CN114405486B - Preparation method of porous cryogel with antifouling and antibacterial functions and dye adsorption preventing functions - Google Patents
Preparation method of porous cryogel with antifouling and antibacterial functions and dye adsorption preventing functions Download PDFInfo
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- CN114405486B CN114405486B CN202111361669.XA CN202111361669A CN114405486B CN 114405486 B CN114405486 B CN 114405486B CN 202111361669 A CN202111361669 A CN 202111361669A CN 114405486 B CN114405486 B CN 114405486B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28047—Gels
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The invention relates to the technical field of oil-water separation of underwater super oleophobic membrane materials, in particular to a preparation method of an underwater super oleophobic porous gel with functions of antifouling, antibacterial and dye adsorption prevention; dispersing lithium magnesium silicate and Lap modified by antibacterial silver ions in a polyethylene glycol diacrylate prepolymer solution to obtain a first solvent, adding a reactant into the first solvent, uniformly mixing to obtain a mixture, timely sucking the mixture into a mold, placing the mold in an environment with the temperature of-80 ℃ for freezing, transferring the mold to the environment with the temperature of-20 ℃ for placing after the mixture is crystallized, and thawing the mixture to obtain the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention.
Description
Technical Field
The invention relates to the technical field of oil-water separation of underwater super oleophobic membrane materials, in particular to a preparation method of an underwater super oleophobic porous gel with functions of antifouling, antibacterial and dye adsorption prevention.
Background
The industrialized development and the rapid population growth lead to the discharge of a large amount of oily sewage, cause serious resource waste and environmental ecological damage, and bring serious threat to human life and health. The dye pollutants in the sewage have stable properties, complex chemical composition and high toxicity, and most of the dye pollutants are difficult to biodegrade, so that serious pollution is caused to the ecological environment. In addition, bacteria are easy to adhere to the surface of the material, so that the material is stained, the permeability and the separation effect of the material are affected, and great difficulty is added to the separation and purification technology. The traditional oil-water separation technology is limited in many ways, and complex pollution components of bacteria, dyes and oil contained in industrial wastewater and domestic sewage are difficult to completely treat by adopting a one-step membrane separation method.
At present, a membrane separation water treatment technology is used for solving the problem of traditional oil-water separation, but the existing prepared underwater super-oleophobic membrane material cannot realize oil-water separation integration and cannot realize one-step separation of bacteria, dyes and oil complex sewage.
Disclosure of Invention
The invention aims to provide a preparation method of a porous cryogel with functions of antifouling, antibacterial and dye adsorption prevention, and aims to solve the technical problems that oil-water separation integration and one-step separation of bacteria, dye and oil complex sewage cannot be realized in the prior art.
In order to achieve the above purpose, the preparation method of the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention adopted by the invention comprises the following steps:
dispersing Lap and antibacterial silver ion modified Lap in a polyethylene glycol diacrylate prepolymer solution to obtain a first solvent;
adding a reactant into the first solvent, and uniformly mixing to obtain a mixture;
sucking the mixture into a die in time, and placing the die in an environment with the temperature of-80 ℃ for freezing;
after the mixture is crystallized, transferring to an environment with the temperature of minus 20 ℃ for standing;
and thawing the mixture to obtain the porous cryogel with antifouling, antibacterial and dye adsorption preventing functions.
Wherein, in the step of dispersing Lap and Lap modified by antibacterial silver ions in polyethylene glycol diacrylate prepolymer solution together to obtain a first solvent:
the volume ratio of the Lap modified by Lap and antibacterial silver ions to the polyethylene glycol diacrylate prepolymer solution is 48mg:2mg:1ml.
Wherein, in the step of adding the reactant into the first solvent and uniformly mixing to obtain the mixture:
the reactants are tetramethyl ethylenediamine and ammonium persulfate, and the volume ratio of the reactants to the polyethylene glycol diacrylate prepolymer solution is 3.5:75:1000.
wherein, in the step of adding the reactant into the first solvent and uniformly mixing to obtain the mixture:
the ammonium persulfate in the reactant is ammonium persulfate solution with the mass concentration of 10% by taking PBS buffer solution as a solvent.
Wherein, in the step of dispersing Lap and Lap modified by antibacterial silver ions in polyethylene glycol diacrylate prepolymer solution to obtain a first solvent, the preparation method of Lap modified by antibacterial silver ions comprises the following steps:
0.68g of silver nitrate is weighed and added with 40ml of deionized water to obtain silver nitrate solution,
weighing 0.2g of Lap in a silver nitrate solution, stirring, and then placing in a refrigerator at the temperature of minus 80 ℃;
and (5) freeze-drying to obtain the antibacterial silver ion modified Lap.
The porous cryogel with the functions of antifouling, antibacterial and dye adsorption is prepared according to the preparation method of the porous cryogel with the functions of antifouling, antibacterial and dye adsorption, and meanwhile, one-step separation of bacteria, dyes and adhesion pollution resistance is realized.
The beneficial effects of the invention are as follows: firstly, lap and antibacterial silver ion modified Lap are dispersed in polyethylene glycol diacrylate prepolymer solution to obtain the first solvent, then a reactant is added into the first solvent and uniformly mixed to obtain the mixture, the mixture is timely sucked into a die and placed in an environment with the temperature of 80 ℃ below zero for freezing, after the mixture is crystallized, the mixture is transferred to the environment with the temperature of 20 ℃ below zero for placing, finally, the mixture is thawed to obtain the porous cryogel with the functions of anti-fouling and antibacterial and dye adsorption, the special infiltration property is combined with a functional green environment-friendly material, polyethylene glycol is used as a raw material, the ion exchange capacity of Lap is combined, a low-temperature controlled freezing polymerization mode is adopted, the preparation method is simple and easy to operate, the reaction condition is mild, large-scale instruments and equipment are not needed, the product can be biodegraded, a foundation is laid for realizing the application of multifunctional complex wastewater treatment, and the anti-fouling, antibacterial and dye adsorption-preventing porous cryogel material can realize anti-fouling, antibacterial and dye adsorption and water separation.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of the steps of embodiment 1 of the present invention.
Fig. 2 is a flow chart of the steps of embodiment 2 of the present invention.
Fig. 3 is a flow chart of the steps of embodiment 3 of the present invention.
FIG. 4 is a graph showing the separation of five oils, namely soybean oil, engine oil, diesel oil, kerosene and n-hexane, from a porous cryogel prepared from 200mg/ml polyethylene glycol diacrylate solution and having anti-fouling, antibacterial and dye adsorption preventing functions, and the separation efficiency thereof.
FIG. 5 is an antifouling self-cleaning picture of a porous cryogel prepared with 200mg/ml polyethylene glycol diacrylate solution for antifouling and antibacterial and dye adsorption prevention functions.
FIG. 6 is a graph showing experimental results of adsorption of methine blue and rhodamine B by using a porous cryogel prepared by 200mg/ml of a polyethylene glycol diacrylate solution and having anti-fouling, antibacterial and dye adsorption functions.
FIG. 7 is a graph showing the results of a comparative test of a porous cryogel prepared from 200mg/ml polyethylene glycol diacrylate solution and having anti-fouling, antibacterial and dye adsorption functions, with a porous cryogel prepared from Lap modified with antibacterial silver ions, and with no Lap prepared porous cryogel against E.coli and Staphylococcus aureus.
Detailed Description
s1: weighing 0.68g of silver nitrate, adding 40ml of deionized water to obtain a silver nitrate solution, weighing 0.2g of Lap in the silver nitrate solution, magnetically stirring for 24 hours, taking out, centrifuging at 5000rpm/min for 15 minutes, repeating for 3-4 times, then placing in a refrigerator at-80 ℃, freeze-drying, and filtering by a 120-mesh filter screen to obtain antibacterial silver ion modified Lap;
s2: 200mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, 96mg of Lap and 4mg of Lap modified by the antibacterial silver ions are weighed and evenly mixed in the polyethylene glycol diacrylate solution, and the mixture is heated in a water bath kettle at 60 ℃ to obtain a mixture;
s3: weighing 0.1g of ammonium persulfate, dissolving in 1ml of deionized water, and preserving at low temperature;
s4: putting the mixture into an ice-water mixture for 2 minutes, and putting a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm into an environment with the temperature of-80 ℃ for freezing;
s5: taking 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine into the mixture and ice-water mixture, timely sucking into a silica gel mold, and placing in an environment with the temperature of-80 ℃ for freezing, and waiting for crystallization;
s6: and (3) crystallizing and solidifying the obtained material, transferring to an environment with the temperature of-20 ℃ for standing, taking out after reacting for 24 hours, and thawing with deionized water to obtain the porous gel with the functions of antifouling, antibacterial and dye adsorption prevention.
In the embodiment, firstly, 0.68g of silver nitrate is weighed and 40ml of deionized water is added to obtain a silver nitrate solution, then 0.2g of Lap is weighed and added to the silver nitrate solution, after magnetic stirring for 24 hours, the mixture is taken out and centrifuged for 15 minutes at 5000rpm/min, 3 to 4 times of the mixture is repeated, then the mixture is put into a refrigerator with the temperature of minus 80 ℃, after freeze drying, antibacterial silver ion modified Lap is obtained through a 120-mesh filter screen, then 200mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, then 96mg of Lap and 4mg of antibacterial silver ion modified Lap are weighed and evenly mixed in the polyethylene glycol diacrylate solution, the mixture is put into a water bath kettle with the temperature of 60 ℃ for heating, then 0.1g of the mixture is weighed and dissolved in 1ml of deionized water, the mixture is stored at low temperature, the mixture is put into an ice-water mixture for 2 minutes, and a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm is put into an environment with the temperature of minus 80 ℃ for freezing, then 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine are taken and are in time sucked into a silica gel mold, and are placed in an environment with the temperature of minus 80 ℃ for freezing, the crystallization is waited, finally the obtained material is transferred to the environment with the temperature of minus 20 ℃ for placing after the crystallization solidification, the obtained material is taken out after the reaction is carried out for 24 hours, and is thawed by deionized water, thus obtaining the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention, the special infiltration property is combined with the functional green environment-friendly material, polyethylene glycol is used as the raw material, the ion exchange capacity of Lap is combined, the low-temperature controlled freezing polymerization mode is adopted, the preparation method is simple and easy to operate, the reaction condition is mild, the cost is low, large-scale instruments and equipment are not needed, the product can be biodegraded, the foundation is laid for realizing the application of multifunctional complex wastewater treatment, the gel material prepared by the preparation method of the porous gel with the functions of antifouling, antibacterial and dye adsorption can realize antifouling, antibacterial, dye adsorption and oil-water separation.
s1: weighing 0.68g of silver nitrate, adding 40ml of deionized water to obtain a silver nitrate solution, weighing 0.2g of Lap in the silver nitrate solution, magnetically stirring for 24 hours, taking out, centrifuging at 5000rpm/min for 15 minutes, repeating for 3-4 times, then placing in a refrigerator at-80 ℃, freeze-drying, and filtering by a 120-mesh filter screen to obtain antibacterial silver ion modified Lap;
s2: 600mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, 96mg of Lap and 4mg of Lap modified by the antibacterial silver ions are weighed and evenly mixed in the polyethylene glycol diacrylate solution, and the mixture is heated in a water bath kettle at 60 ℃ to obtain a mixture;
s3: weighing 0.1g of ammonium persulfate, dissolving in 1ml of deionized water, and preserving at low temperature;
s4: putting the mixture into an ice-water mixture for 2 minutes, and putting a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm into an environment with the temperature of-80 ℃ for freezing;
s5: taking 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine into the mixture and ice-water mixture, timely sucking into a silica gel mold, and placing in an environment with the temperature of-80 ℃ for freezing, and waiting for crystallization;
s6: and (3) crystallizing and solidifying the obtained material, transferring to an environment with the temperature of-20 ℃ for standing, taking out after reacting for 24 hours, and thawing with deionized water to obtain the porous gel with the functions of antifouling, antibacterial and dye adsorption prevention.
In the embodiment, firstly, 0.68g of silver nitrate is weighed and 40ml of deionized water is added to obtain a silver nitrate solution, then 0.2g of Lap is weighed and added to the silver nitrate solution, after magnetic stirring for 24 hours, the mixture is taken out and centrifuged at 5000rpm/min for 15 minutes, 3 to 4 times of repetition is carried out, then the mixture is put into a refrigerator with the temperature of minus 80 ℃, after freeze drying, antibacterial silver ion modified Lap is obtained through a 120-mesh filter screen, then 600mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, then 96mg of Lap and 4mg of antibacterial silver ion modified Lap are weighed and evenly mixed in the polyethylene glycol diacrylate solution, the mixture is put into a water bath kettle with the temperature of 60 ℃ for heating, then 0.1g of mixture is weighed and dissolved in 1ml of deionized water, the mixture is stored at low temperature, then the mixture is put into an ice-water mixture for 2 minutes, and a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm is put into an environment with the temperature of minus 80 ℃ for freezing, then 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine are taken and are timely sucked into a silica gel mold, and the silica gel mold is placed in an environment with the temperature of minus 80 ℃ for freezing, the crystallization is waited, finally the obtained material is transferred to an environment with the temperature of minus 20 ℃ for placing after crystallization and solidification, the material is taken out after reaction for 24 hours and is thawed by deionized water, the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention is obtained, the special infiltration property is combined with the functional green environment-friendly material, polyethylene glycol is used as the raw material, the excellent ion exchange capacity of Lap is combined, the low-temperature controlled freezing polymerization mode is adopted, the preparation method is simple and easy to operate, the reaction condition is mild, the cost is low, large-scale instruments and equipment are not needed, the product can be biodegraded, the foundation is laid for realizing the application of multifunctional complex wastewater treatment, the gel material prepared by the preparation method of the porous gel with the functions of antifouling, antibacterial and dye adsorption can realize antifouling, antibacterial, dye adsorption and oil-water separation.
s1: weighing 0.68g of silver nitrate, adding 40ml of deionized water to obtain a silver nitrate solution, weighing 0.2g of Lap in the silver nitrate solution, magnetically stirring for 24 hours, taking out, centrifuging at 5000rpm/min for 15 minutes, repeating for 3-4 times, then placing in a refrigerator at-80 ℃, freeze-drying, and filtering by a 120-mesh filter screen to obtain antibacterial silver ion modified Lap;
s2: 400mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, 96mg of Lap and 4mg of Lap modified by the antibacterial silver ions are weighed and evenly mixed in the polyethylene glycol diacrylate solution, and the mixture is heated in a water bath kettle at 60 ℃ to obtain a mixture;
s3: weighing 0.1g of ammonium persulfate, dissolving in 1ml of deionized water, and preserving at low temperature;
s4: putting the mixture into an ice-water mixture for 2 minutes, and putting a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm into an environment with the temperature of-80 ℃ for freezing;
s5: taking 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine into the mixture and ice-water mixture, timely sucking into a silica gel mold, and placing in an environment with the temperature of-80 ℃ for freezing, and waiting for crystallization;
s6: and (3) crystallizing and solidifying the obtained material, transferring to an environment with the temperature of-20 ℃ for standing, taking out after reacting for 24 hours, and thawing with deionized water to obtain the porous gel with the functions of antifouling, antibacterial and dye adsorption prevention.
In the embodiment, firstly, 0.68g of silver nitrate is weighed and 40ml of deionized water is added to obtain a silver nitrate solution, then 0.2g of Lap is weighed and added to the silver nitrate solution, after magnetic stirring for 24 hours, the mixture is taken out and centrifuged for 15 minutes at 5000rpm/min, 3 to 4 times of the mixture is repeated, then the mixture is put into a refrigerator with the temperature of minus 80 ℃, after freeze drying, antibacterial silver ion modified Lap is obtained through a 120-mesh filter screen, then 400mg of polyethylene glycol diacrylate is weighed and dissolved in 2ml of PBS, then 96mg of Lap and 4mg of antibacterial silver ion modified Lap are weighed and evenly mixed in the polyethylene glycol diacrylate solution, the mixture is put into a water bath kettle with the temperature of 60 ℃ for heating, then 0.1g of the mixture is weighed and dissolved in 1ml of deionized water, the mixture is stored at low temperature, then the mixture is put into an ice-water mixture for 2 minutes, a cylindrical silica gel mold with the diameter of 8mm and the height of 5mm is put into an environment with the temperature of minus 80 ℃ for freezing, then 0.15ml of the mixture and 0.007ml of tetramethyl ethylenediamine are taken and are timely sucked into a silica gel mold, and the silica gel mold is placed in an environment with the temperature of minus 80 ℃ for freezing, the crystallization is waited, finally the obtained material is transferred to an environment with the temperature of minus 20 ℃ for placing after crystallization and solidification, the material is taken out after reaction for 24 hours and is thawed by deionized water, the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention is obtained, the special infiltration property is combined with the functional green environment-friendly material, polyethylene glycol is used as the raw material, the excellent ion exchange capacity of Lap is combined, the low-temperature controlled freezing polymerization mode is adopted, the preparation method is simple and easy to operate, the reaction condition is mild, the cost is low, large-scale instruments and equipment are not needed, the product can be biodegraded, the foundation is laid for realizing the application of multifunctional complex wastewater treatment, the gel material prepared by the preparation method of the porous gel with the functions of antifouling, antibacterial and dye adsorption can realize antifouling, antibacterial, dye adsorption and oil-water separation, the porous gel with the functions of antifouling, antibacterial and dye adsorption is respectively subjected to separation tests on five oils of soybean oil, engine oil, diesel oil, kerosene and normal hexane, and the separation efficiency is calculated, so that a separation chart and the separation efficiency are obtained, and the porous gel with the functions of antifouling, antibacterial and dye adsorption has high separation efficiency of more than 98 percent on the five oils; further carrying out anti-pollution adhesion test on the porous cryogel with the anti-pollution antibacterial and dye adsorption preventing functions to obtain an anti-pollution self-cleaning picture, wherein the porous cryogel with the anti-pollution antibacterial and dye adsorption preventing functions has the anti-pollution function, and oil drops are not easy to adhere to materials; further carrying out adsorption test on the methylene blue and rhodamine B dye of the porous cryogel with the antifouling and antibacterial functions and the dye adsorption preventing functions to obtain an experimental result graph for adsorbing the methylene blue and the rhodamine B, wherein the porous cryogel with the antifouling and antibacterial functions and the dye adsorption preventing functions has obvious adsorption effects on the methylene blue and the rhodamine B dye; the material prepared in this example was further tested against escherichia coli and staphylococcus aureus with example 4, and a picture shown in fig. 4 was obtained, and fig. 4 shows that the cryogel material prepared in this example shows antibacterial effect against escherichia coli and staphylococcus aureus.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (2)
1. The preparation method of the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention is characterized by comprising the following steps:
dispersing Lap modified by Lap and antibacterial silver ions in a polyethylene glycol diacrylate prepolymer solution to obtain a first solvent, wherein the volume ratio of the Lap modified by Lap and antibacterial silver ions to the polyethylene glycol diacrylate prepolymer solution is 48mg:2mg:1ml;
adding a reactant into the first solvent, and uniformly mixing to obtain a mixture, wherein the reactant is tetramethyl ethylenediamine and ammonium persulfate, and the volume ratio of the reactant to the polyethylene glycol diacrylate prepolymer solution is 3.5:75:1000, wherein the ammonium persulfate is ammonium persulfate solution with a mass concentration of 10% by taking PBS buffer solution as a solvent;
sucking the mixture into a die in time, and placing the die in an environment with the temperature of-80 ℃ for freezing;
after the mixture is crystallized, transferring to an environment with the temperature of minus 20 ℃ for standing;
thawing the mixture to obtain the porous cryogel with antifouling, antibacterial and dye adsorption preventing functions;
the preparation method of the antibacterial silver ion modified Lap comprises the following steps: weighing 0.68g of silver nitrate, adding 40ml of deionized water to obtain a silver nitrate solution, weighing 0.2g of Lap into the silver nitrate solution, stirring, and then placing into a refrigerator at the temperature of minus 80 ℃; and (5) freeze-drying to obtain the antibacterial silver ion modified Lap.
2. The method for preparing the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention according to claim 1, wherein,
the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention is prepared according to the preparation method of the porous cryogel with the functions of antifouling, antibacterial and dye adsorption prevention, and simultaneously realizes one-step separation of bacteria, dyes and adhesion pollution resistance.
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| 特殊浸润性油水分离材料的研究进展;张锦山;董季玲;武伟;尹坚;范海兵;刘洋;丁皓;曹鹏军;马毅龙;;功能材料(第12期);全文 * |
| 纳米Ag/纳米TiO_2/CS复合膜材料的抗大肠杆菌特性研究;黄秋红;徐紫宸;廖晓玲;;中国食品添加剂(第04期);全文 * |
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