%.
1) Preparation of the reaction System
The prepared concentration of 20mL of the tetracycline solution with the concentration of 10mg/L is placed in a glass bottle with the volume of 20mL, and the solvents are deionized water, tap water, lake water, pond water, seawater and urban wastewater respectively. And respectively taking 20 mg of MgZnO-PVDF film, washing with deionized water to remove impurities on the surface, and then putting the film into a prepared glass bottle.
2) Standing and adsorbing
The prepared glass bottle is placed in a dark environment and is kept stand for adsorption for 2 hours.
3) Piezoelectric degradation
And placing the glass bottle subjected to standing and adsorption in an ultrasonic cleaner, and performing ultrasonic piezoelectric oscillation for 2 hours.
4) Testing and computing
Respectively testing the absorbance of three time periods after piezoelectric degradation after standing and adsorbing before reaction by an ultraviolet-visible light spectrophotometer, and according to the formula:
and calculating the removal rate of the MgZnO-PVDF film to the tetracycline.
The results are shown in FIG. 4. As can be seen from FIG. 4, under different water environments, the MgZnO-PVDF film of the composite polymer degradation material still has strong adsorption performance in the tetracycline solution with the concentration of 10mg/L, wherein the removal rate of the MgZnO-PVDF film to the tetracycline after adsorption can reach more than 60%, and the MgZnO-PVDF film of the composite polymer degradation material has strong piezoelectric performance in the tetracycline solution with the concentration of 10mg/L, wherein after standing and adsorption for two hours, the MgZnO-PVDF film is subjected to ultrasound, and under the influence of the ultrasound, the MgZnO-PVDF film is subjected to piezoelectric degradation on the tetracycline through the piezoelectric effect, and the adsorption-degradation combined removal rate of the MgZnO-PVDF film to the tetracycline after two hours can reach about 80%.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the MgZnO-PVDF film as the composite polymer degradation material is characterized by comprising the following steps:
(1) Preparing MgZnO powder at high pressure and high temperature;
(2) Preparing MgZnO-PVDF film casting solution;
(3) Pouring MgZnO-PVDF film casting solution on the surface of a special die, forming by using an interface film forming method and drying.
2. The method for preparing the MgZnO-PVDF film as claimed in claim 1, wherein in the step (1), the method for preparing MgZnO powder is as follows:
step 1.1, carrying out double decomposition reaction on magnesium-containing inorganic metal salt, zinc-containing inorganic metal salt and strong alkali to obtain reaction liquid;
And 1.2, transferring the reaction liquid into a high-pressure reaction kettle, heating to a set temperature, maintaining for a period of time, naturally cooling, washing a prepared sample, centrifuging, drying and grinding to obtain MgZnO powder.
3. The method for preparing the MgZnO-PVDF film as claimed in claim 2, wherein in step 1.1, the inorganic metal salt containing magnesium is MgSO 4·7H2 0; the zinc-containing inorganic metal salt is ZnSO 4·7H2 O; the strong base is NaOH solution.
4. The method for preparing the MgZnO-PVDF film as claimed in claim 3, wherein the molar ratio of MgSO 4·7H2 to ZnSO 4·7H2 O is 1:50, the concentration of the NaOH solution is 10mol/L.
5. The method for preparing the MgZnO-PVDF film as claimed in claim 2, wherein in step 1.2, the pressure of the high-pressure reaction kettle is 3Mpa, the temperature is raised to 150 ℃ and kept for 5 hours, then the high-pressure reaction kettle is naturally cooled, and the high-pressure reaction kettle is dried at 60 ℃ after being respectively washed and centrifuged by deionized water and absolute ethyl alcohol.
6. The method for preparing the MgZnO-PVDF film as a composite polymer degradation material according to claim 1, wherein in the step (2), the method for preparing the MgZnO-PVDF film casting solution is as follows:
and adding PVDF and MgZnO powder into the DMF-acetone mixed solution in batches, and placing the mixture on a constant-temperature magnetic stirring heating sleeve until the mixture is dissolved, thus obtaining the casting film liquid.
7. The method for preparing the MgZnO-PVDF film as claimed in claim 6, wherein the mass ratio of the PVDF powder to the MgZnO powder is 1:1; the volume ratio of DMF to acetone in the DMF-acetone mixed solution is 7:3, and the stirring and heating conditions are as follows: stirring and heating at 1020rpm and 20 ℃ until dissolving, and stirring for 2 hours after dissolving.
8. The method for preparing the MgZnO-PVDF film as a composite polymer degradation material according to claim 1, wherein in the step (3), after pouring the MgZnO-PVDF film casting solution on the surface of a special die, the MgZnO-PVDF film casting solution is firstly extended until a surface liquid film is uniformly flattened, then the whole die is immersed in clear water, the film casting solution is completely solidified on the surface, the film is rapidly pulled out, sent to an oven for baking, and the surface film is removed after baking, so as to obtain the MgZnO-PVDF film.
9. A composite polymer degradation material MgZnO-PVDF film prepared by the preparation method of any one of claims 1 to 8.
10. The use of the composite polymer degradation material MgZnO-PVDF film according to claim 9 for adsorbing and/or degrading tetracycline.
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| CN202410201568.3A CN118085354A (en) | 2024-02-23 | 2024-02-23 | MgZnO-PVDF film of composite polymer degradation material, and preparation method and application thereof |
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| CN202410201568.3A CN118085354A (en) | 2024-02-23 | 2024-02-23 | MgZnO-PVDF film of composite polymer degradation material, and preparation method and application thereof |
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