CN108940284A - A kind of magnetic nanometer photocatalyst and preparation method thereof - Google Patents
A kind of magnetic nanometer photocatalyst and preparation method thereof Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 15
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 15
- 229920001661 Chitosan Polymers 0.000 claims abstract description 14
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical class [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 14
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 15
- POJWUDADGALRAB-UHFFFAOYSA-N allantoin Chemical compound NC(=O)NC1NC(=O)NC1=O POJWUDADGALRAB-UHFFFAOYSA-N 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 14
- 239000008236 heating water Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 235000019441 ethanol Nutrition 0.000 claims description 11
- 239000004299 sodium benzoate Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- POJWUDADGALRAB-PVQJCKRUSA-N Allantoin Natural products NC(=O)N[C@@H]1NC(=O)NC1=O POJWUDADGALRAB-PVQJCKRUSA-N 0.000 claims description 7
- 150000001298 alcohols Chemical class 0.000 claims description 7
- 229960000458 allantoin Drugs 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 239000012265 solid product Substances 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 229960004756 ethanol Drugs 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 abstract description 14
- 239000003054 catalyst Substances 0.000 abstract description 12
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 229960000907 methylthioninium chloride Drugs 0.000 abstract description 4
- 230000001699 photocatalysis Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of magnetic nanometer photocatalysts and preparation method thereof.Magnetic nanometer photocatalyst includes the raw material of following parts by weight: 15-30 parts of nanoscale Fe3O4, 45-60 parts of nanoscale TiO2, 10-15 parts of sodium benzoates, 12-25 parts of polyvinylpyrrolidones, 10-15 parts of allantoins, 10-20 parts of chitosans.Magnetic nanometer photocatalyst of the invention is to nanoscale TiO2With nanoscale Fe3O4It is compound, the titanium dioxide optical catalyst rate of recovery can be improved to the greatest extent；The catalyst is placed in methylene blue solution, it is seen that light irradiation degradation recycles externally-applied magnetic field to recycle the catalyst, repeats light degradation methylene blue solution.The result shows that the photochemical catalyst of this method preparation has apparent visible light-responded, photocatalytic activity is high, recycle using external magnetic field reusable.
Description
Technical field
The present invention relates to nano-photocatalyst technical field, specifically a kind of magnetic nanometer photocatalyst and its preparation side
Method.
Background technique
In recent years, getting worse with environmental pollution, photocatalyst material become the hot spot of scientific research.In photocatalysis
Field, titanium dioxide because have chemical stability low in cost, high, strong oxidizing property is nontoxic, it is pollution-free the features such as and become make
With most photochemical catalysts, the material based on titanium dioxide has obtained widely grinding in terms of photochemical catalytic oxidation organic pollutant
Study carefully.Although titanium dioxide is stablized, band gap is wider, and light absorption is only limitted to ultra-violet (UV) band and near ultraviolet band, available energy
Still it is not achieved the 10% of the solar spectrum for being irradiated to ground.Also, it is compound due to the intrinsic light induced electron of semiconductor and hole
Property, keep the photo-quantum efficiency of light-catalyzed reaction very low, reduces the photocatalytic activity of photochemical catalyst.These problems are largely
On limit the practical application of titanium dioxide.
Therefore, in order to improve the efficiency of light energy utilization, photo-quantum efficiency, reactivity and photostability, to the table of titanium dioxide
Face modification, improving reactivity worth becomes the focus of scientific research.Currently, having to the surface modification method of titanium dioxide more
Kind, common mainly has: 1. wide band gap semiconducter and titanium dioxide is compound, can more effectively utilize the light absorbed
Energy；2. narrow gap semiconductor and titanium dioxide is compound, the purpose is to expand photochemical catalyst to the response range of light and inhibit electricity
Son is compound with hole；3. being modified using noble metal or rare earth element to titania additive metal, foreign ion is utilized
To change the concentration of electrons and holes in semiconductor；4. nonmetalloid can expand light and urge to the doping vario-property of titanium dioxide
Response range of the agent to light；5. being modified using organic dyestuff to titanium dioxide, urged according to photolytic activity Dye Adsorption in light
A certain amount of light-sensitive material is added in the property on agent surface in titanium dioxide, to expand the excitation wavelength range of titanium dioxide,
Enhance the reaction efficiency of light-catalyzed reaction.
Titanium deoxide catalyst after the above method is modified haves the shortcomings that difficult to recycle.Therefore, the present invention mentions
For a kind of magnetic nanometer photocatalyst and preparation method thereof easy to be recycled.
Summary of the invention
The purpose of the present invention is to provide a kind of magnetic nanometer photocatalysts and preparation method thereof, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme:
A kind of magnetic nanometer photocatalyst, the raw material including following parts by weight: 15-30 parts of nanoscale Fe3O4, 45-60 parts
Nanoscale TiO2, 10-15 parts of sodium benzoates, 12-25 parts of polyvinylpyrrolidones, 10-15 parts of allantoins, 10-20 parts of chitosans.
As a further solution of the present invention: the raw material including following parts by weight: 22 parts of nanoscale Fe3O4, 52 parts of nanometers
Grade TiO2, 13 parts of sodium benzoate, 20 parts of polyvinylpyrrolidones, 12 parts of allantoins, 15 parts of chitosans.
A kind of preparation method of magnetic nanometer photocatalyst, comprising the following steps:
(1) by nanoscale Fe3O4It is dispersed in 40-70 parts of dehydrated alcohols, ultrasound obtains suspension；
(2) sodium benzoate is mixed with polyvinylpyrrolidone, then feeds the mixture into 100-120 parts of dehydrated alcohol
In, obtain mixed liquor A；
(3) chitosan and allantoin are dissolved in 50-80 parts 55-80 DEG C of water, obtain mixed liquid B；
(4) suspension that step (1) obtains is mixed with the mixed liquor A that step (2) obtains；Then sonicated 10-
20min；Then gains are placed in heating water bath 20-40min at 65-80 DEG C, obtain mixed liquor C；
(5) mixed liquid B that step (3) obtains is added drop-wise in the resulting mixed liquor C of step (4), is placed in 75-80 DEG C and is lauched
Bath heating 20-30min, is then allowed to stand 1-2h, obtains brown product；
(6) the brown product Magnetic Isolation for obtaining step (5), and alternately washed three times with distilled water and dehydrated alcohol；
(7) product for obtaining step (6) and nanoscale TiO2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) reaction under high pressure
In kettle, 50-80 parts of dehydrated alcohols, the isothermal reaction 2-4h at 70-75 DEG C is added；
(8) product that step (7) obtains is cooled to room temperature, Magneto separate solid product, and washed three times with dehydrated alcohol,
Be placed at 50-60 DEG C dry, pulverize to 200-300 mesh to get.
As a further solution of the present invention: step (1) is by nanoscale Fe3O4It is dispersed in 48 parts of dehydrated alcohols, ultrasound,
Obtain suspension.
As a further solution of the present invention: step (2) mixes sodium benzoate with polyvinylpyrrolidone, then will mix
In the dehydrated alcohol for closing 110 parts of object addition, mixed liquor A is obtained.
As a further solution of the present invention: chitosan and allantoin are dissolved in 60 parts 65 DEG C of water by step (3), are obtained
To mixed liquid B.
As a further solution of the present invention: step (4) obtains the suspension that step (1) obtains and step (2) mixed
Close liquid A mixing；Then sonicated 13min；Then gains are placed in heating water bath 30min at 70 DEG C, obtain mixed liquor
C。
As a further solution of the present invention: the mixed liquid B that step (3) obtains is added drop-wise to obtained by step (4) by step (5)
Mixed liquor C in, be placed in heating water bath 22min at 78 DEG C, be then allowed to stand 1.3h, obtain brown product.
As a further solution of the present invention: the product and nanoscale TiO that step (7) obtains step (6)2Mixing is equal
It is even, it is subsequently placed in polytetrafluoroethylene (PTFE) autoclave, 70 parts of dehydrated alcohols is added, the isothermal reaction 3h at 72 DEG C.
As a further solution of the present invention: the product that step (7) obtains is cooled to room temperature by step (8), and Magneto separate is solid
Body product, and being washed three times with dehydrated alcohol, be placed at 55 DEG C dry, pulverize to 250 mesh to get.
Compared with prior art, the beneficial effects of the present invention are:
Magnetic nanometer photocatalyst of the invention is to nanoscale TiO2With nanoscale Fe3O4It is compound, it can improve to the greatest extent
The titanium dioxide optical catalyst rate of recovery；The catalyst is placed in methylene blue solution, it is seen that light irradiation degradation recycles additional
The catalyst is recycled in magnetic field, repeats light degradation methylene blue solution.The result shows that the photochemical catalyst of this method preparation has obviously
It is visible light-responded, photocatalytic activity is high, recycle using external magnetic field reusable.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
A kind of magnetic nanometer photocatalyst, the raw material including following parts by weight: 15 parts of nanoscale Fe3O4, 45 parts of nanoscales
TiO2, 10 parts of sodium benzoate, 12 parts of polyvinylpyrrolidones, 10 parts of allantoins, 10 parts of chitosans.
A kind of preparation method of magnetic nanometer photocatalyst, comprising the following steps: (1) by nanoscale Fe3O4It is dispersed in 40 parts
In dehydrated alcohol, ultrasound obtains suspension；(2) sodium benzoate is mixed with polyvinylpyrrolidone, is then fed the mixture into
In 100 parts of dehydrated alcohol, mixed liquor A is obtained；(3) chitosan and allantoin are dissolved in 50 parts 55 DEG C of water, are mixed
Close liquid B；(4) suspension that step (1) obtains is mixed with the mixed liquor A that step (2) obtains；Then sonicated 10min；
Then gains are placed in heating water bath 20min at 65 DEG C, obtain mixed liquor C；(5) mixed liquid B for obtaining step (3) is added dropwise
Into the resulting mixed liquor C of step (4), it is placed in heating water bath 20min at 75 DEG C, 1h is then allowed to stand, obtains brown product；(6)
The brown product Magnetic Isolation that step (5) is obtained, and alternately washed three times with distilled water and dehydrated alcohol；(7) by step (6)
Obtained product and nanoscale TiO2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) autoclave, 50 parts of anhydrous second are added
Alcohol, the isothermal reaction 2h at 70 DEG C；(8) product that step (7) obtains is cooled to room temperature, Magneto separate solid product, and uses nothing
Water-ethanol wash three times, be placed at 50 DEG C dry, pulverize to 200 mesh to get.
Embodiment 2
A kind of magnetic nanometer photocatalyst, the raw material including following parts by weight: 30 parts of nanoscale Fe3O4, 60 parts of nanoscales
TiO2, 15 parts of sodium benzoate, 25 parts of polyvinylpyrrolidones, 15 parts of allantoins, 20 parts of chitosans.
A kind of preparation method of magnetic nanometer photocatalyst, comprising the following steps: (1) by nanoscale Fe3O4It is dispersed in 70 parts
In dehydrated alcohol, ultrasound obtains suspension；(2) sodium benzoate is mixed with polyvinylpyrrolidone, is then fed the mixture into
In 120 parts of dehydrated alcohol, mixed liquor A is obtained；(3) chitosan and allantoin are dissolved in 80 parts 80 DEG C of water, are mixed
Close liquid B；(4) suspension that step (1) obtains is mixed with the mixed liquor A that step (2) obtains；Then sonicated 20min；
Then gains are placed in heating water bath 40min at 80 DEG C, obtain mixed liquor C；(5) mixed liquid B for obtaining step (3) is added dropwise
Into the resulting mixed liquor C of step (4), it is placed in heating water bath 30min at 80 DEG C, 2h is then allowed to stand, obtains brown product；(6)
The brown product Magnetic Isolation that step (5) is obtained, and alternately washed three times with distilled water and dehydrated alcohol；(7) by step (6)
Obtained product and nanoscale TiO2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) autoclave, 80 parts of anhydrous second are added
Alcohol, the isothermal reaction 4h at 75 DEG C；(8) product that step (7) obtains is cooled to room temperature, Magneto separate solid product, and uses nothing
Water-ethanol wash three times, be placed at 60 DEG C dry, pulverize to 300 mesh to get.
Embodiment 3
A kind of magnetic nanometer photocatalyst, the raw material including following parts by weight: 22 parts of nanoscale Fe3O4, 52 parts of nanoscales
TiO2, 13 parts of sodium benzoate, 20 parts of polyvinylpyrrolidones, 12 parts of allantoins, 15 parts of chitosans.
A kind of preparation method of magnetic nanometer photocatalyst, comprising the following steps: (1) by nanoscale Fe3O4It is dispersed in 48 parts
In dehydrated alcohol, ultrasound obtains suspension.(2) sodium benzoate is mixed with polyvinylpyrrolidone, is then fed the mixture into
In 110 parts of dehydrated alcohol, mixed liquor A is obtained.(3) chitosan and allantoin are dissolved in 60 parts 65 DEG C of water, are mixed
Close liquid B.(4) suspension that step (1) obtains is mixed with the mixed liquor A that step (2) obtains；Then sonicated 13min；
Then gains are placed in heating water bath 30min at 70 DEG C, obtain mixed liquor C.(5) mixed liquid B for obtaining step (3) is added dropwise
Into the resulting mixed liquor C of step (4), it is placed in heating water bath 22min at 78 DEG C, 1.3h is then allowed to stand, obtains brown product.
(6) the brown product Magnetic Isolation for obtaining step (5), and alternately washed three times with distilled water and dehydrated alcohol；(7) by step
(6) product and nanoscale TiO obtained2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) autoclave, 70 parts of addition is anhydrous
Ethyl alcohol, the isothermal reaction 3h at 72 DEG C.(8) product that step (7) obtains is cooled to room temperature, Magneto separate solid product is used in combination
Dehydrated alcohol wash three times, be placed at 55 DEG C dry, pulverize to 250 mesh to get.
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
Various changes can be made.
Claims (10)
1. a kind of magnetic nanometer photocatalyst, which is characterized in that the raw material including following parts by weight: 15-30 parts of nanoscales
Fe3O4, 45-60 parts of nanoscale TiO2, 10-15 parts of sodium benzoates, 12-25 parts of polyvinylpyrrolidones, 10-15 parts of allantoins,
10-20 parts of chitosans.
2. magnetic nanometer photocatalyst according to claim 1, which is characterized in that the raw material including following parts by weight:
22 parts of nanoscale Fe3O4, 52 parts of nanoscale TiO2, 13 parts of sodium benzoate, 20 parts of polyvinylpyrrolidones, 12 parts of allantoins, 15 parts
Chitosan.
3. a kind of preparation method of magnetic nanometer photocatalyst according to claim 1 to 2, which is characterized in that including
Following steps:
(1) by nanoscale Fe3O4It is dispersed in 40-70 parts of dehydrated alcohols, ultrasound obtains suspension；
(2) sodium benzoate is mixed with polyvinylpyrrolidone, is then fed the mixture into 100-120 parts of dehydrated alcohol,
Obtain mixed liquor A；
(3) chitosan and allantoin are dissolved in 50-80 parts 55-80 DEG C of water, obtain mixed liquid B；
(4) suspension that step (1) obtains is mixed with the mixed liquor A that step (2) obtains；Then sonicated 10-
20min；Then gains are placed in heating water bath 20-40min at 65-80 DEG C, obtain mixed liquor C；
(5) mixed liquid B that step (3) obtains is added drop-wise in the resulting mixed liquor C of step (4), is placed in water-bath at 75-80 DEG C and adds
Hot 20-30min, is then allowed to stand 1-2h, obtains brown product；
(6) the brown product Magnetic Isolation for obtaining step (5), and alternately washed three times with distilled water and dehydrated alcohol；
(7) product for obtaining step (6) and nanoscale TiO2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) autoclave,
50-80 parts of dehydrated alcohols, the isothermal reaction 2-4h at 70-75 DEG C is added；
(8) product that step (7) obtains is cooled to room temperature, Magneto separate solid product, and washed three times with dehydrated alcohol, is placed in
Dry, pulverize at 50-60 DEG C to 200-300 mesh to get.
4. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (1) is by nanometer
Grade Fe3O4It is dispersed in 48 parts of dehydrated alcohols, ultrasound obtains suspension.
5. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (2) is by benzene first
Sour sodium is mixed with polyvinylpyrrolidone, is then fed the mixture into 110 parts of dehydrated alcohol, is obtained mixed liquor A.
6. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (3) gathers shell
Sugar and allantoin are dissolved in 60 parts 65 DEG C of water, obtain mixed liquid B.
7. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (4) is by step
(1) suspension obtained is mixed with the mixed liquor A that step (2) obtains；Then sonicated 13min；Then gains are set
The heating water bath 30min at 70 DEG C, obtains mixed liquor C.
8. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (5) is by step
(3) mixed liquid B obtained is added drop-wise in the resulting mixed liquor C of step (4), is placed in heating water bath 22min at 78 DEG C, is then allowed to stand
1.3h obtains brown product.
9. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (7) is by step
(6) product and nanoscale TiO obtained2It is uniformly mixed, is subsequently placed in polytetrafluoroethylene (PTFE) autoclave, 70 parts of addition is anhydrous
Ethyl alcohol, the isothermal reaction 3h at 72 DEG C.
10. the preparation method of magnetic nanometer photocatalyst according to claim 3, which is characterized in that step (8) is by step
(7) product obtained is cooled to room temperature, Magneto separate solid product, and is washed three times with dehydrated alcohol, and dry, powder is placed at 55 DEG C
Be broken to 250 mesh to get.
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| CN201810923259.1A Pending CN108940284A (en) | 2018-08-14 | 2018-08-14 | A kind of magnetic nanometer photocatalyst and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319590A (en) * | 2011-05-27 | 2012-01-18 | 湖北富邦科技股份有限公司 | Tri-iron tetroxide/shitosan/TiO 2The nano composite photocatalytic preparation methods |
| CN102671662A (en) * | 2012-03-28 | 2012-09-19 | 安徽大学 | Preparation and application of novel easy-to-recycle high-efficient visible light catalyst |
| CN103920465A (en) * | 2014-04-25 | 2014-07-16 | 湖州华鼎贸易有限公司 | Novel indoor air purifying plate |
| CN104190354A (en) * | 2014-08-06 | 2014-12-10 | 明光中东吸附材料有限公司 | Modified attapulgite sewage treatment agent and preparation method thereof |
| CN106563421A (en) * | 2016-10-28 | 2017-04-19 | 当涂县金龙机械有限公司 | Normal-temperature composite oil-removing adsorbent for metal plating pretreatment capable of achieving sterilization and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319590A (en) * | 2011-05-27 | 2012-01-18 | 湖北富邦科技股份有限公司 | Tri-iron tetroxide/shitosan/TiO 2The nano composite photocatalytic preparation methods |
| CN102671662A (en) * | 2012-03-28 | 2012-09-19 | 安徽大学 | Preparation and application of novel easy-to-recycle high-efficient visible light catalyst |
| CN103920465A (en) * | 2014-04-25 | 2014-07-16 | 湖州华鼎贸易有限公司 | Novel indoor air purifying plate |
| CN104190354A (en) * | 2014-08-06 | 2014-12-10 | 明光中东吸附材料有限公司 | Modified attapulgite sewage treatment agent and preparation method thereof |
| CN106563421A (en) * | 2016-10-28 | 2017-04-19 | 当涂县金龙机械有限公司 | Normal-temperature composite oil-removing adsorbent for metal plating pretreatment capable of achieving sterilization and preparation method thereof |
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