CN106492786A - One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst - Google Patents
One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst Download PDFInfo
- Publication number
- CN106492786A CN106492786A CN201610832279.9A CN201610832279A CN106492786A CN 106492786 A CN106492786 A CN 106492786A CN 201610832279 A CN201610832279 A CN 201610832279A CN 106492786 A CN106492786 A CN 106492786A
- Authority
- CN
- China
- Prior art keywords
- mnwo
- manganese
- tungstate
- composite photocatalyst
- prepares
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims description 15
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims abstract description 17
- 235000002867 manganese chloride Nutrition 0.000 claims abstract description 17
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims abstract description 15
- 239000011565 manganese chloride Substances 0.000 claims abstract description 15
- 229940099607 manganese chloride Drugs 0.000 claims abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- CRLHSBRULQUYOK-UHFFFAOYSA-N dioxido(dioxo)tungsten;manganese(2+) Chemical compound [Mn+2].[O-][W]([O-])(=O)=O CRLHSBRULQUYOK-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract description 9
- 229940043267 rhodamine b Drugs 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002086 nanomaterial Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 16
- 230000001699 photocatalysis Effects 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000036626 Mental retardation Diseases 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- -1 conversion Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to technical field of nano material, with sodium tungstate, manganese chloride and tripolycyanamide as raw material, is prepared for g C using heat treating process3N4/MnWO4Heterojunction photocatalyst, can be used for degradable organic pollutant rhodamine B under visible light, for environmental conservation significant.
Description
Technical field
The invention belongs to technical field of nano material, with sodium tungstate, manganese chloride and tripolycyanamide as raw material, using heat treatment
Method is prepared for g-C3N4/MnWO4Heterojunction photocatalyst, can be used for degradable organic pollutant rhodamine B under visible light, for
Environmental conservation is significant.
Background technology
Environmental problem is one of major issue that human kind sustainable development faces.Traditional pollution treatment technology is substantially only
It is that the transfer of pollutant, conversion, dilution are processed, does not fundamentally realize the thorough degraded of pollutant.Photocatalysis technology is
Mental retardation developed in recent years, efficient novel environment friendly new technique, can be used for Organic Pollutants in Wastewater, heavy metal contaminants
Degraded, the removal of harmful substance in air, the advanced treating of drinking water and deodorization and sterilization etc..Therefore, with the change of solar energy
Photocatalitic Technique of Semiconductor based on conversion, storage becomes one of means of solve problem.
Carbonitride is non-metal semiconductor materials emerging in recent years, is the new low density high hardness of synthetic
Nonpolar covalent key compound, its carbon nitrogen mol ratio is about 0.75.Carbonitride (the g-C of wherein class graphite phase structure3N4) due to
Its good performance is widely studied.g-C3N4Do not dissolve in and do not react with conventional solvent, place the several months in atmosphere, and
The mass ratio of C, N, H still keeps constant, has preferable stability, so g-C in sour or aqueous slkali of the pH value for 0-143N4
Chemical property is very stable.The graphite-phase g-C that at 550 DEG C prepared by calcination reaction3N4Energy gap be 2.7eV, good due to which
Bandwidth and appropriate valence band (- 1.13eV) and conduction band (1.57eV) position, be easy under visible light be excited, receive
The concern of Many researchers is arrived.In photocatalytic degradation, pure g-C3N4Due to its very high light induced electron and the Mixed Circumscription in hole
Its photocatalysis effect.At present, two or more light-catalysed being combined is considered as a kind of reduction light induced electron and hole
Compound effective ways, so that improve its photocatalysis effect.Manganese tungstate (MnWO4) obtained due to its good physicochemical properties
Extensive concern is arrived.Seldom have and manganese tungstate (MnWO at present4) semiconductors coupling forms hetero-junctions and effectively can degrade dirt
Dye thing.Such as MnWO4/TiO2Deng.There is presently no g-C3N4With MnWO4It is compounded to form hetero-junctions and light-catalysed application.
Content of the invention
It is an object of the present invention to provide one kind is with sodium tungstate, manganese chloride and tripolycyanamide as raw material, closed using heat treating process
Method into the nano composite photo-catalyst with good visible light catalysis activity.
The present invention is realized by following steps：
(1) a certain amount of tripolycyanamide is weighed, after grinding is uniform, is placed in Muffle furnace and is calcined, obtain g-C3N4Photocatalyst；
Calcining heat is 550 DEG C, and calcination time is 4h.
(2) weigh sodium tungstate respectively and manganese chloride be respectively dissolved in deionized water, ultrasound is uniform, obtain manganese chloride solution and
Sodium tungstate solution；Then manganese chloride solution is lentamente added drop-wise in sodium tungstate solution with dropper, obtains white manganese tungstate suspended
Liquid；It is slowly added dropwise and is conducive to sodium tungstate and manganese chloride fully to react, the amount ratio of sodium tungstate and manganese chloride material is 1:1.
(3) quantitative g-C is weighed3N4It is added in white manganese tungstate suspension prepared by step (2), g-C3N4With manganese tungstate
Mass ratio is 6:4-9:1, after ultrasound is uniform, solution ph is adjusted to 9 with the sodium hydroxide solution of 1mol/L, be subsequently poured into water
In hot kettle, it is placed in baking oven, hydrothermal temperature is 180 DEG C, and the hydro-thermal time is 12h, and the purpose of hydro-thermal is to allow reacting substance in high temperature
Synthesize nano-complex under high pressure hydrothermal condition.
(4) treat that water heating kettle is cooled to room temperature, be centrifuged with ethanol and deionized water respectively, to wash away remaining chlorination in sample
Then the sample for obtaining is dried in 60 DEG C of baking ovens by manganese and sodium tungstate inorganic contaminants.
(5), after sample drying, it is placed in Muffle furnace and calcines；Calcining heat is 450 DEG C, and calcination time is 2h, obtains g-
C3N4/MnWO4Composite photo-catalyst, calcining purpose is to allow sample preferably to crystallize.
G-C in the present invention3N4/MnWO4Heterojunction structure is determined that by X-ray diffraction (XRD) such as Fig. 1 removes g-C in XRD3N4
Two characteristic peaks outside, other peaks are MnWO4Characteristic peak, meet with standard card 70-1497；The spectrogram shows g-
C3N4/MnWO4Hetero-junctions is successfully prepared by thermal polymerization.
g-C3N4/MnWO4The composition of composite heterogenous junction material is by X-ray energy dispersion spectrogram (EDS) determination, such as Fig. 2, EDS
In occur in that the characteristic peak of C, N, Mn, W, and O；The collection of illustrative plates shows, synthesizes prepared g-C by said method3N4/MnWO4Compound
Material contains all elements which has.
Another object of the present invention：By g-C3N4/MnWO4It is used for photocatalytic degradation under visible ray as catalysis material
Organic dyestuff sewage.For environmental conservation has far-reaching significance.
Beneficial effect
Using the MnWO prepared by simple and quick heat treating process4/g-C3N4Hetero-junctions, under visible light rhodamine B degradation
Dyestuff shows excellent photocatalytic activity；Present invention process is very simple, cheap and easy to get, with low cost, and the response time is shorter,
So as to reduce energy consumption and reaction cost, it is easy to produce in batches, nontoxic, meet environmental friendliness requirement.
Description of the drawings
Fig. 1 is prepared MnWO4/g-C3N4The XRD diffraction spectrograms of heterojunction composite photocatalyst, MnWO in figure4/g-
C3N4Heterojunction composite shows MnWO respectively4And g-C3N4The characteristic peak of composition.
Fig. 2 is prepared MnWO4/g-C3N4Heterojunction composite photocatalyst EDS figure, as we can see from the figure Mn, W, O,
C and N element, without other elements, illustrate in the sample for synthesizing without impurity.
Fig. 3 is prepared MnWO4/g-C3N4The visible light photocatalytic degradation rhodamine B solution of heterojunction composite photocatalyst
When m- degradation rate graph of a relation；It can be seen that pure g-C in figure3N4And MnWO4The degradation rate of rhodamine B is very low under visible light, and
MnWO4/g-C3N4The degradation rate of hetero-junctions is then very high.Illustrate the MnWO for synthesizing4/g-C3N4Hetero-junctions catalyst significantly can be carried
Photocatalysis performance is risen, and the degraded of rhodamine B sewage can be applied to well.
Specific embodiment
With reference to embodiment, the present invention is described in detail, so that those skilled in the art more fully understand this
Bright, but the invention is not limited in following examples.
Case study on implementation 1
10g tripolycyanamide is weighed, is placed in Muffle furnace after grinding is uniform and is calcined, it is 50 DEG C to arrange Muffle furnace initial temperature,
Muffle furnace is warming up to 550 DEG C with the heating rate of 2.3 DEG C/min, and reacts 4h at such a temperature, naturally cooled to room temperature and obtain
Arrive sample g-C3N4.
Case study on implementation 2
(1) 0.164g sodium tungstates are weighed respectively and 0.0989g manganese chlorides is respectively dissolved in deionized water, ultrasound is uniform；So
Manganese chloride solution is lentamente added drop-wise in sodium tungstate solution with dropper afterwards, obtains white manganese tungstate suspension.
(2) pH value of wolframic acid manganese solution is adjusted to 9 with the sodium hydroxide solution of 1mol/L, then pour solution into 50mL water
In hot kettle, water heating kettle is placed in 180 DEG C of baking oven 12h.
(3) to be cooled to after room temperature, it is centrifuged with ethanol and deionized water respectively, to wash away the Organic substance in sample and nothing
Then the sample for obtaining is dried in 60 DEG C of baking ovens by machine thing impurity.Finally give MnWO4Sample.
Case study on implementation 3
(1) 0.164g sodium tungstates are weighed respectively and 0.0989g manganese chlorides is respectively dissolved in deionized water, ultrasonic agitation is to equal
Even；Then manganese chloride solution is lentamente added drop-wise in sodium tungstate solution with dropper, obtains white manganese tungstate suspension.
(2) 0.228g-C is weighed3N4It is added in the white manganese tungstate suspension of step one preparation, g-C3N4With manganese tungstate
Mass ratio is 6:4, after ultrasound is uniform, solution ph is adjusted to 9 with the sodium hydroxide solution of 1mol/L, be subsequently poured into water heating kettle
In, it is placed in baking oven.Hydrothermal temperature is 180 DEG C, and the hydro-thermal time is 12h.The purpose of hydro-thermal is to allow reacting substance in High Temperature High Pressure
Synthesize nano-complex under hydrothermal condition.
(3) to be cooled to after room temperature, it is centrifuged with ethanol and deionized water respectively, then the sample for obtaining is dried at 60 DEG C
Dry in case.
(4) dry sample is placed in Muffle furnace and is calcined, Muffle furnace initial temperature is put for 50 DEG C, with the liter of 3 DEG C/min
Muffle furnace is warming up to 450 DEG C by warm speed, and reacts 2h at such a temperature, is naturally cooled to room temperature and is obtained 60%g-C3N4/
CdWO4Hetero-junctions sample.
We can be according to the g-C for adding different amounts3N4(such as 0.3546g, 0.6081g and 1.368g g-C3N4) prepare
The g-C of different proportion3N4/CdWO4(70wt%g-C3N4/CdWO4, 80wt%g-C3N4/CdWO4, and 90wt%g-C3N4/
CdWO4) hetero-junctions sample；They are investigated respectively with same catalyst amount (50mg) condition, under visible light illumination to rhodamine B
(10mg/L) degradation effect, photocatalysis result show g-C3N4/CdWO4Hetero-junctions catalyst can be obviously improved photocatalysis work
Property.Additionally, 90%g-C3N4/CdWO4Hetero-junctions shows optimal catalytic performance, and under 4h illumination, rhodamine B degradation rate can
70% is reached, prepared g-C is illustrated3N4/CdWO4Hetero-junctions catalyst can be applied to the improvement of rhodamine B sewage.
Claims (6)
1. one kind prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, it is characterised in that comprise the following steps that：
(1) quantitative g-C is weighed3N4It is added in white manganese tungstate suspension, after ultrasound is uniform, is adjusted with sodium hydroxide solution molten
Liquid pH value is subsequently poured in water heating kettle to 9, is placed in baking oven, and hydrothermal temperature is 180 DEG C, and the hydro-thermal time is 12h；
(2) treat that water heating kettle is cooled to room temperature, be centrifuged with ethanol and deionized water respectively, with wash away remaining manganese chloride in sample and
Sodium tungstate inorganic contaminants, then by the sample drying for obtaining；
(3), after sample drying, it is placed in Muffle furnace and calcines；Calcining heat is 450 DEG C, and calcination time is 2h, obtains MnWO4/g-
C3N4Composite photo-catalyst.
2. one kind as claimed in claim 1 prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, its feature exist
In, in step (1), g-C3N4Mass ratio with manganese tungstate is 6:4-9:1.
3. one kind as claimed in claim 2 prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, its feature exist
In, in step (1), g-C3N4Mass ratio with manganese tungstate is 9:1.
4. one kind as claimed in claim 1 prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, its feature exist
In, in step (1), the concentration of sodium hydroxide solution is 1mol/L.
5. one kind as claimed in claim 1 prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, its feature exist
In, in step (2), sample drying refers to dry in 60 DEG C of baking ovens.
6. one kind as claimed in claim 1 prepares MnWO4/g-C3N4The method of heterojunction composite photocatalyst, its feature exist
In the preparation method of the white manganese tungstate suspension is as follows：Weigh sodium tungstate respectively and manganese chloride is respectively dissolved in deionized water
In, ultrasound is uniform, obtains manganese chloride solution and sodium tungstate solution；Then manganese chloride solution is lentamente added drop-wise to wolframic acid with dropper
In sodium solution, white manganese tungstate suspension is obtained；It is slowly added dropwise and is conducive to sodium tungstate and manganese chloride fully to react, sodium tungstate and chlorine
The amount ratio for changing manganese material is 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832279.9A CN106492786A (en) | 2016-09-19 | 2016-09-19 | One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832279.9A CN106492786A (en) | 2016-09-19 | 2016-09-19 | One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106492786A true CN106492786A (en) | 2017-03-15 |
Family
ID=58290243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610832279.9A Pending CN106492786A (en) | 2016-09-19 | 2016-09-19 | One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106492786A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519865A (en) * | 2017-09-21 | 2017-12-29 | 柳州若思纳米材料科技有限公司 | A kind of preparation method of manganese tungstate dioxide composite Mn catalyst |
| CN107670683A (en) * | 2017-10-16 | 2018-02-09 | 陕西科技大学 | A kind of FeVO4@g‑C3N4Core shell structure heterojunction photocatalyst and preparation method thereof |
| CN110154182A (en) * | 2019-06-10 | 2019-08-23 | 浙江农林大学 | A kind of bionical live standing tree generates the preparation method of negative oxygen ion engineered wood |
| CN116809107A (en) * | 2023-06-27 | 2023-09-29 | 辽宁大学 | ZnWO (zinc-oxygen) device 4 /g-C 3 N 4 Heterostructure nanofiber catalyst and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525262A (en) * | 2014-12-29 | 2015-04-22 | 辽宁石油化工大学 | Preparation method of phosphotungstic acid and carbon nitride composite photocatalyst |
| CN105457657A (en) * | 2015-12-16 | 2016-04-06 | 江苏大学 | Method for preparing CdS/MnWO4 heterojunction compound photo-catalyst |
-
2016
- 2016-09-19 CN CN201610832279.9A patent/CN106492786A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525262A (en) * | 2014-12-29 | 2015-04-22 | 辽宁石油化工大学 | Preparation method of phosphotungstic acid and carbon nitride composite photocatalyst |
| CN105457657A (en) * | 2015-12-16 | 2016-04-06 | 江苏大学 | Method for preparing CdS/MnWO4 heterojunction compound photo-catalyst |
Non-Patent Citations (3)
| Title |
|---|
| ASHOK KUMAR CHAKRABORTY: "Photocatalytic Degradation of 2-Propanol and Phenol Using Au Loaded MnWO4 Nanorod Under Visible Light Irradiation", 《J CLUST SCI》 * |
| KAI HUANG,ET.AL.: "Hydrothermal synthesis of g-C3N4/CdWO4 nanocomposite and enhanced photocatalytic activity for tetracycline degradation under visible light", 《CRYSTENGCOMM》 * |
| M. SHAMSHI HASSAN，ET.AL.: "Monodispersed 3D MnWO4-TiO2 composite nanoflowers photocatalysts for environmental remediation", 《CURRENT APPLIED PHYSICS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519865A (en) * | 2017-09-21 | 2017-12-29 | 柳州若思纳米材料科技有限公司 | A kind of preparation method of manganese tungstate dioxide composite Mn catalyst |
| CN107670683A (en) * | 2017-10-16 | 2018-02-09 | 陕西科技大学 | A kind of FeVO4@g‑C3N4Core shell structure heterojunction photocatalyst and preparation method thereof |
| CN107670683B (en) * | 2017-10-16 | 2020-04-10 | 陕西科技大学 | FeVO4@g-C3N4Core-shell structure heterojunction photocatalyst and preparation method thereof |
| CN110154182A (en) * | 2019-06-10 | 2019-08-23 | 浙江农林大学 | A kind of bionical live standing tree generates the preparation method of negative oxygen ion engineered wood |
| CN116809107A (en) * | 2023-06-27 | 2023-09-29 | 辽宁大学 | ZnWO (zinc-oxygen) device 4 /g-C 3 N 4 Heterostructure nanofiber catalyst and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104307552B (en) | Preparation method of TiO 2/g-C3N 4 composite visible-light-driven photocatalyst | |
| CN104888753B (en) | A kind of stannic disulfide/titanium dioxide composite photocatalyst and preparation method thereof | |
| CN105728010A (en) | Preparation method of antibacterial silver molybdate and graphite-phase carbon nitride composite visible-light-induced photocatalyst | |
| CN107233906A (en) | A kind of Preparation method and use of redox graphene/pucherite/nitridation carbon composite | |
| CN106492786A (en) | One kind prepares MnWO4/g‑C3N4The method of heterojunction composite photocatalyst | |
| CN102039117B (en) | Method for preparing loaded nano TiO2 composite material by using precipitated white carbon black as carrier | |
| CN109107601A (en) | A kind of graphite phase carbon nitride nanometer chip base composite photocatalyst material and its preparation method and application | |
| CN109092343A (en) | A kind of visible-light response type g-C3N4/BiVO4The preparation method and applications of heterojunction material | |
| CN106824157A (en) | A kind of modified composite titania material and preparation method thereof, application | |
| CN108355698A (en) | A kind of preparation method of O doped graphites phase carbon nitride nanometer sheet powder | |
| CN106391059A (en) | Preparation method of ZnO/MoS2 nanosheet compound photocatalyst | |
| CN104475070A (en) | Preparation method for mesoporous hollow spherical TiO2 having high visible light catalysis performance | |
| CN112007632B (en) | Flower-shaped SnO 2 /g-C 3 N 4 Preparation method of heterojunction photocatalyst | |
| CN106563485A (en) | Carbon nitride/potassium calcium niobate composite material and preparing method and application thereof | |
| CN107376900A (en) | The preparation method and applications of bismuth molybdate ultrathin nanometer piece catalysis material | |
| CN104475131B (en) | Visible light response type nanosheet bismuth oxychloride catalyst and preparation method thereof | |
| CN109550500A (en) | It is a kind of can Magnetic Isolation graphene-based zinc-iron mixing bimetallic oxide photochemical catalyst preparation method and applications | |
| CN108273540A (en) | A kind of Mo doped graphites phase carbon nitride nanometer sheet powder and preparation method thereof | |
| CN107890880A (en) | A kind of preparation method of Nano-size Porous Graphite phase carbon nitride/metatitanic acid manganese composite photo-catalyst | |
| CN107837816A (en) | Fe2O3/g‑C3N4Compound system and preparation method and application | |
| CN104927097B (en) | A kind of method that microwave-hydrothermal method prepares nano titanium oxide/Chitosan Composites | |
| CN107649153A (en) | A kind of method that solvent-thermal method prepares BiOCl photochemical catalysts | |
| CN107376943A (en) | A kind of preparation method and purposes of calcium niobate potassium/cadmium sulfide composite material | |
| CN105645470A (en) | Method for preparing nano flaky molybdenum trioxide | |
| CN102502821B (en) | Mixed organic solvent-thermal method for preparing spherical or hollow spherical BiVO4 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |