CN108176347A - A kind of preparation method of Modified air scavenging material and its material obtained - Google Patents
A kind of preparation method of Modified air scavenging material and its material obtained Download PDFInfo
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- CN108176347A CN108176347A CN201810118836.XA CN201810118836A CN108176347A CN 108176347 A CN108176347 A CN 108176347A CN 201810118836 A CN201810118836 A CN 201810118836A CN 108176347 A CN108176347 A CN 108176347A
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 230000002000 scavenging effect Effects 0.000 title claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 30
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000004887 air purification Methods 0.000 claims abstract description 26
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 26
- 150000002910 rare earth metals Chemical class 0.000 claims description 26
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 10
- 235000019441 ethanol Nutrition 0.000 claims description 8
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 229910001940 europium oxide Inorganic materials 0.000 claims description 2
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 claims description 2
- 239000013335 mesoporous material Substances 0.000 claims description 2
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 101710134784 Agnoprotein Proteins 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 36
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 15
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 abstract description 9
- 229930040373 Paraformaldehyde Natural products 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 229920002866 paraformaldehyde Polymers 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 5
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000003599 detergent Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 239000000908 ammonium hydroxide Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000000505 pernicious effect Effects 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 238000006862 quantum yield reaction Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- -1 dry Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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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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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/08—Halides
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- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/0308—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41
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- B01J35/39—Photocatalytic properties
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
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Abstract
The present invention is improved existing absorbent-type material for air purification, a kind of preparation method of Modified air scavenging material is provided, using Ag/AgBr and graphene oxide to TiO2It is modified, then by TiO2It is carried on porous material, realizes the purification to air using absorption and light-catalysed synergistic effect, so as to improve air purification efficiency, and PARA FORMALDEHYDE PRILLS(91,95) and benzene all have stronger detergent power, are with a wide range of applications.
Description
Technical field
This application involves a kind of preparation methods of Modified air scavenging material, and more particularly to one kind is by Ag/AgBr and oxidation
The preparation method for the material for air purification that graphene is modified.
Background technology
With living standards of the people raising and a large amount of interior decoration industrial chemicals use, a large amount of organic pollutions also with
Get in, significant threat is produced to people’s lives health.Therefore about the research of material for air purification also increasingly
Pay attention to.In recent years, the research of the novel porous materials such as rare earth mesoporous oxide, activated carbon fiber, carbonization Micro-wood Fiber is micro-
The adsorbing separation of nano particle provides new direction, but this technology often adsorbs pernicious gas, and can not be to being harmful to gas
Body is effectively degraded.It is another kind of with TiO2It is that currently used air is net for the photocatalyst type material for air purification of catalyst
Change material.
Chinese patent CN201210594636.4 discloses a kind of surfactant-modified activated carbon fiber air purification
Material has higher air purification effect.But still there are eager demand and requirement for the material for air purification for developing new,
It is one of research topic of air purification field.
It is compound that Chinese patent CN201710470915.2 discloses a kind of graphene oxide/titanium dioxide-activated carbon three-dimensional
Material and preparation method thereof has stronger formaldehyde removal ability, but tests and find that its degradation capability to benzene is weaker.
Present inventor provides the preparation method of the material for air purification of the application, is prepared by research
Material for air purification PARA FORMALDEHYDE PRILLS(91,95) and benzene are respectively provided with stronger catalytic degradation ability, have wide application market.
Invention content
The object of the present invention is to provide a kind of preparation method of material for air purification, by existing absorbent-type air purification
Material is modified using Ag/AgBr and graphene oxide, all has the sky of stronger degradation capability so as to obtain a kind of PARA FORMALDEHYDE PRILLS(91,95) and benzene
Gas scavenging material greatly improves the purification efficiency of material for air purification, and air purifying preparation is made to have stronger degradation capability.
Rare earth mesoporous oxide has stronger suction-operated, but since titanium dioxide is a kind of wide bandgap semiconductor material
Material, its quantum yield is low under visible light, and which also limits its potential applications.In order to overcome the problems, such as these, people carry out
A large amount of to study to improve the quantum yield of nano-titanium dioxide under visible light, research finds to be coated on titanium dioxide surface
Silver bromide can be as the active component for improving optically catalytic TiO 2 effect under visible ray, and the Ag of titanium dioxide surface+Group
Divide the electric charge transfer between the separation that can promote electron-hole pair and interface, can also improve the quantum yield of titanium dioxide.
TiO2It is common photocatalyst catalyst, inventor is using Ag/AgBr and graphene oxide to TiO2It is modified, then loads
In on rare earth mesoporous oxide, Ag/AgBr and graphene oxide can promote light-catalyzed reaction, so as to utilize absorption and photocatalysis
Synergistic effect realize purification to air.Particularly by being modified, inventor has found to obtain effectively the degradation capability of benzene
It improves.
In order to solve the above technical problems, invention provides following technical solution：
The present invention provides a kind of preparation method of Modified air scavenging material, it is characterised in that includes the following steps：
1) graphene oxide suspension is prepared；
2) to step 1）Obtained graphene oxide suspension adds in cetyl trimethylammonium bromide (CTAB) and nanometer
TiO2, after mixing, add in AgNO3Ammonia spirit, 10h is stirred at room temperature, obtains the second suspension；
3) to step 2）The second obtained suspension adds in porous material, stirs, and centrifuges, and precipitation is washed with water, dry,
The Modified air scavenging material is obtained after being calcined at 400-800 DEG C.
Further, one kind in carbon fiber, rare earth mesoporous oxide, activated carbon fiber of the porous material or
It is a variety of.
Preferably, the porous material is selected from rare earth mesoporous oxide.
In one embodiment of invention, the rare earth mesoporous oxide is selected from rare earth mesoporous cerium oxide, rare earth mesoporous
It is one or more in lanthana, rare earth mesoporous neodymia, rare earth mesoporous yttrium oxide, rare earth mesoporous europium oxide.
In an embodiment of invention, the rare earth mesoporous oxide is selected from rare earth mesoporous cerium oxide, rare earth mesoporous
It is one or more in lanthana.
As invention preferred embodiment, the mesoporous material of the rare earth mesoporous oxide is mesoporous silicon oxide point
Son sieve.
Preferably, the mesoporous silica molecular sieve be selected from SBA-16, MCM-22, MCM-41, MCM-48, KIT-6,
SAPO-11、SAPO-5、SAPO-34、ZSM-5、ZSM-11、ZSM-12。
Further, the SiO 2 molecular sieve is preferably SBA-16, MCM-22, KIT-6, SAPO-5.
Preferably, step 1）It is middle prepare graphene oxide suspension method be：Add graphene oxide into water and second
In the mixed solution of alcohol or methanol, it is ultrasonically treated, then stirs, make its abundant mixing, obtain graphene oxide suspension.Into one
Preferably, water and the ratio of ethyl alcohol or methanol are 6 to step:4-7:3.
Preferably, porous material and TiO2Mass ratio be (1-15):1, preferably (4-9):1；
Further, graphene oxide and TiO2Mass ratio be (0.1-0.2):(10-25)；
Preferably, AgNO3With TiO2Mass ratio be (0.2-0.8):(10-25)；Cetyl trimethylammonium bromide (CTAB)
With TiO2Mass ratio be (1-2):(10-25)；
Further, step 3）Calcination temperature control at 500-700 DEG C；
Rare earth mesoporous oxide used in the present invention can be by commercially available or prepared, such as can according to the method for this field routine
To be prepared according to method disclosed in Chinese patent 200710170692.4.
Material for air purification provided by the invention has high air purification efficiency：Porous material is a kind of effective absorption
Material as main carriers, is conducive to the polluted gas in air purifying preparation absorption air；Add in Ag/AgBr and oxidation
Graphene is to TiO2It is modified, photocatalyst catalytic action can be promoted.Make so as to fulfill using absorption and light-catalysed collaboration
With the purification realized to air, purification efficiency is improved, particularly, is modified by adding in Ag/AgBr and graphene oxide so that this
Two kinds of pernicious gases of material for air purification PARA FORMALDEHYDE PRILLS(91,95) and benzene of invention have preferable degradation effect.
Specific embodiment
The solution of the present invention is explained further by following embodiment, but is not used in the protection model of limitation the application
It encloses.
Embodiment 1
120mg graphene oxides are slowly added into 60mL water in the mixed solution of 40mL ethyl alcohol, being ultrasonically treated 3h, stirring
Mixing obtains graphene oxide suspension；Add in 1.2g cetyl trimethylammonium bromides (CTAB) and 10g nano-TiOs2, mix
After closing uniformly, 2.5mL is added in dissolved with 0.24g AgNO3Ammonium hydroxide (25wt%NH3), after 10h is stirred at room temperature, add in 50g SBA-
16 mesoporous lanthanas stir 4h, centrifuge, and precipitation is washed with water, dry, calcine that obtain air after 3h net at 550 DEG C
Change material.
Embodiment 2
100mg graphene oxides are slowly added into 70mL water in the mixed solution of 30mL methanol, being ultrasonically treated 3h, stirring
Mixing obtains graphene oxide suspension；Add in 1.5g cetyl trimethylammonium bromides (CTAB) and 15g nano-TiOs2, mix
After closing uniformly, 3mL is added in dissolved with 0.3g AgNO3Ammonium hydroxide (25wt%NH3), after 8h is stirred at room temperature, it is mesoporous to add in 90g KIT-6
Cerium oxide, stir 5h, centrifuge, precipitation is washed with water, dry, and material for air purification is obtained after calcining 3h at 650 DEG C.
Embodiment 3
150mg graphene oxides are slowly added into 90mL water in the mixed solution of 50mL ethyl alcohol, being ultrasonically treated 3h, stirring
Mixing obtains graphene oxide suspension；Add in 2g cetyl trimethylammonium bromides (CTAB) and 25g nano-TiOs2, mixing
After uniformly, 5mL is added in dissolved with 0.6g AgNO3Ammonium hydroxide (25wt%NH3), after 10h is stirred at room temperature, adds in 200g SAPO-5 and be situated between
The cerium oxide in hole stirs 3h, centrifuges, and precipitation is washed with water, dry, and air purification material is obtained after calcining 5h at 500 DEG C
Material.
Embodiment 4
100mg graphene oxides are slowly added into 60mL water in the mixed solution of 40mL ethyl alcohol, being ultrasonically treated 3h, stirring
Mixing obtains graphene oxide suspension；Add in 1g cetyl trimethylammonium bromides (CTAB) and 15g nano-TiOs2, mixing
After uniformly, ammonium hydroxide (25wt%NH3) of the 3mL dissolved with 0.3g AgNO3 is added in, after 10h is stirred at room temperature, 110g MCM-22 is added in and is situated between
The cerium oxide in hole stirs 4h, centrifuges, and precipitation is washed with water, dry, and air purification material is obtained after calcining 3h at 700 DEG C
Material.
Reference examples 1
120mg graphene oxides are slowly added into 60mL water in the mixed solution of 40mL ethyl alcohol, being ultrasonically treated 3h, stirring
Mixing obtains graphene oxide suspension；Add in 10g nano-TiOs2, after mixing, after 10h is stirred at room temperature, add in 50g
Lanthana mesoporous SBA-16 stirs 4h, centrifuges, and precipitation is washed with water, dry, and sky is obtained after calcining 3h at 550 DEG C
Gas scavenging material.
5 air purification effect of embodiment is tested
The photocatalytic degradation experiment of formaldehyde, benzene is carried out to the material for air purification that the application is prepared, method is as follows：Take implementation
Material for air purification prepared by example 1-4 and reference examples 1, is placed in two closed reative cells, wherein the contamination gas of 1 reative cell
Body is formaldehyde, a concentration of 1.0mg/m3, the polluted gas of another reative cell is benzene, a concentration of 1.0mg/m3, material for air purification
After exposure stands 1h, using ultraviolet irradiation 2h, after standing 3h, indoor gas reaches balance again, is measured with gas chromatography anti-
The concentration of formaldehyde and benzene in room is answered, calculates the clean-up effect of pernicious gas in 6h.Wherein, embodiment 1- embodiments 4 PARA FORMALDEHYDE PRILLS(91,95)
Purifying rate respectively reaches 92.6%, 96.4%, 90.9%, 94.5%；Respectively reach 96.6% to the purifying rate of benzene, 95.2%, 97.7%,
93.9%；With preferable clean-up effect, and the purifying rate of 1 PARA FORMALDEHYDE PRILLS(91,95) of comparative example is 91.8%, and the purifying rate to benzene is only
70.2%。
From embodiment 5 as can be seen that the material for air purification of the present invention uses graphene oxide and Ag/AgBr to TiO2Into
Row is modified, not only realizes the synergistic effect of absorption and photocatalytic degradation, and show to benzene and formaldehyde all have compared with
Strong detergent power.
Present invention has been a degree of descriptions, it will be apparent that, in the condition for not departing from the spirit and scope of the present invention
Under, the appropriate variation of each condition can be carried out.It is appreciated that the present invention is not limited to the embodiment, and it is attributed to claim
Range, include the equivalent replacement of each factor.
Claims (10)
1. a kind of preparation method of Modified air scavenging material, which is characterized in that include the following steps：
1）Prepare graphene oxide suspension；
2）To step 1）Obtained graphene oxide suspension adds in cetyl trimethylammonium bromide (CTAB) and nano-TiO2,
After mixing, AgNO is added in3Ammonia spirit, 10h is stirred at room temperature, obtains the second suspension；
3）To step 2）The second obtained suspension adds in porous material, stirs, and centrifuges, and precipitation is washed with water, dry,
The Modified air scavenging material is obtained after being calcined at 400-800 DEG C.
2. the preparation method of Modified air scavenging material described in claim 1, it is characterised in that the porous material is selected from
Rare earth mesoporous oxide.
3. the preparation method of claim 1-2 any one of them Modified air scavenging materials, it is characterised in that the rare earth
Mesopore oxide is selected from rare earth mesoporous cerium oxide, rare earth mesoporous lanthana, rare earth mesoporous neodymia, rare earth mesoporous yttrium oxide, dilute
It is one or more in the mesoporous europium oxide of soil.
4. the preparation method of the Modified air scavenging material described in claim 3, it is characterised in that the rare earth mesoporous oxidation
Object is one or more in rare earth mesoporous lanthana, rare earth mesoporous cerium oxide.
5. the preparation method of claim 2-4 any one of them Modified air scavenging materials, it is characterised in that the rare earth
The mesoporous material of mesopore oxide is mesoporous silica molecular sieve.Preferably, the mesoporous silica molecular sieve is selected from
SBA-16、MCM-22、MCM-41、MCM-48、KIT-6、SAPO-11、SAPO-5、SAPO-34、ZSM-5、ZSM-11、ZSM-12。
6. the preparation method of the Modified air scavenging material described in claim 5, it is characterised in that the mesoporous silicon oxide
Molecular sieve is selected from SBA-16, MCM-22, KIT-6, SAPO-5.
7. the preparation method of claim 1-6 any one of them Modified air scavenging materials, which is characterized in that step 1）To incite somebody to action
Graphene oxide is added to water in the mixed solution of ethyl alcohol or methanol, being ultrasonically treated, then stirring, make its abundant mixing, obtain
To graphene oxide suspension.It is further preferred that the ratio of water and ethyl alcohol or methanol is 6:4-7:3.
8. the preparation method of claim 1-7 any one of them Modified air scavenging materials, it is characterised in that porous material with
TiO2Mass ratio be (1-15):1, preferably (4-9):1；Graphene oxide and TiO2Mass ratio be (0.1-0.2):(10-
25)；AgNO3With TiO2Mass ratio be (0.2-0.8):(10-25)；Cetyl trimethylammonium bromide (CTAB) and TiO2's
Mass ratio is (1-2):(10-25).
9. the preparation method of claim 1-8 any one of them Modified air scavenging materials, it is characterised in that step 3）Forge
Temperature control is burnt at 500-700 DEG C.
10. the material for air purification that any one of the claim 1-9 preparation methods are prepared.
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