CN106861657A - Double sponge adsorbed films of redox graphene polyurethane and its preparation method and application - Google Patents
Double sponge adsorbed films of redox graphene polyurethane and its preparation method and application Download PDFInfo
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- CN106861657A CN106861657A CN201710169836.8A CN201710169836A CN106861657A CN 106861657 A CN106861657 A CN 106861657A CN 201710169836 A CN201710169836 A CN 201710169836A CN 106861657 A CN106861657 A CN 106861657A
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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
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
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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
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
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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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2101/305—Endocrine disruptive agents
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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
- C02F2101/306—Pesticides
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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
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
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Abstract
The invention discloses double sponge adsorbed films of a kind of redox graphene polyurethane and its preparation method and application, the double sponge adsorbed films of redox graphene polyurethane include redox graphene cavernous body and polyurethane hot pressing sponge membrane, the redox graphene cavernous body be uniformly filled in the hole of polyurethane hot pressing sponge membrane and with polyurethane hot pressing sponge membrane physical bond.Its preparation method is comprised the following steps：（1）The preparation of graphene oxide polyurethane sponge dispersion liquid；（2）Freeze-drying；（3）Hot pressing film forming.The double sponge adsorbed films of the redox graphene polyurethane have the advantages that absorption property is good, pollutant efficiency high in removal water body, can large scale prepare and easily reclaim and can Reusability, preparation method process is simple, the low cost are expected to realize industrialized production.
Description
Technical field
The invention belongs to technical field of membrane separation, more particularly to a kind of double sponge absorption of redox graphene-polyurethane
Film and its preparation method and application.
Background technology
The improvement of the pollutants such as dyes, heavy metal, antibiotic, greasy dirt and benzene series organic matter has turned into social wide
General focus of attention.These pollutants are lived to human being's production, healthy and surrounding ecological environment brings huge harm.Mesh
Before, the method for effectively administering these pollutants mainly has the modes such as absorption method, hyperfiltration, flocculent precipitation, wherein absorption method
It is to use as extensive sewage treatmentmethod at present, it has the advantages that the rate of adsorption higher, advantages of good adsorption effect.And have
High-specific surface area, the high-performance sorbing material of strong adsorption effect are mains direction of studying at present in research field is adsorbed.Its
In, spongiform grapheme material is a kind of new and effective adsorbent, because it has specific surface area big, the spy such as advantages of good adsorption effect
Point, is the novel absorption material very with potentiality.But its bad mechanical property, is particularly difficult to be kept under the conditions of large scale
Original structure, therefore its range of application is significantly limit, another weak point is that spongiform grapheme material is being inhaled
Easily it is deposited in water body after attached saturation toxic pollutant, causes sludge largely to store, it is difficult to recycle, easily triggers water body
Secondary pollution.It would therefore be highly desirable to research and develop with high absorption capacity, can be prepared with large scale and effectively can have suction high by Reusability
The New Environment Protection Technology of attached performance.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided a kind of absorption property is good, go water removal
Pollutant efficiency high in body, can large scale prepare and easily reclaim and the double seas of repeatedly used redox graphene-polyurethane
Continuous adsorbed film, correspondingly provides the double sponge adsorbed films of above-mentioned redox graphene-polyurethane of a kind of process is simple, low cost
Preparation method, correspondingly, also provide a kind of double sponge adsorbed films of above-mentioned redox graphene-polyurethane in adsorbed water body
Application in middle pollutant.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of double sponge adsorbed films of redox graphene-polyurethane, including redox graphene cavernous body and polyurethane heat
Pressure sponge membrane, the redox graphene cavernous body is uniformly filled in the hole of polyurethane hot pressing sponge membrane and and polyurethane
Hot pressing sponge membrane physical bond.
The double sponge adsorbed films of above-mentioned redox graphene-polyurethane, it is preferred that the redox graphene-poly-
The thickness of the double sponge adsorbed films of urethane is 1mm~5mm.
Used as a total inventive concept, the present invention also provides a kind of redox graphene-polyurethane double sponge absorption
The preparation method of film, comprises the following steps：
（1）Polyurethane sponge body is added in the dispersion liquid of graphene oxide, graphene oxide is entered under ultrasound condition
To in the hole of polyurethane sponge body, graphene oxide-polyurethane sponge dispersion liquid is obtained；
（2）By step（1）The graphene oxide of gained-polyurethane sponge dispersion liquid carries out freeze-drying, makes graphene oxide
Graphene oxide cavernous body is formed, the double sponge complexs of graphene oxide-polyurethane are obtained；
（3）By step（2）The double sponge complexs of the graphene oxide-polyurethane of gained carry out hot pressing, make the polyurethane sponge bodily form
Generating polyurethane hot pressing sponge membrane, and graphene oxide cavernous body is reduced to redox graphene cavernous body, obtain oxygen reduction
The double sponge adsorbed films of graphite alkene-polyurethane.
The preparation method of the double sponge adsorbed films of above-mentioned redox graphene-polyurethane, it is preferred that the step（1）
In, in the dispersion liquid of the graphene oxide, decentralized medium is water, and the concentration of graphene oxide is 2mg/L~20mg/L.
It is furthermore preferred that the Surface coating of graphene oxide has surfactant, surfactant includes silane coupler, ten
One or more in six sodium alkyl sulfonates, Dodecydimethylammonium bronides.
Wherein, it would however also be possible to employ modified graphene oxide replaces graphene oxide, modified graphene oxide includes ammonia
Base graphene oxide, sulfonated graphene oxide or it is coupling agent modified after Graphene derivative.
Preferably, the step（1）In, the polyurethane sponge body includes that EU foaming body, polyester-type gather
Urethane foaming body or the composite foamed body containing polyurethane.
Preferably, the step（1）In, prepared by the dispersion liquid of graphene oxide can use following methods but not limit to：
Take 0.5.~5.0g natural flake graphites powder and 1.0~3.0g sodium nitrate is slowly added into 46~120mL's after precooling
In the concentrated sulfuric acid, mixed liquor A is obtained；Mixed liquor A is placed under condition of ice bath and stirs 30~60min；Weigh total amount for 6.0~
10 additions of 15.0g potassium permanganate point are above-mentioned, and by mixed liquor A, period system temperature is not higher than 5 DEG C and quickly stirs 2~5h,
Obtain mixed liquid B；Continue to stir 3~10h during mixed liquid B is moved into 35 DEG C of tepidariums, obtain reaction solution；It is slowly added dropwise 90~
150mL distilled water controls temperature at 90 DEG C or so in reaction solution, keeps 30min~1h.Room temperature is cooled to, is mixed
Liquid C；30% hydrogen peroxide is added to remove excessive oxidant in mixed liquor C, untill mixed liquor C is changed into glassy yellow.Add
150~500mL distilled water dilutings are simultaneously filtered while hot, obtain thick filtrate, and the hydrochloric acid of 0.01mol/L, anhydrous second are used successively
The multiple centrifuge washing of alcohol, deionized water is until sulfate radical-free ion in filtrate（Detected without precipitation with barium chloride）Solution, will obtain
It is thick（PH about 6.5）Graphite oxide solution is diluted to 1mg/mL, using the min of ultrasonic cell disruptor ultrasound 30~60,
The dispersion liquid is centrifuged 20 minutes with speed that rotating speed is 4500 and 8000 revs/min respectively, impurities at bottom is removed, is aoxidized
Degree graphene oxide dispersion higher.
Preferably, the step（1）In, also including the pre-treatment of polyurethane sponge body：：Polyurethane sponge body is successively third
It is ultrasonically treated in ketone, ethanol and deionized water, 1~3h is processed respectively, to remove surface small-molecule substance and grease；60 are placed in again
The drying of DEG C vacuum drying chamber.
The preparation method of the double sponge adsorbed films of above-mentioned redox graphene-polyurethane, it is preferred that the step（2）
In, the temperature of the freeze-drying is -50 DEG C~-10 DEG C, and pressure is 2Pa~30Pa, and the time is 12 h~48h.
The preparation method of the double sponge adsorbed films of above-mentioned redox graphene-polyurethane, it is preferred that the step（3）
In, the temperature of the hot pressing is 180 DEG C~200 DEG C, and the time is 0.5h~3h.
Preferably, the step（3）In, the thickness of the double sponge adsorbed films of the redox graphene-polyurethane is oxygen
The 1/30~1/10 of the double sponge composite thickness of graphite alkene-polyurethane.
Used as a total inventive concept, the present invention also provides a kind of above-mentioned redox graphene-polyurethane double seas
Oxygen reduction fossil prepared by the preparation method of continuous adsorbed film or the double sponge adsorbed films of above-mentioned redox graphene-polyurethane
Double applications of the sponge adsorbed film in pollutant in adsorbed water body of black alkene-polyurethane.
Preferably, the application is including hydrophilic dye, hydrophobicity dyestuff, heavy metal, antibiotic, hydrophobic pesticidal etc.
Remove Adsorption.
Compared with prior art, the advantage of the invention is that：
1st, the double sponge adsorbed films of redox graphene-polyurethane of the invention, by means of large-sized polyurethane hot pressing sponge
Uniformly be filled in the hole of polyurethane hot pressing sponge membrane redox graphene cavernous body and physics therewith as carrier by film
With reference to redox graphene cavernous body is difficult to scatter, and dexterously solves the difficult shaping of graphene sponge, should not prepare big chi
The problems such as utilization being not easily recycled after very little, absorption pollutant.The double sponge adsorbed films of the redox graphene-polyurethane have removal
In water body pollutant efficiency high, absorption property it is good, can large scale prepare and easily reclaim and can Reusability the advantages of.
2nd, the preparation method of the double sponge adsorbed films of redox graphene-polyurethane of the invention, using infiltration-lyophilized-
Hot compression technique, in first passing through the hole that infiltration makes graphene oxide enter into polyurethane sponge, then makes oxidation stone by lyophilized
Black alkene forms graphene oxide cavernous body, and the same of polyurethane sponge bodily form generating polyurethane hot pressing sponge membrane is made finally by hot pressing
When, its intrapore graphene oxide cavernous body is reduced to redox graphene cavernous body, obtain redox graphene-
The double sponge adsorbed films of polyurethane, by after hot pressing, redox graphene sponge is molded in the hole of polyurethane, with polyurethane
Pore wall physical bond, be difficult to scatter, in addition, graphene oxide is during thermal reduction, self assembly is carried out between lamella,
Redox graphene sponge block is formed in the space of polyurethane sponge, the graphene sponge body of this reduction-state has than table
Area is big, adsorptivity is strong and the advantage such as can be not dissolved by stable existence in water body.The preparation method process is simple, while poly-
Urethane sponge is cheap, while also have certain absorption property concurrently, and easily hot pressing film forming, dexterously solve graphene sponge difficult
The problems such as being molded, large scale should not be prepared, utilization is not easily recycled.Double sponges inhale prepared redox graphene-polyurethane
Membrane have the advantages that in removal water body pollutant efficiency high, absorption property it is good, can large scale prepare and Reusability.
Brief description of the drawings
Fig. 1 is the preparation flow figure of the double sponge adsorbed films of the redox graphene-polyurethane of the embodiment of the present invention 1.
Fig. 2 is the photomacrograph of the double sponge adsorbed films of the redox graphene-polyurethane of the embodiment of the present invention 1.
Fig. 3 is the SEM photograph of the double sponge adsorbed films of the redox graphene-polyurethane of the embodiment of the present invention 1, wherein,
（b）Figure is（a）The partial enlarged drawing of figure.
Fig. 4 is the absorption dress of the double sponge adsorbed films of redox graphene-polyurethane for being provided with the embodiment of the present invention 1
Put.
Fig. 5 is double absorption of the sponge adsorbed film to different dyes of redox graphene-polyurethane manufactured in the present embodiment
Performance test test chart.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
Limit the scope of the invention.
Embodiment 1：
A kind of double sponge adsorbed films of redox graphene-polyurethane of the invention, including redox graphene cavernous body and
Polyurethane hot pressing sponge membrane, the redox graphene cavernous body be uniformly filled in the hole of polyurethane hot pressing sponge membrane and with
Polyurethane hot pressing sponge membrane physical bond.
In the present embodiment, the thickness of the double sponge adsorbed films of redox graphene-polyurethane is 1mm.
A kind of preparation method of the double sponge adsorbed films of the redox graphene-polyurethane of the present embodiment, as shown in figure 1,
Realized by following steps：
（1）The preparation of graphene oxide-polyurethane sponge dispersion liquid：
（1.1）Take 5.0g natural flake graphites powder and 2.5g sodium nitrate is slowly added into the concentrated sulfuric acid of the 90ml of precooling, obtain
Mixed liquor A；Mixed liquor A is placed under condition of ice bath and stirs 60min.Weigh 10 additions of total amount 15.0g potassium permanganate point above-mentioned
In mixed liquor A, temperature is not higher than 5 DEG C of quick stirring 2h, obtains mixed liquid B.Continue to stir during mixed liquid B is moved into 35 DEG C of tepidariums
6h, obtains reaction solution.150mL distilled water is slowly added dropwise in gained reaction solution, and controls temperature at 90 DEG C or so, keep 1h.It is cold
But room temperature is arrived, mixed liquor C is obtained；30% hydrogen peroxide is added to remove excessive oxidant in mixed liquor C, until mixed liquor C is changed into
Untill glassy yellow.Add 500mL distilled water dilutings and filter while hot, obtain filtrate, the hydrochloric acid of 0.01mol/L, nothing are used successively
The multiple centrifuge washing of water-ethanol, deionized water is until sulfate radical-free ion in filtrate（Detected without precipitation with barium chloride）Solution, will
What is obtained is thick（PH about 6.5）Graphite oxide solution be diluted to 1mg/mL, use ultrasonic cell disruptor ultrasound 60
Min, gained dispersion liquid is centrifuged 20 minutes with speed that rotating speed is 4500 and 8000 revs/min respectively, removes impurities at bottom, is obtained
To degree of oxidation graphene oxide dispersion higher.
（1.2）Take volume（Length × width × height）For the polyurethane sponge of 2cm × 2cm × 1cm in acetone, ethanol and goes successively
Ultrasonically treated 1h is distinguished in ionized water, 60 DEG C of vacuum drying chamber drying is placed in, for removing surface small-molecule substance and grease.
（1.3）By step（1.1）Obtained graphene oxide ultrasonic disperse is configured to the oxidation that concentration is 5mg/L in water
Graphene dispersing solution, will be through step（1.2）The clean polyurethane sponge body in surface is added in the dispersion liquid of graphene oxide, after
Continuous ultrasound 1h, period extrudes the minute bubbles that cavernous body is removed in hole repeatedly, makes graphene oxide well into polyurethane sponge
In the hole of body, graphene oxide-polyurethane sponge dispersion liquid is obtained.
（2）Freeze-drying
By step（1）The graphene oxide of gained-polyurethane sponge dispersion liquid enters to vacuumize row freeze-drying, during freeze-drying
Between be 24h, temperature be -50 DEG C, pressure be 3 Pa, make graphene oxide formed graphene oxide cavernous body, poly- ammonia will be covered in
The unnecessary graphene oxide cavernous body of ester sponge surface is carefully removed, and the double sponges of graphene oxide-polyurethane for obtaining brown are answered
It is fit.
（3）Hot pressing film forming
By step（2）The double sponge complexs of the graphene oxide-polyurethane of gained carry out hot pressing, specially in 180 DEG C of high temperature
Lower hot press compresses film forming, and hot pressing time is 1h, makes polyurethane sponge bodily form generating polyurethane hot pressing sponge membrane, and make oxidation stone
Black alkene cavernous body is reduced to redox graphene cavernous body, obtains the double seas of redox graphene-polyurethane that thickness is 1mm
Continuous adsorbed film, as shown in Figure 2.
Fig. 3 is the SEM photograph of the double sponge adsorbed films of redox graphene-polyurethane manufactured in the present embodiment, by（a）Figure
Understand, redox graphene cavernous body is uniformly filled in the hole of polyurethane hot pressing sponge membrane；（b）Figure is the double seas of polyurethane
The enlarged drawing of the redox graphene cavernous body in continuous adsorbed film, it can be seen that the reduction prepared by the technique
The assembling of mutual overlap joint forms redox graphene cavernous body between graphene oxide layer has uniform loose structure, aperture
About 10 microns of size.The structure has the advantages that adsorption capacity is big, the rate of adsorption is fast to the pollutant in water body.
The double sponge adsorbed films of redox graphene-polyurethane manufactured in the present embodiment are applied to going for waste water from dyestuff
Remove：
Compound concentration is methylene blue solution, Congo red solution, methyl orange solution and the rhodamine B solution each 20 of 10mg/L respectively
ML is used as target waste water from dyestuff.The double sponge adsorbed films of the redox graphene-polyurethane of the present embodiment are pacified as adsorbed film
Loaded in the adsorbent equipment shown in Fig. 4.Pressurizeed using peristaltic pump, target waste water from dyestuff is slow transitted through into the film, finally
Water body after to membrane filtration.The target dye strength of the water body after membrane filtration is measured using ultraviolet-visible optical tester,
Result is as shown in figure 5, Fig. 5（a）It is the absorption property test curve of methylene blue, Fig. 5（b）For Congo red absorption property is tested
Curve, Fig. 5（c）It is the absorption property test curve of methyl orange, Fig. 5（d）It is the absorption property test curve of rhodamine B, by scheming
Understand, the clearance of above-mentioned four kinds of dyestuffs is respectively 81.18%, 91.23%, 80.42% and 92.78%, illustrates the composite membrane
There is excellent adsorption separation performance to dyestuff.
Film flushing process：Using the organic solvents such as acetone or alcohol to adsorb pollutant redox graphene-poly- ammonia
The double sponge adsorbed films of ester are soaked repeatedly, you can the dyestuff in film, the reduction-oxidation after removal absorption dyestuff are adsorbed in effectively removal
The double sponge adsorbed films of Graphene-polyurethane can continue on for the purification of waste water from dyestuff.The above is only preferred reality of the invention
Mode is applied, protection scope of the present invention is not limited merely to above-described embodiment.All technical schemes belonged under thinking of the present invention are equal
Belong to protection scope of the present invention.It is noted that for those skilled in the art, not departing from the present invention
Improvements and modifications on the premise of principle, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. double sponge adsorbed films of a kind of redox graphene-polyurethane, it is characterised in that including redox graphene sponge
Body and polyurethane hot pressing sponge membrane, the redox graphene cavernous body are uniformly filled in the hole of polyurethane hot pressing sponge membrane
It is interior and with polyurethane hot pressing sponge membrane physical bond.
2. double sponge adsorbed films of redox graphene-polyurethane according to claim 1, it is characterised in that it is described also
The thickness of the double sponge adsorbed films of former graphene oxide-polyurethane is 1mm~5mm.
3. a kind of preparation method of the double sponge adsorbed films of redox graphene-polyurethane, comprises the following steps：
（1）Polyurethane sponge body is added in the dispersion liquid of graphene oxide, graphene oxide is entered under ultrasound condition
To in the hole of polyurethane sponge body, graphene oxide-polyurethane sponge dispersion liquid is obtained；
（2）By step（1）The graphene oxide of gained-polyurethane sponge dispersion liquid carries out freeze-drying, makes graphene oxide
Graphene oxide cavernous body is formed, the double sponge complexs of graphene oxide-polyurethane are obtained；
（3）By step（2）The double sponge complexs of the graphene oxide-polyurethane of gained carry out hot pressing, make the polyurethane sponge bodily form
Generating polyurethane hot pressing sponge membrane, and graphene oxide cavernous body is reduced to redox graphene cavernous body, obtain oxygen reduction
The double sponge adsorbed films of graphite alkene-polyurethane.
4. the preparation method of the double sponge adsorbed films of redox graphene-polyurethane according to claim 3, its feature exists
In the step（1）In, in the dispersion liquid of the graphene oxide, decentralized medium is water, and the concentration of graphene oxide is 2mg/
L~20mg/L.
5. the preparation method of the double sponge adsorbed films of redox graphene-polyurethane according to claim 4, its feature exists
Have a surfactant in the Surface coating of, graphene oxide, surfactant include silane coupler, sodium cetanesulfonate,
One or more in Dodecydimethylammonium bronides.
6. the preparation method of the double sponge adsorbed films of redox graphene-polyurethane according to claim 3, its feature exists
In the step（1）In, the polyurethane sponge body include EU foaming body, PAUR foaming body or
Composite foamed body containing polyurethane.
7. the preparation method of the double sponge adsorbed films of redox graphene-polyurethane according to claim 3, its feature exists
In the step（2）In, the temperature of the freeze-drying is -50 DEG C~-10 DEG C, and pressure is 2Pa~30Pa, and the time is 12 h
~48h.
8. the preparation method of the double sponge adsorbed films of redox graphene-polyurethane according to claim 3, its feature exists
In the step（3）In, the temperature of the hot pressing is 180 DEG C~200 DEG C, and the time is 0.5h~3h.
9. a kind of double sponge adsorbed films of redox graphene-polyurethane as claimed in claim 1 or 2 or such as claim 3
Oxygen reduction fossil prepared by the preparation method of the double sponge adsorbed films of redox graphene-polyurethane described in~8 any one
Double applications of the sponge adsorbed film in pollutant in adsorbed water body of black alkene-polyurethane.
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| CN110407196A (en) * | 2019-08-23 | 2019-11-05 | 哈尔滨工业大学 | A kind of preparation method of the low defect graphene film based on grapheme foam |
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| CN115490335A (en) * | 2022-09-19 | 2022-12-20 | 四川鑫启伟环保科技有限公司 | Graphene-based water body in-situ purification method |
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| CN109621906B (en) * | 2018-12-15 | 2021-09-03 | 同济大学 | Method for preparing composite sponge capable of absorbing viscous crude oil |
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| CN110407196B (en) * | 2019-08-23 | 2022-03-15 | 哈尔滨工业大学 | Preparation method of low-defect graphene film based on graphene foam |
| CN113667291A (en) * | 2021-08-23 | 2021-11-19 | 华南理工大学 | Super-hydrophobic material, preparation method thereof and sensor |
| CN113667291B (en) * | 2021-08-23 | 2022-08-12 | 华南理工大学 | Super-hydrophobic material, preparation method thereof and sensor |
| CN114190947A (en) * | 2021-12-09 | 2022-03-18 | 上海交通大学 | Non-invasive electroencephalogram sensor based on flexible substrate and preparation method thereof |
| CN115490335A (en) * | 2022-09-19 | 2022-12-20 | 四川鑫启伟环保科技有限公司 | Graphene-based water body in-situ purification method |
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