CN115093673A - Three-dimensional super-hydrophobic material prepared based on bismuth oxybromide and application thereof - Google Patents
Three-dimensional super-hydrophobic material prepared based on bismuth oxybromide and application thereof Download PDFInfo
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- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 54
- OZKCXDPUSFUPRJ-UHFFFAOYSA-N oxobismuth;hydrobromide Chemical compound Br.[Bi]=O OZKCXDPUSFUPRJ-UHFFFAOYSA-N 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
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- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims abstract description 30
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- 238000000034 method Methods 0.000 claims abstract description 14
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- B01D17/02—Separation of non-miscible liquids
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Abstract
The invention relates to a three-dimensional super-hydrophobic material prepared based on bismuth oxybromide and application thereof, and belongs to the technical field of materials. The three-dimensional super-hydrophobic material is a super-wetting S-3D-BiOBr @ MS material with photocatalytic degradation capability, which is synthesized by in-situ synthesizing BiOBr on melamine sponge, and modifying dodecanedicarboxylic acid and hydrophobic lauric acid with pH response capability. The method has the advantages of simplicity, high efficiency, environmental protection, low raw material cost and the like, and the prepared material has good oil-water separation capacity and mechanical stability and shows high-efficiency photocatalytic degradation capacity on soluble pollutants. The super-hydrophobic super-oleophilic composite material has good adsorption performance on various oils and organic solvents, is a super-hydrophobic super-oleophilic material with excellent performance, and has good development prospect in oil-water separation.
Description
Technical Field
The invention relates to a three-dimensional super-hydrophobic material prepared based on bismuth oxybromide and application thereof, belonging to the technical field of materials.
Background
With the development of economy, the discharge of industrial oily wastewater and oil leakage accidents at sea generate great threat to the global ecological environment. Therefore, the method for separating the oil-water mixture by using the super-hydrophobic material is widely researched and has a good development prospect. Many traditional oil-water separation methods, such as the preparation of super-hydrophobic materials by modifying organic matters, have the problems of poor durability, poor chemical stability and poor thermal stability, easy mechanical damage, unsuitability for severe environments and the like. Inorganic metal oxides have better durability than organic materials, but some metal oxides, such as zinc oxide, titanium oxide, tin oxide, and vanadium pentoxide, gradually lose their superhydrophobic character under ultraviolet light. Therefore, at present, there is an urgent need to develop a low-cost, high-performance, simple, efficient, environment-friendly method for modifying the hydrophobicity of amphiphilic melamine sponge to prepare a novel efficient, cheap and environment-friendly oil-water separation material.
Compared with the traditional oil-water separation material, the super-wetting material has excellent performances of energy conservation, environmental protection, low cost and high efficiency, and is widely researched and applied in the field of oil-water separation in recent years. The super-hydrophobic super-oleophilic material can completely repel water and efficiently adsorb an oil phase, thereby realizing good oil-water separation effect. However, most of the super-hydrophobic and super-oleophilic materials can not remove a large amount of water-soluble pollutants contained in industrial wastewater, can not meet the actual water purification requirements, and can not achieve the purpose of environmental protection. Therefore, the photocatalytic technology is an effective way for solving the problem of water pollution to degrade water-soluble organic pollutants.
Disclosure of Invention
The invention aims to provide a preparation method of a three-dimensional super-hydrophobic material with excellent performances such as environmental protection, low cost, high efficiency and the like. The bismuth oxybromide-based three-dimensional super-hydrophobic material has good photocatalytic pollutant degradation capability, oil-water separation capability, high oil absorption capability and high mechanical stability.
The technical scheme adopted by the invention is as follows: the three-dimensional super-hydrophobic material is prepared by in-situ synthesis of BiOBr on melamine sponge, modification of dodecanedicarboxylic acid and lauric acid with pH response capability and synthesis of a super-wetting S-3D-BiOBr @ MS material with photocatalytic degradation capability.
The preparation method of the three-dimensional super-hydrophobic material based on bismuth oxybromide comprises the following steps:
1) adding deionized water and glycerol into bismuth nitrate pentahydrate for dissolving, performing ultrasonic treatment, and stirring until the solution is clear to obtain a bismuth nitrate solution; dissolving potassium bromide in water to obtain a potassium bromide solution;
2) soaking a trichlorocyanamide sponge in a potassium bromide solution, then adding the potassium bromide solution and the trichlorocyanamide sponge into a bismuth nitrate solution, stirring, standing, aging, taking out the sponge, and drying to obtain a BiOBr coated sponge 3D-BiOBr @ MS;
3) dissolving lauric acid and dodecanedicarboxylic acid in absolute ethyl alcohol, stirring until the mixture is clear, adding 3D-BiOBr @ MS, soaking at room temperature, taking out and drying to obtain a target product S-3D-BiOBr @ MS.
Preferably, in the above method for preparing a three-dimensional superhydrophobic material based on bismuth oxybromide, in step 1), the volume ratio of the deionized water to glycerol is 1: 2.
Preferably, in the above method for preparing a three-dimensional superhydrophobic material based on bismuth oxybromide, in step 1), the molar ratio of bismuth nitrate to potassium bromide is 1: 1.
Preferably, in the above preparation method of the three-dimensional superhydrophobic material based on bismuth oxybromide, in step 3), the molar ratio of lauric acid: dodecanedicarboxylic acid ═ 5: 4.
the application of the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide in adsorption of oil or organic solvent comprises the following steps: and adding the three-dimensional super-hydrophobic material into an oil-water mixture or a mixture of an organic solvent and water, and adsorbing in a beaker to realize oil-water separation or separation of the organic solvent and water.
The application of the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide in separation of oil and water in sewage comprises the following steps: and filtering the oil-water mixture in a funnel through the three-dimensional super-hydrophobic material, and realizing oil-water separation through gravity separation.
The three-dimensional super-hydrophobic material is applied to photocatalytic degradation of water-soluble organic pollutants.
The application and the method are as follows: and adding the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide into wastewater containing organic pollutants for photocatalytic degradation.
For the above-mentioned application, the organic contaminant is methylene blue.
The invention has the beneficial effects that:
1. according to the invention, the melamine sponge is used as a substrate material, the BiOBr crystal grows on the sponge in situ, so that the surface roughness of the substrate material is improved, the photocatalytic degradation capability is introduced, the overall surface energy of the material is reduced after the material is modified by lauric acid and dodecyl diacid, the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide is constructed, and the three-dimensional super-hydrophobic material can be widely used for various industries such as collection of floating oil, oil-water separation and photocatalytic degradation of pollutants.
2. The three-dimensional super-hydrophobic material prepared based on bismuth oxybromide can completely repel water and efficiently adsorb an oil phase, and is a super-hydrophobic-super-oleophylic material.
3. The preparation method is simple, expensive reagents and equipment and harsh experimental conditions are not needed, the production cost is low, the adsorption efficiency of the synthesized material on oils and organic solvents is high, and the problems of low-cost water pollution and energy consumption can be effectively solved.
4. The three-dimensional super-hydrophobic material prepared based on bismuth oxybromide has excellent mechanical stability and excellent chemical stability, and can be applied to various extreme conditions.
5. The three-dimensional super-hydrophobic material prepared based on bismuth oxybromide can complete pH response after being alkalized, and is changed into a super-hydrophilic material.
6. The three-dimensional super-hydrophobic material prepared based on bismuth oxybromide takes sponge as a substrate, is elastic and porous, can adsorb large-scale water-soluble organic pollutants, increases photocatalytic activity sites, and shows high-efficiency photocatalytic degradation.
Drawings
FIG. 1 is a scanning electron micrograph of MS, 3D-BiOBr @ MS, and S-3D-BiOBr @ MS; wherein (a) (d) is a raw MS sponge SEM image; (b) (e) SEM image of 3D-BiOBr @ MS material; (c) (f) SEM picture of S-3D-BiOBr @ MS material.
FIG. 2 is an infrared spectrum of MS, 3D-BiOBr @ MS, and S-3D-BiOBr @ MS.
FIG. 3 is an XRD pattern of MS, 3D-BiOBr @ MS and S-3D-BiOBr @ MS.
FIG. 4 is a graph of the wettability of the sponge for two degrees of modification; wherein (a) is MS; (b) is S-3D-BiOBr @ MS (the specific water contact angle value is embedded); (c) is a photo of the floating water surface of the S-3D-BiOBr @ MS material; (d) photograph of S-3D-BiOBr @ MS material immersed in water.
FIG. 5 is a graph showing the selective adsorption process of S-3D-BiOBr @ MS material to light oil in an oil-water mixture.
FIG. 6 is a graph of the saturated adsorption capacity of S-3D-BiOBr @ MS material for different oils and organic solvents.
FIG. 7 is a diagram of the oil-water separation process and the oil-water separation efficiency of an S-3D-BiOBr @ MS material; wherein (a1) (a2) is an S-3D-BiOBr @ MS material for the gravity separation of oil-water mixtures of heavy oil and water; (b1) (b2) is S-3D-BiOBr @ MS material for gravity separation of oil and water mixtures of light oil and water. (c) Is an oil-water separation efficiency diagram of the S-3D-BiOBr @ MS material for different oils and organic solvents.
FIG. 8 is a mechanical stability test chart of the S-3D-BiOBr @ MS material; wherein (a) (b) a compression test; (c) testing water flow impact; (d) performing a tensile test; (e) (f) abrasion test.
FIG. 9 is a graphical representation of the photocatalytic degradation of contaminants by the S-3D-BiOBr @ MS material; wherein, (a) is a photo of a device for photocatalytic degradation of methylene blue; (b) is the photodegradation curve of the material to methylene blue; (c) the photocatalytic degradation capability of the pollutants (methylene blue) is shown as a curve.
FIG. 10 is a graph of the preparation of S-3D-BiOBr @ MS material by in situ synthesis and its multifunctional applications.
Detailed Description
Example 1 three-dimensional super-hydrophobic material S-3D-BiOBr @ MS prepared based on bismuth oxybromide
The preparation method comprises the following steps:
1) weighing 0.097g of pentahydrate bismuth nitrate, adding the pentahydrate bismuth nitrate into a mixed solution of 40mL of deionized water and 80mL of glycerol, carrying out ultrasonic treatment for 10min to obtain 0.2mmol of bismuth nitrate solution, diluting the solution to obtain 0.05mmol of bismuth nitrate solution, stirring the solution at room temperature until the solution is clear and transparent, and then averagely dividing the solution into four parts, wherein each part is 30mL of 0.05mmol of bismuth nitrate solution;
0.119g of potassium bromide is weighed and dissolved in 60mL of deionized water, and the solution is diluted by 20 times after being stirred to be completely dissolved, so that four parts of 0.05mmol potassium bromide solution are obtained.
2) Four pieces of melamine sponge MS of 1cm x 1cm were immersed in four portions of potassium bromide solution, respectively, so that the sponge completely absorbed the potassium bromide solution.
And then dropwise adding the residual potassium bromide solution into the bismuth nitrate solution by using a dropper while stirring, simultaneously transferring the MS which is saturated and adsorbed with the potassium bromide solution into the bismuth nitrate solution, stirring for 1h, and then standing and aging for 3h at room temperature. And after the reaction is finished, taking out the sponge, washing with water once, washing with ethanol once, drying the sponge for 12 hours at 60 ℃, and successfully growing BiOBr on MS in situ to synthesize the 3D-BiOBr @ MS.
3) 1.00g of Lauric Acid (LA) and 0.921g of dodecanedioic acid (DDA) were dissolved in 50mL of absolute ethanol, and a piece of BiOBr @ MS was immersed in the modification solution and soaked at 60 ℃ for 4 hours. And (3) after the reaction is finished, taking out the sponge, and drying at 60 ℃ overnight to prepare the S-3D-BiOBr @ MS material with super-hydrophobic and super-oleophilic surface wettability.
(II) detection
1. The microscopic morphologies of MS, 3D-BiOBr @ MS, and S-3D-BiOBr @ MS materials were observed using Scanning Electron Microscopy (SEM).
As shown in FIG. 1, (a) (d) is a scanning electron micrograph of an untreated sponge MS, and the sponge is observed to be loose and porous, has a smooth and flat surface and is amphiphilic. (b) And (e) a scanning electron microscope image of the BiOBr-treated sponge 3D-BiOBr @ MS shows that a plurality of rugged nano structures are formed on the surface, and a structural basis is provided for realizing the hydrophobic property. (c) And (f) a scanning electron microscope image of the super-hydrophobic sponge S-3D-BiOBr @ MS treated by BiOBr, LA and DDA can be observed, the surface of the sponge becomes rougher, the specific surface area is further increased, active sites are increased, and the possibility is provided for super-hydrophobic super-oleophylic property.
2. The functional group structures of the sponge MS, 3D-BiOBr @ MS and S-3D-BiOBr @ MS materials were characterized using a Fourier transform infrared spectrometer.
As shown in FIG. 2, the infrared spectroscopy is used at 4000-500cm -1 MS, 3D-BiOBr @ MS, and S-3D-BiOBr @ MS were characterized for functional groups within the ranges of (1). 3400cm in the infrared spectrum of 3D-BiOBr @ MS of bismuth oxybromide sponge -1 Characteristic peak of hydroxyl group of 1050cm -1 The C-O stretching vibration peak shows that the surface of the bismuth oxybromide sponge 3D-BiOBr @ MS is successfully modified with hydroxyl which can be used as an active site. Through the modification of DDA and LA, hydroxyl is consumed, and the spectrogram of an S-3D-BiOBr @ MS material is 3400cm -1 And 1050cm -1 The characteristic peak of hydroxyl group at (a) almost disappears. 1688cm in the S-3D-BiOBr @ MS spectrum -1 ，2850cm -1 And 2917cm -1 New characteristic peaks appeared, demonstrating the presence of DDA and LA, indicating that LA and DDA successfully modified the surface of 3D-BiOBr @ MS.
3. The crystal form structures of the sponge MS, the 3D-BiOBr @ MS and the S-3D-BiOBr @ MS are determined by an X-ray powder diffraction method.
The XRD diffraction patterns of the prepared 3D-BiOBr @ MS and S-3D-BiOBr @ MS are shown in figure 3. When the 2 θ position and relative intensity of the diffraction line of the prepared material are compared with those of the standard card 09-0393, the diffraction peaks at 2 θ ═ 11.0 °, 25.2 °, 31.7 °, 32.3 °, 46.3 °, 53.5 ° and 57.2 ° are characteristic peaks of bismuth oxybromide, which correspond to the (001), (101), (102), (110), (200), (211) and (212) crystal planes of 3D-BiOBr @ MS, respectively. The successful synthesis of 3D-BiOBr @ MS is illustrated. In addition, the mild reaction did not destroy the original crystalline form of 3D-BiOBr @ MS, since the peak position of the S-3D-BiOBr @ MS diffraction peak was not significantly shifted compared to the diffraction peak of 3D-BiOBr @ MS.
4. The wetting property of the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide is observed and characterized by utilizing the penetration condition and the contact angle of liquid drops, and the water contact angle of the three-dimensional super-hydrophobic material is measured by utilizing an optical contact angle measuring instrument.
As shown in FIG. 4, (a) (b) is a graph of sponge wettability for two degrees of modification of MS, S-3D-BiOBr @ MS, respectively (water droplets stained with subunit blue, neutral); (c) is a photo of the floating water surface of the S-3D-BiOBr @ MS material; (d) photograph of S-3D-BiOBr @ MS material immersed in water. The MS has hydrophilicity, and water drops can instantly permeate into the sponge after contacting the surface of the MS. Except the coarse structure of the BiOBr crystal structure of the S-3D-BiOBr @ MS material, LA and DDA can reduce the surface energy of the sponge, water drops on the surface of the S-3D-BiOBr @ MS material are spherical and do not diffuse, the S-3D-BiOBr @ MS material is super-hydrophobic, and the contact angle is 150.1 degrees. Due to the super-hydrophobicity, the S-3D-BiOBr @ MS material can float on the surface of water when no external pressure is applied, and when the S-3D-BiOBr @ MS material is completely immersed in the water, a layer of air film can be observed on the interface of the sponge and the water, the air film coats the whole material, and the interior of the material cannot enter a water phase.
5. The oil-absorbing material performance can be evaluated by using the adsorption amount as an evaluation standard, and the adsorption amount can be measured by the following procedure. Weighing the S-3D-BiOBr @ MS material, then putting the material into different types of oils and organic solvents for adsorption test, then taking out the sample, wiping off the oils and organic solvents on the surface by using filter paper, and then weighing the oil absorption material again. The adsorption capacity (Q) is calculated by the following equation:
Q＝(M 1 -M 0 )/M 0 wherein M is 0 Is the weight of the material before oil absorption, M 1 Is the weight of the material after oil absorption.
Example 2 application of three-dimensional super-hydrophobic material S-3D-BiOBr @ MS prepared based on bismuth oxybromide in separation of oil-water mixture
1. In order to investigate the practical application of collecting oil spill of the three-dimensional super-hydrophobic material S-3D-BiOBr @ MS prepared based on bismuth oxybromide, the situation that oil is separated from an oil-water mixture under natural conditions is simulated. The selective adsorption experiment was carried out using n-hexane (light oil, sudan iii stain) mixed with water, and the results are shown in fig. 5.
As shown in FIG. 5, n-hexane has a low density and is located above the water phase, and when the material is in contact with the water phase, the n-hexane is rapidly absorbed into the sponge due to capillary action, so that static separation of the n-hexane and the water is realized.
2. The saturated adsorption capacity of the S-3D-BiOBr @ MS material to two oils (engine oil and soybean oil) and an organic solvent is examined. The results are shown in FIG. 6. As can be obtained from the figure 6, the saturated adsorption capacity of the S-3D-BiOBr @ MS material to different oils and organic solvents reaches 17-43 times of the self-mass, and the S-3D-BiOBr @ MS material has higher adsorption capacity.
3. The continuous oil-water separation capability of the material is investigated. As shown in fig. 7, in fig. 7 (a1) (a2), the S-3D-BiOBr @ MS material was inserted into a funnel, the heavy oil/water (chloroform/water) mixture was poured into the funnel, the organic phase flowed down due to the superhydrophobic-superhydrophilic nature of the S-3D-BiOBr @ MS material, and the aqueous phase was trapped in the funnel. In fig. 7 (b1) (b2), after the S-3D-BiOBr @ MS material is filled into a funnel, the light oil/water (toluene/water) mixture is poured into the funnel, the light oil is slowly poured, after the light oil completely passes through the sponge, the water phase is poured, due to the super-hydrophobicity-super-lipophilicity of the material, the organic phase finally flows out, the water phase is trapped in the funnel, the separation effect is shown in fig. 7 (c), and the oil-water separation efficiency of the two oils (oil, soybean oil) and the organic solvent (dichloromethane, chloroform, toluene) is as high as 97%.
Example 3 three-dimensional superhydrophobic material S-3D-BiOBr @ MS prepared based on bismuth oxybromide mechanical stability
1. The mechanical stability of the S-3D-BiOBr @ MS material is investigated. The S-3D-BiOBr @ MS material was subjected to a compression test as shown in FIG. 8 (a) (b); performing a water sand test on the S-3D-BiOBr @ MS material as shown in FIG. 8 (c); as shown in fig. 8 (D), the S-3D-BiOBr @ MS material was subjected to a tensile test; the S-3D-BiOBr @ MS material was subjected to abrasion testing as shown in (e) (f) of the figure. The S-3D-BiOBr @ MS material can still keep good hydrophobicity after various tests are repeated for many times, and has higher oil-water separation efficiency.
Example 4 application of a three-dimensional superhydrophobic material S-3D-BiOBr @ MS prepared based on bismuth oxybromide in catalytic degradation of water-soluble pollutants.
1. The photocatalytic degradation capability of the S-3D-BiOBr @ MS material on water-soluble pollutants (methylene blue) is examined, and the result is shown in a figure 9. Fig. 9 (a) shows the apparatus for photocatalytic degradation experiment, fig. 9 (b) shows the color change of the solution after the reaction is finished, and fig. 9 (c) shows the capability curve of photocatalytic degradation of the pollutant (methylene blue).
As shown in fig. 9 (a), a 1cm × 1cm × 1cm S-3D-BiOBr @ MS material is placed in a 50mL reaction tank containing 10ppm aqueous methylene blue at pH 7, and the reaction tank is placed in the dark and kept still for 30min to achieve self-adsorption-desorption equilibrium of the material to methylene blue. The 500W xenon lamp is used for simulating sunlight to irradiate the reaction cell solution after the self-adsorption-desorption balance is completed, 4mL of methylene blue solution is taken every 30min of irradiation, and an ultraviolet spectrophotometer is used for measuring the content of the methylene blue in the solution. And judging the photocatalytic capacity of the S-3D-BiOBr @ MS material to methylene blue by comparing the content change of the methylene blue in the solution. The photocatalytic degradation efficiency (η) can be calculated by the following formula.
η＝(C 0 -C 1 )/C 0 X 100% of wherein, C 0 Is the concentration of methylene blue in the starting solution, C 1 For the concentration of methylene blue remaining in the solution after different periods of irradiation
As shown in figure 9 (c), after 7.5h of illumination, the degradation efficiency of the S-3D-BiOBr @ MS material on methylene blue reaches 95%, and the solution gradually approaches to be colorless.
Claims (10)
1. The three-dimensional super-hydrophobic material is characterized in that the three-dimensional super-hydrophobic material is a super-wetting S-3D-BiOBr @ MS material with photocatalytic degradation capability, which is synthesized by in-situ synthesis of BiOBr on melamine sponge, modification of dodecanedicarboxylic acid and lauric acid with pH response capability.
2. The preparation method of the three-dimensional superhydrophobic material based on bismuth oxybromide as claimed in claim 1, characterized by comprising the steps of:
1) adding deionized water and glycerol into bismuth nitrate pentahydrate for dissolving, performing ultrasonic treatment, and stirring until the solution is clear to obtain a bismuth nitrate solution; dissolving potassium bromide in water to obtain a potassium bromide solution;
2) soaking a trichlorocyanamide sponge in a potassium bromide solution, adding the potassium bromide solution and the trichlorocyanamide sponge into a bismuth nitrate solution, stirring, standing, aging, taking out the sponge, and drying to obtain a BiOBr coated sponge 3D-BiOBr @ MS;
3) dissolving lauric acid and dodecanedicarboxylic acid in absolute ethyl alcohol, stirring until the mixture is clear, adding 3D-BiOBr @ MS, soaking at room temperature, taking out and drying to obtain a target product S-3D-BiOBr @ MS.
3. The method for preparing the three-dimensional super-hydrophobic material based on bismuth oxybromide as claimed in claim 2, wherein in the step 1), the volume ratio of the deionized water to the glycerol is 1: 2.
4. The method for preparing the three-dimensional super-hydrophobic material based on bismuth oxybromide as claimed in claim 2, wherein in step 1), the molar ratio of bismuth nitrate to potassium bromide is 1: 1.
5. The method for preparing the three-dimensional superhydrophobic material based on bismuth oxybromide as claimed in claim 2, wherein in the step 3), the molar ratio of lauric acid: dodecanedicarboxylic acid ═ 5: 4.
6. the application of the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide in adsorbing oils or organic solvents, which is characterized by comprising the following steps: the three-dimensional super-hydrophobic material of claim 1 is added to a mixture of oil and water or a mixture of an organic solvent and water, and the mixture is adsorbed in a beaker to realize oil-water separation or separation of the organic solvent and water.
7. The application of the three-dimensional super-hydrophobic material prepared on the basis of bismuth oxybromide in separating oil and water in sewage, which is characterized in that the method comprises the following steps: filtering the oil-water mixture through the three-dimensional super-hydrophobic material in the funnel according to claim 1, and separating oil and water through gravity separation.
8. Use of the three-dimensional superhydrophobic material of claim 1 in photocatalytic degradation of water-soluble organic contaminants.
9. Use according to claim 8, characterized in that the method is as follows: adding the three-dimensional super-hydrophobic material prepared based on bismuth oxybromide in claim 1 into wastewater containing organic pollutants for photocatalytic degradation.
10. Use according to claim 9, wherein the organic contaminant is methylene blue.
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| CN108586795A (en) * | 2018-05-09 | 2018-09-28 | 天津工业大学 | A kind of fast preparation method of super-hydrophobic three-dimensional sponge and its water-oil separating application |
| CN112108130A (en) * | 2020-09-10 | 2020-12-22 | 辽宁大学 | Intelligent super-hydrophobic material and preparation method and application thereof |
| CN113426430A (en) * | 2021-07-30 | 2021-09-24 | 辽宁大学 | Intelligent oil-water separation material and preparation method and application thereof |
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| CN108586795A (en) * | 2018-05-09 | 2018-09-28 | 天津工业大学 | A kind of fast preparation method of super-hydrophobic three-dimensional sponge and its water-oil separating application |
| CN112108130A (en) * | 2020-09-10 | 2020-12-22 | 辽宁大学 | Intelligent super-hydrophobic material and preparation method and application thereof |
| CN113426430A (en) * | 2021-07-30 | 2021-09-24 | 辽宁大学 | Intelligent oil-water separation material and preparation method and application thereof |
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