CN100467101C - Nanometer photocatalytic air purifying spraying technology - Google Patents

Nanometer photocatalytic air purifying spraying technology Download PDF

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Publication number
CN100467101C
CN100467101C CNB2007100172794A CN200710017279A CN100467101C CN 100467101 C CN100467101 C CN 100467101C CN B2007100172794 A CNB2007100172794 A CN B2007100172794A CN 200710017279 A CN200710017279 A CN 200710017279A CN 100467101 C CN100467101 C CN 100467101C
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Prior art keywords
nano
nanometer
deionized water
air purifying
powder
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Expired - Fee Related
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CNB2007100172794A
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Chinese (zh)
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CN101053767A (en
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郭水虎
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Shaanxi Taihe Science &technology Co Ltd
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Shaanxi Taihe Science &technology Co Ltd
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Abstract

The invention relates to nano-photocatalysis air rectification spray technology. At present, the environment in the car and room commonly has serious problems that is the longterm existence of the harmful gas such as formaldehyde, benzene, toluene, xylene and so on, harmful to the health of human. The purpose of the invention is to develop a nano-catalysis air rectification spray technology. The technical proposal of the invention is to: quantificationally withdraw deionized water, fill into the reaction kettle to react, put in triethanolamine and sodium metaphosphate at the same time, mix round and melt, raise the stirring rate of the reaction kettle to the maximum, add nano-powder, keeping stir for 3-5 hours to get the white suspended etching solution. The use is to contact the nano-zinc oxide with the air under natural light to produce much of anion like supperoxide anion and hydroxyl free radical, which can rapidly and fully degrade the harmful gas like formaldehyde, raise the air quality indoor rapidly, and raise the security indoor and the human health all the better.

Description

A kind of preparation method of nanometer photocatalytic air purifying spraying agent
One, technical field
The present invention relates to a kind of preparation method of nanometer photocatalytic air purifying spraying agent, utilize nano zine oxide under natural daylight, contact with air, produce anions such as a large amount of superoxide anions and hydroxyl radical free radical immediately, be mainly used in the raising IAQ, safety, health.
Two, background technology
At present in real life, indoor environment ubiquity serious problems, all might there be pernicious gases such as formaldehyde, benzene,toluene,xylene in the sheet material of automobile, indoor various decorations, furniture etc., and long-term existence, can cause multiple disease, totally unfavorable to health.In order to purify air; improve people's quality of life and health; in State Intellectual Property Office's patent disclosure; on May 28th, 2003, open application number was 01134887.9; name is called a kind of patent application of air purifier; publication number is CN1420317; its technology is to comprise off-premises station; cooling medium indoor set; oxygen generator; the refrigerant pipe; this oxygen generator is by the oxygen generator that is located at described off-premises station optional position; be located at the oxygen escaper of indoor set; the oxygen conveying pipe that connects oxygen generator and oxygen escaper is formed; this oxygen generator is made up of the shell of oxygenous Machinery Ministry and protection Machinery Ministry; this Machinery Ministry is again by air pump; be connected side by side with air pump; can select to connect first of air duct; second transfer valve; with first; second transfer valve is connected, and inside is provided with the adsorption tower of absorption nitrogen adsorption agent; be located at the detection valve on the described oxygen conveying pipe; first; second carrier pipe and first; second air delivery pipe is formed.
Through also there not being the product of this class of photocatalytic air purifying spraying on the investigation market.
Three, summary of the invention
The objective of the invention is to develop a kind of preparation method of nanometer photocatalytic air purifying spraying agent, utilize exactly under natural daylight, nano zine oxide contacts with air, just can produce anions such as a large amount of superoxide anions and hydroxyl radical free radical immediately, pernicious gases such as quick comprehensive degradation of formaldehyde, improve IAQ rapidly, better improve indoor security and people's the general level of the health.
Technical solution of the present invention is: a kind of preparation method of nanometer photocatalytic air purifying spraying agent, it is characterized in that: at normal temperatures and pressures, at first make the deionization water storage for preparing in advance pass through measuring tank, deionized water 2000L is extracted in metering, inject reaction kettle for reaction, evenly stir, add simultaneously 15-25L triethanolamine and 0.35-0.55kg sodium metaphosphate lentamente, slowly evenly stirred 30-50 minutes, treat to dissolve fully with deionized water fully molten and after, the rotating speed of heightening the reactor mixer again is to maximum, rotating speed is-240 rev/mins of 120 commentaries on classics, slowly add nano-powder 1.5-2.5kg, triethanolamine, these media of sodium metaphosphate and nano-powder under the high-speed stirred, kept 3-5 hours in reactor, so far final product is a white for outstanding erosion liquor, to be measured to be checked after, again with being pumped into can packing machine, carrying out jar liquid packing warehouse-in and treat pin.
Technical solution of the present invention also comprises:
The preparation method of described a kind of nanometer photocatalytic air purifying spraying agent is characterized in that: nano-powder is meant nano zine oxide ZnO, nano-titanium oxide TiO 2, Nano cadmium sulphide CdS, nanometer tungsten oxide WO 3, nanometer di-iron trioxide Fe 2O 3, nanometer lead sulfate PbS, nano tin dioxide SnO 2, nano-zinc sulfide ZnS, nano strontium titanate SrTiO 3Perhaps nano silicon oxide SiO 2
The preparation method of described a kind of nanometer photocatalytic air purifying spraying agent is characterized in that: the sodium metaphosphate carrier can also be replaced with polyethylene butyl ether or lauryl amine.
The preparation method of described a kind of nanometer photocatalytic air purifying spraying agent is characterized in that:
Deionized water is meant uses reverse osmosis water treating equipment, adds the mixed bed of yin and yang resin and prepares deionized water, and technical indicator reaches National Laboratory's water first class index, is specially:
A, 25 ℃ of following pH value scopes for not having, b, 25 ℃ of following electrical conductivity us/cm≤0.1;
The limiting test of c, oxidable thing does not have, and d, absorbance are 254nm, 1cm light path≤0.001;
E, silica mg/L≤0.02.
Effect and advantage:
1, the present invention is the photocatalytic air purifying spraying technology with broad spectrum response.Photocatalysis is one of Nano semiconductor particular performances.Under light radiation, photon---electronics---chemical process that luminous energy is transformed into chemical energy takes place in nano semiconductor material ZnO, impels organic synthesizing, or makes the reaction of organic matter degradation.
Whole operation principle is: when semiconductor light-catalyst equals to absorb threshold value λ g at lambda1-wavelength, absorb the energy of incident light, electron transition on the semiconductor valence band is gone to the conduction band and produce the hole on valence band.Promptly excite down at incident light, it is right that semiconductor produces electronics one hole.Because the particle of the Nano semiconductor ZnO powder that we adopt has only 50nm, and is small-sized, its inner electronics one hole that produces is to moving to particle surface very soon.These move to the electronics and the hole of particle surface, and oxidation and reduction reaction take place.
Surface hydroxyl free radical OH is the main oxidant of organic light-catalyzed reaction, catalytic oxidation is played a decisive role, therefore, the reduction reaction of electronics and oxygen not only helps to stablize hole and hydroxide ion, water or organic matter reaction, and generates the carrying out that the surface hydroxyl free radical has promoted photocatalysis oxidation reaction.In oxidizing process, the hole not only takes place strong oxidation, and light induced electron is also participated in reaction directly.In the process of the harmful organic substance in photocatalytic oxidation air (alkane, alcohol, ketone, aldehyde, acid etc.), light induced electron is by forming superoxide anion with the molecular oxygen reaction.Organic matter by hole or hydroxyl oxidize after, form organic peroxy with molecular oxygen reaction again, superoxide anion and organic peroxy radical reaction generate unsettled organic four oxygen bases, in many cases, finally resolve into CO 2And H 2O.By above-mentioned reaction path, there is more oxygen molecule to participate in reaction, generate the tetroxide of degraded easily.This has not only accelerated light-catalyzed reaction speed, and has reduced the step of light degradation reaction generation intermediate, has improved photocatalysis efficiency.The nanometer photocatalytic air purifying agent is to utilize the photocatalytic effect of nano zine oxide and cover characteristic ultraviolet preferably, its screening rate reaches more than 98% approximately, have antibacterial and bacteriostasis simultaneously, dispelling abnormal flavor and corrosion-resistant effect make air quality reach country-level standard.
2, product of the present invention mainly uses the space that exceeds standard at organic pollutions such as formaldehyde, as room, office, meeting room, workshop, hospital, toilet, vehicle, steamer and various public places etc., concrete operations are to implement spraying, can reach the purpose that purifies air.Spray amount is about 25 milliliters every square metre, and spraying drop point adularescent vestige (available temperature towel is wiped) as playing the nano zine oxide of photocatalysis, can be sprayed on furniture inner surface and the white metope.
3, the technical indicator of nanometer photocatalytic air purifying agent:
Project: index
Outward appearance: milky suspension
Smell: free from extraneous odour
Density: 0.9-1.2g/ml
Visible light-responded spectrum: 500-800nm
The visible light utilization rate: 420nm is not less than 50%
Formaldehyde elimination factor: per hour be not less than 30%
Four, the specific embodiment
The method of semi-conducting material nano-powder with mechanical spraying loaded on the stronger carrier of adsorption capacity, or the stronger carrier of nano-powder and adsorption capacity is mixed.Nano-powder is meant nano zine oxide ZnO, nano-titanium oxide TiO 2, Nano cadmium sulphide CdS, nanometer tungsten oxide WO 3, nanometer di-iron trioxide Fe 2O 3, nanometer lead sulfate PbS, nano tin dioxide SnO 2, nano-zinc sulfide ZnS, nano strontium titanate SrTiO 3Perhaps nano silicon oxide SiO 2Deng.Carrier is the carrier that triethanolamine and sodium metaphosphate are formed, and wherein sodium metaphosphate can also be replaced (triethanolamine is not replaceable) with polyethylene butyl ether or lauryl amine.Following nano-powder is that example is divided 11 group profiles with nano zine oxide ZnO, carrier with triethanolamine and sodium metaphosphate:
At normal temperatures and pressures, the at first before deionization water storage for preparing passes through measuring tank, every part of 2000L of deionized water totally ten portions are extracted in metering, inject different reaction kettle for reaction, evenly stir respectively, add 15 lentamente respectively simultaneously, 16,17,18,19,20,21,22,23,24,25L triethanolamine and 0.35,0.40,0.42,0.45,0.48,0.49,0.50,0.52,0.53,0.54,0.55kg sodium metaphosphate, slowly even stir about 30-50 minutes, treat to dissolve fully with deionized water fully molten and after, the rotating speed of heightening the reactor mixer again is to maximum, rotating speed is-240 rev/mins of 120 commentaries on classics, slowly add nano-powder zinc oxide ZnO ten portions 1.5 more respectively, 1.6,1.7,1.8,1.9,2.0,2.1,2.2,2.3,2.4,2.5kg, triethanolamine, these media of sodium metaphosphate and nano-powder are in reactor under the high-speed stirred, kept 3-5 hours, so far final product is a white for outstanding erosion liquor, to be measured to be checked after, again with being pumped into can packing machine, carry out a jar liquid packing, per 200 milliliters is one bottle, 24 bottles is a case, treats pin through putting in storage after the assay was approved.
The deionization water storage is the deionized water that oneself prepares of usefulness, deionized water is meant uses reverse osmosis water treating equipment, add the mixed bed of yin and yang resin and prepare deionized water, technical indicator reaches National Laboratory's water first class index, is specially: a, 25 ℃ of following pH value scopes for not having, b, 25 ℃ of following electrical conductivity us/cm≤0.1, the limiting test of c, oxidable thing does not have, d, absorbance are 254nm, 1cm light path≤0.001, e, silica mg/L≤0.02.In above-mentioned technology, pass through measuring tank, 2000 liters of deionized waters (L) are extracted in metering, inject reactor, react at normal temperatures, do not need extraneous heating or cooling, under normal temperature, evenly stir, add lentamente simultaneously 15-25 liters of (L) triethanolamines (the present usefulness of triethanolamine be analytically pure, content is not less than 98%, need not dilute.) and 0.35-0.55 kilogram of (kg) sodium metaphosphate (laboratory is the chemical pure sodium phosphate of usefulness at present, content is not less than 97%), slowly even stir about 30-50 minutes, treat this dissolve fully with deionized water fully molten and, and then the rotating speed of heightening mixer arrives maximum, rotating speed is-180 rev/mins of 120 commentaries on classics, slowly add nano zine oxide 1.5-2.5kg, under high-speed stirred, kept 3-5 hours, so far, (final product ZnO solution is white to product, outstanding uniformly erosion liquid, but after placing a period of time, tangible layering takes place, need this moment extraneous shaking or stir to make it become white again, uniformly outstanding erosion liquid) prepared and finished to be measured to be checkedly,, carried out jar liquid and pack then with being pumped into can packing machine.Composition: the Main Ingredients and Appearance nano zine oxide, tasteless, nontoxic, zinc is micro elements needed by human.
Use: implement spraying in the space (room, office, meeting room, workshop, hospital, toilet, vehicle, steamer and various public places etc.) that organic pollutions such as formaldehyde exceed standard, can reach the purpose that purifies air.Spray amount is about 25 milliliters every square metre, and spraying drop point adularescent vestige plays the nano zine oxide of photocatalysis exactly, can be sprayed on furniture inner surface and the white metope.

Claims (3)

1, a kind of preparation method of nanometer photocatalytic air purifying spraying agent, it is characterized in that: at normal temperatures and pressures, at first make the deionization water storage for preparing in advance pass through measuring tank, deionized water 2000L is extracted in metering, inject reaction kettle for reaction, evenly stir, add simultaneously 15-25L triethanolamine and 0.35-0.55kg sodium metaphosphate lentamente, slowly evenly stirred 30-50 minutes, treat to dissolve fully with deionized water fully molten and after, the rotating speed of heightening the reactor mixer again is to maximum, rotating speed is 120 to change-240 rev/mins, slowly add nano-powder 1.5-2.5kg, described nano-powder is nano zine oxide ZnO, nano-titanium oxide TiO 2, Nano cadmium sulphide CdS, nanometer tungsten oxide WO 3, nanometer di-iron trioxide Fe 2O 3, nanometer lead sulfate PbS, nano tin dioxide SnO 2, nano-zinc sulfide ZnS, nano strontium titanate SrTiO 3Perhaps nano silicon oxide SiO 2, these media of triethanolamine, sodium metaphosphate and nano-powder under the high-speed stirred, kept 3-5 hours in reactor, so far final product be a white for outstanding erosion liquor, to be measured to be checked after, again with being pumped into can packing machine, carrying out jar liquid and pack to put in storage and treat pin.
2, the preparation method of a kind of nanometer photocatalytic air purifying spraying agent according to claim 1 is characterized in that: the sodium metaphosphate carrier can also be replaced with polyethylene butyl ether or lauryl amine.
3, the preparation method of a kind of nanometer photocatalytic air purifying spraying agent according to claim 1 is characterized in that:
Deionized water is meant uses reverse osmosis water treating equipment, adds yin and yang resin and mixes the deionized water that bed prepares, and technical indicator reaches National Laboratory's water first class index, is specially:
A, 25 ℃ of following pH value scopes for not having, b, 25 ℃ of following electrical conductivity us/cm≤0.1;
The limiting test of c, oxidable thing does not have, and d, absorbance are 254nm, 1cm light path≤0.001;
E, silica mg/L≤0.02.
CNB2007100172794A 2007-01-24 2007-01-24 Nanometer photocatalytic air purifying spraying technology Expired - Fee Related CN100467101C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834223B (en) * 2014-03-12 2015-08-26 洛阳卓舜商贸有限公司 A kind of environmental protection coating material capable of purifying air and compound method thereof
CN104069727A (en) * 2014-06-21 2014-10-01 北京化工大学 Liquid-phase photocatalytic indoor air purifier
CN106215662B (en) * 2016-08-31 2018-10-23 张建立 A kind of application method of automobile-used formaldehyde remover
CN107081159A (en) * 2017-04-25 2017-08-22 安徽博硕科技有限公司 A kind of preparation method of rare earth modified attapulgite loaded strontium titanates/tin oxide/zinc sulphide composite nano materials
CN111457534A (en) * 2018-11-16 2020-07-28 杭州曼京科技有限公司 Ventilation device for building factory building
CN110193283A (en) * 2019-05-15 2019-09-03 上海杉盛空气净化技术有限公司 A kind of full spectrum light catalytic air purification liquid and preparation method thereof
CN111895539A (en) * 2020-08-06 2020-11-06 武汉盛世永昌科技股份有限公司 High-efficient indoor air purification system

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