CN102600865B - Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof - Google Patents

Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof Download PDF

Info

Publication number
CN102600865B
CN102600865B CN201210054669XA CN201210054669A CN102600865B CN 102600865 B CN102600865 B CN 102600865B CN 201210054669X A CN201210054669X A CN 201210054669XA CN 201210054669 A CN201210054669 A CN 201210054669A CN 102600865 B CN102600865 B CN 102600865B
Authority
CN
China
Prior art keywords
catalyst
magnesium ferrite
preparation
vanadic acid
mass ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201210054669XA
Other languages
Chinese (zh)
Other versions
CN102600865A (en
Inventor
吴瑛
张雷
吴廷华
何益明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Normal University CJNU
Original Assignee
Zhejiang Normal University CJNU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Normal University CJNU filed Critical Zhejiang Normal University CJNU
Priority to CN201210054669XA priority Critical patent/CN102600865B/en
Publication of CN102600865A publication Critical patent/CN102600865A/en
Application granted granted Critical
Publication of CN102600865B publication Critical patent/CN102600865B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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 relates to a photocatalyst for degrading organic dye waste water pollutants. The catalyst is formed by compounding magnesium ferrite and silver vanadate nanoparticles. The chemical composition general formula of the photocatalyst is mMgFe2O4/Ag3VO4, wherein m is the mass ratio of MgFe2O4 to Ag3VO4; and m is more than 0 and less than or equal to 0.005. A preparation method of the photocatalyst comprises the following steps of: firstly, preparing magnesium ferrite and silver vanadate powder with a citric acid sol-gel method and a chemical precipitation method respectively; secondly, mixing and grinding the magnesium ferrite and silver vanadate powder for 10 minutes according to the mass ratio of the magnesium ferrite to the silver vanadate; and lastly, baking at the temperature of 200-500 DEG C, and baking for 4 hours to obtain a finished catalyst. The catalyst has a simple preparation method, has high visible light degrading performance on organic pollutants in dye waste water, and contributes to recycling simultaneously.

Description

Be used for photochemical catalyst of degrading organic dye waste water pollutant and preparation method thereof
Technical field
The present invention relates to visible light-responded composite photo-catalyst, particularly for photochemical catalyst of degrading organic dye waste water pollutant and preparation method thereof.
Background technology
Since 20th century, along with the boosting of rapid growth of economy and industrialized production, made human life that earth-shaking variation take place.But huge threat and harm have been caused in this environment of also depending on for existence to the mankind simultaneously.At present, national governments have fully recognized the seriousness of problem of environmental pollution, and the depollution of environment is treated with the strategic height that problems such as energy development rise to the national survival and development of relation, and therefore the research and technology exploitation to this field receives much concern.Wherein the waste water from dyestuff pollution is particularly serious, and the colourity of waste water from dyestuff is dark, concentration is high, carcinogenicity is high, is difficult to degrade under field conditions (factors) or degrade with microbial method.Along with going deep into of studying, it is found that photocatalysis and correlation technique thereof all demonstrate tempting application prospect in all many-sides such as environmental pollution treatment technology, solar energy conversions in recent years.And photocatalysis oxidation technique is a kind of brand-new " green technology ", with characteristics such as its energy consumption is low, simple to operate, reaction condition is gentle, oxidisability is strong, cost is low, non-secondary pollutions, aspect environmental improvement, be subjected to people's generally attention day by day, and become the focus of various countries' industrial circle and academia's research.
Photochemical catalyst is a kind of semi-conducting material in essence, and when absorbing energy more than or equal to the light of its band-gap energy, the electronics on the valence band can be excited and transit to conduction band, thereby forms hole-electron pair.These have the carrier of very strong oxidation, reducing power, can will be adsorbed on semiconductor surface and the decomposition of chemical substance on every side, even mineralising are H 2O and CO 2Deng inorganic molecules.At present, in photocatalysis field research comparatively deep be nano-TiO 2Based photocatalyst, they have characteristics such as chemical property is stablized, resistance to worn, fast light burn into cost is low and nontoxic, except being used to degradation of organic substances and sterilization, also are widely used at the aspects such as preparation of photodissociation water and solar cell.Yet, (3.2eV) is wide for the band gap of titanium dioxide, only can be excited by the ultraviolet light of gross energy less than 4% in sunshine part (wavelength is less than 387nm), and to accounting in the solar spectrum 43% visible light part (wave-length coverage, 400-700nm) can't utilize, limit its large-scale application.Therefore, for more efficient use solar energy, satisfy the demand of indoor no UV environment light catalytic purifying simultaneously, it is imperative to seek visible light-responded efficiently photochemical catalyst.
Construct that method novel, the efficient visible light responsive photocatalyst mainly contains semi-conductive doping (metal ion or nonmetallic ion), photoactivate, semiconductor is compound and development of new visible light response catalyst etc.But from present result of study, their catalytic activitys under solar light irradiation are not very high, and also there is certain problem in stable aspect, and the photoactivate catalyst then is subjected to the restriction of the scope of application.Comparatively speaking, semiconductor compound photocatalyst has more potentiality to be exploited, and the semiconductor combinations choice is big, and chemical property is stable, has two semi-conductive physico-chemical properties concurrently, and these all are conducive to develop visible light response catalyst efficiently.
In recent years, Ag 3VO 4Because of its special band structure, make it under visible light, have good catalytic activity, and be subjected to common concern.Researchers adopt methods such as the precipitation method, hydro-thermal method successfully to prepare nanoscale Ag 3VO 4Particle, however its specific area is less, influences the effective active area of catalyst, unfavorable to the efficient that promotes photochemical catalyst.Therefore need carry out it composite modified, in the hope of developing the high efficiency photocatalyst under visible light.
Summary of the invention
Purpose of the present invention is for overcoming deficiency of the prior art, provide the preparation method simple, higher to the visible light degradation property of organic pollution in the waste water from dyestuff, be beneficial to the photochemical catalyst that is used for the degrading organic dye waste water pollutant and preparation method thereof of recycling simultaneously and use.
For solving this technical problem, the technical solution used in the present invention is:
Be used for the photochemical catalyst of degrading organic dye waste water pollutant, it is characterized in that: this catalyst is composited by magnesium ferrite and vanadic acid Nano silver grain; The chemical composition general formula is: mMgFe 2O 4/ Ag 3VO 4, wherein the chemical formula of magnesium ferrite is MgFe 2O 4, the chemical formula of vanadic acid silver is Ag 3VO 4M is MgFe 2O 4With Ag 3VO 4Mass ratio, 0＜m≤0.005.Preferably m is 0.002.
This Preparation of catalysts method may further comprise the steps:
(1) preparation of magnesium ferrite
Under condition of stirring, magnesium nitrate, ferric nitrate, citric acid be dissolved in the deionized water in 1: 2: 4.5 in molar ratio, regulate its pH value toward the ammoniacal liquor of above-mentioned mixed solution and dripping 30% and equal 7, continue to stir until forming green gel, this green gel is dry under 120 ℃ of temperature, grind, namely obtained bronzing magnesium ferrite powder in 3 hours at 700 ℃ of roasting temperatures again.
(2) preparation of vanadic acid silver
Under condition of stirring, vanadic anhydride was dissolved in the sodium hydroxide solution in 1: 6 in molar ratio, to the solution clear; Then liquor argenti nitratis ophthalmicus is slowly dropped in the above-mentioned solution, namely generate yellow mercury oxide; Precipitation removes by filter unnecessary ion after stirring ageing, the oven dry of gained solid 400 ℃ of roasting temperatures 2 hours, namely gets the vanadic acid aluminium powder at last after the cooling.
(3) preparation of magnesium ferrite-vanadic acid argentum nano composite material
Press magnesium ferrite/vanadic acid silver mass ratio, with magnesium ferrite and vanadic acid aluminium powder mixed grinding 10min, in 200-500 ℃ of roasting temperature 4 hours, namely get this catalyst finished product at last.
The catalyst of preparation is: magnesium ferrite-vanadic acid argentum nano composite material photochemical catalyst.
The application of this catalyst in the degrading organic dye waste water pollutant: the degradation rate of degraded rhodamine B dyestuff is almost 100%
Magnesium ferrite-vanadic acid silver nanoparticle composite photo-catalyst that the present invention adopts grinding-roasting method to prepare, this catalyst is active high, can absorbing wavelength less than the visible light of 600nm, this catalyst that makes the present invention prepare has very high visible absorption ability; And the catalytic activity higher than single semiconductor catalyst arranged, the organic pollution in the industrial wastewater of degrading quickly and efficiently.In addition, the catalyst of the present invention preparation also has that the preparation method is simple, applicable elements is loose, the photocatalytic degradation steady performance, therefore, has higher commercial application prospect.
Description of drawings
Fig. 1 is the active figure of catalyst catalytic degradation rhodamine B under visible light of embodiment 1～5 and comparative example 1～3 preparation.
Fig. 2 is the active figure of catalyst catalytic degradation rhodamine B under visible light of embodiment 2,6～8 preparations.
Fig. 3 is the X-ray powder diffraction (XRD) of the catalyst of embodiment 2 and comparative example 1,2 preparations.
Fig. 4 is that the UV, visible light of the catalyst of embodiment 2 and comparative example 1～3 preparation absorbs (UV-vis) spectrum.
The specific embodiment
Below further illustrate the present invention with embodiment, but the present invention is not limited to following examples.
Embodiment 1:
(1) takes by weighing 6.46g, 2.05g and 7.56g ferric nitrate, magnesium nitrate and citric acid respectively, under condition of stirring, be dissolved in the 20ml deionized water.Under 60 ℃ of temperature, toward the about 20ml of ammoniacal liquor of above-mentioned mixed solution and dripping 30%, regulate its pH value and equal 7, continue to stir until forming green gel.With this green gel under 120 ℃ of temperature dry 24 hours, obtain the black presoma, namely obtained bronzing magnesium ferrite powder finally by grinding in 3 hours at 700 ℃ of roasting temperatures.
(2) take by weighing 2.40g NaOH, 30 ℃ of stirring in water bath are dissolved in the 30ml deionized water, obtain sodium hydroxide solution.Take by weighing the 10.10g silver nitrate, be dissolved in the 30ml deionized water, 30 ℃ of stirring in water bath dissolvings obtain liquor argenti nitratis ophthalmicus.Under condition of stirring, slowly be added drop-wise to liquor argenti nitratis ophthalmicus in the sodium hydroxide solution then, generate yellow mercury oxide, stirred after 2 hours ageing 24 hours, remove unnecessary ion with deionized water and absolute ethyl alcohol flushing respectively, the gained solid is 80 ℃ of oven dry down in baking oven, roasting in muffle furnace at last, 1 ℃/min of heating rate was in 400 ℃ of following roastings 4 hours.Naturally namely get the Ag of precipitation method preparation after the cooling 3VO 4Catalyst.
(3) take by weighing the magnesium ferrite of 0.001g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 300 ℃ of roasting temperatures 4 hours, namely get the MgFe of 300 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.001 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 2:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.002g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 300 ℃ of roasting temperatures 4 hours, namely get the MgFe of 300 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.002 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 3:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.003g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 300 ℃ of roasting temperatures 4 hours, namely get the MgFe of 300 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.003 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 4:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.004g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 300 ℃ of roasting temperatures 4 hours, namely get the MgFe of 300 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.004 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 5:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.005g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 300 ℃ of roasting temperatures 4 hours, namely get the MgFe of 300 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.005 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 6:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.002g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 200 ℃ of roasting temperatures 4 hours, namely get the MgFe of 200 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.002 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 7:
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.002g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 400 ℃ of roasting temperatures 4 hours, namely get the MgFe of 400 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.002 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Embodiment 8
(1) with the step of (1) among the embodiment 1.
(2) with the step of (2) among the embodiment 1.
(3) take by weighing the magnesium ferrite of 0.002g and the vanadic acid silver of 1.0g respectively, press magnesium ferrite/vanadic acid silver mass ratio, with its mixed grinding 10min, in 500 ℃ of roasting temperatures 4 hours, namely get the MgFe of 500 ℃ of roastings after cooling off naturally at last 2O 4/ Ag 3VO 4Mass ratio is 0.002 MgFe 2O 4/ Ag 3VO 4Composite catalyst.
Comparative example 1:
MgFe 2O 4。The preparation method is with step (1) among the embodiment 1.
Comparative example 2:
Ag 3VO 4。The preparation method is with step (2) among the embodiment 1.
Comparative example 3:
N doped Ti O 2(N-TiO 2).The preparation method of this photochemical catalyst is as follows: get butyl titanate 10ml, add the 5ml glacial acetic acid, keep solution temperature about 25 ℃, behind the magnetic agitation 10min, slowly drip 30% concentrated ammonia liquor, to reacting liquid pH value be 9.With deionized water rinsing 5 times, 85 ℃ of oven dry, porphyrizes down 400 ℃ of roasting temperatures 2 hours, namely obtain yellow N-TiO at last after the cooling with white depositions 2The powder catalyst.
The evaluation method of photocatalytic activity is: take by weighing a certain amount of rhodamine B dyestuff, being made into concentration is 1 * 10 -5The solution of mol/L, pH is about 7.Measuring 100ml rhodamine B solution is in the crystal reaction tube of 5cm in diameter, xenon lamp with a 500W is light source, xenon lamp and reaction tube spacing 10cm, and between put the optical filter of a 420nm with elimination ultraviolet light part, fan is used for wind cooling temperature lowering simultaneously, and temperature is at 30-40 ℃ during reaction.Each reaction time catalizer consumption is 0.2g, and reactant liquor all stirs 1h before the reaction under dark condition, to reach the adsorption desorption balance.Percent of decolourization according to dyestuff after reaction a period of time is weighed activity of such catalysts.When the concentration of rhodamine B solution was in suitable scope, the absorbance A of the maximum absorption wave strong point of rhodamine B solution and the relation between the concentration C were followed Lambert-Beer's law, i.e. A=ε bC, then the percent of decolourization η=(A of rhodamine B solution 0-A t)/A 0A tFor extract the reactant liquor about 5ml every 5min, by centrifugation, measure the absorbance of supernatant liquor then with ultraviolet-visible spectrophotometer.All catalyst activities are the data behind the reaction 30min.
The activity of the photocatalytic degradation rhodamine B of above embodiment 1～5 and Comparative Examples 1～3 described catalyst is seen Fig. 1.The activity of the visible light photocatalytic degradation rhodamine B of the catalyst that embodiment 2 and embodiment 6～8 make is seen Fig. 2.A1～a8 is the catalyst that makes of corresponding embodiment 1～8 respectively, and b1～b3 is the catalyst that makes of comparative example 1～3 respectively then.By evaluation result as can be known, adopt the photochemical catalyst that is used for degradation of dye waste water organic pollution under the visible light of preparation method's preparation of the present invention to have very high photocatalytic activity and service life.The degradation rate of the catalyst degradation rhodamine B dyestuff that embodiment 2 makes under radiation of visible light is almost 100%.
X-ray powder diffraction (XRD) characterization result of the catalyst that embodiment 2 and comparative example 1～2 make is seen Fig. 3, and the UV, visible light diffuse reflection of the catalyst that embodiment 2 and comparative example 1～3 make absorbs (UV-vis) characterization result and sees Fig. 4.As can be seen from Figure 3, only there is MgFe in the catalyst 2O 4And Ag 3VO 4Phase because the collaborative coupling between two semiconductors, make light induced electron-hole to this two alternate can directional migration, thereby effectively promoted the separation of electron-hole pair, therefore improved its photocatalytic activity greatly.UV, visible light diffuse reflection absorption spectrum characterization result shows that embodiment 2 has very strong absorbability in less than 600nm visible region scope, and absorbability is far longer than N-TiO 2This is consistent with above-mentioned catalytic performance test result, and namely the catalyst that makes of embodiment 2 has very high visible light degrading waste water dyestuff organic pollution performance.

Claims (1)

1. be used for the preparation method of the photochemical catalyst of degrading organic dye waste water pollutant, this catalyst is composited by magnesium ferrite and vanadic acid Nano silver grain, and the chemical composition general formula is:
M MgFe 2O 4/ Ag 3VO 4, m is MgFe 2O 4With Ag 3VO 4Mass ratio, 0＜m≤0.005 is characterized in that may further comprise the steps:
(1) preparation of magnesium ferrite
Under condition of stirring, 1:2:4.5 is dissolved in magnesium nitrate, ferric nitrate, citric acid in the deionized water in molar ratio, regulates its pH value toward the ammoniacal liquor of above-mentioned mixed solution and dripping 30% and equals 7, continue to stir until the formation green gel, with this green gel in 120 oDry under the C temperature, grind, again 700 oThe C roasting temperature namely obtained bronzing magnesium ferrite powder in 3 hours;
(2) preparation of vanadic acid silver
Under condition of stirring, 1:6 is dissolved in vanadic anhydride in the sodium hydroxide solution in molar ratio, to the solution clear; Then liquor argenti nitratis ophthalmicus is slowly dropped in the above-mentioned solution, namely generate yellow mercury oxide; Precipitation removes by filter unnecessary ion after stirring ageing, the oven dry of gained solid is at last 400 oC roasting temperature 2 hours namely gets the vanadic acid aluminium powder after the cooling;
(3) preparation of magnesium ferrite-vanadic acid argentum nano composite material
Press magnesium ferrite/vanadic acid silver mass ratio, with magnesium ferrite and vanadic acid aluminium powder mixed grinding 10 min, at last in 200 – 500 oC roasting temperature 4 hours namely gets this catalyst finished product.
CN201210054669XA 2012-03-05 2012-03-05 Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof Expired - Fee Related CN102600865B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210054669XA CN102600865B (en) 2012-03-05 2012-03-05 Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210054669XA CN102600865B (en) 2012-03-05 2012-03-05 Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof

Publications (2)

Publication Number Publication Date
CN102600865A CN102600865A (en) 2012-07-25
CN102600865B true CN102600865B (en) 2013-08-14

Family

ID=46518852

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210054669XA Expired - Fee Related CN102600865B (en) 2012-03-05 2012-03-05 Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof

Country Status (1)

Country Link
CN (1) CN102600865B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104028282B (en) * 2014-06-26 2015-09-09 常州大学 The preparation method of a kind of magnesium ferrite/silver vanadate composite photo-catalyst
CN104028287B (en) * 2014-06-26 2015-09-09 常州大学 A kind of preparation method of magnesium ferrite/silver phosphate composite photocatalyst
CN104437573B (en) * 2014-11-11 2016-06-15 江苏大学 A kind of ZnFe2O4/Ag3PO4The preparation method of composite photo-catalyst
CN105642310B (en) * 2014-11-14 2018-08-21 河海大学 A kind of Ag3VO4Modified composite magnetic photochemical catalyst and its preparation method and application
CN105289660B (en) * 2015-10-27 2017-12-05 江苏大学 A kind of preparation method and use of magnesium ferrite/molybdenum sulfide heterojunction nano-wire
CN109663594A (en) * 2019-01-23 2019-04-23 景德镇陶瓷大学 It is a kind of that MgFe is prepared using non-hydrolytic sol-gel process2O4The method of/C-material and its material obtained
CN111701614B (en) * 2020-07-01 2023-03-14 江苏泷膜环境科技有限公司 TaON/Ag 3 VO 4 Foamed nickel photocatalytic film and preparation method and application thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462047B (en) * 2009-01-05 2010-08-25 浙江师范大学 Photocatalyst for degrading organic pollutant and preparation method thereof
CN102008964B (en) * 2010-11-08 2012-06-27 浙江师范大学 Lanthanum vanadate-based visible light responsive photocatalyst and preparation method thereof

Also Published As

Publication number Publication date
CN102600865A (en) 2012-07-25

Similar Documents

Publication Publication Date Title
CN102600865B (en) Photocatalyst for degrading organic dye waste water pollutants and preparation method thereof
CN102335602B (en) Bismuth tungstate composite photocatalyst, preparation method thereof, and application thereof
CN104128184A (en) Floating type CoFe2O4/TiO2/floating bead composite photocatalyst and preparation method thereof
CN104258886B (en) A kind of silver orthophosphate/oxygen vacancies type titanium dioxide composite photocatalyst and preparation method
CN103028386B (en) Ti<3+> and carbon codoped TiO2 photocatalyst with visible-light activity and preparation method of TiO2 photocatalyst
CN102489293B (en) Preparation method of tin dioxide/bismuth tungstate composite photocatalyst
CN103861575A (en) Method for preparing doped-modified TiO2/graphene composite material
CN104226339A (en) Visible-light-induced photocatalyst Bi4O5Br2 and preparation method thereof
CN108940332B (en) High-activity MoS2/g-C3N4/Bi24O31Cl10Preparation method of composite photocatalyst
CN103191725B (en) BiVO4/Bi2WO6 composite semiconductor material as well as hydrothermal preparation method and application thereof
CN102380367B (en) Control synthetic method of high-visible-light-activity mixed crystal type BiVO4 photocatalysts
CN102728342A (en) Preparation method of bismuth vanadate visible light photocatalysis material
CN101773841A (en) Photocatalyst for water treatment
CN106334554A (en) ZnO/Ag composite nano-photocatalyst with high-efficiency photocatalytic activity under visible lights
CN109174082A (en) It is a kind of to prepare BiVO4/MnO2The method of composite photocatalyst oxidant
CN102698784B (en) Visible light response catalyst and preparation method thereof
CN100427204C (en) Method for preparing Ag sensitized zinc oxide photocatalyst with visible light activity
CN106423223B (en) A kind of pie porous structure MoSe2@TiO2 photochemical catalyst and preparation method thereof
CN105126799A (en) Preparation and photocatalytic degradation method of TiO2/SiO2 composite oxide
CN104096558A (en) Bi2MoO6-ZnO composite photocatalyst and preparation method thereof
CN103551138B (en) A kind of preparation method of bismuth oxide sensitized titanium dioxide nano pipe light catalyst and the application in degradable organic pollutant thereof
CN103721699A (en) NaInO2 photocatalyst and preparation method thereof
CN106362742A (en) Ag/ZnO nano-composite, preparation method thereof and application of composite
CN106975509B (en) Preparation method and application of nitrogen and iron co-doped bismuth vanadate visible-light-driven photocatalyst
CN104707635A (en) High-activity phosphor-doped bismuth vanadate photocatalyst, preparation method and applications thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130814

Termination date: 20160305