CN108262012A - A kind of preparation method of graphene aerogel air purifying filter mesh - Google Patents
A kind of preparation method of graphene aerogel air purifying filter mesh Download PDFInfo
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- CN108262012A CN108262012A CN201810068814.7A CN201810068814A CN108262012A CN 108262012 A CN108262012 A CN 108262012A CN 201810068814 A CN201810068814 A CN 201810068814A CN 108262012 A CN108262012 A CN 108262012A
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- graphene
- purifying filter
- filter mesh
- air purifying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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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
- B01J20/28047—Gels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Abstract
The present invention provides a kind of preparation methods of graphene aerogel air purifying filter mesh, dilute graphene oxide solution with solvent；Reducing agent is added in into obtained graphene oxide solution, according to graphene oxide and the mass ratio 10 of reducing agent:1~1:Then 100 additions are stirred 10 ~ 600min or 10 ~ 600min of ultrasound and are uniformly mixed to mixture；The mixed liquor of gained is quantitatively adding in mold, then mold is put into water-bath and is warming up to 50 ~ 100 DEG C, and keeps the temperature 1 ~ 6h, obtains graphene hydrogel；Gained graphene hydrogel is removed into graphene hydrogel contained humidity by the method for freeze-drying, obtains porous graphene aerogel air purifying filter mesh.Since graphene has larger specific surface area and stronger adsorption capacity, the present invention can efficiently adsorb the polluter in air so as to achieve the purpose that purify air.
Description
Technical field
The invention belongs to field of environment protection, are related to a kind of air cleaning unit, and specifically a kind of graphene aerogel is empty
Gas purifies the preparation method of strainer.
Technical background
In recent years, with the rapid development of economy, industrial discharge, the atmosphere polluting problems such as vehicle exhaust, haze are increasingly tight
Weight, people increasingly pay attention to health, and the demand to air purification is increasingly come urgent.Air purifier be refer to absorption,
Various air pollutants are decomposed or converted, effectively improve the product of air cleanliness.Air purifier product currently on the market
Purifying filter element used there are detergent power it is bad the problem of, therefore develop it is a kind of can stop air pollutants get in and
The strong air purifier of detergent power has great importance.
The features such as two-dimentional monoatomic layer structure of graphene, high-specific surface area, good chemical stability and mechanical performance, makes
It becomes a kind of ideal sorbing material, absorption heavy metal ion, dye particles, organic matter and polluted gas etc., extensive use
In the fields such as water process and air purification.There is researcher to be prepared for graphene-supported C/Co nucleocapsids with Nano carbon balls shell structure i.e.
Co/C-GNS and CNS-GNS structures are formed, experiment shows that the structure increases contact surface area, enhances porosity, can inhale
With poisonous gas or flue gas.There is researcher using polyethyleneimine in-situ reducing graphene oxide, it is freeze-dried to be prepared for amine
Base modified graphene aeroge, since the graphene aerogel large specific surface area, high porosity, chemisorbed site are more,
It is splendid to adsorb HCHO gas effectiveness.But also there are preparation method is more complicated, environment for air purification for current graphene aerogel
It pollutes larger, of high cost and the problems such as be difficult to produce in enormous quantities.
Invention content
For the problems of the prior art, the present invention provides a kind of preparation sides of graphene aerogel air purifying filter mesh
Method, the preparation method of this graphene aerogel air purifying filter mesh will solve air purifier product institute in the prior art
Purifying filter element there is technical issues that detergent power.
The present invention provides a kind of preparation methods of graphene aerogel air purifying filter mesh, include the following steps：
1) graphene oxide solution, a concentration of 0.01mg/ml-100mg/ml of gained graphene oxide solution are diluted with solvent
；
2) to step 1）Reducing agent is added in obtained graphene oxide solution, according to the quality of graphene oxide and reducing agent
Than 10:1~1:Then 100 additions are stirred 10 ~ 600min or 10 ~ 600min of ultrasound and are uniformly mixed to mixture；
3) by step 2）The mixed liquor of gained is quantitatively adding in mold, and then mold is put into water-bath and is warming up to 50 ~ 100
DEG C, and 1 ~ 6h is kept the temperature, obtain graphene hydrogel；
4) by step 3）Gained graphene hydrogel removes graphene hydrogel contained humidity by the method for freeze-drying, obtains
Obtain porous graphene aerogel air purifying filter mesh.
Further, the reducing agent is ascorbic acid.
Further, the mold is Teflon mould.
Further, the solvent is water, methanol, ethyl alcohol, ethylene glycol, propyl alcohol, acetone, tetrahydrofuran, isopropanol, two
It is any in methyl sulfoxide, N, N- dimethylformamides or N- methyl pyrrolidones.
Further, the mold is resistance to 100 DEG C and the material mold that is not reacted with the graphene oxide liquid mixture.
The present invention dilutes graphene oxide with solvent and obtains certain density graphene oxide dispersion, then will aoxidize stone
Black alkene dispersion liquid is mixed with reducing agent according to different quality ratio；（Mixed liquor is taken in mold of different shapes, then water-bath
Molding graphene hydrogel is freeze-dried to obtain porous graphene aerogel by heating, and the sky graphene hydrogel is empty
Gas purification strainer can prevent particulate in air and nuisance from getting in.
The present invention is compared with prior art, and technological progress is significant.The present invention has larger ratio due to graphene
Surface area and stronger adsorption capacity, therefore the polluter in air can be efficiently adsorbed so as to reach purification air
Purpose, and preparation method is simple, safe preparation process, it is at low cost, easily accomplish scale production.
Description of the drawings
Fig. 1 is the schematic diagram of graphene aerogel air purifying filter mesh, wherein 1 be square dies make schematic diagram, 2 be
Schematic diagram that circular die is made, 3 signals made for hexagon mold.
Fig. 2 is the scanning electron microscopic picture of graphene aerogel air purifying filter mesh reality sample prepared using the method for the present invention.
Specific embodiment
The method of the present invention is illustrated, but it is not intended that the scope of the present invention below by specific embodiment
Limitation, any modifications, equivalent replacements and improvementsmade within the spirit and principles of the invention, etc. should be included in this
Within the protection domain of invention.
Experimental method described in following example is conventional method unless otherwise specified；The reagent and material, such as
Without specified otherwise, can be obtained by commercial sources.
A kind of preparation method of 1 graphene aerogel air purifying filter mesh of embodiment
The preparation of graphene oxide：Using improved Hummers methods.
The preparation of graphene aerogel strainer：
1）With the prepared graphene oxide solution of deionized water dilution, a concentration of 2mg/ml of gained graphene oxide solution.
2）Ascorbic acid is added in into the graphene oxide solution of gained, according to graphene oxide and ascorbic acid 1:8
Mass ratio adds in；Magnetic agitation 30min is uniformly mixed liquid, mixed liquor is added in rectangular Teflon mould, will
Mold, which is placed in water-bath under the conditions of 99 DEG C, keeps the temperature 3h, and freeze-drying obtains the filter of square graphite alkene aeroge air purification for 1 day
Net, schematic diagram is as shown in Figure 1a.
A kind of preparation method of 2 graphene aerogel air purifying filter mesh of embodiment
The preparation of graphene oxide：Preparation method is same as above.
The preparation of graphene aerogel strainer：
1）With the prepared graphene oxide solution of deionized water dilution, wherein a concentration of 6mg/ml of graphene oxide dispersion.
2）Poly-dopamine is added in into the graphene oxide solution of gained, according to graphene oxide and poly-dopamine 1:4
Mass ratio adds in；Magnetic agitation 30min is uniformly mixed liquid, and mixed liquor is added in circular Teflon mould, will
Mold, which is placed in water-bath under the conditions of 90 DEG C, keeps the temperature 4h, and freeze-drying obtains circular graphitic alkene aeroge air purifying filter mesh in dry 2 days,
Its schematic diagram is as shown in Figure 1 b.
A kind of preparation method of 3 graphene aerogel air purifying filter mesh of embodiment
The preparation of graphene oxide：Preparation method is same as above.
The preparation of graphene aerogel strainer：
1）With the prepared graphene oxide solution of deionized water dilution, wherein a concentration of 6mg/ml of graphene oxide dispersion.
2）Ascorbic acid is added in into the graphene oxide solution of gained, according to graphene oxide and ascorbic acid 1:6
Mass ratio adds in；Magnetic agitation 30min is uniformly mixed liquid, mixed liquor is added in the Teflon mould of hexagon,
Mold is placed in water-bath and keeps the temperature 3h under the conditions of 75 DEG C, gained graphene aerogel is freeze-dried 2 days and obtains hexagon
Graphene aerogel air purifying filter mesh, schematic diagram is as illustrated in figure 1 c.
Graphene aerogel air purifying filter mesh made from this example amplifies 1000 times as schemed under scanning electron microscope（2）Institute
Show, it can be seen that inside the graphene aerogel air purifying filter mesh there is porous structure, while remain with the pleat of graphene
Corrugation form, thus adsorption capacity is high.The high absorption capacity that the pernicious gases such as PARA FORMALDEHYDE PRILLS(91,95) have, but also can adsorb dust from
And achieve the purpose that purify air.
The different shape graphene aerogel air purifying filter mesh that the present embodiment obtains can be used for the air of different demands net
Change in device.The flexibility of graphene aerogel air purifying filter mesh can be adjusted by the proportioning of reducing agent and graphene oxide
Section, therefore can be by actual demand customized production.And the preparation method of the present invention is simple, safe preparation process, at low cost, easy
It accomplishes scale production.
Claims (5)
1. a kind of preparation method of graphene aerogel air purifying filter mesh, it is characterised in that include the following steps：
1）Graphene oxide solution, a concentration of 0.01mg/ml-100mg/ml of gained graphene oxide solution are diluted with solvent；
2）To step 1）Reducing agent is added in obtained graphene oxide solution, according to graphene oxide and the mass ratio of reducing agent
10:1~1:Then 100 additions are stirred 10 ~ 600min or 10 ~ 600min of ultrasound and are uniformly mixed to mixture；
3）By step 2）The mixed liquor of gained is quantitatively adding in mold, and then mold is put into water-bath and is warming up to 50 ~ 100
DEG C, and 1 ~ 6h is kept the temperature, obtain graphene hydrogel；
4）By step 3）Gained graphene hydrogel removes graphene hydrogel contained humidity by the method for freeze-drying, obtains
Porous graphene aerogel air purifying filter mesh.
2. a kind of preparation method of graphene aerogel air purifying filter mesh according to claim 1, it is characterised in that：Institute
The reducing agent stated is ascorbic acid.
3. a kind of preparation method of graphene aerogel air purifying filter mesh according to claim 1, it is characterised in that：Institute
The mold stated is Teflon mould.
4. a kind of preparation method of graphene aerogel air purifying filter mesh according to claim 1, it is characterised in that：Institute
The solvent stated is water, methanol, ethyl alcohol, ethylene glycol, propyl alcohol, acetone, tetrahydrofuran, isopropanol, dimethyl sulfoxide (DMSO), N, N- diformazans
It is any in base formamide or N- methyl pyrrolidones.
5. a kind of preparation method of graphene aerogel air purifying filter mesh according to claim 1, it is characterised in that：Institute
The mold stated is resistance to 100 DEG C and the material mold not reacted with the graphene oxide liquid mixture.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786751A (en) * | 2018-07-12 | 2018-11-13 | 山东佳星环保科技有限公司 | Graphene high-efficiency filtering material for air purifying and preparation method |
| CN109292754A (en) * | 2018-08-07 | 2019-02-01 | 济南大学 | A kind of preparation method of polyethyleneimine-modified graphene aerogel |
| CN110142022A (en) * | 2019-04-17 | 2019-08-20 | 南京工业大学 | A kind of preparation method of air cleaning graphene aerogel |
| CN111229136A (en) * | 2018-11-29 | 2020-06-05 | 昆山科技大学 | Method for detecting gas by using carbon aerogel adsorption material |
| CN112516478A (en) * | 2020-09-02 | 2021-03-19 | 安徽大学 | Intelligent mask and intelligent control method thereof |
| EP3842137A4 (en) * | 2018-08-23 | 2022-05-18 | Shinshu University | Grapheme oxide adsorbent and method for producing same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| EP3842137A4 (en) * | 2018-08-23 | 2022-05-18 | Shinshu University | Grapheme oxide adsorbent and method for producing same |
| CN111229136A (en) * | 2018-11-29 | 2020-06-05 | 昆山科技大学 | Method for detecting gas by using carbon aerogel adsorption material |
| CN111229136B (en) * | 2018-11-29 | 2022-02-08 | 昆山科技大学 | Method for detecting gas by using carbon aerogel adsorption material |
| CN110142022A (en) * | 2019-04-17 | 2019-08-20 | 南京工业大学 | A kind of preparation method of air cleaning graphene aerogel |
| CN112516478A (en) * | 2020-09-02 | 2021-03-19 | 安徽大学 | Intelligent mask and intelligent control method thereof |
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Application publication date: 20180710 |