CN107376946A - A kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid - Google Patents
A kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid Download PDFInfo
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- CN107376946A CN107376946A CN201710573296.XA CN201710573296A CN107376946A CN 107376946 A CN107376946 A CN 107376946A CN 201710573296 A CN201710573296 A CN 201710573296A CN 107376946 A CN107376946 A CN 107376946A
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 14
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 14
- 230000003647 oxidation Effects 0.000 title claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010937 tungsten Substances 0.000 claims abstract description 27
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- 238000001354 calcination Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 229910020350 Na2WO4 Inorganic materials 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 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 12
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 12
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims description 12
- 238000003786 synthesis reaction Methods 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000013019 agitation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 abstract description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 12
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000001027 hydrothermal synthesis Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- -1 oxygen hydro carbons Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000005826 halohydrocarbons Chemical class 0.000 description 1
- 230000035987 intoxication Effects 0.000 description 1
- 231100000566 intoxication Toxicity 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical class CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000003403 water pollutant 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/047—Sulfides with chromium, molybdenum, tungsten or polonium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
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- 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
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
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- B01D2257/00—Components to be removed
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Abstract
A kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid, catalyst is using tungsten net as substrate, using hydro-thermal method, in the online growth in situ Bi of tungsten2WO6/In2S3Hetero-junctions.Under the induction of visible ray, 100cm2The online catalyst of tungsten can be by 40000ppm degradation of toluene 90% in 1 hour.The material of the present invention is prepared on the net in tungsten, solves the problems, such as catalyst immobilization, is easy to use quick, is not easily runed off, convenient recovery.
Description
The present invention relates to a kind of preparation method of degraded VOCs oxidation three-dimensional catalytic grids, and in particular to a kind of former in tungsten net
The Bi of position growth2WO6/In2S3The preparation method of catalyst.
Background technology
Volatile organic compoundses (Volatilc Organic Compounds.VOCs) one refer to saturated vapor pressure under normal temperature
More than 70Pa, the compound of low boiling (between 50~260 DEG C of boiling spread) under normal pressure, including aromatic compound (such as toluene,
Dimethylbenzene), aliphatic compound (such as acetone and n- hexanes), oxygen hydro carbons, containing halohydrocarbon, nitrogen hydro carbons and sulphur hydro carbons.Exposed when long
Intoxication accident will be caused in the environment of these Substances Pollutions, serious causes lifelong disability, or even lethal.This kind of material row
After being put into air, what is had can occur photochemical reaction with nitrogen oxides, is formed under the irradiation of sunshine (mainly ultraviolet light)
Photochemical fog, so as to produce contamination hazard in the larger context.
VOCs processing method has two classes：One kind is disruptive method, such as burning method and Production by Catalytic Combustion Process, biological film process
Method etc.；Another kind of is non-destructive method, i.e. what absorption method was commonly used has absorption method, condensation method, membrane separation process.Photochemical catalytic oxidation
Technology is because being considered as most one of technology of prospect the advantage such as energy consumption is low, reaction condition is gentle and artificial light source is easy to get.
Because traditional catalysis material TiO2 energy gaps are 3. 2 eV, it is only capable of absorbing the ultraviolet light in sunshine, and its high photoproduction
Carrier recombination speed causes its photo-quantum efficiency low, and the catalytic oxidation activity under its visible ray is not high.Due to Bi2WO6Band
Gap only has 2.7eV or so, can be widely used by excited by visible light in photocatalytic oxidation air and water pollutant.However,
Pure Bi2WO6 can only absorb the ultraviolet light arrived between visible ray 450nm wavelength, only account for the sub-fraction of solar spectrum；Moreover,
Due to narrow band gap cause photo-generate electron-hole to easily it is compound, limit energy conversion efficiency.It is visible in order to widen Bi2WO6
The scope of photoresponse and the separation for promoting photo-generated carrier, by the low-gap semiconductor of another and Bi2WO6 position of energy band matching
Coupled thereto, complete heterojunction structure can improve quantum yield with the compound of limiting carrier.Photohole, hole and water
The superoxide radical for reacting hydroxyl radical free radical, light induced electron and the oxygen reaction generation of generation has very strong oxidisability, can incite somebody to action
VOCs is oxidized to nontoxic material.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of degraded VOCs oxidation three-dimensional catalytic grids
Preparation method, a kind of new material is provided for VOCs catalytic degradation.The material of the present invention is prepared by hydro-thermal method, and its behaviour does letter
Single, cost is cheap, and yield is higher, good degrading effect, and multiple catalytic effect is constant, reproducible, and the material of the present invention is
Prepared on the net in tungsten, solve the problems, such as catalyst immobilization, be easy to use quick, not easily run off, convenient recovery, also
It can be connected with external circuit, applied bias voltage improves the separative efficiency of photoproduction electricity pair.
1. the present invention is achieved through the following technical solutions：
A kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid, it is characterised in that：It the described method comprises the following steps：
（1）Tungsten net pre-processes：Tungsten net is cut into 20cm × 5cm size, then cleans 30-60min again with third with EtOH Sonicate
Ketone is cleaned by ultrasonic 20-40min, then after being rinsed well with deionized water, is put into temperature as in 90-120 DEG C of electric drying oven with forced convection
Dry, take out standby.
（2）Bi2WO6Synthesis：By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 20-40mL deionized waters, then
Add 0.4-0.8mLHNO3Ultrasonic 20min, then magnetic agitation 2h, obtain solution.Tungsten net volume song is put into reactor and submerged,
24-36h is reacted at 180-200 DEG C, resulting materials is taken out and is cleaned and dried, is placed in tube furnace and leads to nitrogen calcining, 400-500 DEG C of forging
Burn 4-6h.
（3）Bi2WO6/In2S3Synthesis：By Cys and In2Cl3It is 1- to be dissolved into water and ethylene glycol portfolio ratio
2：In 4-7 solvent, ultrasonic 10-30min, pH value of solution is adjusted to neutrality, by Bi2WO6It is put into reactor, it is anti-at 180-200 DEG C
24-36h is answered, Bi2WO6/In is obtained after resulting materials are cleaned with deionized water2S3It is catalyzed grid.
2. step（2）In：Na2WO4·2H2O：Bi(NO3)3·5H2O mass ratioes are 3-4:10.
3 steps（2）In：It is 2-3 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 2-4 DEG C/min.
4. step（3）In：Cys and In2Cl3Mass ratio is 3-4:1.
Brief description of the drawings
Fig. 1 is the embodiment of the present invention 1, embodiment 2, the catalyst Bi of embodiment 32WO6/In2S3X-ray diffractogram.
Fig. 2 is the catalyst Bi of comparative example 1 of the present invention2WO6Scanning electron microscope (SEM) photograph.
Fig. 3 is the catalyst Bi of the present invention2WO6/In2S3Scanning electron microscope (SEM) photograph.
The catalyst Bi of Fig. 4 present invention2WO6/In2S3With comparative example 1, comparative example 2, the light degradation under visible light of blank example 1
The comparison figure of effect.
The beneficial effects of the invention are as follows：
The material of the present invention is prepared by hydro-thermal method, and its is simple to operate, and cost is cheap, and yield is higher, good degrading effect, repeatedly urges
It is constant to change effect, it is reproducible, and also the material of the present invention is prepared on the net in tungsten, solves asking for catalyst immobilization
Topic, it is easy to use quick, not easily runs off, convenient recovery.
Embodiment 1
1.（1）Tungsten net pre-processes：Tungsten net is cut into 20cm × 5cm size, then 30min is cleaned with EtOH Sonicate and uses acetone again
It is cleaned by ultrasonic 20min, then after being rinsed well with deionized water, is put into temperature to be dried in 90 DEG C of electric drying oven with forced convections, takes out
It is standby；
（2）Bi2WO6Synthesis：By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 20mL deionized waters, is added
0.4mLHNO3Ultrasonic 20min, then magnetic agitation 2h, obtain solution.Tungsten net volume song is put into reactor and submerged, it is anti-at 180 DEG C
24h is answered, resulting materials is taken out and is cleaned and dried, is placed in tube furnace and leads to nitrogen calcining, 400 DEG C of calcination 4h；
（3）Bi2WO6/In2S3Synthesis：By Cys and In2Cl3It is 1 to be dissolved into water and ethylene glycol portfolio ratio：4 it is molten
In agent, ultrasonic 10min, pH value of solution is adjusted to neutrality, by Bi2WO6It is put into reactor, reacts 24h at 180 DEG C, by resulting materials
Bi2WO6/In is obtained after being cleaned with deionized water2S3It is catalyzed grid.
2. step（2）In：Na2WO4·2H2O：Bi(NO3)3·5H2O mass is 3:10.
3 steps（2）In：It is 2 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 2 DEG C/min.
4. step（3）In：Cys and In2Cl3Mass ratio is 3:1
Embodiment 2
1.（1）Tungsten net pre-processes：Tungsten net is cut into 20cm × 5cm size, then 45min is cleaned with EtOH Sonicate and uses acetone again
It is cleaned by ultrasonic 30min, then after being rinsed well with deionized water, is put into temperature to be dried in 105 DEG C of electric drying oven with forced convections, takes out
It is standby；
（2）Bi2WO6Synthesis：By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 30 mL deionized waters, is added
0.6mLHNO3Ultrasonic 20min, then magnetic agitation 2h, obtain solution.Tungsten net volume song is put into reactor and submerged, it is anti-at 190 DEG C
30h is answered, resulting materials is taken out and is cleaned and dried, is placed in tube furnace and leads to nitrogen calcining, 450 DEG C of calcination 5h；
（3）Bi2WO6/In2S3Synthesis：By Cys and In2Cl3It is 1.5 to be dissolved into water and ethylene glycol portfolio ratio：
In 5.5 solvent, ultrasonic 20min, pH value of solution is adjusted to neutrality, by Bi2WO6It is put into reactor, 30h is reacted at 190 DEG C, will
Resulting materials obtain Bi2WO6/In after being cleaned with deionized water2S3It is catalyzed grid.
2. step（2）In：Na2WO4·2H2O：Bi(NO3)3·5H2O mass ratioes are 3.5:10.
3 steps（2）In：It is 2.5 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 2.5 DEG C/min.
4. step（3）In：Cys and In2Cl3Mass ratio is 3.5:1.
Embodiment 3
1.（1）Tungsten net pre-processes：Tungsten net is cut into 20cm × 5cm size, then cleans 60min again with third with EtOH Sonicate
Ketone is cleaned by ultrasonic 40min, then after being rinsed well with deionized water, is put into temperature to be dried in 120 DEG C of electric drying oven with forced convections, takes
Go out standby；
（2）Bi2WO6Synthesis：By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 40 mL deionized waters, is added
0.8mLHNO3Ultrasonic 20min, then magnetic agitation 2h, obtain solution.Tungsten net volume song is put into reactor and submerged, 180-200 DEG C
Lower reaction 36h, take out resulting materials and be cleaned and dried, be placed in tube furnace and lead to nitrogen calcining, 500 DEG C of calcination 6h；
（3）Bi2WO6/In2S3Synthesis：By Cys and In2Cl3It is 2 to be dissolved into water and ethylene glycol portfolio ratio：7 it is molten
In agent, ultrasonic 30min, pH value of solution is adjusted to neutrality, by Bi2WO6It is put into reactor, reacts 36h at 200 DEG C, by resulting materials
Bi2WO6/In is obtained after being cleaned with deionized water2S3It is catalyzed grid.
2. step（2）In：Na2WO4·2H2O：Bi(NO3)3·5H2O mass ratioes are 4:10.
3 steps（2）In：It is 3 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 4 DEG C/min.
4. step（3）In：Cys and In2Cl3Mass ratio is 4:1.
Comparative example 1
1.（1）Tungsten net is cut into 20cm × 5cm size, then clean 30min with EtOH Sonicate is cleaned by ultrasonic with acetone again
20min, then after being rinsed well with deionized water, be put into temperature to be dried in 90 DEG C of electric drying oven with forced convections, take out standby；
（2）By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 30mL deionized waters, adds 0.6mLHNO3Ultrasound
20min, then magnetic agitation 2h, obtain solution.Tungsten net volume song is put into reactor and submerged, 30h is reacted at 190 DEG C, takes out institute
Obtain material clean to dry, be placed in tube furnace and lead to nitrogen calcining, 450 DEG C of calcination 5h, Bi is obtained in tungsten net surface2WO6。
2. step（2）In：Na2WO4·2H2O：Bi(NO3)3·5H2O mass ratioes are 4:10.
3 steps（2）In：It is 3 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 4 DEG C/min.
Comparative example 2
1. by Cys and In2Cl3It is 1 to be dissolved into water and ethylene glycol portfolio ratio：In 4 solvent, ultrasonic 10min, then
PH value of solution is adjusted to neutral Cys and In2Cl3Ratio is 4:1；
2. step（1）In：Cys and In2Cl3Mass ratio is 4:1 obtains In2S3。
Blank example 1
Tungsten net is cut into 20cm × 5cm size, then clean 30min with EtOH Sonicate is cleaned by ultrasonic 20min with acetone again, then
After being rinsed well with deionized water, temperature is put into be dried in 90 DEG C of electric drying oven with forced convections, is taken out standby.
Fig. 1 is the embodiment of the present invention 1, embodiment 2, the catalyst Bi of embodiment 32WO6/In2S3X-ray diffractogram.
Fig. 2 is the catalyst Bi of comparative example 1 of the present invention2WO6Scanning electron microscope (SEM) photograph.
Fig. 3 is the catalyst Bi of the present invention2WO6/In2S3Scanning electron microscope (SEM) photograph.
Fig. 4 is with comparative example 1 and comparative example 2, blank example 1, pure Bi2WO6, the In respectively obtained2Cl3And the present invention is real
Apply the Bi2WO6/In that example 3 obtains2Cl3For catalyst, it is 40000ppm toluene gas degradation process variation diagrams to be placed in initial concentration.
Fig. 4 shows the Bi of preparation method synthesis of the present invention2WO6/In2S3It is catalyzed grid material and absorbs speed compared to pure TiO2 and pure Bi2WO6
Rate effect is all obviously improved.
The Bi that the present invention synthesizes2WO6/In2S3Grid is catalyzed under the induction of visible ray, 100cm2The online catalyst 1 of tungsten
Can be by 40000ppm degradation of toluene 90% in hour.The parameter value that the present invention provides is ratio value, amplification or contracting in proportion
It is small, also belong to protection scope of the present invention.
Claims (4)
- A kind of 1. preparation method of degraded VOCs oxidations three-dimensional catalytic grid, it is characterised in that：It the described method comprises the following steps：(1) tungsten net pre-processes：Tungsten net is cut into 20cm × 5cm size, then cleans 30-60min again with third with EtOH Sonicate Ketone is cleaned by ultrasonic 20-40min, then after being rinsed well with deionized water, is put into temperature as in 90-120 DEG C of electric drying oven with forced convection Dry, take out standby；（2）Bi2WO6Synthesis：By Na2WO4·2H2O and Bi (NO3)3·5H2O is dissolved in 20-40mL deionized waters, is added 0.4-0.8mLHNO3Ultrasonic 20min, then magnetic agitation 2h, obtain solution, and tungsten net volume song is put into reactor and submerged, 180- 24-36h is reacted at 200 DEG C, resulting materials is taken out and is cleaned and dried, is placed in tube furnace and leads to nitrogen calcining, 400-500 DEG C of calcination 4- 6h；（3）Bi2WO6/In2S3Synthesis：By Cys and In2Cl3It is 1-2 to be dissolved into water and ethylene glycol portfolio ratio：4-7 Solvent in, ultrasonic 10-30min, pH value of solution is adjusted to neutrality, by Bi2WO6It is put into reactor, reacts 24- at 180-200 DEG C 36h, Bi2WO6/In is obtained after resulting materials are cleaned with deionized water2S3It is catalyzed grid.
- 2. a kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid is characterized in that step as claimed in claim 1（2）： Na2WO4·2H2O：Bi(NO3)3·5H2O mass ratioes are 3-4:10.
- 3. a kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid is characterized in that step as claimed in claim 1（2） In：It is 2-3 DEG C/min that calcination process, which controls heating rate, and rate of temperature fall is 2-4 DEG C/min.
- 4. a kind of preparation method of degraded VOCs oxidations three-dimensional catalytic grid is characterized in that step as claimed in claim 1（3） In：Cys and In2Cl3Mass ratio is 3-4:1.
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| CN108176407A (en) * | 2017-12-13 | 2018-06-19 | 江苏大学 | A kind of Ce-In composite material photocatalysts and preparation method and purposes |
| CN110871066A (en) * | 2019-12-11 | 2020-03-10 | 南昌航空大学 | Preparation method of all-solid-state self-growing bismuth molybdate ultrathin nanosheet semiconductor photocatalyst material |
| CN112264060A (en) * | 2020-10-22 | 2021-01-26 | 盐城工学院 | Ag3PO4-Bi2WO6Preparation method and application of visible light photocatalyst |
| CN114471620A (en) * | 2022-03-09 | 2022-05-13 | 淮北师范大学 | a-SnWO4/In2S3Composite photocatalyst |
| CN114471621A (en) * | 2022-03-09 | 2022-05-13 | 淮北师范大学 | In2S3/Bi2WO6Composite photocatalyst and preparation method thereof |
| CN115400768A (en) * | 2022-09-07 | 2022-11-29 | 常州大学 | Heterojunction CdIn 2 S 4 /Bi 2 WO 6 Application of piezoelectric-optical composite catalyst in piezoelectric photodegradation of organic matters |
| CN115739126A (en) * | 2022-11-29 | 2023-03-07 | 湖北大学 | Application of (ZnS) mIn2S3 photocatalyst in photocatalytic degradation of ethylene and storage and preservation of fruits and vegetables |
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- 2017-07-14 CN CN201710573296.XA patent/CN107376946A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176407A (en) * | 2017-12-13 | 2018-06-19 | 江苏大学 | A kind of Ce-In composite material photocatalysts and preparation method and purposes |
| CN110871066A (en) * | 2019-12-11 | 2020-03-10 | 南昌航空大学 | Preparation method of all-solid-state self-growing bismuth molybdate ultrathin nanosheet semiconductor photocatalyst material |
| CN112264060A (en) * | 2020-10-22 | 2021-01-26 | 盐城工学院 | Ag3PO4-Bi2WO6Preparation method and application of visible light photocatalyst |
| CN114471620A (en) * | 2022-03-09 | 2022-05-13 | 淮北师范大学 | a-SnWO4/In2S3Composite photocatalyst |
| CN114471621A (en) * | 2022-03-09 | 2022-05-13 | 淮北师范大学 | In2S3/Bi2WO6Composite photocatalyst and preparation method thereof |
| CN115400768A (en) * | 2022-09-07 | 2022-11-29 | 常州大学 | Heterojunction CdIn 2 S 4 /Bi 2 WO 6 Application of piezoelectric-optical composite catalyst in piezoelectric photodegradation of organic matters |
| CN115739126A (en) * | 2022-11-29 | 2023-03-07 | 湖北大学 | Application of (ZnS) mIn2S3 photocatalyst in photocatalytic degradation of ethylene and storage and preservation of fruits and vegetables |
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Application publication date: 20171124 |