CN109046313A - A kind of preparation method and application of high activity cerium dioxide photocatalyst - Google Patents
A kind of preparation method and application of high activity cerium dioxide photocatalyst Download PDFInfo
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- CN109046313A CN109046313A CN201810924987.4A CN201810924987A CN109046313A CN 109046313 A CN109046313 A CN 109046313A CN 201810924987 A CN201810924987 A CN 201810924987A CN 109046313 A CN109046313 A CN 109046313A
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- cerium dioxide
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- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title claims abstract description 35
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 230000000694 effects Effects 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002086 nanomaterial Substances 0.000 claims abstract description 14
- 239000013049 sediment Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000011259 mixed solution Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 5
- 230000001376 precipitating effect Effects 0.000 claims abstract description 5
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000006731 degradation reaction Methods 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical group [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 3
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 125000005909 ethyl alcohol group Chemical group 0.000 claims 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 1
- 229910000027 potassium carbonate Inorganic materials 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 238000007146 photocatalysis Methods 0.000 abstract description 8
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 3
- 229940012189 methyl orange Drugs 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 2
- 229960000907 methylthioninium chloride Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- HRXZUGNDGULQSA-UHFFFAOYSA-N acetic acid;cerium Chemical compound [Ce].CC(O)=O.CC(O)=O.CC(O)=O HRXZUGNDGULQSA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- -1 oxygen ion Chemical class 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/84—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by UV- or VIS- data
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
The invention discloses a kind of preparation method and applications of high activity cerium dioxide photocatalyst, belong to the synthesis technical field of cerium dioxide photocatalyst.Technical solution of the present invention main points are as follows: cerous salt is dissolved in alcoholic solvent and obtains uniform solution, hydrogen peroxide is added in uniform solution, reaction 0.5-2h obtains mixed solution at normal temperature, precipitating reagent is added in mixed solution, adjust the pH to 7-12 of mixed system, continue to be stirred to react 0.5-2h, sediment in reaction solution is centrifugated and is cleaned with deionized water, sediment is obtained into high activity cerium dioxide nano material in 40-300 DEG C of dry 0.5-12h.Catalysis material prepared by the present invention have efficient photocatalysis performance, can under sunlight or radiation of visible light effective degradable organic pollutant, be expected to generate good social and economic benefit in field of environmental improvement.
Description
Technical field
The invention belongs to the synthesis technical fields of cerium dioxide photocatalyst, and in particular to a kind of high activity ceria light
The preparation method and applications of catalyst.
Background technique
Ceria (CeO2) it is a kind of cheap, widely used rare earth oxide, because it is with the Strong oxdiative under high temperature
Reducing power and oxygen ion conduction performance and be widely used in purifying vehicle exhaust, catalyst, lambda sensor, soild oxide
The Modern High-Tech fields such as fuel cell electrode material, chemical machine polishing grinding material.Especially there is relatively good light to urge for it
Change and thermocatalytic is active, can be good at applying in terms of photocatalytic water and fuel cell.But since its specific surface area is small and
The lower raising for affecting catalytic activity of the dispersion degree of active component.With global pollution problem, ceria is urged in light
Change field causes the great interest of people.
Due to CeO2Forbidden bandwidth be 3.1eV, ultraviolet light can only be absorbed, it is very low to the utilization rate of sunlight.Both at home and abroad
Researcher, which mainly uses, adulterates the means such as nonmetallic, heterojunction structure, surface modification to CeO2It is modified, to increase its photocatalysis
Response range and light efficiency.The photocatalysis performance of material can be carried out by the method for Morphological control and dissimilar metal ion doping
Regulation, but pass through regulation CeO2Active report itself is rarely found.Common activity regulation prepares CeO simultaneously2Method one
As be related to harsh conditions or the means such as hydro-thermal (solvent heat), plasma diffraction or high-temperature calcination, also increase in preparation process
Energy consumption.The shortcoming for how overcoming existing preparation method obtains high activity CeO by the more mild method of condition2Light
Catalyst is CeO2The important key technology point of one of photochemical catalyst scale application.
Summary of the invention
The high activity two simple and mild preparation condition the technical problem to be solved by the present invention is to provide a kind of technical process
The preparation method of cerium oxide photochemical catalyst, high activity cerium dioxide photocatalyst made from this method can be more responsive to visible
Light, enhances the effective rate of utilization of light energy, to improve the efficiency of ceria degradable organic pollutant.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, a kind of high activity cerium dioxide photocatalyst
Preparation method, it is characterised in that specific steps are as follows:
Step S1: cerous salt being dissolved in alcoholic solvent and obtains uniform solution, and wherein cerous salt is cerous nitrate or acetic acid
Cerium, alcoholic solvent are ethyl alcohol or ethylene glycol；
Step S2: in the uniform solution that hydrogen peroxide addition step S1 is obtained, 0.5-2h is reacted at normal temperature and is mixed
Solution；
Step S3: in the mixed solution that precipitating reagent addition step S2 is obtained, the pH to 7-12 of mixed system is adjusted, is continued
Be stirred to react 0.5-2h, by reaction solution sediment be centrifugated and cleaned with deionized water, the precipitating reagent be sodium hydroxide,
Potassium hydroxide or sodium carbonate；
Step S4: the sediment that step S3 is obtained is obtained into high activity ceria in 40-300 DEG C of dry 0.5-12h and is received
Rice material.
Preferably, the molar ratio of hydrogen peroxide described in step S2 and cerous salt is 1~100:1.
High activity cerium dioxide nano material of the present invention catalytic degradation under sunlight or radiation of visible light is organic
The application of pollutant.
Compared with prior art, the invention has the following advantages:
1, high activity cerium dioxide photocatalyst produced by the present invention not only has efficient absorption property to dyestuff, but also
With visible light-responded characteristic；
2, preparation method of the present invention is simple, and raw material are cheap and easy to get, and preparation is simple, low in cost；
3, the present invention is since synthesis temperature is low, atmospheric operation, it is easy to accomplish industrialized mass production；
4, the present invention, can be maximum due to not having in preparation process using any surfactant and other organic additives
Degree reduces the pollution that preparation nano material generates, while high activity CeO obtained2There is no the influence of impurity phase；
5, the catalysis material prepared by the present invention has efficient photocatalysis performance, can shine in sunlight or visible light
Lower effective degradable organic pollutant is penetrated, is expected to generate good social and economic benefit in field of environmental improvement.
Detailed description of the invention
Fig. 1 is the X-ray pounder diff action map that ceria light nano material is made in embodiment 1；
Fig. 2 is the ultraviolet-ray visible absorbing map that ceria light nano material aqueous dispersion is made in embodiment 2.
Specific embodiment
Above content of the invention is described in further details by the following examples, but this should not be interpreted as to this
The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on above content of the present invention belong to this hair
Bright range.
Embodiment 1
Step S1: stirring and dissolving in 50mL ethyl alcohol is added in 0.50g cerous nitrate and obtains uniform solution；
Step S2: in the uniform solution that 1.8mL hydrogen peroxide addition step S1 is obtained, 0.5h is reacted at normal temperature and is mixed
Close solution；
Step S3: the potassium hydroxide aqueous solution that mass concentration is 10% is added in the mixed solution that step S2 is obtained, is adjusted
The pH to 12 for saving mixed system, continues to be stirred to react 2h, and sediment in reaction solution is centrifugated and is cleaned with deionized water；
Step S4: the sediment that step S3 is obtained is obtained into high activity cerium dioxide nano material in 60 DEG C of dry 12h.
Ceria catalysis material prepared by the present embodiment is logical as the photocatalytic activity of visible-light photocatalyst
It crosses photocatalytic degradation methylene blue and methyl orange solution is characterized.Experimentation is as follows: by 0.01g ceria photocatalysis material
Material is dispersed in the beaker equipped with 40mL organic aqueous solution (40mg/L).Visible light source is the xenon lamp equipped with optical filter, light
Source and liquid level distance are 8cm, every 30min, after reaction solution is first filtered, test the concentration of methyl orange in solution.Degradation
The concentration of methyl orange is measured by uv-visible absorption spectra in liquid.According to the concentration of degradation solution Methylene Blue and methyl orange come
Determine light-catalysed degradation effect.
Table 1
Embodiment 2
Step S1: stirring and dissolving in 100mL ethylene glycol is added in 1.50g cerous acetate and obtains uniform solution；
Step S2: in the uniform solution that 2mL hydrogen peroxide addition step S1 is obtained, reaction 1h obtains mixing molten at normal temperature
Liquid；
Step S3: the aqueous sodium carbonate that mass concentration is 10% is added in the mixed solution that step S2 is obtained, is adjusted
The pH to 8 of mixed system, continues to be stirred to react 1h, and sediment in reaction solution is centrifugated and is cleaned with deionized water；
Step S4: the sediment that step S3 is obtained is obtained into high activity cerium dioxide nano material in 120 DEG C of dry 6h.
Method in the photocatalysis performance test reference embodiment 1 of cerium dioxide nano material prepared by the present embodiment,
As a result it is listed in table 2.
Table 2
Embodiment 3
Step S1: stirring and dissolving in 20mL ethylene glycol is added in 0.50g cerous nitrate and obtains uniform solution；
Step S2: in the uniform solution that 0.2mL hydrogen peroxide addition step S1 is obtained, 0.5h is reacted at normal temperature and is mixed
Close solution；
Step S3: the potassium hydroxide aqueous solution that mass concentration is 10% is added in the mixed solution that step S2 is obtained, is adjusted
The pH to 7.5 for saving mixed system, continues to be stirred to react 2h, and sediment in reaction solution is centrifugated and is cleaned with deionized water；
Step S4: the sediment that step S3 is obtained is obtained into high activity cerium dioxide nano material in 280 DEG C of dry 0.5h.
Method in the photocatalysis performance test reference embodiment 1 of cerium dioxide nano material prepared by the present embodiment,
As a result it is listed in table 3.
Table 3
Embodiment 4
Step S1: stirring and dissolving in 50mL ethyl alcohol is added in 1.50g cerous acetate and obtains uniform solution；
Step S2: in the uniform solution that 1mL hydrogen peroxide addition step S1 is obtained, reaction 2h obtains mixing molten at normal temperature
Liquid；
Step S3: the aqueous sodium carbonate that mass concentration is 10% is added in the mixed solution that step S2 is obtained, is adjusted
The pH to 11 of mixed system, continues to be stirred to react 1h, and sediment in reaction solution is centrifugated and is cleaned with deionized water；
Step S4: the sediment that step S3 is obtained is obtained into high activity cerium dioxide nano material in 280 DEG C of dry 1h.
Method in the photocatalysis performance test reference embodiment 1 of cerium dioxide nano material prepared by the present embodiment,
As a result it is listed in table 4.
Table 4
The above embodiments and description only illustrate the principle of the present invention, in the model for not departing from the principle of the invention
Under enclosing, various changes and improvements may be made to the invention, these changes and improvements all fall within the protection scope of the present invention interior.
Claims (3)
1. a kind of preparation method of high activity cerium dioxide photocatalyst, it is characterised in that specific steps are as follows:
Step S1: cerous salt being dissolved in alcoholic solvent and obtains uniform solution, and wherein cerous salt is cerous nitrate or cerous acetate, alcohol
Solvent is ethyl alcohol or ethylene glycol；
Step S2: in the uniform solution that hydrogen peroxide addition step S1 is obtained, 0.5-2h is reacted at normal temperature and obtains mixed solution；
Step S3: in the mixed solution that precipitating reagent addition step S2 is obtained, the pH to 7-12 of mixed system is adjusted, continues to stir
0.5-2h is reacted, sediment in reaction solution is centrifugated and is cleaned with deionized water, the precipitating reagent is sodium hydroxide, hydrogen-oxygen
Change potassium or sodium carbonate；
Step S4: the sediment that step S3 is obtained is obtained into high activity cerium dioxide nano material in 40-300 DEG C of dry 0.5-12h
Material.
2. the preparation method of high activity cerium dioxide photocatalyst according to claim 1, it is characterised in that: in step S2
The molar ratio of the hydrogen peroxide and cerous salt is 1 ~ 100:1.
3. high activity cerium dioxide nano material is in sunlight or visible light made from method according to claim 1 or 2
Irradiate the application of lower catalytic degradation organic pollutant.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377709A (en) * | 2022-01-26 | 2022-04-22 | 江西师范大学 | Hydrothermal method for preparing CeO2/Ce(OH)CO3Method of heterojunction |
| CN114522731A (en) * | 2021-12-30 | 2022-05-24 | 合肥学院 | Preparation method and application of photocatalyst cerium dioxide-metal organic framework |
| CN115215499A (en) * | 2022-07-18 | 2022-10-21 | 北京师范大学 | Household multi-effect ceramic water purifier and manufacturing method thereof |
| CN116159597A (en) * | 2023-02-24 | 2023-05-26 | 长春吉原生物科技有限公司 | Cerium oxide hydrogel microsphere, preparation method and application thereof |
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| CN114522731B (en) * | 2021-12-30 | 2023-12-29 | 合肥学院 | Application of ceria-metal organic framework in photocatalytic degradation of active blue 19 |
| CN114377709A (en) * | 2022-01-26 | 2022-04-22 | 江西师范大学 | Hydrothermal method for preparing CeO2/Ce(OH)CO3Method of heterojunction |
| CN115215499A (en) * | 2022-07-18 | 2022-10-21 | 北京师范大学 | Household multi-effect ceramic water purifier and manufacturing method thereof |
| CN116159597A (en) * | 2023-02-24 | 2023-05-26 | 长春吉原生物科技有限公司 | Cerium oxide hydrogel microsphere, preparation method and application thereof |
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