CN108906017A - The preparation method of catalysis material for air cleaning - Google Patents
The preparation method of catalysis material for air cleaning Download PDFInfo
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- CN108906017A CN108906017A CN201810681422.8A CN201810681422A CN108906017A CN 108906017 A CN108906017 A CN 108906017A CN 201810681422 A CN201810681422 A CN 201810681422A CN 108906017 A CN108906017 A CN 108906017A
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- titanium dioxide
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- air cleaning
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- 239000000463 material Substances 0.000 title claims abstract description 27
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000011941 photocatalyst Substances 0.000 claims abstract description 27
- 239000000725 suspension Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 25
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005470 impregnation Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- 239000010936 titanium Substances 0.000 claims abstract description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 24
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 13
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 235000012489 doughnuts Nutrition 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- 238000009987 spinning Methods 0.000 claims description 12
- 238000013019 agitation Methods 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-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
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910000059 tellane Inorganic materials 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical class [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 claims 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 45
- 230000015556 catabolic process Effects 0.000 abstract description 11
- 238000006731 degradation reaction Methods 0.000 abstract description 11
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 9
- 229910001868 water Inorganic materials 0.000 abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920002866 paraformaldehyde Polymers 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000746 purification Methods 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
- 238000004887 air purification Methods 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 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
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007254 oxidation reaction 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
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- B01J35/39—
-
- B01J35/58—
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
This application discloses a kind of preparation methods of catalysis material for air cleaning, including：(1), modifying titanium dioxide is prepared；(3), using modificationization titanium as raw material, mass concentration is prepared in 6%~8% titanium dioxide composite photocatalyst suspension；(4), hollow carbon fiber carrier is prepared；(5), by hollow carbon fiber carrier impregnation in titanium dioxide composite photocatalyst suspension 20~40min, lifting come out after in 90~110 DEG C of dry 90~120min；Continue the 10~30min in titanium dioxide composite photocatalyst suspension of the hollow carbon fiber carrier impregnation after drying, in 90~120 DEG C of dry 50~100min after lifting out, obtains the catalysis material for being used for air cleaning.Its Formaldehyde decomposition speed of material of the invention is fast, and degradation rate is high, and formaldehyde gas degradation rate can reach 95.3%, and photocatalytic water hydrogen-producing speed is up to 43.5mmol/h/g.
Description
Technical field
This application involves technical field of air purification, more particularly to a kind of system of catalysis material for air cleaning
Preparation 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
It is existing to overcome the purpose of the present invention is to provide a kind of preparation method of catalysis material for air cleaning
Deficiency in technology.
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 catalysis material for air cleaning, including：
(1), by titania powder and phenol according to 1:0.8~2 weight ratio is blended in potassium hydroxide solution, and magnetic force stirs
Mix and carry out hydro-thermal reaction after 10~30min, 120~180 DEG C of reaction temperature, the reaction time 20~70 hours, potassium hydroxide it is dense
Degree is 4~8mol/L；
(2), reaction product and benzyl carbinol are according to 1:0.8~2 weight ratio be added in nitric acid solution be mixed 10~
The concentration of 30min, nitric acid solution are 0.3~0.7mol/L, then solid matter with deionized water is washed to neutrality, then 60
Dry 10~30min, is finally heat-treated 4~10 hours under 700~1000 DEG C of high temperature under the conditions of~100 DEG C, obtains modified two
Titanium oxide；
(3), using modificationization titanium as raw material, preparation mass concentration suspends in 6%~8% titanium dioxide composite photocatalyst
Liquid；
(4), hollow carbon fiber carrier is prepared；
(5), 20~40min, lifting in titanium dioxide composite photocatalyst suspension by hollow carbon fiber carrier impregnation
In 90~110 DEG C of dry 90~120min after out；Continue the hollow carbon fiber carrier impregnation after drying to answer in titanium dioxide
10~30min in light combination catalyst suspension is obtained in 90~120 DEG C of dry 50~100min after lifting out and is used for air
The catalysis material of purification.
Preferably, in the preparation method of the above-mentioned catalysis material for air cleaning, step (3) includes：
Under normal temperature conditions, by the sodium hydrogen telluride of 50~70 parts by weight, the modifying titanium dioxide of 1500~1800 parts by weight
It is add to deionized water, 10~30min of magnetic agitation, obtains the first mixed solution；
Under normal temperature conditions, by the mercaptopropionic acid of the cadmium acetate of 50~70 parts by weight, 50~80 parts by weight be added to from
10~30min of ultrasonic disperse in sub- water obtains the second mixed solution；
Second mixed solution is added into the first mixed solution, is heated to 70~100 DEG C, 20~60min is mixed,
Obtain titanium dioxide composite photocatalyst suspension.
Preferably, in the preparation method of the above-mentioned catalysis material for air cleaning, titanium dioxide complex light is urged
Agent suspension concentration is 7.5%.
Preferably, in the preparation method of the above-mentioned catalysis material for air cleaning, step (4) 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 catalysis material for air cleaning, including：
By titania powder and phenol according to 1:1.5 weight ratios are blended in potassium hydroxide solution, magnetic agitation 10min
After carry out hydro-thermal reaction, 160 DEG C of reaction temperature, the reaction time 36 hours, the concentration of potassium hydroxide was 5mol/L, reaction product and
Benzyl carbinol is according to 1:1.5 weight ratios, which are added in nitric acid solution, is mixed 30min, and the concentration of nitric acid solution is 0.3mol/L,
Solid matter with deionized water is washed to neutrality again, 20min is then dried under the conditions of 80 DEG C, finally under 800 DEG C of high temperature
Heat treatment 6 hours obtains modifying titanium dioxide；
Under normal temperature conditions, by the modifying titanium dioxide of the sodium hydrogen telluride of 50 parts by weight, 1700 parts by weight be added to from
In sub- water, magnetic agitation 20min obtains the first mixed solution；
Under normal temperature conditions, the mercaptopropionic acid of the cadmium acetate of 60 parts by weight, 70 parts by weight is add to deionized water super
Sound disperses 10min, obtains the second mixed solution；
Second mixed solution is added into the first mixed solution, is heated to 80 DEG C, 20min is mixed, obtains quality
Concentration is in 7.5% 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, 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；
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 the catalysis material for being used for air cleaning in 110 DEG C of dry 70min after lifting out.With prior art phase
Than, the advantage of the invention is that：Its Formaldehyde decomposition speed of material of the invention is fast, and degradation rate is high, and formaldehyde gas degradation rate can
Reach 95.3%, photocatalytic water hydrogen-producing speed is up to 43.5mmol/h/g.
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
By titania powder and phenol according to 1:1.5 weight ratios are blended in potassium hydroxide solution, magnetic agitation 10min
After carry out hydro-thermal reaction, 160 DEG C of reaction temperature, the reaction time 36 hours, the concentration of potassium hydroxide was 5mol/L.Reaction product and
Benzyl carbinol is according to 1:1.5 weight ratios, which are added in nitric acid solution, is mixed 30min, and the concentration of nitric acid solution is 0.3mol/L.
Solid matter with deionized water is washed to neutrality again, 20min is then dried under the conditions of 80 DEG C.Finally under 800 DEG C of high temperature
Heat treatment 6 hours obtains modifying titanium dioxide.
Under normal temperature conditions, the modifying titanium dioxide of the sodium hydrogen telluride of 50mg, 1700mg are add to deionized water, magnetic
Power stirs 20min, obtains the first mixed solution；
Under normal temperature conditions, the mercaptopropionic acid of the cadmium acetate of 60mg, 70mg are add to deionized water ultrasonic disperse
10min obtains the second mixed solution.
Second mixed solution is slowly added into the first mixed solution, is heated to 80 DEG C, 20min is mixed, is obtained
Mass concentration is in 7.5% 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), controls 22 DEG C of environment temperature, gas flow rate 1.5m/s, environment phase
To humidity 45%, initial concentration of formaldehyde 5mg/m3.It can be found that：
Concentration of formaldehyde is stablized after 55min, and formaldehyde gas degradation rate reaches 95.3%.
Moreover, photocatalytic water hydrogen-producing speed is up under the AM 1.5G simulated solar irradiation irradiation of 1 sun intensity
43.5mmol/h/g。
Comparative example 1
Under normal temperature conditions, the commercially available titanium dioxide of 200mg is add to deionized water, magnetic agitation 20min；It obtains
Mass concentration is in 7.5% 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.
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), controls 22 DEG C of environment temperature, gas flow rate 1.5m/s, environment phase
To humidity 45%, initial concentration of formaldehyde 5mg/m3.It can be found that：
Concentration of formaldehyde is stablized after 100min, and formaldehyde gas degradation rate reaches 85.1%.
Under the AM 1.5G simulated solar irradiation irradiation of 1 sun intensity, photocatalytic water hydrogen-producing speed is 8.1mmol/h/g.
Comparative example 2
By titania powder and phenol according to 1:1.5 weight ratios are blended in potassium hydroxide solution, magnetic agitation 10min
After carry out hydro-thermal reaction, 160 DEG C of reaction temperature, the reaction time 36 hours, the concentration of potassium hydroxide was 5mol/L.Reaction product and
Benzyl carbinol is according to 1:1.5 weight ratios, which are added in nitric acid solution, is mixed 30min, and the concentration of nitric acid solution is 0.3mol/L.
Solid matter with deionized water is washed to neutrality again, 20min is then dried under the conditions of 80 DEG C.Finally under 800 DEG C of high temperature
Heat treatment 6 hours obtains modifying titanium dioxide.
Under normal temperature conditions, the modifying titanium dioxide of the sodium hydrogen telluride of 50mg, 1700mg are add to deionized water, magnetic
Power stirs 20min, obtains the first mixed solution；
Under normal temperature conditions, the mercaptopropionic acid of the cadmium acetate of 60mg, 70mg are add to deionized water ultrasonic disperse
10min obtains the second mixed solution.
Second mixed solution is slowly added into the first mixed solution, is heated to 80 DEG C, 20min is mixed, is obtained
Mass concentration is in 7.5% titanium dioxide composite photocatalyst suspension.
Commercially available carbon fiber is provided as carrier (STF-1000T type, Jiangsu Sutong Carbon Fiber Co., Ltd).
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), controls 22 DEG C of environment temperature, gas flow rate 1.5m/s, environment phase
To humidity 45%, initial concentration of formaldehyde 5mg/m3.It can be found that：
Concentration of formaldehyde is stablized after 70min, and formaldehyde gas degradation rate reaches 92.3%.
Moreover, photocatalytic water hydrogen-producing speed is up under the AM 1.5G simulated solar irradiation irradiation of 1 sun intensity
38.3mmol/h/g。
It is compared with comparative example 1-2 it is found that the Degradation Formaldehyde effect and photocatalytic water hydrogen-producing speed of embodiment 1 are bright by embodiment 1
It is aobvious to be higher than 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 (5)
1. a kind of preparation method of the catalysis material for air cleaning, which is characterized in that including：
(1), by titania powder and phenol according to 1:0.8~2 weight ratio is blended in potassium hydroxide solution, magnetic agitation 10
Hydro-thermal reaction is carried out after~30min, 120~180 DEG C of reaction temperature, the reaction time 20~70 hours, the concentration of potassium hydroxide was 4
~8mol/L；
(2), reaction product and benzyl carbinol are according to 1:0.8~2 weight ratio is added to 10~30min of mixing in nitric acid solution,
The concentration of nitric acid solution is 0.3~0.7mol/L, then solid matter with deionized water is washed to neutrality, then 60~100
Dry 10~30min, is finally heat-treated 4~10 hours under 700~1000 DEG C of high temperature under the conditions of DEG C, obtains modified titanium dioxide
Titanium；
(3), using modificationization titanium as raw material, mass concentration is prepared in 6%~8% titanium dioxide composite photocatalyst suspension；
(4), hollow carbon fiber carrier is prepared；
(5), by hollow carbon fiber carrier impregnation, 20~40min, lifting are come out in titanium dioxide composite photocatalyst suspension
Afterwards in 90~110 DEG C of dry 90~120min；Continue the hollow carbon fiber carrier impregnation after drying in titanium dioxide complex light
10~30min in catalyst suspension is obtained in 90~120 DEG C of dry 50~100min after lifting out and is used for air cleaning
Catalysis material.
2. the preparation method of the catalysis material according to claim 1 for air cleaning, which is characterized in that step
(3) include：
Under normal temperature conditions, the modifying titanium dioxide of the sodium hydrogen telluride of 50~70 parts by weight, 1500~1800 parts by weight is added
Into deionized water, 10~30min of magnetic agitation obtains the first mixed solution；
Under normal temperature conditions, the mercaptopropionic acid of the cadmium acetate of 50~70 parts by weight, 50~80 parts by weight is added to deionized water
Middle 10~30min of ultrasonic disperse obtains the second mixed solution；
Second mixed solution is added into the first mixed solution, is heated to 70~100 DEG C, 20~60min is mixed, is obtained
Titanium dioxide composite photocatalyst suspension.
3. the preparation method of the catalysis material according to claim 1 for air cleaning, which is characterized in that titanium dioxide
Titanium composite photo-catalyst suspension concentration is 7.5%.
4. the preparation method of the catalysis material according to claim 1 for air cleaning, which is characterized in that step
(4) include：
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.
5. a kind of preparation method of the catalysis material for air cleaning, which is characterized in that including：
By titania powder and phenol according to 1:1.5 weight ratios are blended in potassium hydroxide solution, and magnetic agitation 10min is laggard
Row hydro-thermal reaction, 160 DEG C of reaction temperature, the reaction time 36 hours, the concentration of potassium hydroxide was 5mol/L, reaction product and benzene second
Alcohol is according to 1:1.5 weight ratios, which are added in nitric acid solution, is mixed 30min, and the concentration of nitric acid solution is 0.3mol/L, then will
Solid matter with deionized water is washed to neutrality, 20min is then dried under the conditions of 80 DEG C, finally under 800 DEG C of high temperature at heat
Reason 6 hours obtains modifying titanium dioxide；
Under normal temperature conditions, the modifying titanium dioxide of the sodium hydrogen telluride of 50 parts by weight, 1700 parts by weight is added to deionized water
In, magnetic agitation 20min obtains the first mixed solution；
Under normal temperature conditions, the mercaptopropionic acid of the cadmium acetate of 60 parts by weight, 70 parts by weight is add to deionized water ultrasound point
10min is dissipated, the second mixed solution is obtained；
Second mixed solution is added into the first mixed solution, is heated to 80 DEG C, 20min is mixed, obtains mass concentration
In 7.5% titanium dioxide composite photocatalyst suspension；
Under 400 DEG C of hot conditions, spinning is carried out to polyacrylonitrile by spinning machine, obtains doughnut, is then handed in chemistry
Join in device, oxygen, which is added, makes it react 30min at 60 DEG C, washs to doughnut, removes the impurity on surface, then first
10min is impregnated in an acidic solution, and washing to neutrality then proceedes to impregnate 10min in alkaline solution, washing to neutrality, so
It is carbonized 2 hours in 2600 DEG C of graphitizing furnace afterwards, obtains hollow carbon fiber carrier；
By hollow carbon fiber carrier impregnation in titanium dioxide composite photocatalyst suspension 40min, lifting come out after at 110 DEG C
Dry 120min；Continue the hollow carbon fiber carrier impregnation after drying in titanium dioxide composite photocatalyst suspension
10min obtains the catalysis material for being used for air cleaning in 110 DEG C of dry 70min after lifting out.
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| CN115212874A (en) * | 2022-08-16 | 2022-10-21 | 深圳市康弘智能健康科技股份有限公司 | Preparation method of improved photocatalytic material for catalytic purification of formaldehyde by visible light |
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| CN108048957A (en) * | 2017-12-26 | 2018-05-18 | 宜兴市天宇世纪高新科技有限公司 | A kind of preparation process of the activated carbon fiber of hollow structure |
| CN108067267A (en) * | 2017-12-19 | 2018-05-25 | 中国计量大学 | A kind of visible light-responded cadmium telluride/titanium dioxide Z-type photochemical catalyst and its preparation method and application |
| CN108201789A (en) * | 2017-12-19 | 2018-06-26 | 如皋六维环境科技有限公司 | A kind of preparation method of purifying formaldehyde material and application |
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| CN108201789A (en) * | 2017-12-19 | 2018-06-26 | 如皋六维环境科技有限公司 | A kind of preparation method of purifying formaldehyde material and application |
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| CN115212874A (en) * | 2022-08-16 | 2022-10-21 | 深圳市康弘智能健康科技股份有限公司 | Preparation method of improved photocatalytic material for catalytic purification of formaldehyde by visible light |
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