CN106345502A - Nano bismuth-rich sodium phosphate powder photocatalyst and preparation method thereof - Google Patents
Nano bismuth-rich sodium phosphate powder photocatalyst and preparation method thereof Download PDFInfo
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- CN106345502A CN106345502A CN201610627894.6A CN201610627894A CN106345502A CN 106345502 A CN106345502 A CN 106345502A CN 201610627894 A CN201610627894 A CN 201610627894A CN 106345502 A CN106345502 A CN 106345502A
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- sodium phosphate
- phosphate powder
- bismuths
- powder photocatalyst
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- 239000000843 powder Substances 0.000 title claims abstract description 52
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 51
- 239000001488 sodium phosphate Substances 0.000 title claims abstract description 44
- 229910000162 sodium phosphate Inorganic materials 0.000 title claims abstract description 44
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 8
- 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 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 7
- 239000011734 sodium Substances 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 239000011858 nanopowder Substances 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 235000021317 phosphate Nutrition 0.000 abstract 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 238000007146 photocatalysis Methods 0.000 description 7
- 239000000376 reactant Substances 0.000 description 6
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 4
- 229940012189 methyl orange Drugs 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- RAWIELWFUTXHEY-UHFFFAOYSA-M [BiH2]OP(O)(O)=O Chemical compound [BiH2]OP(O)(O)=O RAWIELWFUTXHEY-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 bismuthino compound Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229950000845 politef Drugs 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009941 weaving 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
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- B01J35/39—
-
- B01J35/50—
Abstract
The invention discloses a nano bismuth-rich sodium phosphate powder photocatalyst and a preparation method thereof. A molecular formula of the nano powder photocatalyst is NaBi7P2O16. The preparation method includes: according to a low-temperature molten salt method, taking bismuthic nitrates and phosphates containing sodium and phosphorus as raw materials, weighing according to a certain mass ratio, grinding and well mixing; transferring into a polytetrafluoroethylene-stainless steel hermetic container, putting into a drying oven, keeping a low temperature for a long time, naturally cooling to the room temperature, and performing hot-water soaking, centrifuging, washing and drying to obtain the nano bismuth-rich sodium phosphate powder photocatalyst. The nano bismuth-rich sodium phosphate powder photocatalyst is in a shape of an irregular sheet in a thickness of about 40nm and has advantages of high purity, high crystallinity, great photocatalytic performance and the like. The raw materials are easy to acquire, the preparation process is simple, low reaction temperature and low cost are realized, and the product has a promising application prospect in fields of photocatalytic purification treatment and the like.
Description
Technical field
The present invention relates to a kind of nanometer many bismuths sodium phosphate powder photocatalyst and preparation method thereof, belong to photocatalyst technology
Field.
Background technology
Contain substantial amounts of toxic dye in the waste water that the industry such as weaving, papermaking, plastics, leather is discharged, cause serious
Environmental pollution, these dyestuffs are usually constructed with the aromatic molecule structure of complexity, highly stable in the environment, are difficult to be dropped by biology
Solution, so, how efficiently to remove these pollutant in waste water is scientific circles' problem demanding prompt solution.In the past few decades
In time, semi-conducting material photocatalyst constantly develops, and becomes one of the most promising Green Chemical Technology.Wherein have in a large number
Close tio2The research of base optic catalytic material degradation of dye under ultraviolet light irradiation is reported, but the forbidden band width of this kind of photocatalyst
Degree (3.8ev) is wider, and absorbable light wave is predominantly located at ultra-violet (UV) band, and the absorption to visible ray is less, and this severely limits it should
With.Therefore, develop a kind of new and effective photocatalyst and be always photocatalysis field institute facing challenges.By substantial amounts of exploration
With research, find that bismuthino compound has higher photocatalytic activity, and introduce alkaline-earth metal wherein and can effectively reduce
Energy gap.Research shows, nonmetal oxyacid hydrochlorate bipo4Show good under ultraviolet light during degradable organic pollutant
Photooxidation performance, this is mainly due to (po4)3-In comprise substantial amounts of negative charge so that these phosphate remain in a large number
Dipole, and these dipoles so promote photogenerated charge separate.Thus, introducing alkaline-earth metal in bismuthino phosphate is one
Item significantly works.Novel nano photocatalyst material nabi7p2o16There is good photocatalysis performance and absorb purple
The ability of outer light, with tio2Compare, the energy gap (3.44ev) of nanometer many bismuths sodium phosphate is narrower, and photoresponse scope is wider, is
A kind of sewage purification photocatalyst with potential using value.
At present, rarely have the report with regard to nanometer many bismuths sodium phosphate powder preparation method, and preparation belongs to bismuthino phosphoric acid together with it
The na of salt3bi(po4)2And na3bi2(po4)3The method of Shi Suoyong mostly is solid reaction process.Performance and synthesis from photocatalyst
Process aspect considers, in place of this preparation method has some shortcomings, for example: the method needs higher sintering temperature, and this can cause
Mass energy is lost, and should not carry out the production in enormous quantities of product, and temperature is too high that product particle can be made to grow up, particle diameter distribution
Uneven, easily reunite between granule.Therefore, seek a kind of method of more economical and convenient preparing that particle diameter is little, be uniformly dispersed,
The high nanometer many bismuths sodium phosphate powder photocatalyst of photocatalysis efficiency has positive realistic meaning.
Content of the invention
The present invention is directed to the deficiency that existing many bismuths sodium phosphate powder body synthetic technology exists, and provides one kind to have high efficiency photocatalysis
Performance, be uniformly dispersed, raw material is easy to get, short preparation period, energy consumption are low, easy and simple to handle nanometer many bismuths sodium phosphate powder photocatalyst
And preparation method thereof.
To achieve the above object of the invention, the present invention adopts the following technical scheme that
A kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst, comprises the steps:
1. 1:8～1:16 in mass ratio, the nitrate of bismuth-containing is mixed with the phosphate containing sodium, phosphorus, after grinding 15～60 minutes
Obtain being sufficiently mixed uniform raw material；
2. raw material is placed in polytetrafluoroethylcontainer container, then polytetrafluoroethylcontainer container is placed in stainless steel cauldron, reactor
It is placed in after sealing in constant temperature oven, under conditions of temperature is 120～200 DEG C, react 6～48h；
3. after the completion of reacting, treat that product naturally cools to room temperature, after taking-up, be placed in leaching in the deionized water that temperature is 50～70 DEG C
Bubble 0.5～6h, then through centrifugation, washing, drying and processing, obtain a kind of nanometer many bismuths sodium phosphate powder photocatalyst, its molecular formula
For nabi7p2o16.
The nitrate of bismuth-containing of the present invention is bi (no3)3·5h2o.
The described phosphate containing sodium, phosphorus is na3po4·12h2o.
In preparation method, step 1. in, the nitrate of bismuth-containing with containing sodium, phosphorus phosphatic mass ratio be 1:12；Grind
Time is 30 minutes.
Step 2. in, reaction temperature in constant temperature oven is 180 DEG C；Response time is 12h.
Step 3. in, the temperature of deionized water is 60 DEG C；Soak time is 1h.
Technical solution of the present invention also includes being prepared as described above nanometer many bismuths sodium phosphate powder photocatalyst that method obtains.
The principle of the present invention is: using compound na3po4·12h2O is easy to be melted for fused salt more than 78 DEG C, with
And raw material bi (no3)3·5h2Mass transfer in liquid phase in fused salt for the o, and then make to be fully contacted reaction between two kinds of reactants,
Effectively prevent the phenomenons such as raw material mixing inequality or component segregation.
Compared with prior art, the Advantageous Effects of the present invention:
1st, the preparation method of nanometer many bismuths sodium phosphate powder photocatalyst that the present invention provides, its raw material is simple, easily mixes, reaction
Temperature is low, is conducive to obtaining the little nano-powder of granularity；And short preparation period, reproducible, preparation method is simply it is easy to grasp
Make.
2nd, the nano powder photocatalyst purity as prepared by technical solution of the present invention is high, good crystallinity, and particle diameter is little, dispersion
Property good, photocatalysis efficiency is high.
Brief description
Fig. 1 is the x-ray powder diagram of nanometer many bismuths sodium phosphate powder photocatalyst of the embodiment of the present invention 1 preparation
Spectrum；
Fig. 2 is the sem figure of nanometer many bismuths sodium phosphate powder photocatalyst of the embodiment of the present invention 1 preparation；
Fig. 3 is the tem figure of nanometer many bismuths sodium phosphate powder photocatalyst of the embodiment of the present invention 1 preparation；
Fig. 4 is the uv drses absorption spectrum of nanometer many bismuths sodium phosphate powder photocatalyst of the embodiment of the present invention 1 preparation, inserts
Figure is that its energy gap calculates collection of illustrative plates；
Fig. 5 is nanometer many bismuths sodium phosphate powder photocatalyst degraded methyl orange process (c/c of the embodiment of the present invention 1 preparation0) figure
Spectrum, wherein c0For the original concentration of methyl orange solution, c is not methyl orange solution concentration in the same time；
Fig. 6 is the photocatalysis circulation of nanometer many bismuths sodium phosphate powder photocatalyst degraded methyl orange of the embodiment of the present invention 1 preparation
Figure, through 5 circulation and stress, in figure abscissa is light application time to powder body, and vertical coordinate is (c/c0).
Specific embodiment
With reference to the accompanying drawings and examples technical solution of the present invention is made with further explaination.
Embodiment 1:
By bi (no3)3·5h2O and na3po4·12h2O is weighed with mass ratio 1:12, puts in agate mortar, grinds 30 minutes,
Two kinds of raw materials are made to be sufficiently mixed uniformly；The mixture obtaining is loaded in 30ml polytetrafluoroethylcontainer container, then by politef
Tank is put in stainless steel cauldron, and tightening screw socket makes it seal, and puts in constant temperature oven, is warming up to 180 DEG C, and temperature keeps
12h is constant；After the completion of reaction, after naturally cool to room temperature, take out reactant and put in 60 DEG C of deionized water, soak 1h, then
Through steps such as centrifugation, washing, drying, obtain nanometer many bismuths sodium phosphate powder photocatalyst.This nano powder photocatalyst
Granularity is about 30～100nm.
Referring to accompanying drawing 1, it is the xrd diffracting spectrum of nanometer many bismuths sodium phosphate powder photocatalyst manufactured in the present embodiment,
From figure 1 it appears that the diffraction maximum of powder body is all corresponding with standard jcpds card (no. 44-0188), and no miscellaneous peak is deposited
Illustrating that synthesized nano powder photocatalyst is pure phase nabi7p2o16, diffraction peak intensity is high and sharp, and this powder is described
Body crystallinity is good.
Referring to accompanying drawing 2, it is the pattern sem picture of nanometer many bismuths sodium phosphate powder photocatalyst manufactured in the present embodiment,
From figure 2 it can be seen that the pattern of powder body is lamellar in irregular nanometer, sheet edges are clear, and corner angle are sharp, and powder body is described
Crystallinity is good, and good dispersion.
Referring to accompanying drawing 3, it is the pattern tem picture of nanometer many bismuths sodium phosphate powder photocatalyst manufactured in the present embodiment,
From figure 3, it can be seen that powder granularity is in 30～100nm, thickness about 40nm, granule has certain shape.
Referring to accompanying drawing 4, it is the uv drses suction of nanometer many bismuths sodium phosphate powder photocatalyst manufactured in the present embodiment
Receive spectrum, illustration calculates collection of illustrative plates for its energy gap.Figure 4, it is seen that nanometer many bismuths sodium phosphate powder body 300nm～
Obvious ultraviolet absorption band is occurred in that, direct bandwidth angle value 3.44ev calculating with illustration in the wave-length coverage of 400nm
(361nm) consistent.
Referring to accompanying drawing 5, it is nanometer many bismuths sodium phosphate powder photocatalyst (0.1g) manufactured in the present embodiment in ultraviolet light
Irradiate lower 100ml methyl orange (10mg/l) process (c/c that degrades0) collection of illustrative plates, wherein c0For the original concentration of methyl orange solution, c is not
Methyl orange solution concentration in the same time.From figure 5 it can be seen that the degradation rate of methyl orange is 97% in 30 minutes.
Referring to accompanying drawing 6, it is nanometer many bismuths sodium phosphate powder photocatalyst manufactured in the present embodiment light under ultraviolet light
Catalytic cycle figure, takes the powder body of 0.1g, after each light-catalyzed reaction terminates, by way of centrifugation, sample collection is got up,
It is re-used to the methyl orange solution of same volume same concentrations of degrading after drying, is repeated in above-mentioned steps five times, in figure is horizontal
Coordinate is light application time, and vertical coordinate is (c/c0).From fig. 6 it can be seen that after five circulation and stress, nabi7p2o16Powder
Body is still maintained at 72% to the photocatalysis efficiency of methyl orange solution.
Embodiment 2:
By bi (no3)3·5h2O and na3po4·12h2O is weighed with mass ratio 1:8, puts in agate mortar, grinds 30 minutes, makes
Two kinds of raw materials are sufficiently mixed uniformly；Fill this blend in 30ml polytetrafluoroethylcontainer container, then polytetrafluoroethyltank tank is put into not
In rust steel reactor, tightening screw socket makes it seal, and puts in constant temperature oven, is warming up to 180 DEG C, and temperature keeps 12h constant；Instead
After the completion of answering, after naturally cool to room temperature, take out reactant and put in 60 DEG C of deionized water, soak 1h, then through being centrifuged, washing
The step such as wash, dry, obtaining nanometer many bismuths sodium phosphate powder photocatalyst.
Embodiment 3:
By bi (no3)3·5h2O and na3po4·12h2O is weighed with mass ratio 1:10, puts in agate mortar, grinds 30 minutes,
Two kinds of raw materials are made to be sufficiently mixed uniformly；Fill this blend into afterwards in 30ml polytetrafluoroethylcontainer container, then by polytetrafluoroethyltank tank
Put in stainless steel cauldron, tightening screw socket makes it seal, and puts in constant temperature oven, be warming up to 180 DEG C, temperature keeps 12h
Constant；After the completion of reaction, after naturally cool to room temperature, take out reactant and put in 60 DEG C of deionized water, soak 1h, then through from
The steps such as the heart, washing, drying, obtain nanometer many bismuths sodium phosphate powder photocatalyst.
Embodiment 4:
By bi (no3)3·5h2O and na3po4·12h2O is weighed with mass ratio 1:14, puts in agate mortar, grinds 30 minutes,
Two kinds of raw materials are made to be sufficiently mixed uniformly；Fill this blend into afterwards in 30ml polytetrafluoroethylcontainer container, then by polytetrafluoroethyltank tank
Put in stainless steel cauldron, tightening screw socket makes it seal, and puts in constant temperature oven, be warming up to 180 DEG C, temperature keeps 12h
Constant；After the completion of reaction, after naturally cool to room temperature, take out reactant and put in 60 DEG C of deionized water, soak 1h, then through from
The steps such as the heart, washing, drying, obtain nanometer many bismuths sodium phosphate powder photocatalyst.
Embodiment 5:
By bi (no3)3·5h2O and na3po4·12h2O is weighed with mass ratio 1:16, puts in agate mortar, grinds 30 minutes,
Two kinds of raw materials are made to be sufficiently mixed uniformly；Fill this blend into afterwards in 30ml polytetrafluoroethylcontainer container, then by polytetrafluoroethyltank tank
Put in stainless steel cauldron, tightening screw socket makes it seal, and puts in constant temperature oven, be warming up to 180 DEG C, temperature keeps 12h
Constant；After the completion of reaction, after naturally cool to room temperature, take out reactant and put in 60 DEG C of deionized water, soak 1h, then through from
The steps such as the heart, washing, drying, obtain nanometer many bismuths sodium phosphate powder photocatalyst.
Claims (10)
1. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst is it is characterised in that comprise the steps:
1. 1:8～1:16 in mass ratio, the nitrate of bismuth-containing is mixed with the phosphate containing sodium, phosphorus, after grinding 15～60 minutes
Obtain being sufficiently mixed uniform raw material；
2. raw material is placed in polytetrafluoroethylcontainer container, then polytetrafluoroethylcontainer container is placed in stainless steel cauldron, reactor
It is placed in after sealing in constant temperature oven, under conditions of temperature is 120～200 DEG C, react 6～48h；
3. after the completion of reacting, treat that product naturally cools to room temperature, after taking-up, be placed in leaching in the deionized water that temperature is 50～70 DEG C
Bubble 0.5～6h, then through centrifugation, washing, drying and processing, obtain a kind of nanometer many bismuths sodium phosphate powder photocatalyst, its molecular formula
For nabi7p2o16.
2. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
The nitrate of described bismuth-containing is bi (no3)3·5h2o.
3. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
The described phosphate containing sodium, phosphorus is na3po4·12h2o.
4. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 1. in, the nitrate of bismuth-containing with containing sodium, phosphorus phosphatic mass ratio be 1:12.
5. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 1. in, milling time be 30 minutes.
6. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 2. in, reaction temperature in constant temperature oven is 180 DEG C.
7. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 2. in, the response time be 12h.
8. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 3. in, the temperature of deionized water is 60 DEG C.
9. a kind of method preparing nanometer many bismuths sodium phosphate powder photocatalyst according to claim 1 it is characterised in that:
Step 3. in, soak time be 1h.
10. a kind of nanometer many bismuths sodium phosphate powder photocatalyst obtaining by claim 1 preparation method.
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