CN107376900A - The preparation method and applications of bismuth molybdate ultrathin nanometer piece catalysis material - Google Patents
The preparation method and applications of bismuth molybdate ultrathin nanometer piece catalysis material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- DKUYEPUUXLQPPX-UHFFFAOYSA-N dibismuth;molybdenum;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mo].[Mo].[Bi+3].[Bi+3] DKUYEPUUXLQPPX-UHFFFAOYSA-N 0.000 title abstract description 4
- 229910002900 Bi2MoO6 Inorganic materials 0.000 claims abstract description 23
- 229910004619 Na2MoO4 Inorganic materials 0.000 claims abstract description 14
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 14
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 14
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims abstract description 10
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 10
- 230000001699 photocatalysis Effects 0.000 claims abstract description 7
- 238000007146 photocatalysis Methods 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract 3
- 229910021641 deionized water Inorganic materials 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000000243 solution Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 150000002828 nitro derivatives Chemical class 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 125000001967 indiganyl group Chemical group [H][In]([H])[*] 0.000 claims 1
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Substances [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 abstract description 11
- 238000013019 agitation Methods 0.000 abstract description 6
- -1 nitrobenzene compound Chemical class 0.000 abstract description 3
- 238000007605 air drying Methods 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000003643 water by type Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 229910015667 MoO4 Inorganic materials 0.000 description 5
- 239000002086 nanomaterial Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000000636 p-nitrophenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)[N+]([O-])=O 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 241001198704 Aurivillius Species 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 150000001786 chalcogen compounds Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 150000005181 nitrobenzenes Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
-
- 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—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
- C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
- C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a kind of preparation method and applications of bismuth molybdate ultrathin nanometer piece catalysis material, its preparation method is：1)Bi2MoO6The preparation of the predecessor of ultrathin nanometer piece：By a certain amount of Na2MoO4·2H2O is dissolved in a certain amount of deionized water, adds a certain amount of CTAB under agitation, and Bi (NO are stoichiometrically added after being sufficiently stirred3)3·5H2O, it is thoroughly mixed uniformly；2) it is 90 180 DEG C in temperature, the 24h of predecessor hydro-thermal reaction 6；Then product centrifuged, washed, the air drying at 60 DEG C, Bi is made2MoO6Ultrathin nanometer piece.The present invention have the advantages that hydro-thermal prepare, be not required to it is surface protonated, be not required to regulation pH, simple to operate, yield is high and versatile.The photochemical catalyst has efficient photocatalysis to selectively reduction nitrobenzene compound performance.
Description
Technical field
The invention belongs to catalysis technical field, and in particular to a kind of preparation side of bismuth molybdate ultrathin nanometer piece catalysis material
Method and its application.
Background technology
Since graphene is found, two-dimension nano materials turn into important research object as current active material.Two
Dimension nano material has the microstructure and physical and chemical performance that corresponding body phase material do not possess.It is not only able to the intrinsic of strengthening material
Can, while also there is the special natures such as higher than surface, thermal conductivity is good, mechanical strength is big.Two-dimension nano materials can specificity exposure
Active crystal face, there is higher ratio surface, be advantageous to increase avtive spot, promote electric charge in semiconductor and the contact surface of reactant
Aggregation is participated in light-catalyzed reaction.Two-dimension nano materials receive significant attention because of its outstanding light-catalyzed reaction performance.It is existing
It is that liquid phase is peeled off preparing the most important method of two-dimensional nano sheet material, is only applicable to the stratiform formed by Van der Waals force stacking
Crystal, such as graphene, chalcogen compound.The preparation method of study two-dimensional ultrathin oxide nanometer sheet, for enriching two-dimentional material
It is an important breakthrough for material.
Bi2MoO6It is the composite oxides of typical Aurivillius types layer structure, has significantly in visible region
Absorb, there is the ability of visible light catalytic oxidation processing organic pollution.Again because its catalysis material has higher chemistry steady
The advantages that qualitative and nontoxic, numerous focus of attention are caused in recent ten years, and achieve certain achievement in research.Meanwhile
Bi2MoO6Crystal is by Bi2O2Layer and MoO6Octahedral structure lamella is alternately arranged composition, and this lamellar structure has larger ratio
Surface area and unique Electronic Structure.But Bi2MoO6Interlayer closely connected by strong Bi-O keys, and existing biography can not be used
System liquid phase stripping method largely prepares single-layer sheet nano material.Liquid phase stripping method prepares Bi2MoO6Process be present and answer in ultrathin nanometer piece
It is miscellaneous, long preparation period, the problems such as nanometer sheet product is in uneven thickness.
In summary, the simple efficient new method of research, which prepares oxide ultrathin nanometer sheet material, has highly important meaning
Justice.Through consulting literatures, it has been found that there is presently no assist self assembly to prepare Bi using CTAB2MoO6The correlation of ultrathin nanometer piece
Report.
The content of the invention
It is an object of the invention to provide a kind of Bi2MoO6The preparation method of ultrathin nanometer piece catalysis material.This method without
Prolonged liquid phase is needed to peel off, using cetyl trimethylammonium bromide（CTAB）Mixed with reaction raw materials, in lower temperature
Sample is can obtain under hydrothermal reaction condition.This method reaction condition is gentle, simple to operation, obtained Bi2MoO6It is ultra-thin to receive
Rice piece has remarkable photocatalysis performance.
To achieve the above object, the present invention is achieved by the following technical solutions：
A kind of Bi2MoO6The preparation method of ultrathin nanometer piece catalysis material, described Bi2MoO6Nanometer sheet be thickness 10nm with
Under two-dimensional ultrathin nanometer sheet, thickness most I is half of unit cell dimension, is comprised the following steps
（1）By 0.1 ~ 5 mmol Na2MoO4·2H2O is dissolved in 80 mL deionized waters, and stirring is allowed to fully dissolve, and obtains
Na2MoO4·2H2The O aqueous solution；
（2）By 0.1-10.0 mmol cetyl trimethylammonium bromides（CTAB）Add step（1）Gained Na2MoO4·H2O is molten
In liquid, stirring to dissolving；
（3）Stoichiometrically to step（2）Add 0.2-10.0 mmol Bi (NO in resulting solution3)3·5H2O, stir 0.5-
1h；
（4）By step（3）Middle gained ecru suspension is transferred in 100mL autoclaves, and hydro-thermal is anti-at 90-180 DEG C
6-24h is answered, gained sediment obtains Bi through centrifuging, washing, dry2MoO6Ultrathin nanometer piece.
Present invention proposition is under CTAB synergisms, Bi2MoO6By Br therein-Control self assembly hydro-thermal synthetic time series surpass
Thin nanometer sheet.The Bi prepared using the present invention2MoO6Ultrathin nanometer piece, it is applied to photocatalysis to selectively reduction nitro class
Compound.Experimentation is as follows：By 30 mg Bi2MoO6It is dispersed in and is loaded with the reaction bulb of 10 mL nitrobenzene.By reaction bulb in
It is sufficiently stirred at lucifuge and is passed through a large amount of nitrogen for a period of time, catalyst surface p-nitrophenyl is reached absorption-desorption equilibrium.So
After lower Xe light irradiations are stirred at room temperature, a certain amount of reaction solution centrifugation, filtering are regularly taken, with 10 times of dilution in acetonitrile, determines it
The conversion ratio of middle nitrobenzene.
Bi2MoO6The physical property characterizing method of ultrathin nanometer piece catalysis material：Use X-ray diffraction（XRD）Spectrum analysis
Product materials form and structure situation, use field emission scanning electron microscope（FESEM）The pattern of product is observed, is diffused with UV-Vis
The light absorbs situation of (DRS) analysis product is composed, uses transmission electron microscope（TEM）The crystal structure of product is analyzed, product is analyzed with BET
Specific surface area.
The beneficial effects of the present invention are：Bi of the present invention2MoO6The preparation method of ultrathin nanometer piece catalysis material
It is simple and easy to do, be not required to it is surface protonated and regulation reaction solution pH, can by change hydro-thermal reaction temperature and the reaction time and
The thickness of CTAB amount regulation nanometer sheet is added, to obtain the Bi of specific morphology2MoO6Ultrathin nanometer piece catalysis material.
Brief description of the drawings
Fig. 1 is the XRD spectra that product is made in embodiment 1 and comparative example；
Fig. 2 is the DRS spectrograms of product obtained by embodiment 1 and comparative example；
Fig. 3 is Bi obtained by comparative example2MoO6Nanocrystalline TEM photos；
Fig. 4 is Bi obtained by embodiment 1 ~ 42MoO6The TEM photos of nanometer sheet；
Fig. 5 is Bi obtained by embodiment 1 and comparative example2MoO6BET figure；
Fig. 6 is Bi obtained by embodiment 1 and comparative example2MoO6AFM figure；
Fig. 7 is Bi obtained by the embodiment 1 and comparative example described in application examples2MoO6Photocatalysis to selectively reduction nitrobenzene conversion
Rate figure；
Fig. 8 is Bi obtained by the embodiment 1 and comparative example described in application examples2MoO6Photocatalysis to selectively reduction nitrobenzene activity
Figure；
Fig. 9 is comparative example, the Bi obtained by embodiment 1 ~ 52MoO6XRD spectra.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but the present invention is not limited only to these embodiments.
Comparative example
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then 5 mmol are added
Bi(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 100 DEG C of h of hydro-thermal reaction 24；
Question response terminates to be cooled to room temperature, and precipitated product is centrifuged, washed, and is then completely dried at 60 DEG C, obtains Bi2MoO6Nanometer
Particle（Shown in Fig. 3）, its light absorption characteristics is as shown in Figure 2.
Embodiment 1
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then by 5 mmol's
CTAB adds Na under agitation2MoO4In solution, it is sufficiently stirred and is allowed to dissolve, is well mixed；Then 5 mmol Bi are added
(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 90 DEG C of h of hydro-thermal reaction 24；Treat
Reaction end is cooled to room temperature, and precipitated product is centrifuged, washed, is then completely dried at 60 DEG C, obtains Bi2MoO6It is ultra-thin to receive
Rice piece（As shown in the A in Fig. 4）, obtained Bi2MoO6Ultrathin nanometer piece has higher crystallinity（As shown in Figure 1）, its light absorbs
Feature is as shown in Figure 2.
Embodiment 2
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then by 5 mmol's
CTAB adds Na under agitation2MoO4In solution, it is sufficiently stirred and is allowed to dissolve, is well mixed；Then 5 mmol Bi are added
(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 100 DEG C of h of hydro-thermal reaction 24；Treat
Reaction end is cooled to room temperature, and precipitated product is centrifuged, washed, is then completely dried at 60 DEG C, obtains Bi2MoO6It is ultra-thin to receive
Rice piece（As shown in the B in Fig. 4）, its average thickness is in 1nm or so.
Embodiment 3
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then by 5 mmol's
CTAB adds Na under agitation2MoO4In solution, it is sufficiently stirred and is allowed to dissolve, is well mixed；Then 5 mmol Bi are added
(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 120 DEG C of h of hydro-thermal reaction 24；Treat
Reaction end is cooled to room temperature, and precipitated product is centrifuged, washed, is then completely dried at 60 DEG C, obtains Bi2MoO6Still it is super
Thin nanometer sheet（As shown by c in fig 4）.
Embodiment 4
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then by 5 mmol's
CTAB adds Na under agitation2MoO4In solution, it is sufficiently stirred and is allowed to dissolve, is well mixed；Then 5 mmol Bi are added
(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 140 DEG C of h of hydro-thermal reaction 24；Treat
Reaction end is cooled to room temperature, and precipitated product is centrifuged, washed, then at 60 DEG C, is completely dried, obtains Bi2MoO6Still it is
Ultrathin nanometer piece（As shown in the D in Fig. 4）.
Embodiment 5
By 2.5 mmol Na2MoO4·2H2O is dissolved in 80ml deionized waters, is sufficiently stirred and is allowed to dissolve；Then by 5 mmol's
CTAB adds Na under agitation2MoO4In solution, it is sufficiently stirred and is allowed to dissolve, is well mixed；Then 5 mmol Bi are added
(NO3)3·5H2O, stir 30min；Above-mentioned resulting solution is transferred in 100 mL reactors, in 160 DEG C of h of hydro-thermal reaction 24；Treat
Reaction end is cooled to room temperature, and precipitated product is centrifuged, washed, is then completely dried at 60 DEG C, obtains Bi2MoO6Still it is super
Thin nanometer sheet.
Application examples
To above-mentioned gained Bi2MoO6Ultrathin nanometer piece catalysis material carries out answering for photocatalysis to selectively reduction nitro compound
With：
Take comparative example and the gained catalyst 30mg of embodiment 1 to add in reaction bulb respectively, add 10mL nitrobenzene compounds.
Reaction bulb is stirred to 1 h under the conditions of lucifuge, catalyst surface p-nitrophenyl is reached absorption-desorption equilibrium.Then in room temperature
Under stirring, with Xe light irradiation certain times.A certain amount of reaction solution centrifugation is regularly pipetted in During Illumination, takes the upper strata after centrifugation
Liquid filters, with 10 times of dilution in acetonitrile.Then the aniline in high performance liquid chromatography detection product is used.When reacting 40min, Bi2MoO6It is super
The activity of the photo catalytic reduction nitrobenzene of thin nanometer sheet is nanocrystalline 4 times（As shown in Figure 7）.As a result show, using the present invention
The Bi of preparation2MoO6Ultrathin nanometer piece has excellent photocatalytic activity.Presently preferred embodiments of the present invention is the foregoing is only, it is all
The equivalent changes and modifications done according to scope of the present invention patent, it should all belong to the covering scope of the present invention.
Claims (6)
- A kind of 1. Bi2MoO6The preparation method of ultrathin nanometer piece catalysis material, it is characterised in that：Comprise the following steps：（1）By Na2MoO4·2H2O is dissolved in deionized water, is sufficiently stirred and is allowed to dissolve, obtains Na2MoO4·2H2The O aqueous solution；（2）Cetyl trimethylammonium bromide is added into step（1）Gained Na2MoO4·H2In the O aqueous solution, stirring to dissolving； （3）Stoichiometrically to step（2）Bi (NO are added in resulting solution3)3·5H2O, then stir 0.5-1h；（4）By step （3）Middle gained ecru suspension, which is transferred in autoclave, carries out hydro-thermal reaction, and gained is precipitated through centrifuging, washing and do It is dry, produce Bi2MoO6Ultrathin nanometer piece, the thickness of gained nanometer sheet is in below 10nm.
- 2. Bi according to claim 12MoO6The preparation method of ultrathin nanometer piece catalysis material, it is characterised in that：Step （1）The Na2MoO4·2H2O addition is 0.1 ~ 5 mmol, deionized water 80mL.
- 3. Bi according to claim 12MoO6The preparation method of ultrathin nanometer piece catalysis material, it is characterised in that：Step （2）The addition of the cetyl trimethylammonium bromide is 0.1 ~ 10mmol.
- 4. Bi according to claim 12MoO6The preparation method of ultrathin nanometer piece catalysis material, it is characterised in that：Step （3）Bi (the NO3)3·5H2O addition is 0.2 ~ 10mmol.
- 5. Bi according to claim 12MoO6The preparation method of ultrathin nanometer piece catalysis material, it is characterised in that：Step Suddenly（4）The hydrothermal temperature is 90-180 DEG C, reaction time 6-24h.
- A kind of 6. Bi made from preparation method as claimed in claim 12MoO6The application of ultrathin nanometer piece, it is characterised in that：Institute The Bi stated2MoO6The ultrathin nanometer piece catalyst reduction nitro compound of photocatalysis to selectively at room temperature.
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| CN108940366A (en) * | 2018-06-28 | 2018-12-07 | 华南理工大学 | A kind of duct can modulation Fe Base Metal organic backbone-phosphotungstic acid preparation method |
| CN109569735A (en) * | 2018-11-29 | 2019-04-05 | 南昌航空大学 | A kind of bismuth series photocatalyst and its preparation method and application |
| CN110498487A (en) * | 2019-09-06 | 2019-11-26 | 西安建筑科技大学 | A kind of preparation method, product and its application of the modified bismuth molybdate optoelectronic pole of cetyl trimethylammonium bromide |
| CN111804295A (en) * | 2019-04-12 | 2020-10-23 | 中国科学技术大学 | Method for preparing oxygen vacancy-containing bismuth tungstate ultrathin slice, oxygen vacancy-containing bismuth tungstate ultrathin slice and application thereof |
| CN111905715A (en) * | 2020-06-22 | 2020-11-10 | 江苏中江材料技术研究院有限公司 | Plasma-induced Bi2MoO6Method for preparing photocatalyst |
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| CN113441132A (en) * | 2021-06-10 | 2021-09-28 | 南昌航空大学 | Preparation method of high-activity bismuth molybdate/biochar composite photocatalyst based on strong interface interaction |
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| CN115845835A (en) * | 2022-12-14 | 2023-03-28 | 河南大学 | Modified bismuth molybdate, preparation method thereof and application thereof in photocatalytic hydrocarbon compound oxidation reaction |
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| CN108940366A (en) * | 2018-06-28 | 2018-12-07 | 华南理工大学 | A kind of duct can modulation Fe Base Metal organic backbone-phosphotungstic acid preparation method |
| CN109569735A (en) * | 2018-11-29 | 2019-04-05 | 南昌航空大学 | A kind of bismuth series photocatalyst and its preparation method and application |
| CN111804295A (en) * | 2019-04-12 | 2020-10-23 | 中国科学技术大学 | Method for preparing oxygen vacancy-containing bismuth tungstate ultrathin slice, oxygen vacancy-containing bismuth tungstate ultrathin slice and application thereof |
| CN110498487A (en) * | 2019-09-06 | 2019-11-26 | 西安建筑科技大学 | A kind of preparation method, product and its application of the modified bismuth molybdate optoelectronic pole of cetyl trimethylammonium bromide |
| CN110498487B (en) * | 2019-09-06 | 2021-12-24 | 西安建筑科技大学 | Preparation method of cetyl trimethyl ammonium bromide modified bismuth molybdate photoelectrode, product and application thereof |
| CN111905715A (en) * | 2020-06-22 | 2020-11-10 | 江苏中江材料技术研究院有限公司 | Plasma-induced Bi2MoO6Method for preparing photocatalyst |
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| CN112209448A (en) * | 2020-08-27 | 2021-01-12 | 南京邮电大学 | Ultra-small FeS nanodot and preparation method and application thereof |
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| CN113856703A (en) * | 2021-10-15 | 2021-12-31 | 泉州师范学院 | Indium zinc sulfide and bismuth molybdate nanosheet composite photocatalyst with nanoflower structure and preparation method and application thereof |
| CN113856703B (en) * | 2021-10-15 | 2023-12-29 | 泉州师范学院 | Indium zinc sulfide and bismuth molybdate nano-sheet composite photocatalyst with nano-flower structure, and preparation method and application thereof |
| CN114210322A (en) * | 2021-12-21 | 2022-03-22 | 辽宁大学 | Bi0/Bi2MoO6{010} wave-absorbing material with high exposure {010} crystal face, preparation method and application |
| CN114210322B (en) * | 2021-12-21 | 2023-05-26 | 辽宁大学 | Bi0/Bi2MoO6{010} wave-absorbing material with high exposure {010} crystal face, preparation method and application |
| CN114335501A (en) * | 2021-12-31 | 2022-04-12 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of carbon-coated bismuth molybdate nanosheet negative electrode material |
| CN115845835A (en) * | 2022-12-14 | 2023-03-28 | 河南大学 | Modified bismuth molybdate, preparation method thereof and application thereof in photocatalytic hydrocarbon compound oxidation reaction |
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