CN103977755B - A kind of high catalytic oxidation activity material for air purification - Google Patents
A kind of high catalytic oxidation activity material for air purification Download PDFInfo
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Abstract
The invention discloses a kind of high catalytic oxidation activity material for air purification, its preparation method is: 1) by the TiO of preparation of sol-gel2Gel adds the α-MnO of Hydrothermal Synthesis2In nanometer rods solution, both mass ratioes are 1:(1.0～1.4), mixed liquor is filtered, obtain filter cake A; 2) by KIO3Be dissolved in 100 DEG C of water, making mass fraction is 15%～23% potassium iodate solution, and mixes with titanate coupling agent or the coupling agent modified nano-ZnO of esters of silicon acis, and both mass ratioes are 1:(15～25), make photocatalyst activity agent B; 3) by step 1) filter cake A, the photocatalyst activity agent B, tourmaline powder and binding agent 1:(0.15～0.30 in mass ratio that make): (0.20～0.25): mix (0.25～0.30), stir and granulation balling-up or extruding slivering, drying makes. This material air detergent power is strong, application is convenient.
Description
Technical field
The present invention relates to a kind of filtering material, be specifically related to a kind of air filting material.
Background technology
In recent years, air pollution problems inherent is national governments' problem demanding prompt solution always, the sulfide, the oxygen that in air, exceed standardChanging carbon (CO) and nitrogen oxide etc. is the pernicious gas that affects human health; The industry combustions such as the energy, chemical industry, metallurgy, trafficIn the flue gas discharging with fossil fuel (coal, oil, natural gas etc.), contain a large amount of SO2 and NOx, atmosphere is causedSevere contamination. In addition the various dust that mankind's activity produces, the solid suspended particles pair such as the sand and dust that climatic deterioration causes in addition,The pollution of surrounding air, and from all kinds of ornament materials and mouthful with the volatile organic pollution of chemicals more and moreEnter house and public building, causing human settlement to pollute sharply increases.
Investigation demonstration, the new clothes room of China 90% and 95% new clothes office space exist VOCs gas pollutant to exceed standardPhenomenon. Because most mankind's activities are carried out indoor, so indoor environmental pollution is made health of people and quality of the peopleThe harm becoming is very serious. A statistics demonstration of the World Health Organization, the disease burden that indoor environmental pollution causes exceedesOutdoor same level is polluted and is made cumbrous 6 times. Last century the nineties, what China was caused by indoor environmental pollution every year exceeds the quataDeath toll reaches 110,000 people, and the outpatient service number that exceeds the quata reaches 130,000 person-times, and the emergency treatment number that exceeds the quata reaches 1,500,000 person-times, the warp therefore causingJi loss more than $ 10 billion.
For adapting to the requirement of people to air quality, various types of air purifiers on market, are there are, current domestic granddadThe air purification method of recognizing is mainly to utilize absorption method and electrostatic method to remove pollutant, the large portion of air purifier that oneself hasDivide and adopt filtering material to remove airborne suspended particulate, adopt the porous materials such as active carbon to carry out the harmful gas in absorbed airBody, and produce a certain amount of anion with anion generator. But the adsorption capacity of sorbing material active carbon is all limited,After absorption reaches capacity, just there will be pollutant penetration phenomenon. And to indoor major pollutants formaldehyde, acetaldehyde, benzene,The removing effect of VOCs, nitrogen oxide is not very desirable. At this moment, sorbing material is not only lost the characterization of adsorption to pollutant,The noxious pollutant adsorbing can cause secondary pollution on the contrary, becomes new pollution sources; When adsorbed pollutant is volatilityWhen organic matter.
At present both at home and abroad oneself begins one's study and utilizes nano photo-catalytic technology to purify the air of a room. By nano photo-catalytic and adsorbent knotClose, utilize the absorption property of adsorbent and nano-photocatalyst pernicious gas can be decomposed at normal temperatures to innocuous gasCharacteristic purifies the air of a room. As: prepare scavenging material etc. with the carrier of active carbon or NACF photocatalyst. But byIn only competence exertion effect under the irradiation at ultraviolet light of this class photocatalysis, therefore adopt the material of making in this way currentPracticality is not strong, and indoor environment is difficult to meet ultraviolet lighting bar and uses, and cost is higher.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high catalytic oxidation activity material for air purification is provided.
For achieving the above object, the present invention is by the following technical solutions:
A kind of high catalytic oxidation activity material for air purification, it is made up of following preparation method, and concrete preparation method's step is:
1) the TiO2 gel of preparation of sol-gel is added in α-MnO2 nanometer rods solution of Hydrothermal Synthesis, in mixed liquorTiO2 gel is 1:(1.0～1.4 with α-MnO2 nanometer rods solution quality ratio), mixed liquor is filtered, obtain moisture content50%～70% filter cake A;
2) KIO3 is dissolved in 100 DEG C of water, making mass fraction is 15%～23% potassium iodate solution, and even with titanate estersThe coupling agent modified nano-ZnO of connection agent or esters of silicon acis mixes, and KIO3 and ZnO mass ratio are 1:(15～25), make light and touchMatchmaker's activating agent B;
3) by step 1) filter cake A, the photocatalyst activity agent B, tourmaline powder and the binding agent that make are in mass ratio1:(0.15～0.30): (0.20～0.25): mix (0.25～0.30), stirs and granulation balling-up or extruding slivering, through 100 DEG C～150 DEG C of oven dry, make described material for air purification.
Preferably, described tourmaline is one or more in dravite, iron tourmaline, iron dravite, clang tourmaline.
Preferably, described modified nano-ZnO particle diameter is 20nm～50nm.
Preferably, described binding agent is one or more in active γ-Al2O3, zeolite powder, active recessed soil, kaolin.
Wherein, the method that described collosol and gel is prepared TiO2 has multiple, preferably: first by butyl titanate and absolute ethyl alcoholMixing is 1:(4.0～4.5 by volume) mix, stir and form solution A; Getting volume ratio is 1:(1.0～1.5 again): (0.1～0.5) fromSub-water, absolute ethyl alcohol and glacial acetic acid mix, and keep pH value 3-4, form solution B; Then, under 40 DEG C of water bath conditionBy solution A dropwise (speed is at 3mL/min) add in prepared solution B, utilize constant temperature blender with magnetic force to enter simultaneouslyRow rapid stirring, makes its butyl titanate hydrolysis. Continuous stirring approximately after 2～3.5h, can be made into the transparent TiO2 of white after filtrationGel.
Wherein, α-MnO2 nanometer rods preparation method has multiple, preferably: be 1:(1～1.5 by mass ratio respectively): (6.0～6.5)Potassium permanganate (KMnO4), manganese acetate (Mn (CH3COO) 24H2O) and distilled water mix and blend, mixed moltenLiquid proceeds to in teflon-lined reactor, then adds distilled water to be adjusted to inner liner of reaction kettle volume60%-70%, sealing, and be positioned in vacuum drying chamber, from room temperature heating, through isothermal reaction, naturally cool to room temperature,Can make α-MnO2 nanometer rods;
Reaction principle is:
2KMnO4+3Mn(CH3COO)2→5MnO2+CH3COOH+2CH3COOK+4H2O
This reaction is made up of two half-reactions:
Mn2++2H2O→MnO2+4H++2e(E＝1.23V)
MnO4+4H++3e→MnO2+2H2O(E＝1.695V)
Beneficial effect of the present invention is, high catalytic oxidation activity material for air purification of the present invention not only utilizes physical absorptionPernicious gas is adsorbed to material surface by performance, can also make to form chemisorbed between pernicious gas and material, and logical oxideThe efficient catalysed oxidn of mistake, pernicious gas is degraded. This material air detergent power is strong, effect is stable, capable of circulation makingWith, without illumination, without heating, applied widely, application is convenient.
Detailed description of the invention
Below in conjunction with specific embodiment, the specific embodiment of the present invention is described further, but the present invention is not limited inFollowing embodiment.
Embodiment 1
Butyl titanate and absolute ethyl alcohol are evenly mixed and made into A liquid for 1:4.4 by volume, then by deionized water, anhydrousEthanol and glacial acetic acid be by volume for 1:1.3:0.24 is uniformly mixed into mixed liquid B, under 40 DEG C of water bath condition by solution A byDrip (speed is at 3mL/min) and add in prepared solution B, in mixed liquor, A liquid and B liquid volume ratio are 2.4:1. WithShi Liyong constant temperature blender with magnetic force is carried out rapid stirring, makes its butyl titanate hydrolysis. After the about 3h of continuous stirring, system after filteringBecome the transparent TiO2 gel of white.
By potassium permanganate, manganese acetate and water in mass ratio 1:1.4:6.5 uniformly mix, by its mixed solution proceed toIn teflon-lined reactor, then add distilled water to be adjusted to 65% of inner liner of reaction kettle volume, sealing, and putBe placed in vacuum drying chamber, be heated to temperature requiredly from room temperature, isothermal reaction certain hour, naturally cools to room temperature, makesα-MnO2 nanometer rods.
By 1) make gel, 2) make α-MnO2 nanometer rods in mass ratio 1:1.5 evenly mix, must contain through filter pressingWater rate is 60% filter cake.
By 3) make filter cake, KIO3, the coupling agent modified nano-ZnO of esters of silicon acis, iron tourmaline powder, kaolin powder by matterAmount, than the even mixing of 1:0.02:0.20:0.24:0.30, becomes Φ 2.0mm spherical particles by granulator granulation, and at 120 DEG C of barsPart is dried and is made described material for air purification. Its efficiency that purifies air is as table one.
Embodiment 2
Butyl titanate and absolute ethyl alcohol are evenly mixed and made into A liquid for 1:4.2 by volume, then by deionized water, anhydrousEthanol and glacial acetic acid be by volume for 1:1.2:0.22 is uniformly mixed into mixed liquid B, under 40 DEG C of water bath condition by solution A byDrip (speed is at 3mL/min) and add in prepared solution B, in mixed liquor, A liquid and B liquid volume ratio are 2.5:1. WithShi Liyong constant temperature blender with magnetic force is carried out rapid stirring, makes its butyl titanate hydrolysis. After the about 2h of continuous stirring, system after filteringBecome the transparent TiO2 gel of white.
By potassium permanganate, manganese acetate and water in mass ratio 1:1.5:6.3 uniformly mix, by its mixed solution proceed toIn teflon-lined reactor, then add distilled water to be adjusted to 70% of inner liner of reaction kettle volume, sealing, and putBe placed in vacuum drying chamber, be heated to temperature requiredly from room temperature, isothermal reaction certain hour, naturally cools to room temperature, makesα-MnO2 nanometer rods.
By 1) make gel, 2) make α-MnO2 nanometer rods in mass ratio 1:1.4 evenly mix, must contain through filter pressingWater rate is 60% filter cake.
By 3) make filter cake, KIO3, the coupling agent modified nano-ZnO of esters of silicon acis, dravite powder, zeolite powder by qualityThan the even mixing of 1:0.03:0.19:0.23:0.35, by banded extruder be a granulated into Φ 3.0mm, length is 5.0mm cylindrical particle,And dry and make described material for air purification 130 DEG C of conditions. Its efficiency that purifies air is as table one.
Embodiment 3
Butyl titanate and absolute ethyl alcohol are evenly mixed and made into A liquid for 1:4.0 by volume, then by deionized water, anhydrousEthanol and glacial acetic acid be by volume for 1:1:0.20 is uniformly mixed into mixed liquid B, under 40 DEG C of water bath condition by solution A byDrip (speed is at 3mL/min) and add in prepared solution B, in mixed liquor, A liquid and B liquid volume ratio are 2.3:1. WithShi Liyong constant temperature blender with magnetic force is carried out rapid stirring, makes its butyl titanate hydrolysis. After the about 3h of continuous stirring, system after filteringBecome the transparent TiO2 gel of white.
By potassium permanganate, manganese acetate and water in mass ratio 1:1.5:6 uniformly mix, its mixed solution is proceeded to poly-In the reactor of tetrafluoroethene liner, then add distilled water to be adjusted to 60% of inner liner of reaction kettle volume, sealing, and placeIn vacuum drying chamber, be heated to temperature requiredly from room temperature, isothermal reaction certain hour, naturally cools to room temperature, makesα-MnO2 nanometer rods.
By 1) make gel, 2) make α-MnO2 nanometer rods in mass ratio 1:1 evenly mix, obtain moisture through filter pressingRate is 50% filter cake.
By 3) make filter cake, KIO3, titanate coupling agent modified nano-ZnO, iron dravite powder, active recessed soil byMass ratio 1:0.01:0.15:0.2:0.3 evenly mixes, and becomes Φ 2.0mm spherical particles by granulator granulation, and at 110 DEG C of barsPart is dried and is made described material for air purification. Its efficiency that purifies air is as table one.
Embodiment 4
Butyl titanate and absolute ethyl alcohol are evenly mixed and made into A liquid for 1:4.1 by volume, then by deionized water, anhydrousEthanol and glacial acetic acid be by volume for 1:1.1:0.21 is uniformly mixed into mixed liquid B, under 40 DEG C of water bath condition by solution A byDrip (speed is at 3mL/min) and add in prepared solution B, in mixed liquor, A liquid and B liquid volume ratio are 2.4:1. WithShi Liyong constant temperature blender with magnetic force is carried out rapid stirring, makes its butyl titanate hydrolysis. After the about 2h of continuous stirring, system after filteringBecome the transparent TiO2 gel of white.
By potassium permanganate, manganese acetate and water in mass ratio 1:1.4:5 uniformly mix, its mixed solution is proceeded to poly-In the reactor of tetrafluoroethene liner, then add distilled water to be adjusted to 65% of inner liner of reaction kettle volume, sealing, and placeIn vacuum drying chamber, be heated to temperature requiredly from room temperature, isothermal reaction certain hour, naturally cools to room temperature, makesα-MnO2 nanometer rods.
By 1) make gel, 2) make α-MnO2 nanometer rods in mass ratio 1:1.2 evenly mix, must contain through filter pressingWater rate is 55% filter cake.
By 3) make filter cake, KIO3, titanate coupling agent modified nano-ZnO, clang tourmaline, active γ-Al2O3 byMass ratio 1:0.02:0.17:0.22:0.34 evenly mixes, and becomes Φ 2.5mm spherical particles by granulator granulation, and at 120 DEG CCondition is dried and is made described material for air purification. Its efficiency that purifies air is as table one.
The filtering material making in above-described embodiment 1～4 is carried out to performance test, and test is according to " GB/T18801-2008 skyGas purifier " described experimental situation:
Test instrument equipment: ceiling fan, Hygrothermograph, the Rec domestic air of 30m3 standard testing laboratory, U.S. are cleanChange the formaldehyde of device KJ701-3 air cleaner, American I nterscan company and analyze Interscan4160-19.99m.
Purification efficiency: sample is poured out and stirred, claim 220 grams to pack in the plastic cement honeycomb that oneself gets ready, ensure sealWell, then pack in clearing machine, cover whole clearing machine with polybag; Finally in 30m3 test laboratory, inject oneQuantitative detection solution, after heating and within 3 minutes, making it to volatilize completely, closes heater, opens to stir blower fan and stir 5min simultaneously,Its initial concentration is surveyed in sampling, removes the polybag on clearing machine, opens purification fan and starts timing, records after 60 minutesGas purification situation.
Its test result is as shown in table 1:
Table 1 test result
Claims (4)
1. a high catalytic oxidation activity material for air purification, is characterized in that: its preparation method is made up of following steps:
1) by the TiO of preparation of sol-gel2Gel adds the α-MnO of Hydrothermal Synthesis2In nanometer rods solution, in mixed liquorTiO2Gel and α-MnO2Nanometer rods solution quality is than being 1:(1.0～1.4), mixed liquor is filtered, obtain moisture content50%～70% filter cake A;
2) by KIO3Be dissolved in 100 DEG C of water, making mass fraction is 15%～23% potassium iodate solution, and even with titanate estersThe coupling agent modified nano-ZnO of connection agent or esters of silicon acis mixes, KIO3With ZnO mass ratio be 1:(15～25), make light touchMatchmaker's activating agent B;
3) by step 1) filter cake A, the photocatalyst activity agent B, tourmaline powder and the binding agent that make are in mass ratio1:(0.15～0.30): (0.20～0.25): mix (0.25～0.30), stirs and granulation balling-up or extruding slivering, through 100 DEG C～150 DEG C of oven dry, make described material for air purification.
2. material for air purification according to claim 1, its characteristic is: described tourmaline powder be dravite powder,One or more in iron tourmaline powder, iron dravite powder, clang tourmaline powder.
3. material for air purification according to claim 1, its characteristic is: described modified nano-ZnO particle diameter is20nm～50nm。
4. material for air purification according to claim 1, its characteristic is: described binding agent is active γ-Al2O3、One or more in zeolite powder, active recessed soil, kaolin.
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| CN105148836A (en) * | 2015-07-08 | 2015-12-16 | 深圳市中纺滤材无纺布有限公司 | Catalytic decomposition type air purification material and preparation method thereof |
| CN106824121A (en) * | 2015-12-07 | 2017-06-13 | 山东佳星环保科技有限公司 | A kind of preparation method of ceramic-metal compound air purification material |
| CN106091343B (en) * | 2016-05-28 | 2021-12-10 | 赣州安宏环保科技有限公司 | Laminated disc-mounted nano colloidal gel air purifier |
| CN108906029A (en) * | 2018-06-27 | 2018-11-30 | 宁波智通环保科技有限公司 | A kind of catalyst of transition metal oxide and its forming method |
| CN109353298A (en) * | 2018-10-04 | 2019-02-19 | 南京航空航天大学溧水仿生产业研究院有限公司 | It is a kind of for transporting the robot ambulation structure of patient |
| CN109317111B (en) * | 2018-11-05 | 2021-12-17 | 浙江海洋大学 | Preparation method of floatable foaming adsorbent loaded with nano photocatalyst |
| CN113181895A (en) * | 2021-04-29 | 2021-07-30 | 陕西科技大学 | Silicon-based composite material with photocatalysis aldehyde removal function and preparation method thereof |
| CN114159888A (en) * | 2021-11-19 | 2022-03-11 | 安徽元琛环保科技股份有限公司 | Manufacturing method of anti-static filter material and anti-static filter material |
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| CN102686311A (en) * | 2009-12-30 | 2012-09-19 | 希腊/福斯研究与技术基金会 | Method of production of photocatalytic powder comprising titanium dioxide and manganese dioxide active under ultraviolet and visible light |
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| Title |
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| 氧化锰对TiO2和ZnO光催化活性的影响及机理;李顺军;《中国硕士学位全文数据库》;20081231;全文 * |
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