CN107376640A - One kind purification particle and preparation method thereof - Google Patents
One kind purification particle and preparation method thereof Download PDFInfo
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- CN107376640A CN107376640A CN201710858567.6A CN201710858567A CN107376640A CN 107376640 A CN107376640 A CN 107376640A CN 201710858567 A CN201710858567 A CN 201710858567A CN 107376640 A CN107376640 A CN 107376640A
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- 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
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- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
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- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B01D2255/20—Metals or compounds thereof
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- B01D2255/20776—Tungsten
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- B01D2255/20792—Zinc
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- B01D—SEPARATION
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- B01D2255/80—Type of catalytic reaction
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention discloses one kind to purify particle, and the purification particle includes：Carrier and load have the adherent coatings of degradation function to pollutant on the carrier；The purification particle has micropore structure；The purification particle not only increases the contact area of solid and pollutant using micropore structure, make purification particle stronger to the adsorption capacity of pollutant, pollutant can also be made to reside in micropore structure, prevent its spilling, increase concentration of the pollutant in micropore structure, make adherent coatings to the degradation speed of pollutant faster, purification is more thorough, so as to improve the purification efficiency of purification particle.
Description
Technical field
The present invention relates to environment-friendly materials field, more particularly to scavenging material field, and in particular to one kind purification particle and its
Preparation method.
Background technology
At present, the purification to pollutant is broadly divided into physical cleaning and the major class of chemical cleaning method two according to cleaning principle.Thing
Reason purification refers to the method for pollutant removal by modes such as physical absorption, precipitations, although having the advantages of quick and easy,
But equally there is also secondary pollution, the halfway defect of purification；Chemical cleaning method refers to be converted into pollutant by chemically reacting
The method of material without contaminative, although with the advantages of thorough is purified, there is also the defects of efficiency is low, cost is high；
Therefore, people often mutually tie physical cleaning with chemical cleaning method to reach quick, efficient, cheap, thoroughly clean-up effect
Close, both advantage and disadvantage are subjected to complementation, make scavenging material higher to the purification efficiency of pollutant.
The purification particle that photocatalyst and porous adsorbing material are combined to form is a kind of scavenging material conventional now, both sharp
With the physisorption of porous adsorbing material, the chemical degradation principle of photocatalyst is also utilized, so that scavenging material
Purification efficiency greatly improves, and the purification to increasingly serious pollution environment has positive role.However, found by studying, it is more
The absorption of hole sorbing material is not unidirectional, can be certainly after the pollutant adsorbed in porous adsorbing material gathers finite concentration
The spilling of hair, is re-introduced into environment, causes to purify not thorough or secondary pollution；Equally, although there is photocatalyst degraded to make
With, but pollutant concentration and contact surface can all have a strong impact on its degradation speed, and then influence the purification efficiency of purification particle；Cause
This, the pollutant concentration and contact area of raising photocatalyst contact, prevents that spilling of the pollutant in porous adsorbing material can
It is effectively increased the purification efficiency of scavenging material.
The content of the invention
It is an object of the invention to overcome the shortcomings of that the purification efficiency of existing scavenging material is low, there is provided one kind purification particle and
Its preparation method；Present invention purification particle has micropore structure, and the micropore structure not only increases solid and pollution
The contact area of thing, make purification particle stronger to the adsorption capacity of pollutant, moreover it is possible to pollutant is resided in micropore structure
In, prevent its spilling, concentration of the increase pollutant in micropore structure, make adherent coatings to the degradation speed of pollutant more
It hurry up, purification is more thorough, so as to improve the purification efficiency of purification particle.
In order to realize foregoing invention purpose, the invention provides one kind to purify particle, including：Carrier and it is supported on described
The adherent coatings to pollutant with degradation function on carrier；The purification particle has micropore structure.
A kind of purification particle of the invention, is obtained in the adherent coatings that supported on carriers has degradation to pollutant
, adherent coatings have film forming, degradability and adsorptivity；After adherent coatings parcel carrier, make that there is special pore size distribution on carrier
Hole aperture diminish and form micropore structure, the micropore structure not only increases the contact surface of solid and pollutant
Product, makes the adsorption capacity of carrier and adherent coatings be improved, also using the interaction of pollutant and surface of solids molecule,
Pollutant is resided in micropore structure, will not overflow, so that the pollutant concentration in micropore structure is bigger,
Faster, purification is more thorough for the degradation speed of adherent coatings, and then improves the purification efficiency of purification particle.
A kind of above-mentioned purification particle, wherein, there is the hole that aperture is not less than 5 μm on described carrier；Carrier aperture is too
Small, hole is blocked completely after adherent coatings film forming, it is impossible to forms micropore structure, also no longer has adsorption function, pollutes
Thing can not enter hole by fast degradation, so as to cause the purification efficiency for purifying particle to reduce；Preferably, described carrier aperture
For 25-200 μm；Carrier aperture is excessive, and hole aperture is excessive on carrier after adherent coatings film forming, the micropore structure of formation,
The adsorption capacity of pollutant is decreased, pollutant has a certain degree of benefit, re-starts in environment, causes purification
The purification efficiency of grain decreases；Most preferably, described carrier aperture is 50-100 μm.
Wherein, described carrier is the adsorptions such as construction waste, float stone, husk, stalk, vegetable sponge, cornstalk particle
The strong solid for having some strength of ability.
Wherein, it is preferred that the carrier is construction waste；Construction waste is building waste, has amount greatly, disposal costs
Height, the shortcomings that reuse ratio is low, and as the carrier of purification particle, the cost of material of purification particle can not only be reduced, is given up
Thing recycles, and can save the disposal costs of building waste, mitigates the processing pressure of building waste, has product to energy-saving and emission-reduction
Pole acts on.
Wherein, it is preferred that described construction waste is the one or more in the useless fragment of brick of building, waste concrete block.
Wherein, it is preferred that described construction waste is that the technique such as cleaned, drying, crushing, sieving is prepared；Institute
The particle diameter for stating construction waste is 2-5mm.
A kind of above-mentioned purification particle, wherein, described adherent coatings are prepared including following parts by weight raw material：1-3
Part photocatalyst, the calgon of 0.1-0.3 parts, the propane diols of 3-6 parts, the activating agent of 0.2-0.5 parts, 0.2-0.5 parts
Emulsifying agent, the filler of 8-12 parts, the porous material of 8-15 parts, the film forming agent of 2-5 parts, the water of 60-80 parts；The adherent coatings are not
Only there is excellent light degradation function to pollutant, also with excellent caking property, be attached to it is difficult for drop-off on carrier, and can be with
Hole on carrier combines to form micropore structure.
Wherein, described photocatalyst is nano-TiO2, nano-ZnO, nano-tube/CdS, nanometer WO3, nanometer Fe2O3, nano PbS,
Nano SnO2, nanometer ZnS, nanometer SrTiO3, Nano-meter SiO_22In one or more；Preferably, described photocatalyst is nanometer
TiO2, to the degradation efficiency highest of pollutant, forbidden band is wide, and the pollutant kind that can be degraded is more.
Wherein, described activating agent is nonionic surfactant；Preferably, described activating agent is tween.
Wherein, it is preferred that described emulsifying agent is Span.
Wherein, it is preferred that described filler is the one or more in calcium carbonate, talcum powder, kaolin；Preferably, institute
The packing material size stated is 0.1-10 μm.
Wherein, it is preferred that described porous material be amorphous silica, diatomite, one kind in walnut shell powder or
It is a variety of；Preferably, the particle diameter of described porous material is not more than 2 μm.
Wherein, described film forming agent is the one or more in acrylic resin film forming agent, polyurethane finishing agent.
In order to realize foregoing invention purpose, further, the invention provides a kind of preparation method for purifying particle, including
Following steps：
（1）Prepare adherent coatings：First photocatalyst is dispersed in the aqueous solution of calgon and obtains suspension；Again will be living
Property agent, emulsifying agent, filler, porous material, film forming agent add suspension in, obtain adherent coatings after being uniformly mixed；
（2）Prepare purification particle：Adherent coatings are supported on carrier, are purified particle.
A kind of preparation method for purifying particle of the present invention, using the adhesiveness and film forming of coating, photocatalyst is uniformly born
It is loaded on carrier, and micropore knot that is stronger with absorption affinity ability and being resident pollutant is formed on purification particle
Structure structure, so as to which the purification particle higher to the purification efficiency of pollutant be prepared；The inventive method is simple, reliable, is adapted to
Purify extensive, the industrialized production of particle.
Compared with prior art, beneficial effects of the present invention：
1st, present invention purification particle has micropore structure, has high absorption and resident effect to pollutant, in increase micropore
It in pore structure while pollutant concentration, will not also overflow, and then improve degradation efficiency of the photocatalyst to pollutant, purify
The purification efficiency of particle significantly improves.
2nd, the present invention purification particle while cost of material is reduced, is also helped using construction waste as carrier
The recycling of resource, there is positive role to energy-saving and emission-reduction.
3rd, preparation method of the present invention is simple, reliable, is adapted to extensive, the industrialized production of purification particle.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
（1）Prepare adherent coatings：First 0.2 part of calgon is dissolved into 70 parts of water and forms solution, then by 2 parts by weight
Nano titanium oxide dispersed obtain suspension in the solution；Then in whipping process successively by 5 parts of propane diols,
0.3 part of tween, 0.3 part of Span, 5 parts of calcium carbonate, 3 parts of talcum powder, 2 parts of kaolin, 12 parts of unformed dioxy
SiClx, 3 parts of acrylate are added in suspension, and adherent coatings are obtained after well mixed；
（2）It is prepared by carrier：After the useless fragment of brick of building is cleaned up, drying, crushing, sieving, the carrier that particle diameter is 3mm is obtained；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 10min, be dried to obtain this
Invention purification particle.
Embodiment 2
（1）Prepare adherent coatings：First 0.1 part of calgon is dissolved into 60 parts of water and forms solution, then by 1 parts by weight
Nano silicon dispersed obtain suspension in the solution；Then in whipping process successively by 6 parts of propane diols,
0.5 part of tween, 0.2 part of Span, 4 parts of calcium carbonate, the kaolin of 4 parts by weight, 8 parts of amorphous silica, 5 parts
Polyurethane is added in suspension, and adherent coatings are obtained after well mixed；
（2）It is prepared by carrier：After waste concrete block is cleaned up, drying, crush, sieving, obtain the carrier that particle diameter is 5mm；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 8min, be dried to obtain this
Invention purification particle.
Embodiment 3
（1）Prepare adherent coatings：First 0.3 part of calgon is dissolved into 80 parts of water and forms solution, then by 3 parts by weight
Nano zine oxide dispersed obtain suspension in the solution；Then successively by 3 parts of propane diols, 0.2 in whipping process
The tween, 0.5 part of Span, 6 parts of talcum powder, 6 parts of kaolin, 15 parts of diatomite, 2 parts of acrylate of part are added to
In suspension, adherent coatings are obtained after well mixed；
（2）It is prepared by carrier：After float stone is cleaned up, drying, crush, sieving, obtain the carrier that particle diameter is 2mm；
（3）Prepare purification particle：Appropriate carrier is immersed in adherent coatings, taken out after stirring 12min, is dried to obtain of the invention net
Change particle.
Comparative example 1
（1）Prepare adherent coatings：First 0.2 part of calgon is dissolved into 70 parts of water and forms solution, then by 2 parts by weight
Nano titanium oxide dispersed obtain suspension in the solution；Then in whipping process successively by 5 parts of propane diols,
0.3 part of tween, 0.3 part of Span, 5 parts of calcium carbonate, 3 parts of talcum powder, 2 parts of kaolin, 12 parts of unformed dioxy
SiClx, 3 parts of acrylate are added in suspension, and adherent coatings are obtained after well mixed；
（2）Carrier：Particle diameter is the absorbent charcoal carrier of 3mm, aperture less than 5 μm；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 10min, is dried to obtain net
Change particle.
Comparative example 2
（1）Prepare adherent coatings：First 0.2 part of calgon is dissolved into 70 parts of water and forms solution, then by 2 parts by weight
Nano titanium oxide dispersed obtain suspension in the solution；Then in whipping process successively by 5 parts of propane diols,
0.3 part of tween, 0.3 part of Span, 5 parts of calcium carbonate, 3 parts of talcum powder, 2 parts of kaolin, 12 parts of unformed dioxy
SiClx, 10 parts of acrylate are added in suspension, and adherent coatings are obtained after well mixed；
（2）It is prepared by carrier：After the useless fragment of brick of building is cleaned up, drying, crushing, sieving, the carrier that particle diameter is 3mm is obtained；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 10min, is dried to obtain net
Change particle.
Comparative example 3
（1）Prepare adherent coatings：First 0.2 part of calgon is dissolved into 70 parts of water and forms solution, then by 2 parts by weight
Nano titanium oxide dispersed obtain suspension in the solution；Then in whipping process successively by 5 parts of propane diols,
0.3 part of tween, 0.3 part of Span, 5 parts of calcium carbonate, 3 parts of talcum powder, 2 parts of kaolin, 12 parts of unformed dioxy
SiClx, 1 part of acrylate are added in suspension, and adherent coatings are obtained after well mixed；
（2）It is prepared by carrier：After the useless fragment of brick of building is cleaned up, drying, crushing, sieving, the carrier that particle diameter is 3mm is obtained；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 10min, is dried to obtain net
Change particle.
Comparative example 4
（1）Prepare adherent coatings：First 0.2 part of calgon is dissolved into 70 parts of water and forms solution, then by 2 parts by weight
Nano titanium oxide dispersed obtain suspension in the solution；Then in whipping process successively by 5 parts of propane diols,
0.3 part of tween, 0.3 part of Span, 5 parts of calcium carbonate, 3 parts of talcum powder, 2 parts of kaolin, 12 parts of unformed dioxy
SiClx, 3 parts of acrylate are added in suspension, and adherent coatings are obtained after well mixed；
（2）Carrier：Particle diameter is 3mm solid glass pearl；
（3）Prepare purification particle：Take the carrier of 10 parts by weight to immerse in adherent coatings, taken out after stirring 10min, is dried to obtain net
Change particle.
Comparative example 5
After the useless fragment of brick of building is cleaned up, drying, crushing, sieving, the particle that particle diameter is 3mm is obtained, as purification
Particle.
It is 5.0mg/cm that embodiment 1-3 and comparative example 1-5 the purification particle being prepared are respectively placed in into concentration of formaldehyde3's
In closed environment, and with halogen tungsten lamp prolonged exposure 3h, the concentration value of formaldehyde in a closed environment is detected every 1h, records result
It is as follows：
| Sequence number | Concentration after 1h（mg/cm3） | Concentration after 2h（mg/cm3） | Concentration after 3h（mg/cm3） | Purifying rate（%） |
| Embodiment 1 | 2.32 | 1.18 | 1.05 | 79.0 |
| Embodiment 2 | 2.46 | 1.21 | 1.12 | 77.6 |
| Embodiment 3 | 2.35 | 1.16 | 1.08 | 78.4 |
| Comparative example 1 | 3.23 | 2.66 | 2.24 | 55.2 |
| Comparative example 2 | 3.83 | 2.85 | 2.53 | 49.4 |
| Comparative example 3 | 2.28 | 1.72 | 1.58 | 68.4 |
| Comparative example 4 | 4.12 | 3.57 | 3.31 | 33.8 |
| Comparative example 5 | 4.25 | 4.26 | 4.26 | 14.8 |
From above-mentioned analysis of experimental data, the purifying rate of the present invention purification particle PARA FORMALDEHYDE PRILLS(91,95) obtained in embodiment 1-3 is high；And
In embodiment 1, do not use present invention provide that carrier material, the hole aperture on absorbent charcoal carrier is smaller, is easily blocked, obtains
To purification particle in do not form micropore structure, the purification efficiency of PARA FORMALDEHYDE PRILLS(91,95) significantly reduces；Due to film forming agent in comparative example 2
Dosage is big, causes adherent coatings film forming more preferable, and the hole on carrier is blocked, and micropore hole is not formed in obtained purification particle
Gap structure, the purification efficiency of PARA FORMALDEHYDE PRILLS(91,95) significantly reduce；Because film forming agent dosage is small in comparative example 3, adherent coatings film forming is poor, no
Hole formation micropore structure on carrier, the purification efficiency of PARA FORMALDEHYDE PRILLS(91,95) can be significantly reduced；The carrier used in comparative example 4
Without hole, it is impossible to form micropore structure, and do not have suction-operated, the purification efficiency of PARA FORMALDEHYDE PRILLS(91,95) significantly reduces；It is right
Ratio 5 is without load adherent coatings, it is impossible to which PARA FORMALDEHYDE PRILLS(91,95) is degraded, and can only be adsorbed, and work is adsorbed after reaching absorption higher limit
It is worst to the purification efficiency of PARA FORMALDEHYDE PRILLS(91,95) with disappearance.
Claims (10)
1. one kind purification particle, it is characterised in that including：Carrier and load on the carrier to pollutant have degraded
The adherent coatings of function；The purification particle has micropore structure.
2. purification particle according to claim 1, it is characterised in that described carrier has the hole that aperture is not less than 5 μm
Hole.
3. purification particle according to claim 2, it is characterised in that described carrier be construction waste, float stone, husk,
One or more in stalk, vegetable sponge, cornstalk particle.
4. purification particle according to claim 3, it is characterised in that described carrier is construction waste.
5. purification particle according to claim 1, it is characterised in that described adherent coatings include following parts by weight former material
Material is prepared：The photocatalyst of 1-3 parts, the calgon of 0.1-0.3 parts, the propane diols of 3-6 parts, the activity of 0.2-0.5 parts
Agent, the emulsifying agent of 0.2-0.5 parts, the filler of 8-12 parts, the porous material of 8-15 parts, the film forming agent of 2-5 parts, the water of 60-80 parts.
6. purification particle according to claim 5, it is characterised in that described photocatalyst is nano-TiO2, nano-ZnO, receive
Rice CdS, nanometer WO3, nanometer Fe2O3, nano PbS, nano SnO2, nanometer ZnS, nanometer SrTiO3, Nano-meter SiO_22In one kind or
It is a variety of.
7. purification particle according to claim 5, it is characterised in that described activating agent is nonionic surfactant.
8. purification particle according to claim 5, it is characterised in that described porous material be amorphous silica,
One or more in diatomite, walnut shell powder.
9. purification particle according to claim 5, it is characterised in that described film forming agent be acrylic resin film forming agent,
One or more in polyurethane finishing agent.
10. according to the purification particle described in claim any one of 1-9, it is characterised in that the preparation method of the purification particle,
Comprise the following steps：
（1）Prepare adherent coatings：First photocatalyst is dispersed in the aqueous solution of calgon and obtains suspension；Again will be living
Property agent, emulsifying agent, filler, porous material, film forming agent add suspension in, obtain adherent coatings after being uniformly mixed；
（2）Prepare purification particle：Adherent coatings are supported on carrier, are purified particle.
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| CN105111812A (en) * | 2015-08-25 | 2015-12-02 | 无锡市长安曙光手套厂 | Light catalyst paint for removing formaldehyde in indoor air |
| JP2016187766A (en) * | 2015-03-30 | 2016-11-04 | 日本特殊陶業株式会社 | Catalyst material for microwave heating, and catalyzer for microwave heating |
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2017
- 2017-09-21 CN CN201710858567.6A patent/CN107376640B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1788796A (en) * | 2004-12-13 | 2006-06-21 | 张贵洲 | Nanometer photo-catalytic sterilizing and air-cleaning agent |
| CN102026707A (en) * | 2008-05-12 | 2011-04-20 | 日产自动车株式会社 | Exhaust gas purifying catalyst and manufacturing method of the same |
| CN102847561A (en) * | 2012-09-19 | 2013-01-02 | 合肥工业大学 | Microporous glass supported TiO2 nano composite photocatalyst and preparation method thereof |
| CN104475173A (en) * | 2014-11-13 | 2015-04-01 | 姚燕燕 | Preparation method of high-adsorption supported photocatalyst |
| JP2016187766A (en) * | 2015-03-30 | 2016-11-04 | 日本特殊陶業株式会社 | Catalyst material for microwave heating, and catalyzer for microwave heating |
| CN104826593A (en) * | 2015-05-22 | 2015-08-12 | 魏健 | Lasting and efficient air purification agent and production method thereof |
| CN105111812A (en) * | 2015-08-25 | 2015-12-02 | 无锡市长安曙光手套厂 | Light catalyst paint for removing formaldehyde in indoor air |
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|---|---|
| CN107376640B (en) | 2021-07-02 |
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