CN110280234A - A kind of preparation method and application for mixing europium photocatalyst of zinc oxide - Google Patents
A kind of preparation method and application for mixing europium photocatalyst of zinc oxide Download PDFInfo
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- CN110280234A CN110280234A CN201910626725.4A CN201910626725A CN110280234A CN 110280234 A CN110280234 A CN 110280234A CN 201910626725 A CN201910626725 A CN 201910626725A CN 110280234 A CN110280234 A CN 110280234A
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 37
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 27
- 229910052693 Europium Inorganic materials 0.000 title claims abstract description 24
- 238000002156 mixing Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 title claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 230000001699 photocatalysis Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 8
- GAGGCOKRLXYWIV-UHFFFAOYSA-N europium(3+);trinitrate Chemical compound [Eu+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GAGGCOKRLXYWIV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000004809 Teflon Substances 0.000 claims abstract description 6
- 229920006362 Teflon® Polymers 0.000 claims abstract description 6
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004246 zinc acetate Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000005245 sintering Methods 0.000 claims abstract description 3
- 238000007146 photocatalysis Methods 0.000 claims description 7
- IPPKXZVVMAMFSA-UHFFFAOYSA-N zinc europium(3+) oxygen(2-) Chemical compound [O-2].[Eu+3].[Zn+2] IPPKXZVVMAMFSA-UHFFFAOYSA-N 0.000 abstract description 23
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 description 24
- 238000006731 degradation reaction Methods 0.000 description 24
- 229960001296 zinc oxide Drugs 0.000 description 21
- 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 14
- 229940012189 methyl orange Drugs 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 238000002835 absorbance Methods 0.000 description 9
- 239000000975 dye Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 6
- 229940043267 rhodamine b Drugs 0.000 description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 229960000907 methylthioninium chloride Drugs 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- -1 rare earth ion Chemical class 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 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 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910000238 buergerite Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 231100000647 material safety data sheet Toxicity 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002077 nanosphere Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000001048 orange dye Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 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
-
- 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
- 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
-
- 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
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of preparation method for mixing europium photocatalyst of zinc oxide, by the zinc acetate NaOH that is dissolved in dehydrated alcohol, and is added, the europium nitrate added, stirring 1h gets a uniform mixture；Resulting mixed solution is put into the reaction kettle of teflon lined, reacts 5h under the conditions of 180 DEG C, then cooling obtains product；Resulting product dehydrated alcohol and water are washed respectively, are centrifugated 3 times, dries 12h under the conditions of 70 DEG C, places into Muffle furnace 800 DEG C of sintering 1h to get europium photocatalyst of zinc oxide material is mixed.It is provided by the invention to mix europium photocatalyst of zinc oxide photocatalytic activity with higher, by repeatedly using, mix europium Zinc oxide catalytic photocatalytic activity still with higher.
Description
Technical field
The invention belongs to function nano material preparation technology and photocatalysis technology field, and in particular to one kind mixes europium zinc oxide light
The preparation method of catalyst.
Background technique
In recent years, it weaves and the water pollution problems of pharmaceutical industry has become serious environmental problem, need to find one kind
Economic method can solve this problem come these pollutants of degrading in the world.Light based on semiconductor is urged
Change technology is since its is environmental-friendly and cost is relatively low and receives more and more attention.In various semiconductor materials, zinc oxide
Since its oxidation-reduction potential is high, exciton binding energy is big, physics and chemical stability are preferable, cheap and nontoxic be used as photocatalysis
Agent.Although the photocatalytic activity of these ZnO nano-structures is very high, since the photo-generate electron-hole in ZnO photocatalyst is to easy
In compound, cause light quantum utilization rate low, to reduce its photocatalysis efficiency.Therefore, the photoresponse model of ZnO photocatalyst is widened
The separative efficiency of photo-generate electron-hole in photocatalytic process is enclosed, improved, develops and is had become based on the modified high efficiency photocatalyst of ZnO
One of great front line science exploration field at this stage.
Currently, the method for commonly improving the photocatalytic activity of nano-ZnO has: Morphological control, surface noble metal loading, table
Face photosensitizer, semiconductors coupling and ion doping etc..
Ion doping forms defect level or localized state by the way that ion to be incorporated into ZnO lattice in its band gap
Impurity energy level, and introduce Lacking oxygen abundant can reach photo-generated carrier and have while widening ZnO optical response range
Imitate isolated purpose.It therefore, is method that is a kind of very simple and being effectively improved ZnO photocatalytic activity.Ion doping substantially may be used
To be divided into metal ion mixing and nonmetallic ion-doped.Metal ion mixing can reduce the recombination rate of electron-hole, expand
Spectral response range is opened up, while offer can be embedded in semiconductor forbidden band and receive the metal tape of excitation electronics, to make partly to lead
The light absorption range of body is extended to visible light wave range.
Since the ability of rare earth ion capture electronics is stronger, the doping of rare earth ion can change semiconductor oxygen
The performance of compound can be effectively reduced the combined efficiency of photo-generate electron-hole pair.The present invention is prepared using simple hydro-thermal method
Rare earth Eu3+The zinc oxide nanosphere of doping, and it is organic as catalyst degradation methyl orange, rhodamine B and methylene blue etc.
Dyestuff, it is demonstrated experimentally that europium doping zinc-oxide photochemical catalyst has high light catalytic degradation activity to organic pollutant, obtained light is urged
Agent has a good application prospect in terms of Organic Dyestuff Wastewater Treatment.
Summary of the invention
The purpose of the present invention is providing a kind of preparation method for mixing europium photocatalyst of zinc oxide for existing problem, according to
Europium zinc oxide is mixed by repeatedly using according to the composite photocatalyst material photocatalytic activity with higher of this method production
Catalyst photocatalytic activity still with higher.
The present invention is achieved by the following technical solutions:
A kind of preparation method for mixing europium photocatalyst of zinc oxide, includes the following steps:
(1) zinc acetate of 0.5g is dissolved in 20mL dehydrated alcohol, and the NaOH of 0.1g is added, add 0.0879~
The europium nitrate of 0.4229g, stirring 1h get a uniform mixture；
(2) step (1) resulting mixed solution is put into the reaction kettle of teflon lined, under the conditions of 180 DEG C
5h is reacted, then cooling obtains product；
(3) product dehydrated alcohol obtained in step (2) and water washed respectively, be centrifugated 3 times, in 70 DEG C of conditions
Lower drying 12h places into Muffle furnace 800 DEG C of sintering 1h to get described and mixes europium photocatalyst of zinc oxide material.
In another aspect, the present invention provides what the preparation method was prepared to mix europium Zinc oxide catalytic in photocatalysis
Application.
The present invention is mesh with methyl orange (MO), rhodamine B (RodamineB), three kinds of organic dyestuff of methylene blue (MSDS)
Degradation product is marked, the photocatalytic activity for mixing europium zinc oxide using the method for the present invention preparation is investigated, the results showed that the present invention
The europium zinc oxide photocatalysis of mixing of method preparation has good photocatalytic activity to three kinds of organic dyestuff, before having good application
Scape.
The present invention has following advantage compared with prior art:
The preparation method provided by the invention for mixing europium photocatalyst of zinc oxide, the composite photocatalyst material made according to this method
Expect photocatalytic activity with higher, by repeatedly using, it is living to mix the photocatalysis still with higher of europium Zinc oxide catalytic
Property.
Detailed description of the invention
The X-ray diffractogram for mixing europium zinc oxide prepared by Fig. 1 embodiment 1.
The scanning electron microscope (SEM) photograph for mixing europium zinc oxide prepared by Fig. 2 embodiment 1.
Prepared by Fig. 3 embodiment 1 mixes the absorbance change of the methyl orange different time of europium zinc oxide degradation 10mg/L.
Prepared by Fig. 4 embodiment 1 mixes europium zinc oxide to the degradation rate after the dyestuff degradation 100min of various concentration.
Prepared by Fig. 5 embodiment 1-3 and comparative example 1 mixes europium zinc oxide and photocatalyst of zinc oxide to the methyl of 10mg/L
Degradation rate after orange degradation 100min.
Prepared by Fig. 6 embodiment 1 mixes europium zinc oxide to the degradation rate after three kinds of different dyes degradation 50min and 100min.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
A kind of preparation method for mixing europium photocatalyst of zinc oxide of embodiment 1
Include the following steps:
(1) zinc acetate of 0.5g is dissolved in 20mL dehydrated alcohol, and the NaOH of 0.1g is added, add 0.0879g's
Europium nitrate, stirring 1h get a uniform mixture；
(2) gained mixed solution is put into the reaction kettle of teflon lined, reacts 5h under the conditions of 180 DEG C, so
After cool down；
(3) products therefrom dehydrated alcohol in step (2) and water washed respectively, be centrifugated 3 times, under the conditions of 70 DEG C
12h is dried, places into Muffle furnace and is sintered 1h to get the photocatalyst of zinc oxide material mixed europium mass fraction and be 1% for 800 DEG C
Material.
A kind of preparation method for mixing europium photocatalyst of zinc oxide of embodiment 2
Include the following steps:
(1) zinc acetate of 0.5g is dissolved in 20mL dehydrated alcohol, and the NaOH of 0.1g is added, add 0.1699g's
Europium nitrate, stirring 1h get a uniform mixture；
(2) gained mixed solution is put into the reaction kettle of teflon lined, reacts 5h under the conditions of 180 DEG C, so
After cool down；
(3) products therefrom dehydrated alcohol in step (2) and water washed respectively, be centrifugated 3 times, under the conditions of 70 DEG C
12h is dried, places into Muffle furnace and is sintered 1h to get the photocatalyst of zinc oxide material mixed europium mass fraction and be 2% for 800 DEG C
Material.
A kind of preparation method for mixing europium photocatalyst of zinc oxide of embodiment 3
Include the following steps:
(1) zinc acetate of 0.5g is dissolved in 20mL dehydrated alcohol, and the NaOH of 0.1g is added, add 0.4229g's
Europium nitrate, stirring 1h get a uniform mixture；
(2) gained mixed solution is put into the reaction kettle of teflon lined, reacts 5h under the conditions of 180 DEG C, so
After cool down；
(3) products therefrom dehydrated alcohol in step (2) and water washed respectively, be centrifugated 3 times, under the conditions of 70 DEG C
12h is dried, places into Muffle furnace and is sintered 1h to get the photocatalyst of zinc oxide material mixed europium mass fraction and be 5% for 800 DEG C
Material.
A kind of preparation method of the photocatalyst of zinc oxide of comparative example 1
Preparation method is substantially with embodiment 1, and being a difference in that for embodiment 1:
Step is added without europium nitrate in (1).
Experimental example
Methyl orange is configured to the solution that concentration is 5mg/L, 10mg/L, 20mg/L, 40mg/L, uses ultraviolet-visual spectrometer
Its absorbance is surveyed in measurement, does concentration-absorbance standard curve.
Take 50mg embodiment 1-3 and the catalyst of the preparation of comparative example 1 in the methyl orange solution of the 10mg/L of 100mL,
90min is stirred under the conditions of being protected from light, and then using xenon lamp as light source, during light-catalyzed reaction, keeps the lasting stirring of solution,
3mL sample was taken every 10 minutes, is centrifuged, is taken supernatant, its absorbance is measured respectively with ultraviolet-visual spectrometer, according to absorbance
Variation calculate concentration, and further calculate degradation rate.
Methyl orange solution during aforesaid operations is substituted for rhodamine B solution, carries out photocatalytic degradation experiment.
Methyl orange solution during aforesaid operations is substituted for methylene blue solution, carries out photocatalytic degradation experiment.
Fig. 1 is the X-ray diffractogram for mixing europium zinc oxide prepared by embodiment 1, and the nano zinc oxide material array of preparation is
The crystallization of height, incorporation europium ion makes the peak shape of nano zinc oxide material clear sharp and relatively narrow, has buergerite knot
Structure has preferred c-axis orientation.Mixing europium zinc oxide is high-purity, does not detect the second equal impurity peaks.And it can be from
Find out in XRD spectra 2 θ=31 ° of the angle of diffraction, 34 °, 36 °, 47.5 °, 56 °, 62.5 ° respectively correspond crystal (100), (002),
(101), (102), (110), (103) crystal face are to illustrate that synthesized nano zinc oxide material is hexagonal crystal system buergerite knot
Structure.Mixing europium zinc oxide also has good crystallinity, illustrate europium ion be successfully doped to zincite crystal material it
In.
Fig. 2 mixes europium zinc oxide scanning electron microscope (SEM) photograph for prepared by embodiment 1.The europium zinc oxide of mixing that preparation is shown in figure is partial size
The nanosphere being evenly distributed, average diameter about 100nm illustrate that europium zinc oxide of mixing obtained in ethanol has good dispersion
Property.
Fig. 3 is the absorbance change of the methyl orange different time for mixing europium zinc oxide degradation 10mg/L prepared by embodiment 1.Place
The absorbance of solution is 0.972 before managing, and as time increases, solution absorbance is gradually reduced, solution after the 100min that degrades
Absorbance is 0.050, and degradation rate of methyl orange solution is 94.9% in the case of this.
Fig. 4 is drop when being incorporated as the methyl orange illumination 100min for mixing europium zinc oxide to various concentration of the preparation of embodiment 1
Solution rate.According to the corresponding degradation rate of the methyl orange of various concentration, the optimal dye strength that catalyst can be catalyzed can be contrasted.
It is corresponding that four points in figure are from left to right followed successively by the methyl orange dye that concentration is 5mg/L, 10mg/L, 20mg/L, 40mg/L
Degradation rate.According to diagram can significantly contrast for europium doped mass of ion score be 1% nano zinc oxide material and
Speech, as methyl orange initial concentration increases to 10mg/L by 5mg/L, degradation rate increases, when its first that concentration is 10mg/L of degrading
Best catalytic effect can be reached when base orange, methyl orange initial concentration continues growing, and degradation rate is gradually reduced.Because of dye strength
It increases, affects absorption of the solution to ultraviolet light, to reduce utilization of the photochemical catalyst to optical radiation energy, make under degradation rate
Drop.
Fig. 5 is embodiment 1-3 and prepared by comparative example 1 mixes europium zinc oxide and photocatalyst of zinc oxide to the methyl of 10mg/L
Degradation rate after orange degradation 100min, four points are from left to right followed successively by comparative example 1, embodiment 1, embodiment 2,3 He of embodiment
The degradation rate of catalyst prepared by comparative example 1 to the methyl orange dye of 10mg/L.Due to rare earth metal capture electronics ability compared with
By force, therefore the doping of europium can change the performance of conductor oxidate, can be effectively reduced the compound of photo-generate electron-hole pair
Efficiency.
Fig. 6 mixes europium zinc oxide to three kinds of different dyes (methylene blue, MSDS for prepared by embodiment 1；Rhodamine B,
RodamineB；Methyl orange, MO) degradation rate after degradation 50min and 100min, to the degradation rate of illumination 50min and 100min into
Row compares, it can be seen that is best to the degradation rate of the methylene blue of 10mg/L two time points.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.Separately
Outside, the technical solution between each embodiment can be combined with each other, can be real with those of ordinary skill in the art but must be
Based on existing；It will be understood that the combination of this technical solution not when conflicting or cannot achieve when occurs in the combination of technical solution
In the presence of, also not the present invention claims protection scope within.
Claims (2)
1. a kind of preparation method for mixing europium photocatalyst of zinc oxide, characterized by the following steps:
(1) zinc acetate of 0.5g is dissolved in 20mL dehydrated alcohol, and the NaOH of 0.1g is added, add 0.0879~
The europium nitrate of 0.4229g, stirring 1h get a uniform mixture；
(2) step (1) resulting mixed solution is put into the reaction kettle of teflon lined, is reacted under the conditions of 180 DEG C
5h, then cooling obtains product；
(3) product dehydrated alcohol obtained in step (2) and water washed respectively, be centrifugated 3 times, dried under the conditions of 70 DEG C
Dry 12h places into Muffle furnace 800 DEG C of sintering 1h to get described and mixes europium photocatalyst of zinc oxide material.
2. mixing mix europium photocatalyst of zinc oxide prepared by the preparation method of europium photocatalyst of zinc oxide as described in claim 1
Application in photocatalysis.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246235A (en) * | 2020-09-29 | 2021-01-22 | 浙江万里学院 | Low Eu-doped ZnO photocatalyst and preparation method thereof |
| CN116333642A (en) * | 2022-12-30 | 2023-06-27 | 上海朗亿功能材料有限公司 | Composite EVA material, adhesive film, preparation method and application of adhesive film, and battery assembly |
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