CN106311209A - Application of Al-Ce codoping in improving photocatalytic properties of ZnO micro-powder - Google Patents
Application of Al-Ce codoping in improving photocatalytic properties of ZnO micro-powder Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 32
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 29
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 33
- 239000011701 zinc Substances 0.000 claims abstract description 33
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 14
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 30
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 238000007146 photocatalysis Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 8
- 230000001007 puffing effect Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002243 precursor Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 238000006731 degradation reaction Methods 0.000 abstract description 9
- 239000003054 catalyst Substances 0.000 abstract description 8
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 239000000376 reactant Substances 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 abstract description 2
- 238000003980 solgel method Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 238000007557 optical granulometry Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 88
- 239000011787 zinc oxide Substances 0.000 description 44
- 239000000243 solution Substances 0.000 description 36
- 239000000463 material Substances 0.000 description 18
- 238000006555 catalytic reaction Methods 0.000 description 8
- 239000010949 copper Substances 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 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 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 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 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000036962 time dependent Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 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
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 229910052984 zinc sulfide Inorganic materials 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
-
- B01J35/39—
-
- 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
Abstract
The present invention discloses application of Al-Ce codoping in improving the photocatalytic properties of ZnO micro-powder. Cerium solution is quantified through a sol-gel method, and then zinc solution and aluminum nitrate solution are mixed according to different proportions (Zn<0.97-X>Ce<0.03>Al<X>O, X = 0.00, 0.02, 0.04, 0.06, 0.08 and 0.10), it is shown through the SEM photo analysis of Zn0.97-XCe0.03AlXO that with the increase of Al doping concentration, the improvements of the size uniformity and dispersion performance of doped sample particle are benificial for the suspension and dispersion of a catalyst, at the same time, the adsorbtion of the catalyst on light and the adsorption of the catalyst on reactant molecules can be promoted, so that the photocatalytic properties of samples can be better; it can be clearly seen that with the increase of Al<3+> doping amount, the photocatalytic efficiency of ZnO samples is greatly improved, especially in the case of Zn<0.87>Ce<0.03>Al<0.10>O, after illumination for 4min, the catalytic efficiency of samples is close to 85%, and the variation diagram of degradation rate varying with time is approximately a straight line, the slope of the figure line of overall photocatalytic rate changing with time is large, and the photocatalytic efficiency is excellent.
Description
Technical field
The invention belongs to field of semiconductor materials, be specifically related to Al and Ce codope and improve ZnO micro-powder photocatalytic
The application of energy.
Background technology
The New Times of 21 century, we also cause threat to environment while the social development productivity energetically.Along with
Industrialization, modernization are constantly accelerated, and have been discharged substantial amounts of toxic organics in water and air, are enriched with in human body
The health of serious threat people.And majority of organic pollutants is difficult to degrade by common method, therefore, a kind of simplicity of exploitation has
It is one problem demanding prompt solution of human society that the method for effect carrys out degradable organic pollutant.Semiconductor light-catalyst and urging at light
The application in change field, is the most viable scheme of current degradable organic pollutant.As a kind of method of novel process pollutant, light
Catalytic degradation technology is owing to easy and simple to handle, nontoxic, energy-conservation, life-span length, reaction condition are gentle, will not produce secondary pollution and quilt
It is widely used.Wide bandgap semiconductor materials such as ZnSe and GaN is active in forefront the most always.Recently, another kind of broad-band gap half
Conductor material oxidation zinc (ZnO) causes the concern of people too.
ZnO, as a kind of novel third generation semi-conducting material, is important II-VI group conductor oxidate, is also one
Kind there is the direct band gap semiconductor material with wide forbidden band of piezoelectricity and photoelectric characteristic, additionally, ZnO due to cheap, plasticity strong,
The series of advantages such as quantum effect is high make it be preferably applied for organic pollutant degradation.Micron ZnO has abundant structure, this
A little nanostructureds, often due to size is little, shows many characteristics not available for traditional Z nO, become field of semiconductor materials
One of study hotspot.Energy gap at room temperature is about 3.37eV, and the photon wavelength launched is in black light wave band, its
Exciton bind energy is up to 60meV, ionization energy 26meV provided far above room temperature thermal excitation so that the exciton of ZnO can be in room
The lower stable existence of temperature.Therefore, ZnO material at room temperature or easily realizes low excitation threshold and greater efficiency under higher temperature
Laser emission.
Therefore, we are badly in need of exploring a kind of simple process improving ZnO photocatalysis performance, ensure that simultaneously low cost,
Characteristic simple to operate, the shortest, high efficiency.
Summary of the invention
For defect of the prior art and deficiency, the present invention finds Ce and Al codope is entered ZnO micron by research
After in powder body, the homogenization of sample particle size and the raising of dispersive property are conducive to the suspended dispersed of catalyst, also can promote simultaneously
Enter the catalyst absorption to light and the absorption of reactant molecule, make the photocatalysis performance of sample more preferably realize organic pollution
Degraded rapidly and efficiently.
The technical scheme that the present invention takes is:
Al and Ce codope strengthens the application of ZnO micro-powder photocatalysis performance.
Concrete, Al and Ce is mixed the photocatalysis performance strengthening ZnO micro-powder in ZnO micro-powder, it is micro-that Ce accounts for ZnO
The mole percent of rice flour body is 3%, and it is 0～10% that Al accounts for the mole percent of ZnO micro-powder.
Al and Ce mixes the photocatalysis performance strengthening ZnO micro-powder in ZnO micro-powder, and Ce accounts for ZnO micro-powder
Mole percent be 3%, it is 2～10% that Al accounts for the mole percent of ZnO micro-powder.
Further, the method that Al and Ce mixes in ZnO micro-powder is included: by cerium solution, zinc solution, aluminum solutions and
Colloidal sol is formed after citric acid solution mixing；Forming precursor after colloidal sol dehydration, precursor is obtained doped with Al and Ce by sintering
ZnO micro-powder.
Concrete, cerium solution, zinc solution and aluminum solutions are according to Zn0.97-XCe0.03AlXO, X=0.00,0.02,0.04,
0.06, the molar ratio mixing of 0.08 or 0.10, citric acid concentration in colloidal sol is 0.3mol/L.
Further, described sintering temperature is 400 DEG C, and sintering time is 2h.
It addition, described colloidal sol dries 13h at 80 DEG C forms xerogel, xerogel is incubated 9h dewatering and puffing at 130 DEG C
Obtain presoma；Presoma pulverize last at 400 DEG C sinter 2h obtain ZnO micro-powder.
Advantages of the present invention and good effect are as follows:
(1) zinc solution and aluminum nitrate solution are mixed (Zn according to different proportion by the present invention0.97-XCe0.03AlXO, X=0.00,
0.02,0.04,0.06,0.08,0.10), along with the increase of Al doping content, Zn0.97-XCe0.03AlXThe SEM photograph of O system divides
Analysis shows, after doping, the homogenization of sample particle size and the raising of dispersive property are beneficial to the suspended dispersed of catalyst, with
Time also can promote the catalyst absorption to light and the absorption of reactant molecule, the photocatalysis performance making sample is more preferable；
(2) it is clear that along with Al3+The increase of volume, the photocatalysis efficiency of ZnO sample has had obviously
Improve, especially at Zn0.87Ce0.03Al0.10In the case of O, illumination 4 minutes, the catalytic efficiency of sample has just reached close
85%, and degradation rate figure over time is close to straight line, and overall light catalytic rate time dependent figure line slope is very
Greatly, photocatalysis efficiency is excellent；
(3) sol-gal process of the present invention has simple to operate, low cost, and reaction is easily carried out, the temperature required feature such as low,
By two kinds of element codope zinc oxide of Ce and Al, realize the degraded fast and effectively to organic pollution methyl orange, this
Simple and effective photocatalytic degradation method, is expected to promote research and the application of catalysis material.
Accompanying drawing explanation
Fig. 1～Fig. 6 is the X ray diffracting spectrum of the zinc oxide micrometer material of embodiment one to six successively；
Fig. 7～Figure 12 is that the zinc oxide micrometer material of embodiment one to six amplifies 5000 times (left) and 10000 times successively
The scanning electron microscope diagram of (right)；
Figure 13～Figure 15 is the zinc oxide micrometer material light catalysis agent section degradation rate figure in time of embodiment one to six；
Figure 16 is the zinc oxide micrometer material light catalysis agent section degradation rate figure in time of comparative example one；
Below in conjunction with Figure of description be embodied as formula the present invention is illustrated.
Detailed description of the invention
The purpose of the present invention aims to provide a kind of controllable growth technique strengthening ZnO optical property, mainly uses colloidal sol
Gel method, adulterates the aluminum of variable concentrations and enters ZnO nano material, effectively controls ZnO light by the doping content of regulation aluminum
Catalytic performance, overcomes shortcoming and the difficulty of prior art, this simple and effective method that can strengthen optical property, is expected to
Promote research and the application of catalysis material.
By changing the doping content with aluminium element, it is achieved that the preparation of the aluminum doping ZnO micro-powder of variable concentrations, with
Al3+The increase of volume, the photocatalytic speed of ZnO sample has had obviously strengthens, and overall degradation rate is in time
Variation diagram is close to straight line, and overall light catalytic rate time dependent figure line slope is very big, light-catalyzed reaction occur rapidly and
Substantially, and along with Al3+The increase of volume does not has downward trend, so it is pole that visible Al and Ce is co-doped with ZnO micro-powder
For preferable catalysis material.
Below in conjunction with embodiment, the present invention is illustrated:
Embodiment one:
The preparation method of the nano zinc oxide material of the present embodiment includes:
Step one: preparation molar concentration is the Zn (NO of 0.1mol/L respectively3)2·6H2O, molar concentration are 0.1mol/L's
Al(NO3)2·6H2O, concentration are the Ce (NO of 0.1mol/L3)3·12H2O, molar concentration are the C of 0.3mol/L6H8O7·H2O is molten
Liquid, by three kinds of solution magnetic agitation 30 minutes respectively；
Step 2: quantitatively cerous nitrate solution, then by zinc nitrate solution and aluminum nitrate solution according to Zn0.97Ce0.03The ratio of O
Example mixes, and mixed solution is mixed magnetic agitation 3 hours with the citric acid solution prepared, in order to form colloidal sol, and colloidal sol
The concentration of middle citric acid is 0.3mol/L.
Step 3: colloidal sol is put in 80 DEG C of drying bakers and be incubated 13 hours, in order to form xerogel.Xerogel is put into
130 DEG C of drying bakers are incubated 9 hours, obtain presoma in order to dewatering and puffing；
Step 4: be fully ground presoma to powder in agate mortar, is finally putting in 400 DEG C of Muffle furnaces sintering 2
Hour, obtain powder sample, to be measured.
Embodiment two:
The present embodiment is unlike embodiment one: quantitatively cerium solution, then by zinc solution with 95% and cerous nitrate solution
3% proportionally mixes (Zn0.95Ce0.03Al0.02O)。
Embodiment three:
The present embodiment is unlike embodiment one: quantitatively cerium solution, then by zinc solution with 93% and aluminum nitrate solution
4% proportionally mixes (Zn0.93Ce0.03Al0.04O)。
Embodiment four:
The present embodiment is unlike embodiment one: quantitatively cerium solution, then by zinc solution with 91% and aluminum nitrate solution
6% proportionally mixes (Zn0.91Ce0.03Al0.06O)。
Embodiment five:
The present embodiment is unlike embodiment one: quantitatively cerium solution, then by zinc solution with 89% and aluminum nitrate solution
8% proportionally mixes (Zn0.89Ce0.03Al0.08O)。
Embodiment six:
The present embodiment is unlike embodiment one: quantitatively cerium solution, then by zinc solution with 87% and aluminum nitrate solution
10% proportionally mixes (Zn0.87Ce0.03Al0.10O)。
The zinc oxide micrometer sheet that embodiment one, two, three, four, five and six is prepared structure, pattern and photocatalysis respectively
Performance is tested, and photocatalysis uses the methyl orange solution that photocatalytic degradation concentration is 20mg/L, with Al3+Volume is successively
Be 0%, 2%, 4%, 6%, 8%, 10% ZnO sample be 20ml as photocatalyst, the consumption of methyl orange, use xenon source
Prolonged exposure, light application time is each one to six minutes, takes four times, and methyl orange concentration is 20mg/L.
(1) variable concentrations aluminum of the present invention doping zinc oxide micrometer material X ray diffracting spectrum (see Fig. 1-Fig. 6) and
The local contrast figure (Fig. 7) at six stack features peaks shows, the sample products prepared is the oxidation of hexagonal crystal system wurtzite structure
Zinc, the peak type at these peaks is sharp-pointed, and half-peak breadth is narrower, shows that sample has the highest degree of crystallinity, goes out simultaneously before three strongest ones peak
Show the impurity peaks that intensity is more weak, but, along with the increase of Al element doping concentration, impurity peaks intensity gradually weakens, when Al mixes
The when that miscellaneous concentration reaching 10%, impurity peaks disappears.
Fig. 8-Figure 12 is that sample amplifies 5000 times (left) and the scanning electron microscope diagram of 10000 times (right), comprehensively respectively
The SEM photograph analysis of above sample shows, the pattern to ZnO that adulterates has an impact, along with the increase of Al doping content, the shape of sample
Looks are gradually become the pertusate laminated structure of band by graininess, additionally, the dispersibility of sample also improves.
(3) present invention is by changing the doping content of aluminum, it is clear that along with Al3+The increase of volume, Zn0.97- XCe0.03AlXThe photocatalytic speed of O sample has had and has obviously improved, especially in the molar concentration 3% of Ce and Al codope
With 10% in the case of (Zn0.87Ce0.03Al0.10O), the degradation rate of 4 minutes light application time methyl orange solutions has just reached close
85%, and overall degradation rate figure over time is close to straight line, and the time dependent figure line of overall light catalytic rate is oblique
Rate is very big, and photocatalysis efficiency is the highest, and therefore, it is excellent catalysis material that Al and Ce is co-doped with ZnO micron film, below figure (figure
13-Figure 15).
Comparative example one:
The preparation method of the zinc oxide micrometer material of the present embodiment includes:
Step one: preparation molar concentration is the Zn (NO of 0.1mol/L respectively3)2·6H2O, molar concentration are 0.1mol/L's
Cu(NO3)2·3H2O, concentration are the Ce (NO of 0.1mol/L3)3·12H2O, molar concentration are the C of 0.3mol/L6H8O7·H2O is molten
Liquid, by three kinds of solution magnetic agitation 30 minutes respectively；
Step 2: copper solution accounts for 3%, then proportionally mixes zinc solution with 87% and cerous nitrate solution 10%
(Zn0.97Cu0.03O), mixed solution is mixed with the citric acid solution prepared, magnetic agitation 3 hours, molten in order to be formed
Glue, in colloidal sol, the concentration of citric acid is 0.3mol/L.
Step 3: colloidal sol is put in 80 DEG C of drying bakers and be incubated 13 hours, in order to form xerogel.Xerogel is put into
In 130 DEG C of drying bakers, insulation insulation 9 hours, obtain presoma in order to dewatering and puffing；
Step 4: be fully ground presoma to powder in agate mortar, is finally putting in 400 DEG C of Muffle furnaces sintering 2
Hour, obtain powder sample, to be measured.
Photocatalysis performance result is shown in Figure 16, Zn0.87Cu0.03Ce0.10The photocatalysis performance curve chart of O sample, result table in figure
Bright, after being adulterated by Cu and Ce, along with the prolongation of photocatalysis time, catalytic efficiency improves, but with the ZnO sample of Al and Ce codope
The photocatalysis performance of product is compared, and efficiency does not has the good of the sample of Al and Ce codope ZnO, the sample photocatalysis 4 of Cu and Ce doping
Hour, catalytic efficiency has just reached about 50%, and the catalysis that the ZnO micro materials of Al and Ce codope is in minutes is imitated
Fruit is the most all than sample good of Cu and Ce doping.
Claims (7)
1.Al and Ce codope strengthens the application of ZnO micro-powder photocatalysis performance.
Apply the most as claimed in claim 1, it is characterised in that Al and Ce is mixed in ZnO micro-powder and strengthen ZnO micropowder
The photocatalysis performance of body, it is 3% that Ce accounts for the mole percent of ZnO micro-powder, and Al accounts for the mole percent of ZnO micro-powder and is
0～10%.
Apply the most as claimed in claim 1, it is characterised in that Al and Ce is mixed in ZnO micro-powder and strengthen ZnO micropowder
The photocatalysis performance of body, it is 3% that Ce accounts for the mole percent of ZnO micro-powder, and Al accounts for the mole percent of ZnO micro-powder and is
2～10%.
4. the application as described in claim 1,2 or 3, it is characterised in that Al and Ce is mixed the method bag in ZnO micro-powder
Include: after cerium solution, zinc solution, aluminum solutions and citric acid solution being mixed, form colloidal sol；Precursor, front body is formed after colloidal sol dehydration
Body obtains the ZnO micro-powder doped with Al and Ce by sintering.
Apply the most as claimed in claim 4, it is characterised in that cerium solution, zinc solution and aluminum solutions are according to Zn0.97- XCe0.03AlXThe molar ratio mixing of O, X=0.00,0.02,0.04,0.06,0.08 or 0.10, dense in colloidal sol of citric acid
Degree is 0.3mol/L.
Applying the most as claimed in claim 4, it is characterised in that described sintering temperature is 400 DEG C, sintering time is 2h.
Apply the most as claimed in claim 4, it is characterised in that described colloidal sol is dried 13h at 80 DEG C and formed xerogel, dry solidifying
Glue is incubated 9h dewatering and puffing at 130 DEG C and obtains presoma；Presoma pulverize last at 400 DEG C sinter 2h obtain ZnO
Micro-powder.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395710A (en) * | 2018-08-20 | 2019-03-01 | 浙江师范大学 | A kind of preparation method of cerium, carbon co-doped zinc oxide |
| CN115055192A (en) * | 2022-06-16 | 2022-09-16 | 中南大学 | Al 3+ /Zn 0.4 (CuGa) 0.3 Ga 2 S 4 Composite material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650857A (en) * | 2015-01-30 | 2015-05-27 | 长安大学 | Application of copper ions for enhancing visible light emission intensity of ZnO nanometer material |
| CN104971708A (en) * | 2015-07-03 | 2015-10-14 | 陕西科技大学 | Ce-doped spherical ZnO photocatalyst applicable to treatment of dye wastewater and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650857A (en) * | 2015-01-30 | 2015-05-27 | 长安大学 | Application of copper ions for enhancing visible light emission intensity of ZnO nanometer material |
| CN104971708A (en) * | 2015-07-03 | 2015-10-14 | 陕西科技大学 | Ce-doped spherical ZnO photocatalyst applicable to treatment of dye wastewater and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| JIA HONG ZHENG ET AL.: "Synthesis and characterization of Al-Y co-doped ZnO powders with high photocatalytic properties", 《OPTOELECTRONICS AND ADVANCED MATERIALS–RAPID COMMUNICATIONS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395710A (en) * | 2018-08-20 | 2019-03-01 | 浙江师范大学 | A kind of preparation method of cerium, carbon co-doped zinc oxide |
| CN109395710B (en) * | 2018-08-20 | 2021-05-25 | 浙江师范大学 | Preparation method of cerium and carbon co-doped zinc oxide |
| CN115055192A (en) * | 2022-06-16 | 2022-09-16 | 中南大学 | Al 3+ /Zn 0.4 (CuGa) 0.3 Ga 2 S 4 Composite material and preparation method and application thereof |
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