CN108246268A - A kind of graphene oxide adsorbing material of Aminosilylation and preparation method thereof - Google Patents
A kind of graphene oxide adsorbing material of Aminosilylation and preparation method thereof Download PDFInfo
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- CN108246268A CN108246268A CN201810014108.4A CN201810014108A CN108246268A CN 108246268 A CN108246268 A CN 108246268A CN 201810014108 A CN201810014108 A CN 201810014108A CN 108246268 A CN108246268 A CN 108246268A
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- 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
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The present invention discloses graphene oxide adsorbing material of a kind of Aminosilylation and preparation method thereof.On the basis of the method for the present invention in graphite oxide alkenyl by introducing silane reagent, it is further introduced into high-molecular polyvinyl alcohol chain and combines gradient increased temperature vacuum drying technique, obtain intensity enhancing type Aminosilylation graphite oxide alkenyl macroscopic body material.Preparation method provided by the present invention has many advantages, such as that equipment is simple, manufacturing cost is cheap, reaction condition is mild, energy consumption is low and product controllable preparation；Macroscopic body material obtained effectively avoids adsorbent generated secondary pollution problem after use；Simultaneously, pass through the introducing of functional group and macromolecular chain, not only increase absorption property of the material to heavy metal contaminants in water, the mechanical strength of material also greatly improved, improve the recycling performance of material, higher practical value and commercial applications prospect are made it have, can be widely applied to the removal of heavy metal contaminants in water.
Description
Technical field
The present invention relates to a kind of preparation methods of sorbing material, belong to the graphite oxide alkenyl macroscopic view of silylation modification modification
The preparation of body sorbing material and application field, the graphene oxide adsorbing material of specifically a kind of Aminosilylation and its
Preparation method.
Background technology
With the continuous development of industrial or agricultural activity, the water for being discharged into the stain disease of various water bodys is on the increase, and water quality is increasingly
Decline.The pollutants such as a large amount of metal ions usually contained in these stain diseases and organic dyestuff, due to its complicated component, difficulty
In degradation, the deterioration of aquatic ecosystem is caused, the health and living environment to the mankind constitute great threat.Cause
This, has become the improvement of water environment pollution the severe challenge that the whole world currently faces.In the past few decades, it is right
There is various technique in the processing of pollutant in water, and wherein absorption method is due to easy to operate, economical and efficient, adsorption effect
The advantages that good, it is considered to be one of removal water pollutant, especially heavy metal ion and the most efficient method of dyestuff.
In recent years, the nano material of appearance is due to excellent with larger specific surface area and stronger Atomic coordinate ability etc.
Point, has shown big advantage in terms of as sorbent material.Graphite oxide alkenyl as a kind of novel carbon group material,
It is that sp is passed through by single layer of carbon atom2What is be piled into after hydridization is similar to honey comb like two dimensional surface.In graphite oxide alkenyl structures
A large amount of oxygen-containing group is connected in the two dimension extension plane of unit, these oxygen-containing groups mainly include carboxyl (- COOH), hydroxyl
(- OH), carbonyl (C=O) and epoxy group (- O-) etc..The appearance of these oxygen-enriched groups is the functionalization of graphene oxide primary surface
A large amount of active site is provided, while also substantially increases the hydrophilicity of graphite oxide alkenyl, being easy for it can
Disperse in aqueous solution.Since graphite oxide alkenyl has many advantages, such as large specific surface area, rich in functional group, polluted in water
The application aspect of object Adsorption shows powerful potentiality.However, common graphite oxide alkenyl is mainly with nanoscale powder
Existing for the form of last shape, agglomeration easily occurs in practical application process；Meanwhile powdered graphite oxide alkenyl
The shortcomings of after absorption there is separation, generation secondary pollution from solution is not easy, these all greatly limit graphene oxide
Practical application of the base as adsorbent in water treatment field.Therefore, the concept of graphite oxide alkenyl macroscopic body is applied and is given birth to.
It finds by literature search, the research to carbon nanometer macroscopic body sorbing material at present and application are focused primarily upon to simple
The preparation of graphite oxide alkenyl macroscopic body sorbing material and the preparation and application of graphene-based macroscopic body sorbing material.China
Patent publication No. is CN103058179A, publication date is on April 24th, 2013, entitled《Legal system is lyophilized in a kind of utilize
The method of standby spongy graphite oxide alkenyl》Patent, disclose and a kind of prepare individual graphene oxide using freeze drying technology
The method of base macroscopic body sponge.Its principle is by quick-frozen and vacuum pumping, directly by the graphene oxide based sols of liquid
Connecing makes solvent distillation removal, obtains graphite oxide alkenyl macroscopic body sponge.It is characterized in operation letter possessed by this preparation method
It is single, but to the defects of original graphite oxide alkenyl progress vacuum freeze drying processing it is the machine of formed macroscopic body material
Tool intensity is very low, is easy to disintegrate in use or avalanche, greatly reduces the service life of macroscopic body material, limit
It has made it and has recycled performance and practical application efficiency.China Patent Publication No. is CN105126764A, publication date 2015
It is on December 9, entitled《A kind of sewage disposal graphene macroform material》Patent, it is macro to disclose a kind of graphene
The preparation method of body sorbing material is seen, achieves relatively good effect in terms of the removal of oils and dyestuff contaminant in water.
Its principle is to prepare graphene macroform sorbing material using the compound of graphene nanometer sheet and graphene fiber film, this
Preparation method has the shortcomings that more complicated preparation process and higher manufacturing cost.For example, preparing graphene polymerization respectively
Object composite fibre and during preparing graphene macroform material, used voltage are 8-30KV, the reaction in reaction kettle
Temperature is 150 DEG C -250 DEG C, can so cause excessive energy consumption and economically unreasonable.And in graphene nanometer sheet and stone
During the recombination reaction of black alkene tunica fibrosa, need to restore the oxygen-containing group on graphite oxide alkenyl, by graphite oxide alkenyl
Graphene is reduced to realize that it is compound with graphene fiber film, can so reduce the activated adoption position on macroscopic body material
Point reduces the absorption property of material.Meanwhile graphite oxide alkenyl is reduced to by graphene by chemical reduction method, it is required
The higher concentration of graphene oxide based sols, the reaction temperature needed is also higher (being usually 150-400 DEG C), thus can generate
Excessively high cost；And it will appear stacking again and the reunion of graphene sheet layer during reaction, greatly reducing it has
Imitate specific surface area.In addition, the graphene macroform prepared by the patent only has preferably the oils in water and dyestuff contaminant
Removal effect, and for other pollutants, such as heavy metal classes, removal effect is unknown.
Invention content
The present invention proposes a kind of graphene oxide adsorbing material of Aminosilylation and preparation method thereof, overcomes existing skill
For the manufacturing cost of graphene macroform sorbing material height, preparation process complexity, the poor selectivity to pollutant, absorption in art
Capacity is low, the mechanical strength of material is low, recycles the deficiencies of poor performance, provides a kind of strength optimization type Aminosilylation
The controllable method for preparing of graphite oxide alkenyl macroscopic body sorbing material.
To achieve the above object, the graphene oxide adsorbing material of a kind of Aminosilylation of the present invention, by
It is introduced on the basis of silane reagent in graphite oxide alkenyl, is further introduced into high-molecular polyvinyl alcohol chain and combination gradient increased temperature is true
Empty dry technology obtains intensity enhancing type Aminosilylation graphite oxide alkenyl macroscopic body material；The obtained amino silane
The graphite oxide alkenyl macroscopic body material of change be a kind of material with network-like pore structure, specific surface area 800-
2600m2/ g, pore volume 0.33-2.2m3/ g, the pore structure includes micropore of the aperture less than 5nm, aperture is 5-20nm's
Aperture, the mesoporous that aperture is 20-60nm and aperture are more than the macropore of 50nm.
A kind of preparation method of the graphene oxide adsorbing material of Aminosilylation of the present invention realizes step such as
Under：
1) preparation of modified graphene oxide base：Silane reagent is added in graphite oxide alkenyl aqueous solution, water-bath adds
When heat is to 50-60 DEG C, hydrolysis generation silanol group (- Si-OH) can occur for the functional group in silane reagent, anti-by 6-8 hours
Ying Hou, silanol group can be grafted on the hydroxyl (- C-OH) in graphite oxide alkenyl, realize the amino silane to graphite oxide alkenyl
Change modification；
2) it obtains adding in polyvinyl alcohol, the amino silicone in the graphene oxide of Aminosilylation modification into above-mentioned steps
The graphene oxide of alkanisation modification and the mass ratio of polyvinyl alcohol are 1：4-6, to the graphene oxide after modification at 85-95 DEG C
Substrate layer is chemically crosslinked, and reaction 6-8h is stirred with the rotating speed of 80-100rpm；
3) using -50 DEG C freezing after, then it is carried out by the way of gradient increased temperature vacuum freeze drying to get to
The graphite oxide alkenyl macroscopic body material of the Aminosilylation of large volume.
A concentration of 2-5mg/mL of the graphite oxide alkenyl aqueous solution.
The silane reagent is N- methyl -3- aminopropyl trimethoxysilanes, N, N- diethyl -3- aminopropyl trimethoxies
Silane, trimethoxysilane, (N, N- dimethyl -3- aminopropyls) trimethoxy silane, bis- (4- amino-benzene oxygens) two
One kind or group in methyl-monosilane, three (dimethylamino) methyl-monosilanes and N- (trimethoxy silicon substrate propyl) ethylenediamine triacetic acid sodium
It closes.
The mass ratio of the silane reagent and graphite oxide alkenyl is 1：10-5：1.
It is described during vacuum freeze drying, vacuum degree 3.3-13pa.
By crosslinked action of the polyvinyl alcohol (PVA) to graphene oxide substrate layer in the preparation method, in conjunction with ladder
It is drying to spend heating mode, improves the mechanical strength of graphite oxide alkenyl macroscopic body.
The rate of the gradient increased temperature is 1-2 DEG C/h, and the state freezed is in -50 DEG C of solution, in vacuum condition or is deposited
In the case of unsaturated vapor pressure, solvent is caused directly to distil, and solute is then retained；Due to being obtained after freeze-drying process
The product arrived, has heredity in structure, i.e., the solute component left after frozen dried can still keep it in solution state
Spatial distribution, after solvent molecule vacuum sublimation so that occur a large amount of hole between solute, therefore after vacuum freeze-drying
To be loose porous spongy graphene oxide, the even structure of product, property is stablized；With blocky, film-form or powder
The graphene oxide of shape is compared, and spongy graphene has specific surface area, more loose pore structure and the surface texture of bigger, makes
It is more excellent to obtain its adsorption effect；In view of the spongelike structure feature of graphene oxide that the present invention obtains, loose porous characteristic,
And huge specific surface area, good morphological character etc., in adsorption effect, adsorption efficiency etc., will show more excellent
Application effect more；And gradient increased temperature causes spongy graphene to have more firm structure feature.
A kind of application of the graphene oxide adsorbing material of the Aminosilylation, it is characterised in that：For in water
The removal of heavy metal contaminants.
Graphene oxide adsorbing material of a kind of Aminosilylation of the present invention and preparation method thereof, advantage
It is：
1) by the chemical modification to graphite oxide alkenyl, the group that there is chelation to heavy metal ion is introduced,
Adsorptive selectivity and absorption property of the graphene oxide adsorbing material to heavy metal contaminants in water are improved, improves material
Practicability；
2) macroscopic body sorbing material is directly prepared using the graphite oxide alkenyl after modification, effectively prevented in the prior art
Due to graphite oxide alkenyl is restored and caused by activated adoption site reduce the defects of, increase adsorption capacity, enhance
To the removal effect of pollutant；Meanwhile the macroscopic body material of large scale is easier to detach, and efficiently avoids powdered absorption
Agent after use caused secondary pollution the problem of；
3) hydrolyze what generated silanol group occurred with the hydroxyl in graphite oxide alkenyl using functional group in silane reagent
Graft reaction while modifying graphite oxide alkenyl, introduces polyvinyl alcohol in the structure
(PVA) macromolecular chain forms chemical crosslinking effect between graphene oxide substrate layer jointly with silane reagent,
The required active force of macroscopic body material will be formed to be extended for by being physical crosslinking and being chemically crosslinked by the physical crosslinking effect of script
Coefficient active force；The chemical crosslinking effect of introducing not only plays the work of flexible supporter between graphite oxide alkenyl
With reducing the reunion of graphene oxide substrate layer；Importantly, with reference to gradient increased temperature dry technology, further improve
The mechanical strength of macroscopic body material substantially enhances material durability in water and recycles performance；
4) the required reaction condition of the preparation method is mild, low to energy consumption, equipment is simple, manufacturing cost is cheap,
It can be produced in batches, and by regulation and control, can realize the controllable preparation to reaction product, thus with significant economical
Benefit and social benefit.
Description of the drawings
Fig. 1 is the thermogravimetric curve of graphite oxide alkenyl macroscopic body sorbing material prepared by the embodiment of the present invention 1；
Fig. 2 is to adsorb Cu in water using graphite oxide alkenyl macroscopic body material prepared by the method for the present invention2+Curve；
Fig. 3 is that the graphite oxide alkenyl macroscopic body sorbing material that is prepared using the method for the present invention recycles performance.
Specific embodiment
Embodiment 1
Graphene oxide adsorbing material of a kind of Aminosilylation of the present invention and preparation method thereof, step is as follows：
1) preparation of modified graphene oxide base：Graphite oxide is prepared, then pass through machinery using improved Hummers methods
Stirring (stirring 4 hours, rotating speed 100rpm) and ultrasonic (6 hours, 50KHz) prepare graphite oxide alkenyl aqueous solution, concentration
For 2mg/L；According to silane reagent：Graphene oxide base mass ratio is 1：5, N- first is added in into graphite oxide alkenyl aqueous solution
Base -3- aminopropyl trimethoxysilanes；This mixed liquor is gradually heating to 52 DEG C and stands reaction 12 hours, obtains Aminosilylation
The graphite oxide olefinic base material of modification；
2) it obtains adding in polyvinyl alcohol, the amino silicone in the graphene oxide of Aminosilylation modification into above-mentioned steps
The graphene oxide of alkanisation modification and the mass ratio of polyvinyl alcohol are 1：4, to the graphene oxide substrate after modification at 85 DEG C
Layer is chemically crosslinked, and reaction 6h is stirred with the rotating speed of 80rpm；
3) by the graphite oxide olefinic base material of the Aminosilylation being prepared modification in temperature to freeze at -50 DEG C
It is dry, then in the case where vacuum degree is 3.3Pa, the mode of gradient increased temperature is taken, is dried in vacuo with the heating rate of 1 DEG C/h, i.e.,
Obtain the graphite oxide alkenyl macroscopic body material of the Aminosilylation of large volume；The oxidation stone of the Aminosilylation of the large volume
Material of the mertenyl macroscopic body material for network-like pore structure, specific surface area 800-2600m2/ g, pore volume 0.33-
2.2m3/ g, it is 20-60nm's that the pore structure, which includes aperture less than aperture that the micropore of 5nm, aperture are 5-20nm, aperture,
Mesoporous and aperture are more than the macropore of 50nm.
The thermogravimetric curve for the sample that the present embodiment is prepared is shown in Figure 1.
It is highly 40cm that dry silanization graphite oxide alkenyl macroscopic body sorbing material, which is filled in, internal diameter is 10cm's
In adsorption column；The Cu for being 80ppm by advance prepared initial concentration2+Solution by peristaltic pump with the flow velocity of 2.0mL/min from
It is pumped into adsorption column on down, and primary water outlet is collected every 30min, measure wherein Cu2+Concentration；As water inlet Cu2+Concentration
With being discharged Cu2+When concentration is equal, represent that absorption is completed, experiment terminates.
Embodiment 2
1) preparation of modified graphene oxide base：Graphite oxide is prepared, and pass through machinery using improved Hummers methods
Stirring (stirring 6 hours, rotating speed 100rpm) and ultrasonic (8 hours, 40KHz) prepare graphite oxide alkenyl aqueous solution, concentration
For 3.5mg/L；According to silane reagent：Graphene oxide base mass ratio is 1：1, N- first is added in into graphite oxide alkenyl aqueous solution
Base -3- aminopropyl trimethoxysilanes；This mixed liquor is gradually heating to 52 DEG C and stands reaction 12 hours, obtains Aminosilylation
The graphite oxide olefinic base material of modification；
2) it obtains adding in polyvinyl alcohol, the amino silicone in the graphene oxide of Aminosilylation modification into above-mentioned steps
The graphene oxide of alkanisation modification and the mass ratio of polyvinyl alcohol are 1：6, to the graphene oxide substrate after modification at 95 DEG C
Layer is chemically crosslinked, and reaction 8h is stirred with the rotating speed of 100rpm；
3) by the graphite oxide olefinic base material of the Aminosilylation being prepared modification in temperature to freeze at -50 DEG C
It is dry, then in the case where vacuum degree is 5.0Pa, the mode of gradient increased temperature is taken, is dried in vacuo with the heating rate of 1 DEG C/h, i.e.,
It can obtain the graphite oxide alkenyl macroscopic body material of the Aminosilylation of large volume；The oxidation of the Aminosilylation of the large volume
Material of the graphene-based macroscopic body material for network-like pore structure, specific surface area 800-2600m2/ g, pore volume are
0.33-2.2m3/ g, the pore structure include micropore of the aperture less than 5nm, the aperture that aperture is 5-20nm, aperture 20-
The mesoporous of 60nm and aperture are more than the macropore of 50nm.
It is highly 40cm that dry silanization graphite oxide alkenyl macroscopic body sorbing material, which is filled in, internal diameter is 10cm's
In adsorption column；The Pb for being 120ppm by advance prepared initial concentration2+Solution by peristaltic pump with the flow velocity of 2.0mL/min from
It is pumped into adsorption column on down, and primary water outlet is collected every 30min, measure wherein Pb2+Concentration.As water inlet Pb2+Concentration
With being discharged Pb2+When concentration is equal, represent that absorption is completed, experiment terminates；The sample that the present embodiment is prepared is to Pb in water2+It inhales
It is attached that recycle performance shown in Figure 3.
Embodiment 3
1) preparation of modified graphene oxide base：Graphite oxide is prepared, and pass through machinery using improved Hummers methods
Stirring (stirring 4 hours, rotating speed 90rpm) and ultrasonic (10 hours, 60KHz) prepare graphite oxide alkenyl aqueous solution, concentration
For 5mg/L；According to silane reagent：Graphene oxide base mass ratio is 2：1, N- first is added in into graphite oxide alkenyl aqueous solution
Base -3- aminopropyl trimethoxysilanes；This mixed liquor is gradually heating to 52 DEG C and stands reaction 12 hours, obtains Aminosilylation
The graphite oxide olefinic base material of modification；
2) it obtains adding in polyvinyl alcohol, the amino silicone in the graphene oxide of Aminosilylation modification into above-mentioned steps
The graphene oxide of alkanisation modification and the mass ratio of polyvinyl alcohol are 1：5, to the graphene oxide substrate after modification at 90 DEG C
Layer is chemically crosslinked, and reaction 7h is stirred with the rotating speed of 90rpm；
3) by the graphite oxide olefinic base material of the Aminosilylation being prepared modification in temperature to freeze at -50 DEG C
It is dry, then in the case where vacuum degree is 7.5Pa, the mode of gradient increased temperature is taken, is dried in vacuo with the heating rate of 2 DEG C/h, i.e.,
It can obtain the graphite oxide alkenyl macroscopic body material of the Aminosilylation of large volume；The oxidation of the Aminosilylation of the large volume
Material of the graphene-based macroscopic body material for network-like pore structure, specific surface area 800-2600m2/ g, pore volume are
0.33-2.2m3/ g, the pore structure include micropore of the aperture less than 5nm, the aperture that aperture is 5-20nm, aperture 20-
The mesoporous of 60nm and aperture are more than the macropore of 50nm.
The thermogravimetric curve of sample manufactured in the present embodiment is shown in Figure 1.
It is highly 40cm that dry silanization graphite oxide alkenyl macroscopic body sorbing material, which is filled in, internal diameter is 10cm's
In adsorption column.The Cu for being 80ppm by advance prepared initial concentration2+By peristaltic pump with the flow velocity of 4.0mL/min from it is lower and
On be pumped into adsorption column, and primary water outlet is collected every 30min, measure wherein Cu2+Concentration.As water inlet Cu2+Concentration is with going out
Water Cu2+When concentration is equal, represent that absorption is completed, experiment terminates.The sample that the present embodiment is prepared is to Cu in water2+Absorption
Curve is shown in Figure 2.
By Fig. 1-3 it is found that the graphene oxide adsorbing material counterweight of a kind of Aminosilylation that the present invention is prepared
Ni metal2+And Pb2+Adsorbance be respectively 230.73mg/g and 278.17mg/g.And incorporation and gradient increased temperature due to PVA
Vacuum Freezing ＆ Drying Technology so that the macroscopic body material of preparation has higher mechanical strength.And this method preparation process letter
Single, reaction condition is mild, low to energy consumption, has broad prospects in terms of practical application.
Comparative example 1
According to the preparation method of embodiment 1, N- methyl -3- aminopropyl trimethoxies are not added in graphite oxide alkenyl aqueous solution
Base silane and any other silane reagent, the macroscopic body material after synthesis is to the Cu in aqueous solution2+Adsorbance be
80.50mg/g.Illustrate that compared with traditional graphene oxide base adsorbent, the silane reagent of addition can greatly improve material
To the absorption property of heavy metal ion.
Comparative example 2
According to the preparation method of embodiment 2, in 2), polyethylene is not added to the graphene oxide substrate layer after modification
Alcohol and any other macromolecular chain, the macroscopic body material after synthesis occurs as soon as after the recycling for carrying out 2-3 times to be finished
Structure caves in and disintegrates.The polyvinyl alcohol for illustrating to add in can improve the mechanical strength of material and recycle performance.
Claims (8)
1. a kind of graphene oxide adsorbing material of Aminosilylation, it is characterised in that：By drawing in graphite oxide alkenyl
On the basis of entering silane reagent, it is further introduced into high-molecular polyvinyl alcohol chain and combines gradient increased temperature vacuum drying technique, obtain
Intensity enhancing type Aminosilylation graphite oxide alkenyl macroscopic body material；The graphite oxide alkenyl of the obtained Aminosilylation
Macroscopic body material be a kind of material with network-like pore structure, specific surface area 800-2600m2/ g, pore volume are
0.33-2.2m3/ g, the pore structure include micropore of the aperture less than 5nm, the aperture that aperture is 5-20nm, aperture 20-
The mesoporous of 60nm and aperture are more than the macropore of 50nm.
2. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as described in claim 1, realizes step
It is as follows：
1) preparation of modified graphene oxide base：Silane reagent is added in graphite oxide alkenyl aqueous solution, heating water bath is extremely
At 50-60 DEG C, by the reaction of 6-8 hours, the graphene oxide of Aminosilylation modification is obtained；
2) it obtains adding in polyvinyl alcohol, the Aminosilylation in the graphene oxide of Aminosilylation modification into above-mentioned steps
The graphene oxide of modification and the mass ratio of polyvinyl alcohol are 1：4-6 is stirred at 85-95 DEG C with the rotating speed of 80-100rpm
Mix reaction 6-8h；
3) after using -50 DEG C of freezings, vacuum freeze drying then is carried out to get to substantially to it by the way of gradient increased temperature
The graphite oxide alkenyl macroscopic body material of long-pending Aminosilylation.
3. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as claimed in claim 2, feature exist
In：A concentration of 2-5mg/mL of the graphite oxide alkenyl aqueous solution.
4. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as claimed in claim 2, feature exist
In：The silane reagent is N- methyl -3- aminopropyl trimethoxysilanes, N, N- diethyl -3- aminopropyl trimethoxysilanes,
Trimethoxysilane, (N, N- dimethyl -3- aminopropyls) trimethoxy silane, bis- (4- amino-benzene oxygens) dimethyl-silicons
Alkane, three (dimethylamino) methyl-monosilanes and one kind in N- (trimethoxy silicon substrate propyl) ethylenediamine triacetic acid sodium or combination.
5. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as claimed in claim 4, feature exist
In：The mass ratio of the silane reagent and graphite oxide alkenyl is 1：10-5：1.
6. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as claimed in claim 2, feature exist
In：It is described during vacuum freeze drying, vacuum degree 3.3-13pa.
7. a kind of preparation method of the graphene oxide adsorbing material of Aminosilylation as claimed in claim 2, feature exist
In：The rate of the gradient increased temperature is 1-2 DEG C/h.
8. the application of the graphene oxide adsorbing material of a kind of Aminosilylation as described in claim any one of 1-7, special
Sign is：For the removal to heavy metal contaminants in water.
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| CN110420622A (en) * | 2019-08-01 | 2019-11-08 | 合肥学院 | The preparation method of the graphene oxide hybridized film of copper ion in a kind of removing water |
| CN111346610A (en) * | 2020-03-03 | 2020-06-30 | 邢台学院 | Graphite oxide/ferrite composite material and preparation method and application thereof |
| CN114177897A (en) * | 2021-07-30 | 2022-03-15 | 华东理工大学 | Preparation method and application of silane modified cyclodextrin-based adsorbent |
| CN117903546A (en) * | 2023-12-28 | 2024-04-19 | 无锡市中导高新材料有限公司 | Teflon material for conveying belt and preparation process thereof |
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