CN108355669A - A kind of magnetic Nano onion carbon load Bi2WO6Photochemical catalyst and its preparation method and application - Google Patents
A kind of magnetic Nano onion carbon load Bi2WO6Photochemical catalyst and its preparation method and application Download PDFInfo
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- CN108355669A CN108355669A CN201810074928.2A CN201810074928A CN108355669A CN 108355669 A CN108355669 A CN 108355669A CN 201810074928 A CN201810074928 A CN 201810074928A CN 108355669 A CN108355669 A CN 108355669A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 51
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 28
- 241000234282 Allium Species 0.000 title claims abstract description 26
- 235000002732 Allium cepa var. cepa Nutrition 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000006731 degradation reaction Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 16
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000003760 magnetic stirring Methods 0.000 claims description 14
- 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 claims description 12
- 229940043267 rhodamine b Drugs 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 11
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000005119 centrifugation Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000000975 dye Substances 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 229910020350 Na2WO4 Inorganic materials 0.000 claims description 4
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- 239000011941 photocatalyst Substances 0.000 abstract description 21
- 230000001699 photocatalysis Effects 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- 238000006862 quantum yield reaction Methods 0.000 abstract description 3
- 239000000356 contaminant Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 238000002835 absorbance Methods 0.000 description 5
- 238000013019 agitation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 229910052724 xenon Inorganic materials 0.000 description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 125000001261 isocyanato group Chemical group *N=C=O 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000005408 paramagnetism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/888—Tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
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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
- 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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- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
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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
- C02F1/30—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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses a kind of magnetic Nano onion carbon to load Bi2WO6Photochemical catalyst and its preparation method and application.The present invention is with magnetic Nano onion carbon（MCNOs）Magnetic Bi is prepared using hydrothermal method for carrier2WO6/ MCNOs composite photo-catalysts.Raw material of the invention is cheap and easy to get, preparation process is simple；The composite photo-catalyst of preparation supports that uniform, active component is not easily to fall off, stability is high, will not cause secondary pollution to environment；And gained composite photo-catalyst under visible light conditions to target contaminant energy efficient absorption, mineralising；Nano-onions carbon largely inhibits Bi2WO6Photochemical catalyst light induced electron ~ hole it is compound, to improve the photocatalytic activity of catalyst, efficiently solve the photocatalysis technology low difficulty of quantum yield in practical applications；The separation and recovery of the catalyst is more convenient, efficient, is expected to solve the problems, such as that photocatalytic powder is difficult to recycle in suspension system.
Description
Technical field
The present invention relates to a kind of magnetic Nano onion carbon to load Bi2WO6Photochemical catalyst and its preparation method and application, belong to
In photochemical catalyst and its preparing technical field.
Background technology
In recent years, due to environmental problem getting worse, the energy is increasingly in short supply, and exploitation clean energy resource environmental pollution is controlled
Manage it is extremely urgent, photocatalysis technology because its due to the potential application in terms of solving energy shortage and problem of environmental pollution by the country
Outer extensive concern.Traditional catalysis material generally uses the metal oxide or sulfide of larger band gap, in practical applications
There is following shortcoming：（1）Photoresponse narrow range；TiO as conventional semiconductors photochemical catalyst2Energy gap be 3.2eV,
It can only be in ultraviolet region（Only account for the 4% of sunlight ability）There is photocatalytic activity；（2）Quantum yield is low；Due to the limit of material itself
System, light induced electron ~ number of cavities is less or is easy to compound；（3）Separation and recovery of catalyst poor performance；Traditional photocatalytic particle exists
It is difficult to recycle in liquid phase, its application is made to be extremely restricted.Therefore, high activity, wide range response how to be developed and is easy to solid-liquid point
From catalysis material, be promote photocatalysis technology widely applied premise and key in contamination control field.
Bismuth tungstate（Bi2WO6）It is the layer structure with perovskite plate, valence band is formed by Bi6s and O2p orbital hybridizations,
The strong interaction of interorbital reduces symmetry and generates relevant dipole, make it have wider array of visible wavelength response,
Higher oxidation activity and charge mobility.However, existing Bi2WO6Material in environmental applications there is also two hang-ups, one
It is that separation and recovery of catalyst is more difficult；Second is that photoproduction quantum yield is low, photo-generate electron-hole is easily compound to lead to degradation efficiency
It is low, thus need to existing Bi2WO6Further Improvement, to obtain easily recycling and efficient catalysis material.
Invention content
The present invention is intended to provide a kind of magnetic Nano onion carbon loads Bi2WO6Photochemical catalyst and preparation method thereof and answer
With by by the Bi of narrow band gap2WO6Active component is supported on magnetic Nano onion carbon carrier, improve visible absorption performance and
It is separated by solid-liquid separation recyclability.
The present invention uses magnetic Nano onion carbon（Magnetic Carbon Nano Onions, MCNOs）, this is a kind of
Novel nano material, unique hollow structure provide channel for the transmission of electronics；Larger specific surface area can also be reinforced
The absorption of dyestuff and ion-exchange performance accelerate the degradation of organic dyestuff；In addition, the saturated magnetization of the CNOs with Fe-Ni cores
Intensity is good, can realize the Magnetic Isolation of catalyst and dyestuff.Thus, MCNOs is fabulous catalyst carrier, and light can be improved
The degradation efficiency of catalyst simultaneously realizes magnetic recovery to photochemical catalyst.
The present invention provides a kind of magnetic Nano onion carbon to load Bi2WO6Photochemical catalyst, with Bi2WO6For active component,
Using magnetic Nano onion carbon as carrier, by Bi2WO6Active component is supported on magnetic Nano onion carbon carrier and is formed；The catalyst
Include the component of following parts by weight：
Magnetic Nano onion carbon MCNOs：10 ~ 20wt%,
Bi2WO6：80~90wt%.
The present invention provides above-mentioned magnetic Nano onion carbon to load Bi2WO6Photochemical catalyst preparation method, including it is following
Step：
（1）By Bi（NO3）3·5H2O, which is dissolved in nitric acid, forms clear solution A（2.5~3.5mmol/L）, then by Na2WO4·2H2O
It is dissolved in deionized water and forms clear solution B（1.25~1.75mmol/L）, wherein by Bi（NO3）3·5H2O and Na2WO4·
2H2The molar ratio of O is 1.5:1~2:1；
（2）Solution B is added dropwise to the speed of 1 ~ 2mL/min in solution A, white suspension is formed, pH is adjusted with NaOH,
25 ~ 35min of magnetic stirring；
（3）0.11 ~ 0.21g MCNOs are taken to be added in 30-50mL surfactants, 25 ~ 35min of ultrasonic disperse forms MCNOs
Dispersion liquid；
（4）Step is added in scattered MCNOs dispersion liquids（2）In the suspension of gained, 25 ~ 35min of magnetic stirring；
（5）Above-mentioned solution is transferred in the high-temperature high-pressure reaction kettle of polytetrafluoroethyllining lining, carries out hydro-thermal reaction in an oven；
（6）After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with water and absolute ethyl alcohol alternately cleaning, centrifugation, drying
After can be obtained magnetic Bi2WO6/ MCNOs catalyst.
As preferred preparation method, step（2）In pH should be adjusted to 1 ~ 3.
Step（3）Described in the amount of MCNOs should be theoretical Bi2WO6The 10% ~ 20% of quality.
Step（3）Described in surfactant be ethylene glycol.
Step（5）Described in hydrothermal temperature, that is, oven temperature be set as 140 ~ 180 °C, the reaction time is 1 ~ 6h.
Step（6）Described in cleaning be with alternately cleaning 3 ~ 5 times of deionized water and absolute ethyl alcohol；Centrifugal rotational speed is
6000 ~ 8000r/min, centrifugation time are 8 ~ 10min；Drying mode is oven drying, and temperature setting is at 60 ~ 80 °C, when dry
Between be 6 ~ 8h.
The present invention provides above-mentioned magnetic Nano onion carbon to load Bi2WO6Photochemical catalyst drop is catalyzed under visible light conditions
Solve the application in organic dyestuff.
The organic dyestuff is rhodamine B（RhB）.In degradation process, a concentration of 10mg/L, Bi of RhB2WO6/ MCNOs is multiple
The dosage for closing catalyst is 1.0 ~ 1.5g/L.
Bi of the present invention2WO6/ MCNOs composite catalysts are reachable to removal rate of the removal rate of organic dyestuff in 2h
80% or more.
Composite material prepared by the present invention has superparamagnetism, you can completes the magnetism to catalyst by additional magnet
Recycling.Catalyst recycling is convenient, is conducive to reuse.
Beneficial effects of the present invention：
（1）The application is by photocatalytic activity component Bi2WO6Load to MCNOSOn surface, photocatalytic process is on the one hand effectively solved
The losing issue of middle catalyst improves the stability of photochemical catalyst；On the other hand it is provided using the bigger serface of carrier more
Active site, provide more microfabricated chemical reactor places for photocatalytic system, and then cooperate with and improve photocatalytic activity.
（2）The catalyst prepared through the invention is a kind of high efficiency photocatalyst being easy to magnetic recovery, with pure Bi2WO6Phase
Than either absorption property or catalytic degradation performance, the catalyst all have greatly improved.
（3）Using photocatalyst treatment RhB, the pollutant that light reaction 2h can be in degradable water, after the completion of reaction,
The separation of catalyst can be completed with magnet.
（4）Photochemical catalyst is prepared by this method, it is easy to operate, easy to implement, it can be promoted the use of in water pollution control.
Description of the drawings
Fig. 1 is Bi in embodiment 12WO6/ MCNOs, MCNOs and Bi2WO6XRD spectrum；
Fig. 2 is Bi in embodiment 12WO6The SEM figures and EDS figures of/MCNOs；
Fig. 3 is Bi in embodiment 12WO6The hysteresis loop figure of/MCNOs and MCNOs；
Fig. 4 is Bi in embodiment 12WO6/ MCNOs, MCNOs and Bi2WO6Ultraviolet ~ visible spectrogram that diffuses；
Fig. 5 is UV ~ vis scanning figures of RhB solution difference degradation times in embodiment 1；
Fig. 6 is degradation effect figure of the magnetic photocatalyst to 10mg/L RhB of different MCNOs additive amounts.
Specific implementation mode
It is further illustrated the present invention below by embodiment, but is not limited to following embodiment.
Embodiment 1：
A kind of magnetic Nano onion carbon doping bismuth tungstate（Bi2WO6/MCNOs）The preparation method of catalyst, is as follows：
The HNO that 1.455g bismuth nitrates are dissolved in 6mL 2mol/L is weighed first3Middle formation clear solution A, takes 0.495g sodium tungstates molten
Clear solution B is formed in 6mL deionized waters；Solution B is added dropwise in solution A and forms white suspension, is adjusted with NaOH
PH to 3, magnetic stirring 30min；It weighs 0.19g MCNOs again to be added in surfactant ethylene glycol, ultrasonic disperse 30min,
Form MCNOs dispersion liquids；Scattered MCNOs dispersion liquids are added in the above-mentioned suspension for mixing up pH, magnetic stirring 30min shapes
At presoma；Then presoma is transferred in the high-temperature high-pressure reaction kettle with polytetrafluoroethyllining lining, hydro-thermal is anti-under 150 oC
Answer 2h；After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with respectively cleaning 3 times of deionized water and absolute ethyl alcohol, then
At 80 oC magnetic Bi is can be obtained after dry 8h2WO6/ MCNOs photochemical catalysts.
The rhodamine B 200mL of 10mg/L is prepared, 0.2g Bi are then added2WO6/ MCNOs magnetic photocatalysts, are protected from light item
Magnetic agitation 20min reaches adsorption equilibrium after ultrasonic disperse 10min under part；300W xenon lamps are used later and add 420 nm optical filters
As visible light source, reaction time 120min takes a sample every 20min, its absorbance is surveyed after centrifugation.Then with the time
（t）For abscissa, removal rate is that ordinate draws curve, reacts the degradation property of the magnetic photocatalyst（See Fig. 6）, pass through this
Catalyst prepared by kind method is in 2h to the degradation rate of rhodamine B up to 91.1%.
Fig. 1 show Bi2WO6/ MCNOs, MCNOs and Bi2WO6XRD spectrum, by with standard card（PDF No. 73
~1126）Comparison is it is found that Bi2WO6/ MCNOs and Bi2WO6Consistent crystal structure and crystallinity are shown, in addition, in Bi2WO6/
It is found that the characteristic peak of MCNOs in the XRD spectrum of MCNOs, illustrates that MCNOs is successfully combined to Bi2WO6In.
Fig. 2 is Bi2WO6The SEM of/MCNOs compounds schemes, it can be seen that Bi2WO6Sheet is presented and has preferable dispersibility
Energy.
Fig. 3 is Bi2WO6The hysteresis loop of/MCNOs, MCNOs, as can be seen from the figure two kinds of samples are all with good super
Paramagnetism illustrates that additional magnet can achieve the purpose that Magnetic Isolation compound.
Fig. 4 is Bi2WO6/ MCNOs, MCNOs and Bi2WO6Ultraviolet-visible diffuse reflectance spectrum figure, Bi2WO6Optical absorption edge is about
For 445nm, it is known that Bi2WO6Energy gap be 2.75eV.In addition, Bi2WO6/ MCNOs compounds have light in visible light region
The absorption of bigger can accelerate the generation of photo-generate electron-hole.
Fig. 5 is UV ~ vis scanning figures of RhB solution difference degradation times, with the progress of reaction, the peak intensity at 554nm
Gradually weaken, and blue shift occurs, the color of solution is also gradually faded to by rose-red colourless, illustrates that RhB is degraded completion.
Fig. 6 is the magnetic photocatalyst of different MCNOs additive amounts to the degradation effect figure of 10mg/L RhB, show when
When MCNOs additive amounts are 18wt%, catalyst reaches maximum to the degradation effect of RhB, and concrete meaning has in the examples below
Explanation.
Embodiment 2：
The HNO that 1.455g bismuth nitrates are dissolved in 6mL 2mol/L is weighed first3Middle formation clear solution A, takes 0.495g sodium tungstates molten
Clear solution B is formed in 6mL deionized waters；Solution B is added dropwise in solution A and forms white suspension, is adjusted with NaOH
PH to 3, magnetic stirring 30min；It weighs 0.17g MCNOs again to be added in surfactant ethylene glycol, ultrasonic disperse 30min,
Form MCNOs dispersion liquids；Scattered MCNOs dispersion liquids are added in the above-mentioned suspension for mixing up pH, magnetic stirring 30min shapes
At presoma；Then presoma is transferred in the high-temperature high-pressure reaction kettle with polytetrafluoroethyllining lining, hydro-thermal is anti-under 150 oC
Answer 2h；After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with respectively cleaning 3 times of deionized water and absolute ethyl alcohol, then
At 80 oC Bi is can be obtained after dry 8h2WO6/ MCNOs magnetic photocatalysts.
The rhodamine B 200mL of 10mg/L is prepared, 0.2g Bi are then added2WO6/ MCNOs magnetic photocatalysts, are protected from light item
Magnetic agitation 20min reaches adsorption equilibrium after ultrasonic disperse 10min under part；300W xenon lamps are used later and add 420 nm optical filters
As visible light source, reaction time 120min takes a sample every 20min, its absorbance is surveyed after centrifugation.Then with the time
（t）For abscissa, removal rate is that ordinate draws curve, reacts the degradation property of the magnetic photocatalyst（See Fig. 6）, pass through this
Catalyst prepared by kind method is in 2h to the degradation rate of rhodamine B up to 88.6%.
Embodiment 3：
The HNO that 1.455g bismuth nitrates are dissolved in 6mL 2mol/L is weighed first3Middle formation clear solution A, takes 0.495g sodium tungstates molten
Clear solution B is formed in 6mL deionized waters；Solution B is added dropwise in solution A and forms white suspension, is adjusted with NaOH
PH to 3, magnetic stirring 30min；It weighs 0.15g MCNOs again to be added in surfactant ethylene glycol, ultrasonic disperse 30min,
Form MCNOs dispersion liquids；Scattered MCNOs dispersion liquids are added in the above-mentioned suspension for mixing up pH, magnetic stirring 30min shapes
At presoma；Then presoma is transferred in the high-temperature high-pressure reaction kettle with polytetrafluoroethyllining lining, hydro-thermal is anti-under 150 oC
Answer 2h；After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with respectively cleaning 3 times of deionized water and absolute ethyl alcohol, then
At 80 oC Bi is can be obtained after dry 8h2WO6/ MCNOs magnetic photocatalysts.
The rhodamine B 200mL of 10mg/L is prepared, 0.2g Bi are then added2WO6/ MCNOs magnetic photocatalysts, are protected from light item
Magnetic agitation 20min reaches adsorption equilibrium after ultrasonic disperse 10min under part；300W xenon lamps are used later and add 420 nm optical filters
As visible light source, reaction time 120min takes a sample every 20min, its absorbance is surveyed after centrifugation.Then with the time
（t）For abscissa, removal rate is that ordinate draws curve, reacts the degradation property of the magnetic photocatalyst（See Fig. 6）, pass through this
Catalyst prepared by kind method is in 2h to the degradation rate of rhodamine B up to 89.4%.
Embodiment 4：
The HNO that 1.455g bismuth nitrates are dissolved in 6mL 2mol/L is weighed first3Middle formation clear solution A, takes 0.495g sodium tungstates molten
Clear solution B is formed in 6mL deionized waters；Solution B is added dropwise in solution A and forms white suspension, is adjusted with NaOH
PH to 3, magnetic stirring 30min；It weighs 0.13g MCNOs again to be added in surfactant ethylene glycol, ultrasonic disperse 30min,
Form MCNOs dispersion liquids；Scattered MCNOs dispersion liquids are added in the above-mentioned suspension for mixing up pH, magnetic stirring 30min shapes
At presoma；Then presoma is transferred in the high-temperature high-pressure reaction kettle with polytetrafluoroethyllining lining, hydro-thermal is anti-under 150 oC
Answer 2h；After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with respectively cleaning 3 times of deionized water and absolute ethyl alcohol, then
At 80 oC Bi is can be obtained after dry 8h2WO6/ MCNOs magnetic photocatalysts.
The rhodamine B 200mL of 10mg/L is prepared, 0.2g Bi are then added2WO6/ MCNOs magnetic photocatalysts, are protected from light item
Magnetic agitation 20min reaches adsorption equilibrium after ultrasonic disperse 10min under part；300W xenon lamps are used later and add 420 nm optical filters
As visible light source, reaction time 120min takes a sample every 20min, its absorbance is surveyed after centrifugation.Then with the time
（t）For abscissa, removal rate is that ordinate draws curve, reacts the degradation property of the magnetic photocatalyst（See Fig. 6）, pass through this
Catalyst prepared by kind method is in 2h to the degradation rate of rhodamine B up to 83.5%.
Embodiment 5：
The HNO that 1.455g bismuth nitrates are dissolved in 6mL 2mol/L is weighed first3Middle formation clear solution A, takes 0.495g sodium tungstates molten
Clear solution B is formed in 6mL deionized waters；Solution B is added dropwise in solution A and forms white suspension, is adjusted with NaOH
PH to 3, magnetic stirring 30min；It weighs 0.11g MCNOs again to be added in surfactant ethylene glycol, ultrasonic disperse 30min,
Form MCNOs dispersion liquids；Scattered MCNOs dispersion liquids are added in the above-mentioned suspension for mixing up pH, magnetic stirring 30min shapes
At presoma；Then presoma is transferred in the high-temperature high-pressure reaction kettle with polytetrafluoroethyllining lining, hydro-thermal is anti-under 150 oC
Answer 2h；After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with respectively cleaning 3 times of deionized water and absolute ethyl alcohol, then
At 80 oC Bi is can be obtained after dry 8h2WO6/ MCNOs magnetic photocatalysts.
The rhodamine B 200mL of 10mg/L is prepared, 0.2g Bi are then added2WO6/ MCNOs magnetic photocatalysts, are protected from light item
Magnetic agitation 20min reaches adsorption equilibrium after ultrasonic disperse 10min under part；300W xenon lamps are used later and add 420 nm optical filters
As visible light source, reaction time 120min takes a sample every 20min, its absorbance is surveyed after centrifugation.Then with the time
（t）For abscissa, removal rate is that ordinate draws curve, reacts the degradation property of the magnetic photocatalyst（See Fig. 6）, pass through this
Catalyst prepared by kind method is in 2h to the degradation rate of rhodamine B up to 76.8%.
Claims (10)
1. a kind of magnetic Nano onion carbon loads Bi2WO6Photochemical catalyst, it is characterised in that：With Bi2WO6For active component, with magnetic
Property nano-onions carbon be carrier, by Bi2WO6Active component is supported on magnetic Nano onion carbon carrier and is formed；The catalyst includes
Following components in percentage by weight：
Magnetic Nano onion carbon MCNOs：10 ~ 20wt%,
Bi2WO6：80~90 wt%.
2. a kind of magnetic Nano onion carbon described in claim 1 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In including the following steps：
（1）By Bi（NO3）3·5H2O is dissolved in formation clear solution A, a concentration of 2.5-3.5mmol/L of solution A in nitric acid, then will
Na2WO4·2H2O is dissolved in formation clear solution B, a concentration of 1.25-1.75mmol/L of solution B, wherein by Bi in deionized water
（NO3）3·5H2O and Na2WO4·2H2The molar ratio of O is 1.5:1~2:1；
（2）Solution B is added dropwise to the speed of 1 ~ 2mL/min in solution A, white suspension is formed, pH is adjusted with NaOH,
25 ~ 35min of magnetic stirring；
（3）0.11 ~ 0.21g MCNOs are taken to be added in 30 ~ 50mL surfactants, 25 ~ 35min of ultrasonic disperse forms MCNOs
Dispersion liquid；
（4）Step is added in scattered MCNOs dispersion liquids（2）In the suspension of gained, 25 ~ 35min of magnetic stirring；
（5）Above-mentioned solution is transferred in the high-temperature high-pressure reaction kettle of polytetrafluoroethyllining lining, carries out hydro-thermal reaction in an oven；
（6）After reaction kettle is cooled to room temperature, the product in reaction kettle is taken, with water and absolute ethyl alcohol alternately cleaning, centrifugation, drying
Afterwards to get to magnetic Bi2WO6/ MCNOs catalyst.
3. magnetic Nano onion carbon according to claim 2 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In：Step（2）In pH should be adjusted to 1 ~ 3.
4. magnetic Nano onion carbon according to claim 2 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In：Step（3）Described in the amount of MCNOs should be theoretical Bi2WO6The 10 ~ 20% of quality.
5. magnetic Nano onion carbon according to claim 2 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In：The surfactant is ethylene glycol.
6. magnetic Nano onion carbon according to claim 2 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In：Step（5）Described in hydrothermal temperature, that is, oven temperature be set as 140 ~ 180 °C, the reaction time is 1 ~ 6h.
7. magnetic Nano onion carbon according to claim 2 loads Bi2WO6Photochemical catalyst preparation method, feature exists
In：Step（6）Described in cleaning be with alternately cleaning 3 ~ 5 times of deionized water and absolute ethyl alcohol；Centrifugal rotational speed be 6000 ~
8000r/min, centrifugation time are 8 ~ 10min；Drying mode is oven drying, temperature setting at 60 ~ 80 °C, drying time is 6 ~
8h。
8. a kind of magnetic Nano onion carbon described in claim 1 loads Bi2WO6Photochemical catalyst be catalyzed under visible light conditions
Application in degradating organic dye.
9. application according to claim 8, it is characterised in that：The organic dyestuff is rhodamine B, in degradation process, sieve
A concentration of 10mg/L, Bi of red bright B2WO6The dosage of/MCNOs catalyst is 1.0 ~ 1.5g/L.
10. application according to claim 9, it is characterised in that：The Bi2WO6/ MCNOs catalyst is to organic dyestuff sieve
The removal rate of red bright B is in 2h up to 80% or more.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248678A (en) * | 2018-09-29 | 2019-01-22 | 沈阳理工大学 | A kind of preparation method of lightweight bismuth tungstate scavenging material |
| CN111036252A (en) * | 2019-12-05 | 2020-04-21 | 太原理工大学 | Bismuth tungstate quantum dot/magnetic nano onion carbon magnetic composite photocatalyst and preparation method and application thereof |
| CN111068656A (en) * | 2019-11-04 | 2020-04-28 | 江苏大学 | Bi2WO6HRP (horse radish peroxidase) coupled artificial catalyst as well as preparation method and application thereof |
| CN111450823A (en) * | 2020-04-24 | 2020-07-28 | 南京奇安威尔环境科技有限公司 | Composite catalyst GQD/Bi for degrading NO2WO6And method for preparing the same |
| CN113893840A (en) * | 2021-08-31 | 2022-01-07 | 浙江树人学院（浙江树人大学） | Composite photocatalyst, preparation method and application in dye wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008091102A (en) * | 2006-09-29 | 2008-04-17 | Sanyo Electric Co Ltd | Fuel electrode catalyst for fuel cell, electrode/membrane assembly, fuel cell equipped with electrode/membrane assembly, and fuel cell system |
| CN107349927A (en) * | 2017-08-30 | 2017-11-17 | 陕西科技大学 | A kind of laurustinus tufted bismuth tungstate/charcoal composite photocatalyst material and its preparation method and application |
-
2018
- 2018-01-25 CN CN201810074928.2A patent/CN108355669B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008091102A (en) * | 2006-09-29 | 2008-04-17 | Sanyo Electric Co Ltd | Fuel electrode catalyst for fuel cell, electrode/membrane assembly, fuel cell equipped with electrode/membrane assembly, and fuel cell system |
| CN107349927A (en) * | 2017-08-30 | 2017-11-17 | 陕西科技大学 | A kind of laurustinus tufted bismuth tungstate/charcoal composite photocatalyst material and its preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| 肖凌峰 等: "非贵金属助剂在光催化制氢中的应用", 《2017全国光催化材料及创新应用学术研讨会摘要集》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248678A (en) * | 2018-09-29 | 2019-01-22 | 沈阳理工大学 | A kind of preparation method of lightweight bismuth tungstate scavenging material |
| CN109248678B (en) * | 2018-09-29 | 2021-05-14 | 沈阳理工大学 | Preparation method of light bismuth tungstate purification material |
| CN111068656A (en) * | 2019-11-04 | 2020-04-28 | 江苏大学 | Bi2WO6HRP (horse radish peroxidase) coupled artificial catalyst as well as preparation method and application thereof |
| CN111036252A (en) * | 2019-12-05 | 2020-04-21 | 太原理工大学 | Bismuth tungstate quantum dot/magnetic nano onion carbon magnetic composite photocatalyst and preparation method and application thereof |
| CN111450823A (en) * | 2020-04-24 | 2020-07-28 | 南京奇安威尔环境科技有限公司 | Composite catalyst GQD/Bi for degrading NO2WO6And method for preparing the same |
| CN113893840A (en) * | 2021-08-31 | 2022-01-07 | 浙江树人学院（浙江树人大学） | Composite photocatalyst, preparation method and application in dye wastewater |
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