CN106268705B - A kind of multifunctional air purifying film and preparation method thereof - Google Patents

A kind of multifunctional air purifying film and preparation method thereof Download PDF

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CN106268705B
CN106268705B CN201610628443.4A CN201610628443A CN106268705B CN 106268705 B CN106268705 B CN 106268705B CN 201610628443 A CN201610628443 A CN 201610628443A CN 106268705 B CN106268705 B CN 106268705B
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graphene oxide
film
conjugated polymer
nano graphene
solution
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CN106268705A (en
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展永
邢成芬
齐俊杰
牛瑞民
安海龙
袁宏博
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Hebei kaierwei Biotechnology Co.,Ltd.
Hebei University of Technology
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    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid 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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Abstract

The present invention is a kind of multifunctional air purifying film and preparation method thereof.The multifunctional air purifying film is one of following two:The first air purification film, including basement membrane, and it is sprayed on epilamellar Multifunctional layered;The Multifunctional layered is the mixture of nano graphene oxide and fluorescent conjugated polymer, and the basement membrane is non-woven fabrics;Alternatively, second of air purification film, spray fusing obtains after being mixed for high-molecular organic material, nano graphene oxide and fluorescent conjugated polymer, the use of the purification membrane aperture is 0.2~12 μm, and thickness is 500~5000 μm.The antimicrobial form that the present invention obtains eliminates PM2.5Air purification film, compared with traditional antibacterial, have the characteristics that efficiently, antibacterial, usage time length etc..

Description

A kind of multifunctional air purifying film and preparation method thereof
Technical field
The invention belongs to antipollution air filtration purification applications field, it is related to a kind of multifunctional air purifying film and its preparation A kind of method, and in particular to air purification film and its preparation side using nanoscale graphene and fluorescent conjugated polymer Method.
Technical background
It is well known that the survival of life be unable to do without air, and air pollution can seriously damage us and breathe vitals lung, Breathing problem is caused, people's health is seriously affected.Aggravate demand of the people for air purification with air pollution It is more and more urgent.With pellet (PM10), fine particle (PM2.5) it is characterized the regional atmospheric environment problem of pollutant It becomes increasingly conspicuous, damages body health of people, influence social harmony stabilization.As China's industrialization, urbanization deeply push away Into energy consumption continues to increase, and prevention and control of air pollution pressure continues to increase.As the improvement of people's living standards, people Become more concerned with the indoor environmental qualities problems such as living space, office space, the vehicles, Leisure Consumption place.
By investigating to Chinese air purification industry development and thinking to prospect analysis of market, due to air pollution, environment Out of control, smoking population such as persistently rises at the factors, and in recent years, the incidence of lung cancer is continued for rising.Public's environmental pollution Caused hidden danger shows unprecedented anxiety and concern, and Public Environmental Awareness constantly enhances.China's air purification at present Device family ownership less than 1%, advance by leaps and bounds presentation the gesture of development by following air purifier market.
Current most common purification air technique is activated carbon adsorption.Activated carbon is a kind of porous carbon containing matter, it It is constructed with highly developed hole, the porous structure of activated carbon is provided for a large amount of surface area, can fully be connect with gas It touches, the powerful absorption property of activated carbon is imparted by capillarity, it is made to be very easy to achieve the purpose that adsorbing contaminant.When The pore structure of activated carbon is slightly larger than the diameter of pernicious gas molecule, can allow pernicious gas molecule completely into the case of, Due to attracting each other between molecule, harmful impurity can be attracted in aperture, have the function that purify air.This Outside, using activated carbon small-bore the characteristics of, the Particulate Pollution object of major diameter can be blocked on the side of activated carbon in air, from And realize the purpose of filtration, purification.Other air purifying process further include:Light catalytic purifying, ozonization, Electrostatic Absorption, mistake Filter etc..Current indoor air purification product can be divided into two classes, and first kind product is inhaled using filtering, absorption, magnetization, electrostatic Dirt, anion eliminate the purifiers such as flue dust.This purifier based on physical cleaning, disadvantage are not eliminating by different Pollution caused by smell, pathogen, virus, microorganism etc..Second generation product is to generate ozone anion as major function Air purifier.Ozone has the function of disinfection, sterilization, deodorant to taste and removes paint pigment etc..
In the recent period, Beijing-tianjin-hebei Region mist, haze are multiple takes place frequently, and new feature, heavy metal ion, bacterium, virus is presented in atmosphere pollution Content it is in rising trend.Such serious pollution problem can not be coped with using traditional purification method, these technologies are not only Can there are problems that secondary pollution, and weak to the pathogenic bacteria killing ability in air, cannot achieve the purpose that be fully cleaned up.Cause This, develop a kind of novel material for air purification and technology of preparing be there is an urgent need to.
Invention content
The purpose of the present invention is for be most badly in need of at present solve air pollution problems inherent, according to the new spy of current atmosphere pollution Point, provide a kind of antimicrobial form eliminates PM2.5Air purification film.The purification membrane is total by nano graphene oxide and fluorescence The addition of conjugated polymer component, collection eliminate PM2.5, antibacterial and monitoring etc. it is multi-functional in one, PM can be improved2.5Removal rate, and With good bactericidal effect.
The technical scheme is that:
A kind of multifunctional air purifying film, the multifunctional air purifying film are one of following two:
The first air purification film, including basement membrane, and it is supported on epilamellar Multifunctional layered;Wherein, every square metre of base Load has 0.8~10g Multifunctional layereds on film;The Multifunctional layered is the mixed of nano graphene oxide and fluorescent conjugated polymer Object is closed, mass ratio is graphene oxide:Fluorescent conjugated polymer=5~20:1;The basement membrane is non-woven fabrics;
Alternatively, second of air purification film, is high-molecular organic material, nano graphene oxide and fluorescent conjugated polymer Spray fusing after mixing and obtain, using the purification membrane aperture be 0.2~12 μm, thickness be 500~5000 μm;Wherein, mass ratio For high-molecular organic material:Nano graphene oxide:Fluorescent conjugated polymer=50-300:3-6:1.
The material or high molecular material of the non-woven fabrics be polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), Polymethyl acrylate (PC), polystyrene (PS), ethylene-vinyl acetate copolymer (EVA), ethylene-octene copolymer (POE), Polypropylene (PP), polyethylene terephthalate (PET), poly- propionitrile (PAN), polyether sulfone (PES), gathers partially polyethylene (PE) One kind in vinyl fluoride (PVDF).
The nano graphene oxide is the graphene oxide of a diameter of 10-2000nm;The nano graphene oxide is The graphene oxide that the atom number of plies is 1-10 layers.
The fluorescent conjugated polymer includes:Pyridyl group porphyrin, phenyl porphyrin, methylenum careuleum, toluidine blue, haematoporphyrin, two Hydrogen porphines, poly- [3- (2 '-N, N, N- triithylamine base -1 '-ethyoxyl) -4- methylthiophenes hydrochloride], poly- 3- (Isosorbide-5-Nitraes-dioxa - 6- brominations trimethylamine groups-hexyl) thiophene-co-3- (1,4,7- trioxas-octyl) thiophene.
The preparation method of the first multifunctional air purifying film, includes the following steps:
(1) mixed liquor is obtained after mixing nano graphene oxide solution and fluorescent polymer solution, then using coating Method or infusion method are assembled on basement membrane;Wherein, a concentration of 0.1mg/mL~10mg/mL of nano graphene oxide aqueous solution, it is glimmering A concentration of 0.1mg/mL~10mg/mL of the aqueous solution of photopolymer;Mass ratio is graphene oxide:Fluorescent conjugated polymer= 5~20:1;The basement membrane is non-woven fabrics;
The infusion method, includes the following steps:It will be immersed in mixed liquor on basement membrane, after impregnating 1-12 hours, then adopt Take the mode of suction filtration by mixed liquor nano graphene oxide solution and fluorescent polymer be supported on basement membrane;Every square metre of base Load has 0.8~10g nano graphene oxides solution and fluorescent polymer on film;
The cladding process, includes the following steps:By mixed liquor with membrane surface is coated onto, coating number is 1-20 times, is made Adhere to 0.8~10g nano graphene oxides solution and fluorescent polymer on every square metre of basement membrane;
(2) in the organic basement membrane merging vacuum drying chamber obtained upper step, 20-60 DEG C, vacuum degree is under 100-1000Pa Drying time is 1-24 hours.
The preparation method of second of multifunctional air purifying film, includes the following steps:
(1) organic polymer is melted at 120-160 DEG C;
(2) and then nano graphene oxide solution and fluorescent conjugated polymer solution is added, stirs evenly, wherein nanometer A concentration of 0.1mg/mL~10mg/mL of graphene oxide water solution, a concentration of 0.1mg/mL of the aqueous solution of fluorescent polymer ~10mg/mL;Mass ratio is high-molecular organic material:Nano graphene oxide:Fluorescent conjugated polymer=50-300:3-6:1;
(3) spray fusing method is utilized to be film-made, it is 0.2~6 μm to obtain membrane aperture;The thickness of film is 500~5000 μm;
(4) by film made from upper step at 20-60 DEG C, vacuum degree is that drying is 1-10 hours under 100-500Pa, obtains second Kind multifunctional air purifying film.
A kind of fluorescent conjugated polymer, the polymer are poly- 3- (Isosorbide-5-Nitrae-dioxa -6- brominations trimethylamine groups-hexyl) thiophene Pheno-co-3- (Isosorbide-5-Nitrae, 7- trioxas-octyl) thiophene, structural formula are as follows:
Wherein, m1m2For the degree of polymerization, m1=1-10;m2=1-10.
The present invention substantive distinguishing features be:
Graphene oxide is the oxide of graphene, it is inside graphene and surrounding is connected to oxygen-containing group at random, It is easy to further functionalization, can be combined with other molecules by a variety of non-covalent bonds such as hydrophobic effect, electrostatic interaction. Graphene oxide derives from a wealth of sources, cheap, and intensity is high, and controllability is strong, meets the requirement of the big production of scale.
Fluorescent conjugated polymer is made up of many extinction units conjugation, thus catches light ability with extremely strong. Nineteen ninety-five, Swager are put forward for the first time the concept of fluorescent conjugated polymer fluorescence signal enlarge-effect, when in detection architecture exist by When body molecule, the energy of polymer capture can carry out delocalization along entire conjugated backbone, be ultimately transferred to acceptor molecule to put Its big fluorescence signal (i.e. " molecular line effect "), this is particularly significant for improving imaging and diagnostic sensitivity.Small molecule is passed Sense system, when Small-molecule probe and detected material effect, detected material is one-to-one with small molecule, if detected material Concentration be less than Small-molecule probe concentration, only part sensor molecules generate response, so the sensing system based on small molecule Sensitivity can not be comparable with fluorescent conjugated polymer.It can be at double using the fluorescence signal amplification characteristic of fluorescent conjugated polymer Ground improves detection sensitivity, and new sensing modes are provided for the development of biosensor.Water soluble fluorescent conjugated polymer with The surfaces such as bacterium, fungi and virus combine, and can generate singlet oxygen under white light illumination as light-sensitive material and reach sterilization Effect in addition, fluorescent conjugated polymer for light power antimicrobial chemical therapy show toxic side effect it is small, to different types of disease Opportunistic pathogen has many advantages, such as bactericidal effect, and compared with antibiotic, it is not easy to which in-ductive drug -tolerance is a kind of efficiently excellent antibacterial Method.Purification membrane made by us uses the graphene oxide after ultrasonication, and graphene oxide layer is become smaller, then Group loads onto fluorescent conjugated polymer, is added to high-molecular organic material basement membrane, overcomes some technological difficulties, greatly improves and inhales Attached PM2.5It is realized while efficiency and kills harmful bacteria in purifying air event.
Beneficial effects of the present invention are:
The antimicrobial form that the present invention obtains eliminates PM2.5Air purification film, compared with traditional antibacterial, have efficiently, The features such as antibacterial, usage time length etc..
(1) air-filtering membrane provided by the invention is to the PM in air2.5Removal rate height up to 95% or so, it is completely full Sufficient PM2.5Protection requirements.
(2) air purification film provided by the invention has killing effect, antibiotic rate to bacterium, fungi, pathogen in air Up to 90% or more.
(3) air purification film provided by the invention can monitor the PM for being adsorbed on purification film surface in real time2.5And all kinds of cause of diseases Bacterium.
(4) service life of air purification film provided by the invention is long, and existing air-filtering membrane at most uses in the market 300 hours, air purification film service life provided by the invention was up to 1000 hours.
(5) air purification film provided by the invention uses electrostatic knot compared with existing air purification film currently on the market It closes, Absorptive complex wave, not will produce reentrainment of dust pollution.
Description of the drawings
Fig. 1 is the shape appearance figure for the nano graphene oxide that the present invention utilizes.
Fig. 2 is air-filtering membrane described in embodiment 1 to PM2.5Removal effect photo, wherein Fig. 2 a are using net Before change film PM in air is collected into using sampling film in Laboratory Module10Amount be 0.6mg photo;Fig. 2 b are using real before purification membrane In hatch checking PM in air is collected into using sampling film2.5Amount be 4.5mg photo;Fig. 2 c are using in Laboratory Module after purification membrane It is collected into PM in air using sampling film10Amount be 0.5mg photo;Fig. 2 d be using in Laboratory Module after purification membrane using sampling Film is collected into PM in air2.5Amount be 3.4mg photo.
Fig. 3 is the air purification film anti-microbial property test result photo in embodiment 1, and wherein Fig. 3 a are cell plates culture Use the photo of bacterium amount in Laboratory Module after purification membrane;Fig. 3 b are photograph of the cell plates culture using bacterium amount in Laboratory Module after non-woven fabrics Piece.
Fig. 4 is that the air purification film detects PM in embodiment 12.5Design sketch, wherein Fig. 4 a are that purification membrane is not used in purple The photo of fluorescent brightness under outer lamp;Fig. 4 b are the photo of used purification membrane fluorescent brightness in the UV lamp.
Specific implementation mode
The present invention will be described in further detail with reference to the following examples.The following examples be for explanation purposes, and It is not intended to limit the scope of the present invention.Experimental method in following embodiments is conventional method unless otherwise specified.It is following Experiment material used in embodiment is to be commercially available from routine biochemistry reagent shop unless otherwise specified.
Graphene oxide of the present invention is well known materials.Wherein, the preparation method of graphene oxide can be found in document 282-286 pages of volume 442 of Graphene-based composite materials, Nature, 2006 years.It is respectively provided with and weighs three times Multiple experiment, results are averaged.Obtained nano graphene oxide is a diameter of 10-2000nm, the atom number of plies is 1-10 layers Graphene oxide, it is 300-400nm that following embodiment, which uses, single layer.
Embodiment 1,
The first step prepares nano graphene oxide aqueous solution:
Graphene oxide is taken to dissolve, the ultrasonic disperse in ice bath, ultrasonic power 100W, ultrasound 60 minutes.Size can be obtained about For the graphene oxide of 350nm, the atom number of plies is single layer.Dried for standby.
0.5g nano graphene oxides obtained above are taken, are dissolved into 1000mL ultra-pure waters, receiving for 0.5mg/mL is obtained Rice graphene oxide water solution;
It is prepared by second step, conjugated polymer:
Monomer (1) 3- (1,4- dioxa -6- hydroxy-hexanes base) thiophene synthesis route:
45mL pyridines, diethylene glycol 15mL (16.75g, 157.8mmol), (5.6g, 49.9mmol), cuprous iodide is added (1.4g, 7.34mmol) is added 3 bromo thiophene (5.16g, 31.6mmol) after being stirred to react 30min, rises to 100 DEG C, reaction 24h.Reaction solution is cooled to room temperature, dichloromethane dilution is added, filters, it is dry, obtain product pale yellowish oil liquid (4.16g, Yield 70%).
The characterization of product:1H NMR(400MHz,CDCl3,ppm):):(400MHzdd,1H),6.79(dd,1H),6.28 (dd, 1H), 4.13 (t, 2H), 3.85 (t, 2H), 3.77 (t, 2H), 3.67 (t, 2H), 2.16 (s, 1H);13CNMR(100MHz, CDCl3,ppm):):,1H);13C NMR(100MHz,CDCl3,ppm):2H), 3.67 (t, 2H) characterize datas show:It obtains Monomer 3- (1,4- dioxa -6- hydroxy-hexanes base) thiophene.
Monomer (2) 3- (1,4- dioxa -6- p-methyl benzenesulfonic acid base-hexyl) thiophene synthesis route:
Monomer (1) (1.16g, 6.17mmol) is dissolved in dichloromethane, 0 DEG C is cooled in ice-water bath, pyridine 1mL is added. TsCl (1.8g, 9.44mmol) is added, the reaction was continued for 24 hours.Use CH2Cl2Extraction, it is dry then with washing, it concentrates, purifying, most Light yellow solid (1.62g, 76%) is obtained eventually.
The characterization of product:1H NMR(400MHz,CDCl3,ppm):):(400MHz,CDCl3,ppm):Hz,CDCl3, Ppmdd, 1H), 6.75 (dd, 1H), 6.23 (dd, 1H), 4.19 (dd, 2H), 4.03 (dd, 2H), 3.76 (m, 4H), 2.42 (s, 3H).13C NMR(100MHz,CDCl3,ppm):):m,4H),2.42(s,3H).13C NMR(100MHz,CDCl3,),2H) Dd, 2H) H) Calcd.C 52.63, H 5.26, Found C 53.02, H 5.96. characterize datas show:Monomer 3- is obtained (1,4- dioxa -6- p-methyl benzenesulfonic acid base-hexyl)
The synthesis of monomer (3) 3- (the bromo- hexyls of 1,4- dioxas -6-) thiophene:
Monomer (2) (0.62g, 1.81mmol) is dissolved in 15mL acetone, addition LiBrH2O (0.68g, 6.48mmol), 8h is reacted.It is dry after extraction, it concentrates, purifying obtains pale yellow oily liquid (0.41g, 90%).
The characterization of product:1H NMR(400MHz,CDCl3,ppm):):(400MHz,CDCl3,ppm):dd,1H),6.27 (dd, 1H), 4.13 (dd, 2H), 3.87 (m, 4H), 3.49 (t, 2H) .13C NMR (100MHz, CDCl3, ppm):)=157.4, 124.7,119.5,97.6,71.4,69.9,69.6,69.5.MS(EI):M/z=250,252 (M) .C8H11O2SBr: Calcd.C 38.24, H 4.38, Found C 38.72, H 4.68. characterize datas show:Monomer 3- (1,4- dioxies are obtained The miscellaneous bromo- hexyls of -6-) thiophene
The synthesis of monomer (4) 3- (1,4- dioxa -6- brominations trimethylamine groups-hexyl) thiophene:
Monomer (3) (1.23g, 4.9mmol) is dissolved in tetrahydrofuran, methanol solution, overnight, reaction stops for 40 DEG C of reactions And after being cooled to room temperature, rotate, dissolving, 40mL n-hexanes are added and are settled out solid, centrifuges to obtain precipitation, it is solid that white is obtained after dry Body (1.44g, 94.7%).
The characterization of product:1H NMR(400MHz,CDCl3,ppm):):(400MHzdd,1H),6.27(dd,1H),4.13 (dd,2H),4.12(dd,2H),4.03(t,4H),3.89(dd,2H),3.50(s,9H).13C NMR(100MHz,CDCl3, ppm):):,3.50(s,9H).13C NMR(100MHz,CDCl3,ppm)::C NMR MS(ESI):M/z= 230.12.C11H20O2BrNO2S:Calcd.C 42.58,H 6.45,N 4.52Found C 41.72,H 6.66,N 4.49. Characterize data shows:Monomer 3- (1,4- dioxa -6- brominations trimethylamine groups-hexyl) thiophene is obtained
The synthesis of monomer (5) 3- (1,4,7- trioxas-octyl) thiophene:
2,6- lutidines, diethylene glycol monomethyl ether (5.89g, 49.1mmol), uncle are sequentially added in two mouth flask Butyl potassium alcoholate (3.58g, 32mmol) cuprous iodide (608mg, 0.36mmol), stirs evenly, and 3- bromine thiophenes are added after reacting 30min The lutidines solution of pheno (5.16g, 31.6mmol), reaction is overnight.Reaction solution is cooled to room temperature, is filtered, is washed, is done It is dry, it concentrates, chromatography, dry brown liquid (5.1g, 80%).
The characterization of product:1H NMR (400MHz, CDCl3, ppm):):(400MHdd,1H),6.78(dd,1H),6.26 (dd,1H),4.13(t,2H),3.85(t,2H),3.71(dd,2H),3.58(dd,2H),3.39(s,3H).13C NMR (100MHz, CDCl3, ppm):=157.6,124.6,119.6,97.5,72.0,70.7,69.7,69.5,59.1.MS (EI): M/z=202 (M) .C9H14O3S:Calcd.C 53.46, H 6.93, Found C 53.27, H 7.29. characterize datas show: Monomer 3- (1,4,7- trioxas-octyl) thiophene is obtained
Poly- 3- (1,4- dioxa -6- brominations trimethylamine groups-hexyl) thiophene-co-3- (1,4,7- trioxas-octyl) The synthesis of thiophene (PT):
10mL chloroforms are sequentially added in reaction bulb, monomer (4) is then added dropwise in anhydrous ferric trichloride (325mg, 2mmol) (155mg, 0.5mmol) and monomer (5) (101mg, 0.5mmol) reacts at room temperature 2 days.It is sudden that methanol is added into reaction mixture It goes out reaction, centrifugation, methanol/chloroform (1:1) it washs, tetrabutylammonium chloride is then added, generate black precipitate.Precipitation is filtered, Filter cake again with methanol dissolves, and hydrazine hydrate, solution is added to be spin-dried for, and washs, and utilizes the bag filter dialysis 2 that molecular cut off is 3500Da It;Solvent is removed, solid is dried to obtain.
The characterization of product:1H NMR(400MHz,CDCl3,ppm):):(400MHz,CDbr),4.50-4.18(br), 3.81-3.02(br),2.68-2.61(br),1.87(br).Characterize data shows:Poly- 3- (1,4- dioxa -6- bromines are obtained Change trimethylamine groups-hexyl) thiophene-co-3- (1,4,7- trioxas-octyl) thiophene (PT)
The fluorescent conjugated polymer, poly- 3- (Isosorbide-5-Nitrae-dioxa -6- brominations trimethylamine groups-hexyl) thiophene-co-3- (1,4,7- trioxas-octyl) thiophene (PT) structural formula is as shown below:
Wherein, m1m2For polymer, m1Value range:1-10;m2Value range is 1-10.
Third walks, and configures the aqueous solution of fluorescent conjugated polymer:
Fluorescent conjugated polymer:Poly- 3- (1,4- dioxa -6- brominations trimethylamine groups-hexyl) thiophene-co-3- (1,4, 7- trioxas-octyl) thiophene (PT) solution preparation:It takes 0.01g PT to be added in 10mL ultra-pure waters, obtains 1mg/mL storages Liquid.
4th step, the preparation of multifunctional air purifying film:
(1) by prefabricated non-woven fabrics according to requiring to be cut into right dimensions and shapes.The non-woven fabrics polypropylene Material, size are 25cm × 25cm, and aperture is 2000 μm;
(2) the nano graphene oxide aqueous solution of a concentration of 0.5mg/mL of 100mL is prepared;
(3) fluorescent conjugated polymer in dilution third step is to 0.1mg/mL;Take 100mL;
(4) mixed liquor is obtained after mixing nano graphene oxide solution obtained above and fluorescent polymer solution, so It will be immersed in mixed liquor on high-molecular organic material basement membrane afterwards, after impregnating 1 hour, then take the mode repeatedly filtered that will mix Nano graphene oxide solution and fluorescent polymer in liquid are all supported on basement membrane (mark is that filtrate is clarified);It often puts down at this time Load has 0.960g nano graphene oxides solution and fluorescent polymer on square rice basement membrane;
(5) in the basement membrane merging vacuum drying chamber obtained upper step, 30 DEG C, 200Pa, drying time:12 hours, obtain this The used purification membrane of invention.
It verifies purification membrane and adsorbs PM2.5Ability (this embodiment is with reference to People's Republic of China (PRC) environment protectment protection HJ 656-2013 and HJ 618-2013):
(a) particle PM is adopted by used on air sampler in Laboratory Module2.5And PM10Sampling film, take four, respectively Mark A, B and A ', B ' according to People's Republic of China's environment protectment protection HJ 656-2013 processing,
(b) test process:According to the national standard GB-T14295-2008 identical Laboratory Modules 1 established and Laboratory Module 2. In Laboratory Module 1, after generating smog using aerosol producer, opens sampler and collected in laboratory respectively using sampling film A, B PM2.5And PM10Particle, collect 2h after, obtain initial p M in Laboratory Module2.5And PM10Concentration value.In Laboratory Module 2, cigarette is used After fog generator generates smog, purifier of the unlatching equipped with air purification film 3 hours.After purification, it is then turned on sampler PM in laboratory is collected using sampling film A ', B '2.5And PM10Particle, obtain PM in the rear deck of Laboratory Module internal filter filtering2.5 And PM10Concentration value.
Result of calculation PM2.5And PM10Concentration, unit be μ g/m3
With reference to the accompanying drawings 2, it can obtain the indoor PM before opening air filter2.5And PM10Concentration and used air mistake PM in filter rear chamber2.5And PM10Concentration, you can obtain self-control purification membrane and reduce room air PM2.5And PM10The ability of concentration. As a result it can show, use PM in Laboratory Module after purification membrane2.5And PM10Amount reduce.It demonstrates and purifies sky using purification membrane of the present invention The ability of gas.
Verifying purification membrane antibacterial ability, (this embodiment is with reference to People's Republic of China (PRC) environment protectment protection GB 21551.3- 2010):
(a) picking E.coli single bacteriums fall in 5mL LB culture mediums (in 50 in (B551.3-20) 37 culture 12h;
(b) PBS (PBS concrete compositions are used:Sodium chloride 4g, potassium chloride 0.1g, disodium hydrogen phosphate 0.71g, potassium dihydrogen phosphate 0.135g is dissolved in 500mL ultra-pure waters, ionic strength 137mM PH=7.4) wash bacterium 3 times, then wash bacterium with PBS suspensions;
(c) suspended bacteria 10 is adjusted7Cfu/mL;
(d) bacterium solution in being walked on 10 μ L is taken, 990 μ L PBS is added, drips to the non-woven fabrics and Ben Fa of 1cm × 1cm respectively In bright purification membrane;
(e) purification membrane of non-woven fabrics in upper step and the present invention is respectively put into and is put into holes among 12 orifice plates, side hole adds Enter 3mL ultra-pure waters.It is put into 37 DEG C of culture 3h in incubator;
(f) it washes bacterium with 1mL PBS respectively in three times, collects, suspended again using 1mL PBS;
(g) bacterium solution, each concentration take 50 μ L coated plates in step on gradient dilution, are put into 37 DEG C of culture 12h in incubator;
(h) tablet observation is taken out to count.
With reference to the accompanying drawings 3 as a result, it was observed that, the dot on tablet a, point represents a bacterium, uses Laboratory Module after purification membrane Interior bacterium amount declines 90% or so.Demonstrate the ability of purification membrane antibacterial of the present invention.
Detect purification membrane service life:
(a) cigarette smoke generator is opened in the closed Laboratory Module established according to national standard GB-T14295-2008 to be allowed to not PM is given birth in stopping pregnancy2.5
(b) it is carried out at the same time filtering using the air purification film of non-woven fabrics and the present invention;
(c) it removed filter membrane every 12 hours to weigh, is put back to again after having weighed and continue to filter, when filter membrane weight no longer becomes When change, duration is exactly the service life of graphene oxide filter membrane;
When experiment proceeds to 300 hours, non-woven fabrics no longer increases weight, and non-woven fabrics service life is 300 hours.The present invention's Purification membrane no longer increases weight when proceeding to 1000 hours, and purification membrane service life of the present invention is 1000 hours.
Detect PM2.5Method.
In the Laboratory Module established according to national standard GB-T14295-2008, smog is persistently generated using cigarette smoke generator Afterwards, it is purified 1 hour using purification membrane.After purification, air purification film is removed, with the naked eye directly observes sample in the UV lamp Color, compared with original purification membrane is in the color under lamp, fluorescent quenching.
Embodiment 2-8
With embodiment 1, difference is for other steps and test method, fluorescent conjugated polymer used in step 3 by The aqueous solution of third step configuration fluorescent conjugated polymer, which replaces with, in embodiment 1 configures in order following fluorescent conjugated polymer:
(a) preparation of pyridylporphyrin TPP solution:It takes 0.0068g pyridylporphyrins TPP to be added in 20mL ultra-pure waters, obtains 0.25mM stores liquid.
(b) preparation of benzene porphyrin TP solution:It takes 0.0076g phenyl porphyrins TP to be added in 20mL ultra-pure waters, obtains 0.25mM stores liquid.
(c) preparation of sub- indigo plant M-B solution:It takes the sub- indigo plant M-B of 0.0016g that the ultrapure water dissolutions of 20mL are added and obtains 0.25mM storages Liquid.
(d) preparation of toluene blue T-BO solution:It takes 0.001g toluidine blues TBO that the ultrapure water dissolutions of 20mL are added and obtains 0.25mM Store liquid.
(e) preparation of haematoporphyrin H-P solution:It takes 0.0033g haematoporphyrin HP that the ultrapure water dissolutions of 20mL are added and obtains 0.25mM storages Liquid storage.
(f) preparation of chlorin P-C solution:It takes 0.003g chlorins PC that the ultrapure water dissolutions of 20mL are added and obtains 0.25mM Store liquid.
(g) fluorescent conjugated polymer:Poly- [3- (2 '-N, N, N- triithylamine base -1 '-ethyoxyl) -4- methylthiophene hydrochloric acid Salt] (PMNT) solution preparation:It takes 0.004g PMNT to be added in 5mL ultra-pure waters, obtains 0.125mM storage liquid.
Each middle fluorescent conjugated polymer embodiment result:
Fluorescent polymer title Reduce PM2.5Ability Antibacterial ability Service life (h)
PT 98% 90% 1000
Pyridylporphyrin TPP 97% 85% 1000
Benzene porphyrin TP 99% 87% 1000
Sub- indigo plant M-B 97% 87% 1000
Toluene blue T-BO 99% 86% 1000
Haematoporphyrin H-P 97% 89% 1000
Chlorin P-C 97% 90% 1000
PMNT 99% 89% 1000
Embodiment 9
The first step makes purification membrane:
Organic polymer polypropylene is melted at 140 DEG C;
Then nano graphene oxide solution and fluorescent conjugated polymer (poly- 3- (1,4- dioxa -6- bromination front threes is added Amido-hexyl) thiophene-co-3- (Isosorbide-5-Nitrae, 7- trioxas-octyl) thiophene (PT)) solution, it stirs evenly, wherein nano oxygen A concentration of 0.5mg/mL of graphite aqueous solution, 600mL, a concentration of 1.0mg/mL of the aqueous solution of fluorescent polymer, 100mL;Mass ratio is high-molecular organic material:Nano graphene oxide:Fluorescent conjugated polymer=200:3:1;
Said mixture is film-made using spray fusing method, it is 1 μm to obtain membrane aperture;2000 μm of the thickness of film;Wherein:Spray fusing is set It is standby:Wuxi Ai Jiemeisi Machinery Co., Ltd.s (spinneret width 30cm, die head draw ratio 1:10, orifice diameter 0.3mm, hole Deep 3mm.Process conditions:Air pressure:0.15-0.3MPa;Receive distance 5-9cm;Measure revolution speed:45-60Hz, preferably work Skill:Air pressure:0.25MPa;Receive distance:6cm;Measure revolution speed:50Hz (can obtain 0.45 μm of optimum aperture)
By film made from upper step at 40 DEG C, vacuum degree is that drying is 3 hours under 200Pa, obtains second of multi-functional air Purification membrane.
Second of multifunctional air purifying film test method is obtained with embodiment 1, experimental result is approximate with embodiment 1.
Embodiment 10-16
With embodiment 9, difference is the fluorescent conjugated polymer that uses by embodiment 9 for other steps and test method In fluorescent conjugated polymer (poly- 3- (1,4- dioxa -6- brominations trimethylamine groups-hexyl) thiophene-co-3- (1,4,7- tri- Oxa--octyl) thiophene (PT)) aqueous solution replace with successively the aqueous solution of pyridylporphyrin TPP, benzene porphyrin TP aqueous solution, The sub- indigo plant aqueous solution of M-B, the aqueous solution of toluene blue T-BO, the aqueous solution of haematoporphyrin H-P, chlorin P-C aqueous solution, gather The aqueous solution of [3- (2 '-N, N, N- triithylamine base -1 '-ethyoxyl) -4- methylthiophenes hydrochloride] (PMNT).
Test result is approximate with embodiment 9.
Unaccomplished matter of the present invention is known technology.

Claims (6)

1. a kind of multifunctional air purifying film, it is characterized in that the multifunctional air purifying film is one of following two:
The first multifunctional air purifying film, including basement membrane, and it is supported on epilamellar Multifunctional layered;Wherein, every square metre Load has 0.8 ~ 10g Multifunctional layereds on basement membrane;The Multifunctional layered is nano graphene oxide and fluorescent conjugated polymer Mixture, mass ratio are nano graphene oxide:Fluorescent conjugated polymer=5 ~ 20:1;The basement membrane is non-woven fabrics;
Alternatively, second of multifunctional air purifying film, is high-molecular organic material, nano graphene oxide and fluorescence conjugated polymerization Object mixing after spray fusing and obtain, the purification membrane aperture be 0.2 ~ 12 μm, thickness be 500 ~ 5000 μm;Wherein, mass ratio is to have Machine high molecular material:Nano graphene oxide:Fluorescent conjugated polymer=50-300:3-6:1;
The fluorescent conjugated polymer is:Poly- [3-(2 '-N, N, N- triithylamine base -1 '-ethyoxyl)- 4- methylthiophenes hydrochloride] Or poly- 3-(1,4- dioxa -6- brominations trimethylamine groups-hexyl)Thiophene-co -3-(1,4,7- trioxas-octyl)Thiophene Pheno.
2. multifunctional air purifying film as described in claim 1, it is characterized in that the material of the non-woven fabrics or organic high score Sub- material be polyvinyl chloride, polymethyl methacrylate, polymethyl acrylate, polystyrene, ethylene-vinyl acetate copolymer, One kind in ethylene-octene copolymer, polypropylene, polyethylene, polyethylene terephthalate, polyether sulfone, Kynoar.
3. multifunctional air purifying film as described in claim 1, it is characterized in that the nano graphene oxide is a diameter of 10- The graphene oxide of 2000nm;The nano graphene oxide is the graphene oxide that the atom number of plies is 1-10 layers.
4. the preparation method of multifunctional air purifying film as described in claim 1, it is characterized in that the first multi-functional air is net The preparation method for changing film includes the following steps:
(1)Mixed liquor is obtained after nano graphene oxide solution and fluorescent conjugated polymer solution are mixed, then using coating Method or infusion method are assembled on basement membrane;Wherein, the mg/mL of a concentration of 0.1mg/mL ~ 10 of nano graphene oxide solution, fluorescence A concentration of mg/mL of 0.1 mg/mL ~ 10 of the solution of conjugated polymer;Mass ratio is nano graphene oxide:It is fluorescence conjugated poly- Close object=5 ~ 20:1;
The basement membrane is non-woven fabrics;
The infusion method, includes the following steps:Basement membrane is immersed in mixed liquor, after impregnating 1-12 hours, then takes suction filtration Mode by mixed liquor nano graphene oxide solution and fluorescent conjugated polymer be supported on basement membrane;Every square metre of basement membrane Upper load has 0.8 ~ 10g nano graphene oxides solution and fluorescent conjugated polymer;
The cladding process, includes the following steps:Mixed liquor is coated to membrane surface, coating number is 1-20 times, makes often to put down Adhere to 0.8 ~ 10g nano graphene oxides solution and fluorescent conjugated polymer on square rice basement membrane;
(2)In the basement membrane merging vacuum drying chamber that upper step is obtained, 20-60 DEG C, vacuum degree is dry under 100-1000Pa, the time It is 1-24 hours.
5. the preparation method of multifunctional air purifying film as described in claim 1, it is characterized in that second of multi-functional air is net The preparation method for changing film includes the following steps:
(1)High-molecular organic material is melted at 120-160 DEG C;
(2)Then nano graphene oxide solution and fluorescent conjugated polymer solution is added, stirs evenly, wherein nano oxidized The mg/mL of a concentration of 0.1mg/mL ~ 10 of graphene solution, a concentration of 0.1 mg/mL ~ 10 of the solution of fluorescent conjugated polymer mg/mL;Mass ratio is high-molecular organic material:Nano graphene oxide:Fluorescent conjugated polymer=50-300:3-6:1;
(3)It is film-made using spray fusing method, it is 0.2 ~ 6 μm to obtain membrane aperture;The thickness of film is 500 ~ 5000 μm;
(4)By film made from upper step at 20-60 DEG C, vacuum degree is 1-10 hours dry under 100-500Pa, obtains work(more than second It can air purification film.
6. a kind of fluorescent conjugated polymer, it is characterized in that the polymer is poly- 3-(1,4- dioxa -6- brominations trimethylamine groups-oneself Alkyl)Thiophene-co -3-(1,4,7- trioxas-octyl)Thiophene, structural formula are as follows:
Wherein, m1=1-10;m2=1-10。
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