CN106512956B - A kind of magnetic graphene collagen composite adsorbent material and preparation method thereof - Google Patents
A kind of magnetic graphene collagen composite adsorbent material and preparation method thereof Download PDFInfo
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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
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- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
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- 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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- 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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- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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Abstract
A kind of preparation and its application of magnetic graphene collagen composite adsorbent material, the material are absorption function of tonic chord constituent element, nanometer Fe with graphene3O4Particle is magnetic function constituent element, carrier of the collagen as absorption constituent element and magnetic constituent element.The solidification of collagen matrices material surface carried magnetic nano particle and grapheme material is realized using cross-linking reaction.The composite material has good adsorption capacity, the compound defect that can solve graphene and be easy to happen reunion when removing water pollutant of graphene and collagen, and the addition of magnetic nano-particle that composite material can be made to be easier to separate and recover anionic dye.
Description
Technical field
The present invention relates to the adsorption functional material field of water process, specially a kind of magnetic graphene collagen composite adsorption material
Material and preparation method thereof.
Background technique
Graphene is a kind of carbon nanomaterial, is the bi-dimensional cellular shape lattice structure that single layer of carbon atom is formed through SP2 hydridization,
With extra specific surface area, (theoretical specific surface area is 2630 m2/ g), excellent mechanical performance the features such as, be a kind of great potential
Adsorbent material.Graphene-based material mainly passes through the absorption such as hydrogen bond action, π-π effect, electrostatic interaction, complexing pollution
Object has preferable adsorption effect to heavy metal ion and organic pollutant.But there are still limitations for its application in absorption:
Graphene is easily reunited, and is caused its specific surface area to decline, as powdered nano material, is not easy to be separated by solid-liquid separation after absorption.
Collagenous fibres are a kind of appearance white, transparent natural fiber, are linear chain structure albumen, containing big in collagenous fibres molecule
Carboxyl, amino, hydroxyl isoreactivity group are measured, there is very high chemical activity, it can be with hydrone with Hydrogenbond, hydrophilic ability
By force.
It is easy to reunite lacking of being difficult to separate if graphene is solidificated in and can solve powdered graphite alkene material on collagen-based materials
Point, while the mechanical strength of collagenous biological material can also be reinforced, magnetic Nano Fe3O4The addition of particle can overcome solid-liquid
Isolated problem saves the process links when consumption energy consumptions such as centrifugal filtration, therefore becomes this field and thirst for the technology solved always
Problem.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of magnetic graphene collagen composite adsorption materials of green high-efficient
Material, the material have good adsorption capacity to anionic dye, and the magnetic effect of material can guarantee to adsorb water-soluble with processing
Liquid efficiently separates, and the defect that graphene nano material can be overcome easy to reunite.
Another object of the present invention is to provide a kind of preparation methods of magnetic graphene collagen composite adsorbent material.
Technical scheme is as follows:
The material is a multicomponent organic composite material system, comprising: the graphene constituent element for undertaking adsorption function provides magnetic
The Fe of property3O4Nanoparticle constituent element, for carried magnetic nano particle and the collagen monomer constituent element of crosslinking curing graphene;Magnetic
The mass ratio range of property nanoparticle and collagen is 1:1-4:1, and the mass ratio range of graphene and collagen is 1:1-3:
1。
The preparation method of adsorbent material of the present invention includes the following steps:
Step 1, by magnetic Fe3O4Nanoparticle is evenly dispersed in water, while appropriate polyethyleneimine is added and is dispersed with stirring
The magnetic nano-particle dispersion A of 1-2h formation functionalization;
It is step 2, graphene oxide composite material is evenly dispersed in water, while thiosemicarbazides is added is dispersed with stirring 1-2h and being formed
The graphene oxide dispersion B of functionalization;
Appropriate collagenous fibres are dissolved in certain density acetum and form collagen solution by step 3, to collagen solution
Middle addition magnetic nano-particle dispersion A and graphene oxide dispersion B stirs 2-4h, is slowly added under stirring
Continue to stir 4-6h after glutaraldehyde, obtained compounding substances are centrifugated after being washed repeatedly with distilled water, obtained black solid
For 24 hours with refrigerator freeze-drying, Fe is finally obtained3O4/ collagen/graphene oxide composite material.
In the step 1, magnetic Fe3O4Nanoparticle utilizes precipitating using the mixture of frerrous chloride and ferric trichloride
Method preparation, precipitated product ultrasonic disperse in water, be added 10-30%(V/V) polyethyleneimine carry out functional amido.
In the step 2, graphene is to be with graphite powder using the graphene oxide of improved Hummers method preparation
Raw material is prepared with the concentrated sulfuric acid and potassium permanganate oxidation ice-water bath, freeze-drying;Graphene oxide ultrasonic disperse in water, is added
Thiosemicarbazides 2%-5%(m/V) carries out functionalization.
In the step 3, the concentration of acetum is 0.1-0.5mol/L.
In the step 3, the concentration of collagen solution is (10-15g/L), the volume ratio of collagen solution and dispersion B
Volume ratio for 4:1, dispersion A and dispersion B is 1:1-1.3:1.
In the step 3, glutaraldehyde and reaction mixture volume ratio are 1:30-1:15.
The advantages and features of the present invention:
It proposes the method for graphene nano material and collagenous polymer Material cladding preparation treatment function material, magnetism
Fe3O4Nanoparticle and graphene oxide will carry out functionalization respectively, and to disperse solution form addition, prevent from reuniting.Both may be used
To solve the problems, such as that graphene powder is easy to reunite, and the mechanical performance of collagen-based materials, magnetic Fe can be reinforced3O4Nanoparticle
Can use external magnetic field is easily isolated adsorbent in operation.
Detailed description of the invention
Fig. 1 is the electron-microscope scanning figure of graphene oxide.
Fig. 2 (a) is Fe3O4/ collagen/graphene oxide composite material photo, Fig. 2 (b) are Fe3O4/ collagen/oxidation stone
The photo that black alkene composite material is attracted by magnetic stir bar illustrates that the material has magnetism.
Fe in the position Fig. 3 embodiment 13O4/ collagen/graphene oxide composite material is initial to 50ml under condition of different pH
The adsorption effect of concentration 400mg/L reactive brilliant red x-3b.
Fig. 4 is the Fe in embodiment 13O4/ collagen/graphene oxide composite material is right under the conditions of different times of contact
The adsorption effect of 50ml initial concentration 100mg/L reactive brilliant red x-3b.
Specific embodiment
Embodiment 1
Functional magnetic Fe3O4Particle: 0.5g frerrous chloride and 1.35g ferric trichloride are dissolved in 25ml water, are heated to
It is slowly added dropwise after 14ml ammonium hydroxide is stirred to react 30min and is washed with water under 80 DEG C of quick stirrings, centrifugation obtains black precipitate.By 1.5g
The black precipitate substance ultrasonic disperse stirs 1h after 3ml polyethyleneimine is added in 10ml water.
Functional graphene oxide: 5g graphite powder is accurately weighed with electronic balance, 2.5g sodium nitrate is added to the circle of 500ml
In the flask of bottom, it is uniformly mixed;It is then poured into round-bottomed flask with the concentrated sulfuric acid that graduated cylinder measures 100ml, rotor is added, ice is being housed
Ice-water bath is carried out in the heat collecting type constant-temperature heating magnetic stirring apparatus of block and stirs 30min;Then 15g potassium permanganate is weighed, slowly
It is added in round-bottomed flask and (is added in 1h), remove ice-water bath, be stirred overnight;150ml deionized water is added dropwise to reaction
In solution, control adds in 0.5h-1h, continuously adds 50ml hydrogen peroxide (30%), and stir 1h, stops reaction;After reacting
Solution pour into centrifuge tube, be centrifuged 15min under the conditions of 3500r/min, outwell supernatant, beneath precipitating with 5% hydrochloric acid
Solution washing, is centrifuged 5min under the conditions of 3500r/min, outwells supernatant, remaining solid is repeatedly washed with deionized water
Wash centrifugation (outwelling supernatant after centrifugation every time, remaining solid continues to be washed with water, and washs 4-5 times repeatedly);It finally obtains
Solid be placed in refrigerator-freezer and freeze 12h, the solid to freeze later vacuum drying in freeze drier for 24 hours, obtains after dry
Solid be exactly graphene oxide.By 0.5g graphene oxide powder ultrasonic disperse in 10ml water, 0.2g thiosemicarbazides is added
And stir 30min.
Collagen solution: it weighs stirring in the acetum for the 0.1mol/L that 0.5g collagen is added to 40ml and extremely dissolves.
By Fe3O4Solution and graphene oxide solution are added in collagen solution after stirring 2h, after 2ml glutaraldehyde is slowly added dropwise
Continue to stir 4h, obtained mixed solution is centrifuged after being washed with water, and outwells supernatant, cold after remaining black solid frost 12h
Be lyophilized it is dry for 24 hours, finally obtain Fe3O4/ collagen/graphene oxide composite material.
Take 0.05gFe3O4It is 100mg/L's that/collagen/graphene oxide composite material, which is added separately to 50ml initial concentration,
K2BP is red, shaken 24 hours in the blue dye solution of K3R after be separated by filtration, take supernatant remaining using spectrophotometry measurement solution
Dye strength, calculate removal rate be 100%.
Embodiment 2
Functional magnetic Fe3O4The preparation method such as embodiment 1 of particle, functional graphene oxide.0.5g collagen is weighed to add
Enter into the acetum of the 0.2mol/L of 40ml stirring to dissolving, by functionalization Fe3O4Solution and functional graphene oxide are molten
Liquid is added in collagen solution after stirring 2h, continues to stir 4h after 2ml glutaraldehyde is slowly added dropwise, obtained mixed solution is washed with water
It is centrifuged after washing, outwells supernatant, be freeze-dried for 24 hours after remaining black solid frost 12h, finally obtain Fe3O4/ collagen/oxidation
Graphene composite material.
Take 0.05gFe3O4The active yellow that 50ml initial concentration is 100mg/L is added in/collagen/graphene oxide composite material
It is separated by filtration after being shaken 24 hours in dye solution, supernatant is taken to measure the dye strength of solution remnants using spectrophotometry,
Calculating removal rate is 100%.
Embodiment 3
Functional graphene oxide, the preparation method of collagen solution such as embodiment 1, functional magnetic Fe3O4The preparation of particle
In method by 1.0 black precipitate substance ultrasonic disperses in 10ml water, 1h is stirred after 2ml polyethyleneimine is added.By functionalization
Fe3O4Solution and functional graphene oxide solution are added in collagen solution after stirring 2h, and the continuation of 4ml glutaraldehyde is slowly added dropwise
4h is stirred, obtained mixed solution is centrifuged after being washed with water, and is outwelled supernatant, is freezed after remaining black solid frost 12h dry
It is dry for 24 hours, finally obtain Fe3O4/ collagen/graphene oxide composite material.
Take 0.05gFe3O4It is blue that/collagen/graphene oxide composite material is added to the KNR that 50ml initial concentration is 100mg/L
It is separated by filtration after being shaken 24 hours in dye solution, supernatant is taken to measure the dye strength of solution remnants using spectrophotometry,
Calculating removal rate is 100%.
Embodiment 4
The preparation method of collagen solution such as embodiment 1, functional magnetic Fe3O41.0 black are sunk in the preparation method of particle
Starch matter ultrasonic disperse stirs 1h after 2ml polyethyleneimine is added in 10ml water.The preparation method of functional graphene oxide
It is middle by 0.8g graphene oxide powder ultrasonic disperse in 10ml water, be added 0.4g thiosemicarbazides simultaneously stir 1h.By functionalization
Fe3O4Solution and functional graphene oxide solution are added in collagen solution after stirring 3h, and it is subsequent that 4ml glutaraldehyde is slowly added dropwise
Continuous stirring 5h, obtained mixed solution are centrifuged after being washed with water, and outwell supernatant, and remaining black solid frost 12h freezing is dry
It is dry for 24 hours, finally obtain Fe3O4/ collagen/graphene oxide composite material.
Take 0.05gFe3O4It is yellow that/collagen/graphene oxide composite material is added to the K6G that 50ml initial concentration is 100mg/L
It is separated by filtration after being shaken 24 hours in dye solution, supernatant is taken to measure the dye strength of solution remnants using spectrophotometry,
Calculating removal rate is 100%.
Embodiment 5
Take a series of Fe in 0.05g embodiments 13O4At the beginning of/collagen/graphene oxide composite material is added separately to 50ml
Beginning concentration is in the Active Red Dye solution of 400mg/L, the initial pH value of dye solution using 0.1mol/L hydrochloric acid and
The sodium hydroxide solution of 0.1mol/L is distributed in initial pH value within the scope of 2.0-12.0, and centrifugal filtration takes supernatant after concussion for 24 hours
Liquid calculates its removal rate, as shown in Figure 3 using the dye strength of spectrophotometry measurement solution remnants.
Embodiment 6
Take a series of Fe in 0.05g embodiments 13O4/ collagen/graphene oxide composite material is added to 50ml is initially dense
Degree is in the Active Red Dye solution of 100mg/L, and centrifugal filtration takes supernatant using spectrophotometry after shaking different time
The dye strength for measuring solution remnants, calculates its removal rate, as shown in Figure 4.
Claims (1)
1. a kind of preparation method of magnetic graphene collagen composite adsorbent material,
The material is a multicomponent organic composite material system, comprising: the graphene oxide constituent element for undertaking adsorption function provides magnetic
The Fe of property3O4Nanoparticle constituent element, for carried magnetic nano particle and the collagen constituent element of crosslinking curing graphene oxide;Magnetic
The mass ratio range of property nanoparticle and collagen is 1:1-4:1, and the mass ratio range of graphene oxide and collagen is 1:
1—3:1;
It is characterized by comprising following steps:
Step 1, by magnetic Fe3O4Nanoparticle is evenly dispersed in water, while appropriate polyethyleneimine is added and is dispersed with stirring 1-2h
Form the magnetic nano-particle dispersion A of functionalization;
It is step 2, graphene oxide composite material is evenly dispersed in water, while thiosemicarbazides is added is dispersed with stirring 1-2h and forming function
The graphene oxide dispersion B of change;
Appropriate collagenous fibres are dissolved in certain density acetum and form collagen solution by step 3, into collagen solution plus
Enter magnetic nano-particle dispersion A and graphene oxide dispersion B stirring 2-4h, is slowly added to penta 2 under stirring
Continue to stir 4-6h after aldehyde, obtained compounding substances are centrifugated after being washed repeatedly with distilled water, and obtained black solid is with cold
Jelly machine is freeze-dried for 24 hours, finally obtains Fe3O4/ collagen/graphene oxide composite material;
In the step 1, magnetic Fe3O4Nanoparticle utilizes precipitating legal system using the mixture of frerrous chloride and ferric trichloride
Standby, in water, the polyethyleneimine that volume ratio 10-30% is added carries out functional amido to precipitated product ultrasonic disperse;
In the step 2, graphene oxide is to be with graphite powder using the graphene oxide of improved Hummers method preparation
Raw material is prepared with the concentrated sulfuric acid and potassium permanganate oxidation ice-water bath, freeze-drying;Graphene oxide ultrasonic disperse in water, is added
The thiosemicarbazides of mass volume ratio 2%-5% carries out functionalization;
In the step 3, the concentration of acetum is 0.1-0.5mol/L;
In the step 3, the concentration of collagen solution is 10-15g/L, and the volume ratio of collagen solution and dispersion B are 4:1,
The volume ratio of dispersion A and dispersion B is 1:1-1.3:1;
In the step 3, glutaraldehyde and reaction mixture volume ratio are 1:30-1:15.
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CN108854970B (en) * | 2018-06-28 | 2021-05-18 | 西南科技大学 | Preparation method of collagen peptide grafted hydrothermal carbon microsphere adsorbent |
CN110368901A (en) * | 2019-08-21 | 2019-10-25 | 哈尔滨工业大学 | A kind of preparation method and application of the magnetic oxygenated graphene of amino functional |
CN111229167A (en) * | 2020-01-20 | 2020-06-05 | 华南理工大学 | Thiosemicarbazide modified magnetic graphene oxide adsorbent and preparation method and application thereof |
CN111514867A (en) * | 2020-06-03 | 2020-08-11 | 李娟� | Polyethyleneimine grafted nano Fe3O4-graphene adsorption material and preparation method thereof |
CN112972767B (en) * | 2021-02-05 | 2022-03-11 | 浙江大学 | Magnetic response tissue engineering material with osteogenesis promoting effect and preparation method and application thereof |
CN115646470B (en) * | 2022-12-27 | 2023-04-07 | 杭州德海艾科能源科技有限公司 | Magnetic composite material for treating vanadium-containing wastewater and preparation method and application thereof |
CN117550845B (en) * | 2024-01-11 | 2024-04-12 | 太原理工大学 | Preparation method of high dielectric constant water-soluble rGO cement-based composite material |
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