CN109574163A - A kind of synthetic method of acid and alkali-resistance magnetic Nano material - Google Patents
A kind of synthetic method of acid and alkali-resistance magnetic Nano material Download PDFInfo
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- CN109574163A CN109574163A CN201910035529.XA CN201910035529A CN109574163A CN 109574163 A CN109574163 A CN 109574163A CN 201910035529 A CN201910035529 A CN 201910035529A CN 109574163 A CN109574163 A CN 109574163A
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- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
Abstract
A kind of synthetic method of acid and alkali-resistance magnetic Nano material, it is related to the synthetic method of magnetic Nano material, and the present invention is to solve the existing technical problems with coated with silica magnetic material alkali resistance difference.This method: one, the alcohol dispersion liquid of magnetic nanoparticle is prepared；Two, acetonitrile is added in magnetropism nano particle alcohol dispersion liquid, mixes, add ammonium hydroxide reaction, be eventually adding butyl titanate reaction, separation washs, is dry, obtains acid and alkali-resistance magnetic Nano material；The acid and alkali-resistance magnetic Nano material is that the coated by titanium dioxide of magnetic nanoparticle amorphous is improved acidproof alkali ability, while having superparamagnetism, easy Magneto separate, rough surface, and large specific surface area can be used for sewage treatment field.
Description
Technical field
The present invention relates to a kind of synthetic method of acid and alkali-resistance magnetic Nano material, nano material utilization of polluted brine fields.
Background technique
With the fast development of modern industry, environment and energy crisis become two hang-ups that the world faces.Especially ring
Border problem gradually attracts people's attention, because environmental pollution causes threat to people's health.It is asked to solve environment
Topic, nano material has been widely used in sewage treatment field as a kind of new material, as carbon nanotube, nanofiber,
Metal nano oxide, magnetic Nano material etc., in these nano materials, magnetic Nano material is considered as a kind of and potentially answers
It can be quickly separated from the water load due to its magnetic characteristic with material or handle the magnetic material of pollutant, therefore drawn
The extensive concern of people is played.Some magnetic materials have also been used in practical application, but these materials are common there are one
Problem is easy to be corroded.The method for improving magnetic material corrosion resistance at present is coated with by magnetic material, to mention
The stability of high material, such as " nanometer science and technology magazine " (Journal of Nanoscience and
Nanotechnology the 7th 7750-7757 pages of the phase upper disclosed article " MFe in 2016)2O4-SiO2(M=Co, Mn, Ni) receives
Rice composite aerogel catalyst prepares the catalytic chemical gaseous phase deposition of multi-walled carbon nanotube " (Catalytic Chemical
Vapour Deposition on MFe2O4-SiO2 (M=Co, Mn, Ni) Nanocomposite Aerogel Catalysts
For the Production of Multi Walled Carbon Nanotubes) and " chemical engineering magazine " 2007
30-38 pages of the phase of volume 35 the 226th of article " mercaptan modified Fe3O4@SiO2It is inhaled as a kind of robust, efficient, circulation removal of mercury magnetism
Attached dose " (Thiol modified Fe3O4@SiO2as a robust,high effective,and recycling
Magnetic sorbent for mercury removal) it is using coated with silica magnetic material, to make magnetism
Material shows stronger acid resistance, but with SiO2The material of cladding is also corroded quickly under alkaline condition, makes its application
Field is restricted.
Summary of the invention
The present invention is to solve the existing technical problems with coated with silica magnetic material alkali resistance difference, and provide one
The synthetic method of kind acid and alkali-resistance magnetic Nano material.
The synthetic method of acid and alkali-resistance magnetic Nano material of the invention, sequentially includes the following steps:
One, the alcohol dispersion liquid of magnetic nanoparticle is prepared；
Two, acetonitrile is added in the alcohol dispersion liquid of magnetropism nano particle, ultrasonic disperse is uniform, obtains mixed liquor；Then
Ammonium hydroxide is added into mixed liquor, is reacted 0.5~0.8 hour under conditions of stirring and ultrasound；Butyl titanate is added, is being stirred
With react 1.5~3 hours under conditions of ultrasound, then stop ultrasound, be stirred to react 1~2 hour；By solid phase under magnet assistance
Object is separated, and ethyl alcohol, acetonitrile washes clean are successively used, dry under conditions of 50~60 DEG C, obtains acid and alkali-resistance magnetic Nano
Material.
The preparation process of acid and alkali-resistance magnetic Nano material of the invention is simple, and preparation cost is low, and preparation condition is mild, preparation
Acid and alkali-resistance magnetic Nano material be that the coated by titanium dioxide of magnetic nanoparticle amorphous is improved into acidproof alkali ability,
In soda acid after alternate treatment 18 times, original shape and size are still kept, while there is superparamagnetism, easy Magneto separate, surface
It is coarse, large specific surface area, advantage without secondary pollution.It can be used for sewage treatment field.
Detailed description of the invention
Fig. 1 is the XRD spectra of acid and alkali-resistance magnetic Nano material prepared by embodiment 1；
Fig. 2 is the stereoscan photograph of acid and alkali-resistance magnetic Nano material prepared by embodiment 1；
Fig. 3 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 1 after 5 hypo acid alkali process is shone
Piece；
Fig. 4 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 1 after 7 hypo acid alkali process is shone
Piece；
Fig. 5 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 1 after 11 hypo acid alkali process is shone
Piece；
Fig. 6 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 1 after 15 hypo acid alkali process is shone
Piece；
Fig. 7 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 1 after 18 hypo acid alkali process is shone
Piece；
Fig. 8 is the stereoscan photograph of acid and alkali-resistance magnetic Nano material prepared by embodiment 2；
Fig. 9 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 2 after 9 hypo acid alkali process is shone
Piece；
Figure 10 is that scanning electron microscope of the acid and alkali-resistance magnetic Nano material of the preparation of embodiment 2 after 15 hypo acid alkali process is shone
Piece.
Specific embodiment
Specific embodiment 1: the synthetic method of the acid and alkali-resistance magnetic Nano material of present embodiment, according to the following steps into
Row:
One, the alcohol dispersion liquid of magnetic nanoparticle is prepared；
Two, acetonitrile is added in the alcohol dispersion liquid of magnetropism nano particle, ultrasonic disperse is uniform, obtains mixed liquor；Then
Ammonium hydroxide is added into mixed liquor, is reacted 0.5~0.8 hour under conditions of stirring and ultrasound；Butyl titanate is added, is being stirred
With react 1.5~3 hours under conditions of ultrasound, then stop ultrasound, be stirred to react 1~2 hour；By solid phase under magnet assistance
Object is separated, and ethyl alcohol, acetonitrile washes clean are successively used, dry under conditions of 50~60 DEG C, obtains acid and alkali-resistance magnetic Nano
Material.
Specific embodiment 2: the present embodiment is different from the first embodiment in that: magnetic Nano in step 1
Grain is ferroso-ferric oxide, ferrite magnetic material, nano zero valence iron, cobalt oxide body or nickel oxysome；Other and specific embodiment one
It is identical.
Specific embodiment 3: present embodiment is unlike specific embodiment two: the ethyl alcohol of ferroso-ferric oxide point
Dispersion liquid synthetic method is as follows:
(1) by FeCl3.6H2O、NH4Ac and polyethylene glycol are dissolved in ethylene glycol, 1~2h are stirred, then in stirring condition
Under be warming up to 140~180 DEG C and continue 1~1.2h of stirring, obtain dark solution；The FeCl3.6H2O、NH4Ac and poly- second
The mass ratio of glycol is 1:(2~2.2): (4~5)；FeCl3.6H2O and the mass ratio of ethylene glycol are 1:(35~40)；
(2) dark solution is transferred in reaction kettle, is then placed in air dry oven and is heated to 190~200 DEG C simultaneously
8~12h is kept the temperature, after the reaction was completed, is washed with water three times under magnet assistance, obtains Fe3O4Nano particle；By Fe3O4Nanometer
Grain dispersion in ethanol, obtains Fe3O4Nano particle alcohol dispersion liquid；
It is other to be identical with embodiment two.
Specific embodiment 4: present embodiment is unlike specific embodiment two: ferritic alcohol dispersion liquid
Preparation method sequentially includes the following steps:
By FeCl3.6H2The soluble-salt of O and metal M are that the ratio of 2:1 is scattered in deionized water in molar ratio, are obtained
Mixture, wherein M is Mn, Co or Mg；Mixture is heated to 80~90 DEG C and holding 2~3 hours under agitation, then
It is 10~10.5 that the NaOH that 8M is added, which adjusts the pH of solution, is further continued for stirring 2~3 hours at 80~90 DEG C, is subsequently cooled to room
Temperature separates solid formation under magnet assistance, and successively clean with water and ethanol washing, dispersion in ethanol, obtains iron oxygen
The alcohol dispersion liquid of body；
It is other to be identical with embodiment two.
Specific embodiment 5: being mixed in step 2 unlike one of present embodiment and specific embodiment one to four
In liquid, volume ratio 1:(1~2 of ethyl alcohol and acetonitrile)；It is other identical as one of specific embodiment one to four.
Specific embodiment 6: magnetic in step 2 unlike one of present embodiment and specific embodiment one to five
The quality of nano particle and the volume of ethyl alcohol acetonitrile and ratio be 1g:(90~130) mL；Other and specific embodiment one to five
One of it is identical.
Specific embodiment 7: magnetic in step 2 unlike one of present embodiment and specific embodiment one to six
The ratio of the volume for the ammonium hydroxide that the quality and mass concentration of nano particle are 25%~28% is 1g:(0.8~2) mL；Other and tool
One of body embodiment one to six is identical.
Specific embodiment 8: magnetic in step 2 unlike one of present embodiment and specific embodiment one to seven
The ratio of the volume of the quality and butyl titanate of nano particle is 1g:(2~4) mL；One of other and specific embodiment one to seven
It is identical.
Specific embodiment 9: dry in step 2 unlike one of present embodiment and specific embodiment one to eight
Time be 12~14 hours；It is other identical as one of specific embodiment one to eight.
Beneficial effects of the present invention are verified with the following examples:
Embodiment 1: the synthetic method of the acid and alkali-resistance magnetic Nano material of the present embodiment sequentially includes the following steps:
One, Fe is prepared3O4Magnetic nanoparticle alcohol dispersion liquid, specific synthesis step are as follows:
(1) by 1.6g FeCl3.6H2O、3.2g NH4Ac and 6.4g polyethylene glycol is dissolved in 60g ethylene glycol, stirs 1h,
Then it is warming up to 140 DEG C under agitation and continues to stir 1h, obtains dark solution；
(2) dark solution is transferred in the reaction kettle of 100mL, is then placed in air dry oven and is heated to 190 DEG C
And 8h is kept the temperature, after the reaction was completed, the mixture in reaction kettle is poured into beaker, magnet is attached to beaker external wall, in magnet
Magnetic pull effect under, the solid formation in mixture is sucked, and liquid phase object is outwelled, and solid formation is washed with water three times, obtains 0.4g
Fe3O4Nano particle；By Fe3O4Nano particle is dispersed in 25mL ethyl alcohol, obtains Fe3O4Nano particle alcohol dispersion liquid；Second
Fe in alcohol dispersion liquid3O4The concentration of nano particle is 16g/L；
Two, to Fe3O425mL acetonitrile is added in nano particle alcohol dispersion liquid, ultrasonic 0.5h is uniformly dispersed, is mixed
Liquid；Then the ammonium hydroxide that 0.5mL mass percentage concentration is 25% is added into mixed liquor, is reacted under conditions of stirring and ultrasound
0.5 hour；0.8mL butyl titanate is added, is reacted under conditions of stirring and ultrasound 1.5 hours, ultrasound, stirring are then stopped
Reaction 1 hour；Solid formation is separated under magnet assistance, ethyl alcohol, acetonitrile washes clean are successively used, under conditions of 50 DEG C
It is 12 hours dry, obtain acid and alkali-resistance magnetic Nano material；It is weighed, acid and alkali-resistance magnetic Nano material 0.53g.
Fe in the present embodiment step 23O4Fe in nano particle alcohol dispersion liquid3O4The weight of nano particle is 0.4g,
After subsequent processing, 0.53g acid and alkali-resistance magnetic Nano material is obtained, increased weight 0.13g.Illustrate in Fe3O4Nano particle outsourcing
It has been covered with TiO2Layer.
The XRD spectra of the present embodiment acid and alkali-resistance magnetic Nano material is as shown in Figure 1, curve a is to obtain in step 1 in Fig. 1
Fe3O4The XRD spectra of nano particle, b are the XRD spectra of the present embodiment acid and alkali-resistance magnetic Nano material, it will be seen from figure 1 that
TiO in cladding2Afterwards, there is not new peak value in material, illustrates material TiO2It is amorphous titanium dioxide.
The stereoscan photograph for the acid and alkali-resistance magnetic Nano material that the present embodiment obtains is as shown in Fig. 2, can from Fig. 2
Out, it is spheric granules that the present embodiment, which obtains acid and alkali-resistance magnetic Nano material, and the diameter of particle is 100~200nm, rough surface.
In order to verify the resistance to acid and alkali of material manufactured in the present embodiment, by 0.1g, the acid and alkali-resistance magnetic Nano material is first in 1M
Hydrochloric acid in stir 2 hours, be washed with deionized water after filtering out, then to be placed in the sodium hydroxide solution of 0.3M stirring 2 small
When, it is washed with deionized water after filtering out, it is dry, it weighs；It is placed on hydrochloric acid again, stirs in sodium hydroxide solution, repeats the 5th
It is secondary, 7 times, 11 times, 15 times, the scanner electromicroscopic photographs of 18 materials successively as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, from
Fig. 3~7 can be seen that the acid and alkali-resistance magnetic Nano material after 18 hypo acid alkali process, still keep complete spheric granules,
After 18th processing, weight 0.95g, weight reduction rates 2% illustrate that the material has good resistance to acid and alkali.
Comparative test: this test Fe that unlike the first embodiment prepared by step 13O4Nano particle is dried,
Without being dispersed in ethyl alcohol, specific steps are as follows:
One, magnetic ferroferric oxide nanometer particle is prepared, specific synthesis step is as follows:
(1) by 1.6g FeCl3.6H2O、3.2gNH4Ac and 6.4g polyethylene glycol is dissolved in 60g ethylene glycol, stirs 1h,
Then it is warming up to 140 DEG C under agitation and continues to stir 1h, obtains dark solution；
(2) dark solution is transferred in the reaction kettle of 100mL, is then placed in air dry oven and is heated to 190 DEG C
And 8h is kept the temperature, after the reaction was completed, the mixture in reaction kettle is poured into beaker, magnet is attached to beaker external wall, in magnet
Magnetic pull effect under, the solid formation in mixture is sucked, and liquid phase object is outwelled, and solid formation is washed with water three times, is in temperature
It is 8 hours dry under the conditions of 60 DEG C, obtain the Fe of 0.4g3O4Nano particle；
Two, to Fe3O4Nano particle is added in the mixed solution prepared by 25mL acetonitrile and 25mL ethyl alcohol, ultrasonic 0.5h
It is uniformly dispersed, obtains mixed liquor；Then into mixed liquor be added 0.5mL mass percentage concentration be 25% ammonium hydroxide, stirring and
It is reacted 0.5 hour under conditions of ultrasound；0.8mL butyl titanate is added, is reacted 1.5 hours under conditions of stirring and ultrasound,
Then stop ultrasound, be stirred to react 1 hour；Solid formation is separated under magnet assistance, is successively washed with ethyl alcohol, acetonitrile dry
Only, 12 hours dry under conditions of 50 DEG C, obtain product；Weighed, the weight of product is 0.39g.
From comparative test it is found that the Fe of preparation3O4Nano particle cannot pass through subsequent cladding operation and exist after drying
Fe3O4Nano particle wraps titanium dioxide film.
A kind of embodiment 2: the synthetic method of acid and alkali-resistance magnetic Nano material of the present embodiment, the specific steps are as follows:
One, magnetic ferroferric oxide nanometer particle alcohol dispersion liquid is prepared, specific synthesis step is as follows:
(1) by 2g FeCl3.6H2O、4g NH4Ac and 10g polyethylene glycol is dissolved in 72g ethylene glycol, stirs 1h, then
It is warming up to 140 DEG C under agitation and continues to stir 1h, obtains dark solution；
(2) dark solution is transferred in the reaction kettle of 100mL, is then placed in air dry oven and is heated to 190 DEG C
And 8h is kept the temperature, after the reaction was completed, the mixture in reaction kettle is poured into beaker, magnet is attached to beaker external wall, in magnet
Magnetic pull effect under, the solid formation in mixture is sucked, and liquid phase object is outwelled, and solid formation is washed with water three times, obtains 0.6g
Fe3O4Nano particle；By Fe3O4Nano particle is dispersed in 30mL ethyl alcohol, obtains Fe3O4Nano particle alcohol dispersion liquid；Second
Fe in alcohol dispersion liquid3O4The concentration of nano particle is 20g/L；
Two, to Fe3O435mL acetonitrile is added in nano particle alcohol dispersion liquid, ultrasonic 1h is uniformly dispersed, and obtains mixed liquor；
Then the ammonium hydroxide that 0.6mL mass percentage concentration is 25% is added into mixed liquor, reaction 0.6 is small under conditions of stirring and ultrasound
When；2mL butyl titanate is added, is reacted under conditions of stirring and ultrasound 2 hours, is then stopped ultrasound, it is small to be stirred to react 1.5
When；Solid formation separated under magnet assistance, it first three times with ethanol washing, then is washed 2 times with acetonitrile, in 55 DEG C of item
It is 13 hours dry under part, obtain acid and alkali-resistance magnetic Nano material；It is weighed, acid and alkali-resistance magnetic Nano material 0.86g.
Fe in the present embodiment step 23O4Fe in nano particle alcohol dispersion liquid3O4The weight of nano particle is 0.6g,
After subsequent processing, 0.86g acid and alkali-resistance magnetic Nano material is obtained, increased weight 0.26g.Illustrate in Fe3O4Nano particle outsourcing
It has been covered with TiO2Layer.
The stereoscan photograph of acid and alkali-resistance magnetic Nano material manufactured in the present embodiment is as shown in figure 8, can from Fig. 8
Out, it is spheric granules that the present embodiment, which obtains acid and alkali-resistance magnetic Nano material, and the diameter of particle is about 200nm, rough surface.
Using the resistance to acid and alkali of method validation material manufactured in the present embodiment same as Example 1, by 9 times and 15 times
Soda acid reprocessing stereoscan photograph difference it is as shown in Figure 9 and Figure 10, by 9 times and 15 times soda acids reprocessing
Afterwards, form of spherical particles is still kept, the weight of material reduces 1.8% after 15 processing, illustrates material tool manufactured in the present embodiment
There is good resistance to acid and alkali.
Embodiment 3: the synthetic method of the acid and alkali-resistance magnetic Nano material of the present embodiment sequentially includes the following steps:
One, magnetism MnFe is prepared2O4Nano particle alcohol dispersion liquid, the preparation method is as follows:
By 1.2 grams of FeCl3.6H2O and 0.376 gram of MnSO4.H2O is scattered in 100mL deionized water, and stirring and dissolving obtains
Mixture is heated to 80 DEG C under agitation and is kept for 2 hours by mixture, and it is molten that the NaOH adjusting that concentration is 8M is then added
The pH of liquid is 10.5, is further continued for stirring 2 hours at 80 DEG C, then cool to room temperature, and isolates solid formation under magnet assistance
Come, water and ethanol washing 3 times is successively used, by obtain 0.43 gram of MnFe2O4Nano particle is dispersed in the ethyl alcohol of 30mL, is obtained
MnFe2O4The alcohol dispersion liquid of nano particle；
Two, to MnFe2O430mL acetonitrile is added in nano particle alcohol dispersion liquid, ultrasonic 1h is uniformly dispersed, is mixed
Liquid；Then the ammonium hydroxide that 0.6mL mass percentage concentration is 25% is added into mixed liquor, is reacted under conditions of stirring and ultrasound
0.8 hour；2mL butyl titanate is added, is reacted under conditions of stirring and ultrasound 3 hours, is then stopped ultrasound, be stirred to react
2 hours；Solid formation is separated under magnet assistance, is first used ethanol washing 3 times, then washed 2 times with acetonitrile, in 60 DEG C of item
It is 13 hours dry under part, obtain acid and alkali-resistance magnetic Nano material；It is weighed, acid and alkali-resistance magnetic Nano material 0.51g.
Using the resistance to acid and alkali of method validation material manufactured in the present embodiment same as Example 1, the results show that by
After 15 soda acid reprocessings, the weight of acid and alkali-resistance magnetic Nano material reduces 2.4%, illustrates material manufactured in the present embodiment
With good resistance to acid and alkali.
Claims (9)
1. a kind of synthetic method of acid and alkali-resistance magnetic Nano material, it is characterised in that this method sequentially includes the following steps:
One, the alcohol dispersion liquid of magnetic nanoparticle is prepared；
Two, acetonitrile is added in the alcohol dispersion liquid of magnetropism nano particle, ultrasonic disperse is uniform, obtains mixed liquor；Then to mixed
It closes in liquid and ammonium hydroxide is added, reacted 0.5~0.8 hour under conditions of stirring and ultrasound；Butyl titanate is added, is stirring and is surpassing
It is reacted under conditions of sound 1.5~3 hours, then stops ultrasound, be stirred to react 1~2 hour；By solid formation point under magnet assistance
It separates out and, successively use ethyl alcohol, acetonitrile washes clean, it is dry under conditions of 50~60 DEG C, obtain acid and alkali-resistance magnetic Nano material.
2. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1, it is characterised in that in step 1
Magnetic nanoparticle is ferroso-ferric oxide, ferrite magnetic material, nano zero valence iron, cobalt oxide body or nickel oxysome.
3. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 2, it is characterised in that four oxidations three
The synthetic method of iron is as follows:
(1) by FeCl3.6H2O、NH4Ac and polyethylene glycol are dissolved in ethylene glycol, are stirred 1~2h, are then risen under agitation
Temperature is to 140~180 DEG C and continues 1~1.2h of stirring, obtains dark solution；The FeCl3.6H2O、NH4Ac and polyethylene glycol
Mass ratio be 1:(2~2.2): (4~5)；FeCl3.6H2O and the mass ratio of ethylene glycol are 1:(35~40)；
(2) dark solution is transferred in reaction kettle, is then placed in air dry oven and is heated to 190~200 DEG C and keeps the temperature 8
~12h is washed with water three times under magnet assistance after the reaction was completed, obtains Fe3O4Nano particle；By Fe3O4Nano particle point
It dissipates in ethanol, obtains Fe3O4Nano particle alcohol dispersion liquid.
4. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 2, it is characterised in that ferritic
Preparation method is sequentially included the following steps: FeCl3.6H2The soluble-salt of O and metal M are that the ratio of 2:1 is scattered in molar ratio
In deionized water, mixture is obtained, wherein M is Mn, Co or Mg；Mixture is heated to 80~90 DEG C under agitation and is protected
It holds 2~3 hours, it is 10~10.5 that the NaOH that 8M is then added, which adjusts the pH of solution, is further continued for small in 80~90 DEG C of stirrings 2~3
When, it then cools to room temperature, separates solid formation under magnet assistance, it is successively clean with water and ethanol washing, it is dispersed in
In ethyl alcohol, ferritic alcohol dispersion liquid is obtained.
5. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1,2,3 or 4, it is characterised in that step
In rapid two in ethyl alcohol and acetonitrile mixed solution, volume ratio 1:(1~2 of ethyl alcohol and acetonitrile).
6. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1,2,3 or 4, it is characterised in that step
The ratio of the volume of the quality of magnetic nanoparticle and ethyl alcohol acetonitrile mixed solution is 1g:(90~130 in rapid two) mL.
7. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1,2,3 or 4, it is characterised in that step
The ratio of the volume for the ammonium hydroxide that the quality Yu mass concentration of magnetic nanoparticle are 25~28% in rapid two is 1g:(0.8~2) mL.
8. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1,2,3 or 4, it is characterised in that step
The ratio of the volume of the quality and butyl titanate of magnetic nanoparticle is 1g:(2~4 in rapid two) mL.
9. a kind of synthetic method of acid and alkali-resistance magnetic Nano material according to claim 1,2,3 or 4, it is characterised in that step
The dry time is 12~14 hours in rapid two.
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| US7594962B2 (en) * | 2003-01-17 | 2009-09-29 | Ciba Specialty Chemicals Corporation | Process for the production of porous inorganic materials or a matrix material containing nanoparticles |
| KR100768632B1 (en) * | 2006-10-30 | 2007-10-18 | 삼성전자주식회사 | Method for dispersing nanoparticles and method for producing nanoparticles thin film using the same |
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| CN102350354A (en) * | 2011-08-25 | 2012-02-15 | 绍兴文理学院 | Magnetically supported titanium dioxide photocatalyst and preparation method thereof |
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