CN109529914A - A kind of modified photocatalyst material and preparation method for indoor air purification - Google Patents
A kind of modified photocatalyst material and preparation method for indoor air purification Download PDFInfo
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- CN109529914A CN109529914A CN201811424111.XA CN201811424111A CN109529914A CN 109529914 A CN109529914 A CN 109529914A CN 201811424111 A CN201811424111 A CN 201811424111A CN 109529914 A CN109529914 A CN 109529914A
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- montmorillonite
- modified photocatalyst
- air purification
- cerium
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- 239000000463 material Substances 0.000 title claims abstract description 96
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 47
- 238000004887 air purification Methods 0.000 title claims abstract description 27
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 70
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002808 molecular sieve Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- -1 rare earth ion Chemical class 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 239000000084 colloidal system Substances 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 8
- DPUCLPLBKVSJIB-UHFFFAOYSA-N cerium;tetrahydrate Chemical compound O.O.O.O.[Ce] DPUCLPLBKVSJIB-UHFFFAOYSA-N 0.000 claims abstract description 7
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052684 Cerium Inorganic materials 0.000 claims description 66
- 239000011812 mixed powder Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 19
- 150000002910 rare earth metals Chemical class 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 14
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000007062 hydrolysis Effects 0.000 claims description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 30
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 21
- 239000004408 titanium dioxide Substances 0.000 abstract description 15
- 239000002131 composite material Substances 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract description 7
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 56
- 238000012360 testing method Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000007146 photocatalysis Methods 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 8
- ODPUKHWKHYKMRK-UHFFFAOYSA-N cerium;nitric acid Chemical compound [Ce].O[N+]([O-])=O ODPUKHWKHYKMRK-UHFFFAOYSA-N 0.000 description 7
- 239000011799 hole material Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229960000892 attapulgite Drugs 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 229910052625 palygorskite Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960004756 ethanol Drugs 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000012629 purifying agent Substances 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 235000001405 Artemisia annua Nutrition 0.000 description 1
- 240000000011 Artemisia annua Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- WXQDFOGZIYLEGP-UHFFFAOYSA-N C(C(C)C)#N.C(C(C)C)#N.[N] Chemical compound C(C(C)C)#N.C(C(C)C)#N.[N] WXQDFOGZIYLEGP-UHFFFAOYSA-N 0.000 description 1
- 241000037740 Coptis chinensis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 235000011511 Diospyros Nutrition 0.000 description 1
- 244000236655 Diospyros kaki Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000246386 Mentha pulegium Species 0.000 description 1
- 235000016257 Mentha pulegium Nutrition 0.000 description 1
- 235000004357 Mentha x piperita Nutrition 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 240000006079 Schisandra chinensis Species 0.000 description 1
- 235000008422 Schisandra chinensis Nutrition 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 235000001050 hortel pimenta Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- JPMIIZHYYWMHDT-UHFFFAOYSA-N octhilinone Chemical compound CCCCCCCCN1SC=CC1=O JPMIIZHYYWMHDT-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- AYKOTYRPPUMHMT-UHFFFAOYSA-N silver;hydrate Chemical compound O.[Ag] AYKOTYRPPUMHMT-UHFFFAOYSA-N 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
-
- 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
- B01D53/007—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 irradiation
-
- 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
- B01D53/02—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
-
- 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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- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
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- 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
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/802—Visible light
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- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
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Abstract
The present invention proposes a kind of modified photocatalyst material and preparation method for indoor air purification, the modified photocatalyst material is that cerous nitrate and ceric hydroxide are separately added into water, adsorption reaction is carried out with nano montmorillonite, molecular sieve, obtained load is had to the composite material of changeable valence rare earth ion after the completion, then it is added to absolute ethanol to react to form colloid with active powdered carbon, polyvinyl alcohol, butyl titanate after mixed grinding, is finally aged, is dry, calcining, grinding and be made.Modified photocatalyst material provided by the invention, the compound of titanium dioxide photoproduction electron-hole can effectively be inhibited, so that the hydroxyl free radical quantity of titanium dioxide surface increases, improve light-catalysed efficiency, it joined active carbon simultaneously, the formaldehyde etc. in air can be adsorbed, is acted synergistically using absorption-degradation, further improves air purification effect.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of modified photocatalyst for indoor air purification
Material and preparation method.
Background technique
Indoor environmental pollution refers to generally to be made due to art work, furniture, fuel burn incompletely and chemical agent
With cause air pollutants in the long time integration of confined space.Long-term life in this context, can be to the physical and mental health of people
It constitutes a serious threat.Indoor air pollutants mainly have formaldehyde, benzene,toluene,xylene and TVOC, especially in newly-decorated room
Room, formaldehyde amount are more than ten times of standard value, the harm constituted be it is self-evident, air cleaning is very urgent.
Mainly there are the means such as plant absorption, physical absorption, chemical absorbing, catalytic degradation for indoor air purification at present.
Wherein photocatalyst is also photocatalysis technology, is one kind using photocatalyst materials such as titanium dioxide as representative, has under illumination condition
The general name of the semiconductor material of catalysis.Since titanium dioxide is cheap and easy to get, chemical stabilization and catalytic activity are high, can incite somebody to action
Organic pollutant is completely decomposed into nontoxic carbon dioxide and water, does not generate secondary pollution, becomes most common photocatalysis
Agent.
In air purification field, photocatalysis technology is also played and is played an important role, in some air clearing products, interior wall
Coating products etc. have light-catalysed application.Its photocatalysis mechanism is Titanium dioxide absorption sunlight or lighting source
In ultraviolet light after, generate electron transition, surface formed strong oxidizing property hydroxyl free radical and ultra-oxygen anion free radical, will be empty
The harmful substance dissociated in gas resolves into harmless carbon dioxide and water, achievees the purpose that purify air.
Chinese invention patent application number 201711073731.9 discloses a kind of photocatalyst air purifying agent and its preparation side
Method, comprising the following steps: titanium tetrachloride and water are mixed, titanium tetrachloride solution is obtained；Polyethylene glycol, silver nitrate and water are mixed,
Obtain mixed liquor M1；Mixed liquor M1 is added dropwise in titanium tetrachloride solution, Ag-carried nanometer titanium dioxide is made；By attapulgite clay and
Silane coupling agent hybrid reaction, it is dry, obtain modified attapulgite clay；By toluene, modified attapulgite clay, acrylamide and idol
Filtering, drying, obtain composite material M2 after the mixing of nitrogen bis-isobutyronitrile；After Ag-carried nanometer titanium dioxide and composite material M2 are mixed
Filtering, dry, obtained composite material M3；Sweet wormwood, kuh-seng, peppermint, the coptis and Schisandra chinensis are placed in ethyl alcohol and impregnated, immersion is taken
Liquid；Composite material M3 is placed in soak to dry after impregnating, obtained photocatalyst air purifying agent.Chinese invention patent application number
201810123277.1 a kind of triple effect all-weather light catalyst indoor air purification agent and the preparation method and application thereof is disclosed, it is former
Material includes: the sharp mine type titanium dioxide of 0.5-5 parts of nanoscales；1-8 parts of nano aperture diatomite；3-30 parts of persimmon extracts；0.5-5
Part octylisothiazolinone；0.5-5 parts of dispersing agents；200-350 parts of deionized waters, it is anti-that which has sterilization
The functions such as mould, deodorization, self-cleaning, purifying formaldehyde, triphen, chloridating gas, and purification efficiency is high, it is toxic in the air that can effectively degrade
Pernicious gas kills various bacteria.
In order to improve utilization rate to visible light of the photocatalyst of titanium dioxide material in air cleaning practical application, inhibit
A kind of compound, the increase living radical quantity, it is necessary to propose Novel Titanium dioxide composite photo catalyst material of photo-generate electron-hole
Material, and then the photocatalysis efficiency of photocatalyst material is improved, improve effect of the photocatalyst material in air cleaning.
Summary of the invention
It is low to visible light utilization efficiency for the photocatalyst material currently used for air cleaning, photo-generate electron-hole is easily compound
Defect, the present invention proposes a kind of modified photocatalyst material and preparation method for indoor air purification, can to improve
Light-exposed utilization rate, it is suppressed that photo-generate electron-hole it is compound, improve photocatalysis efficiency, and make using absorption-degradation collaboration
With improving air purification effect.
To solve the above problems, the invention adopts the following technical scheme:
A kind of preparation method of the modified photocatalyst material for indoor air purification, the modified photocatalyst material is by nitric acid
Cerium and ceric hydroxide are separately added into water, carry out adsorption reaction, the load that will be obtained after the completion with nano montmorillonite, molecular sieve
There is the composite material of changeable valence rare earth ion, is then added after mixed grinding with active powdered carbon, polyvinyl alcohol, butyl titanate anhydrous
Reaction forms colloid in ethyl alcohol, be finally aged, be dry, calcining, grinding and be made, specifically the preparation method is as follows:
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, calcining, grinding, obtain the modified photocatalyst material for air cleaning.
Preferably, described in step (1) load have trivalent cerium montmorillonite and molecular screen material preparation in, water, cerous nitrate,
Nano montmorillonite, molecular sieve quality ratio are 100:10-20:40-60:30-40.
Preferably, the molecular sieve is potassium A type, in sodium A type, calcium A type, calcium Z-type, sodium Z-type, sodium Y type, Na-Type Mordenit type
A combination of one or more.
Preferably, load described in step (2) has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, water, hydroxide
High cerium, nano montmorillonite, molecular sieve quality ratio are 100:10-20:40-60:30-40.
Preferably, mixed-powder described in step (3) preparation in, load have trivalent cerium montmorillonite and molecular screen material,
It is 100:80-120 that load, which has the montmorillonite of quadrivalent cerium and the mass ratio of molecular screen material,.
Preferably, the partial size of mixed-powder described in step (3) is 100-500nm.
Preferably, the ultrasonic frequency of ultrasonic disperse described in step (4) is 40-50kHz, ultrasonic disperse 20-40min.
Preferably, stirring described in step (4) uses magnetic agitation, and speed of agitator 400-500rpm stirs 2-4h.
Preferably, in the preparation of modified photocatalyst material described in step (4), dehydrated alcohol, mixed-powder, active powdered carbon,
Polyvinyl alcohol, butyl titanate mass ratio be 100:40-60:5-10:8-15:10-20.
The present invention also provides a kind of modification light touchings for indoor air purification that a kind of above-mentioned preparation method is prepared
Catalytic material.
The photocatalyst materials such as the existing titanium dioxide for air cleaning, there are visible light utilization efficiencies low, light induced electron-
The defects of hole is easily compound, photocatalysis efficiency and air purification effect are undesirable, limit its application.In consideration of it, the present invention mentions
A kind of modified photocatalyst material and preparation method for indoor air purification is by the trivalent iron compound of changeable valence rare earth elemental cerium out
Cerous nitrate and quaternary compounds ceric hydroxide are dissolved in water respectively, then add nano montmorillonite and molecular sieve is adsorbed,
It is filtered and dries after the completion of absorption, loaded montmorillonite and the molecular screen material of trivalent cerium and quadrivalent cerium respectively, so
Both materials are uniformly mixed afterwards, and are milled to nanoscale, are added in dehydrated alcohol together with active powdered carbon, polyvinyl alcohol
Ultrasonic disperse is eventually adding butyl titanate, and hydrolysis forms colloid in the case of stirring, and by ageing, drying is forged
Burn, grind and obtain the modified photocatalyst material for air cleaning.Modified photocatalyst material provided by the invention, can be effective
Inhibit the compound of titanium dioxide photoproduction electron-hole, so that the hydroxyl free radical quantity of titanium dioxide surface increases, improves light
The efficiency of catalysis, while joined active carbon, the formaldehyde etc. in air can be adsorbed, is acted synergistically using absorption-degradation, into one
Step improves air purification effect.
The present invention proposes a kind of modified photocatalyst material and preparation method for indoor air purification, with prior art phase
Than the feature and excellent effect protruded is:
1, the present invention is adsorbed using the compound of changeable valence rare earth cerium and montmorillonite and molecular sieve, and forming load has changeable valence rare earth
Then the montmorillonite of ion and molecular sieve form composite modified photocatalyst material with catalysis material forerunner's precursor reactant again.
2, the present invention can effectively be inhibited using the rare earth ion storage appraised at the current rate and the ability of release photo-generate electron-hole
Titanium dioxide photoproduction electron-hole it is compound so that the hydroxyl free radical quantity of titanium dioxide surface increases, improve photocatalysis
Efficiency.
3, it joined active carbon in photocatalyst composite material produced by the present invention, the formaldehyde etc. in air can be adsorbed, benefit
With absorption-degradation synergistic effect, clean-up effect is further improved.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；Molecular sieve is potassium
A type；Load has in the montmorillonite and molecular screen material preparation of trivalent cerium, water, cerous nitrate, nano montmorillonite, molecular sieve quality ratio
Example is 100:16:48:34；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；Molecule
Sieve is potassium A type；Load has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, and water, nano montmorillonite, divides ceric hydroxide
Son sieve mass ratio is 100:16:48:34；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；Mixed-powder preparation in, load have the montmorillonite of trivalent cerium and molecular screen material, load have quadrivalent cerium montmorillonite and
The mass ratio of molecular screen material is 100:95；The average grain diameter of mixed-powder is 300nm；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, 200 DEG C of calcining 25min, grinding, obtain the modified photocatalyst material for air cleaning；The ultrasonic frequency of ultrasonic disperse
For 45kHz, ultrasonic disperse 28min；Stirring uses magnetic agitation, and speed of agitator 440rpm stirs 3h；Modified photocatalyst material
In preparation, dehydrated alcohol, mixed-powder, active powdered carbon, polyvinyl alcohol, butyl titanate mass ratio be 100:47:7:11:
14。
Test method:
The modified photocatalyst material that the present embodiment is prepared carries out the test of visible light utility, is shone using xenon lamp
Test is penetrated, tests the ratio that photocatalyst material of the present invention accounts for visible light-responded spectral region visible spectrum, as
It can be seen that light utilization efficiency, obtain that the results are shown in Table 1；
The modified photocatalyst material that the present embodiment is prepared carries out air cleaning performance test, in 1m × 1m × 1m test
It is tested in case, the xenon lamp of arrangement 10W in case arranges 10g photochemical catalyst produced by the present invention around xenon lamp, is passed through one
Determine the formaldehyde gas A of concentration0, using PPM400ST every concentration of formaldehyde A in 20min test boxi, and according to formula B=(A0-
Ai)/A0Purifying formaldehyde rate is calculated, the testing time is respectively 10min, 20min and 40min, obtains that the results are shown in Table 1.
Embodiment 2
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；Molecular sieve is sodium
A type；Load has in the montmorillonite and molecular screen material preparation of trivalent cerium, water, cerous nitrate, nano montmorillonite, molecular sieve quality ratio
Example is 100:10:40:30；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；Molecule
Sieve is sodium A type；Load has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, and water, nano montmorillonite, divides ceric hydroxide
Son sieve mass ratio is 100:10:40:30；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；Mixed-powder preparation in, load have the montmorillonite of trivalent cerium and molecular screen material, load have quadrivalent cerium montmorillonite and
The mass ratio of molecular screen material is 100:80；The average grain diameter of mixed-powder is 100nm；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, 200 DEG C of calcining 30min, grinding, obtain the modified photocatalyst material for air cleaning；The ultrasonic frequency of ultrasonic disperse
For 40kHz, ultrasonic disperse 40min；Stirring uses magnetic agitation, and speed of agitator 400rpm stirs 4h；Modified photocatalyst material
In preparation, dehydrated alcohol, mixed-powder, active powdered carbon, polyvinyl alcohol, butyl titanate mass ratio be 100:40:5:8:
10。
It is tested using the method for embodiment 1, test result is as shown in table 1.
Embodiment 3
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；Molecular sieve is calcium
A type；Load has in the montmorillonite and molecular screen material preparation of trivalent cerium, water, cerous nitrate, nano montmorillonite, molecular sieve quality ratio
Example is 100:20:60:40；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；Molecule
Sieve is calcium A type；Load has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, and water, nano montmorillonite, divides ceric hydroxide
Son sieve mass ratio is 100:20:60:40；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；Mixed-powder preparation in, load have the montmorillonite of trivalent cerium and molecular screen material, load have quadrivalent cerium montmorillonite and
The mass ratio of molecular screen material is 100:120；The average grain diameter of mixed-powder is 500nm；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, 250 DEG C of calcining 25min, grinding, obtain the modified photocatalyst material for air cleaning；The ultrasonic frequency of ultrasonic disperse
For 50kHz, ultrasonic disperse 20min；Stirring uses magnetic agitation, and speed of agitator 500rpm stirs 2h；Modified photocatalyst material
In preparation, dehydrated alcohol, mixed-powder, active powdered carbon, polyvinyl alcohol, butyl titanate mass ratio be 100:60:10:
15: 20。
It is tested using the method for embodiment 1, test result is as shown in table 1.
Embodiment 4
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；Molecular sieve is sodium
Mordenite；Load has in the montmorillonite and molecular screen material preparation of trivalent cerium, water, cerous nitrate, nano montmorillonite, molecular sieve
Mass ratio is 100:15:50:35；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；Molecule
Sieve is Na-Type Mordenit type；Load has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, and water, ceric hydroxide, nanometer are covered
De- stone, molecular sieve quality ratio are 100:15:50:35；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；Mixed-powder preparation in, load have the montmorillonite of trivalent cerium and molecular screen material, load have quadrivalent cerium montmorillonite and
The mass ratio of molecular screen material is 100:100；The average grain diameter of mixed-powder is 400nm；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, 200 DEG C of calcining 25min, grinding, obtain the modified photocatalyst material for air cleaning；The ultrasonic frequency of ultrasonic disperse
For 45kHz, ultrasonic disperse 30min；Stirring uses magnetic agitation, and speed of agitator 450rpm stirs 3h；Modified photocatalyst material
In preparation, dehydrated alcohol, mixed-powder, active powdered carbon, polyvinyl alcohol, butyl titanate mass ratio be 100:50:8:12:
15。
It is tested using the method for embodiment 1, test result is as shown in table 1.
Comparative example 1
Comparative example 1 compared with Example 1, is not added with the compound of changeable valence rare earth cerium, modified photocatalyst material obtained is using real
The method for applying example 1 is tested, and test result is as shown in table 1.
Comparative example 2
Comparative example 2 compared with Example 1, is not added with active powdered carbon, the method that modified photocatalyst material obtained uses embodiment 1
It is tested, test result is as shown in table 1.
Table 1:
Claims (10)
1. a kind of preparation method of the modified photocatalyst material for indoor air purification, which is characterized in that specific preparation method
It is as follows:
(1) the trivalent iron compound cerous nitrate of changeable valence rare earth elemental cerium is soluble in water, nano montmorillonite and molecular sieve is then added
It is adsorbed, is filtered and dries after the completion, obtain montmorillonite and molecular screen material that load has trivalent cerium；
(2) the quaternary compounds ceric hydroxide of changeable valence rare earth elemental cerium is dispersed in water, then be added nano montmorillonite and
Molecular sieve is adsorbed, and is filtered and is dried after the completion, and montmorillonite and molecular screen material that load has quadrivalent cerium are obtained；
(3) montmorillonite of trivalent cerium and quadrivalent cerium and molecular screen material are uniformly mixed load respectively, abundant ball milling is mixed
Close powder；
(4) gained mixed-powder and active powdered carbon, polyvinyl alcohol are added in dehydrated alcohol, ultrasonic disperse is uniform, then plus
Enter butyl titanate, adjust pH to 2 using nitric acid, hydrolysis occurs in the case of stirring and forms colloid, is finally aged, is dry
Dry, calcining, grinding, obtain the modified photocatalyst material for air cleaning.
2. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that load described in step (1) has in the montmorillonite and molecular screen material preparation of trivalent cerium, and water, cerous nitrate, nanometer are covered de-
Stone, molecular sieve quality ratio are 100:10-20:40-60:30-40.
3. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is, the molecular sieve be one of potassium A type, sodium A type, calcium A type, calcium Z-type, sodium Z-type, sodium Y type, Na-Type Mordenit type or
Two or more combinations.
4. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that load described in step (2) has in the montmorillonite and molecular screen material preparation of quadrivalent cerium, water, ceric hydroxide, nanometer
Montmorillonite, molecular sieve quality ratio are 100:10-20:40-60:30-40.
5. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that in the preparation of mixed-powder described in step (3), load has the montmorillonite of trivalent cerium and molecular screen material, load to have four
The montmorillonite of valence cerium and the mass ratio of molecular screen material are 100:80-120.
6. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that the partial size of mixed-powder described in step (3) is 100-500nm.
7. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that the ultrasonic frequency of ultrasonic disperse described in step (4) is 40-50kHz, ultrasonic disperse 20-40min.
8. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is that stirring described in step (4) uses magnetic agitation, and speed of agitator 400-500rpm stirs 2-4h.
9. a kind of preparation method of modified photocatalyst material for indoor air purification according to claim 1, special
Sign is, in the preparation of modified photocatalyst material described in step (4), dehydrated alcohol, mixed-powder, active powdered carbon, polyvinyl alcohol,
The mass ratio of butyl titanate is 100:40-60:5-10:8-15:10-20.
10. a kind of modification light for indoor air purification that preparation method described in any claim of claim 1-9 is prepared
Catalyst material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259837A (en) * | 2021-10-21 | 2022-04-01 | 江苏久亚机械科技有限公司 | Efficient capture method for carbon dioxide in flue gas |
| CN114307636A (en) * | 2022-01-14 | 2022-04-12 | 杭州妙蓝环保科技有限公司 | Nano photocatalyst air deodorant and preparation method thereof |
| CN116550095A (en) * | 2023-06-29 | 2023-08-08 | 广东职业技术学院 | Air purifying composition for removing peculiar smell and preparation method thereof |
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2018
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259837A (en) * | 2021-10-21 | 2022-04-01 | 江苏久亚机械科技有限公司 | Efficient capture method for carbon dioxide in flue gas |
| CN114259837B (en) * | 2021-10-21 | 2022-09-13 | 江苏久亚机械科技有限公司 | Efficient capture method for carbon dioxide in flue gas |
| CN114307636A (en) * | 2022-01-14 | 2022-04-12 | 杭州妙蓝环保科技有限公司 | Nano photocatalyst air deodorant and preparation method thereof |
| CN114307636B (en) * | 2022-01-14 | 2022-11-04 | 杭州妙蓝环保科技有限公司 | Nano photocatalyst air deodorant and preparation method thereof |
| CN116550095A (en) * | 2023-06-29 | 2023-08-08 | 广东职业技术学院 | Air purifying composition for removing peculiar smell and preparation method thereof |
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