CN110193359A - Graphene composite sponge and its preparation method and application - Google Patents
Graphene composite sponge and its preparation method and application Download PDFInfo
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- CN110193359A CN110193359A CN201910567844.7A CN201910567844A CN110193359A CN 110193359 A CN110193359 A CN 110193359A CN 201910567844 A CN201910567844 A CN 201910567844A CN 110193359 A CN110193359 A CN 110193359A
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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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J20/22—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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- 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
- B01J20/28014—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
- B01J20/28042—Shaped bodies; Monolithic structures
- B01J20/28045—Honeycomb or cellular structures; Solid foams or sponges
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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
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Abstract
The invention discloses a kind of graphene composite sponges, which is characterized in that the graphene composite sponge is prepared by graphene and macromolecule sponge；The graphene is graphene oxide or inoxidized graphene；The purity of the graphene is 95% or more, piece diameter≤50 μm, lamellar spacing≤30nm.The graphene composite sponge has good adsorption effect to Oil in Sewage Water organic pollutant.The invention also discloses the preparation methods of the graphene composite sponge, and the application in the processing of Oil in Sewage Water organic pollutant.
Description
Technical field
The present invention relates to a kind of composite sponges and its preparation method and application, especially graphene composite sponge and its preparation
Method and purposes.
Background technique
In recent years, Oil spills accident frequently occurs, and ocean, river is caused seriously to pollute.Oiliness organic pollutant and its
Sewage, waste liquid need to be recycled to the harm of aquatic animals and plants and bringing on a disaster property of the mankind.It is asked to solve this environment
Topic, people, which are committed to research, can satisfy new material, the new method that the recycling of oiliness organic pollutant requires.
CN103626171A discloses a kind of preparation method of water-oil separating material: sponge material is soaked in graphite oxide
In alkene solution, obtained sponge is taken out and is centrifuged, obtains the sponge material of graphite oxide cladding；Graphene oxide is coated into sponge
Material restores under the action of reducing agent, obtains water-oil separating material.Graphene oxide by graphite flake, potassium nitrate, the concentrated sulfuric acid,
Potassium permanganate is mixed to get in aqueous solution with hydrogen peroxide.The water-oil separating material that this method is prepared is to Oil in Sewage Water
The treatment effect of organic pollutant is not ideal enough.
CN109621906A discloses a kind of preparation method of composite sponge for caning absorb sticky state crude oil: (1) will oxidation
Graphene powder is added in pure water, prepares graphene oxide dispersion；(2) concentrated ammonia liquor, L-AA are added to oxidation
In graphene dispersing solution；(3) melamine sponge is put into above-mentioned solution, carries out hot water reaction；(4) by the sponge after reaction
Drying is taken out, the composite sponge for caning absorb sticky state crude oil is obtained.The composite sponge that this method is prepared is for Oil in Sewage Water
The treatment effect of property organic pollutant is bad.
CN107522895A discloses one kind and mildly prepares graphene-polyurethane sponge composite material method: (1) preparing
Graphene oxide, and prepare graphene oxide water solution；(2) it with deionized water clean polyurethane sponge and dries；It (3) will cleaning
Polyurethane sponge after drying immerses in the graphene oxide water solution of step (1) configuration, and drying is taken out after full penetration and is obtained
Graphene oxide-polyurethane sponge；(4) graphene oxide-polyurethane sponge is immersed in sodium borohydride solution, is placed in water-bath
It is restored in pot, obtains graphene-polyurethane sponge composite material.The composite sponge that this method is prepared is for Oil in Sewage Water
The treatment effect of organic pollutant is bad.
CN105754144A discloses a kind of preparation method of redox graphene/sponge composite material: (1) by sponge
Pretreatment；(2) by graphene oxide solution water, ultrasonic disperse obtains graphene oxide solution, ethylenediamine is added, by mixed liquor
It is transferred in microwave-ultrasonic reactor, makes solution boiling reflux, sponge is put into reactor to the reaction was continued, reaction terminates
Afterwards, sponge is taken out, rinses, drying, obtains super-hydrophobic redox graphene/sponge composite material.What this method was prepared
Hydrophobic composite is not ideal enough to the treatment effect of Oil in Sewage Water organic pollutant.
Summary of the invention
In view of this, the first purpose of this invention is the provision of a kind of graphene composite sponge.The graphene is compound
Sponge has very strong adsorption capacity to the oiliness organic pollutant in sewage.
Second object of the present invention is to provide the preparation method of above-mentioned graphene composite sponge.
Third object of the present invention is to provide above-mentioned graphene composite sponge at Oil in Sewage Water organic pollutant
Application in reason.
In a first aspect, the present invention provides a kind of graphene composite sponge, the graphene composite sponge is by graphene and high score
Sub- sponge is prepared；The graphene is graphene oxide or inoxidized graphene；The purity of graphene is 95%
More than, piece diameter≤50 μm, lamellar spacing≤30nm.
Graphene composite sponge according to the present invention, it is preferable that graphene is graphene oxide, the graphene oxide
Middle oxygen carbon molar ratio is 0.15~0.65.
Graphene composite sponge according to the present invention, it is preferable that macromolecule sponge is selected from polyurethane sponge, melamine sea
One of silk floss, polyvinylalcohol sponge, polyethylene foam or butadiene-styrene rubber foam.
Second aspect, the present invention provide a kind of preparation method of above-mentioned graphene composite sponge, include the following steps:
(1) graphene is mixed with water, is configured to graphene aqueous solution；
(2) macromolecule sponge is immersed in graphene aqueous solution, obtains compound；
Wherein, when graphene is inoxidized graphene, compound is graphene composite sponge；When graphene is
When graphene oxide, also need that compound is immersed in reducing agent solution to get graphene composite sponge by step (3).
Preparation method according to the present invention, it is preferable that the volume ratio of macromolecule sponge and graphene aqueous solution is 1:2~6.
Preparation method according to the present invention, it is preferable that the concentration of graphene is 1~10mg/ml in graphene aqueous solution.
Preparation method according to the present invention, it is preferable that when graphene is graphene oxide, the reducing agent and oxidation
The mass ratio of graphene is 1:0.2~1.
Preparation method according to the present invention, it is preferable that when graphene is graphene oxide, the reducing agent is selected from second
One in diamines, sodium ascorbate, gallic acid, hydrazine hydrate, sodium borohydride, vulcanized sodium, sodium dithionite or ferrous sulfate
Kind.
Preparation method according to the present invention, it is preferable that the step of macromolecule sponge is immersed in graphene aqueous solution it
Before, include the steps that the ultrasonic cleaning of macromolecule sponge, washing and drying.
The third aspect, the present invention provide a kind of above-mentioned graphene composite sponge in processing Oil in Sewage Water organic pollutant
Application.
95% or more, piece diameter≤50 μm, lamellar spacing≤30nm can make to be prepared into the purity of graphene in the present invention
The graphene composite sponge reference area with higher and hydrophobicity arrived has the oiliness organic pollutant in sewage relatively strong
Adsorption capacity.When graphene is graphene oxide, compound is first prepared, then compound is immersed in reducing agent,
Soaking and reducing.Load capacity of the graphene on sponge can be increased in this way, reach better reduction effect, make the stone being prepared
Black alkene composite sponge has stronger adsorption capacity.
Detailed description of the invention
Fig. 1 is graphene composite sponge exterior appearance figure of the invention
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
<graphene composite sponge>
Graphene composite sponge of the invention, is prepared by graphene and macromolecule sponge.Graphene can be oxidation
Graphene or inoxidized graphene.
Graphene in the present invention can be obtained using conventional method.Including but not limited to pass through Hummers method, Brodie
Method, Staudenmaier method, liquid phase stripping method, mechanical stripping method, electrochemical stripping method, chemical vapour deposition technique, epitaxial growth
The methods of method is prepared.A specific embodiment according to the present invention, graphene are prepared by Hummers method.
In the present invention, the purity of graphene is 95% or more, piece diameter≤50 μm, lamellar spacing≤30nm.Preferably, stone
The purity of black alkene is 96% or more.It is highly preferred that the purity of graphene is 98% or more.For example, can be 99%.Preferably,
The piece diameter of graphene is 2~45 μm.It is highly preferred that the piece diameter of black alkene is 20~30 μm.Preferably, the lamellar spacing of graphene is
1~10nm.It is highly preferred that the lamellar spacing of graphene is 5~10nm.It can make the graphene composite sponge being prepared in this way
Specific surface area with higher enhances the adsorption capacity of composite sponge.The piece diameter of graphene is excessive or the lamellar spacing of graphene
The too small mechanical performance that can make graphene declines, and causes graphene brittle；The piece diameter and lamellar spacing of graphene are too small to be will lead to
There is agglomeration in graphene；The lamellar spacing of graphene is excessive or piece diameter is too small can also reduce specific surface area.
In the present invention, graphene can be inoxidized graphene.Preferably, inoxidized graphene can be
Single-layer graphene or multi-layer graphene.
In the present invention, graphene can be graphene oxide.Oxygen carbon molar ratio in graphene oxide is 0.15~
0.65；Preferably 0.2~0.5, more preferable 0.3~0.5.The load factor of graphene in composite sponge can be increased in this way and answered
The hydrophobicity for closing sponge, can be improved graphene composite sponge to the adsorption capacity of Oil in Sewage Water organic pollutant.
In the present invention, macromolecule sponge is selected from polyurethane sponge, melamine sponge, polyvinylalcohol sponge, polyethylene
One of foam or butadiene-styrene rubber foam.Preferably, macromolecule sponge is polyurethane sponge or melamine sponge.More preferably
Ground, macromolecule sponge are polyurethane sponge.
<preparation method of graphene sponge>
The preparation method of graphene composite sponge of the invention, includes the following steps:
(1) graphene is mixed with water, is configured to graphene aqueous solution；
(2) macromolecule sponge is immersed in graphene aqueous solution, obtains compound.
When graphene is inoxidized graphene, compound is graphene composite sponge.
When graphene is graphene oxide, also need by following steps:
(3) compound is immersed in reducing agent solution to get graphene composite sponge.
In the present invention, macromolecule sponge is before being immersed in graphene aqueous solution, also by being cleaned by ultrasonic, washing and do
Dry step.Being cleaned by ultrasonic washing lotion used in step can be water or alcoholic solution.Preferably, washing lotion is alcoholic solution.More preferably
Ground, washing lotion are ethanol solution.The time of ultrasonic cleaning is 1~6h.Preferably, the time of ultrasonic cleaning is 1~4h.More preferably
Ground, the time of ultrasonic cleaning are 2~4h.Washing lotion used in washing step can be water or alcoholic solution.Preferably, water or ethyl alcohol
Solution.A specific embodiment according to the present invention, the macromolecule sponge after ultrasonic cleaning are first washed with deionized, then
Use ethanol washing.Drying temperature is 40~100 DEG C.Preferably, drying temperature is 50~80 DEG C.It is highly preferred that drying temperature is
50~70 DEG C.Graphene oxide can be made preferably to be coated on macromolecule sponge in this way, keep the graphene being prepared compound
Sponge has stronger adsorption capacity.
In the present invention, the concentration of graphene is 1~10mg/ml in graphene aqueous solution.Preferably, the concentration of graphene
For 1~8mg/ml.It is highly preferred that the concentration of graphene is 2~4mg/ml.Graphene aqueous solution can be incited somebody to action by the method for ultrasound
Graphene dispersion is in water.
In the present invention, the volume ratio of macromolecule sponge and graphene aqueous solution is 1:2~6.Preferably, macromolecule sponge
Volume ratio with graphene aqueous solution is 1:2~5.It is highly preferred that the volume ratio of macromolecule sponge and graphene aqueous solution is 1:2
~4.Graphene can be made preferably to be coated on macromolecule sponge in this way, there is the graphene composite sponge being prepared more
Strong adsorption capacity.
It in the present invention, further include the step for removing extra graphene and dry composite object in compound in step (2)
Suddenly.The method for removing extra graphene in compound can be extrusion or centrifugal process.Preferably, the number of extruding is greater than 3
It is secondary.It is highly preferred that the number squeezed is greater than 5 times.It such as can be 5~10 times.Preferably, the revolving speed of centrifugation be 1000~
6000rpm.It is highly preferred that the revolving speed of centrifugation is 2000~4000rpm.Drying temperature is 40~120 DEG C.Preferably, dry temperature
Degree is 50~100 DEG C.It is highly preferred that drying temperature is 60~80 DEG C.Drying time be 8~for 24 hours.Preferably, drying time 8
~20h.It is highly preferred that drying time is 10~15h.The load capacity that graphene can be increased in this way, makes the graphite being prepared
Alkene composite sponge has stronger adsorption capacity.
In the present invention, when graphene be graphene oxide when, reducing agent be ethylenediamine, sodium ascorbate, gallic acid,
One of hydrazine hydrate, sodium borohydride, vulcanized sodium, sodium dithionite or ferrous sulfate.Preferably, reducing agent be ethylenediamine,
Sodium ascorbate or gallic acid.It is highly preferred that reducing agent is sodium ascorbate.It in this way can better reduction-oxidation graphite
Alkene makes that the enhancing of graphene composite sponge hydrophobicity is prepared, has stronger adsorption capacity.
In the present invention, when graphene is graphene oxide, the mass ratio of reducing agent and graphene oxide be 1:0.2~
1.Preferably, the mass ratio of reducing agent and graphene oxide is 1:0.2~0.7.It is highly preferred that reducing agent and graphene oxide
Mass ratio is 1:0.3~0.6.In this way can better redox graphene, make graphene composite sponge is prepared hydrophobic
Property enhancing, have stronger adsorption capacity.
In the present invention, when graphene is graphene oxide, in step (3), compound is immersed in reducing agent solution
Time be 6~18h.Preferably, soaking time is 6~15h.It is highly preferred that soaking time is 6~8h.Soaking temperature is 60
~120 DEG C.Preferably, soaking temperature is 70~110 DEG C.It is highly preferred that soaking temperature is 80~100 DEG C.It in this way can be more preferable
Redox graphene, make to be prepared graphene composite sponge with stronger adsorption capacity.
In the present invention, when graphene is graphene oxide, after the step of compound is immersed in reducing agent solution, also
Include the steps that the compound after impregnating carries out primary drying, washing, ultrasound and redrying.The temperature of primary drying is 40
~150 DEG C.Preferably, the temperature of primary drying is 50~100 DEG C.It is highly preferred that the temperature of primary drying is 50~80 DEG C.One
The time of secondary drying is 12~36h.Preferably, the time of primary drying is 20~30h.It is highly preferred that the time of primary drying
For 20~25h.Redrying temperature is 30~90 DEG C；Preferably 40~80 DEG C；More preferably 50~70 DEG C.The redrying time
For 12~36h；Preferably 20~36h；More preferably 24~30h.
<purposes of graphene composite sponge>
The present invention also provides application of the above-mentioned graphene composite sponge in the processing of Oil in Sewage Water organic pollutant.It is preferred that
Ground, oiliness organic pollutant are phenols oiliness organic pollutant.A specific embodiment according to the present invention, oiliness are organic
Pollutant is phenol.
Embodiment 1
Weighing 120mg graphene oxide, (purity 99%, piece diameter are 30 μm, lamellar spacing 10nm, and oxygen carbon molar ratio is
0.4) it, is dissolved in water, ultrasonic disperse, preparation obtains 60ml graphene oxide water solution.
Volume is cleaned into 2h with EtOH Sonicate for 3cm × 3cm × 2cm polyurethane sponge, the polyurethane sponge after ultrasound
Repeatedly with deionized water repeated washing, then with ethanol washing, the drying at 60 DEG C.
Polyurethane sponge after cleaning-drying is immersed in graphene oxide water solution, squeezes 5 times, removes extra oxygen
Graphite alkene, then the dry 10h at 60 DEG C, obtains compound.
240mg sodium ascorbate is dissolved in the water, sodium ascorbate solution is obtained；By compound under the conditions of 80 DEG C,
6h is impregnated in sodium ascorbate solution；Compound after immersion is dried for 24 hours at 60 DEG C；By the compound after drying in water
Middle washing, ultrasound, drying for 24 hours, obtains graphene composite sponge at 65 DEG C.
Embodiment 2
It weighs the inoxidized graphene of 120mg (purity 98%, piece diameter are 20 μm, lamellar spacing 4nm), its is molten
In Xie Yushui, ultrasonic disperse, configuration obtains the inoxidized graphene aqueous solution of 60ml.
Volume is cleaned into 2h with EtOH Sonicate for 3cm × 3cm × 2cm polyurethane sponge, the polyurethane sponge after ultrasound
Repeatedly with deionized water repeated washing, then with ethanol washing, the drying at 60 DEG C.
Polyurethane sponge after cleaning-drying is immersed in inoxidized graphene aqueous solution, with turning for 3000rpm
Speed is centrifuged out extra inoxidized graphene, and then the dry 10h at 60 DEG C, obtains graphene composite sponge.
Embodiment 3
Weighing 120mg graphene oxide, (purity 96%, piece diameter are 10 μm, lamellar spacing 15nm, and oxygen carbon molar ratio is
0.2) it, is dissolved in water, ultrasonic disperse, configuration obtains 60ml graphene oxide water solution.
Volume is cleaned into 2h with EtOH Sonicate for 3cm × 3cm × 2cm melamine sponge, the melamine after ultrasound
Sponge is washed repeatedly repeatedly with deionized water, then with ethanol washing, the drying at 60 DEG C.
Melamine sponge after cleaning-drying is immersed in graphene oxide water solution, with the revolving speed of 4000rpm from
The heart goes out extra graphene oxide, and then the dry 10h at 60 DEG C, obtains compound.
240mg sodium ascorbate is dissolved in the water, sodium ascorbate solution is obtained；Condition by compound at 95 DEG C
Under, 10h is impregnated in sodium ascorbate solution；Compound after immersion is dried for 24 hours at 60 DEG C；By the compound after drying
It washs in water, ultrasound, dry 30h, obtains graphene composite sponge at 70 DEG C.
Comparative example 1
Volume is cleaned into 2h with EtOH Sonicate for 3cm × 3cm × 2cm polyurethane sponge, the polyurethane sponge after ultrasound
With deionized water repeated washing repeatedly, then use ethanol washing, at 60 DEG C dry, obtain cleaning sponge.
Experimental example
The adsorption capacity for the graphene composite sponge Pyrogentisinic Acid that Examples 1 to 3 is prepared is tested, test method
It is as follows:
Graphene composite sponge is fitted into adsorptive reactor, the solution containing phenol is flowed into adsorptive reactor, inspection
Measure the concentration of mouthful Phenol in Aqueous Solution.Calculate adsorptive reactor processing total solution volume and Phenol in Aqueous Solution before and after the processing it is dense
Degree, calculates the adsorbance of Pyrogentisinic Acid.The concentration of Phenol in Aqueous Solution tests to obtain by ultraviolet spectrophotometry.As a result such as following table
It is shown:
Table 1
| Test sample | Adsorbance (the phenol g/ graphene g) of phenol |
| Embodiment 1 | 1.6 |
| Embodiment 2 | 1.2 |
| Embodiment 3 | 0.8 |
It is tested, is detected using adsorbance of the same method to the cleaning sponge Pyrogentisinic Acid that comparative example 1 is prepared
Adsorptive reactor entrance and the content of exit Phenol in Aqueous Solution do not change out, and polyurethane sponge Pyrogentisinic Acid does not have adsorption energy
Power.
Present invention is not limited to the embodiments described above, without departing from the essence of the present invention, this field skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.
Claims (10)
1. a kind of graphene composite sponge, which is characterized in that the graphene composite sponge is by graphene and macromolecule sponge
It is prepared；The graphene is graphene oxide or inoxidized graphene；The purity of the graphene is 95%
More than, piece diameter≤50 μm, lamellar spacing≤30nm.
2. graphene composite sponge according to claim 1, which is characterized in that the graphene is graphene oxide,
Oxygen carbon molar ratio is 0.15~0.65 in the graphene oxide.
3. the dilute composite sponge of graphite according to claim 1, which is characterized in that the macromolecule sponge is selected from polyurethane
One of sponge, melamine sponge, polyvinylalcohol sponge, polyethylene foam or butadiene-styrene rubber foam.
4. a kind of preparation method of graphene composite sponge described in claim 1, which comprises the steps of:
(1) graphene is mixed with water, is configured to graphene aqueous solution；
(2) macromolecule sponge is immersed in graphene aqueous solution, obtains compound；
Wherein, when graphene is inoxidized graphene, compound is graphene composite sponge；When graphene is oxidation
When graphene, also need that compound is immersed in reducing agent solution to get graphene composite sponge by step (3).
5. the preparation method according to claim 4, which is characterized in that the volume ratio of macromolecule sponge and graphene aqueous solution
For 1:2~6.
6. the preparation method according to claim 4, which is characterized in that the concentration of graphene in the graphene aqueous solution
For 1~10mg/ml.
7. the preparation method according to claim 4, which is characterized in that when graphene is graphene oxide, described is gone back
The mass ratio of former agent and graphene oxide is 1:0.2~1.
8. the preparation method according to claim 4, which is characterized in that when graphene is graphene oxide, described is gone back
Former agent is selected from ethylenediamine, sodium ascorbate, gallic acid, hydrazine hydrate, sodium borohydride, vulcanized sodium, sodium dithionite or sulfuric acid
One of ferrous iron.
9. the preparation method according to claim 4, which is characterized in that macromolecule sponge is being immersed in graphene aqueous solution
The step of before, include the steps that for macromolecule sponge being cleaned by ultrasonic, washing and dry.
10. a kind of described in any item graphene composite sponges of claims 1 to 3 are in processing Oil in Sewage Water organic pollutant
Application.
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| CN111229168A (en) * | 2020-02-14 | 2020-06-05 | 上海第二工业大学 | Method for recovering high-viscosity leaked crude oil by using graphene-based material |
| CN111849023A (en) * | 2020-07-14 | 2020-10-30 | 浙江大学 | Graphene-based melamine foam, and preparation method and application thereof |
| CN113097604A (en) * | 2021-04-02 | 2021-07-09 | 信骅(上海)器材有限公司 | Special graphene heat dissipation assembly with low thermal resistance, high compressibility and buffering function for electric automobile and preparation method of special graphene heat dissipation assembly |
| CN113736133A (en) * | 2021-09-24 | 2021-12-03 | 北京美斯顿科技开发有限公司 | Graphene-based sponge and preparation method and application thereof |
| CN115193409A (en) * | 2022-07-15 | 2022-10-18 | 中国石油大学(华东) | Photo-thermal adsorption heavy oil material based on modified melamine sponge, and preparation and application thereof |
| IT202200000005A1 (en) * | 2022-01-03 | 2023-07-03 | Elettrotecnica Rold Srl | INNOVATIVE SOLUTION FOR WATER SOFTENING |
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| CN110711565B (en) * | 2019-09-30 | 2020-10-30 | 北京石墨烯技术研究院有限公司 | Vulcanized graphene sponge composite material and preparation method and application thereof |
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| CN113736133A (en) * | 2021-09-24 | 2021-12-03 | 北京美斯顿科技开发有限公司 | Graphene-based sponge and preparation method and application thereof |
| IT202200000005A1 (en) * | 2022-01-03 | 2023-07-03 | Elettrotecnica Rold Srl | INNOVATIVE SOLUTION FOR WATER SOFTENING |
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