CN109603915A - A kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning - Google Patents
A kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning Download PDFInfo
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- CN109603915A CN109603915A CN201811650679.3A CN201811650679A CN109603915A CN 109603915 A CN109603915 A CN 109603915A CN 201811650679 A CN201811650679 A CN 201811650679A CN 109603915 A CN109603915 A CN 109603915A
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- nano fibrous
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- fibrous membrane
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- 239000012528 membrane Substances 0.000 title claims abstract description 46
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 29
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 30
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 27
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- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 34
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 26
- -1 halide salt Chemical class 0.000 claims description 25
- 239000002994 raw material Substances 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 235000011187 glycerol Nutrition 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 13
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- ZSBXGIUJOOQZMP-JLNYLFASSA-N Matrine Chemical compound C1CC[C@H]2CN3C(=O)CCC[C@@H]3[C@@H]3[C@H]2N1CCC3 ZSBXGIUJOOQZMP-JLNYLFASSA-N 0.000 claims description 10
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- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 6
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 6
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- 238000000034 method Methods 0.000 abstract description 17
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- 229940073609 bismuth oxychloride Drugs 0.000 description 10
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- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 10
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- XVPBINOPNYFXID-JARXUMMXSA-N 85u4c366qs Chemical compound C([C@@H]1CCC[N@+]2(CCC[C@H]3[C@@H]21)[O-])N1[C@@H]3CCCC1=O XVPBINOPNYFXID-JARXUMMXSA-N 0.000 description 1
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- AAGFPTSOPGCENQ-UHFFFAOYSA-N Sophocarpin I Natural products C1CCC2CN3C(=O)C=CCC3C3C2N1CCC3 AAGFPTSOPGCENQ-UHFFFAOYSA-N 0.000 description 1
- IGXQFUGORDJEST-UHFFFAOYSA-N Sophocarpine Natural products O=C1C=CCC2C3CCCC4CCCC(CN12)C34 IGXQFUGORDJEST-UHFFFAOYSA-N 0.000 description 1
- 244000046101 Sophora japonica Species 0.000 description 1
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- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
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- 150000001450 anions Chemical class 0.000 description 1
- 238000004774 atomic orbital Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010231 banlangen Substances 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- CZMAIROVPAYCMU-UHFFFAOYSA-N lanthanum(3+) Chemical compound [La+3] CZMAIROVPAYCMU-UHFFFAOYSA-N 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
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- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
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- 238000006385 ozonation reaction Methods 0.000 description 1
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Classifications
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- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
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- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Plant Pathology (AREA)
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Abstract
The invention belongs to the technical fields of air cleaning, provide a kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning.Ultra-thin BiOX nanometer sheet is first made in this method, is then modified using lanthanum, spinning solution is then mixed and made into Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent, last electrostatic spinning is to get photocatalysis antibacterial nano fibrous membrane.It is compared with the traditional method, nano fibrous membrane prepared by the present invention, it is modified by carrying out La doped to BiOX, it has been obviously improved the photocatalytic activity of BiOX, the anti-microbial property of nano fibrous membrane is effectively increased by adding Radix Sophorae Flavescentis extractive liquid in spinning solution with efficient air purification effect, membrane material service life is extended, can be widely used for air purification field.
Description
Technical field
The invention belongs to the technical fields of air cleaning, provide a kind of photocatalysis antibacterial Nanowire for air cleaning
Tie up film and preparation method.
Background technique
Getting worse for air pollution brings serious threat to the physical and mental health of people.Especially interior decoration causes
Formaldehyde, benzene, dimethylbenzene, ammonia etc. and industrial processes in flue dust, nitrogen oxides, the misery gas etc. that generate, be all
Cause the principal element of air pollution.Therefore, study and apply efficient air purification material, it has also become extremely urgent demand.
Currently, the technical method for air cleaning mainly has filtration method, absorption method, light catalytic purifying method, anion net
Change method, ozonization, electrostatic precipitation, oxidation, purification etc., wherein filtering technique is due to simple process, low in cost, effect are obvious
As main air purifying process.And be used for air purification filter material mainly has electret melt-blown non-woven material, ultra-fine
Glass fiber material, modified polymeric films material and nano fibrous membrane etc..
Nano fibrous membrane is usually to be made using electrostatic spinning technique, and fibre diameter is in several nanometers to several hundred nanometers models
It encloses.On the one hand nano fibrous membrane has uniform aperture, high porosity and specific surface area, filter efficiency is high, on the other hand, fiber
There is " slippage effect " between diameter and air molecule, filtration resistance is small, therefore nano fibrous membrane is empty as efficient low-resistance is prepared
The important component of gas filter plant.But the air purification effect of single filtration method is limited, especially for the organic dirt of volatility
The small molecules pollution sources such as dye object can not effectively remove, and therefore, the technology synergies such as filtering technique and photocatalysis, absorption are acted on and are carried out
The method of air cleaning becomes important developing direction.
In catalysis material, important component of the BiOX series photochemical catalyst as bismuthino catalysis material is
In recent years the novel inorganic class photochemical catalyst developed has apparent layer structure and suitable forbidden bandwidth, has very strong
The ability of photohole direct oxidation substrate, but the photocatalytic activity of BiOX is lower, becomes the master for restricting its development and application
Want factor.
In addition, air cleaning nano fibrous membrane is in use, it is easy to by the skyborne bacterium, fungi, mould of suspending
The invasion of equal microorganisms can be bred rapidly immediately when microbial adherence in free of air pollution object and deposits on nano fibrous membrane,
Air purification effect is not only influenced, can also reduce the service life of nano fibrous membrane, therefore for nano fibrous membrane anti-microbial property
Promotion also become important subject.
From the foregoing, it will be observed that integrating the multinomial technology such as filtering, absorption, photocatalysis, and anti-microbial property is good multi-functional
Nano fibrous membrane has a good application prospect in highly effective air purification air field.
Summary of the invention
Traditional nano fibrous membrane is when being used for air cleaning, due to the unicity of function, it is difficult to effectively realize efficiently empty
Gas purification, while anti-microbial property is poor, and in addition that there are visible light utilization efficiencies is low, photocatalytic activity is poor for BiOX photocatalyst
Disadvantage.It in response to this, can it is proposed that a kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning
Effectively realize photocatalysis, absorption, filtering technique synergistic effect, and anti-microbial property is good, long service life.
To achieve the above object, specific technical solution of the present invention is as follows:
A kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning, the nanofiber film preparation it is specific
Steps are as follows:
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin BiOX nanometer sheet is made；
(2) ultra-thin BiOX nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, the 1 ~ 2h of ultrasonication for being 30 ~ 50kHz with frequency is then placed in 16 ~ 18h of reaction in 80 ~ 90 DEG C of water-baths, will produce
Object is centrifugated and dries, and is placed in Muffle furnace, is warming up to 450 ~ 500 DEG C of 4 ~ 6h of calcining, and natural cooling is simultaneously collected, and obtained lanthanum changes
The ultra-thin BiOX nanometer sheet of property；
(3) matter is added in the modified BiOX nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 10 ~ 15%, is uniformly mixed, spinning solution is made；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane.
Preferably, step (1) halide salt is potassium chloride, in potassium iodide, potassium bromide, sodium chloride, sodium iodide, sodium bromide
One kind.
Preferably, the temperature of step (1) described hydro-thermal reaction is 150 ~ 170 DEG C, and the time is 15 ~ 18h.
Preferably, the parts by weight of step (1) each raw material are, five nitric hydrate bismuths, 35 ~ 45 parts by weight, glycerine 48 ~
60 parts by weight, 5 ~ 7 parts by weight of halide salt.
Preferably, the parts by weight of step (2) each raw material are ultra-thin 10 ~ 15 parts by weight of BiOX nanometer sheet, chlorination
15 ~ 20 parts by weight of lanthanum, 65 ~ 75 parts by weight of deionized water.
Preferably, step (3) Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root through ethyl alcohol extraction kuh-seng obtained
Bases solution.
Preferably, step (3) adsorbent is at least one of nano-carbon material, molecular sieve.
Preferably, the parts by weight of step (3) each raw material are lanthanum modified 3 ~ 6 parts by weight of BiOX nanometer sheet, kuh-seng
2 ~ 4 parts by weight of extracting solution, 30 ~ 35 parts by weight of polycaprolactam, 4 ~ 8 parts by weight of adsorbent, 47 ~ 61 parts by weight of formic acid solution.
Preferably, the voltage of step (4) described electrostatic spinning is 18 ~ 20kV, and receiving distance is 13 ~ 15cm, feed speed
For 0.5 ~ 0.8mL/h.
BiOX has apparent layer structure, can effectively polarized atom and atomic orbital, and inside formed from
Body internal electric field is conducive to the enhancing of carrier separation efficiency, while a large amount of defects that plane of crystal is formed are conducive to photonic absorbance
Enhancing.Since BiOX two dimensional crystal is thinner, crystal face ratio is also higher, and defect density and electric field intensity inside high are also got over
Height, itself photonic absorbance and carrier separation efficiency are also higher, therefore, improve BiOX series photochemical catalyst itself light
The most effectual way of absorption efficiency and carrier separation efficiency is the thickness for reducing BiOX two dimensional crystal.The present invention passes through height
The solvent (glycerine) of viscosity and high alcohol basic group can effectively realize the synthesis of the ultra-thin BiOX nanometer sheet of oxygen defect.
Further, BiOX utilizes visible light insufficient, and simple bismuth oxyhalide cannot reach good
Photocatalysis effect, and it is living using the catalysis that the method for rear-earth-doped, ion doping, semiconductors coupling can effectively improve BiOX
Property.The present invention is doped modification using lanthanum, since lanthanum ion can enter inside BiOX, changes lattice types, so that
Internal crystal framework forms lattice defect, improves band structure, and be formed about impurity energy level in the conduction band of bismuth oxyhalide, drops
Low catalyst required energy when exciting, captures electronics or hole, to inhibit electronics and hole-recombination, improves photocatalysis effect
Rate.
Further, the effective component of Radix Sophorae Flavescentis extractive liquid be Banlangen, be by leguminous plant kuh-seng dry root, plant
Strain, fruit made of the extraction of the organic solvents such as ethyl alcohol, are a kind of alkaloids, and main component has matrine, sophocarpine, oxidation Chinese scholartree
A variety of alkaloids such as fruit alkali, Sophoridine, with matrine, oxymatrine concentration highest.Matrine is natural plant drug, right
People and animals' low toxicity, has good antibacterial, bacteriostasis.The present invention directly adds the Radix Sophorae Flavescentis extractive liquid with broad-spectrum sterilization function
Into spinning solution, the antibacterial effect of nano fibrous membrane can be effectively improved.
The present invention also provides the photocatalysis antibacterial nanometers for air cleaning that a kind of above-mentioned preparation method is prepared
Tunica fibrosa.The nano fibrous membrane is then modified using lanthanum by the way that ultra-thin BiOX nanometer sheet is first made, then with
Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent are mixed and made into spinning solution, last electrostatic spinning and be made.
The present invention provides a kind of photocatalysis antibacterial nano fibrous membranes and preparation method for air cleaning, with existing skill
Art is compared, and the feature and excellent effect protruded is:
1. nano fibrous membrane prepared by the present invention has efficient air purification effect, can be widely applied to indoor air purification.
2. preparation method of the invention by preparing ultra-thin BiOX nanometer sheet, and is doped modification using lanthanum, show
Work improves the photocatalytic activity of BiOX, promotes air purification ability.
3. preparation method of the invention effectively increases nano fibrous membrane by adding Radix Sophorae Flavescentis extractive liquid in spinning solution
Anti-microbial property, extend membrane material service life.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxychloride nanometer sheet is made；Halide salt
For potassium chloride；The temperature of hydro-thermal reaction is 158 DEG C, time 17h；The parts by weight of each raw material are five nitric hydrate bismuths, 39 weight
Part, 55 parts by weight of glycerine, 6 parts by weight of halide salt；
(2) ultra-thin bismuth oxychloride nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 1.5h of 38kHz with frequency, is then placed in 86 DEG C of water-baths and reacts 17h, product is centrifugated
And dry, it is placed in Muffle furnace, is warming up to 470 DEG C of calcining 5h, natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxychloride of lanthanum is made and receives
Rice piece；The parts by weight of each raw material are ultra-thin 13 parts by weight of bismuth oxychloride nanometer sheet, 18 parts by weight of lanthanum chloride, 69 weight of deionized water
Measure part；
(3) matter is added in the modified bismuth oxychloride nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 13%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is nano-carbon material；The parts by weight of each raw material are that lanthanum is loaded modified
Ultra-thin 5 parts by weight of bismuth oxychloride nanometer sheet, 3 parts by weight of Radix Sophorae Flavescentis extractive liquid, 33 parts by weight of polycaprolactam, 5 weight of adsorbent
Part, 54 parts by weight of formic acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 19kV, and receiving distance is 14cm, feed speed 0.7mL/h.
Embodiment 2
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxyiodide nanometer sheet is made；Halide salt
For potassium iodide；The temperature of hydro-thermal reaction is 155 DEG C, time 17h；The parts by weight of each raw material are five nitric hydrate bismuths, 38 weight
Part, 56 parts by weight of glycerine, 6 parts by weight of halide salt；
(2) ultra-thin bismuth oxyiodide nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 2h of 35kHz with frequency, is then placed in 82 DEG C of water-baths and reacts 17.5h, product is centrifugated
And dry, it is placed in Muffle furnace, is warming up to 460 DEG C of calcining 5.5h, natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxyiodide of lanthanum is made
Nanometer sheet；The parts by weight of each raw material are ultra-thin 12 parts by weight of bismuth oxyiodide nanometer sheet, 16 parts by weight of lanthanum chloride, deionized water 72
Parts by weight；
(3) matter is added in the modified bismuth oxyiodide nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 11%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is molecular sieve；The parts by weight of each raw material, which are that lanthanum is loaded modified, to be surpassed
Thin 4 parts by weight of bismuth oxyiodide nanometer sheet, 3 parts by weight of Radix Sophorae Flavescentis extractive liquid, 31 parts by weight of polycaprolactam, 5 parts by weight of adsorbent, first
57 parts by weight of acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 18kV, and receiving distance is 14cm, feed speed 0.6mL/h.
Embodiment 3
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxybromide nanometer sheet is made；Halide salt
For potassium bromide；The temperature of hydro-thermal reaction is 165 DEG C, time 16h；The parts by weight of each raw material are five nitric hydrate bismuths, 42 weight
Part, 51 parts by weight of glycerine, 7 parts by weight of halide salt；
(2) ultra-thin bismuth oxybromide nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 1h of 45kHz with frequency, is then placed in 88 DEG C of water-baths and reacts 16.5h, product is centrifugated
And dry, it is placed in Muffle furnace, is warming up to 490 DEG C of calcining 4.5h, natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxybromide of lanthanum is made
Nanometer sheet；The parts by weight of each raw material are ultra-thin 14 parts by weight of bismuth oxybromide nanometer sheet, 19 parts by weight of lanthanum chloride, deionized water 67
Parts by weight；
(3) matter is added in the modified bismuth oxybromide nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 14%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is nano-carbon material；The parts by weight of each raw material are that lanthanum is loaded modified
Ultra-thin 5 parts by weight of bismuth oxybromide nanometer sheet, 4 parts by weight of Radix Sophorae Flavescentis extractive liquid, 34 parts by weight of polycaprolactam, 7 weight of adsorbent
Part, 50 parts by weight of formic acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 20kV, and receiving distance is 15cm, feed speed 0.7mL/h.
Embodiment 4
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxychloride nanometer sheet is made；Halide salt
For sodium chloride；The temperature of hydro-thermal reaction is 15 DEG C, time 18h；The parts by weight of each raw material are five nitric hydrate bismuths, 35 weight
Part, 60 parts by weight of glycerine, 5 parts by weight of halide salt；
(2) ultra-thin bismuth oxychloride nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 2h of 30kHz with frequency, is then placed in 80 DEG C of water-baths and reacts 18h, simultaneously by product centrifuge separation
Drying, is placed in Muffle furnace, is warming up to 450 DEG C of calcining 6h, and natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxychloride nanometer of lanthanum is made
Piece；The parts by weight of each raw material are ultra-thin 10 parts by weight of bismuth oxychloride nanometer sheet, 15 parts by weight of lanthanum chloride, 75 weight of deionized water
Part；
(3) matter is added in the modified bismuth oxychloride nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 10%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is molecular sieve；The parts by weight of each raw material, which are that lanthanum is loaded modified, to be surpassed
Thin 3 parts by weight of bismuth oxychloride nanometer sheet, 2 parts by weight of Radix Sophorae Flavescentis extractive liquid, 30 parts by weight of polycaprolactam, 4 parts by weight of adsorbent, first
61 parts by weight of acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 18kV, and receiving distance is 13cm, feed speed 0.5mL/h.
Embodiment 5
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxyiodide nanometer sheet is made；Halide salt
For sodium iodide；The temperature of hydro-thermal reaction is 170 DEG C, time 15h；The parts by weight of each raw material are five nitric hydrate bismuths, 45 weight
Part, 48 parts by weight of glycerine, 7 parts by weight of halide salt；
(2) ultra-thin bismuth oxyiodide nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 1h of 50kHz with frequency, is then placed in 90 DEG C of water-baths and reacts 16h, simultaneously by product centrifuge separation
Drying, is placed in Muffle furnace, is warming up to 500 DEG C of calcining 4h, and natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxyiodide nanometer of lanthanum is made
Piece；The parts by weight of each raw material are ultra-thin 15 parts by weight of bismuth oxyiodide nanometer sheet, 20 parts by weight of lanthanum chloride, 65 weight of deionized water
Part；
(3) matter is added in the modified bismuth oxyiodide nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 15%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is nano-carbon material；The parts by weight of each raw material are that lanthanum is loaded modified
Ultra-thin 6 parts by weight of bismuth oxyiodide nanometer sheet, 4 parts by weight of Radix Sophorae Flavescentis extractive liquid, 35 parts by weight of polycaprolactam, 8 weight of adsorbent
Part, 47 parts by weight of formic acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 20kV, and receiving distance is 15cm, feed speed 0.8mL/h.
Embodiment 6
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin bismuth oxybromide nanometer sheet is made；Halide salt
For sodium bromide；The temperature of hydro-thermal reaction is 160 DEG C, time 16h；The parts by weight of each raw material are five nitric hydrate bismuths, 40 weight
Part, 54 parts by weight of glycerine, 6 parts by weight of halide salt；
(2) ultra-thin bismuth oxybromide nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, it is the ultrasonication 1.5h of 40kHz with frequency, is then placed in 85 DEG C of water-baths and reacts 17h, product is centrifugated
And dry, it is placed in Muffle furnace, is warming up to 480 DEG C of calcining 5h, natural cooling is simultaneously collected, and the modified ultra-thin bismuth oxybromide of lanthanum is made and receives
Rice piece；The parts by weight of each raw material are ultra-thin 12 parts by weight of bismuth oxybromide nanometer sheet, 18 parts by weight of lanthanum chloride, 70 weight of deionized water
Measure part；
(3) matter is added in the modified bismuth oxybromide nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 12%, is uniformly mixed, spinning solution is made；Radix Sophorae Flavescentis extractive liquid is kuh-seng fruit, plant or root
Matrine solution obtained is extracted through ethyl alcohol in portion；Adsorbent is molecular sieve；The parts by weight of each raw material, which are that lanthanum is loaded modified, to be surpassed
Thin 4 parts by weight of bismuth oxybromide nanometer sheet, 3 parts by weight of Radix Sophorae Flavescentis extractive liquid, 33 parts by weight of polycaprolactam, 6 parts by weight of adsorbent, first
54 parts by weight of acid solution；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane；The voltage of electrostatic spinning is 19kV, and receiving distance is 14cm, feed speed 0.6mL/h.
Comparative example 1
In preparation process, BiOX is not modified using lanthanum, other preparation conditions and embodiment 6 are consistent.
Comparative example 2
In preparation process, it is not added with Radix Sophorae Flavescentis extractive liquid, other preparation conditions and embodiment 6 are consistent.
Performance test:
(1) 2h formaldehyde removal rate: being made easy air purifier for nano fibrous membrane produced by the present invention in conjunction with air cooler,
It is placed in aldehyde test device, temperature is 25 DEG C, relative humidity 55%, 1atm, and flow containing formaldehyde gas is 20L/min, 2h
When the test concentration of formaldehyde before and after nano fibrous membrane obtained through the invention, initial concentration n0, it is n by concentration after film1,
Utilize formula (n1-n0)/n0× 100% calculates formaldehyde removal rate；
(2) bacteriostasis rate:, will be of the invention respectively using staphylococcus aureus, Escherichia coli and bacillus subtilis as test strain
Nanofiber membrane sample and blank control film obtained are respectively put into the wide-mouth bottle of sterile 250mL, and bacterium is added dropwise in film surface
Liquid stoppers bottle cap, exposes 20h at room temperature, then using bacterium colony colony counting method difference test sample film and blank control film
On clump count, calculate bacteriostasis rate: R=(B-A)/B × 100%, wherein A be exposure after a certain period of time from membrane sample recycling bacterium
Number is fallen, B is the clump count on blank control film.
The data obtained is as shown in table 1.
Table 1:
Claims (10)
1. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning, which is characterized in that the Nanowire
Tieing up film preparation, specific step is as follows:
(1) five nitric hydrate bismuths are added in glycerine solvent, halide salt is slowly added under stirring, is then transferred to hydro-thermal
Reacted in reaction kettle, after cooling, centrifugation, washing, drying, ultra-thin BiOX nanometer sheet is made；
(2) ultra-thin BiOX nanometer sheet made from step (1), lanthanum chloride are added in deionized water, stir evenly, then exists
At room temperature, the 1 ~ 2h of ultrasonication for being 30 ~ 50kHz with frequency is then placed in 16 ~ 18h of reaction in 80 ~ 90 DEG C of water-baths, will produce
Object is centrifugated and dries, and is placed in Muffle furnace, is warming up to 450 ~ 500 DEG C of 4 ~ 6h of calcining, and natural cooling is simultaneously collected, and obtained lanthanum changes
The ultra-thin BiOX nanometer sheet of property；
(3) matter is added in the modified BiOX nanometer sheet of lanthanum made from step (2), Radix Sophorae Flavescentis extractive liquid, polycaprolactam, adsorbent
It measures in the formic acid solution that concentration is 10 ~ 15%, is uniformly mixed, spinning solution is made；
(4) spinning solution made from step (3) is added in electrostatic spinning apparatus, adjustment parameter carries out electrostatic spinning and urges to get light
Change antibacterial nanofiber membrane.
2. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: step (1) halide salt is one of potassium chloride, potassium iodide, potassium bromide, sodium chloride, sodium iodide, sodium bromide.
3. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: the temperature of step (1) described hydro-thermal reaction is 150 ~ 170 DEG C, and the time is 15 ~ 18h.
4. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: the parts by weight of step (1) each raw material are, five nitric hydrate bismuths, 35 ~ 45 parts by weight, 48 ~ 60 parts by weight of glycerine,
5 ~ 7 parts by weight of halide salt.
5. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: the parts by weight of step (2) each raw material are ultra-thin 10 ~ 15 parts by weight of BiOX nanometer sheet, lanthanum chloride 15 ~ 20
Parts by weight, 65 ~ 75 parts by weight of deionized water.
6. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: step (3) Radix Sophorae Flavescentis extractive liquid is that kuh-seng fruit, plant or root are molten through ethyl alcohol extraction matrine obtained
Liquid.
7. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: step (3) adsorbent is at least one of nano-carbon material, molecular sieve.
8. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: the parts by weight of step (3) each raw material are, modified 3 ~ 6 parts by weight of BiOX nanometer sheet of lanthanum, Radix Sophorae Flavescentis extractive liquid 2 ~
4 parts by weight, 30 ~ 35 parts by weight of polycaprolactam, 4 ~ 8 parts by weight of adsorbent, 47 ~ 61 parts by weight of formic acid solution.
9. a kind of preparation method of the photocatalysis antibacterial nano fibrous membrane for air cleaning according to claim 1, special
Sign is: the voltage of step (4) described electrostatic spinning be 18 ~ 20kV, receive distance be 13 ~ 15cm, feed speed be 0.5 ~
0.8mL/h。
10. a kind of photocatalysis antibacterial for air cleaning that any one of claim 1 ~ 9 preparation method is prepared is received
Rice tunica fibrosa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650679.3A CN109603915A (en) | 2018-12-31 | 2018-12-31 | A kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650679.3A CN109603915A (en) | 2018-12-31 | 2018-12-31 | A kind of photocatalysis antibacterial nano fibrous membrane and preparation method for air cleaning |
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| CN114656877A (en) * | 2022-02-25 | 2022-06-24 | 江阴卓普新型包装材料有限公司 | Hydrophobic coating for anti-wall-hanging container barrel and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114656877A (en) * | 2022-02-25 | 2022-06-24 | 江阴卓普新型包装材料有限公司 | Hydrophobic coating for anti-wall-hanging container barrel and preparation method thereof |
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Application publication date: 20190412 |