CN105772003A - Rapid synthesis method of single-phase bismuth ferrite visible-light-driven photocatalyst - Google Patents
Rapid synthesis method of single-phase bismuth ferrite visible-light-driven photocatalyst Download PDFInfo
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- CN105772003A CN105772003A CN201610230594.4A CN201610230594A CN105772003A CN 105772003 A CN105772003 A CN 105772003A CN 201610230594 A CN201610230594 A CN 201610230594A CN 105772003 A CN105772003 A CN 105772003A
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 37
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 35
- 238000001308 synthesis method Methods 0.000 title claims abstract description 6
- 239000011941 photocatalyst Substances 0.000 title abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 13
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 27
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- 239000002243 precursor Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000002360 preparation method Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000003786 synthesis reaction Methods 0.000 abstract description 6
- 239000011259 mixed solution Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract 2
- 239000012190 activator Substances 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 5
- 229910002902 BiFeO3 Inorganic materials 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- 229910002897 Bi2Fe4O9 Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 238000011481 absorbance measurement Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—Bismuth
-
- B01J35/39—
Abstract
The invention discloses a synthesis method for rapidly preparing a photocatalyst bismuth ferrite pure phase capable of being applied to visible light catalysis degradation of organic matter in wastewater.A microwave hydrothermal method is adopted to rapidly synthesize single-phase bismuth ferrite, analytically-pure ferric nitrate, bismuth nitrate and potassium hydroxide serve as raw materials, and ferric nitrate and bismuth nitrate are weighed according to the stoichiometric ratio of 1:1 and dissolved in deionized water; then, 7 mol/L potassium hydroxide is slowly dripped, and 60-80 mL of the mixed solution is put into a reaction kettle for a microwave hydrothermal reaction; finally, dispersed single-phase bismuth ferrite powder is obtained.By means of the rapid synthesis method of the single-phase bismuth ferrite visible-light-driven photocatalyst, single-phase bismuth ferrite can be obtained within the shortest time (65 min), and thus the time of preparing bismuth ferrite is greatly shortened; besides, no organic dispersant or activator is added in the synthesis process, secondary pollution is avoided, and the dispersity of synthesized bismuth ferrite is good.The preparation method is efficient and rapid in synthesis, and a key new photocatalyst material is provided for visible light catalysis degradation of organic pollutants in wastewater.
Description
Technical field
The invention belongs to engineering material field, relate to the quickly side of preparation of a kind of many ferrimagnets photocatalyst
Method, is specially the bismuth ferrite visible light catalyst powder body using microwave-hydrothermal method quickly to prepare pure phase.
Background technology
Bismuth ferrite (BiFeO3) it is a kind of to there are magnetic and many ferrimagnets of electricdomain and by people because of it the earliest
Know.In recent years, owing to the energy gap of bismuth ferrite is less, can effectively utilize visible ray to realize light and urge
Changing reaction and photovoltaic effect, another causes the extensive concern of people.The energy gap that bismuth ferrite is less makes it
Can effectively utilize the visible ray accounting for sunlight 48%.It addition, bismuth ferrite also has self poling field, this makes it
There is many unique performances.Such as: the existence of self poling field probably reduces photo-generate electron-hole pair
It is combined thus improves the efficiency of light-catalyzed reaction.The most also a lot of report bismuth ferrites is had effectively to apply
Organic pollutant in degradation water or photocatalysis hydrolysis hydrogen making.Therefore, research has visible ray and urges
Change the Fast back-projection algorithm of the bismuth ferrite material of activity, current renewable new energy development and ecological environmental protection are had
Important theory and practice meaning.
It is known that it is the most difficult to prepare single-phase bismuth ferrite.The preparation process of bismuth ferrite is easy to produce
Such as Bi25FeO40、Bi2Fe4O9、BiFeO3Etc. multiple different ferrum, bismuth, the compound of oxygen composition, dephasign
Existence can affect BiFeO3Photocatalysis property, also to BiFeO3Intrinsic Quality Research produces impact.These
It is primarily due to, only exists within the scope of narrower temperature, simultaneously according to the bismuth ferrite of phasor single-phase composition
The stoichiometric proportion of the fusing point local caused low, readily volatilized that iron ion is very easy to appraise at the current rate with bismuth oxide is lost
Weighing apparatus.People used many different methods to prepare the bismuth ferrite of different-shape, size in the last few years.Such as:
The additive methods such as sol-gel process, hydro-thermal method, fast performance liquid sintering process and burning.But, the above system
All there is various problem in Preparation Method, such as: length reaction time that hydrothermal synthesis method prepares bismuth ferrite is (logical
Often need 3 days to 1 week), process is wayward, and the bismuth ferrite synthesized is generally of significantly
Agglomeration；Although sol-gal process have prepare material uniformly, constituent with the advantage such as easy to control, but
It is that this method synthesis temperature is higher, course of reaction easily occurs dephasign, and repeatability is the most bad.
Accordingly, it would be desirable to the synthetic method of the single-phase bismuth ferrite of a kind of improvement.
Summary of the invention
It is an object of the present invention to provide the fast synthesis method of a kind of single-phase bismuth ferrite visible light catalyst.
The preparation process of the single-phase bismuth ferrite visible light catalyst of the present invention includes:
1) precursor aqueous solution is prepared: five water bismuth nitrate and nine water ferric nitrates are dissolved according to the stoichiometric proportion of 1: 1
In 30-40mL deionized water, stirring is allowed to fully dissolve；By the potassium hydroxide solution 30-40 of 5-10 mol/L
ML is slowly dropped in the solution of ferric nitrate and bismuth nitrate, is sufficiently stirred for, and obtains brown precursor solution.
2) microwave attenuation materials: after being at room temperature sufficiently stirred for by precursor solution, turns 60-80mL solution
Move on in the microwave hydrothermal reaction kettle of 100mL, sealed reactor, and reactor is placed in microwave reaction instrument,
In 15 minutes, temperature is raised to 200 degrees Celsius from room temperature, held for some time afterwards so that it is reaction.
3) cooling: after microwave reaction EP (end of program), reactor cools down with room temperature.
4) clean and be dried: taking out the sample in microwave hydrothermal reaction kettle, use deionized water sucking filtration, repeatedly clean,
Then dry in the air dry oven of 60 degrees Celsius, i.e. obtain bismuth ferrite powder.
Beneficial effects of the present invention: the synthetic method reaction temperature of the present invention is low, shortens the response time greatly,
The most only needing 65 minutes, synthesis material does not simply result in secondary environmental pollution, and operating procedure is succinct, repeats
Property preferably and course of reaction is without adding the synthesis technique of any organic reactant, the single-phase ferrous acid obtained
Bismuth meal body good dispersion, it is possible to methyl orange of effectively degrading, has good industrial prospect.
Accompanying drawing explanation
Fig. 1 is the XRD figure of the bismuth ferrite powder of preparation under the differential responses time.
Fig. 2 be the response time be bismuth ferrite powder prepared by 65min SEM figure.
Fig. 3 is to be the uv-visible absorption spectra of bismuth ferrite powder prepared by 65min in the response time.
Fig. 4 is with synthesis bismuth ferrite as photocatalyst, it is seen that photo-catalytic degradation of methyl-orange procedure chart.
Detailed description of the invention
Embodiment 1:
By the Bi (NO of 10mmol3)3·5H2Fe (the NO of O 4.85g and 10mmol3)3·9H2O 4.04g is dissolved in
In the deionized water of 30mL.Then the KOH solution of 40mL 7M slowly (about 20min) is added dropwise to
Mixed solution before, makes Bi3+And Fe3+Precipitate completely.After dripping, stirring makes solution be sufficiently mixed.Will be mixed
Compound (solution 70mL altogether) adds 100mL microwave hydrothermal reaction kettle.Microwave hydrothermal reaction kettle is positioned over
Microwave reaction instrument naturally cools to room temperature after 200 DEG C of reaction 30min, finally by reacted solution sucking filtration,
Clean with deionized water and remove unreacted ion for several times, in 60 DEG C of oven for drying.
Embodiment 2:
By the Bi (NO of 10mmol3)3·5H2Fe (the NO of O 4.85g and 10mmol3)3·9H2O 4.04g is dissolved in
In the deionized water of 30mL.Then the KOH solution of 40mL 7M concentration is slowly added dropwise into (～20min)
Mixed solution before, makes Bi3+And Fe3+Precipitate completely.After dripping, stirring makes solution be sufficiently mixed.Will be mixed
Compound (solution 70mL altogether) adds 100mL microwave hydrothermal reaction kettle.Microwave hydrothermal reaction kettle is positioned over
Microwave reaction instrument naturally cools to room temperature after 200 DEG C of reaction 60min, finally by reacted solution sucking filtration,
Clean with deionized water and remove unreacted ion for several times, in 60 DEG C of oven for drying.
Embodiment 3:
By the Bi (NO of 10mmol3)3·5H2Fe (the NO of O 4.85g and 10mmol3)3·9H2O 4.04g is dissolved in
In the deionized water of 40mL.Then by slowly (～20min) dropping of the KOH solution of 30mL 7M concentration
Mixed solution before entering, makes Bi3+And Fe3+Precipitate completely.After dripping, stirring makes solution be sufficiently mixed.Will
Mixture (solution 70mL altogether) adds 100mL microwave hydrothermal reaction kettle.Microwave hydrothermal reaction kettle is placed
In microwave reaction instrument, naturally cool to room temperature after 200 DEG C of reaction 60min, finally reacted solution is taken out
Filter, cleans with deionized water and removes unreacted ion for several times, in 60 DEG C of oven for drying.
Embodiment 4:
By the Bi (NO of 10mmol3)3·5H2Fe (the NO of O 4.85g and 10mmol3)3·9H2O 4.04g is dissolved in
In the deionized water of 30mL.Then the KOH solution (about 20min) of 40mL 7M concentration is slowly dripped
Mixed solution before addition, makes Bi3+And Fe3+Precipitate completely.After dripping, stirring makes solution be sufficiently mixed.
Mixture (solution 70mL altogether) is added 100mL microwave hydrothermal reaction kettle.Microwave hydrothermal reaction kettle is put
It is placed in microwave reaction instrument and naturally cools to room temperature, finally by reacted solution after 200 DEG C of reaction 65min
Sucking filtration, cleans with deionized water and removes unreacted ion for several times, in 60 DEG C of oven for drying.
Embodiment 5:
Use the xenon lamp equipped with 420nm optical filter of 300W as simulated solar radiant, light source and reaction
Distance between liquid level is 15cm.It is 5mg L by 100mL concentration-1MO solution be loaded on one and can lead to
Enter to cool down in the glass drying oven of water, then 0.3g catalyst is added in glass drying oven.Before illumination, will reaction
Solution stirs 1h to reach adsorption equilibrium in the environment of being placed in dark.Determine certain time interval, take every time
Go out the reaction solution of 4mL, 9000rpm min-1Catalyst granules is removed by centrifugal 20min, takes upper strata
Supernatant liquid ultraviolet-visible light analysis of spectrum, the absorbance measurement methyl orange concentration gone out at 464nm according to sample
Change.
As it is shown in figure 1, show through X-ray powder diffraction test, the response time was obtained by 30 and 60 minutes
The sample obtained is the mixture containing other dephasigns；And the diffraction pattern of the sample that the response time is 65 minutes with
Pure bismuth ferrite is consistent, and the diffraction maximum of other materials does not occur.As shown in Figure 2,3, prepared
Bismuth ferrite dispersion preferably, and has significantly absorption in visible region, can use as visible light catalyst
Visible light photocatalytic degradation in Organic substance in water.As shown in Figure 4, with the bismuth ferrite material prepared by the present invention
For photocatalyst, carry out the visible light photocatalytic degradation of methyl orange, it can be seen that methyl orange solution color is with reaction
Substantially shoal to colourless.The material preparation of the present invention is to use microwave-hydrothermal method, and it is simple to operate, anti-
Should rapidly, combined coefficient is higher, product purity is the highest, reproducible and manufacturing cost is cheap, be suitable for expand
The requirement that big metaplasia is produced；Material thermal resistance prepared by the present invention is good, and acid, aqueous slkali the most stable；
Material prepared by the present invention has preferable visible light photocatalytic degradation Organic substance effect, can be water pollutant
Visible light photocatalytic degradation administer provide catalyst material.
Claims (1)
1. the fast synthesis method of a single-phase bismuth ferrite visible light catalyst, it is characterised in that comprise the steps:
1) precursor aqueous solution is prepared: five water bismuth nitrate and nine water ferric nitrates are dissolved according to the stoichiometric proportion of 1: 1
In 30-40mL deionized water, stirring is allowed to fully dissolve；By the potassium hydroxide solution 30-40 of 5-8 mol/L
ML is slowly dropped in the solution of ferric nitrate and bismuth nitrate, is sufficiently stirred for, and obtains brown precursor solution；
2) microwave attenuation materials: after being at room temperature sufficiently stirred for by precursor solution, transfers to 60-80mL solution
In the microwave hydrothermal reaction kettle of 100mL, sealed reactor, and reactor is placed in microwave reaction instrument,
From room temperature to 200 degree Celsius in 15min, held for some time afterwards so that it is reaction；
3) cooling: after microwave reaction EP (end of program), reactor cools down with room temperature；
4) clean and be dried: taking out the sample in microwave hydrothermal reaction kettle, sucking filtration, repeatedly clean with deionized water,
Then dry in the air dry oven of 60 degrees Celsius, i.e. obtain bismuth ferrite powder.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745299A (en) * | 2016-12-12 | 2017-05-31 | 东北大学秦皇岛分校 | A kind of pure phase bismuth ferric raw powder's production technology |
| CN107649141A (en) * | 2017-09-28 | 2018-02-02 | 上海应用技术大学 | Neodymium, nickel are co-doped with the preparation method of bismuth ferrite photocatalyst and its composite catalyst |
| CN108786827A (en) * | 2018-07-12 | 2018-11-13 | 辽宁大学 | A kind of compound double Z shaped photochemical catalyst BiFeO3/CuBi2O4/BaTiO3And its preparation method and application |
| CN110316763A (en) * | 2019-08-15 | 2019-10-11 | 济南大学 | A kind of preparation method of even compact BiFeO3 spindle nano particle |
| CN111774062A (en) * | 2020-06-04 | 2020-10-16 | 东南大学 | BiFeO3Preparation method of particle-carbon fiber composite catalyst |
| CN112408491A (en) * | 2020-11-18 | 2021-02-26 | 南京工程学院 | Method for rapidly preparing ultrathin epitaxial bismuth ferrite film based on microwave hydrothermal method |
| CN112774686A (en) * | 2021-01-31 | 2021-05-11 | 湖南科技大学 | Bismuth ferrite/sepiolite composite visible-light-driven photocatalyst and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745299A (en) * | 2016-12-12 | 2017-05-31 | 东北大学秦皇岛分校 | A kind of pure phase bismuth ferric raw powder's production technology |
| CN107649141A (en) * | 2017-09-28 | 2018-02-02 | 上海应用技术大学 | Neodymium, nickel are co-doped with the preparation method of bismuth ferrite photocatalyst and its composite catalyst |
| CN108786827A (en) * | 2018-07-12 | 2018-11-13 | 辽宁大学 | A kind of compound double Z shaped photochemical catalyst BiFeO3/CuBi2O4/BaTiO3And its preparation method and application |
| CN108786827B (en) * | 2018-07-12 | 2021-04-13 | 辽宁大学 | Composite double-Z type photocatalyst BiFeO3/CuBi2O4/BaTiO3And preparation method and application thereof |
| CN110316763A (en) * | 2019-08-15 | 2019-10-11 | 济南大学 | A kind of preparation method of even compact BiFeO3 spindle nano particle |
| CN111774062A (en) * | 2020-06-04 | 2020-10-16 | 东南大学 | BiFeO3Preparation method of particle-carbon fiber composite catalyst |
| CN112408491A (en) * | 2020-11-18 | 2021-02-26 | 南京工程学院 | Method for rapidly preparing ultrathin epitaxial bismuth ferrite film based on microwave hydrothermal method |
| CN112408491B (en) * | 2020-11-18 | 2022-05-24 | 南京工程学院 | Method for rapidly preparing ultrathin epitaxial bismuth ferrite film based on microwave hydrothermal method |
| CN112774686A (en) * | 2021-01-31 | 2021-05-11 | 湖南科技大学 | Bismuth ferrite/sepiolite composite visible-light-driven photocatalyst and preparation method thereof |
| CN112774686B (en) * | 2021-01-31 | 2023-10-20 | 湖南科技大学 | Bismuth ferrite/sepiolite composite visible light catalyst and preparation method thereof |
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