CN108033522A - A kind of electro-catalysis couples advanced oxidation system - Google Patents
A kind of electro-catalysis couples advanced oxidation system Download PDFInfo
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- CN108033522A CN108033522A CN201711399035.7A CN201711399035A CN108033522A CN 108033522 A CN108033522 A CN 108033522A CN 201711399035 A CN201711399035 A CN 201711399035A CN 108033522 A CN108033522 A CN 108033522A
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
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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
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
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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
- C02F2101/38—Organic compounds containing nitrogen
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Abstract
The present invention provides a kind of electro-catalysis to couple advanced oxidation system, and degrading organic pollutant is reduced to hydrocarbon for carbon dioxide and synchronous electro-catalysis.In the catalyst system and catalyzing, three-dimensional hexagonal star-shape Co3O4Accumulating flower-shaped CuO respectively as anode and cathode material, two kinds of electrode materials with nanometer sheet is prepared by solvent-thermal method.During three-electrode system electro-catalysis, Co3O4P-nitrophenol can be thoroughly mineralized into CO by electric anode2And H2The carbon dioxide of generation can be synchronously reduced to useful hydrocarbon by O, CuO electricity cathode.When applying bias are 0.8V vs Ag/AgCl, the catalytic effect of material is optimal.For p-nitrophenol removal rate up to more than 98%, the yield of methanol and ethanol respectively reaches 49.145 and 20.475 micromoles per liters/hour.
Description
Technical field
The present invention relates to a kind of electro-catalysis to couple advanced oxidation system, belongs to sewage treatment field.
Background technology
The fast development of industrialization and urbanization brings highly developed material progress at the same time to the mankind, also brings and does not allow
The serious problems such as the environmental pollution of ignorance and shortage of resources.The pollution continued to increase not only results in serious as global warming
The problem of, but also our life will be threatened.Wherein produced after a large amount of discharges and fossil energy burning of industrial wastewater big
The CO of amount2It is particularly noticeable.Water environment pollution thing is not only simple inorganic pollution at present, and more multicomponent is more and more multiple
Miscellaneous, the higher and higher organic contamination problem of concentration is increasingly serious.How advanced treating these to human hazard have high concentration,
Difficult degradation and the organic pollution and reduction greenhouse gases CO easily accumulated2Discharge, it has also become the focus of social concerns.Often
The processing method for the organic pollution seen has photocatalysis, electrocatalytic method, high-level oxidation technology and traditional physics, chemical method etc.,
But can be CO by organic pollution mineralising in these methods2, but still remain quantum efficiency is low, capacity usage ratio is low,
The problems such as catalyst hardly possible recycling.On the other hand, CO2The report that catalysis is reduced to other hydrocarbons has been carried out largely grinding
Study carefully, common CO2The approach of catalysis reduction has photocatalysis, and electro-catalysis and photoelectrocatalysis method etc., faradic efficiency is low, also originates in
The problems such as selectivity of thing, is still urgent problem, although at present have largely on organic pollutant remove and
CO2The report of reduction.But processing methods all at present at the same time is not all accounted for while organic pollution efficiently removes
Realize CO2Catalysis reduction.This not only solves problem of environmental pollution, but also can realize the recycling of organic pollution,
While solving Organic Pollutants In Water, the negative effect that overcomes greenhouse gases to bring.
In recent years, with potentiometric titrations (SO4-) and hydroxyl radical free radical (OH) based on high-level oxidation technology
(AOPs) develop rapidly and as the emerging technology of efficient process organic pollution.Have largely on peroxy-monosulfate at present
(PMS) or peroxydisulfate (PDS) activation produces SO4- and OH remove the report of removal organic polluter.It is main contain with
Under several classes：(1) it is ultrasonic, heat, under ultraviolet light；(2) variable valency metal ions during homogeneous catalysis：Co2+, Mn2+, Fe2+Deng；
(3) different-phase catalyst containing variable valency metal：Co3O4, MnO2, Fe2O3Deng.Having inquired into for the systems such as Shiying Yang is ultraviolet
Light, under heating condition PMS activation produce the degraded of potentiometric titrations and hydroxyl radical free radical to acid orange -7.Jing Deng lead to
Cross masterplate method and obtain orderly mesoporous Co3O4, relative to Co3O4Nano-particle has the stability of higher, has probed into its activation
PMS is used for the mechanism process of chloramphenicol degrading.Meanwhile electro-catalysis goes removal organic polluter technology to cause closing extensively for researcher
Note, goes removal organic polluter to develop into electric Fenton and is applied to organic wastewater from early stage simple anodic oxidation.Comninellis, C
Pass through the SnO of doping2As anode electrocatalytic oxidation phenol, TOC, which is removed, can reach 90%, be produced by analyzing the middle of reaction
The balance of thing and carbon confirms oxidation of phenol into CO2Process.Although there is many electrocatalytic oxidations at present and based on SO4·-
Advanced oxidation removes the report of removal organic polluter, while electro-catalysis reduction CO2Report into organic matter is quite a few.But do not have so far
Have and electro-catalysis coupling advanced oxidation degradation organic pollution is reduced to hydrocarbon for carbon dioxide and synchronous electro-catalysis
The report of system.Therefore, it is very urgent to test the two targets to make a novel electric catalyticing system.It is so not only favourable
In the improvement of environment, alleviating energy crisis is also beneficial to, while new thinking is provided for environmental improvement.
The content of the invention
It is an object of the invention to provide a kind of electro-catalysis to couple advanced oxidation system, and in particular to a kind of new coupling
The preparation scheme of electro-catalytic process and its new electrode materials, to solve current pollution, energy problem provides new approaches and new
Material.
One aspect of the present invention provides a kind of electro-catalysis coupling advanced oxidation system, in the system, three-dimensional hexagonal
Starlike Co3O4Flower-shaped CuO is accumulated respectively as anode and cathode material with nanometer sheet.
According to the present invention, high-level oxidation technology is coupled with electro-catalysis in anode, Co3O4Electric anode can both activate over cure
Hydrochlorate, which produces potentiometric titrations and hydroxyl radical free radical, to produce hydroxyl radical free radical by electro-catalysis, so as to will efficiently have
The thorough mineralising of organic pollutants is CO2And H2O。
According to the present invention, the CO that organic pollution is produced in the thorough mineralising of anode2It is incorporated into by exhaust pipe in cathode, so
Afterwards hydrocarbon is reduced on CuO cathodes.
According to the present invention, two kinds of electrode materials are prepared by solvent-thermal method.
Another aspect of the present invention provides three-dimensional hexagonal star-shape Co3O4Flower-shaped CuO electrode materials are accumulated with nanometer sheet
Synthetic method.
Another aspect of the present invention provides the application process of the electro-catalysis coupling advanced oxidation system and its in dirt
The application of water treatment field.
It is an advantage of the invention that：1st, catalyst of the invention also can be by carbon dioxide also while degradable organic pollutant
It is former into one hydrocarbon fuel of the Green Chemistry energy；2nd, the present invention has by the way that electro-catalysis coupling high-level oxidation technology removal is environmentally hazardous
Organic pollutants, realize the efficient removal of organic pollution, new approaches are provided for environmental improvement problem；3rd, the present invention passes through one
Solvent-thermal method is walked by final catalyst growth in situ in electro-conductive glass substrate, is obtained newly by adding different urea regulation and control synthesis
Pattern.4th, catalyst stabilization of the invention is good, easily recycling, excellent catalytic effect；5th, material of the invention is cheap and easy to get, synthesis side
Method is simple, and the yield and purity of synthesis are higher, and experimental repeatability is good, is adapted to the requirement of extension production
Brief description of the drawings
Fig. 1 is the front and rear Co0.5 catalyst of present invention reaction and pure Co3O4And penetrated with Co0.2, Co1.0 and Co1.5X
Line powder diffraction comparison diagram；
Fig. 2 is the CuO catalyst of the present invention and pure CuOX ray powder diffraction comparison diagrams；
Fig. 3 is the Co of the present invention3O4The scanning electron microscope (SEM) photograph of catalyst；
Fig. 4 is the scanning electron microscope (SEM) photograph of the CuO catalyst of the present invention；
The Co of Fig. 5 present invention3O4The speed and Co0.5 electrocatalytic oxidations of degraded p-nitrophenol in advanced oxidation processes
Change the speed of degraded p-nitrophenol；
The speed of the Co0.5 of Fig. 6 present invention degraded p-nitrophenols in electrocatalytic oxidation couples advanced oxidation processes；
The Co0.5 electricity anode and CuO electricity cathode of Fig. 7 present invention is under different voltages, degraded p-nitrophenol and reduction two
Carbonoxide is methanol/ethanol；
Ultraviolet when electro-catalysis coupling advanced oxidation degradation p-nitrophenol 1 is small of the Co0.5 catalyst of Fig. 8 present invention can
See all band figure.
Embodiment
One aspect of the present invention provides a kind of electro-catalysis coupling advanced oxidation system, in the system, three-dimensional hexagonal
Starlike Co3O4Flower-shaped CuO is accumulated respectively as anode and cathode material with nanometer sheet.
Preferably, high-level oxidation technology is coupled with electro-catalysis in anode, Co3O4Electric anode can both activate persulfate
Hydroxyl radical free radical can also be produced by electro-catalysis by producing potentiometric titrations and hydroxyl radical free radical, so that efficiently by organic dirt
It is CO to contaminate the thorough mineralising of thing2And H2O。
Preferably, the CO that organic pollution is produced in the thorough mineralising of anode2It is incorporated into by exhaust pipe in cathode, Ran Hou
Hydrocarbon is reduced on CuO cathodes.
Another aspect of the present invention provides three-dimensional hexagonal star-shape Co3O4Flower-shaped CuO electrode materials are accumulated with nanometer sheet
Synthetic method.
Preferably, two kinds of electrode materials are prepared by solvent-thermal method.
Preferably, three-dimensional hexagonal star-shape Co3O4The synthetic method of material is：0.5~1 gram of cobalt nitrate is dissolved in 40 milliliters of second
Stirred in glycol and water mixed solution, add 0.5~1.5 gram of urea until completely dissolved and stir evenly, then add 30~50
Milligram cetyl trimethyl bromine ammonium and 1~2 gram of ammonium fluoride, stir 30~45 minutes uniform, transparent nothings of formation under room temperature
Color solution, its solution is transferred in 100 milliliters of ptfe autoclave liners.Afterwards by a piece of conductive glass cleaned up
In glass (1.5 4.0 centimetres of cm x) slant setting reaction kettle, reaction kettle is finally transferred to by the conduction of electro-conductive glass up
100~120 DEG C of reactions in drying box, the presoma of purple is obtained when reaction 10~12 is small on electro-conductive glass.By its electro-conductive glass
It is put into Muffle furnace, when 350 DEG C~550 DEG C calcinings 2~4 are small, are subsequently cooled to room temperature, obtain three-dimensional hexagonal star-shape Co3O4。
Preferably, the synthetic method of the flower-shaped CuO materials of nanometer sheet accumulation is characterized in：Take 5~6 grams of sodium hydroxides, 1~
1.2 grams of ammonium persulfates and 0.2~0.4 sodium tungstate are dissolved in 30~40 ml deionized waters successively, and 30~45 points are stirred under room temperature
It is bell into uniform, transparent colourless solution.Formed afterwards in 0.4~0.6 gram of above-mentioned solution of lauryl sodium sulfate addition homogeneous
White solution.After lauryl sodium sulfate all dissolving, move into teflon lined stainless steel autoclave, cleaning
Good copper mesh (1.5 4.0 centimetres of cm x) is immersed in above-mentioned solution.100~150 DEG C of reactions 24 are small under autoclave encapsulation situations
When, room temperature is subsequently cooled to, copper mesh is taken out, is cleaned with deionized water, black nano piece is obtained and accumulates flower-shaped CuO.
It is anti-in conventional H type electrolytic cell present invention also offers a kind of application process of electro-catalysis coupling advanced oxidation system
Answer in system, with three-dimensional hexagonal star-shape Co3O4Flower-shaped CuO is accumulated respectively as anode and cathode material with nanometer sheet, in anode chamber
0.1 mol/L metabisulfite solution is added, 0.1 mol/L potassium bicarbonate solution is added in cathode chamber, then in anolyte
0.5 g/l of persulfate of middle addition and 10 mg/litre p-nitrophenyl phenol solutions, energization carries out electrolysis and advanced oxidation coupling is anti-
Should.
Preferably, the 0.1 mol/L metabisulfite solution added in anode chamber and the 0.1 mol/L carbon added in cathode chamber
The volume of potassium hydrogen phthalate solution is 60 milliliters.
Present invention also offers a kind of electro-catalysis to couple application of the advanced oxidation system in sewage treatment field, for removing
Organic pollution in waste water, the organic pollution produce CO in anode mineralising2, it is incorporated into by exhaust pipe in cathode, so
Hydrocarbon is reduced on cathode afterwards.
The present invention is further described by the following examples, but is not intended to limit the present invention.
Embodiment 1
Three-dimensional hexagonal star-shape Co3O4The synthesis of electric anode material：
0.582 gram of 2 mMs of cobalt nitrate is dissolved in 10 milliliters of ethylene glycol and 30 milliliters of water and is stirred, is added until completely dissolved
Enter 0.5 gram of urea to stir evenly, then add 0.05g cetyl trimethyl bromine ammoniums and the ammonium fluoride of 1.455g, 25 DEG C of stirrings
Form uniform, transparent colourless solution within 30 minutes, its solution is transferred in 100 milliliters of ptfe autoclave liners.It
Afterwards by a piece of electro-conductive glass (1.5 4.0 centimetres of cm x) slant setting reaction kettle cleaned up, the conducting surface of electro-conductive glass
Upward, reaction kettle is finally transferred to 120 DEG C of reactions in drying box, the forerunner of purple is obtained on electro-conductive glass when reaction 12 is small
Body.Its electro-conductive glass is put into Muffle furnace, when 350 DEG C of precalcinings 2 are small, when then 550 DEG C of calcinings 2 are small again, is then cooled down
To room temperature, Co is obtained3O4.Here it is Co that 0.2g, 0.5g, 1.0g and 1.5g are obtained by urea addition3O4It is named as Co0.2,
Co0.5, Co1.0 and Co1.5 electrode.
Embodiment 2
Nanometer sheet accumulates the synthesis of flower-shaped CuO electricity cathode：Take 6.4g sodium hydroxides, 1.0954g ammonium persulfates and 0.211g
Sodium tungstate is dissolved in 32 ml deionized waters successively, and 25 DEG C of stirrings form uniform, transparent colourless solution in 30 minutes.Afterwards
0.4614g lauryl sodium sulfate adds in above-mentioned solution and forms homogeneous white solution.Treat that lauryl sodium sulfate is all molten
Xie Hou, moves into teflon lined stainless steel autoclave, in cleaned copper mesh (1.5 4.0 centimetres of cm x) immersion
State in solution.When the lower 130 DEG C of reactions 24 of autoclave encapsulation situations are small, room temperature is subsequently cooled to, takes out copper mesh, it is clear with deionized water
Wash, obtain black sample CuO.
As Figure 1-Figure 8, show through X-ray powder diffraction test result：
A series of diffraction pattern of Co0.2, Co0.5, Co, 1.0 and Co1.5 catalyst of the present invention and standard card Co3O4's
It is completely the same, illustrate that the addition of not same amount urea does not have an impact Co3O4Crystal form, and react after crystal form also do not change.
Raman analysis, the Co0.5 catalyst materials of XPS and EDS analysis shows invention are by Co3O4Compound composition.Can from surface sweeping electron microscope
To see that pattern influence of the addition of not same amount urea on catalyst Co0.5 is very big.When urea is less than 0.5, catalyst morphology is received
The molecular flower-like structure of the grain of rice, surface becomes smooth when urea is more than 0.5, and pattern is further converted to the flower-shaped knot of Magen David
Structure.
The present invention CuO from the point of view of scanning electron microscope, CuO patterns by nanometer sheet heap Lai flower-like structure.From linearly following
Ring volt-ampere curve is it can be found that the CuO catalyst of the present invention has high activity to carbon dioxide reduction.
Embodiment 3
In a conventional H type electrolytic cell reaction system, respectively with three-dimensional hexagonal star-shape Co3O4Accumulated with nanometer sheet flower-shaped
CuO adds 0.1 mol/L metabisulfite solution (volume is 60 milliliters) in anode chamber, in the moon respectively as anode and cathode material
Pole room adds 0.1 mol/L potassium bicarbonate solution (volume is 60 milliliters), and 0.5 g/l of mistake is then added in anolyte
Sulfate and 10 mg/litre p-nitrophenyl phenol solutions, energization carry out electrolysis and advanced oxidation coupled reaction.
When applying bias are -0.8V vs Ag/AgCl, Co3O4Electric anode p-nitrophenol removal rate up to 98% with
On, it is micro- that carbon dioxide reduction synchronously can be respectively reached 49.145 and 20.475 by CuO electricity cathode for the yield of methanol and ethanol
Mol/L/hour.The Co of the present invention can be confirmed by all band degradation data0.5Catalyst can be by p-nitrophenol mineralising
Into CO2And H2O。
The catalyst of the present invention is prepared using solvent-thermal method, and material is cheap and easy to get, and synthetic method is simple, synthesis
Yield it is higher, purity is also very high and reproducible, be adapted to extension production requirement.The catalyst of the present invention, passes through electricity
Catalytic oxidation technologies and the coupling of electro-catalysis reduction technique, while electro-catalytic oxidation technology is coupled with advanced oxidation, to have in water body
The effective mineralising of organic pollutants and at the same time by carbon dioxide conversion into simple useful chemical products (such as methane, methanol, ethanol
Deng) it is target.Carbon dioxide conversion is green energy while can organic pollution efficiently be removed by the elctro-catalyst of the present invention
Source, this not only contributes to the improvement of environment, is also beneficial to alleviating energy crisis, while new thinking is provided for environmental improvement.
The above is only presently preferred embodiments of the present invention.It will be appreciated by those skilled in the art that the invention is not restricted to here
The specific embodiment, can carry out for a person skilled in the art it is various significantly change, readjust and substitute and
Without departing from the scope of protection of the present invention.Therefore, although being described in further detail by above example to the present invention,
But the present invention is not limited only to above example, without departing from the inventive concept, can also include more other
Equivalent embodiment, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of electro-catalysis couples advanced oxidation system, it is characterized in that：In the system, three-dimensional hexagonal star-shape Co3O4And nanometer sheet
Flower-shaped CuO is accumulated respectively as anode and cathode material.
2. a kind of electro-catalysis coupling advanced oxidation system as claimed in claim 1, it is characterized in that：Preferably, in anode by height
Level oxidation technology is coupled with electro-catalysis, Co3O4Electric anode can both activate persulfate and produce potentiometric titrations and hydroxyl free
Base can also produce hydroxyl radical free radical by electro-catalysis, so as to be efficiently CO by the thorough mineralising of organic pollution2And H2O。
3. a kind of electro-catalysis coupling advanced oxidation system as claimed in claim 1, it is characterized in that：Organic pollution is thorough in anode
The CO that bottom mineralising produces2It is incorporated into by exhaust pipe in cathode, is then reduced to hydrocarbon on CuO cathodes.
4. a kind of electro-catalysis coupling advanced oxidation system as claimed in claim 1, wherein, three-dimensional hexagonal star-shape Co3O4Material
Synthetic method is：0.5~1 gram of cobalt nitrate is dissolved in 40 milliliters of ethylene glycol and water mixed solution and is stirred, is added until completely dissolved
Enter 0.5~1.5 gram of urea to stir evenly, then add 30~50 milligrams of cetyl trimethyl bromine ammoniums and 1~2 gram of fluorination
Ammonium, stirs under room temperature 30~45 minutes and forms uniform, transparent colourless solution, its solution is transferred to 100 milliliters of polytetrafluoroethyl-nes
In alkene reaction kettle liner；Afterwards by a piece of electro-conductive glass slant setting reaction kettle cleaned up, the conducting surface of electro-conductive glass
Upward, reaction kettle is finally transferred to 100~120 DEG C of reactions in drying box, purple is obtained on electro-conductive glass when reaction 10~12 is small
The presoma of color；Electro-conductive glass is put into Muffle furnace, when 350 DEG C~550 DEG C calcinings 2~4 are small, is subsequently cooled to room temperature,
Obtain three-dimensional hexagonal star-shape Co3O4。
5. a kind of electro-catalysis coupling advanced oxidation system as claimed in claim 1, wherein, nanometer sheet accumulates flower-shaped CuO materials
Synthetic method be：Taking 5~6 grams of sodium hydroxides, 1~1.2 gram of ammonium persulfate and 0.2~0.4 sodium tungstate be dissolved in 30 successively~
40 ml deionized waters, stir under room temperature 30~45 minutes and form uniform, transparent colourless solution；0.4~0.6 gram 12 afterwards
Sodium alkyl sulfate adds in above-mentioned solution and forms homogeneous white solution, after lauryl sodium sulfate all dissolving, moves into poly-
In tetrafluoroethene lining stainless steel autoclave, cleaned copper mesh is immersed in above-mentioned solution；100 under autoclave encapsulation situations~
When 150 DEG C of reactions 24 are small, room temperature is subsequently cooled to, copper mesh is taken out, is cleaned with deionized water, it is flower-shaped to obtain the accumulation of black nano piece
CuO。
A kind of 6. application process of electro-catalysis coupling advanced oxidation system as claimed in claim 1, it is characterised in that：In routine
In H-type electrolytic cell reaction system, with three-dimensional hexagonal star-shape Co3O4Flower-shaped CuO is accumulated respectively as anode and cathode material with nanometer sheet
Material, 0.1 mol/L metabisulfite solution is added in anode chamber, and 0.1 mol/L potassium bicarbonate solution, Ran Hou are added in cathode chamber
Add 0.5 g/l of persulfate and 10 mg/litre p-nitrophenyl phenol solutions in anolyte, energization carries out electrolysis and advanced
Oxidation coupling reacts.
7. application process as claimed in claim 6, it is characterised in that：In the 0.1 mol/L metabisulfite solution that anode chamber adds
Volume with the 0.1 mol/L potassium bicarbonate solution added in cathode chamber is 60 milliliters.
A kind of 8. three-dimensional hexagonal star-shape Co3O4The synthetic method of material, it is characterised in that 0.5~1 gram of cobalt nitrate is dissolved in 40 millis
Rise in ethylene glycol and water mixed solution and stir, add 0.5~1.5 gram of urea until completely dissolved and stir evenly, then add 30
~50 milligrams of cetyl trimethyl bromine ammoniums and 1~2 gram of ammonium fluoride, stir under room temperature formed within 30~45 minutes it is uniform, transparent
Colourless solution, its solution is transferred in 100 milliliters of ptfe autoclave liners；Afterwards by it is a piece of clean up lead
In electric glass slant setting reaction kettle, reaction kettle is transferred to 100 in drying box by the conduction of electro-conductive glass up, finally~
120 DEG C of reactions, the presoma of purple is obtained when reaction 10~12 is small on electro-conductive glass；Electro-conductive glass is put into Muffle furnace,
When 350 DEG C~550 DEG C calcinings 2~4 are small, room temperature is subsequently cooled to, obtains three-dimensional hexagonal star-shape Co3O4。
9. a kind of nanometer sheet accumulates the synthetic method of flower-shaped CuO materials, it is characterised in that take 5~6 grams of sodium hydroxides, 1~1.2
Gram ammonium persulfate and 0.2~0.4 sodium tungstate are dissolved in 30~40 ml deionized waters successively, and 30~45 minutes shapes are stirred under room temperature
Into uniform, transparent colourless solution；Afterwards 0.4~0.6 gram of lauryl sodium sulfate add in above-mentioned solution formed it is homogeneous white
Color solution, after lauryl sodium sulfate all dissolving, moves into teflon lined stainless steel autoclave, cleaned
Copper mesh is immersed in above-mentioned solution；When 100~150 DEG C of reactions 24 are small under autoclave encapsulation situations, room temperature is subsequently cooled to, takes out copper
Net, is cleaned with deionized water, is obtained black nano piece and is accumulated flower-shaped CuO.
10. a kind of electro-catalysis as claimed in claim 1 couples advanced oxidation system in the application of sewage treatment field, its feature
It is：For removing the organic pollution in waste water, the organic pollution produces CO in anode mineralising2, drawn by exhaust pipe
Enter into cathode, hydrocarbon is then reduced on cathode.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108906049A (en) * | 2018-06-25 | 2018-11-30 | 山东京博石油化工有限公司 | The preparation method and photoelectrocatalysis of flower-shaped copper oxide restore CO2Method |
| CN110526343A (en) * | 2019-09-06 | 2019-12-03 | 南昌航空大学 | A kind of electro-catalysis coupling advanced oxidation system and its application |
| CN112320895A (en) * | 2020-09-21 | 2021-02-05 | 北京科技大学 | Device and method for producing methane by coupling printing and dyeing wastewater treatment through three-dimensional electrode |
| CN114132999A (en) * | 2021-11-26 | 2022-03-04 | 宁波职业技术学院 | Method for treating printing and dyeing wastewater by activating persulfate through anode electrochemistry |
| EP3986837A4 (en) * | 2019-06-19 | 2023-01-25 | Evoqua Water Technologies LLC | Electrochemically activated persulfate for advanced oxidation processes |
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