CN106311258A - Preparation method of ferric vanadate photocatalysts - Google Patents
Preparation method of ferric vanadate photocatalysts Download PDFInfo
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- CN106311258A CN106311258A CN201610843176.2A CN201610843176A CN106311258A CN 106311258 A CN106311258 A CN 106311258A CN 201610843176 A CN201610843176 A CN 201610843176A CN 106311258 A CN106311258 A CN 106311258A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 17
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 title abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003792 electrolyte Substances 0.000 claims abstract description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 235000002639 sodium chloride Nutrition 0.000 claims description 11
- 239000011780 sodium chloride Substances 0.000 claims description 10
- 229960002668 sodium chloride Drugs 0.000 claims description 10
- 125000002091 cationic group Chemical group 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000012798 spherical particle Substances 0.000 claims description 4
- 230000003749 cleanliness Effects 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 17
- 239000012065 filter cake Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000002999 depolarising effect Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011684 sodium molybdate Substances 0.000 description 2
- 235000015393 sodium molybdate Nutrition 0.000 description 2
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229910017135 Fe—O Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical compound [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 230000005621 ferroelectricity Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000003836 solid-state method Methods 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/847—Vanadium, niobium or tantalum or polonium
- B01J23/8472—Vanadium
-
- B01J35/39—
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/348—Electrochemical processes, e.g. electrochemical deposition or anodisation
Abstract
The invention discloses a preparation method of ferric vanadate photocatalysts. According to the method, firstly, a direct current electrolysis method is used; by controlling the current density, the electrolyte concentration and the temperature, ferric vanadate with different appearance structures and particle diameters is prepared; then, products obtained at an anode are cleaned and filtered; obtained filter cake is dried for 4 to 6h at the temperature of 80 DEG C to 100 DEG C; natural cooling is performed to room temperature; finally, at the air atmosphere, the temperature is raised to 500 to 700 DEG C at the temperature rise speed of 2.5 to 10 DEG C/min; high-temperature roasting is performed for 3 to 5 h; the ferric vanadate with high purity and high cleanness degree can be obtained; the composition is FeVO4. The product obtained by controlling the corresponding conditions has the main appearance of ball-shaped particles and micro nanometer lines.
Description
Technical field
The invention belongs to inorganic catalysis material technical field, the preparation side of a kind of ferric vandate photocatalyst
Method.
Background technology
In recent years, a class had ABO4The vanadate material of novel visible photoresponse of scheelite/wolframite type structure
Material is widely used in photocatalysis field.Vanadate because of its distinguished molecular structure and chemico-physical properties luminous,
Piezoelectricity and ferroelectricity field have a wide range of applications and are considered as a big approach of raising photocatalytic applications.
FeVO4As the emerging member in vanadate photocatalyst material family, researcher is for its photocatalysis performance
Correlational study is also in initial period.From FeVO4First being reported by Idota can be as a kind of promising Li-Ion rechargeable battery
Electrode material since, researcher finds its electrode material as Li-Ion rechargeable battery, more higher than graphite electrode has
Specific capacity, thus attracted the very big concern of scientific research person.In recent years, FeVO is found again4There is the catalysis of oxidation of hydrocarbons
Ability.As the typical n-type semiconductor of one, FeVO4Pressed powder for yellow.There are four kinds of crystalline structures: three oblique types, just
Hand over I type, orthogonal II type and monocline type, the most only three oblique types can prepare at ambient pressure.The FeVO of three oblique types4There is special chain
Structure.
Ferric ion occupies three kinds of independent site positions, and two of which is at the FeO of distortion6In octahedron, one
The FeO of distortion5In trigonal biyramid.Fe-O polyhedron defines, by common rib, the tangent bend chain that a unique hexaploid is long-pending, with
VO4 tetrahedron combines, and defines FeVO4Three-layer laminated network structure.The structure of this stratiform has certain layer gap space,
Can be as the activating area of photoreaction, beneficially the carrying out of light-catalyzed reaction.Interlayer in structure is likely to become and photoproduction
The receptor that electronics combines, thus effectively reduce the compound of electronics and hole, the final photo-quantum efficiency improving reaction.
Main preparation methods has high-temperature solid phase reaction method, conventional hydrothermal method and liquid phase method.High temperature solid-state method method is simple, but
Need pyroreaction energy consumption big；Reaction uniformity coefficient is poor, and the sample of generation is thick, tend to have impurity.Full-boiled process prepares powder body material
A kind of traditional method, but the reaction condition of High Temperature High Pressure is more harsh and has the shortcomings such as response time length.Liquid-phase reflux method
Simply, but the response time is long, and reactions steps is more, needs strictly to control reaction condition, otherwise tends to have impurity and generates mutually.Base
Understand in the studies above, develop a kind of oblique type FeVO of eco-friendly Fast back-projection algorithm three4The technique of catalysis material is very must
Want.
Publication No. " CN 104357875A ", entitled " a kind of side utilizing cationic membrane electrolysis to prepare iron molybdate
Method " Chinese patent a kind of method utilizing cationic membrane electrolysis to prepare iron molybdate is disclosed, i.e. with iron plate as anode, with inertia
Electrode is negative electrode, with the aqueous solution containing depolarizing agent and sodium molybdate as anolyte, with acid solution, aqueous slkali or saline solution as the moon
Pole liquid；In the two-compartment cell with cationic membrane as barrier film, the mode of employing constant-current electrolysis or constant-potential electrolysis controls temperature and is
Room temperature carries out electrolysis to 90 DEG C and contains depolarizing agent and the aqueous solution of sodium molybdate, until Na+Ion is transferred completely into cathode chamber；Will
The cleaning limit, product deionized water limit obtained in anode chamber is filtered, and it is 100-200 DEG C of dry 1-that the filter cake obtained controls temperature
2h, obtains that purity is high, iron molybdate without dephasign.
Summary of the invention
Long in order to solve the response time in ferric vandate preparation process of the prior art, additive is many and operation is complicated, product
Thing impurity is many, is not readily separated the technical problems such as purification, it is an object of the invention to provide short ferric vandate light of a kind of response time
The preparation method of catalyst, the method is easily separated, and morphology controllable is simple to operate, it is easy to industrialized production.
Technical scheme is specifically described as follows.
The present invention provides the preparation method of a kind of ferric vandate photocatalyst, specifically comprises the following steps that
(1) with pure iron sheet as anode, with inert electrode as negative electrode, with sodium metavanadate and sodium-chloride water solution as anolyte,
With hydrochloric acid solution or sodium chloride solution as catholyte, in the two-compartment cell that cationic membrane is barrier film, use constant-current electrolysis
Mode, prepares the ferric vandate presoma of different structure and size by controlling electric current density, concentration of electrolyte and temperature；
(2) after electrolysis terminates, collect the product obtained on anode, clean, filter, be dried, naturally cool to room temperature, then
Heat treatment under air atmosphere, obtains the ferric vandate photocatalyst that purity is high, cleanliness factor is high.
In the present invention, in step (1), sodium metavanadate concentration is 0.1mol/L-0.3mol/L, and sodium chloride concentration is 1-
1.5mol/L。
In the present invention, in step (1), the concentration of described catholyte is 0.1mol/L-0.3mol/L.
In the present invention, in step (1), the temperature utilizing water bath with thermostatic control to control electrolysis is 20-70 DEG C.
In the present invention, in step (1), control anodic current density is 10-50mA/cm2。
In the present invention, in step (2), baking temperature is 80-100 DEG C, and drying time is 4-6h.
In the present invention, in step (2), heat treatment process is as follows: with the heating rate of 2.5-10 DEG C/min under air atmosphere
It is warming up to 500-700 DEG C, high-temperature roasting 3-5h.
In the present invention, the appearance structure of the ferric vandate that above-mentioned preparation method obtains is micro-nano spherical particle and micro-nano rice noodle
Structure.
Compared to the prior art, the beneficial effects of the present invention is:
The preparation method of a kind of ferric vandate photocatalyst of the present invention, it uses cationic membrane electrolysis to prepare, by control
Electric current density processed, concentration of electrolyte and temperature prepare ferric vandate (electric current density increase, the electrolysis of different structure and size
When liquid concentration improves, the structure of product changes to micro-nano line structure from micro-nano spherical particle).Preparation process is simple and is prone to
Operation, anolyte composition is single, without other additives, and product is without dephasign, it is easy to industrialized production；, on the other hand, product
For the other pressed powder of micro/nano level, standing can precipitate, it is easy to washes and separates.Therefore the preparation method tool of the present invention
The ferric vandate product purity having final gained is high, without the feature of dephasign, can obtain ferric vandate after product is carried out high-temperature calcination, available
Photocatalyst degradable organic pollutant.
Further, the preparation method of a kind of ferric vandate photocatalyst of the present invention, owing to only needing one-step electrolysis to prepare
Going out ferric vandate, therefore its preparation process technique is simple, easily operates, invests little, and synthetic quantity is big, may be directly applied to industry metaplasia
Produce.
Accompanying drawing explanation
The SEM figure of the ferric vandate obtained in Fig. 1, embodiment 1.
The SEM figure of the ferric vandate obtained in Fig. 2, embodiment 2.
The SEM figure of the ferric vandate obtained in Fig. 3, embodiment 3.
The XRD figure of the ferric vandate obtained by Fig. 4, embodiment.
Fig. 5, the ultraviolet catalytic degradation curve of ferric vandate Pyrogentisinic Acid (25mg/L/l).
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the present invention is expanded on further, but it is not limiting as the present invention.
Embodiment 1
The preparation method of a kind of photocatalyst ferric vandate, specifically includes following steps:
(1), with pure iron sheet as anode, with glass-carbon electrode as negative electrode, with 0.1mol/L sodium metavanadate and 1mol/L sodium chloride
Aqueous solution, for anolyte, with 0.1mol/L hydrochloric acid solution as catholyte, in the two-compartment cell that cationic membrane is barrier film,
Controlling to carry out constant-current electrolysis under conditions of temperature is 70 DEG C, electric current density is 10mA/cm2；
(2), be electrolysed after, the cleaning limit, product deionized water limit that obtain on anode is filtered, and after filtering
Filter cake control temperature be 80 DEG C of dry 4h, be dried after naturally cool to room temperature, be dried after under air atmosphere with
The heating rate of 2.5 DEG C/min is warming up to 500 DEG C and carries out high-temperature roasting 1-5h, naturally cools to room temperature, obtain pure after roasting is complete
Clean ferric vandate.
Using Hitachi S-3400N type scanning electron microscope that the ferric vandate of above-mentioned gained is carried out morphology characterization, its SEM schemes
As it is shown in figure 1, from figure 1 it appears that prepared product morphology is spheroidal particle structure, size is 200nm.
Embodiment 2
The preparation method of a kind of ferric vandate photocatalyst, specifically comprises the following steps that
(1), with pure iron sheet as anode, with glass-carbon electrode as negative electrode, with 0.2mol/L sodium metavanadate and 1mol/L sodium chloride
Aqueous solution be anolyte, with 0.2mol/L sodium chloride solution as catholyte, in the two-compartment cell that cationic membrane is barrier film,
Controlling to carry out constant-current electrolysis under conditions of temperature is 50 DEG C, electric current density is 30mA/cm2；
(2), be electrolysed after, the cleaning limit, product deionized water limit that obtain on anode is filtered, and after filtering
Filter cake control temperature be 80 DEG C of dry 4h, be dried after naturally cool to room temperature, be dried after under air atmosphere with 5
DEG C/heating rate of min is warming up to 600 DEG C and carries out high-temperature roasting 3h, naturally cool to room temperature after roasting is complete, obtain pure vanadium
Acid ferrum.
Using Hitachi S-3400N type scanning electron microscope that the ferric vandate of above-mentioned gained is carried out morphology characterization, its SEM schemes
As in figure 2 it is shown, from figure 2 it can be seen that the equal diameter of prepared product morphology is about the micro-nano line structure of 500nm.
Embodiment 3
The preparation method of a kind of photocatalyst ferric vandate, specifically comprises the following steps that
(1), with pure iron sheet as anode, with glass-carbon electrode as negative electrode, with 0.3mol/L sodium metavanadate and 1mol/L sodium chloride
Aqueous solution be anolyte, with 0.3mol/L hydrochloric acid solution as catholyte, in the two-compartment cell that cationic membrane is barrier film, control
System carries out constant-current electrolysis under conditions of temperature is 20 DEG C, and electric current density is 50mA/cm2；
(2), be electrolysed after, the cleaning limit, product deionized water limit that obtain on anode is filtered, and after filtering
Filter cake control temperature be 80 DEG C of dry 4h, be dried after naturally cool to room temperature, be dried after under air atmosphere with 5
DEG C/heating rate of min is warming up to 700 DEG C and carries out high-temperature roasting 2h, naturally cool to room temperature after roasting is complete, obtain pure vanadium
Acid ferrum.
Using Hitachi S-3400N type scanning electron microscope that the ferric vandate of above-mentioned gained is carried out morphology characterization, its SEM schemes
As it is shown on figure 3, from figure 3, it can be seen that there is micro-nano spherical particle and micro-nano club shaped structure in prepared product simultaneously.
It is characterized as FeVO through X-ray diffraction4。
Fig. 5 is the ultraviolet catalytic degradation curve of the ferric vandate Pyrogentisinic Acid (25mg/L/l) that embodiment obtains, and result shows,
Ferric vandate has good photocatalysis performance.
The ferric vandate of above-mentioned gained is carried out by the D8Advance type x-ray diffractometer using Brooker AXS company of Germany
Measure, its XRD figure as shown in Figure 4, figure 4, it is seen that the product obtained is FeVO4, corresponding standard PDF card is
38-1732。
In sum, from sum, the preparation method of a kind of ferric vandate photocatalyst of the present invention, it is electrolysed by control
Liquid concentration, temperature and electric current density；The ferric vandate of different structure and size can be obtained, it is easy to control and can be applicable to fall
Solve phenol.
Claims (9)
1. the preparation method of a ferric vandate photocatalyst, it is characterised in that specifically comprise the following steps that
(1) with pure iron sheet as anode, with inert electrode as negative electrode, with sodium metavanadate and sodium-chloride water solution as anolyte, with salt
Acid solution or sodium chloride solution are catholyte, in the two-compartment cell that cationic membrane is barrier film, use the mode of constant-current electrolysis,
The ferric vandate presoma of different structure and size is prepared by controlling electric current density, concentration of electrolyte and temperature；
(2) after electrolysis terminates, collect the product obtained on anode, clean, filter, be dried, naturally cool to room temperature, then at air
Heat treatment under atmosphere, obtains the ferric vandate photocatalyst that purity is high, cleanliness factor is high.
2. preparation method as claimed in claim 1, it is characterised in that in step (1), sodium metavanadate concentration is 0.1mol/L-
0.3mol/L, sodium chloride concentration is 1-1.5mol/L.
3. preparation method as claimed in claim 1, it is characterised in that in step (1), the concentration of described catholyte is
0.1mol/L-0.3mol/L。
4. preparation method as claimed in claim 1, it is characterised in that in step (1), utilizes water bath with thermostatic control to control the temperature of electrolysis
Degree is for 20-70 DEG C.
5. preparation method as claimed in claim 1, it is characterised in that in step (1), control anodic current density is 10-
50mA/cm2。
6. preparation method as claimed in claim 1, it is characterised in that in step (1), described inert electrode be glass-carbon electrode or
Titanium net.
7. preparation method as claimed in claim 1, it is characterised in that in step (2), baking temperature is 80-100 DEG C, is dried
Time is 4-6h.
8. preparation method as claimed in claim 1, it is characterised in that in step (2), heat treatment process is as follows: air atmosphere
Under be warming up to 500-700 DEG C with the heating rate of 2.5-10 DEG C/min, high-temperature roasting 3-5h.
9. preparation method as claimed in claim 1, it is characterised in that the appearance structure of the ferric vandate photocatalyst obtained is micro-
Nanometer spherical particle and micro-nano line structure.
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| CN109317157A (en) * | 2018-11-26 | 2019-02-12 | 辽宁大学 | A kind of ternary Z-type complex sound catalyst and its preparation method and application for antibiotic waste water of degrading |
| CN111359621A (en) * | 2020-03-09 | 2020-07-03 | 南昌航空大学 | Photocatalytic degradation composite particle and preparation method and application thereof |
| CN111939956A (en) * | 2020-08-14 | 2020-11-17 | 广州大学 | Honeycomb FeV2O4Preparation method and application of composite carbon nitride loaded stainless steel wire mesh composite material |
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