CN105536772B - A kind of preparation method of hetero-junctions nano-photocatalyst material and the application of the material - Google Patents
A kind of preparation method of hetero-junctions nano-photocatalyst material and the application of the material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 29
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910002370 SrTiO3 Inorganic materials 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910002900 Bi2MoO6 Inorganic materials 0.000 claims abstract description 37
- 229910002367 SrTiO Inorganic materials 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 238000006731 degradation reaction Methods 0.000 claims abstract description 9
- 239000000975 dye Substances 0.000 claims abstract description 8
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000001621 bismuth Chemical class 0.000 claims abstract description 6
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims description 24
- 229910021641 deionized water Inorganic materials 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000001291 vacuum drying Methods 0.000 claims description 12
- 229910003074 TiCl4 Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 230000003197 catalytic effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 8
- 230000001699 photocatalysis Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 4
- 229910019626 (NH4)6Mo7O24 Inorganic materials 0.000 claims description 3
- JHXKRIRFYBPWGE-UHFFFAOYSA-K bismuth chloride Chemical compound Cl[Bi](Cl)Cl JHXKRIRFYBPWGE-UHFFFAOYSA-K 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 3
- 239000010919 dye waste Substances 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 30
- 239000003054 catalyst Substances 0.000 abstract description 20
- 238000001035 drying Methods 0.000 abstract description 4
- 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 abstract description 4
- 229940043267 rhodamine b Drugs 0.000 abstract description 4
- 238000013019 agitation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 21
- 238000007146 photocatalysis Methods 0.000 description 7
- 238000002835 absorbance Methods 0.000 description 6
- 229910052724 xenon Inorganic materials 0.000 description 6
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 6
- 229910003208 (NH4)6Mo7O24·4H2O Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 241000165940 Houjia Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 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
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 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 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/31—Chromium, molybdenum or tungsten combined with bismuth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- 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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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
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Abstract
The invention discloses the application of a kind of preparation method of hetero-junctions nano-photocatalyst material and the material.The photocatalyst material is by SrTiO3And Bi2MoO6The hetero-junctions catalyst formed by secondary hydro-thermal method, its preparation method are as follows:By TiCl under ultrasonic agitation4With Sr (OH)2·8H2After the mixing of O solution, NaOH solution is added, obtained presoma is placed in water heating kettle and heated, nanoscale SrTiO is obtained after the scrubbed drying of product3；Bismuth salt is completely dissolved in SrTiO3After solution, molybdate solution is added dropwise, is placed in water heating kettle and heats after ultrasonic agitation, SrTiO is can be obtained by after the scrubbed drying of product3/Bi2MoO6Catalysis material.The present invention prepares the hetero-junctions catalyst with efficient visible light catalysis activity with cheap cost and simple technique.This catalyst can under visible light rhodamine B degradation and with other colour developing groups organic dyestuff.
Description
Technical field
The invention belongs to photocatalysis field, is related to preparing hetero-junctions catalyst material, hetero-junctions using secondary hydro-thermal method
The compound of electron hole can be suppressed, improve catalytic activity, and widened the spectral response range of catalyst, improve solar energy
Utilization rate.
Background technology
Photocatalysis technology is widely paid close attention to due to can thoroughly be decomposed organic matter by the method for chemical oxidation.
But there is a unavoidable defect during photocatalytically degradating organic dye：In illumination condition lower semiconductor catalyst
Caused electronics and hole can recombine, and cause only a small amount of electronics and hole to participate in redox reaction.
Semi-conducting material can solve this problem by forming hetero-junctions, and hetero-junctions contributes in light-catalyzed reaction
The transfer of electric charge is produced in journey, electronics and hole is efficiently separated, so as to improve the utilization rate of electron hole pair, carries simultaneously
High catalytic activity.Bi2MoO6Due to its good chemical stability, it is cheap and easy to get the advantages that, obtained widely in photocatalysis field
Pay attention to.
SrTiO is utilized in the present invention3And Bi2MoO6Hetero-junctions is formed to improve Bi2MoO6The photocatalysis of this semiconductor is lived
Property.And this hetero-junctions catalyst material preparation method is simple, raw material is cheap and easy to get, without high-temperature calcination, and will not cause
Secondary pollution, it is a kind of green photochemical catalyst.
The content of the invention：
Technical problem：It is an object of the invention to provide a kind of preparation method of hetero-junctions nano-photocatalyst material and the material
The application of material, effectively to suppress traditional Bi2MoO6Electron hole pair is compound in catalysis material, so as to improve its photocatalysis drop
Solve the efficiency of organic dyestuff.
The content of the invention：In order to solve the above technical problems, the invention provides a kind of system of hetero-junctions nano-photocatalyst material
Preparation Method, SrTiO3And Bi2MoO6Hetero-junctions is formed, is advantageous to the separation in electronics and hole, under visible light with efficient light
Catalytic activity, its preparation method comprise the following steps：
Step 1：Prepare SrTiO3：By TiCl4With Sr (OH)2·8H2O presses 2-5:0.1-5 mol ratio dissolving, Ran Houjia
Enter 10-15mL 6mol/L NaOH solutions, be transferred to after being sufficiently stirred in water heating kettle, 20-40h is heated at 100-180 DEG C, instead
Room temperature is cooled to after should terminating, is washed with deionized, nanoscale SrTiO is obtained after vacuum drying3Powder；
Step 2：Prepare SrTiO3/Bi2MoO6Hetero-junctions：Take the SrTiO prepared in step 13The bismuth of sample and 5-10mmol
Salt, which is dissolved in deionized water, is ultrasonically formed dispersion liquid, wherein SrTiO3Mass fraction is 1-15%, takes 1.5-3mmol molybdate
It is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, is transferred to after stirring in water heating kettle, at 120-200 DEG C
Lower heating 12-24h；Reaction is cooled to room temperature after terminating, and is washed with deionized, and vacuum drying can obtain product SrTiO3/
Bi2MoO6。
Preferably, first by SrTiO3And Bi2MoO6Method by secondary hydro-thermal forms hetero-junctions, the photochemical catalyst material
SrTiO in material3Mass fraction can influence the degradation efficiency of organic dyestuff, and the catalytic activity of hetero-junctions is with SrTiO3's
The increase of mass fraction, the trend of reduction after first increasing is presented.
Preferably, bismuth salt is Bi (NO3)3·5H2O、NaBiO3·3.5H2O、BiCl3·2H2One kind in O；Molybdate is
Na2MO4·2H2O、(NH4)6Mo7O24·4H2One kind in O.
Present invention also offers the application of hetero-junctions nano-photocatalyst material, SrTiO3And Bi2MoO6Hetero-junctions is formed, is had
Beneficial to electronics and hole point application, hetero-junctions catalyst degrading organic dye waste water under visible light.
Beneficial effect：
It is of the invention compared with existing wastewater by photocatalysis material, there is advantages below：
1. not only raw material is cheap and easy to get by the present invention, reaction condition is simple, and the catalytic activity of photochemical catalyst is good, degraded effect
Rate is high.
2. SrTiO prepared by the present invention3/Bi2MoO6High efficiency photocatalyst belongs to hetero-junctions category, by adjusting SrTiO3
Mass fraction, that effectively accelerates carrier migrates speed, suppresses Bi2MoO6Middle electron hole it is compound, so as to effectively improve
The efficiency of photocatalytically degradating organic dye.
3. due to SrTiO3Addition so that spectral response range is widened significantly, can effectively improve the utilization of solar energy
Rate.
Embodiment
The invention discloses a kind of preparation method and applications of hetero-junctions nano-photocatalyst material.The photocatalyst material
It is by SrTiO3And Bi2MoO6The hetero-junctions catalyst formed by secondary hydro-thermal method, its preparation method are as follows：It is being stirred by ultrasonic
It is lower by TiCl4With Sr (OH)2·8H2After the mixing of O solution, NaOH solution is added, obtained presoma is placed in water heating kettle and added
Heat, nanoscale SrTiO is obtained after the scrubbed drying of product3；Bismuth salt is completely dissolved in SrTiO3After solution, molybdate is added dropwise
Solution, it is placed in after ultrasonic agitation in water heating kettle and heats, SrTiO is can be obtained by after the scrubbed drying of product3/Bi2MoO6Photocatalysis
Material.The present invention prepares the hetero-junctions with efficient visible light catalysis activity with cheap cost and simple technique and is catalyzed
Agent.This catalyst can under visible light rhodamine B degradation and with other colour developing groups organic dyestuff.
The preparation method of hetero-junctions nano-photocatalyst material provided by the invention, SrTiO3And Bi2MoO6Form hetero-junctions,
Be advantageous to the separation in electronics and hole, comprise the following steps under visible light with efficient photocatalytic activity, its preparation method：
Step 1：Prepare SrTiO3：By TiCl4With Sr (OH)2·8H2O presses 2-5:0.1-5 mol ratio dissolving, Ran Houjia
10-15mL 6mol/L NaOH solutions, are transferred in water heating kettle after being sufficiently stirred, and 20-40h is heated at 100-180 DEG C, reaction
Room temperature is cooled to after end, is washed with deionized, nanoscale SrTiO is obtained after vacuum drying3Powder；
Step 2：Prepare SrTiO3/Bi2MoO6Hetero-junctions：Take the SrTiO prepared in step 13The bismuth of sample and 5-10mmol
Salt, which is dissolved in deionized water, is ultrasonically formed dispersion liquid, wherein SrTiO3Mass fraction is 1-15%, takes 1.5-3mmol molybdate
It is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, is transferred to after stirring in water heating kettle, at 120-200 DEG C
Lower heating 12-24h；Reaction is cooled to room temperature after terminating, and is washed with deionized, and vacuum drying can obtain product SrTiO3/
Bi2MoO6。
First by SrTiO3And Bi2MoO6Method by secondary hydro-thermal forms hetero-junctions, in the photocatalyst material
SrTiO3Mass fraction can influence the degradation efficiency of organic dyestuff, and the catalytic activity of hetero-junctions is with SrTiO3Quality
The increase of fraction, the trend of reduction after first increasing is presented.
Bismuth salt is Bi (NO3)3·5H2O、NaBiO3·3.5H2O、BiCl3·2H2One kind in O；Molybdate is Na2MO4·
2H2O、(NH4)6Mo7O24·4H2One kind in O.
SrTiO3And Bi2MoO6Hetero-junctions is formed, is advantageous to the application divided in electronics and hole, the hetero-junctions catalyst exists
Degrading organic dye waste water under visible ray.
Embodiment 1：
By 2.2mL TiCl4With 2.78g Sr (OH)2·8H2O is dissolved in 40mL deionized water, and is added dropwise
14mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 35h is heated at 120 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 3h at 85 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.2135g is dissolved in deionized water after ultrasonic disperse, adds 6.7935g Bi (NO3)3·5H2O continues to be stirred by ultrasonic, and takes
1.6438g Na2MO4·2H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, water is transferred to after stirring
In hot kettle, 12h is heated at 180 DEG C；Reaction is cooled to room temperature after terminating, and is washed with deionized successively, vacuum drying
Obtain product SrTiO3/Bi2MoO6.By 0.30g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L methyl orange solution,
After being stirred vigorously 30min, irradiated by 105min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate drop
Solution rate is 81.95%.
Embodiment 2：
By 3.0mL TiCl4With 2.63g Sr (OH)2·8H2O is dissolved in 42mL deionized water, and is added dropwise
13mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 20h is heated at 160 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 4h at 85 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.3416g is dissolved in deionized water after ultrasonic disperse, adds 6.8251g Bi (NO3)3·5H2O continues to stir, and takes
1.2326g(NH4)6Mo7O24·4H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, is shifted after stirring
Into water heating kettle, 15h is heated at 200 DEG C；Reaction is cooled down after terminating, and is washed with deionized, and vacuum drying can be produced
Thing SrTiO3/Bi2MoO6.By 0.35g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L rhodamine B solution, acutely
After stirring 30min, irradiated by 120min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate degradation rate
For 95%.
Embodiment 3：
By 1.1mL TiCl4With 2.71g Sr (OH)2·8H2O is dissolved in 41mL deionized water, and is added dropwise
12mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 36h is heated at 180 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 4h at 80 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.1585g is dissolved in deionized water after ultrasonic disperse, adds 5.7989g Bi (Cl)3·2H2O continues to stir, and takes
1.2509g(NH4)6Mo7O24·4H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, is shifted after stirring
Into water heating kettle, 24h is heated at 200 DEG C；Reaction is cooled down after terminating, and is washed with deionized, and vacuum drying can be produced
Thing SrTiO3/Bi2MoO6.By 0.25g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L methylene blue solution, acutely
After stirring 30min, irradiated by 90min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate degradation rate
For 91.86%.
Embodiment 4：
By 3.3mL TiCl4With 2.59g Sr (OH)2·8H2O is dissolved in 42mL deionized water, and is added dropwise
12mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 36h is heated at 160 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 3h at 80 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.3416g is dissolved in deionized water after ultrasonic disperse, adds 5.8123g Bi (Cl)3·2H2O continues to be stirred by ultrasonic, and takes
1.6326g Na2MO4·2H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, water is transferred to after stirring
In hot kettle, 24h is heated at 200 DEG C；Reaction is cooled to room temperature after terminating, and is washed with deionized, and vacuum drying is i.e. available
Product SrTiO3/Bi2MoO6.By 0.35g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L methyl orange solution, acutely
After stirring 30min, irradiated by 105min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate degradation rate
For 88.64%.
Embodiment 5：
By 2.4mL TiCl4With 2.72g Sr (OH)2·8H2O is dissolved in 43mL deionized water, and is added dropwise
13mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 40h is heated at 150 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 4h at 85 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.2534g is dissolved in deionized water after ultrasonic disperse, adds 6.7968g Bi (NO3)3·5H2O continues to be stirred by ultrasonic, and takes
1.5478g Na2MO4·2H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, water is transferred to after stirring
In hot kettle, 18h is heated at 200 DEG C；Reaction is cooled to room temperature after terminating, and is washed with deionized, and vacuum drying is i.e. available
Product SrTiO3/Bi2MoO6.By 0.30g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L methylene blue solution, acute
After strong stirring 30min, irradiated by 90min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate degraded
Rate is 81.35%.
Embodiment 6：
By 2.0mL TiCl4With 2.68g Sr (OH)2·8H2O is dissolved in 41mL deionized water, and is added dropwise
12mL 6mol/L NaOH solutions, are transferred in water heating kettle after stirring, and 36h is heated at 180 DEG C, and reaction is cooled to room after terminating
Temperature, it is washed with deionized, is dried in vacuo 4h at 85 DEG C, you can obtain SrTiO3Powder；Weigh the SrTiO prepared3
Sample 0.6501g is dissolved in deionized water after ultrasonic disperse, adds 6.8257g Bi (NO3)3·5H2O continues to stir, and takes
1.2512g(NH4)6Mo7O24·4H2O is dissolved in deionized water, is then added dropwise in above-mentioned dispersion liquid, is shifted after stirring
Into water heating kettle, 16h is heated at 190 DEG C；Reaction is cooled down after terminating and is washed with deionized, and vacuum drying can obtain product
SrTiO3/Bi2MoO6.By 0.25g SrTiO3/Bi2MoO6Catalyst is dispersed in 45mg/L rhodamine B solution, is acutely stirred
After mixing 30min, irradiated by 150min visible ray xenon lamp, measure its absorbance with spectrophotometer and calculate degradation rate and be
94.34%.
Claims (2)
- A kind of 1. preparation method of hetero-junctions nano-photocatalyst material, it is characterised in that：SrTiO3And Bi2MoO6Form hetero-junctions, Be advantageous to the separation in electronics and hole, comprise the following steps under visible light with efficient photocatalytic activity, its preparation method：Step 1：Prepare SrTiO3：By TiCl4With Sr (OH)2·8H2O presses 2-5:0.1-5 mol ratio dissolving, then adds 10- 15mL 6mol/LNaOH solution, is transferred in water heating kettle after being sufficiently stirred, and 20-40h is heated at 100-180 DEG C, and reaction terminates After be cooled to room temperature, be washed with deionized, nanoscale SrTiO obtained after vacuum drying3Powder；Step 2：Prepare SrTiO3/Bi2MoO6Hetero-junctions：Take the SrTiO prepared in step 13Sample and 5-10mmol bismuth salt are molten Dispersion liquid, wherein SrTiO are ultrasonically formed in deionized water3Mass fraction is 1-15%, takes 1.5-3mmol molybdate to be dissolved in In deionized water, then it is added dropwise in above-mentioned dispersion liquid, is transferred in water heating kettle, 12- is heated at 120-200 DEG C 24h；Reaction is cooled to room temperature after terminating, and is washed with deionized, and vacuum drying can obtain product SrTiO3/Bi2MoO6；By SrTiO3And Bi2MoO6Method by secondary hydro-thermal forms hetero-junctions, SrTiO in the catalysis material3Quality point Number can influence the degradation efficiency of organic dyestuff, and the catalytic activity of hetero-junctions is with SrTiO3Mass fraction increase, be in The trend of reduction after now first increasing；Bismuth salt is Bi (NO3)3·5H2O、NaBiO3·3.5H2O、BiCl3·2H2One kind in O；Molybdate is Na2MO4·2H2O、 (NH4)6Mo7O24·4H2One kind in O.
- 2. hetero-junctions nano-photo catalytic made of the preparation method of hetero-junctions nano-photocatalyst material according to claim 1 The application of material, it is characterised in that：SrTiO3And Bi2MoO6Hetero-junctions is formed, is advantageous to the separation application in electronics and hole, should Hetero-junctions nano-photocatalyst material degrading organic dye waste water under visible light.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500361A (en) * | 2011-11-01 | 2012-06-20 | 南昌航空大学 | Ternary neterogeny structural light degradation organic matter catalyst TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 and preparation method thereof |
| CN104096558A (en) * | 2014-07-11 | 2014-10-15 | 中国人民解放军空军工程大学 | Bi2MoO6-ZnO composite photocatalyst and preparation method thereof |
| CN104368328A (en) * | 2014-01-10 | 2015-02-25 | 天津城建大学 | Bismuth titanate-strontium titanate photocatalytic composite powder and preparation method thereof |
| CN104815684A (en) * | 2015-05-08 | 2015-08-05 | 浙江海洋学院 | Ta3N5/Bi2MoO6 heterostructure fiber photocatalyst and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500361A (en) * | 2011-11-01 | 2012-06-20 | 南昌航空大学 | Ternary neterogeny structural light degradation organic matter catalyst TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 and preparation method thereof |
| CN104368328A (en) * | 2014-01-10 | 2015-02-25 | 天津城建大学 | Bismuth titanate-strontium titanate photocatalytic composite powder and preparation method thereof |
| CN104096558A (en) * | 2014-07-11 | 2014-10-15 | 中国人民解放军空军工程大学 | Bi2MoO6-ZnO composite photocatalyst and preparation method thereof |
| CN104815684A (en) * | 2015-05-08 | 2015-08-05 | 浙江海洋学院 | Ta3N5/Bi2MoO6 heterostructure fiber photocatalyst and preparation method thereof |
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