CN104785270B - A kind of visible light catalyst for processing methylene blue dye wastewater and preparation method thereof - Google Patents
A kind of visible light catalyst for processing methylene blue dye wastewater and preparation method thereof Download PDFInfo
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- CN104785270B CN104785270B CN201410847202.XA CN201410847202A CN104785270B CN 104785270 B CN104785270 B CN 104785270B CN 201410847202 A CN201410847202 A CN 201410847202A CN 104785270 B CN104785270 B CN 104785270B
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- visible light
- methylene blue
- blue dye
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a kind of visible light catalyst for processing methylene blue dye wastewater and preparation method thereof.The method with soluble metallic salt, vanadic anhydride and hydrogen peroxide as raw material, the stirring and dissolving under conditions of 0 10 DEG C, insulation reaction after being then heated to 50 62 DEG C, produced to bubble-free and bottom has precipitation to generate, filtering, dries gained precipitation, and it is Me that formula is obtained after calciningx•V2O5Catalyst powder；Wherein, described soluble metallic salt is soluble sodium salt, mantoquita, and Me is sodium element or copper, x=0.2 0.4.Obtained catalyst under visible light illumination can effectively in degrading waste water methylene blue dye.
Description
Technical field
The invention belongs to inorganic functional material preparing technical field, it is related to a kind of for processing methylene blue dye wastewater
Visible light catalyst and preparation method thereof.
Background technology
Current organic dye waste water has become one of main pollution source of water body.The waste water has that water is big, concentration is high,
The features such as complicated component, colourity depth and difficult degradation.Most of dyestuffs have toxicity, carcinogenicity, teratogenesis and mutagenic effect.It is sub-
Methyl blue is a kind of important organic chemical synthesis dye of positive ion, and commercial Application is widely.For example, can be applied to fiber crops, silkworm
Silk fabrics, the dyeing of paper and the coloring of bamboo and wood, be applied to the biological, dyeing of bacterial organisms and be applied to manufacture ink and
Color lake etc..Methylene blue extensive use industrially causes the severe contamination to water body containing methylene blue dye wastewater.At present
The processing method of organic dye waste water mainly has bioanalysis, Coagulation Method, high-level oxidation technology, photocatalytic method, absorption method and film point
From method etc..Bioanalysis is influenceed by factors such as pH value, temperature, salt and kind of dyes so that the effect of Biochemical method is inadequate
It is preferable.The operating cost of Coagulation Method is higher, and body refuse amount is big and dehydration is difficult, and applicable pH value range is narrow.High-level oxidation technology
High cost, the shortcomings of conventional oxidant can also show that oxidability is not strong, there is selective oxidation, and holds in processing procedure
It is easily introduced impurity and causes secondary pollution.Membrane separation process it is relatively costly, operating pressure is larger, causes the energy consumption of embrane method higher.
In recent years, important research direction has been turned into using the poisonous and hazardous pollutant of semi-conducting material photocatalytic degradation.
Not only energy consumption is low, easy to operate for photocatalysis technology, reaction condition gentle, non-secondary pollution, and can effectively by organic contamination
Thing is converted into inorganic molecules, reaches completely inorganization purpose.The use of more photochemical catalyst is at present TiO2, there is light to urge for it
Change activity height, the advantage of good stability.But TiO2Greater band gap, the ultraviolet light of λ≤387nm can only be absorbed, solar energy
Utilization rate is low.Therefore, exploitation one kind replaces TiO2And the visible light catalytic of the simple efficient process methylene blue dye wastewater of energy
Agent has great importance.
The content of the invention
In view of the deficiencies in the prior art, it is an object of the invention to solve above-mentioned technical problem present in prior art,
So as to provide a kind of visible light catalyst of easy and effective degradation of methylene blue waste water and its preparation method and application.
To achieve these goals, the present invention obtains following technical scheme after lot of experiments is studied：
A kind of visible light catalyst for processing methylene blue dye wastewater, described visible light catalyst includes formula
It is Mex•V2O5Component, wherein Me be sodium element or copper, x=0.2-0.4.
A kind of preparation method for processing the visible light catalyst of methylene blue dye wastewater, the method includes following step
Suddenly：With soluble metallic salt, vanadic anhydride and hydrogen peroxide as raw material, then the stirring and dissolving under conditions of 0-10 DEG C heats
Insulation reaction after to 50-62 DEG C, produces to bubble-free and bottom has precipitation to generate, and filtering dries gained precipitation, is obtained after calcining
It is Me to obtain formulax•V2O5Catalyst powder；Wherein, described soluble metallic salt be soluble sodium salt or soluble copper salt,
Me is sodium element or copper, x=0.2-0.4.
Preferably, the preparation method of the visible light catalyst for being used to process methylene blue dye wastewater as described above, wherein
Sodium element or copper and the mol ratio of vanadic anhydride in described soluble metallic salt are 0.2-0.4：1.
Preferably, the preparation method of the visible light catalyst for being used to process methylene blue dye wastewater as described above, wherein
Described raw material stirring and dissolving under 0 DEG C of ice-water bath.
It is further preferred that the preparation side of the visible light catalyst for being used to process methylene blue dye wastewater as described above
Method, wherein the insulation reaction under 60 DEG C of constant temperature water bath heating of the raw material after dissolving.
Preferably, the preparation method of the visible light catalyst for being used to process methylene blue dye wastewater as described above, wherein
Described drying steps are will to be deposited under normal temperature and air conditionses to dry.
Preferably, the preparation method of the visible light catalyst for being used to process methylene blue dye wastewater as described above, wherein
Described calcining step is that dry precipitation is put into Muffle furnace, is calcined 35 hours at 200 DEG C 500 DEG C.
Preferably, the preparation method of the visible light catalyst for being used to process methylene blue dye wastewater as described above, wherein
The mass fraction of described hydrogen peroxide is 8-12%.
Be introduced into methylene blue dye wastewater in cylindrical quartz photo catalysis reactor by the present invention, according to methylene blue dye
The concentration of waste water adds the visible light catalyst powder that 0.5 ~ 2g/L is prepared as stated above, is then turned on magnetic stirring apparatus and is stirred
Mix, make catalyst in suspended state, be then turn on xenon source, irradiate 30-90 minutes, using having in wastewater by photocatalysis
Machine composition.The xenon lamp is placed in quartzy cold-trap, and the cold-trap is fixed on cylindrical quartz reactor center, in the interlayer in cold-trap
Cooling water is connected with, by the fuel factor for adjusting the flow of cooling water to eliminate xenon lamp.The light source is using simulated solar spectrum
Xenon lamp, optical filter filters off the ultraviolet spectra of 420 below nm wavelength.Sunlight can also be used in the present invention.The present invention exists
Have catalytic degradation efficiency high under normal temperature and pressure, simply, non-secondary pollution is produced, and the low spy of operating cost for technological process
Point, there is actual application value very high.
Based on use above effect, present invention also offers one kind using above-mentioned visible light catalyst treatment methylene blue dye
The method for expecting waste water, wherein the method include being suspended in the visible light catalyst in methylene blue dye wastewater, in wavelength
The radiation of visible light 30-90 min treatment of >=420nm.
Preferably, the method for processing methylene blue dye wastewater using above-mentioned visible light catalyst as described above, wherein pressing
The ratio of 0.5 ~ 2.0g/L waste water adds the visible light catalyst, processes under agitation.
Compared with prior art, there is following significant advantage the present invention relates to process the method for methylene blue dye wastewater
It is progressive with significant：
（1）Visible light catalyst preparation method of the invention is simple, it is easy to industrialized production.
（2）Visible light catalyst activity of the invention is high, removes pollutant effect is significant, can be quick in the short period of time
And efficient degradation pollutant.
（3）Method of wastewater treatment of the invention can be carried out at normal temperatures and pressures, and technological process is simple and low cost.
（4）Pollutant is finally degraded into method of wastewater treatment of the invention inorganic molecules material, so as to avoid two
The generation of secondary pollution.
Specific embodiment
Preparation and application of the form to visible light catalyst of the invention by the following examples remakes further detailed
Illustrate, but this scope for being interpreted as above-mentioned theme of the invention should not be only limitted to following embodiment, it is all above-mentioned based on the present invention
The technology that content is realized belongs to the scope of the present invention.
Embodiment 1
0.01mol i.e. 1.81g vanadic anhydrides are weighed, then takes 0.43g i.e. 0.003mol anhydrous sodium sulfates, make both in ice
It is dissolved under water bath condition in 10% 40mL hydrogen peroxide, after being completely dissolved, mixed solution is placed on water-bath to enter in 60 DEG C
Row isothermal reaction, room temperature is dried after reacting the reddish-brown precipitation filtering of generation, and the sediment that will then dry is positioned over crucible
After be transferred in Muffle furnace and calcine 3h in 300 DEG C, taken out after cooling standby.
During methylene blue dye wastewater that 40 mL concentration are 70.0 mg/L added into cylindrical quartz photo catalysis reactor,
The mg of catalyst 40 that addition is prepared as stated above, magnetic agitation makes photochemical catalyst be constantly in suspended state, Ran Houyong
300 W xenon lamps irradiate（Built-in optical filter filters off 420 below nm wave spectrums）.The radiation of visible light 60 of nm in wavelength >=420
After min, the degradation rate of methylene blue is 99.20%.And in the presence of no anhydrous sodium sulfate, by the present embodiment catalyst method
The vanadic anhydride for preparing is only 51.14% to the degradation rate of methylene blue.
Embodiment 2
0.01mol i.e. 1.81g vanadic anhydrides are weighed, 0.002mol is 0.483g nitrate trihydrate copper, makes both in ice
Be dissolved under water bath condition in the 40mL hydrogen peroxide that content is 10%, after being completely dissolved, by mixed solution be placed on water-bath in
60 DEG C carry out isothermal reaction, and room temperature is dried after reacting the reddish-brown precipitation filtering of generation, and the sediment that will then dry is placed
3h is calcined in 200 DEG C in Muffle furnace is transferred to after crucible, is taken out after cooling standby.
During methylene blue dye wastewater that 40 mL concentration are 70.0 mg/L added into cylindrical quartz photo catalysis reactor,
The mg of catalyst 40 that addition is prepared as stated above, magnetic agitation makes photochemical catalyst be constantly in suspended state, Ran Houyong
300 W xenon lamps irradiate（Built-in optical filter filters off 420 below nm wave spectrums）.The radiation of visible light 60 of nm in wavelength >=420
After min, the degradation rate of methylene blue is 99.17%.And in the presence of no copper nitrate, prepared by the present embodiment catalyst method
The vanadic anhydride for obtaining is only 51.14% to the degradation rate of methylene blue.
Embodiment 3
0.01mol i.e. 1.81g vanadic anhydrides are weighed, 0.003mol is 0.725g nitrate trihydrate copper, makes both in ice
It is dissolved under water bath condition in 10% 40mL hydrogen peroxide, after being completely dissolved, mixed solution is placed on water-bath to enter in 60 DEG C
Row isothermal reaction, room temperature is dried after reacting the reddish-brown precipitation filtering of generation, and the sediment that will then dry is positioned over crucible
After be transferred in Muffle furnace and calcine 3h in 300 DEG C, taken out after cooling standby.
During methylene blue dye wastewater that 40 mL concentration are 70.0 mg/L added into cylindrical quartz photo catalysis reactor,
The mg of catalyst 40 that addition is prepared as stated above, magnetic agitation makes photochemical catalyst be constantly in suspended state, Ran Houyong
300 W xenon lamps irradiate（Built-in optical filter filters off 420 below nm wave spectrums）.The radiation of visible light 60 of nm in wavelength >=420
After min, the degradation rate of methylene blue is 99.50%.
Embodiment 4
0.01mol i.e. 1.81g vanadic anhydrides are weighed, 0.003mol is 0.967g nitrate trihydrate copper, makes both in ice
It is dissolved under water bath condition in 10% 40mL hydrogen peroxide, after being completely dissolved, mixed solution is placed on water-bath to enter in 60 DEG C
Row isothermal reaction, room temperature is dried after reacting the reddish-brown precipitation filtering of generation, and the sediment that will then dry is positioned over crucible
After be transferred in Muffle furnace and calcine 5h in 500 DEG C, taken out after cooling standby.
During methylene blue dye wastewater that 40 mL concentration are 70.0 mg/L added into cylindrical quartz photo catalysis reactor,
The mg of catalyst 40 that addition is prepared as stated above, magnetic agitation makes photochemical catalyst be constantly in suspended state, Ran Houyong
300 W xenon lamps irradiate（Built-in optical filter filters off 420 below nm wave spectrums）.The radiation of visible light 60 of nm in wavelength >=420
After min, the degradation rate of methylene blue is 92.07%.
Claims (8)
1. a kind of preparation method for processing the visible light catalyst of methylene blue dye wastewater, it is characterised in that the method bag
Include following steps：With soluble metallic salt, vanadic anhydride and hydrogen peroxide as raw material, the stirring and dissolving under conditions of 0-10 DEG C,
Insulation reaction after being then heated to 50-62 DEG C, produces to bubble-free and bottom has precipitation to generate, and filtering dries gained precipitation, warp
It is Me that formula is obtained after calciningx•V2O5Catalyst powder；Wherein, described soluble metallic salt is soluble sodium salt or solvable
Property mantoquita, Me be sodium element or copper, x=0.2-0.4.
2. the preparation method of the visible light catalyst for being used to processing methylene blue dye wastewater according to claim 1, it is special
Levy and be：Described raw material stirring and dissolving under 0 DEG C of ice-water bath.
3. the preparation method of the visible light catalyst for being used to processing methylene blue dye wastewater according to claim 2, it is special
Levy and be：Raw material after the dissolving insulation reaction under 60 DEG C of constant temperature water baths heating.
4. the preparation method of the visible light catalyst for being used to processing methylene blue dye wastewater according to claim 1, it is special
Levy and be：Described drying steps are will to be deposited under normal temperature and air conditionses to dry.
5. the preparation method of the visible light catalyst for being used to processing methylene blue dye wastewater according to claim 1, it is special
Levy and be：Described calcining step is that dry precipitation is put into Muffle furnace, is calcined 35 hours at 200 DEG C 500 DEG C.
6. the preparation method of the visible light catalyst for being used to processing methylene blue dye wastewater according to claim 1, it is special
Levy and be：The mass fraction of described hydrogen peroxide is 8-12%.
7. the method that visible light catalyst described in a kind of utilization claim 1 processes methylene blue dye wastewater, it is characterised in that：
The method includes being suspended in the visible light catalyst in methylene blue dye wastewater, and in wavelength >=420, the visible ray of nm shines
Penetrate 30-90 min treatment.
8. the method for processing methylene blue dye wastewater using above-mentioned visible light catalyst according to claim 7, its feature
It is：The visible light catalyst is added in the ratio of 0.5 ~ 2.0g/L waste water, is processed under agitation.
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| CN106669725A (en) * | 2016-12-09 | 2017-05-17 | 湖北工业大学 | Preparation method of multi-component compound oxide catalyst composition for treating methylene blue wastewater |
| CN106824172A (en) * | 2016-12-09 | 2017-06-13 | 湖北工业大学 | The carbon monoxide-olefin polymeric preparation method and application of low concentration formaldehyde in treatment waste water |
| CN106477706A (en) * | 2016-12-14 | 2017-03-08 | 盐城工学院 | Method and the processing method of waste water from dyestuff that a kind of methylenum careuleum is faded |
| CN111518399A (en) * | 2019-11-29 | 2020-08-11 | 山东天汇路桥有限公司 | Reaction type self-cleaning pavement cementing material based on photocatalysis and preparation method thereof |
| CN111495398A (en) * | 2020-04-22 | 2020-08-07 | 昆明理工大学 | Nano composite visible light catalyst for degrading organic pollutants and preparation method thereof |
| CN111718071A (en) * | 2020-06-30 | 2020-09-29 | 重庆工商大学 | Methylene blue dye wastewater treatment method based on short-range photocatalysis/algae biodegradation |
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| CN103086431B (en) * | 2013-01-22 | 2015-04-22 | 昆明理工大学 | Preparation method of V2O5 nanowire |
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