CN104195642A - Method for preparing monocrystal BiFeO3 nanosheets - Google Patents
Method for preparing monocrystal BiFeO3 nanosheets Download PDFInfo
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- CN104195642A CN104195642A CN201410412805.7A CN201410412805A CN104195642A CN 104195642 A CN104195642 A CN 104195642A CN 201410412805 A CN201410412805 A CN 201410412805A CN 104195642 A CN104195642 A CN 104195642A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002135 nanosheet Substances 0.000 title abstract description 5
- 229910002902 BiFeO3 Inorganic materials 0.000 title abstract 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims abstract description 42
- 239000002243 precursor Substances 0.000 claims abstract description 17
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000013019 agitation Methods 0.000 claims description 33
- 230000005291 magnetic effect Effects 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 150000003839 salts Chemical class 0.000 claims description 20
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 18
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000004448 titration Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 abstract description 7
- 239000000047 product Substances 0.000 abstract description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 9
- 238000003756 stirring Methods 0.000 abstract 3
- 239000002244 precipitate Substances 0.000 abstract 2
- 239000012266 salt solution Substances 0.000 abstract 2
- 229910000608 Fe(NO3)3.9H2O Inorganic materials 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 206010013786 Dry skin Diseases 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000011858 nanopowder Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007775 ferroic material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004098 selected area electron diffraction Methods 0.000 description 2
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005621 ferroelectricity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
Classifications
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compounds Of Iron (AREA)
Abstract
The invention discloses a method for preparing monocrystal BiFeO3 nanosheets, which comprises the following steps: dissolving Fe(NO3)3.9H2O and Bi(NO3)3.5H2O in a nitric acid solution to prepare a mother salt solution; dissolving CTAB (cetyltrimethylammonium bromide) in an organic solvent to prepare two CTAB solutions; dropwisely adding the mother salt solution to one CTAB solution, and stirring to obtain a solution A; dropwisely adding a KOH solution to the other CTAB solution, and stirring to obtain a solution B; dropwisely adding the solution B into the solution A, and stirring to obtain a hydrothermal reaction precursor; putting the hydrothermal reaction precursor and a solvent in a hydrothermal kettle; sealing the hydrothermal kettle, reacting in a 140-160-DEG C drying oven for 12-24 hours, and filtering to obtain a precipitate; and washing the precipitate, and drying to obtain the monocrystal BiFeO3 nanosheets. The method can synthesize pure-phase monocrystal BiFeO3 nanosheets at low temperature, and has the advantages of energy saving, high product crystallinity, controllable technique and simple required equipment.
Description
Technical field
The present invention relates to BiFeO
3the preparation method of nano-powder, particularly a kind of monocrystalline BiFeO for preparing
3the method of nanometer sheet.
Background technology
Multi-ferroic material is because it has ferroelectricity simultaneously, ferromegnetism or ferroelasticity, and having a wide range of applications aspect information recording device, spin electric device and sensor.In numerous multi-ferroic materials, BiFeO
3more special, it is that a few that find at present at room temperature possesses one of single-phase multi-ferroic material of ferroelectric order and antiferromagnetic order simultaneously, and its Curie temperature and Neel temperature are higher, are respectively 1103K and 643K, thereby are studied widely in recent years.In addition, due to its energy gap very narrow (～2.1eV), in visible-range, there is good photoresponse, very huge in the using value of photocatalysis field.Yet, the excessive BiFeO that seriously hindered of leakage current causing due to the existence of dephasign
3the application of material.
BiFeO so far
3synthetic method have a lot, mainly contain high temperature solid-phase sintering method and polymeric preceramic body method, the chemical methods such as sol-gel method and coprecipitation method.High temperature solid-state method circulation ratio is not good, and after sintering, needs to wash away Bi with nitric acid
2fe
4o
9and Bi
25feO
40deng dephasign, make synthetic powder surface coarse.And adopt as the chemical methods such as polymeric preceramic body method, coprecipitation method, sol-gel method, microemulsion method still need be at the temperature higher than 400 ℃ sintering, energy consumption is higher, and can cause size distribution inequality and morphology microstructure irregular, finally affect the performance of material.
The catalytic capability of photocatalyst is relevant with its purity, specific surface area, crystallization degree etc.Purity higher (without dephasign), crystallization degree is higher, and specific surface area is larger, and the catalytic capability of photocatalyst is stronger.Nanometer sheet, owing to having large specific surface area, can provide more reaction active site, and can improve the quantum yield that interfacial charge shifts, so have the photocatalyst of nano-sheet pattern, has higher catalytic activity.So far both at home and abroad about preparing monocrystalline BiFeO
3the report of nanometer sheet is few.
Summary of the invention
In order to overcome the above-mentioned shortcoming and deficiency of prior art, the object of the present invention is to provide a kind of monocrystalline BiFeO for preparing
3the method of nanometer sheet can be synthesized pure phase monocrystalline BiFeO at 140 ℃～160 ℃
3nanometer sheet, saves the energy, and monocrystalline BiFeO
3nanometer sheet degree of crystallinity is high, and technique is easily controlled, and synthetic required plant and instrument is simple.
Object of the present invention is achieved through the following technical solutions:
A kind of monocrystalline BiFeO for preparing
3the method of nanometer sheet, comprises the following steps:
(1) 1:1 weighs analytically pure Fe (NO in molar ratio
3)
39H
2o and Bi (NO
3)
35H
2o, and to be dissolved in mass concentration be, in 8～10% salpeter solution, by magnetic agitation, to be made into uniform female salts solution; The concentration of described female salts solution is 0.05～0.15mol/L;
(2) weigh CTAB, and be dissolved in organic solvent, prepare two groups of CTAB solution that concentration is 0.1～0.25mol/L;
(3) female salts solution is added drop-wise in one group of CTAB solution, through magnetic agitation, obtains solution A, female salts solution is 1:5～1:2 with the ratio of the volume of CTAB solution; The KOH solution of 10～30mol/L with female salts solution same volume is added drop-wise in another group CTAB solution, through magnetic agitation, obtains solution B, KOH solution is 1:5～1:2 with the ratio of the volume of CTAB solution;
(4) solution B is added drop-wise in solution A, and is precipitated thing after magnetic agitation, make hydro-thermal reaction precursor;
(5) the hydro-thermal reaction precursor of being prepared by step (4) is put into water heating kettle, and adds solvent, and making water heating kettle compactedness is 70%～80%;
(6) sealing water heating kettle, is placed in water heating kettle in 140 ℃～160 ℃ baking ovens, after reaction 12～24h, takes out the product in water heating kettle, is precipitated after filtration thing; Throw out, through washing, obtains monocrystalline BiFeO after being dried
3nanometer sheet.
The described organic solvent of step (2) is the mixing solutions of hexanaphthene and propyl carbinol.
In the mixing solutions of described hexanaphthene and propyl carbinol, the volume ratio of hexanaphthene and propyl carbinol is 3:1～6:1.
Step (4) is described to be added drop-wise to solution B in solution A, is specially:
Solution B is added drop-wise in solution A to be less than the rate of titration of 5mL/min.
Described dry temperature is 80 ℃.
The described solvent of step (5) is hexanaphthene.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) BiFeO that prepared by the present invention
3powder is monocrystalline BiFeO
3nanometer sheet, complete crystallization, crystalline phase is single.Due to monocrystalline BiFeO
3nanometer sheet has the characteristic that specific surface area is large, can be used as the photocatalyst of degradation of contaminant under visible ray, in addition, can also be used to make well behaved information recording device, spin electric device and sensor.
(2) the monocrystalline BiFeO for preparing of the present invention
3the method of nanometer sheet, preparation temperature is 140 ℃～160 ℃, and existing solid sintering technology and polymeric preceramic body method, and sol-gel method is compared with chemical methods such as coprecipitation methods, and temperature greatly reduces, and has saved the energy.
(3) the monocrystalline BiFeO for preparing of the present invention
3the method of nanometer sheet, reaction product does not need to process through follow-up sintering, and technology controlling and process and synthetic required plant and instrument are simple, have further reduced production cost.
(4) the monocrystalline BiFeO for preparing of the present invention
3the method of nanometer sheet, the reactant precursor solution preparing needn't filter, washs and be dried, and has further shortened technique preparation cycle.
(5) the monocrystalline BiFeO for preparing of the present invention
3the method of nanometer sheet, raw material configures in liquid phase, and the even mixing on molecule/atomic level can accurately be controlled and realize to the content of each component, the monocrystalline BiFeO of preparation
3nanometer sheet has the advantages such as purity height and good dispersity.
Accompanying drawing explanation
Fig. 1 is the prepared monocrystalline BiFeO of embodiments of the invention 1
3the preparation flow figure of nanometer sheet.
Fig. 2 is the prepared monocrystalline BiFeO of embodiments of the invention 1
3the x ray diffraction collection of illustrative plates of nanometer sheet
Fig. 3 is the prepared monocrystalline BiFeO of embodiments of the invention 1
3the transmission electron microscope photo of nanometer sheet.
Fig. 4 is the prepared monocrystalline BiFeO of embodiments of the invention 1
3the high-resolution-ration transmission electric-lens photo of nanometer sheet.
Fig. 5 is the prepared monocrystalline BiFeO of embodiments of the invention 1
3the transmission electron microscope selected area electron diffraction style of nanometer sheet.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figure 1, the BiFeO of the present embodiment
3nanometer sheet preparation process comprises the following steps:
Weigh the analytically pure Fe (NO of 1mmol
3)
39H
2o and 1mmol Bi (NO
3)
35H
2o, and be dissolved in the salpeter solution that the mass concentration of 10ml is 8%, by magnetic agitation 0.5h, be made into uniform female salts solution; Prepare two groups of CTAB solution that concentration is identical, the process for preparation of every group of CTAB solution is as follows: weigh 1gCTAB, and be dissolved in the mixing solutions of 20ml hexanaphthene and 4ml propyl carbinol, by magnetic agitation 0.5h, obtain CTAB solution; Female salts solution is added drop-wise in one group of CTAB solution, and magnetic agitation 0.5h obtains solution A; The KOH solution of the 10mol/L of 10ml is added drop-wise in another group CTAB solution, and magnetic agitation 0.5h obtains solution B; By solution B, the rate of titration with 4.5mL/min is added drop-wise in solution A again, and magnetic agitation 0.5h makes hydro-thermal reaction precursor; Above-mentioned hydro-thermal reaction precursor is put into water heating kettle, and add hexanaphthene, making compactedness is 80%.Sealing water heating kettle, is placed in water heating kettle in 140 ℃ of baking ovens, after reaction 16h, takes out the product in water heating kettle, obtains after filtration throw out, then through washing, at the baking oven inner dryings of 80 ℃, obtains monocrystalline BiFeO
3nanometer sheet.
Fig. 2 is BiFeO prepared by the present embodiment
3the x ray diffraction collection of illustrative plates of nano-powder, as shown in Figure 2, pure phase BiFeO prepared by the present embodiment
3nano-powder degree of crystallinity is high.
Fig. 3 is BiFeO prepared by the present embodiment
3the transmission electron microscope picture of nano-powder, as shown in Figure 3, BiFeO prepared by the present embodiment
3powder is rectangular nanometer sheet, and its marginal dimension is (70～130) nm * (90～200) nm.
Fig. 4 is the prepared BiFeO of embodiments of the invention 1
3the high-resolution-ration transmission electric-lens photo of nanometer sheet, as shown in the figure, its spacing is 0.39nm, corresponding to BiFeO
3(012) crystal face.
Fig. 5 is the prepared BiFeO of embodiments of the invention 1
3the transmission electron microscope selected area electron diffraction style of nanometer sheet, as seen from the figure, BiFeO
3nanometer sheet is monocrystalline.
Embodiment 2
Weigh the analytically pure Fe (NO of 1mmol
3)
39H
2o and 1mmol Bi (NO
3)
35H
2o, and be dissolved in 9% the salpeter solution of 8ml, by magnetic agitation 0.5h, be made into uniform female salts solution; Prepare two groups of CTAB solution that concentration is identical, the process for preparation of every group of CTAB solution is as follows: weigh 1.5gCTAB, and be dissolved in the mixing solutions of 20ml hexanaphthene and 4ml propyl carbinol, by magnetic agitation 0.5h, obtain CTAB solution; Female salts solution is added drop-wise in one group of CTAB solution, and magnetic agitation 0.5h obtains solution A; The KOH solution of the 10mol/L of 8ml is added drop-wise in another group CTAB solution, and magnetic agitation 0.5h obtains solution B; By solution B, the rate of titration with 4mL/min is added drop-wise in solution A again, and magnetic agitation 0.5h makes hydro-thermal reaction precursor; Above-mentioned hydro-thermal reaction precursor is put into water heating kettle, and add hexanaphthene, making compactedness is 70%.Sealing water heating kettle, water heating kettle is placed in 140 ℃ of baking ovens, after reaction 12h, takes out the product in water heating kettle, obtain after filtration throw out, through washing, at the baking oven inner dryings of 80 ℃, obtain its marginal dimension for the monocrystalline BiFeO of (80～130) nm * (80～200) nm again
3nanometer sheet.
Embodiment 3
Weigh the analytically pure Fe (NO of 1mmol
3)
39H
2o and 1mmol Bi (NO
3)
35H
2o, and be dissolved in 9% the salpeter solution of 10ml, by magnetic agitation 0.5h, be made into uniform female salts solution; Prepare two groups of CTAB solution that concentration is identical, the process for preparation of every group of CTAB solution is as follows: weigh 2gCTAB, and be dissolved in the mixing solutions of 24ml hexanaphthene and 4ml propyl carbinol, by magnetic agitation 0.5h, obtain CTAB solution; Female salts solution is added drop-wise in one group of CTAB solution, and magnetic agitation 0.5h obtains solution A; The KOH solution of the 10mol/L of 10ml is added drop-wise in another group CTAB solution, and magnetic agitation 0.5h obtains solution B; By solution B, the rate of titration with 4mL/min is added drop-wise in solution A again, and magnetic agitation 0.5h makes hydro-thermal reaction precursor; Above-mentioned hydro-thermal reaction precursor is put into water heating kettle, and add hexanaphthene, making compactedness is 80%.Sealing water heating kettle, water heating kettle is placed in 160 ℃ of baking ovens, after reaction 24h, takes out the product in water heating kettle, obtain after filtration throw out, through washing, at the baking oven inner dryings of 80 ℃, obtain marginal dimension for the monocrystalline BiFeO of (60～120) nm * (80～160) nm again
3nanometer sheet.
Embodiment 4
Weigh the analytically pure Fe (NO of 1mmol
3)
39H
2o and 1mmol Bi (NO
3)
35H
2o, and be dissolved in 10% the salpeter solution of 8ml, by magnetic agitation 0.5h, be made into uniform female salts solution; Prepare two groups of CTAB solution that concentration is identical, the process for preparation of every group of CTAB solution is as follows: weigh 1.5gCTAB, and be dissolved in the mixing solutions of 22.5ml hexanaphthene and 4.5ml propyl carbinol, by magnetic agitation 0.5h, obtain CTAB solution; Female salts solution is added drop-wise in one group of CTAB solution, and magnetic agitation 0.5h obtains solution A; The KOH solution of the 20mol/L of 8ml is added drop-wise in another group CTAB solution, and magnetic agitation 0.5h obtains solution B; By solution B, the rate of titration with 4.5mL/min is added drop-wise in solution A again, and magnetic agitation 0.5h makes hydro-thermal reaction precursor; Above-mentioned hydro-thermal reaction precursor is put into water heating kettle, and add hexanaphthene, making compactedness is 75%.Sealing water heating kettle, water heating kettle is placed in 140 ℃ of baking ovens, after reaction 16h, takes out the product in water heating kettle, obtain after filtration throw out, through washing, at the baking oven inner dryings of 80 ℃, obtain its marginal dimension for the monocrystalline BiFeO of (80～140) nm * (80～180) nm again
3nanometer sheet.
Embodiment 5
Weigh the analytically pure Fe (NO of 1mmol
3)
39H
2o and 1mmol Bi (NO
3)
35H
2o, and be dissolved in 10% the salpeter solution of 8ml, by magnetic agitation 0.5h, be made into uniform female salts solution; Prepare two groups of CTAB solution that concentration is identical, the process for preparation of every group of CTAB solution is as follows: weigh 1gCTAB, and be dissolved in the mixing solutions of 20ml hexanaphthene and 4ml propyl carbinol, by magnetic agitation 0.5h, obtain CTAB solution; Female salts solution is added drop-wise in one group of CTAB solution, and magnetic agitation 0.5h obtains solution A; The KOH solution of the 30mol/L of 8ml is added drop-wise in another group CTAB solution, and magnetic agitation 0.5h obtains solution B; By solution B, the rate of titration with 4.5mL/min is added drop-wise in solution A again, and magnetic agitation 0.5h makes hydro-thermal reaction precursor; Above-mentioned hydro-thermal reaction precursor is put into water heating kettle, and add hexanaphthene, making compactedness is 70%.Sealing water heating kettle, water heating kettle is placed in 150 ℃ of baking ovens, after reaction 16h, takes out the product in water heating kettle, obtain after filtration throw out, through washing, at the baking oven inner dryings of 80 ℃, obtain its marginal dimension for the monocrystalline BiFeO of (70～120) nm * (80～190) nm again
3nanometer sheet.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (6)
1. prepare monocrystalline BiFeO for one kind
3the method of nanometer sheet, is characterized in that, comprises the following steps:
(1) 1:1 weighs analytically pure Fe (NO in molar ratio
3)
39H
2o and Bi (NO
3)
35H
2o, and to be dissolved in mass concentration be, in 8～10% salpeter solution, by magnetic agitation, to be made into uniform female salts solution; The concentration of described female salts solution is 0.05～0.15mol/L;
(2) weigh CTAB, and be dissolved in organic solvent, prepare two groups of CTAB solution that concentration is 0.1～0.25mol/L;
(3) female salts solution is added drop-wise in one group of CTAB solution, through magnetic agitation, obtains solution A, female salts solution is 1:5～1:2 with the ratio of the volume of CTAB solution; The KOH solution of 10～30mol/L with female salts solution same volume is added drop-wise in another group CTAB solution, through magnetic agitation, obtains solution B, KOH solution is 1:5～1:2 with the ratio of the volume of CTAB solution;
(4) solution B is added drop-wise in solution A, and is precipitated thing after magnetic agitation, make hydro-thermal reaction precursor;
(5) the hydro-thermal reaction precursor of being prepared by step (4) is put into water heating kettle, and adds solvent, and making water heating kettle compactedness is 70%～80%;
(6) sealing water heating kettle, is placed in water heating kettle in 140 ℃～160 ℃ baking ovens, after reaction 12～24h, takes out the product in water heating kettle, is precipitated after filtration thing; Throw out, through washing, obtains monocrystalline BiFeO after being dried
3nanometer sheet.
2. the monocrystalline BiFeO for preparing according to claim 1
3the method of nanometer sheet, is characterized in that, the described organic solvent of step (2) is the mixing solutions of hexanaphthene and propyl carbinol.
3. the monocrystalline BiFeO for preparing according to claim 2
3the method of nanometer sheet, is characterized in that, in the mixing solutions of described hexanaphthene and propyl carbinol, the volume ratio of hexanaphthene and propyl carbinol is 3:1～6:1.
4. the monocrystalline BiFeO for preparing according to claim 1
3the method of nanometer sheet, is characterized in that, step (4) is described to be added drop-wise to solution B in solution A, is specially:
Solution B is added drop-wise in solution A to be less than the rate of titration of 5mL/min.
5. the monocrystalline BiFeO for preparing according to claim 1
3the method of nanometer sheet, is characterized in that, described dry temperature is 80 ℃.
6. the monocrystalline BiFeO for preparing according to claim 1
3the method of nanometer sheet, is characterized in that, the described solvent of step (5) is hexanaphthene.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129861A (en) * | 2015-08-27 | 2015-12-09 | 华南理工大学 | Preparation method for bismuth ferrite BiFeO3 nanosheet |
| CN106140177A (en) * | 2015-03-16 | 2016-11-23 | 中智环保新材料江苏有限公司 | A kind of superstructure visible light responsive BiFeO3the preparation method and application of photocatalyst |
| CN109626440A (en) * | 2019-01-17 | 2019-04-16 | 天津城建大学 | BiFeO is prepared based on hydro-thermal method3The method and BiFeO of nanometer sheet3Nanometer sheet |
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