CN108906016A - A kind of preparation method of porous titanium dioxide photocatalysis material - Google Patents
A kind of preparation method of porous titanium dioxide photocatalysis material Download PDFInfo
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- CN108906016A CN108906016A CN201810681421.3A CN201810681421A CN108906016A CN 108906016 A CN108906016 A CN 108906016A CN 201810681421 A CN201810681421 A CN 201810681421A CN 108906016 A CN108906016 A CN 108906016A
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims abstract description 30
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 24
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000000725 suspension Substances 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000011941 photocatalyst Substances 0.000 claims abstract description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005470 impregnation Methods 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 12
- 239000012265 solid product Substances 0.000 claims abstract description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- DFFDSQBEGQFJJU-UHFFFAOYSA-M butyl carbonate Chemical compound CCCCOC([O-])=O DFFDSQBEGQFJJU-UHFFFAOYSA-M 0.000 claims abstract description 6
- 238000005119 centrifugation Methods 0.000 claims abstract description 6
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 6
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019441 ethanol Nutrition 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 235000012489 doughnuts Nutrition 0.000 claims description 12
- 238000009987 spinning Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910000059 tellane Inorganic materials 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000003929 acidic solution Substances 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 4
- 229910001868 water Inorganic materials 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 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 1
- 229910010413 TiO 2 Inorganic materials 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000002242 deionisation method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052714 tellurium Inorganic materials 0.000 claims 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 45
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 45
- 230000015556 catabolic process Effects 0.000 abstract description 17
- 238000006731 degradation reaction Methods 0.000 abstract description 17
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229960005196 titanium dioxide Drugs 0.000 description 35
- 235000010215 titanium dioxide Nutrition 0.000 description 33
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002866 paraformaldehyde Polymers 0.000 description 3
- 206010013786 Dry skin Diseases 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000010382 chemical cross-linking Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 235000011007 phosphoric acid Nutrition 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- 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
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- 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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- 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
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
- B01J37/033—Using Hydrolysis
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Abstract
This application discloses a kind of preparation methods of porous titanium dioxide photocatalysis material, including：(1), the lauryl amine of 3~7 parts by weight is added in absolute ethanol solution, is configured to the solution of 3.5~6mmol/L, the butyl carbonate of 1.2~2 parts by weight is then added, is stirred 10~60min.It is heated 10~36 hours under the conditions of 100~120 DEG C, reaction product centrifugation obtains solid product, then clean repeatedly to solid product using the mixed solution of ethyl alcohol and nitric acid, obtains poriferous titanium dioxide after dry；(2), compound concentration is in 5~7% titanium deoxide catalyst suspension；(3), hollow carbon fiber carrier is prepared；(4), by hollow carbon fiber carrier impregnation, 20~60min, lifting are dry after coming out in titanium dioxide composite photocatalyst suspension；By hollow carbon fiber carrier impregnation, 10~60min, lifting are dry after coming out in titanium dioxide optical catalyst suspension.Its Formaldehyde decomposition speed of material of the invention is fast, and degradation rate is high, and formaldehyde gas degradation rate can reach 93%, and degradation of toluene rate reaches 69.7%.
Description
Technical field
This application involves technical field of air purification, more particularly to a kind of preparation of porous titanium dioxide photocatalysis material
Method.
Background technique
Studies have shown that photocatalysis technology has good application prospect photochemical catalyst that can divide in terms of environmental pollution improvement
It dissipates and light catalyzed coating is made in resin, can not only make coating that there is excellent performance, can also be effectively reduced in environment dirty
The concentration of metachromia gas makes organic or inorganic pollutant that redox reaction occur under photocatalysis, generates H2O、CO2And
The substances such as salt reach innoxious, thus environment purification.
Titanium dioxide (TiO2), photon can be captured and realize separation of charge, be most common catalysis material.Such nothing
The photocatalytic process of machine semiconductor light-catalyst be by light excitation generate electrons and holes, respectively be adsorbed onto catalyst
The species on surface occur reduction and oxidation reaction and realize.But its photochemical catalyst powder faces photocatalysis in application process
The problems such as low efficiency and low adsorbance.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of porous titanium dioxide photocatalysis material, to overcome existing skill
Deficiency in art.
To achieve the above object, the present invention provides the following technical solutions：
The embodiment of the present application discloses a kind of preparation method of porous titanium dioxide photocatalysis material, including：
(1), the lauryl amine of 3~7 parts by weight is added in absolute ethanol solution, is configured to the molten of 3.5~6mmol/L
Then liquid is added the butyl carbonate of 1.2~2 parts by weight, is stirred 10~60min.10 are heated under the conditions of 100~120 DEG C
~36 hours, reaction product centrifugation obtained solid product, was then carried out using the mixed solution of ethyl alcohol and nitric acid to solid product
Cleaning repeatedly, obtains poriferous titanium dioxide after dry；
(2), poriferous titanium dioxide is added into deionized water, it is outstanding in 5~7% titanium deoxide catalysts is configured to concentration
Supernatant liquid；
(3), hollow carbon fiber carrier is prepared；
(4), 20~60min, lifting in titanium dioxide composite photocatalyst suspension by hollow carbon fiber carrier impregnation
In 90~120 DEG C of dry 60~120min after out；Continue the hollow carbon fiber carrier impregnation after drying in titanium-dioxide photo
10~60min in catalyst suspension obtains poriferous titanium dioxide light in 60~120 DEG C of dry 30~90min after lifting out
Catalysis material.
Preferably, in the preparation method of above-mentioned porous titanium dioxide photocatalysis material, step (2) includes：In room temperature
Under the conditions of, sodium hydrogen telluride, poriferous titanium dioxide are add to deionized water, 10~30min of magnetic agitation；Then acetic acid is added
Cadmium, mercaptopropionic acid 10~30min of ultrasonic disperse obtain titanium deoxide catalyst suspension.
Preferably, in the preparation method of above-mentioned porous titanium dioxide photocatalysis material, the sodium hydrogen telluride and porous
The weight ratio of titanium dioxide is (30~50)：(150~200).
Preferably, in the preparation method of above-mentioned porous titanium dioxide photocatalysis material, the cadmium acetate and sulfydryl third
The weight ratio of acid is (60~80)：(50~60).
Preferably, in the preparation method of above-mentioned porous titanium dioxide photocatalysis material, titanium deoxide catalyst suspends
Liquid mass concentration is 6.4%.
Preferably, in the preparation method of above-mentioned porous titanium dioxide photocatalysis material, step (3) includes：
Under 370~450 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, obtains doughnut, then
In chemical crosslinking device, oxygen, which is added, makes it react 20~30min at 50~60 DEG C, washs to doughnut, removes
Then the impurity on surface first impregnates 8~15min in an acidic solution, wash to neutrality, then proceed to impregnate in alkaline solution
10~20min is washed to neutrality, is then carbonized 1~3 hour in 2500~2800 DEG C of graphitizing furnace.
Disclosed herein as well is a kind of preparation methods of porous titanium dioxide photocatalysis material, including：
(1), the lauryl amine of 3 parts by weight is added in absolute ethanol solution, is configured to the solution of 4mmol/L, then plus
The butyl carbonate for entering 1.5 parts by weight, is stirred 20min, heats 16 hours under the conditions of 100 DEG C, and reaction product centrifugation obtains
Then solid product clean repeatedly, obtains porous two after dry using the mixed solution of ethyl alcohol and nitric acid to solid product
Titanium oxide；
(2), under normal temperature conditions, the poriferous titanium dioxide of the sodium hydrogen telluride of 45 parts by weight, 180 parts by weight is added to
In ionized water, magnetic agitation 20min；Then the cadmium acetate of 70 parts by weight, the mercaptopropionic acid ultrasonic disperse of 55 parts by weight is added
10min obtains mass concentration in 6.4% titanium dioxide composite photocatalyst suspension；
(3), under 400 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, obtains doughnut, then
In chemical crosslinking device, oxygen, which is added, makes it react 30min at 60 DEG C, washs to doughnut, removes the miscellaneous of surface
Then matter first impregnates 10min in an acidic solution, washing to neutrality then proceedes to impregnate 10min in alkaline solution, washs
It to neutrality, is then carbonized 2 hours in 2600 DEG C of graphitizing furnace, obtains hollow carbon fiber carrier；
(4), by hollow carbon fiber carrier impregnation, 40min, lifting are come out in titanium dioxide composite photocatalyst suspension
Afterwards in 110 DEG C of dry 120min；Continue the hollow carbon fiber carrier impregnation after drying to hang in titanium dioxide composite photocatalyst
10min in supernatant liquid obtains composite photocatalyst material in 110 DEG C of dry 70min after lifting out.
Compared with the prior art, the advantages of the present invention are as follows：Its Formaldehyde decomposition speed of material of the invention is fast, and degradation rate
Height, formaldehyde gas degradation rate can reach 93%, and degradation of toluene rate reaches 69.7%.
Specific embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment are only used
In illustrating the present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1
The lauryl amine of 3 parts by weight is added in absolute ethanol solution, the solution of 4mmol/L is configured to, is then added 1.5
The butyl carbonate of parts by weight, is stirred 20min.It is heated 16 hours under the conditions of 100 DEG C, reaction product centrifugation obtains solid and produces
Then object clean repeatedly, obtains poriferous titanium dioxide after dry using the mixed solution of ethyl alcohol and nitric acid to solid product.
Under normal temperature conditions, the poriferous titanium dioxide of the sodium hydrogen telluride of 45mg, 180mg are add to deionized water, magnetic
Power stirs 20min；Then the cadmium acetate of 70mg, the mercaptopropionic acid ultrasonic disperse 10min of 55mg is added, obtains mass concentration and exists
6.4% titanium dioxide composite photocatalyst suspension.
Under 400 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, doughnut is obtained, is then changing
It learns in crosslinking device, oxygen, which is added, makes it react 30min at 60 DEG C.Doughnut is washed, removes the impurity on surface, so
First impregnate 10min in an acidic solution afterwards, washing to neutrality then proceedes to impregnate 10min in alkaline solution, washs into
Property, it is then carbonized 2 hours in 2600 DEG C of graphitizing furnace, obtains hollow carbon fiber carrier.
By hollow carbon fiber carrier impregnation in titanium dioxide composite photocatalyst suspension 40min, lifting come out after
110 DEG C of dry 120min；Continue the hollow carbon fiber carrier impregnation after drying in titanium dioxide composite photocatalyst suspension
Middle 10min obtains composite photocatalyst material in 110 DEG C of dry 70min after lifting out.
Degradation test is carried out in closed space PARA FORMALDEHYDE PRILLS(91,95) and toluene, controls 22 DEG C of environment temperature, gas flow rate 1.5m/s,
Envionmental humidity is 45%, initial concentration of formaldehyde 5mg/m3, the initial concentration of toluene is 0.7mg/m3, it can be found that：
Concentration of formaldehyde is stablized after 50min, and formaldehyde gas degradation rate reaches 96.1%, and after 70min, toluene concentration reaches
Stablize, degradation of toluene rate reaches 84%.
Comparative example 1
Under normal temperature conditions, the titanium dioxide of 200mg is add to deionized water, magnetic agitation 20min；Obtain quality
Concentration is in 6% titanium dioxide optical catalyst suspension.
Under 400 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, doughnut is obtained, is then changing
It learns in crosslinking device, oxygen, which is added, makes it react 30min at 60 DEG C.Doughnut is washed, removes the impurity on surface, so
First impregnate 10min in an acidic solution afterwards, washing to neutrality then proceedes to impregnate 10min in alkaline solution, washs into
Property, it is then carbonized 2 hours in 2600 DEG C of graphitizing furnace, obtains hollow carbon fiber carrier.
The aluminium hydroxide of 40mg is added into the orthophosphoric acid of 100mL, ortho-phosphoric mass fraction is 85%, is heated to 70
DEG C~85 DEG C, binder is obtained after being stirred 20min.
By hollow carbon fiber carrier impregnation 5min in a binder, in 90~100 DEG C of dryings after then lifting comes out
10min；Continue the 40min in titanium dioxide optical catalyst suspension of the hollow carbon fiber carrier impregnation after drying, lifts out
In 110 DEG C of dry 120min after coming；Continue the hollow carbon fiber carrier impregnation after drying in titanium dioxide composite photocatalyst
10min in suspension obtains composite photocatalyst material in 110 DEG C of dry 70min after lifting out.
Degradation test is carried out in closed space PARA FORMALDEHYDE PRILLS(91,95) and toluene, controls 22 DEG C of environment temperature, gas flow rate 1.5m/s,
Envionmental humidity is 45%, initial concentration of formaldehyde 5mg/m3, the initial concentration of toluene is 0.7mg/m3, it can be found that：
Concentration of formaldehyde is stablized after 100min, and formaldehyde gas degradation rate reaches 84.7%.After 120min, toluene concentration reaches
To stabilization, degradation of toluene rate reaches 69.7%.
Comparative example 2
Under normal temperature conditions, the titanium dioxide of the sodium hydrogen telluride of 40mg, 200mg are add to deionized water, magnetic force stirs
Mix 20min；Then the cadmium acetate of 80mg, the mercaptopropionic acid ultrasonic disperse 10min of 50mg is added, obtains mass concentration 6% 2
Titanium oxide composite photo-catalyst suspension.
Commercially available carbon fiber is provided as carrier (STF-1000T type, Jiangsu Sutong Carbon Fiber Co., Ltd).
The aluminium hydroxide of 40mg is added into the orthophosphoric acid of 100mL, ortho-phosphoric mass fraction is 85%, is heated to 70
DEG C~85 DEG C, binder is obtained after being stirred 20min.
By carrier impregnation 5min in a binder, in 90~100 DEG C of dry 10min after then lifting comes out；Continue to do
Carrier impregnation after the dry 40min in titanium dioxide composite photocatalyst suspension, lifting come out after in 110 DEG C of dryings
120min；Continue the carrier impregnation after drying the 10min in titanium dioxide composite photocatalyst suspension, lifting come out after
110 DEG C of dry 70min obtain composite photocatalyst material.
Degradation test is carried out in closed space PARA FORMALDEHYDE PRILLS(91,95) and toluene, controls 22 DEG C of environment temperature, gas flow rate 1.5m/s,
Envionmental humidity is 45%, initial concentration of formaldehyde 5mg/m3, the initial concentration of toluene is 0.7mg/m3, it can be found that：
Concentration of formaldehyde is stablized after 90min, and formaldehyde gas degradation rate reaches 86.2%.After 120min, toluene concentration reaches
To stabilization, degradation of toluene rate reaches 73.4%.
It is compared with comparative example 1-2 it is found that the Degradation Formaldehyde effect and degradation of toluene rate of embodiment 1 are obviously high by embodiment 1
In documents 1 and documents 2.
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
Claims (7)
1. a kind of preparation method of porous titanium dioxide photocatalysis material, which is characterized in that including：
(1), the lauryl amine of 3~7 parts by weight is added in absolute ethanol solution, is configured to the solution of 3.5~6mmol/L, so
The butyl carbonate of 1.2~2 parts by weight is added afterwards, is stirred 10~60min.Heating 10~36 is small under the conditions of 100~120 DEG C
When, reaction product centrifugation obtains solid product, is then cleaned using the mixed solution of ethyl alcohol and nitric acid to solid product more
It is secondary, poriferous titanium dioxide is obtained after dry；
(2), poriferous titanium dioxide is added into deionized water, is configured to concentration and suspends in 5~7% titanium deoxide catalysts
Liquid；
(3), hollow carbon fiber carrier is prepared；
(4), by hollow carbon fiber carrier impregnation, 20~60min, lifting are come out in titanium dioxide composite photocatalyst suspension
Afterwards in 90~120 DEG C of dry 60~120min；Continue the hollow carbon fiber carrier impregnation after drying in optically catalytic TiO 2
10~60min in agent suspension obtains porous titanium dioxide photocatalysis in 60~120 DEG C of dry 30~90min after lifting out
Material.
2. the preparation method of porous titanium dioxide photocatalysis material according to claim 1, which is characterized in that step (2)
Including：Under normal temperature conditions, sodium hydrogen telluride, poriferous titanium dioxide are add to deionized water, 10~30min of magnetic agitation；
Then cadmium acetate, mercaptopropionic acid 10~30min of ultrasonic disperse is added, obtains titanium deoxide catalyst suspension.
3. the preparation method of porous titanium dioxide photocatalysis material according to claim 2, which is characterized in that the tellurium hydrogen
The weight ratio for changing sodium and poriferous titanium dioxide is (30~50)：(150~200).
4. the preparation method of porous titanium dioxide photocatalysis material according to claim 2, which is characterized in that the acetic acid
The weight ratio of cadmium and mercaptopropionic acid is (60~80)：(50~60).
5. the preparation method of porous titanium dioxide photocatalysis material according to claim 1, which is characterized in that titanium dioxide
Catalyst suspension mass concentration is 6.4%.
6. the preparation method of porous titanium dioxide photocatalysis material according to claim 1, which is characterized in that step (3)
Including：
Under 370~450 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, doughnut is obtained, is then changing
It learns in crosslinking device, oxygen, which is added, makes it react 20~30min at 50~60 DEG C, washs to doughnut, removes surface
Impurity, then first impregnate 8~15min in an acidic solution, washing to neutrality, then proceed to impregnate 10 in alkaline solution~
20min is washed to neutrality, is then carbonized 1~3 hour in 2500~2800 DEG C of graphitizing furnace.
7. a kind of preparation method of porous titanium dioxide photocatalysis material, which is characterized in that including：
(1), the lauryl amine of 3 parts by weight is added in absolute ethanol solution, is configured to the solution of 4mmol/L, is then added 1.5
The butyl carbonate of parts by weight, is stirred 20min, heats 16 hours under the conditions of 100 DEG C, and reaction product centrifugation obtains solid and produces
Then object clean repeatedly, obtains poriferous titanium dioxide after dry using the mixed solution of ethyl alcohol and nitric acid to solid product；
(2), the poriferous titanium dioxide of the sodium hydrogen telluride of 45 parts by weight, 180 parts by weight under normal temperature conditions, is added to deionization
In water, magnetic agitation 20min；Then the cadmium acetate of 70 parts by weight, the mercaptopropionic acid ultrasonic disperse 10min of 55 parts by weight is added,
Mass concentration is obtained in 6.4% titanium dioxide composite photocatalyst suspension；
(3), under 400 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, doughnut is obtained, is then changing
It learns in crosslinking device, oxygen, which is added, makes it react 30min at 60 DEG C, washs to doughnut, removes the impurity on surface, so
First impregnate 10min in an acidic solution afterwards, washing to neutrality then proceedes to impregnate 10min in alkaline solution, washs into
Property, it is then carbonized 2 hours in 2600 DEG C of graphitizing furnace, obtains hollow carbon fiber carrier；
(4), by hollow carbon fiber carrier impregnation in titanium dioxide composite photocatalyst suspension 40min, lifting come out after
110 DEG C of dry 120min；Continue the hollow carbon fiber carrier impregnation after drying in titanium dioxide composite photocatalyst suspension
Middle 10min obtains composite photocatalyst material in 110 DEG C of dry 70min after lifting out.
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