CN115350696A - Filler with VOC (volatile organic compound) purifying capacity and preparation method thereof - Google Patents
Filler with VOC (volatile organic compound) purifying capacity and preparation method thereof Download PDFInfo
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- CN115350696A CN115350696A CN202211004396.8A CN202211004396A CN115350696A CN 115350696 A CN115350696 A CN 115350696A CN 202211004396 A CN202211004396 A CN 202211004396A CN 115350696 A CN115350696 A CN 115350696A
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- filler
- titanium dioxide
- nano titanium
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- polyethylene glycol
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- 239000000945 filler Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000012855 volatile organic compound Substances 0.000 title abstract description 17
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 241001474374 Blennius Species 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- 239000002202 Polyethylene glycol Substances 0.000 claims description 18
- 229920001223 polyethylene glycol Polymers 0.000 claims description 18
- 239000007822 coupling agent Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 239000012043 crude product Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 4
- 150000004645 aluminates Chemical class 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012456 homogeneous solution Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000011022 opal Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 150000002500 ions Chemical class 0.000 abstract description 11
- 230000001699 photocatalysis Effects 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- 239000012764 mineral filler Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/057—Selenium or tellurium; Compounds thereof
- B01J27/0573—Selenium; Compounds thereof
-
- 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
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a filler with VOC (volatile organic compounds) purifying capacity and a preparation method thereof, wherein the preparation method comprises the steps of preparing modified nano titanium dioxide, and carrying the modified nano titanium dioxide on a porous material; and finally, drying and crushing the product to obtain the mineral filler loaded with the hydrophilic nano titanium dioxide. The photocatalysis capacity of the nano titanium dioxide can be improved by improving the hydrophilicity of the nano titanium dioxide; after the hydrophilic nano titanium dioxide is carried on porous materials such as seaweed carbon and the like, the agglomeration of the nano titanium dioxide can be avoided, and the photocatalytic capacity of the nano titanium dioxide is further improved; the seaweed carbon and the like can actively release negative ions, so that the surrounding environment is further improved.
Description
Technical Field
The invention relates to the technical field of fillers, in particular to a filler with VOC (volatile organic compounds) purifying capacity and a preparation method thereof.
Background
Volatile Organic Compounds (VOCs) are a typical gaseous pollutant and can cause harm to the respiratory system, cardiovascular system, nervous system and the like of a human body, wherein benzene series represented by toluene is widely applied and becomes the key point for treating the VOCs. At present, the mainstream techniques for treating VOCs include photocatalysis, adsorption, low-temperature plasma, catalytic combustion and the like. The use of non-metallic materials such as glue, plastic, leather and the like in automobiles, particularly passenger cars, is increasing, and great challenge is brought to VOC of the whole automobiles. At present, methods such as photocatalyst and the like are used for promoting the health in a vehicle and reducing VOC and the like, and negative ions are generated by a negative ion generator or functional minerals are added, so that fresh driving and riding feeling is brought.
The common scheme of photocatalyst technology is to use nano TiO 2 Dispersing in deionized water to form suspension, and making into spray. The anion generator requires an additional interior space for arrangement, and is integrated with an air conditioning system.
However, in the actual using process, the nano TiO 2 The agglomeration phenomenon often occurs, the hydrophilicity is lower, and the photocatalytic effect is greatly reduced.
The negative ion generator needs to occupy the interior space, and the problems of software development, extra part cost and the like are also involved; the simple addition of functional minerals results in the deterioration of material properties.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a filler with purification capability for VOC and a preparation method thereof, which overcome the above-mentioned defects of the prior art.
The technical problem to be solved by the invention is realized by the following technical scheme:
a method for preparing a filler having VOC purifying ability, comprising the steps of:
step (1): dissolving polyethylene glycol in ethanol, and magnetically stirring to form a homogeneous solution;
step (2): mixing N, N-methylene bisacrylamide and nano TiO 2 Mixing 2-hydroxyethylamine with the polyethylene glycol alcoholic solution obtained in the step (1), and performing ultrasonic dispersion to obtain a mixed solution;
and (3): adding an initiator and ammonia water into the mixed solution obtained in the step (2) at normal temperature under the protection of nitrogen, and stirring to obtain a hydrophilic modified nano titanium dioxide crude product;
and (4): filtering the modified nano titanium dioxide crude product obtained in the step (3), and washing the filtered product with deionized water to be neutral;
and (5): roasting the porous filler at high temperature, cooling to room temperature, and sieving to obtain the porous filler with uniform particle size distribution;
and (6): adding the porous filler and the modified nano titanium dioxide in the step (5) into absolute ethyl alcohol dissolved with a coupling agent, magnetically stirring, and filtering to obtain a crude product loaded with hydrophilic nano titanium dioxide;
and (7): and (4) filtering, drying, crushing and sieving the crude product obtained in the step (6) to obtain the filler loaded with the hydrophilic nano titanium dioxide.
Preferably, in the step (1), the molecular weight of the polyethylene glycol is 200-1000, the hydroxyl value is 100-800, and the mass ratio of the polyethylene glycol to the ethanol is 1 (30-60); the concentration of the ethanol is more than or equal to 50 percent, the medium is water, and the stirring time is 1 to 2 hours.
Preferably, in the step (2), N, N-methylene bisacrylamide and nano TiO are adopted 2 The mass ratio of the 2-hydroxyethylamine to the polyethylene glycol is (0.8-3.3): (0.4-0.8): (3.3-5.2): 1, nano-TIO 2 The grain diameter is 10 nm-0.85 μm, and the ultrasonic dispersion time is 2-3 hours.
Preferably, in the step (3), the initiator is one or more of potassium persulfate, sodium persulfate or ammonium persulfate, and the mass ratio of the initiator to the polyethylene glycol is (0.04-0.20): 1, the concentration of ammonia water is 10-20%, and the mass ratio of ammonia water to polyethylene glycol is (0.1-1.0): 1, stirring for 6-8 hours.
Preferably, in the step (5), the porous material is selected from one or more of opal, travertine and seaweed carbon, and the roasting conditions at high temperature are as follows: roasting at 600-650 deg.c for 0.5-2 hr.
Preferably, in the step (6), the mass ratio of the porous filler, the hydrophilic nano titanium dioxide, the absolute ethyl alcohol and the coupling agent is (1.5-2.8): (0.5-1.0): (10-30): 1, the coupling agent is a silane coupling agent, an aluminate coupling agent or a titanate coupling agent.
Preferably, in step (6), the reaction is carried out under magnetic stirring for 3 to 6 hours.
Preferably, in the step (7), the drying temperature is 80-110 ℃, and the drying time is 3-8 hours.
The filler with the VOC purifying capacity is prepared by the preparation method.
Use of a filler prepared according to the above-described preparation method in the manufacture of a motor vehicle.
The photocatalysis capacity of the nano titanium dioxide can be improved by improving the hydrophilicity of the nano titanium dioxide; after the hydrophilic nano titanium dioxide is carried on the seaweed carbon and other porous materials, the agglomeration of the nano titanium dioxide can be avoided, and the photocatalytic capability of the nano titanium dioxide is further improved; the seaweed carbon and the like can actively release negative ions, so that the surrounding environment is further improved.
The technical scheme of the invention has the following beneficial effects:
(1) The hydrophilicity of the nano titanium dioxide is improved, and water molecules can promote the photocatalyst to capture cavities on valence bands in the formaldehyde degradation process, so that hydroxyl radicals are generated, the degradation of organic compounds is accelerated, and the catalytic degradation capability is improved;
(2) The porous filler can effectively load the nano titanium dioxide, and the agglomeration of the nano titanium dioxide is avoided, so that the reduction of the photocatalytic capacity is avoided;
(3) The minerals such as seaweed carbon and mirabilite can independently release negative ions, and when the material is used, the concentration of the transmitted negative ions can be improved, and the comfort is improved.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
Example 1 preparation of modified Nano titanium dioxide having hydrophilicity
Step 1: dissolving 1g of polyethylene glycol in 50g of 75% ethanol, and magnetically stirring for 2 hours at normal temperature to obtain a homogeneous solution;
step 2: 1.2g of N, N-methylene-bisacrylamide and nano TiO 2 0.5g of 2-hydroxyethylamine and 3.5g of 2-hydroxyethylamine are mixed with the polyethylene glycol alcohol obtained in the step 1, and ultrasonic dispersion is carried out for 2 hours to obtain mixed liquor;
and step 3: under the protection of nitrogen at normal temperature, adding 0.08g of sodium persulfate into the mixed solution obtained in the step 2, and gradually dropping excessive ammonia water with the concentration of 20%;
and 4, step 4: the product of step 3 was washed by filtration.
Example 2 preparation of modified Nano titanium dioxide having hydrophilicity
Step 1: dissolving 1g of polyethylene glycol in 40g of 50% ethanol, and magnetically stirring at normal temperature for 1 hour to obtain a homogeneous solution;
step 2: 2.0g of N, N-methylene bisacrylamide, 0.8g of nano TiO2 and 4.3g of 2-hydroxyethylamine are mixed with the polyethylene glycol alcohol obtained in the step 1, and the mixture is subjected to ultrasonic dispersion for 1.5 hours to obtain a mixed solution;
and 3, step 3: under the protection of nitrogen at normal temperature, adding 0.15g of sodium persulfate into the mixed solution obtained in the step 2, and gradually dripping excessive 10% ammonia water;
and 4, step 4: the product of step 3 was washed by filtration.
Example 3 Loading of hydrophilic Nano titanium dioxide by porous mineral
And 5: roasting the porous filler for 2 hours at 650 ℃, and sieving after cooling;
step 6: adding 1.5g of filler, 0.5g of hydrophilic nano titanium dioxide, 1g of coupling agent and 20g of absolute ethyl alcohol (aluminate coupling agent is dissolved in absolute ethyl alcohol at first) into a three-neck flask, and magnetically stirring at normal temperature for reaction for 3 hours;
and 7: the crude product from step 6 was filtered, sieved, and dried at 90 ℃ for 5 hours to give the final product.
Example 4 Loading of hydrophilic Nano titanium dioxide by porous mineral
And 5: roasting the porous filler for 2 hours at 650 ℃, and sieving after cooling;
step 6: adding 2.0g of filler, 0.8g of hydrophilic nano titanium dioxide, 1g of coupling agent and 15g of absolute ethyl alcohol (aluminate coupling agent is dissolved in absolute ethyl alcohol firstly), adding into a three-neck flask, and reacting for 4 hours under magnetic stirring at normal temperature;
and 7: the crude product from step 6 was filtered, sieved, and dried at 110 ℃ for 4 hours to give the final product.
Four final products were obtained by using the hydrophilic nano-titania obtained in example 1 and example 2, respectively, and then by using the mounting schemes in example 3 and example 4, respectively, as shown in table 1:
TABLE 1 mounting scheme
| Example 3 | Example 4 | |
| Example 1 | Product 1 | Product 2 |
| Example 2 | Product 3 | Product 4 |
The four products were tested for photocatalytic performance and anion generation capacity, respectively, and the results are shown in table 2:
TABLE 2 test results
| Serial number | Categories | Photocatalytic degradation performance | Negative ion generating ability |
| 1 | Product 1 | 73.15％ | 454 pieces/cm 3 |
| 2 | Product 2 | 78.51％ | 477 pieces/cm 3 |
| 3 | Product 3 | 81.84％ | 543/cm 3 |
| 4 | Product 4 | 79.11％ | 498 pieces/cm 3 |
The test method of the photocatalytic degradation capability comprises the following steps: 1m 3 A petri dish containing 5ml of formaldehyde and a glass plate coated with 2g of composite material are placed in a bin (see VDA 276), and the initial concentration of formaldehyde gas in the bin is 1.5mg/m 3 The negative ion test was carried out according to the method of "evaluation and application research of air negative ion and negative ion materials" of the Chinese building materials institute.
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited thereto, and various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A method for preparing a filler having purification ability for VOC, comprising the steps of:
step (1): dissolving polyethylene glycol in ethanol, and magnetically stirring to form a homogeneous solution;
step (2): mixing N, N-methylene bisacrylamide and nano TiO 2 Mixing 2-hydroxyethylamine with the polyethylene glycol alcohol solution obtained in the step (1), and performing ultrasonic dispersion to obtain a mixed solution;
and (3): adding an initiator and ammonia water into the mixed solution obtained in the step (2) at normal temperature under the protection of nitrogen, and stirring to obtain a hydrophilic modified nano titanium dioxide crude product;
and (4): filtering the modified nano titanium dioxide crude product obtained in the step (3), and washing the filtered product to be neutral by using deionized water;
and (5): roasting the porous filler at high temperature, cooling to room temperature, and sieving to obtain the porous filler with uniform particle size distribution;
and (6): adding the porous filler and the modified nano titanium dioxide in the step (5) into absolute ethyl alcohol dissolved with a coupling agent, magnetically stirring, and filtering to obtain a crude product loaded with hydrophilic nano titanium dioxide;
and (7): and (4) filtering, drying, crushing and sieving the crude product obtained in the step (6) to obtain the filler loaded with the hydrophilic nano titanium dioxide.
2. The method for preparing a filler having VOC purification ability according to claim 1, wherein in the step (1), the molecular weight of polyethylene glycol is 200-1000, the hydroxyl value is 100-800, and the mass ratio of polyethylene glycol to ethanol is 1 (30-60); the concentration of the ethanol is more than or equal to 50 percent, the medium is water, and the stirring time is 1 to 2 hours.
3. The method for producing a filler having purification ability for VOC according to claim 1, wherein in the step (2), N, N-methylenebisacrylamide and nano TiO are used 2 The mass ratio of the 2-hydroxyethylamine to the polyethylene glycol is (0.8-3.3): (0.4-0.8): (3.3-5.2): 1, nano-TIO 2 The grain diameter is 10 nm-0.85 μm, and the ultrasonic dispersion time is 2-3 hours.
4. The method of producing a filler having VOC purifying ability according to claim 1, wherein in the step (3), the initiator is one or more of potassium persulfate, sodium persulfate and ammonium persulfate, and the mass ratio of the initiator to the polyethylene glycol is (0.04 to 0.20): 1, the concentration of ammonia water is 10-20%, and the mass ratio of ammonia water to polyethylene glycol is (0.1-1.0): 1, stirring for 6-8 hours.
5. The method for preparing a filler having VOC purification ability according to claim 1, wherein in the step (5), the porous material is selected from one or more of opal, parities and seaweed char, and the firing conditions at high temperature are as follows: roasting at 600-650 deg.c for 0.5-2 hr.
6. The method of producing a filler having VOC purifying ability according to claim 1, wherein in the step (6), the mass ratio of the porous filler, the hydrophilic nano-titania, the anhydrous ethanol and the coupling agent is (1.5 to 2.8): (0.5-1.0): (10-30): 1, the coupling agent is a silane coupling agent, an aluminate coupling agent or a titanate coupling agent.
7. The method for producing a filler having VOC purifying ability according to claim 1, wherein in the step (6), the reaction time is 3 to 6 hours with magnetic stirring.
8. The method for producing a filler having VOC purifying ability according to claim 1, wherein in the step (7), the drying temperature is 80 to 110 ℃ and the drying time is 3 to 8 hours.
9. A filler having VOC purification ability, characterized in that it is produced by the production method according to any one of claims 1 to 8.
10. Use of a filler prepared according to the preparation process of any one of claims 1 to 8 in the manufacture of a motor vehicle.
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