CN110183723A - Graphene-based oil suction sponge and its preparation method and application - Google Patents
Graphene-based oil suction sponge and its preparation method and application Download PDFInfo
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- CN110183723A CN110183723A CN201910567799.5A CN201910567799A CN110183723A CN 110183723 A CN110183723 A CN 110183723A CN 201910567799 A CN201910567799 A CN 201910567799A CN 110183723 A CN110183723 A CN 110183723A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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Abstract
The invention discloses a kind of graphene-based oil suction sponges and its preparation method and application.The preparation method includes: that sponge is carried out pretreatment cleaning by (1), is dried to obtain pretreatment sponge；(2) it adds graphene oxide into water and disperses, obtain graphene oxide water solution；(3) pretreatment sponge is immersed in graphene oxide water solution, then takes out, immerse in reducing agent aqueous solution, reduction reaction is carried out at 65~85 DEG C, is cooled to room temperature, obtains graphite oxide alkenyl sponge；(4) graphite oxide alkenyl sponge is soaked in concentration is in 1~20vol% ethanol water or in deionized water, and soaking time is no less than 10h, then obtains graphene-based oil suction sponge by being dried.Graphene-based oil suction sponge of the invention has good hydrophobic performance.
Description
Technical field
The present invention relates to a kind of graphene-based oil suction sponges and its preparation method and application.
Background technique
With the fast development of petrochemical industry, occurs Oil spills thing in oil exploitation, refining, transportational process
Therefore used in chemical industry and organic solvent discharging, this is all inevitable, and serious dirt can be all caused to environment
Dye.Therefore, scientists from all over the world develop various adsorbents and are used for water-oil separating.Conventional adsorbent for oils and organic solvent has
Zeolite, flyash, active carbon, oil-absorbing resin, commercial sponge etc..That there are adsorption efficiencies is low for these adsorbents, and recycling rate is poor,
Complex process, not environmentally the disadvantages of.
Graphene aerogel is due to its superelevation voidage, high resilience, excellent both thermally and chemically stability and super thin
It is aqueous that there is very high adsorptivity to oils and organic solvent.But the mechanical performance and three-dimensional framework of pure graphene aerogel
Anti-fatigue performance it is poor, be easy to be broken；Applicability is lower in actual water-oil separating and the absorption of organic solvent, limits
Its industrial applications.
A kind of three-dimensional porous oil absorption material by graphene coated sponge of Britain " energy and environment science " magazine ran,
The material passes through removing soft graphite first and obtains graphene nanometer sheet, and is dispersed in ethanol solution, then by melamine
Sponge is impregnated in the above solution, and the sponge three-dimensional porous structure of graphene coated is obtained, which has good hydrophobicity,
But in this method preparation process, graphene film is smaller, and the clad ratio of sponge skeleton is not high, exposed hydrophily spongy bone easily occurs
Frame reduces its separating effect.The lapping that this method uses is graphene nanometer sheet, and preparation process is complicated, it is difficult to industry
Metaplasia produces.CN108722347A discloses a kind of graphene oil suction sponge, by carrying out the graphene in graphene aqueous solution
It is modified, then sponge is immersed in modified graphene aqueous solution, high temperature reduction is carried out after immersion, obtains graphene oil suction
Sponge.It can be used for the fields such as oil exploitation, industrial oil pollutant separation with good hydrophobic performance.But due to
Graphene oil suction sponge preparation uses high temperature reduction technique, needs a large amount of graphene solution to be soaked when preparing unit sponge
Bubble, material consumption are high；In order to obtain higher hydrophobic performance, the graphene needs used are modified, and further improve material consumption, work
Skill is complicated, and preparation cost is higher.CN108239253A discloses a kind of graphene polyurethane sponge, using polyether polyol, amine
Catalyst, tin catalyst, foam stabiliser, water and be that model modifying agent is added in material barrel by weight, after stirring again plus
Enter isocyanates to foam, cures and graphene polyurethane sponge is made.This method complex process, it is at high cost.
It is good that a kind of oil-water separation is researched and developed as a result, and preparation process is simple, graphene-based adsorbent material at low cost
It is very necessary.
Summary of the invention
In view of this, it is an object of the present invention to provide a kind of preparation method of graphene-based oil suction sponge, it is described
Preparation method is without secondary pollution, can stablize and prepare graphene-based oil suction sponge.
It is another object of the present invention to provide a kind of graphene-based oil suction sponges, have stronger water-oil separating performance.
In addition, graphene-based oil suction sponge of the invention can realize circulation absorption-desorption by way of extruding.
It is yet a further object of the present invention to provide a kind of application of graphene-based oil suction sponge in water-oil separating field.
The present invention adopts the following technical scheme that realization above-mentioned purpose.
On the one hand, the present invention provides a kind of preparation method of graphene-based oil suction sponge, includes the following steps:
(1) sponge is subjected to pretreatment cleaning, is dried to obtain pretreatment sponge；
(2) it adds graphene oxide into water and disperses, obtain graphene oxide water solution；
(3) pretreatment sponge is immersed in graphene oxide water solution, then takes out, immerses in reducing agent aqueous solution,
Reduction reaction is carried out at 65~85 DEG C, is cooled to room temperature, and graphite oxide alkenyl sponge is obtained；
(4) by graphite oxide alkenyl sponge be soaked in concentration be 1~20vol% ethanol water in or deionized water
In, soaking time is no less than 10h, then obtains graphene-based oil suction sponge by being dried.
Preparation method according to the present invention, it is preferable that in step (1), pretreatment cleaning in turn includes the following steps:
(a) sponge is placed in dehydrated alcohol and is cleaned by ultrasonic；
(b) sponge is placed in deionized water and is cleaned by ultrasonic；
(c) sponge is cleaned with distilled water immersion.
Preparation method according to the present invention, it is preferable that in step (2), the graphene oxide is non-modified dose of modification
Graphene oxide；The modifying agent is selected from gamma-aminopropyl-triethoxy-silane, gamma-methyl allyl acyloxypropyl trimethoxy
One or more of silane, boron oxide, butyl titanate oleyl amine, 3-mercaptopropyi trimethoxy silane.
Preparation method according to the present invention, it is preferable that in step (2), the piece diameter of the graphene oxide is 1~50 μm.
Preparation method according to the present invention, it is preferable that in step (2), the concentration of graphene oxide water solution is 1~
10mg/ml；In step (3), the concentration of reducing agent aqueous solution is 2~15mg/ml, the graphite oxide in graphene oxide water solution
The mass ratio of reducing agent in alkene and reducing agent aqueous solution is 1:1~6.
Preparation method according to the present invention, it is preferable that in step (3), the reducing agent be selected from ascorbic acid, ethylenediamine,
One of sodium tetraborate, oxalic acid and potassium iodide compound, hydroiodic acid are a variety of.
Preparation method according to the present invention, it is preferable that in step (4), drying process carries out at normal pressure and 30~85 DEG C.
On the other hand, the present invention provides the graphene-based oil suction sponge that above-mentioned preparation method is prepared.
In another aspect, the present invention provides application of the above-mentioned graphene-based oil suction sponge in water-oil separating field.
Application according to the present invention, it is preferable that the oily substance in the water-oil separating field is selected from n-hexane, 12
One of alkane, toluene, acetone, kerosene, pump oil, gasoline, diesel oil, lubricating oil are a variety of.
Graphene-based oil suction sponge of the invention has high hydrophobicity performance, and grease point works well, and preparation process is simple
It is without secondary pollution, it is at low cost, there is huge application prospect in water-oil separating field.
Detailed description of the invention
Fig. 1 is the comparison diagram for shoot when oil absorption capacity test by sample prepared by comparative example and embodiment 1.
Fig. 2 is the Line Chart that sample prepared by embodiment 1 repeatedly extrudes ten oil absorptions and number is done.
Fig. 3 is that the sample surfaces of embodiment 1 instill the picture shot after a drop water.
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.
The preparation method > of the graphene-based oil suction sponge of <
Sponge is immersed in graphene oxide water solution and is sufficiently impregnated, then sponge is immersed in reducing agent aqueous solution and is gone back
Original reaction, then takes out, and obtains graphene-based oil suction sponge by being dried.By the above method by graphene oxide with gas
The form of gel is coated on sponge support frame and obtains graphene-based oil suction sponge, has good water-oil separating performance, work
Skill is simple, cheap at low cost, is conducive to promote on a large scale in water-oil separating field.
In the present invention, the concentration of graphene oxide water solution can be 1~10mg/ml, preferably 1~6mg/ml, more
Preferably 1~3mg/ml.The concentration of reducing agent aqueous solution be 2~15mg/ml, preferably 4~15mg/ml, more preferably 4~
10mg/ml.Wherein, the mass ratio of the reducing agent in the graphene oxide and reducing agent aqueous solution in graphene oxide water solution is
1:1~6, preferably 1:2~6, more preferably 1:2~5.Using the graphene oxide water solution and reducing agent of above-mentioned concentration range
The mass ratio of aqueous solution and graphene oxide and reducing agent can guarantee sponge skeleton completely by graphene aerogel packet
Under the premise of covering, the dosage of material consumption, especially graphene oxide is reduced, reduces preparation cost.
Preparation method of the invention may include steps of: (1) sponge pre-treatment step；(2) graphene oxide is water-soluble
Liquid preparation step；(3) graphite oxide alkenyl sponge preparation step and (4) graphene-based oil suction sponge preparation step.Step (1)
It is limited with step (2) without sequencing.
In step (1), sponge is subjected to pretreatment cleaning step, is dried to obtain pretreatment sponge.Cleaning treatment can be with
Include the following steps: that sponge is placed in dehydrated alcohol by (a) to be cleaned by ultrasonic；(b) sponge is placed in deionized water and is carried out
Ultrasonic cleaning；(c) sponge is cleaned with distilled water immersion.According to embodiment of the present invention, cleaning treatment can be successively
Include the following steps: that sponge is placed in dehydrated alcohol by (a) to be cleaned by ultrasonic；(b) sponge is placed in deionized water and is carried out
Ultrasonic cleaning；(c) sponge is cleaned with distilled water immersion.It, can be by the solid and gas in sponge using above-mentioned pre-treatment step
Body impurity, residue and adsorbate remove, to ensure the cleannes of cleaning sponge.In the present invention to the material of sponge without spy
It does not limit, preferably one of polyurethane sponge or melamine sponge, more preferably melamine sponge.Experiment card
It is bright, graphene oxide dosage can be further decreased using melamine sponge, to reduce preparation cost.
According to embodiment of the present invention, sponge is carried out cleaning pre-treatment step as follows in order: sponge is set
It is cleaned by ultrasonic in dehydrated alcohol；Then sponge is placed in deionized water and is cleaned by ultrasonic；Finally sponge is steamed
Distilled water soaking and washing；Again by the sponge of the above-mentioned cleaning step of process at 60~80 DEG C, preferably 65~75 DEG C, more preferably 65~
It is dry at 70 DEG C, obtain pretreatment sponge.
In step (2), adds graphene oxide into water and disperse, obtain graphene oxide water solution.The present invention uses
Graphene oxide be non-modified dose of modified graphene oxide；Usually the modifying agent that graphene oxide is modified is selected from
Gamma-aminopropyl-triethoxy-silane, gamma-methyl allyl acyloxypropyl trimethoxysilane, boron oxide, butyl titanate oleyl amine,
One or more of 3-mercaptopropyi trimethoxy silane.Graphene oxide is modified using above-mentioned modifying agent, it can be with
Increase the hydrophobic performance of graphene oxide, but modified technique is complicated, increases preparation cost, and above-mentioned modifying agent is easily to ring
Border generates secondary pollution.The piece diameter for the graphene oxide that the present invention uses can be 1~50 μm, preferably 5~40 μm, more preferably
It is 10~25 μm.Using the graphene oxide of sheet above gauge structure, preferably enter sponge skeletal internal, and sponge is completely covered
Skeleton is further reduced the dosage of graphene oxide, reduces material consumption and preparation cost.
In step (3), pretreatment sponge is immersed in graphene oxide water solution, it is water-soluble to then take out immersion reducing agent
Reduction reaction is carried out in liquid, is then cooled to room temperature, and graphite oxide alkenyl sponge is obtained.Reduction temperature can be 65~85 DEG C,
Preferably 70~85 DEG C, more preferably 75~80 DEG C.Reduction reaction is carried out using above-mentioned temperature range, can faster be restored
Graphite oxide aerogel is generated, and does not influence the physical and chemical performance of sponge, excessively high reduction temperature be easy to cause sponge
Aging influences service life and mechanical performance.Reducing agent is selected from ascorbic acid, ethylenediamine, sodium tetraborate, oxalic acid and potassium iodide
One or more of compounding, hydroiodic acid；Preferably reducing agent be selected from one of ascorbic acid, ethylenediamine, sodium tetraborate or
It is several；It is more preferably preferably one or both of ascorbic acid and ethylenediamine mixture.Using above-mentioned reducing agent, Ke Yijin
One step reduces the dosage of graphene oxide, reduces material consumption and preparation cost.
In step (4), graphite oxide alkenyl sponge is soaked in ethanol water, is then obtained by being dried
Graphene-based oil suction sponge.The concentration of ethanol water can be 1~20vol%, preferably 1~10vol%, more preferably 1
~8vol%.Soaking time is no less than 10h, preferably 12~48h, more preferably 24~36h.Using the ethanol water of concentration range
Solution is impregnated, and by impurity and can be had neither part nor lot in the solute of reaction and is washed off, and graphite oxide aerogel can be made more preferable
It is more completely covered on the surface of sponge skeleton, makes to increase oil absorption, reduces the dosage of graphene oxide.The condition of drying process can
30~85 DEG C, preferably 30~70 DEG C, more preferably 30~60 DEG C are thought under normal pressure.It is dried using above-mentioned temperature range,
Do not influence the hydrophobic performance and absorption property of the graphene-based oil suction sponge of preparation.
In some embodiments of the present invention, by graphite oxide alkenyl sponge be soaked in deionized water impregnate 24~
Then 36h obtains graphene-based oil suction sponge by being dried at 30~60 DEG C of normal pressure.
The graphene-based oil suction sponge > of <
The present invention also provides a kind of graphene-based oil suction sponges, are prepared using above-mentioned preparation method.Here no longer superfluous
It states.Graphene-based oil suction sponge of the invention is combined using sponge and graphene oxide, and graphene oxide is covered with aerogel form
The surface in sponge skeleton is covered, there is high hydrophobicity energy and water-oil separating performance, and preparation cost is low, simple process, without two
Secondary pollution is advantageously implemented large-scale production, has huge application prospect in water-oil separating field.Of the invention is graphene-based
Oil suction sponge can realize adsorption-desorption by way of extruding, can be recycled, and realize continuous production.
The graphene-based oil suction sponge of < applies >
Graphene-based oil suction sponge of the invention is used in water-oil separating field, due to its good hydrophobic performance, almost
It does not absorb water, it can be achieved that water-oil separating.Oily substance in water-oil separating field of the invention include n-hexane, dodecane, toluene,
Acetone, kerosene, pump oil, gasoline, diesel oil, lubricating oil.Preferably, oily substance is selected from n-hexane, dodecane, toluene, acetone, coal
One or more of oil, pump oil, gasoline, diesel oil, lubricating oil.
Raw material used in embodiment and comparative example is described below:
Graphene oxide: Changzhou No.6 Element Material Technology Co., Ltd..
Embodiment 1
(1) by 2 × 2 × 1cm3Melamine sponge, which is sequentially placed into dehydrated alcohol and deionized water, to be cleaned by ultrasonic, then
It is washed with a large amount of distilled water immersions, is drained after taking-up, the dry 2h at 65 DEG C obtains pretreatment sponge.
(2) 40mg graphene oxide is added in 20ml water and is dispersed, be allowed to be uniformly dispersed by sonic oscillation 30min, obtain
The graphene oxide water solution for being 2mg/ml to concentration.
(3) sponge will be pre-processed to immerse in the graphene oxide water solution that concentration is 2mg/ml, squeezes the pretreatment of immersion
Sponge three times, is substantially adhered to graphene oxide on pretreatment sponge matrix, and sponge is then taken out immersion 20ml concentration and is
In the aqueous ascorbic acid of 4mg/ml, reduction reaction 6h is carried out at 80 DEG C, is cooled to room temperature, obtain graphite oxide alkenyl sea
It is continuous.
(4) graphite oxide alkenyl sponge is soaked in deionized water, is impregnated for 24 hours, then by being dried at 30 DEG C
For 24 hours, graphene-based oil suction sponge sample is obtained, it is spare.
Embodiment 2
(1) by 2 × 2 × 1cm3Melamine sponge, which is sequentially placed into dehydrated alcohol and deionized water, to be cleaned by ultrasonic, then
It is washed with a large amount of distilled water immersions, is drained after taking-up, the dry 2h at 65 DEG C obtains pretreatment sponge.
(2) 100mg graphene oxide is added in 20ml water and is dispersed, be allowed to be uniformly dispersed by sonic oscillation 30min, obtain
The graphene oxide water solution for being 5mg/ml to concentration.
(3) sponge will be pre-processed to immerse in the graphene oxide water solution that concentration is 5mg/ml, squeezes the pretreatment of immersion
Sponge three times, is substantially adhered to graphene oxide on pretreatment sponge matrix, and sponge is then taken out immersion 20ml concentration and is
In the aqueous ascorbic acid of 10mg/ml, reduction reaction 6h is carried out at 80 DEG C, is cooled to room temperature, obtain graphite oxide alkenyl
Sponge.
(4) graphite oxide alkenyl sponge is soaked in deionized water, is impregnated for 24 hours, then by being dried at 30 DEG C
For 24 hours, graphene-based oil suction sponge sample is obtained, it is spare.
Embodiment 3
(1) by 2 × 2 × 1cm3Melamine sponge, which is sequentially placed into dehydrated alcohol and deionized water, to be cleaned by ultrasonic, then
It is washed with a large amount of distilled water immersions, is drained after taking-up, the dry 2h at 65 DEG C obtains pretreatment sponge.
(2) 60mg graphene oxide is added in 20ml water and is dispersed, being uniformly dispersed for 30min is made by sonic oscillation, is obtained
The graphene oxide water solution for being 3mg/ml to concentration.
(3) sponge will be pre-processed to immerse in the graphene oxide water solution that concentration is 3mg/ml, squeezes the pretreatment of immersion
Sponge three times, is substantially adhered to graphene oxide on pretreatment sponge matrix, and sponge is then taken out immersion 20ml concentration and is
In the aqueous ascorbic acid of 10mg/ml, reduction reaction 6h is carried out at 80 DEG C, is cooled to room temperature, obtain graphite oxide alkenyl
Sponge.
(4) graphite oxide alkenyl sponge is soaked in deionized water, is impregnated for 24 hours, then by being dried at 30 DEG C
For 24 hours, graphene-based oil suction sponge sample is obtained, it is spare.
Comparative example 1
Melamine sponge is sequentially placed into dehydrated alcohol and deionized water and is cleaned by ultrasonic, then with a large amount of distillation water loggings
Foam washing is washed, and is drained, and the dry 2h at 65 DEG C obtains pretreatment melamine sponge sample, and being cut into volume is 2 × 2 × 1cm3It is standby
With.
Experimental example
Oil absorption capacity test:
(1) sample prepared by Examples 1 to 3 and comparative example 1 is gently placed on to the flask for being contained with certain volume gasoline
In, time for observing each sample swelling rate and being completely immersed in gasoline；
(2) Examples 1 to 3 is completely immersed in the sample in gasoline to take out, is sufficiently squeezed, weighs the vapour squeezed out
Oil, to calculate the oily adsorbance of each sample.
Contact angle test:
Using contact angle tester, by deionized water drop in sample surfaces, form dropping liquid drop, then tester shooting at
Picture directly measures contact angle with protractor.
Fig. 1 is the comparison diagram for shoot when oil absorption capacity test by sample prepared by comparative example 1 and embodiment 1.Comparison
Pretreatment melamine prepared by example 1 swims in the upper surface of gasoline in the case where not applying pressure for a long time, and implements
Graphene-based oil suction sponge prepared by example 1 is sunk to soon inside gasoline, shows that graphene aerogel and sponge act synergistically, pole
The earth improves the oil absorption capacity of sponge.
Fig. 2 is the Line Chart that sample prepared by embodiment 1 repeatedly extrudes ten oil absorptions and number is done.As seen from the figure,
After being recycled 10 times, sample is still able to maintain the 85.3% of first oil absorption.After absorption 3 times, adsorbance base
This stabilization.This illustrates that sample has good circulation absorption ability, is expected to be used continuously in water-oil separating field.
Fig. 3 is that the sample surfaces of embodiment 1 instill the picture shot after a drop water, and as seen from the figure, sample has very high
Hydrophobicity.The sample of Examples 1 to 3 preparation is subjected to contact angle test, test result is shown in Table 1.The results show that Examples 1 to 3
The sample of preparation has good hydrophobic performance.
Table 1
| Test sample | Hydrophobic angle (°) |
| Embodiment 1 | 141.5 |
| Embodiment 2 | 139.6 |
| Embodiment 3 | 143.3 |
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 preparation method of graphene-based oil suction sponge, which comprises the steps of:
(1) sponge is subjected to pretreatment cleaning, is dried to obtain pretreatment sponge；
(2) it adds graphene oxide into water and disperses, obtain graphene oxide water solution；
(3) pretreatment sponge is immersed in graphene oxide water solution, then takes out, immerses in reducing agent aqueous solution, 65~
Reduction reaction is carried out at 85 DEG C, is cooled to room temperature, and graphite oxide alkenyl sponge is obtained；
(4) graphite oxide alkenyl sponge is soaked in concentration is leaching in 1~20vol% ethanol water or in deionized water
The bubble time is no less than 10h, then obtains graphene-based oil suction sponge by being dried.
2. preparation method according to claim 1, which is characterized in that in step (1), pretreatment cleaning successively includes as follows
Step:
(a) sponge is placed in dehydrated alcohol and is cleaned by ultrasonic；
(b) sponge is placed in deionized water and is cleaned by ultrasonic；
(c) sponge is cleaned with distilled water immersion.
3. preparation method according to claim 1, which is characterized in that in step (2), the graphene oxide is without changing
Property the modified graphene oxide of agent；The modifying agent is selected from gamma-aminopropyl-triethoxy-silane, gamma-methyl allyl acyloxypropyl
One or more of trimethoxy silane, boron oxide, butyl titanate oleyl amine, 3-mercaptopropyi trimethoxy silane.
4. preparation method according to claim 1, which is characterized in that in step (2), the piece diameter of the graphene oxide is
1~50 μm.
5. preparation method according to claim 1, which is characterized in that in step (2), the concentration of graphene oxide water solution
For 1~10mg/ml；In step (3), the concentration of reducing agent aqueous solution is 2~15mg/ml, the oxygen in graphene oxide water solution
The mass ratio of reducing agent in graphite alkene and reducing agent aqueous solution is 1:1~6.
6. preparation method according to claim 5, which is characterized in that in step (3), the reducing agent is selected from Vitamin C
One of acid, ethylenediamine, sodium tetraborate, oxalic acid and potassium iodide compound, hydroiodic acid are a variety of.
7. preparation method according to claim 6, which is characterized in that in step (4), be dried in normal pressure and 30~85
It is carried out at DEG C.
8. the graphene-based oil suction sponge that described in any item preparation methods are prepared according to claim 1~7.
9. application of the graphene-based oil suction sponge according to claim 8 in water-oil separating field.
10. application according to claim 9, which is characterized in that the oily substance in the water-oil separating field is selected from just
One of hexane, dodecane, toluene, acetone, kerosene, pump oil, gasoline, diesel oil, lubricating oil are a variety of.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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