CN109876741A - A kind of tourmaline and photocatalytic semiconductor composite hydrogel and its preparation method and application - Google Patents
A kind of tourmaline and photocatalytic semiconductor composite hydrogel and its preparation method and application Download PDFInfo
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- CN109876741A CN109876741A CN201910209276.3A CN201910209276A CN109876741A CN 109876741 A CN109876741 A CN 109876741A CN 201910209276 A CN201910209276 A CN 201910209276A CN 109876741 A CN109876741 A CN 109876741A
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- tourmaline
- titanium dioxide
- composite hydrogel
- semiconductor composite
- photocatalytic semiconductor
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Abstract
The present invention relates to a kind of tourmaline and photocatalytic semiconductor composite hydrogel and its preparation method and application, belong to technical field of composite materials.The tourmaline is made of with photocatalytic semiconductor composite hydrogel tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol water solution, wherein, the percentage that the dosage of the tourmaline powder and nanometer titanium dioxide titanium valve accounts for tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol water solution three's total weight is no more than 20%, and weight ratio used in the tourmaline powder and nanometer titanium dioxide titanium valve is 2:1.Tourmaline prepared by the present invention and photocatalytic semiconductor composite hydrogel, three-dimensional net structure is showed under microscope, photo absorption performance is good, has certain mechanical property, it can also be attached on other substrates and use, it is particularly possible to empty net products be cooperated to use independently using removal pollutant, air purification effect is improved, is had a extensive future.
Description
Technical field
The present invention relates to a kind of tourmaline and photocatalytic semiconductor composite hydrogel and its preparation method and application, belong to multiple
Condensation material technical field.
Background technique
As formaldehyde pollution event in recent years, water contamination accident take place frequently, environmental protection becomes the topic that people increasingly pay close attention to.
Conductor photocatalysis material has wide development prospect due to that can be catalyzed the decomposition of the pollutants such as formaldehyde.Wherein again to receive
Rice titanium dioxide is most potential catalysis material, and still, nano-titanium dioxide is a kind of wide band gap semiconducter, can only be purple
Outer light excitation；In addition, the electronics after excitation is easy to and hole-recombination, so that the photocatalysis of nano-titanium dioxide under visible light
Activity is lower.Studies have shown that tourmaline powder has spontaneous polarization properties, the hydrogen ion that polarization generates can be used as electronics and catch
Catch agent and effectively capture electronics, inhibit electronics and hole in conjunction with.Therefore, the photocatalysis such as tourmaline powder and nano-titanium dioxide half
The Application of composite of conductor material has a extensive future.
The two is made into composite granule and coating by currently available technology, but is easy to reunite in the former use process, the latter
Complex manufacturing technology, the presence for often having organic solvent, pollute environment.
Summary of the invention
The present invention in order to solve the above-mentioned technical problem, provide a kind of tourmaline and photocatalytic semiconductor composite hydrogel and its
Preparation method and application.
The technical scheme to solve the above technical problems is that a kind of tourmaline and photocatalytic semiconductor compound water congealing
Glue is made of, wherein the tourmaline powder and nano-silica tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol water solution
The percentage that the dosage of change titanium valve accounts for tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol water solution three's total weight is no more than
20%, weight ratio used in the tourmaline powder and nanometer titanium dioxide titanium valve is 2:1.
The beneficial effect of tourmaline of the present invention and photocatalytic semiconductor composite hydrogel is:
The present invention is using tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol as raw material, in the presence of tourmaline, nanometer
The photocatalysis efficiency of titanium dioxide greatly improves.
Tourmaline prepared by the present invention and photocatalytic semiconductor composite hydrogel show three-dimensional network knot under microscope
Structure, photo absorption performance is good, has certain mechanical property, can also be attached to other substrates independently using removal pollutant
Upper use, it is particularly possible to cooperate empty net products to use, improve air purification effect, have a extensive future.
Based on the above technical solution, the present invention can also be improved as follows.
Further, polyvinyl alcohol and the mass ratio of deionized water are 10:90, the poly- second in the polyvinyl alcohol water solution
The degree of polymerization of enol is 1600 ± 50.
Beneficial effect using above-mentioned further scheme be the tourmaline for preparing with photocatalytic semiconductor composite hydrogel i.e.
Be not in big grain defect, and keep properties of product proper.
Further, the nanometer titanium dioxide titanium valve is rutile type nano titanic oxide.
Further, the partial size of the tourmaline powder is greater than 2000 mesh.
Beneficial effect using above-mentioned further scheme is that the partial size the thin more be conducive to disperse.
Further, the dosage of the tourmaline powder and nanometer titanium dioxide titanium valve account for tourmaline powder, nanometer titanium dioxide titanium valve and
The 5%-10% of polyvinyl alcohol water solution three's total weight.
This law is bright also to provide the preparation method of a kind of tourmaline and photocatalytic semiconductor composite hydrogel, comprising:
1) tourmaline powder and nanometer titanium dioxide titanium valve are taken, 200-300 DEG C of high temperature pre-processes 1h after mixing, promotes surface molecular
Activity；
2) polyvinyl alcohol is taken, deionized water is added and prepares polyvinyl alcohol water solution, glass bar stirs evenly, then is placed on high speed
It is stirred under dispersion machine, stirring addition simultaneously 1) treated tourmaline powder and nanometer titanium dioxide titanium valve persistently stirs 30min, obtain
Mixed liquor；
3) 2) gained mixed liquor is put into 100MPa, melts 1h in 60 DEG C of high temperature and high pressure kettle, form coagulant liquid；
4) 3) gained coagulant liquid is put into spheroidal grinding tool or is laid on substrate, placed naturally up to removing bubble removing,
And be cooled to room temperature, obtain colloidal sol；
5) 4) gained colloidal sol is put into refrigerator, -20 DEG C of freezing 6h, then 0 DEG C of placement 2h, finally moves to and is placed at room temperature for 6h,
Two circulations repeatedly complete freeze-thaw process, obtain molding gel；
6) 5) the molding gel of gained is cleaned with deionized water, dried to get tourmaline and photocatalytic semiconductor Compound Water
Gel.
Tourmaline of the present invention and the beneficial effect of the preparation method of photocatalytic semiconductor composite hydrogel are:
This preparation method substantially increases material and removes organic dirt by the way that tourmaline is compound with photocatalytic semiconductor material
Contaminate the ability of object.It uses nontoxic inexpensive polyvinyl alcohol for substrate, tourmaline powder and nanometer is prepared by sol-gel method
Titanium dioxide composite hydrogel, manufacturing cost is low, pollution-free, simple and easy to do, and gel has three-dimensional net structure, and photo absorption performance is good
It is good, have certain mechanical property, can be used alone, can also be attached on other substrates and use, is conducive to marketing application.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in 2), the mixing speed of the high speed disperser is 300-500r/min.
Further, blender is set in 3) melting process, in the high temperature and high pressure kettle to ensure the uniformity of solution.
Further, in 6), the drying box dried the equipment used and be not more than 60 DEG C for temperature is dried to sample matter
Stop drying when amount no longer changes.
The present invention also provides a kind of tourmaline as described above and photocatalytic semiconductor composite hydrogel formaldehyde adsorption and/
Or the application in smog.
Specific embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Embodiment 1
A kind of preparation method of tourmaline and photocatalytic semiconductor composite hydrogel, comprising:
1) tourmaline powder and nanometer titanium dioxide titanium valve are taken, 300 DEG C of high temperature pre-process 1h after mixing；
Wherein, weight ratio used in the tourmaline powder and nanometer titanium dioxide titanium valve is 2:1, and the nanometer titanium dioxide titanium valve is
The partial size of rutile type nano titanic oxide, the tourmaline powder is greater than 2000 mesh.
2) taking the degree of polymerization is 1600 ± 50 polyvinyl alcohol, and the polyvinyl alcohol that addition deionized water prepares 10wt% is water-soluble
Liquid, glass bar stir evenly, then are placed under high speed disperser and stir, mixing speed 300r/min, stirring while addition 1) processing
Tourmaline powder and nanometer titanium dioxide titanium valve afterwards, persistently stir 30min, obtain mixed liquor；
Wherein, the additional amount of the tourmaline powder and nanometer titanium dioxide titanium valve account for polyvinyl alcohol water solution, tourmaline powder and
The 5%-10% of nanometer titanium dioxide titanium valve total weight；
3) 2) gained mixed liquor is put into 100MPa, melts 1h in 60 DEG C of high temperature and high pressure kettle, setting in high temperature and high pressure kettle
Blender ensures the uniformity of solution, forms the thick coagulant liquid of liquid；
4) 3) gained coagulant liquid is put into spheroidal grinding tool, places up to removing bubble removing, and be cooled to room temperature, obtains naturally
Colloidal sol；
It wherein, is to be conducive to later product effect because its surface area is big using spheroidal mold.
5) 4) gained colloidal sol is put into refrigerator, -20 DEG C of freezing 6h, then 0 DEG C of placement 2h, finally moves to and is placed at room temperature for 6h,
Two circulations repeatedly complete freeze-thaw process, obtain molding gel；
6) 5) the molding gel of gained is cleaned with deionized water, is dried in 50 DEG C of drying box, until sample quality is not
Stop drying when changing again to get tourmaline and photocatalytic semiconductor composite hydrogel particle, is circular gel particle, it is axial
Compressive strength > 2Mpa, modulus of elasticity in comperssion < 6Mpa.
Embodiment 2
A kind of preparation method of tourmaline and photocatalytic semiconductor composite hydrogel, comprising:
1) tourmaline powder and nanometer titanium dioxide titanium valve are taken, 300 DEG C of high temperature pre-process 1h after mixing；
Wherein, weight ratio used in the tourmaline powder and nanometer titanium dioxide titanium valve is 2:1, and the nanometer titanium dioxide titanium valve is
The partial size of rutile type nano titanic oxide, the tourmaline powder is greater than 2000 mesh.
2) taking the degree of polymerization is 1600 ± 50 polyvinyl alcohol, and the polyvinyl alcohol that addition deionized water prepares 10wt% is water-soluble
Liquid, glass bar stir evenly, then are placed under high speed disperser and stir, mixing speed 300r/min, stirring while addition 1) processing
Tourmaline powder and nanometer titanium dioxide titanium valve afterwards, persistently stir 30min, obtain mixed liquor；
Wherein, the additional amount of the tourmaline powder and nanometer titanium dioxide titanium valve account for polyvinyl alcohol water solution, tourmaline powder and
The 5%-10% of nanometer titanium dioxide titanium valve total weight；
3) 2) gained mixed liquor is put into 100MPa, melts 1h in 60 DEG C of high temperature and high pressure kettle, setting in high temperature and high pressure kettle
Blender ensures the uniformity of solution, forms the thick coagulant liquid of liquid；
4) 3) gained liquid thick coagulant liquid is laid on substrate, is placed naturally until removing bubble removing, and be cooled to
Room temperature obtains colloidal sol；
5) 4) gained colloidal sol is put into refrigerator, -20 DEG C of freezing 6h, then 0 DEG C of placement 2h, finally moves to and is placed at room temperature for 6h,
Two circulations repeatedly complete freeze-thaw process, obtain molding gel；
6) 5) the molding gel of gained is cleaned with deionized water, is dried in 50 DEG C of drying box, until sample quality is not
Stop drying when changing again to get tourmaline and photocatalytic semiconductor composite hydrogel film, attached gel film on base material
Tensile elastic deformation > 150%, tensile strength > 2.5Mpa.
Measure effect experiment:
Detect environment: temperature (25 ± 2) DEG C, ambient humidity (50 ± 10) %RH
In experiment, in 1.5m3Blank cabin and Laboratory Module in light cigarette respectively, wherein put in advance in Laboratory Module
Tourmaline and photocatalytic semiconductor composite hydrogel 200g prepared by good embodiment 1.Then start cabin in daylight in and electric wind
Fan, effect 12h, for 24 hours after, be put into PM2.5 detector in two cabins respectively, blank cabin data C after record effectA, Laboratory Module
Data CB。
1 smog removing effect experimental data of table
Wherein, removal rate y (%)=100%* (CA-CB)/CA, CAFor blank cabin concentration, CBFor Laboratory Module concentration.
It can be seen that tourmaline prepared by the present invention and photocatalytic semiconductor composite hydrogel to smog by 1 data of table
With preferable removal efficiency, removal rate is and rapid-action 90% or more, has a extensive future.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of tourmaline and photocatalytic semiconductor composite hydrogel, which is characterized in that by tourmaline powder, nanometer titanium dioxide titanium valve
It is formed with polyvinyl alcohol water solution, wherein the dosage of the tourmaline powder and nanometer titanium dioxide titanium valve accounts for tourmaline powder, nanometer two
Titanium oxide powder and the percentage of polyvinyl alcohol water solution three's total weight are no more than 20%, the tourmaline powder and nanometer titanium dioxide
Weight ratio used in titanium valve is 2:1.
2. tourmaline according to claim 1 and photocatalytic semiconductor composite hydrogel, which is characterized in that the polyethylene
Polyvinyl alcohol and the mass ratio of deionized water are 10:90 in alcohol solution, and the degree of polymerization of the polyvinyl alcohol is 1600 ± 50.
3. tourmaline according to claim 1 and photocatalytic semiconductor composite hydrogel, which is characterized in that the nanometer two
Titanium oxide powder is rutile type nano titanic oxide.
4. tourmaline according to claim 1 and photocatalytic semiconductor composite hydrogel, which is characterized in that the tourmaline
The partial size of powder is greater than 2000 mesh.
5. tourmaline according to claim 1-4 and photocatalytic semiconductor composite hydrogel, which is characterized in that institute
The dosage for stating tourmaline powder and nanometer titanium dioxide titanium valve accounts for tourmaline powder, nanometer titanium dioxide titanium valve and polyvinyl alcohol water solution three
The 5%-10% of total weight.
6. a kind of preparation method of tourmaline as described in any one in claim 1-5 and photocatalytic semiconductor composite hydrogel,
It is characterised by comprising:
1) tourmaline powder and nanometer titanium dioxide titanium valve are taken, 200-300 DEG C of high temperature pre-processes 1h after mixing；
2) polyvinyl alcohol is taken, deionized water is added and prepares polyvinyl alcohol water solution, glass bar stirs evenly, then is placed on high speed dispersion
It is stirred under machine, stirring addition simultaneously 1) treated tourmaline powder and nanometer titanium dioxide titanium valve persistently stirs 30min, must mix
Liquid；
3) 2) gained mixed liquor is put into 100MPa, melts 1h in 60 DEG C of high temperature and high pressure kettle, form coagulant liquid；
4) 3) gained coagulant liquid is put into spheroidal grinding tool or is laid on substrate, placed naturally up to removing bubble removing, and cold
But to room temperature, colloidal sol is obtained；
5) 4) gained colloidal sol is put into refrigerator, -20 DEG C of freezing 6h, then 0 DEG C of placement 2h, finally moves to and be placed at room temperature for 6h, so
Two circulations repeatedly complete freeze-thaw process, obtain molding gel；
6) 5) the molding gel of gained is cleaned with deionized water, dried to get tourmaline and photocatalytic semiconductor composite hydrogel.
7. preparation method according to claim 6, which is characterized in that in 2), the mixing speed of the high speed disperser
For 300-500r/min.
8. preparation method according to claim 6, which is characterized in that in 3) melting process, in the high temperature and high pressure kettle
Blender is set to ensure the uniformity of solution.
9. preparation method according to claim 6, which is characterized in that in 6), the equipment used of drying is temperature
Drying box no more than 60 DEG C is dried to and stops drying when sample quality no longer changes.
10. a kind of tourmaline as described in any one in claim 1-5 and photocatalytic semiconductor composite hydrogel are in formaldehyde adsorption
And/or the application in smog.
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Cited By (2)
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|---|---|---|---|---|
| CN111604044A (en) * | 2020-06-30 | 2020-09-01 | 郑州大学 | Preparation and application of tourmaline/titanium dioxide composite photocatalyst sol |
| CN111607115A (en) * | 2020-06-17 | 2020-09-01 | 大连理工大学 | Preparation method of high-strength hydrogel film capable of continuously treating dyeing sewage |
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| CN1861251A (en) * | 2005-05-12 | 2006-11-15 | 马变三 | Nano-anion coated film for air purification |
| JP2011212135A (en) * | 2010-03-31 | 2011-10-27 | Ishikawa Seishi Kk | Highly-functional deodorant japanese paper and method for producing the same |
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