CN105582909B - A kind of preparation method and its usage of bismuth tungstate/Expandable graphite sheet layer nano composite material - Google Patents
A kind of preparation method and its usage of bismuth tungstate/Expandable graphite sheet layer nano composite material Download PDFInfo
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- CN105582909B CN105582909B CN201510979059.4A CN201510979059A CN105582909B CN 105582909 B CN105582909 B CN 105582909B CN 201510979059 A CN201510979059 A CN 201510979059A CN 105582909 B CN105582909 B CN 105582909B
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 66
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 66
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 title claims abstract description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 57
- 239000010439 graphite Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 title description 7
- 239000002114 nanocomposite Substances 0.000 title description 2
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000002086 nanomaterial Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 241000446313 Lamella Species 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 15
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims abstract description 11
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 11
- 229960000892 attapulgite Drugs 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910052625 palygorskite Inorganic materials 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 7
- 239000000969 carrier Substances 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 33
- 238000013019 agitation Methods 0.000 description 18
- 238000001027 hydrothermal synthesis Methods 0.000 description 7
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 7
- 229960000907 methylthioninium chloride Drugs 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000005352 clarification Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 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
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention belongs to support type technical field of composite materials, more particularly to one kind is using expanded graphite nanometer sheet as carrier, and bismuth tungstate is the preparation method and applications of the nano material of active component.Bismuth nitrate, sodium tungstate and expanded graphite are added in deionized water and stirred, insulation reaction under hydrothermal conditions is then transferred into reactor, after wash, dry, grind by washing, alcohol, produce bismuth tungstate/expanded graphite lamella nanostructure composite material.The composite catalytic activity of the present invention is high, can apply to photocatalytic degradation organic matter；And the particle diameter for effectively controlling single bismuth tungstate particle on carrier diminishes, then when prepared small particle bismuth tungstate is carried on other clay carriers, it substantially avoid reunion.
Description
Technical field
It is more particularly to a kind of using expanded graphite nanometer sheet as carrier the invention belongs to support type technical field of composite materials,
Bismuth tungstate is the preparation method and applications of the nano material of active component.
Background technology
Bismuth tungstate (Bi2WO6) it is layer structure, with dielectric, light, from characteristics such as conductors, and bismuth tungstate is visible
There is photocatalysis performance under light, under visible light being capable of photocatalytic water and light degradation organic pollution, therefore bismuth tungstate (Bi2WO6)
Many association areas have good application prospect, are carried on clay as composite that to use be also a good choosing
Select.
Clay has powerful adsorption capacity, good heat endurance, resistance to acids and bases, rheological characteristic, fillibility, and has
The functions such as preferable ion exchange, salt resistance, antigelation, pulping and high-temperature phase-change, are very promising carrier materials.But mesh
Before, the clay application of China is also in relatively low level.
The problem of existing in the application with regard to clay, is mainly reflected in dispersion problem, if for example, the grain of load composition granule
Footpath is larger, even being also resulted on benign carrier, distribution can uneven, generation be reunited, influence is combined.
The content of the invention
The technical problems to be solved by the invention are：A kind of bismuth tungstate/expanded graphite lamella nanostructured is provided first
The preparation method of composite, concrete technology is：
Bismuth nitrate, sodium tungstate and expanded graphite are added in deionized water and stirred, is then transferred into reactor in water
Insulation reaction under heat condition, after wash, dry, grind by washing, alcohol, produce bismuth tungstate/expanded graphite lamella nanostructured and answer
Condensation material, the composite is that, using expanded graphite nanometer sheet as carrier, in expanded graphite area load bismuth tungstate, the present invention is multiple
The composition formula of condensation material is expressed as：Bi2WO6/ EG, wherein Bi2WO6Bismuth tungstate is represented, EG represents expanded graphite nanometer sheet load
Body,
Wherein, the mol ratio of bismuth nitrate and sodium tungstate is 1:3~1:8,
The addition of expanded graphite is 1 according to the mass ratio of expanded graphite and bismuth tungstate:2~1:8 calculate,
Product after hydro-thermal needs to pass through repeatedly to wash to wash with alcohol is dried with eliminating impurity, and being incubated at 60~100 DEG C
12~24h,
Under hydrothermal condition in insulation reaction, hydrothermal temperature is 180~240 DEG C, and hydro-thermal soaking time is 16~24h.
Present invention also offers a kind of answering for bismuth tungstate of above-mentioned preparation/expanded graphite lamella nanostructure composite material
With：Will the composite as catalysis material application,
The present invention prepares bismuth tungstate/expanded graphite lamella nanostructure composite material using one step hydro thermal method, expands
There is graphite larger specific surface area bismuth tungstate can be made more uniformly to be supported on above, it is possible to increase the composite is urged
Change performance；
In addition, answering present invention also offers a kind of bismuth tungstate/expanded graphite lamella nanostructure composite material prepared
With：
By bismuth tungstate/expanded graphite lamella nanostructure composite material as expanded graphite is removed under high temperature, Ran Houtong
Crossing the method for two steps modification makes bismuth tungstate load to above clay, concretely comprises the following steps：
By the bismuth tungstate of above-mentioned preparation/expanded graphite lamella nanostructure composite material in calcining under 900 DEG C of hot environments
To constant weight, obtain bismuth tungstate (bismuth tungstate high temperature resistant, 900 DEG C will not be on recurring structure change), the bismuth tungstate of gained is acidified,
Then by sol-gal process, the bismuth tungstate and clay after acidifying are pressed 1：5 mass ratio is added in 100ml deionized waters,
And lasting stirring is until forming gel under 70 DEG C of water bath conditions, then 80 DEG C of dry 12h, 520 DEG C of calcining 2h, obtain wolframic acid
Bismuth/clay composite (Bi2WO6/ ATP),
Wherein, above-mentioned souring operation be use Solute mass fraction for 10% hydrochloric acid 5ml, it is right under normal temperature (25 DEG C)
Bismuth tungstate is modified, modified to be washed with absolute ethyl alcohol 3 times, 80 DEG C of drying,
Clay is attapulgite.
The present invention has the beneficial effect that：
1st, expanded graphite can not only promote the effectively scattered of product bismuth tungstate, and the present invention fully consciousness as carrier
To and make use of expanded graphite to wind the particle diameter that the template effect that is provided of space structure effectively controls single bismuth tungstate particle
When diminishing, then prepared small particle bismuth tungstate is carried on other clay carriers, it can just it is equably loaded up, keep away
Exempt to reunite；
2nd, the light that the loose structure of expanded graphite and stronger absorption property can maintain bismuth tungstate suspension system higher is urged
Change efficiency.
3rd, the electric conductivity of graphite can shift photo-generated carrier and avoid being combined, so as to improve bismuth tungstate/Expandable graphite sheet
The layer light-catalysed activity of nanostructure composite material；
4th, the present invention is made the bismuth tungstate piece relative distribution for loading to expanded graphite surface, obtained by the hydro-thermal of proper temperature
To bismuth tungstate/expanded graphite lamella nanostructure composite material, relative to pure bismuth tungstate, the catalytic activity of the composite has
Improved；
5th, the inventive method is simple, and easy to control, cost is low.
Brief description of the drawings
Fig. 1 is Bi2WO6, EG and the Bi prepared by embodiment 12WO6/EG(Bi2WO6/ EG=1/2) sample XRD spectra；
Fig. 2 is the Bi prepared by embodiment 12WO6/EG(Bi2WO6/ EG=1/2) sample 100nm scale ranges TEM shine
Piece；
Fig. 3 is the Bi prepared by embodiment 12WO6/EG(Bi2WO6/ EG=1/2) concentration degraded of the sample to methylene blue
Curve.
Fig. 4 is the bismuth tungstate/attapulgite composite material (Bi prepared respectively in embodiment 1 and comparative example 12WO6/
ATP) to the concentration degradation curve of methylene blue.
Embodiment
The preparation of expanded graphite：
By crystalline flake graphite, the mass ratio of the concentrated sulfuric acid, hydrogen peroxide and potassium bichromate is 10：30：5：1 takes sample, in 40 DEG C of perseverances
Aoxidized in tepidarium, intercalation 12h, then by crystalline flake graphite 1:0.9HNO3Amount add nitric acid, secondary intercalation, continue react
30min, is washed, and drying instantaneously expands in 900 DEG C of Muffle furnaces, obtains expanded graphite.
Embodiment 1
The bismuth nitrate for weighing 0.17g first is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again
0.047g sodium tungstate is added into white solution, continues magnetic agitation 30min and is mixed to get white mixed solution, to described molten
The expanded graphite that 0.2g is added in liquid continues magnetic agitation 10min, obtains black turbid solution；Above-mentioned solution is put into 100ml
Ptfe autoclave, then 180 DEG C of hydro-thermal reaction 24h；Reaction takes out reactor and obtains lower black precipitation after terminating, on
Layer settled solution；By black precipitate deionized water, absolute ethyl alcohol washing, then 80 DEG C of drying, grinding obtains bismuth tungstate/expansion
Graphite flake layer nanostructure composite material.
X-ray powder diffraction experiment is carried out to gained sample, and its pattern and structure are observed under transmission electron microscope, according to reality
Apply bismuth tungstate made from the technological parameter of example 1/expanded graphite lamella nanostructure composite material and bismuth tungstate, expanded graphite
XRD spectrum is as shown in Figure 1.Bismuth tungstate and the respective characteristic diffraction peak of expanded graphite are occurred in that in the XRD of composite, illustrates swollen
Swollen graphite is successfully combined sodium tungstate.
EG/Bi2WO6The TEM photos of sample are as shown in Figure 2.It can be seen that expanded graphite nanometer sheet and bismuth tungstate
Piece is more uniformly combined with each other, consistent with XRD result.
Bi2WO6、EG/Bi2WO6Sample is to the degradation curve of methylene blue as shown in figure 3, it can be seen that Bi2WO6
Clearance to methylene blue is about 70%, EG/Bi2WO6Sample is to the clearance of methylene blue up to more than 97%.
Again by the bismuth tungstate obtained in the present embodiment/expanded graphite lamella nanostructure composite material in 900 DEG C of high temperature rings
Be fired to constant weight under border, obtain bismuth tungstate (bismuth tungstate high temperature resistant, 900 DEG C will not be on recurring structure change), by the tungsten of gained
To mix progress in 2 hours at 25 DEG C acidified modified for 10% hydrochloric acid for sour bismuth and 5ml Solute mass fractions, is used again after filtering
Absolute ethyl alcohol washing bismuth tungstate 3 times, 80 DEG C of drying；Then by sol-gal process, by the bismuth tungstate after acidifying and 1g concave convex rods
Soil is added in 100ml deionized waters, and is persistently stirred under 70 DEG C of water bath conditions until forming gel, then 80 DEG C of dryings
12h, 520 DEG C of calcining 2h, obtains bismuth tungstate/attapulgite composite material (Bi2WO6/ ATP), degraded of this material to methylene blue
Rate curve is as shown in Figure 4.
Comparative example 1：
The bismuth nitrate for weighing 0.17g first is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again
0.047g sodium tungstate is added into white solution, continues magnetic agitation 30min and is mixed to get white mixed solution, to described molten
1g attapulgites are added in liquid and continue magnetic agitation 10min, cloudy grey solution is obtained；Above-mentioned solution is put into 100ml poly- four
PVF reactor, then 180 DEG C of hydro-thermal reaction 24h；Reaction takes out reactor after terminating and obtains lower floor's gray precipitate, and upper strata is clear
Clear solution；By gray precipitate deionized water, absolute ethyl alcohol washing, then 80 DEG C of drying, grinding obtains bismuth tungstate/attapulgite
Nanostructure composite material.This material is to the degradation rate curve of methylene blue as shown in curve A in accompanying drawing 4.
By relatively more visible：By the introducing of expanded graphite in the present invention, fully refined the particle diameter of bismuth tungstate, then by its
It is scattered compared to the bismuth tungstate that growth in situ comes out to be more uniformly distributed after being carried on attapulgite, preferably avoid reunion.
Embodiment 2：
The bismuth nitrate for weighing 0.17g is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again to white
0.05g sodium tungstate is added in color solution, continuation magnetic agitation 30min is mixed to get white mixed solution and added into the solution
The expanded graphite for entering 0.3g continues magnetic agitation 10min, obtains black turbid solution；Above-mentioned solution is put into 100ml polytetrafluoros
Ethylene reaction kettle, then 170 DEG C of hydro-thermal reaction 18h；Reaction takes out reactor and obtains lower black precipitation, upper strata clarification after terminating
Solution；By black precipitate deionized water, absolute ethyl alcohol washing, then 70 DEG C of drying, grinding obtains bismuth tungstate/Expandable graphite sheet
Layer nanostructure composite material, subsequent detection such as embodiment 1.
Embodiment 3：
The bismuth nitrate for weighing 0.17g is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again to white
0.06g sodium tungstate is added in color solution, continuation magnetic agitation 30min is mixed to get white mixed solution and added into the solution
The expanded graphite for entering 0.4g continues magnetic agitation 10min, obtains black turbid solution；Above-mentioned solution is put into 100ml polytetrafluoros
Ethylene reaction kettle, then 160 DEG C of hydro-thermal reaction 16h；Reaction takes out reactor and obtains lower black precipitation, upper strata clarification after terminating
Solution；By black precipitate deionized water, absolute ethyl alcohol washing, then 60 DEG C of drying, grinding obtains bismuth tungstate/Expandable graphite sheet
Layer nanostructure composite material, subsequent detection such as embodiment 1.
Embodiment 4：
The bismuth nitrate for weighing 0.17g is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again to white
0.07g sodium tungstate is added in color solution, continuation magnetic agitation 30min is mixed to get white mixed solution and added into the solution
The expanded graphite for entering 0.5g continues magnetic agitation 10min, obtains black turbid solution；Above-mentioned solution is put into 100ml polytetrafluoros
Ethylene reaction kettle, then 160 DEG C of hydro-thermal reaction 14h；Reaction takes out reactor and obtains lower black precipitation, upper strata clarification after terminating
Solution；By black precipitate deionized water, absolute ethyl alcohol washing, then 60 DEG C of drying, grinding obtains bismuth tungstate/Expandable graphite sheet
Layer nanostructure composite material, subsequent detection such as embodiment 1.
Embodiment 5：
The bismuth nitrate for weighing 0.17g is dissolved in 50ml deionized water, and magnetic agitation 30min obtains white solution；Again to white
0.07g sodium tungstate is added in color solution, continuation magnetic agitation 30min is mixed to get white mixed solution and added into the solution
0.6g expanded graphite continues magnetic agitation 10min, obtains black turbid solution；Above-mentioned solution is put into 100ml polytetrafluoroethyl-nes
Alkene reaction kettle, then 140 DEG C of hydro-thermal reaction 12h；Reaction takes out reactor and obtains lower black precipitation after terminating, upper strata clarification is molten
Liquid；By black precipitate deionized water, absolute ethyl alcohol washing, then 60 DEG C of drying, grinding obtains bismuth tungstate/expanded graphite lamella
Nanostructure composite material, subsequent detection such as embodiment 1.
Claims (2)
1. a kind of application of bismuth tungstate/expanded graphite lamella nanostructure composite material, it is characterised in that：
The preparation method of described bismuth tungstate/expanded graphite lamella nanostructure composite material is, by bismuth nitrate, sodium tungstate and swollen
Swollen graphite be added in deionized water stir, be then transferred into reactor insulation reaction under hydrothermal conditions, after by washing,
Alcohol is washed, dries, ground, and produces bismuth tungstate/expanded graphite lamella nanostructure composite material；
Described application is that bismuth tungstate/expanded graphite lamella nanostructure composite material is placed under high temperature and expanded graphite is removed
Go, the method being then modified by two steps makes bismuth tungstate load to above clay,
Specifically, by bismuth tungstate/expanded graphite lamella nanostructure composite material in being fired to constant weight under 900 DEG C of hot environments,
Obtain bismuth tungstate, after the acidifying of the bismuth tungstate of gained, by sol-gal process and clay under water bath condition lasting stirring until
Gel is formed, then drying and calcining obtains bismuth tungstate/clay composite.
2. the application of bismuth tungstate as claimed in claim 1/expanded graphite lamella nanostructure composite material, it is characterised in that：
Described clay is attapulgite.
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| CN106975478A (en) * | 2017-03-17 | 2017-07-25 | 江苏省华源矿业有限公司 | The preparation method of bismuth tungstate/attapulgite composite material |
| CN107649117B (en) * | 2017-10-27 | 2020-06-30 | 盛世生态环境股份有限公司 | Bismuth molybdate/attapulgite composite visible light catalytic material, and preparation method and application thereof |
| CN108620061B (en) * | 2018-06-21 | 2019-12-06 | 常州大学 | preparation method of mesoporous tungsten oxide (WO3) doped bismuth tungstate (Bi2WO6) composite photocatalyst |
| CN110586149B (en) * | 2019-09-24 | 2020-09-04 | 湖南大学 | Bismuth molybdate/titanium carbide heterojunction two-dimensional photocatalytic material and preparation method and application thereof |
| CN111471192B (en) * | 2019-10-15 | 2021-07-16 | 中山大学 | Preparation method and application of bismuth tungstate-graphene-conductive hydrogel |
| CN112371113A (en) * | 2020-12-05 | 2021-02-19 | 常州大学 | Bi2WO6Preparation method and application of-rGO visible light catalyst |
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| DE10353954A1 (en) * | 2003-11-18 | 2005-06-09 | Basf Ag | Preparation of acrolein, for e.g. preparing acrylic acid, comprises heterogeneously catalyzed partial gas phase oxidation of gas mixture comprising propene, molecular oxygen and inert gas at elevated temperature on a fixed catalyst bed |
| CN104971720A (en) * | 2015-06-11 | 2015-10-14 | 西北师范大学 | Bismuth tungstate nanocomposite, and preparation method and application thereof |
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