CN108786821A - A kind of preparation method of photocatalyst - Google Patents
A kind of preparation method of photocatalyst Download PDFInfo
- Publication number
- CN108786821A CN108786821A CN201710297048.7A CN201710297048A CN108786821A CN 108786821 A CN108786821 A CN 108786821A CN 201710297048 A CN201710297048 A CN 201710297048A CN 108786821 A CN108786821 A CN 108786821A
- Authority
- CN
- China
- Prior art keywords
- photocatalyst
- preparation
- quality
- parts
- ethanol solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000006185 dispersion Substances 0.000 claims abstract description 17
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 12
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 12
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims abstract description 11
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 11
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 238000005660 chlorination reaction Methods 0.000 claims 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 8
- 238000000354 decomposition reaction Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 32
- 235000019441 ethanol Nutrition 0.000 description 16
- 239000004408 titanium dioxide Substances 0.000 description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 description 10
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 7
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 7
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 206010001497 Agitation Diseases 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to catalyst preparation technical fields, disclose a kind of preparation method of photocatalyst, including：Titanium tetrachloride, cerous nitrate, iron chloride and polyvinylpyrrolidone are dispersed in ethanol solution, obtain disperseing molten sample；The molten sample of dispersion is placed in heated sealed in the liner of hydrothermal reaction kettle to react；Mixture after heating is reacted again centrifuges to obtain solid crystal, cleans the solid crystal with ethanol solution, obtains presoma；The presoma is put into Muffle furnace and is heat-treated, photocatalyst powder is obtained after cooling；The preparation method preparation process of the photocatalyst of decomposing automobile exhaust provided in an embodiment of the present invention is simple, prepares raw material and easily obtains, and preparation condition is easily realized, and low energy consumption for preparation process；The photocatalyst being prepared by the preparation method is high to the absorptivity of visible light, has high light-initiated rate and high catalytic activity, can efficient-decomposition vehicle exhaust.
Description
Technical field
The present invention relates to catalyst preparation technical fields, specifically, being related to a kind of preparation method of photocatalyst.
Background technology
Photocatalyst is a kind of general name of the semi-conducting material with photo-catalysis function, it is coated on substrate surface, in light
Under effect, strong catalytic degradation function is generated, toxic and harmful gas and various bacteria, and energy are killed in the air that can effectively degrade
The toxin that bacterium releases is resolved into innocuous substance；General photocatalyst is also equipped with except work(such as formaldehyde, deodorization, anti-pollutions simultaneously
Energy.
Titanium dioxide is used as most representative photocatalyst, photocatalyst of titanium dioxide to possess that cheap, light excitability is strong
The advantages that, but the excitation of spectra of photocatalyst of titanium dioxide is shorter, and catalytic degradation effect can only be played by ultraviolet excitation, and
And photocatalyst of titanium dioxide is poor to the photodegradation ability of carbon monoxide, nitrogen oxides in vehicle exhaust, disadvantage mentioned above is direct
Constrain development of the photocatalyst of titanium dioxide on vehicle maintenance service.
Invention content
The present invention provides a kind of preparation method of photocatalyst, it is therefore an objective to a kind of novel photocatalyst is prepared, it is existing to solve
The problem that the photocatalyst excitation of spectra is shorter, vehicle exhaust capacity of decomposition is poor.
In order to solve the above-mentioned technical problem, an embodiment of the present invention provides a kind of preparation method of photocatalyst, including it is following
Step：
Titanium tetrachloride, cerous nitrate, iron chloride and polyvinylpyrrolidone are dispersed in ethanol solution, obtain disperseing molten
Sample；
The molten sample of dispersion is placed in heated sealed in the liner of hydrothermal reaction kettle to react；Mixing after heating is reacted again
Object centrifuges to obtain solid crystal, cleans the solid crystal with ethanol solution, obtains presoma；
The presoma is put into Muffle furnace and is heat-treated, photocatalyst powder is obtained after cooling.
Further, described that titanium tetrachloride, cerous nitrate, iron chloride and polyvinylpyrrolidone are dispersed in ethanol solution
In, obtain disperseing molten sample be specially：By the titanium tetrachloride of 14-15 parts of quality, the cerous nitrate of 13-16 parts of quality, 4-6 parts of quality
Iron chloride and the polyvinylpyrrolidone of 1-3 parts of quality are dispersed in the ethanol solution of 60-70 parts of quality, obtain the dispersion
Molten sample.
Further, it is placed in the liner of hydrothermal reaction kettle before heated sealed reaction by the molten sample of dispersion, it will be described
Liner was placed in chloroazotic acid after 3 hours, is cleaned and is dried using deionized water.
Further, the solid crystal is cleaned with ethanol solution, at least cleaned three times.
Further, the temperature of the hydrothermal reaction kettle heated sealed is 170-250 DEG C, and heating time is that 16-24 is small
When.
Further, the heat treatment temperature is 500-700 DEG C, and heat treatment time is 1-3 hours.
As a kind of alternative of the embodiment of the present invention, the step further includes：The light of 1.5-5 parts of quality is touched
Matchmaker's powder is placed in the water of 95-98 parts of quality the dispersant for disperseing, and 1-2 parts of quality being added, and photocatalyst solution is prepared.
Compared with prior art, the preparation method of the photocatalyst of decomposing automobile exhaust provided in an embodiment of the present invention, have with
Lower advantageous effect：
1, preparation process is simple；
2, it prepares raw material easily to obtain, preparation condition is easily realized, and low energy consumption for preparation process；
3, the photocatalyst being prepared is high to the absorptivity of visible light, has high light-initiated rate and high catalytic activity, can be high
Imitate decomposing automobile exhaust.
Description of the drawings
The step of Fig. 1 is the preparation method of the photocatalyst of decomposing automobile exhaust provided in an embodiment of the present invention is schemed；
Fig. 2 is the X-ray diffractogram of photocatalyst powder provided in an embodiment of the present invention；
Fig. 3 is the micro- electron microscope of photocatalyst powder provided in an embodiment of the present invention；
Fig. 4 is the design sketch of photocatalyst oxygenolysis carbon monoxide provided in an embodiment of the present invention；
Fig. 5 is the design sketch of photocatalyst oxygenolysis nitrogen dioxide provided in an embodiment of the present invention.
Specific implementation mode
To facilitate the understanding of the present invention, the present invention is described comprehensively below with reference to relevant drawings.It is provided in attached drawing
Presently preferred embodiments of the present invention.But there are many different forms to realize by the present invention, however it is not limited to reality described herein
Apply example.On the contrary, it is to make the disclosure of the present invention more thorough and comprehensive to be supplied to the purpose of these embodiments.
Unless otherwise defined, the technology people of technical and scientific term used herein and the technical field for belonging to the present invention
The normally understood meaning of member is identical.Implement herein then for description is specific in the category used in the description of the present invention
The purpose of example, it is not intended that in the limitation present invention.
Refering to fig. 1, scheme for the step of preparation method of the photocatalyst of decomposing automobile exhaust provided in an embodiment of the present invention,
In embodiment of the present invention：
The preparation method of the photocatalyst of decomposing automobile exhaust provided in an embodiment of the present invention includes the following steps：
S1. the molten sample of dispersion is prepared：It is molten that titanium tetrachloride, cerous nitrate, iron chloride and polyvinylpyrrolidone are dispersed in ethyl alcohol
In liquid, obtain disperseing molten sample；Specifically, by the titanium tetrachloride of 14-15 mass ratioes, the cerous nitrate of 13-16 mass ratioes, 4-6 mass
The iron chloride of ratio, the polyvinylpyrrolidone of 1-3 mass ratioes are placed in the ethanol solution of 60-70 mass ratioes and stir evenly, and make it
It is fully dispersed in ethanol solution, obtain the molten sample of the dispersion；
S2. presoma is prepared：The molten sample of dispersion obtained in step S1 is placed in heated sealed in the liner of hydrothermal reaction kettle
Reaction；Mixture after heating is reacted again centrifuges to obtain solid crystal, the solid crystal is cleaned with ethanol solution, before obtaining
Drive body；Hydrothermal reaction kettle before the use, its liner is placed in chloroazotic acid 3 hours, chloroazotic acid is made fully to dissolve in hydrothermal reaction kettle
The impurity of lining prevents impurity to be introduced in subsequent hydro-thermal reaction, is dried after being used in combination deionized water to clean the liner；
Specifically, after the molten sample of dispersion is placed in the liner of hydrothermal reaction kettle, hydrothermal reaction kettle described in banding simultaneously carries out it close
The temperature of envelope heating, heating is 170-250 DEG C, and continuous heating 16-24 hours makes the substance in the molten sample of dispersion fully react, and
Mixture in hydrothermal reaction kettle liner after reaction is centrifuged, until the mixture is divided into upper liquid level and sinks
The solid layer at bottom, and until the thickness of solid layer is not further added by；A layer solid is removed, ethanol solution is used in combination to wash in the solid
The impurity (cleaning at least three times) for having neither part nor lot in reaction, obtains the presoma of photocatalyst, and presoma at this time is in idiozome shape
Solid；
S3. photocatalyst powder is prepared：The presoma being prepared in S2 is put into Muffle furnace and is heat-treated, after cooling
Obtain photocatalyst powder；Specifically, the temperature of heat treatment is 500-700 DEG C, heat treatment time is 1-3 hours, is heat-treated it
The solid powder that postcooling obtains is photocatalyst powder.
The photocatalyst powder that is prepared by above-mentioned S1-S3 steps is more unstable under surroundings, is not easy to preserve
With use, so in embodiments of the present invention, the photocatalyst powder obtained in step S3 is placed in water dispersion, and dispersion is added
Agent, to prepare photocatalyst solution that is easy to use and preserving, specifically, the photocatalyst powder of 1.5-5 mass ratioes is placed in
Disperse in the water of 95-98 mass ratioes, and the dispersant of 1-2 mass ratioes is added, obtains photocatalyst solution, point used herein arrived
There are many optional type of powder, such as common water paint dispersant 5040, waterborne pigment dispersant 5042 etc..
As a kind of embodiment of the present invention, by the titanium tetrachloride of 14 parts of quality, the cerous nitrate of 13 parts of quality, 4 parts of quality
Iron chloride and 1 part of quality polyvinylpyrrolidone be dispersed in the ethanol solution of 60 parts of quality be uniformly mixing to obtain dispersion it is molten
Sample；The liner of hydrothermal reaction kettle is placed in chloroazotic acid 3 hours again, is dried after being used in combination deionized water to clean 2 times；It again will be described
Disperse molten sample to be placed in hydrothermal reaction kettle liner, and liner is placed in banding in kettle, sealing, hydrothermal reaction kettle is heated to 170
DEG C, it reacts 16 hours；Mixture is centrifuged after the completion of reaction, removes a layer solid crystal, is cleaned 3 times with ethyl alcohol, obtains presoma；
The presoma is put into Muffle furnace and carries out Post isothermal treatment, heat treatment temperature is 500 DEG C, and heat treatment time is 1 hour, cold
But photocatalyst powder is obtained afterwards.To be easy to preserve and use, the photocatalyst powder of 1.5 parts of quality is placed in the water of 95 parts of quality
Dispersion, and the water paint dispersant 5040 of 1 part of quality is added, you can the photocatalyst decomposed suitable for vehicle exhaust is prepared
Solution.
As another embodiment of the present invention, by the titanium tetrachloride of 15 parts of quality, the cerous nitrate of 16 parts of quality, 6 parts of quality
Iron chloride and the polyvinylpyrrolidones of 3 parts of quality be dispersed in the ethanol solution of 70 parts of quality and stir evenly, disperseed
Molten sample；The liner of hydrothermal reaction kettle is placed in chloroazotic acid 3 hours, is dried after being used in combination deionized water to clean 2 times；It will be described point
It dissipates molten sample to be placed in hydrothermal reaction kettle liner, and liner is placed in banding in kettle, sealing, hydrothermal reaction kettle is heated to 250 DEG C,
Reaction 24 hours；Mixture is centrifuged after the completion of reaction, removes a layer solid crystal, is cleaned 3 times with ethyl alcohol, obtains presoma.It will
The presoma, which is put into Muffle furnace, carries out Post isothermal treatment, and heat treatment temperature is 700 DEG C, and heat treatment time is 3 hours, cooling
After obtain photocatalyst powder.To be easy to preserve and use, the photocatalyst powder of 5 parts of quality is placed in the water of 98 parts of quality and is divided
It dissipates, and 2 parts of quality waterborne pigment dispersants 5042 is added, you can it is molten that the photocatalyst decomposed suitable for vehicle exhaust is prepared
Liquid.
As another embodiment of the present invention, by the titanium tetrachloride of 15 parts of quality, the cerous nitrate of 15 parts of quality, 5 parts of quality
Iron chloride and the polyvinylpyrrolidones of 2 parts of quality be dispersed in the ethanol solution of 65 parts of quality and stir evenly, disperseed
Molten sample；The liner of hydrothermal reaction kettle is placed in chloroazotic acid 3 hours, is dried after being used in combination deionized water to clean 2 times；It will be described point
It dissipates molten sample to be placed in inner liner of reaction kettle, and liner is placed in banding in kettle, sealing, hydrothermal reaction kettle is heated to 200 DEG C, reaction
20 hours；Mixture is centrifuged after the completion of reaction, removes a layer solid crystal, is cleaned 3 times with ethyl alcohol, obtains presoma；It will be described
Presoma, which is put into Muffle furnace, carries out Post isothermal treatment, and heat treatment temperature is 600 DEG C, and heat treatment time is 2 hours, is obtained after cooling
To solid powder.To be easy to preserve and use, the powder of 3 parts of quality is placed in the water of 96 parts of quality and is disperseed, and 1 part of matter is added
The aqueous dispersion 6012 of amount, you can the photocatalyst solution decomposed suitable for vehicle exhaust is prepared.
Referring to Fig.2, for the X-ray diffractogram of photocatalyst powder provided in an embodiment of the present invention；The X-ray diffractogram is X
X ray diffraction instrument is analyzed to obtain to the photocatalyst powder that the embodiment of the present invention obtains, and abscissa " 2 Φ " indicates in Fig. 2
Be X-ray diffraction instrument scanning angle, ordinate " Intensity (intensity) " indicate is X-ray diffraction instrument spy
It surveys device and detects the particle counting in the unit interval (generally in seconds)；By the X-ray diffraction of obtained photocatalyst powder
The PDF standard card valuts of figure and X-ray diffraction are compared, it may be determined that contain anatase and oxidation in the photocatalyst powder
Cerium, and main group of anatase becomes titanium dioxide, so passing through the main of the photocatalyst powder known to X-ray diffraction analysis
Ingredient is titanium dioxide and cerium oxide；Cerium oxide itself has stronger capacity of decomposition, and titanium dioxide conduct to vehicle exhaust
Common photocatalyst, it is induced with bloom, but the excitation of spectra of titanium dioxide is shorter, can only by ultraviolet excitation,
So ferro element is added in the reaction raw materials for preparing photocatalyst, improved using ferro element the visible light of photocatalyst absorptivity and
Light-initiated rate has high light-initiated rate, while also having to obtain that the embodiment of the present invention provided to visible-light absorptivity height
High catalytic activity, the photocatalyst powder of energy efficient-decomposition vehicle exhaust.
It is the micro- electron microscope of photocatalyst powder provided in an embodiment of the present invention refering to Fig. 3；Fig. 3 is shown through this hair
Image of the photocatalyst powder that the preparation method that bright embodiment provides is prepared under the observation of electron scanning Electronic Speculum, the ruler of the figure
Very little scale is 100nm (nanometer), that is to say, that for the face shaping of the photocatalyst powder particle at regular sphere, particle size is big
Small is Nano grade, belongs to ball shaped nano photocatalyst, can catalytic chemistry reaction under light illumination generation, and itself does not change
Learn variation.
Refering to Fig. 4 and Fig. 5, Fig. 4 and Fig. 5 be respectively photocatalyst oxygenolysis carbon monoxide provided in an embodiment of the present invention and
At from photocatalyst 1.5cm with luminous intensity it is 3mW/cm2 (luminous intensity units shown in the design sketch of nitrogen dioxide, Fig. 4 and Fig. 5：
Megawatt/square centimeter) light source be irradiated under conditions of obtained experimental data；It, can in order to keep experimental data more accurate
Photocatalyst is placed in carbon monoxide or the higher environment of content of nitrogen dioxide and is tested.This two figure mainly reflects (horizontal seat at any time
Mark) passage carbon monoxide and nitrogen dioxide resolution process amount (ordinate), shown in dotted line be respectively ordinary titanium dioxide in figure
Photocatalyst decomposes the effect curve of carbon monoxide, nitrogen dioxide, and shown in solid in figure is respectively what the embodiment of the present invention was provided
The photocatalyst that photocatalyst preparation method is prepared decomposes the effect curve of carbon monoxide, nitrogen dioxide；It is not difficult to obtain from figure,
Carbon monoxide of the photocatalyst that the photocatalyst preparation method provided through the embodiment of the present invention is prepared within the same time
One times or more, and oxidizing carbon monoxide, dioxy are averagely higher by than ordinary titanium dioxide photocatalyst with the treating capacity of nitrogen dioxide
Change nitrogen efficiency will higher (by empty, solid-line curve slope), the active term of validity is also longer.
The preparation method of the photocatalyst for the decomposing automobile exhaust that the embodiment of the present invention is provided, compared with the prior art, tool
There is following progress：
1, this method preparation process is simple, prepares raw material and easily obtains, and preparation condition is easily realized, and low energy consumption for preparation process；
2, the photocatalyst that this method is prepared be ball shaped nano photocatalyst, can under light illumination catalytic chemistry reaction hair
It is raw, and chemical change itself does not occur, it can be used for a long time；
3, the introducing of ferro element further improves the absorptivity and light of the visible light for the photocatalyst that this method is prepared
Initiation rate makes the application scenarios of photocatalyst increase, and applicability is wider, is particularly suitable for highway and gets on the car the decomposition of tail gas；
4, the photocatalyst main component that this method is prepared is titanium dioxide and cerium oxide, and titanium dioxide draws with bloom
Hair property, and there is cerium oxide strong vehicle exhaust capacity of decomposition, the two to combine and further improve photocatalyst catalytic activity, enhance
Capacity of decomposition of the photocatalyst to vehicle exhaust；
5, the photocatalyst that this method is prepared within the same time to the carbon monoxide and titanium dioxide in vehicle exhaust
The treating capacity of nitrogen is averagely higher by one times or more, and treatment effeciency higher than ordinary titanium dioxide photocatalyst, and the active term of validity is longer.
The present invention is not limited to the above-described embodiments and embodiment, other any Spirit Essences without departing from the present invention and original
Lower the done changes, modifications, substitutions, combinations, simplifications of reason, should be equivalent substitute mode, are all considered as being contained in the present invention
Protection domain within.
Claims (7)
1. a kind of preparation method of photocatalyst, which is characterized in that include the following steps：
Titanium tetrachloride, cerous nitrate, iron chloride and polyvinylpyrrolidone are dispersed in ethanol solution, obtain disperseing molten sample；
The molten sample of dispersion is placed in heated sealed in the liner of hydrothermal reaction kettle to react；Again will heating reaction after mixture from
Gains in depth of comprehension clean the solid crystal to solid crystal, with ethanol solution, obtain presoma；
The presoma is put into Muffle furnace and is heat-treated, photocatalyst powder is obtained after cooling.
2. the preparation method of photocatalyst as described in claim 1, which is characterized in that described by titanium tetrachloride, cerous nitrate, chlorination
Iron and polyvinylpyrrolidone are dispersed in ethanol solution, obtain disperseing molten sample be specially：By four chlorinations of 14-15 parts of quality
The polyvinylpyrrolidone of the cerous nitrate of titanium, 13-16 part quality, the iron chloride of 4-6 parts of quality and 1-3 parts of quality is dispersed in
In the ethanol solution of 60-70 parts of quality, the molten sample of dispersion is obtained.
3. the preparation method of photocatalyst as described in claim 1, which is characterized in that anti-the molten sample of dispersion is placed in hydro-thermal
Before answering in the liner of kettle heated sealed reaction, the liner was placed in chloroazotic acid after 3 hours, is cleaned and is dried using deionized water
Processing.
4. the preparation method of photocatalyst as described in claim 1, which is characterized in that clean the solid knot with ethanol solution
Crystalline substance at least cleans three times.
5. the preparation method of photocatalyst as described in claim 1, which is characterized in that the hydrothermal reaction kettle heated sealed reaction
Temperature be 170-250 DEG C, heating the reaction time be 16-24 hours.
6. the preparation method of photocatalyst as described in claim 1, which is characterized in that the heat treatment temperature is 500-700 DEG C,
Heat treatment time is 1-3 hours.
7. the preparation method of photocatalyst as claimed in any one of claims 1 to 6, which is characterized in that the preparation side of the photocatalyst
Method further includes：The photocatalyst powder of 1.5-5 parts of quality is placed in the water of 95-98 parts of quality and is disperseed, and 1-2 parts of matter are added
The dispersant of amount, is prepared photocatalyst solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297048.7A CN108786821A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of photocatalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297048.7A CN108786821A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of photocatalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108786821A true CN108786821A (en) | 2018-11-13 |
Family
ID=64053820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710297048.7A Pending CN108786821A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of photocatalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108786821A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583252A (en) * | 2004-06-15 | 2005-02-23 | 中国科学院新疆理化技术研究所 | Preparation of air purifier for visible light responded titanium dioxide photocatalytic chamber |
| CN1607035A (en) * | 2003-10-16 | 2005-04-20 | 国防部中山科学研究院 | Method for processing waste gas treating ultraviolet lamp and waste gas treating method |
| CN105597528A (en) * | 2015-11-03 | 2016-05-25 | 中山大学 | Waste gas purification device and process |
| CN105618050A (en) * | 2016-01-26 | 2016-06-01 | 杭州久和环保科技有限公司 | Visible-light responded compound catalyst for degrading organic pollutants in salt-containing wastewater and preparation method of visible-light responded compound catalyst |
-
2017
- 2017-04-28 CN CN201710297048.7A patent/CN108786821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607035A (en) * | 2003-10-16 | 2005-04-20 | 国防部中山科学研究院 | Method for processing waste gas treating ultraviolet lamp and waste gas treating method |
| CN1583252A (en) * | 2004-06-15 | 2005-02-23 | 中国科学院新疆理化技术研究所 | Preparation of air purifier for visible light responded titanium dioxide photocatalytic chamber |
| CN105597528A (en) * | 2015-11-03 | 2016-05-25 | 中山大学 | Waste gas purification device and process |
| CN105618050A (en) * | 2016-01-26 | 2016-06-01 | 杭州久和环保科技有限公司 | Visible-light responded compound catalyst for degrading organic pollutants in salt-containing wastewater and preparation method of visible-light responded compound catalyst |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zinatloo-Ajabshir et al. | Sono-synthesis and characterization of Ho2O3 nanostructures via a new precipitation way for photocatalytic degradation improvement of erythrosine | |
| Edwards et al. | Raman spectroscopic study of 3000‐year‐old human skeletal remains from a sambaqui, Santa Catarina, Brazil | |
| JP4519101B2 (en) | Method for producing highly active anatase-type titanium dioxide sol using metatitanic acid as a precursor | |
| Gad-Allah et al. | Role of core diameter and silica content in photocatalytic activity of TiO2/SiO2/Fe3O4 composite | |
| US6645460B2 (en) | Titanium hydroxide and photocatalytic coating agent | |
| Talebi | Copper aluminate nanoparticles: synthesis through an eco-friendly approach and its photocatalyst application | |
| CN105170170A (en) | g-C3N4-ZnO/HNTs composite photocatalyst, preparation method therefor and application thereof | |
| CN110420630A (en) | A kind of black titanium dioxide photochemical catalyst and the preparation method and application thereof | |
| CN109622007A (en) | A kind of N doping composite photo-catalyst and preparation method thereof | |
| TWI304048B (en) | A media having crystals of ammonium oxotrifluorotitanate, a method for preparing the same, and a method for preparing madias having crystals of titanium dioxide | |
| CN107790163A (en) | A kind of photochemical catalyst In2O3/g‑C3N4B preparation and application | |
| CN109336381A (en) | A kind of black bio glass and its preparation method and application | |
| Truppi et al. | Photocatalytic activity of TiO2/AuNRs–SiO2 nanocomposites applied to building materials | |
| Shabalina et al. | Phase and structural thermal evolution of Bi–Si–O catalysts obtained via laser ablation | |
| CN108786821A (en) | A kind of preparation method of photocatalyst | |
| JP4424905B2 (en) | Anatase type titania-silica composite, production method thereof and photocatalytic material | |
| Mosleh | Auto-combustion preparation and characterization of CoAl 2 O 4 nanoparticles with different morphologies and its photocatalyst application | |
| Riaz et al. | Historical background, development and preparation of nanomaterials | |
| Onwubu et al. | Remineralization Potential of a Modified Eggshell–Titanium Composite-Scanning Electron Microscope Study | |
| CN1193824C (en) | Purified catalyst, its preparing method and gas purifying apparatus | |
| JP4484195B2 (en) | Method for producing titanium oxide | |
| CN108043386A (en) | A kind of TiO2/Bi2O3The preparation method of nanotube composite photo-catalyst | |
| Rajan et al. | Green Chemistry Synthesis of Nanostructured Zinc Oxide Powder Using Azadirachta indica Extract for Latent Fingermark Development. | |
| Shah | Green Chemistry for Environmental Sustainability-Prevention-Assurance-Sustainability (PAS) Approach: Prevention-Assurance-Sustainability (PAS) Approach | |
| JPH0924281A (en) | Photocatalyst and its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
|
| RJ01 | Rejection of invention patent application after publication |