CN108722446A - A kind of preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets - Google Patents
A kind of preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets Download PDFInfo
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- CN108722446A CN108722446A CN201810610411.0A CN201810610411A CN108722446A CN 108722446 A CN108722446 A CN 108722446A CN 201810610411 A CN201810610411 A CN 201810610411A CN 108722446 A CN108722446 A CN 108722446A
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- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229940073609 bismuth oxychloride Drugs 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 39
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 15
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims abstract description 5
- 229930195725 Mannitol Natural products 0.000 claims abstract description 5
- 235000010355 mannitol Nutrition 0.000 claims abstract description 5
- 239000000594 mannitol Substances 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000001338 self-assembly Methods 0.000 abstract description 3
- 238000011017 operating method Methods 0.000 abstract description 2
- OZKCXDPUSFUPRJ-UHFFFAOYSA-N oxobismuth;hydrobromide Chemical compound Br.[Bi]=O OZKCXDPUSFUPRJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000003786 synthesis reaction Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 229910052797 bismuth Inorganic materials 0.000 description 10
- CBACFHTXHGHTMH-UHFFFAOYSA-N 2-piperidin-1-ylethyl 2-phenyl-2-piperidin-1-ylacetate;dihydrochloride Chemical compound Cl.Cl.C1CCCCN1C(C=1C=CC=CC=1)C(=O)OCCN1CCCCC1 CBACFHTXHGHTMH-UHFFFAOYSA-N 0.000 description 6
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000007146 photocatalysis Methods 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- LGKICYMSTAPUPY-UHFFFAOYSA-M O(Br)Br.[Bi].Cl[Bi]=O Chemical compound O(Br)Br.[Bi].Cl[Bi]=O LGKICYMSTAPUPY-UHFFFAOYSA-M 0.000 description 3
- 230000001476 alcoholic effect Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- AHUBLGVDRKDHAT-UHFFFAOYSA-N [Bi]=O.[Cl] Chemical compound [Bi]=O.[Cl] AHUBLGVDRKDHAT-UHFFFAOYSA-N 0.000 description 2
- WGKMWBIFNQLOKM-UHFFFAOYSA-N [O].[Cl] Chemical compound [O].[Cl] WGKMWBIFNQLOKM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007740 vapor deposition 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- B01J35/23—
-
- B01J35/39—
-
- B01J35/50—
-
- 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
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
Abstract
The invention discloses a kind of preparation methods of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets, belong to the synthesis technical field of catalysis material.Technical scheme of the present invention main points are：Five nitric hydrate bismuths and neopelex are dissolved in mannitol solution, it is stirred at room temperature to being completely dissolved; take saturated nacl aqueous solution to be slowly added in above-mentioned solution; to continue to stir to get white opacity solution; be transferred to react in hydrothermal reaction kettle by acquired solution the ultra-thin bismuth oxychloride nanometer sheet of product is made; take the ultra-thin bismuth oxychloride three-dimensional manometer piece of gained to be distributed in saturation potassium bromide solution, the compound super rich nanometer sheet of three-dimensional structure bismuth oxychloride/bismuth oxybromide to form composition is exchanged by High temperature ion.Operating procedure of the present invention is simple and practicable, and bismuth oxychloride/bismuth oxybromide composite material of synthesis has the three-dimensional structure that ultra-thin two-dimension nanometer sheet is self-assembly of, large specific surface area, stable structure.
Description
Technical field
The invention belongs to the preparing technical fields of catalysis material, and in particular to use solvent structure three-dimensional structure chlorine
Bismuth oxide, and the method that three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets are prepared by ion-exchange.
Background technology
In recent years, environmental pollution and energy shortage are the significant challenges that current mankind faces.Photocatalysis technology can be direct
Normal-temperature deep reaction is carried out as optical drive using solar energy, therefore with wide in terms of the depollution of environment and new energy development
Development prospect.Using conductor oxidate as catalyst, it is to we provide a kind of ideal that luminous energy, which is converted into electric energy and chemical energy,
Using energy source and environmental pollution improvement method.But main problem present in Study on photocatalyst is photoproduction
Electron-hole pair recombination probability height and photoresponse range are relatively narrow.
Bismuth system catalysis material is issued because having special layer structure and relatively narrow energy gap in the irradiation of visible light
The separation of raw electrons and holes.Bismuth series photocatalyst includes mainly bismuth oxide at present, BiOX, the oxysalt of bismuth and multiple
Mould assembly bismuth catalyst etc..Wherein most representative is BiOX（BiOX, X=F, Cl, Br, I）Series compound, because of its tool
There are unique, excellent electronics and optical characteristics, and is considered to be at the ideal chose being catalyzed under visible optical drive.For
One-component photochemical catalyst, it is difficult to accomplish not only with wide absorption region but also with suitable redox current potential.To solve the problems, such as this,
People construct special composite material, such as semiconductor-semiconductor using a variety of methods（S-S）Hetero-junctions, semiconductor-metal（S-
M）Hetero-junctions, semiconductor-carbon（S-C）Hetero-junctions and multicomponent hetero-junctions.These Bimaterial in terface coupling parts are to material
Pattern and photo-generated carrier tool have a significant impact, and then influence its photocatalytic activity.The formation of hetero-junctions can inhibit light
The invalid compound of carrier is given birth to, to greatly improve the photocatalytic activity of catalyst.Since semiconductor composite has centainly
Advantage, thus have many further researchs to BiOX composite photo-catalysts recently.Conjunction in relation to BiOCl/BiOBr composite materials
At also fewer, especially in the two-dimentional BiOCl/BiOBr photocatalyst applications that will have superthin structure in photocatalysis fixed nitrogen side
Face.It is well known that BiOCl greater band gaps（3.17-3.54 eV）, by BiOCl and there is narrow band gap BiOBr semiconductors couplings
Afterwards, valence band and conduction band positions are more suitable, to effectively enhance visible absorption, inhibit photo-generate electron-hole compound, improve current-carrying
The sub- service life.In addition, two-dimensional ultrathin structure makes catalysis material have more high-specific surface area and more how unsaturated surface atom, and
And the atom of surface exposure escapes easily from lattice and generates vacancy, largely influences the physicochemical properties of material.Shen
Number a kind of preparation method of porous bismuth oxyiodide nano-photo catalytic please be disclosed for a patent of CN201210082112.7, mainly
In order to solve existing bismuth oxyiodide visible region light degradation property difference technical problem, but this method preparation process it is cumbersome and
A large amount of organic solvents have been used to be unfavorable for mass producing, it is low to be prepared for bismuth oxyiodide specific surface area for this method in addition, not
Change the photocatalysis performance of bismuth oxyiodide from the root cause, room for promotion is limited.The patent of Publication No. CN101724839A provides
A kind of method preparing BiOCl films using vapor deposition and chemical oxidization method, film obtained have flower-like structure, but system
Standby process need to need special instrument and equipment and high-purity gas do protection gas by complicated processes of physical vapor deposition, cost compared with
Height, it is complicated for operation.BiOI thin-film electros are made using SILAR method in the patent of Publication No. CN101857382A
Pole has application potential in area of solar cell, but this method, which need to pass through to be repeated as many times, could be made required film, operation
Process is relatively complicated.The patent of Publication No. N102974373 A discloses a kind of heterogeneous visible light of bismuth oxychloride/bismuth oxyiodide
The preparation method of catalysis material mainly for providing the material with high catalytic activity and stability, but prepares predecessor chlorine
Bismuth oxide take it is tediously long, the later stage reacted with bismuth oxyiodide also needs to by calcining, the nanometer sheet of formation is thicker and is unfavorable for electronics-
Hole efficiently separates.
Invention content
The technical problem to be solved by the present invention is to provide a kind of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometers
The preparation method of piece, bismuth oxychloride@bismuth oxybromides made from this method have ultra-thin two-dimension structure.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, a kind of three-dimensional structure bismuth oxychloride@bromines oxidation
The preparation method of bismuth composite ultra-thin nanometer sheet, it is characterised in that the specific steps are：By five nitric hydrate bismuths of 0.4-1.5mmol and
0.6-2mmol neopelexes are dissolved in the mannitol solution that 25mL molar concentrations are 0.1M, are stirred at room temperature to complete
Dissolving, takes 5mL saturated nacl aqueous solutions to be added in above-mentioned solution, continues to stir to get white opacity solution, by acquired solution
It is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, the white precipitate that centrifugation generates reaction after being cooled to room temperature is distinguished
It is washed with deionized water and ethyl alcohol, the ultra-thin bismuth oxychloride nanometer sheet of product is made then at 60 DEG C of vacuum drying, it then will be obtained by 3g
Ultra-thin bismuth oxychloride nanometer sheet is distributed in 150-300mL saturation potassium bromide solutions, and three-dimensional is dried to obtain afterwards for 24 hours in 90 DEG C of stirrings
Structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets.
Further preferably, the preparation method of the three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets, it is special
Sign be the specific steps are：Five nitric hydrate bismuths of 1mmol and 1.2mmol neopelexes are dissolved in 25mL molar concentrations
It is complete to dissolving in the mannitol solution of 0.1M, to be stirred at room temperature, take 5mL saturated nacl aqueous solutions to be added in above-mentioned solution, after
It is continuous to stir to get white opacity solution, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, room is cooled to
Centrifugation washs the white precipitate that reaction generates with deionized water and ethyl alcohol respectively after temperature, is made ultra-thin then at 60 DEG C of vacuum drying
Then ultra-thin bismuth oxychloride nanometer sheet obtained by 3g is distributed in 200mL saturation potassium bromide solutions, in 90 by bismuth oxychloride nanometer sheet
DEG C stirring is dried to obtain three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets afterwards for 24 hours.
Operating procedure of the present invention is simple and practicable, reproducible, and bismuth oxychloride@bismuth oxybromides obtained are received with ultra-thin two-dimension
The three-dimensional structure that rice piece is self-assembly of, large specific surface area, stable structure；Bismuth oxychloride@bismuth oxybromides obtained are compound super rich
Nanometer sheet band gap is suitable, is conducive to the separation of photo-generated carrier, while being conducive in catalytic process that lamella stacking to be avoided to cause
Performance degradation, thus photocatalysis field have preferable application prospect.
Description of the drawings
Fig. 1 is the SEM figures of ultra-thin bismuth oxychloride nanometer sheet obtained in comparative example 1 of the present invention, picture amplification factor difference
It is 50000 times；
Fig. 2 is the SEM figures of the compound super rich nanometer sheet of bismuth oxychloride bismuth oxybromide made from the embodiment of the present invention 1, picture times magnification
Number is 50000 times respectively；
Fig. 3 is that ultra-thin bismuth oxychloride nanometer sheet made from comparative example 1 and embodiment 1 of the present invention and bismuth oxychloride@bismuth oxybromides are multiple
Close the XRD diagram of super rich nanometer sheet.
Specific implementation mode
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 range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on the above of the present invention belong to this hair
Bright range.
Embodiment 1
Five nitric hydrate bismuths of 1mmol and 1.2mmol neopelexes are dissolved in the sweet dew that 25mL molar concentrations are 0.1M
In alcoholic solution, it is stirred at room temperature to dissolving completely, takes 5mL saturated nacl aqueous solutions to be slowly added in above-mentioned solution, continue to stir
To white opacity solution, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, is centrifuged after being cooled to room temperature
The white precipitate that reaction generates is washed with deionized water and ethyl alcohol respectively, the ultra-thin chlorine oxygen of product is made then at 60 DEG C of vacuum drying
Change bismuth nanometer sheet；Then ultra-thin bismuth oxychloride nanometer sheet obtained by 3g is distributed in 200mL saturation potassium bromide solutions, is stirred in 90 DEG C
It mixes to be dried in vacuo afterwards for 24 hours and the compound super rich nanometer sheet BOC/BOB-NS1 of three-dimensional structure bismuth oxychloride bismuth oxybromide is made.
Embodiment 2
Five nitric hydrate bismuths of 1mmol and 1.2mmol neopelexes are dissolved in the sweet dew that 25mL molar concentrations are 0.1M
In alcoholic solution, it is stirred at room temperature to dissolving completely, takes 5mL saturated nacl aqueous solutions to be slowly added in above-mentioned solution, continue to stir
To white opacity solution, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, is centrifuged after being cooled to room temperature
The white precipitate that reaction generates is washed with deionized water and ethyl alcohol respectively, the ultra-thin chlorine oxygen of product is made then at 60 DEG C of vacuum drying
Change bismuth nanometer sheet；Then ultra-thin bismuth oxychloride nanometer sheet obtained by 3g is distributed in 300mL saturation potassium bromide solutions, is stirred in 90 DEG C
It mixes to be dried in vacuo afterwards for 24 hours and the compound super rich nanometer sheet BOC/BOB-NS2 of three-dimensional structure bismuth oxychloride bismuth oxybromide is made.
Comparative example 1
Five nitric hydrate bismuths of 1mmol and 1.2mmol neopelexes are dissolved in the sweet dew that 25mL molar concentrations are 0.1M
In alcoholic solution in solution, it is stirred at room temperature to dissolving completely, 5mL saturated nacl aqueous solutions is taken to be slowly added in above-mentioned solution, continue
White opacity solution is stirred to get, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, is cooled to room temperature
It centrifuges afterwards and washs the white precipitate that reaction generates with deionized water and ethyl alcohol respectively, it is super that product is made then at 60 DEG C of vacuum drying
Thin bismuth oxychloride three-dimensional manometer piece BOC.
In conclusion preparation process of the present invention is relatively more simple, condition is easily controllable.In addition, gained bismuth oxychloride@bromines
Bismuth oxide composite material has the three-dimensional structure that ultra-thin two-dimension nanometer sheet is self-assembly of, and has higher specific surface area, enriches
Active site；Meanwhile composite construction is conducive to the generation and separation of photo-generate electron-hole pair, three-dimensional structure has in catalysis
Conducive to the stacking of piece interlayer is avoided, the stability of catalyst is improved.
Embodiment above describes the basic principles and main features and advantage of the present invention, and the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (2)
1. a kind of preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets, it is characterised in that specific step
Suddenly it is：Five nitric hydrate bismuths of 0.4-1.5mmol and 0.6-2mmol neopelexes, which are dissolved in 25mL molar concentrations, is
It in the mannitol solution of 0.1M, is stirred at room temperature to being completely dissolved, 5mL saturated nacl aqueous solutions is taken to be added in above-mentioned solution, after
It is continuous to stir to get white opacity solution, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, room is cooled to
Centrifugation washs the white precipitate that reaction generates with deionized water and ethyl alcohol respectively after temperature, and product is made then at 60 DEG C of vacuum drying
Then it is molten to be distributed to 150-300mL saturation potassium bromide by ultra-thin bismuth oxychloride nanometer sheet for ultra-thin bismuth oxychloride nanometer sheet obtained by 3g
In liquid, three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets are dried to obtain afterwards for 24 hours in 90 DEG C of stirrings.
2. the preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets according to claim 1,
Be characterized in that the specific steps are：By five nitric hydrate bismuths of 1mmol and 1.2mmol neopelexes be dissolved in 25mL moles it is dense
Degree is to be stirred at room temperature to dissolving completely in the mannitol solution of 0.1M, 5mL saturated nacl aqueous solutions is taken to be added in above-mentioned solution,
Continue to stir to get white opacity solution, acquired solution is transferred in hydrothermal reaction kettle in 160 DEG C of hydro-thermal reaction 3h, is cooled to
Centrifugation washs the white precipitate that reaction generates with deionized water and ethyl alcohol respectively after room temperature, is made super then at 60 DEG C of vacuum drying
Then ultra-thin bismuth oxychloride nanometer sheet obtained by 3g is distributed in 200mL saturation potassium bromide solutions by thin bismuth oxychloride nanometer sheet, in
90 DEG C of stirrings are dried to obtain three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheets afterwards for 24 hours.
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| CN201910070709.1A CN109621990A (en) | 2018-06-14 | 2019-01-25 | A kind of preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheet |
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| CN201910070709.1A Pending CN109621990A (en) | 2018-06-14 | 2019-01-25 | A kind of preparation method of three-dimensional structure bismuth oxychloride@bismuth oxybromide composite ultra-thin nanometer sheet |
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| CN110550657A (en) * | 2019-08-28 | 2019-12-10 | 河海大学 | Method for preparing square bismuth oxychloride with adjustable thickness by hydrothermal method |
| CN110665520A (en) * | 2019-10-08 | 2020-01-10 | 河海大学 | Method for preparing BiOCl with adjustable thickness at room temperature |
| CN111282545A (en) * | 2020-02-10 | 2020-06-16 | 东南大学 | Two-dimensional van der waals heterojunction and application thereof |
| CN111686783A (en) * | 2020-07-27 | 2020-09-22 | 齐鲁理工学院 | 2D/2D heterojunction BiO2-x/g-C3N4 nanosheet composite material for photocatalytic nitrogen reduction |
| CN113189188A (en) * | 2021-04-16 | 2021-07-30 | 南通大学 | Preparation method and application of Au NPs @ WP5/BiOBr composite material |
| CN115124076A (en) * | 2022-07-07 | 2022-09-30 | 中南大学 | Method for preparing bismuth-based oxyhalide in batches |
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| CN115739120A (en) * | 2022-11-08 | 2023-03-07 | 昆明理工大学 | Heterojunction photocatalyst integrating full-spectrum response and photothermal effect and preparation and application thereof |
| CN115779936A (en) * | 2022-10-26 | 2023-03-14 | 江苏科技大学 | Spherical BiOBr/BiOCl composite material and preparation method and application thereof |
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| CN112108161B (en) * | 2020-10-15 | 2023-02-14 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for rapidly preparing bismuth vanadate/bismuth oxybromide nanosheet heterojunction photocatalyst, product and application thereof |
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| CN102068998B (en) * | 2011-01-14 | 2012-12-12 | 太原理工大学 | Preparation and application methods of BiOBr/BiOCl compound photocatalyst |
| CN103265076B (en) * | 2013-06-07 | 2015-11-04 | 南京信息工程大学 | A kind of preparation method of sheet-like bismuth oxychloride photocatalyst |
| CN107638886B (en) * | 2017-08-22 | 2020-01-14 | 河南师范大学 | Method for preparing bismuth oxychloride/bismuth oxyiodide composite ultrathin nanosheet by ion exchange method |
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2018
- 2018-06-14 CN CN201810610411.0A patent/CN108722446A/en not_active Withdrawn
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| CN111686783A (en) * | 2020-07-27 | 2020-09-22 | 齐鲁理工学院 | 2D/2D heterojunction BiO2-x/g-C3N4 nanosheet composite material for photocatalytic nitrogen reduction |
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| CN115779936A (en) * | 2022-10-26 | 2023-03-14 | 江苏科技大学 | Spherical BiOBr/BiOCl composite material and preparation method and application thereof |
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