CN107376899A - The method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material - Google Patents
The method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material Download PDFInfo
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 59
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 59
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 21
- 238000001027 hydrothermal synthesis Methods 0.000 title claims abstract description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 239000002135 nanosheet Substances 0.000 claims abstract description 31
- 229960003431 cetrimonium Drugs 0.000 claims abstract description 23
- RLGQACBPNDBWTB-UHFFFAOYSA-N cetyltrimethylammonium ion Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)C RLGQACBPNDBWTB-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 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 abstract description 19
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical class [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 19
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 19
- 239000011734 sodium Substances 0.000 claims abstract description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 16
- 239000003643 water by type Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010189 synthetic method Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 13
- 239000003054 catalyst Substances 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910002915 BiVO4 Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003911 water pollution 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
- B01J23/16—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
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/31—Chromium, molybdenum or tungsten combined with bismuth
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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—
-
- B01J35/39—
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of method of one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material, 16.5 165mg sodium tungstates and 2.5 25mg cetrimonium bronmides are added in 40mL deionized waters, salpeter solution or hydrochloric acid solution, stirring obtains solution A to after being completely dissolved；The water bismuth nitrates of 3.61 361mg five are added in solution A and are uniformly mixed to obtain solution B；It is placed in by solution B or after sodium hydroxide solution will be added in solution B in autoclave, it is put into after autoclave is sealed again in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, room temperature is naturally cooled to, the bismuth tungstate two dimension catalysis material of different sizes and structure is centrifuged, be dried to obtain after product is taken out.For the present invention using simple step hydro-thermal reaction synthesis size and the two-dimentional Bismuth tungstate nano-sheet of structure-controllable, synthetic method is simple to operate, raw material is green, cost is cheap, product short preparation period, reproducible, is easy to promote.
Description
Technical field
The invention belongs to the synthesis technical field of inorganic two-dimentional catalysis material, and in particular to a kind of one step hydro thermal method synthesis
The method of different-shape bismuth tungstate two dimension catalysis material.
Background technology
With the fast development of industry, life influence of the incident environmental problem for the common people is increasing, such as water
The pollutants such as organic matter, heavy metal, aromatics in body are brought for food security to be had a strong impact on.Therefore, for water pollution
Improvement be the important research topic currently faced.Bismuth based material, such as Bi2WO6、BiVO4、Bi2O2CO3, a variety of materials such as BiOCl
Expect for photocatalytic pollutant degradation, realize the improvement to environment using solar energy, have for solving problem of environmental pollution
Far-reaching theory and practice meaning.Bi2WO6It is narrow gap semiconductor（About 2.7eV）, some visible light can be absorbed, is extensive
The visible light-responded photocatalyst material of application, is widely used in all kinds of dirts such as photocatalytically degradating organic dye, medicine, heavy metal
Contaminate thing.
In recent years, many chemists have synthesized the Bi with different nanostructureds2WO6Photochemical catalyst simultaneously is used to degrade
Various environmental contaminants.During photocatalytic pollutant degradation, photochemical catalyst is produced light induced electron and light by sunlight irradiation
Raw hole, the wherein transmission of photo-generate electron-hole pair and separative efficiency, and the effective ratio area of photochemical catalyst is limitation light
The major reason of catalytic efficiency.Two-dimensional ultrathin nanometer chip architecture can expose more surface atoms as photochemical catalyst, can
Improve the utilization ratio of atom.In addition, the thickness by controlling two-dimensional nano piece, can regulate and control photochemical catalyst band structure and
Electrology characteristic, improve transmission and the separative efficiency of photogenerated charge.To sum up, two-dimension nano materials have uniqueness as photochemical catalyst
Advantage, be advantageous to improve its photocatalysis performance.
Publication No. CN105457626A patent discloses a kind of preparation method of concave surface nanometer sheet, although it passes through
It is modified to obtain higher photocatalysis performance, but its preparation process is complicated, and reaction temperature is too high, and has used organic solvent, unfavorable
Promote and use in a wide range of.Document（[1] Chemsuschem, 2013, 6(10):1873-1877, [2]
Cheminform, 2015, 46(31):2560-2564）Report and utilize hydro-thermal method synthesis Bi2WO6The method of nanometer sheet, but text
Offer（1）Preparation process it is relative complex, and reaction temperature is higher, and the time is longer, document（2）The nanometer sheet of preparation is thicker, influences
The migration of electron hole, and then photocatalysis performance is have impact on, and the present invention utilizes one step hydro thermal method, is successfully prepared size and knot
The adjustable two-dimentional Bismuth tungstate nano-sheet of structure, preparation method is simple, and new thinking is provided for synthesis bismuth tungstate two dimension catalysis material.
The content of the invention
Urged present invention solves the technical problem that there is provided a kind of one step hydro thermal method synthesis different-shape bismuth tungstate two dimension light
Change the method for material, this method is by controlling synthesis condition to synthesize the two-dimentional Bismuth tungstate nano-sheet of different-shape.
The present invention adopts the following technical scheme that one step hydro thermal method synthesizes different-shape bismuth tungstate to solve above-mentioned technical problem
The method of two-dimentional catalysis material, it is characterised in that concretely comprise the following steps：
（1）16.5-165mg sodium tungstates and 2.5-25mg cetrimonium bronmides are added to 40mL deionized waters, nitric acid
In solution or hydrochloric acid solution, stirring obtains solution A to after being completely dissolved, and wherein sodium tungstate and cetrimonium bronmide rubs
You are than being 5:1；
（2）The water bismuth nitrates of 3.61-361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）It is placed in by solution B or after sodium hydroxide solution will be added in solution B in autoclave, then by autoclave
Be put into after sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cool to room temperature, after product is taken out from
Heart separation, the bismuth tungstate two dimension catalysis material for being dried to obtain different sizes and structure.
Further preferably, step（1）Described in the molar concentration of salpeter solution be 2mol/L, the molar concentration of hydrochloric acid solution
For 2mol/L.
Further preferably, step（3）Described in the molar concentration of sodium hydroxide solution be 2mol/L, sodium hydroxide solution
Addition is 200-600 μ L.
The method of one step hydro thermal method controlledly synthesis different-shape bismuth tungstate two dimension catalysis material, it is characterised in that specific step
Suddenly it is：
（1）16.5-165mg sodium tungstates and 2.5-25mg cetrimonium bronmides are added in 40mL deionized waters, stirred
Mix to after being completely dissolved and obtain solution A, wherein the mol ratio of sodium tungstate and cetrimonium bronmide is 5:1；
（2）The water bismuth nitrates of 36.1-361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain two-dimentional bismuth tungstate nanometer
Piece, as the gradual reduction of predecessor concentration, the thickness of two-dimentional Bismuth tungstate nano-sheet gradually reduce in building-up process, and two dimension
The structure of Bismuth tungstate nano-sheet gradually becomes class quadrangle by class ellipse.
The method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material, it is characterised in that specific steps
For：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirred to completely molten
Solution A is obtained after solution；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）It is placed in after 200-600 μ L 2mol/L sodium hydroxide solution will be added in solution B in autoclave, then by high pressure
It is put into after reactor sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cools to room temperature, product is taken
Centrifuged after going out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet, with the increase of sodium hydroxide solution addition in building-up process,
The thickness of two-dimentional Bismuth tungstate nano-sheet gradually reduces, and cross one another phenomenon gradually decreases.
The method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material, it is characterised in that specific steps
For：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L hydrochloric acid solutions, stirred
Solution A is obtained to after being completely dissolved；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain class rectangular parallelepiped structure two dimension
Bismuth tungstate nano-sheet.
The method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material, it is characterised in that specific steps
For：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L salpeter solution, stirred
Mix and obtain solution A to after being completely dissolved；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain irregular structure two dimension tungsten
Sour bismuth nanometer sheet.
The present invention has the advantages that compared with prior art：The present invention is synthesized using simple step hydro-thermal reaction
The two-dimentional Bismuth tungstate nano-sheet of size and structure-controllable, synthetic method is simple to operate, raw material is green, cost is cheap, prepared by product
Cycle is short, reproducible, is easy to promote.
Brief description of the drawings
Fig. 1 is the field emission scanning electron microscope figure of two-dimentional Bismuth tungstate nano-sheet made from embodiment 1-3, and wherein a is embodiment
1st, b be embodiment 2, c be embodiment 3, as seen from the figure as predecessor concentration gradually reduces, the thickness of Bismuth tungstate nano-sheet is gradual
Reduce, and pattern gradually becomes class quadrilateral structure from ellipsoid like structure；
Fig. 2 is the field emission scanning electron microscope figure of two-dimentional Bismuth tungstate nano-sheet made from embodiment 4-6, and wherein a is embodiment 4, b is
Embodiment 5, c are embodiment 6, and bismuth tungstate in the form of sheets, and intersects and fitted together as seen from the figure, with the increasing of pH value
Add, the thickness of Bismuth tungstate nano-sheet gradually reduces, and cross one another phenomenon gradually tails off；
Fig. 3 is the field emission scanning electron microscope figure of two-dimentional Bismuth tungstate nano-sheet made from embodiment 7-8, and wherein a is embodiment 7, and b is
Embodiment 8, synthesized as seen from the figure in salpeter solution irregularly and compared with the two-dimentional Bismuth tungstate nano-sheet of flaky texture, in hydrochloric acid
Two-dimentional Bismuth tungstate nano-sheet of the synthesis with class rectangular parallelepiped structure in solution；
Fig. 4 is two-dimentional Bismuth tungstate nano-sheet made from embodiment 1-3 to Cr6+Degraded curve of double curvature, the tungsten prepared as seen from the figure
Sour bismuth nanometer sheet is to Cr6+The two-dimentional Bismuth tungstate nano-sheet prepared with good degradation efficiency, especially embodiment 2,40min bases
This degraded is complete.
Embodiment
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes its complete
Dissolving, the water bismuth nitrates of 361mg five are then added in above-mentioned settled solution, continue to stir 40min, obtained solution is added to height
Press in reactor, be put into after autoclave is sealed in drying box in 120 DEG C of isothermal reaction 24h, it is naturally cold after reaction terminates
But to room temperature, centrifuged after product is taken out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 2
Weigh 33mg sodium tungstates and 5mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes it completely molten
Solution, the water bismuth nitrates of 72.2mg five are then added in above-mentioned settled solution, continue to stir 40min, obtained solution is added to height
Press in reactor, be put into after autoclave is sealed in drying box in 120 DEG C of isothermal reaction 24h, it is naturally cold after reaction terminates
But to room temperature, centrifuged after product is taken out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 3
Weigh 16.5mg sodium tungstates and 2.5mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes its complete
Fully dissolved, the water bismuth nitrates of 36.1mg five are then added in above-mentioned settled solution, continue to stir 40min, obtained solution adds
Into autoclave, it is put into drying box in 120 DEG C of isothermal reaction 24h, is reacted after terminating after autoclave is sealed, from
Room temperature so is cooled to, centrifuged after product is taken out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 4
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes its complete
Dissolving, the water bismuth nitrates of 361mg five are then added in above-mentioned settled solution, continues to stir 40min, then adds 200uL
2mol/L sodium hydroxide solution, continue to stir 10min, obtained solution is added in autoclave, by autoclave
Be put into after sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cool to room temperature, after product is taken out from
Heart separation, it is dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 5
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes its complete
Dissolving, the water bismuth nitrates of 361mg five are then added in above-mentioned settled solution, continues to stir 40min, then adds 400uL
2mol/L sodium hydroxide solution, continue to stir 10min, obtained solution is added in autoclave, by autoclave
Be put into after sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cool to room temperature, after product is taken out from
Heart separation, it is dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 6
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirring makes its complete
Dissolving, the water bismuth nitrates of 361mg five are then added in above-mentioned settled solution, continues to stir 40min, then adds 600uL
2mol/L sodium hydroxide solution, continue to stir 10min, obtained solution is added in autoclave, by autoclave
Be put into after sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cool to room temperature, after product is taken out from
Heart separation, it is dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment 7
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L salpeter solution, stir
It is completely dissolved, then adds the water bismuth nitrates of 361mg five in above-mentioned settled solution, continues to stir 40min, obtained solution
It is added in autoclave, is put into after autoclave is sealed in drying box and terminates in 120 DEG C of isothermal reaction 24h, reaction
Afterwards, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet.EXAMPLE Example 8
Weigh 165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L hydrochloric acid solution, stir
It is completely dissolved, then adds the water bismuth nitrates of 361mg five in above-mentioned settled solution, continues to stir 40min, obtained solution
It is added in autoclave, is put into after autoclave is sealed in drying box and terminates in 120 DEG C of isothermal reaction 24h, reaction
Afterwards, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet.
Embodiment above describes the general principle of the present invention, main features and advantages, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (7)
1. the method that one step hydro thermal method synthesizes different-shape bismuth tungstate two dimension catalysis material, it is characterised in that concretely comprise the following steps：
（1）16.5-165mg sodium tungstates and 2.5-25mg cetrimonium bronmides are added to 40mL deionized waters, nitric acid
In solution or hydrochloric acid solution, stirring obtains solution A to after being completely dissolved, and wherein sodium tungstate and cetrimonium bronmide rubs
You are than being 5:1；
（2）The water bismuth nitrates of 3.61-361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）It is placed in by solution B or after sodium hydroxide solution will be added in solution B in autoclave, then by autoclave
Be put into after sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cool to room temperature, after product is taken out from
Heart separation, the bismuth tungstate two dimension catalysis material for being dried to obtain different sizes and structure.
2. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by：Step（1）Described in the molar concentration of salpeter solution be 2mol/L, the molar concentration of hydrochloric acid solution is 2mol/L.
3. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by：Step（3）Described in the molar concentration of sodium hydroxide solution be 2mol/L, the addition of sodium hydroxide solution is
200-600μL。
4. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by concretely comprising the following steps：
（1）16.5-165mg sodium tungstates and 2.5-25mg cetrimonium bronmides are added in 40mL deionized waters, stirred
Mix to after being completely dissolved and obtain solution A, wherein the mol ratio of sodium tungstate and cetrimonium bronmide is 5:1；
（2）The water bismuth nitrates of 36.1-361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain two-dimentional bismuth tungstate nanometer
Piece, as the gradual reduction of predecessor concentration, the thickness of two-dimentional Bismuth tungstate nano-sheet gradually reduce in building-up process, and two dimension
The structure of Bismuth tungstate nano-sheet gradually becomes class quadrangle by class ellipse.
5. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by concretely comprising the following steps：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL deionized waters, stirred to completely molten
Solution A is obtained after solution；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）It is placed in after 200-600 μ L 2mol/L sodium hydroxide solution will be added in solution B in autoclave, then by high pressure
It is put into after reactor sealing in drying box in 120 DEG C of isothermal reaction 24h, after reaction terminates, naturally cools to room temperature, product is taken
Centrifuged after going out, be dried to obtain two-dimentional Bismuth tungstate nano-sheet, with the increase of sodium hydroxide solution addition in building-up process,
The thickness of two-dimentional Bismuth tungstate nano-sheet gradually reduces, and cross one another phenomenon gradually decreases.
6. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by concretely comprising the following steps：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L hydrochloric acid solutions, stirred
Solution A is obtained to after being completely dissolved；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain class rectangular parallelepiped structure two dimension
Bismuth tungstate nano-sheet.
7. the method for one step hydro thermal method synthesis different-shape bismuth tungstate two dimension catalysis material according to claim 1, its
It is characterised by concretely comprising the following steps：
（1）165mg sodium tungstates and 25mg cetrimonium bronmides are added in 40mL 2mol/L salpeter solution, stirred
Mix and obtain solution A to after being completely dissolved；
（2）The water bismuth nitrates of 361mg five are added in solution A and are uniformly mixed to obtain solution B；
（3）Solution B is placed in autoclave, then is put into after autoclave is sealed anti-in 120 DEG C of constant temperature in drying box
After answering 24h, reaction to terminate, room temperature is naturally cooled to, centrifuged after product is taken out, be dried to obtain irregular structure two dimension tungsten
Sour bismuth nanometer sheet.
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| CN108906033A (en) * | 2018-07-16 | 2018-11-30 | 河南师范大学 | The method for synthesizing different-thickness Bismuth tungstate nano-sheet catalysis material by regulation pH value of reaction system |
| CN109292953A (en) * | 2018-10-24 | 2019-02-01 | 湖南大学 | Utilize ferriporphyrin-sheet bismuth tungstate Two-dimensional Composites processing antibiotic method |
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