CN107746075A - A kind of preparation method of the beta bismuth oxide with strong visible absorption ability - Google Patents
A kind of preparation method of the beta bismuth oxide with strong visible absorption ability Download PDFInfo
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- CN107746075A CN107746075A CN201710998644.8A CN201710998644A CN107746075A CN 107746075 A CN107746075 A CN 107746075A CN 201710998644 A CN201710998644 A CN 201710998644A CN 107746075 A CN107746075 A CN 107746075A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 28
- 229910000416 bismuth oxide Inorganic materials 0.000 title claims abstract description 24
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract 3
- 239000000243 solution Substances 0.000 claims description 75
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 72
- 238000003756 stirring Methods 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 15
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 13
- 235000015165 citric acid Nutrition 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 238000013019 agitation Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 8
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000003643 water by type Substances 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 5
- 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 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 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 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000007146 photocatalysis Methods 0.000 description 5
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G29/00—Compounds of 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
- B01J23/16—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
- B01J23/18—Arsenic, antimony or 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
- 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
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention relates to a kind of preparation method of the beta bismuth oxide with strong visible absorption ability.Bismuth oxide be there are problems that in catalytic applications are closed at present, and the light absorpting ability such as bismuth oxide is not strong, causes photocatalytic activity relatively low, and its photocatalytic activity, which is difficult to reach, meets actual demand.Preparation method step of the present invention is as follows：The solution containing bismuth nitrate, nitric acid and citric acid is mixed with the solution containing citric acid and sodium metaaluminate respectively, by adjusting pH value, water-bath, drying, grinding, washing, air atmosphere calcining, N2The beta bismuth oxide powder with strong visible absorption ability is obtained after being heat-treated under atmosphere.Preparation technology of the present invention is simple, product visible absorption ability is strong.
Description
Technical field
It is net applied to environment the present invention relates to a kind of preparation method of the beta bismuth oxide with strong visible absorption ability
Change field.
Background technology
As problem of environmental pollution is more serious, photocatalysis technology is because the features such as its is economic, environmentally friendly, is at purification of air, place
The fields such as reason sewage, sterilization receive much concern.Bismuth oxide is increasingly becoming a research of novel photocatalyst development field in recent years
Focus, but its photocatalytic activity is low, light absorpting ability is weak.Jiang etc. is main Material synthesis β-Bi2O3(J. Mater.
Chem. A, 2015,3,5119), a kind of bismuth oxide photocatalyst and preparation method thereof is disclosed in patent CN104826623B
And application, obtain nano flower-like beta oxidation bismuth visible light catalyst.It is prepared by above-mentioned document and patent all Successful utilization hydro-thermal methods
Go out beta oxidation bismuth nano material.β-Bi at present2O3It there are problems that in photocatalysis field, as visible absorption is indifferent, lead
Cause its photocatalytic activity relatively low, and relatively low photocatalytic activity is difficult to reach and meets actual demand.How visible ray sound is prepared
Should be able to the strong β-Bi of power2O3Not yet it is seen in report.
The content of the invention
It is an object of the invention to provide a kind of preparation method of the beta bismuth oxide with strong visible absorption ability.
Above-mentioned purpose is realized by following technical scheme：
A kind of preparation method of the beta bismuth oxide with strong visible absorption ability, preparation method step are as follows：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 1~4 mol/L that O, which is dissolved in concentration,
HNO3In solution, then add concentration and form mixing appearance liquid, the magnetic force in course of dissolution for 0.2~1 mol/L citric acids
Stirring, after above-mentioned chemical substance is completely dissolved, continues 30~60min of stirring, then with the NaOH that concentration is 1~4 mol/L
Solution adjusts pH value, and the rate of addition of NaOH solution is controlled in 0.5~2mL/min, molten until mixing by progressively testing pH value
The pH=7 of liquid.
Step 2, at normal temperatures, by glass container by 2mmol citric acid and 2mmol Na [Al (OH)4] be added to
In deionized water, its compound concentration is set to be 0.2~1 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue
30~60min is stirred, generates solution B.
Step 3, at normal temperatures, described solution A is added dropwise in described solution B by new glass container, then used
Concentration is that 1~4 mol/L NaOH solution adjusts the pH value of solution, and the rate of addition of NaOH solution is controlled in 0.5~2mL/
Min, by progressively testing pH value until the pH=7 of solution, 30~60min of stirring is then proceeded to, obtains solution C.
Step 4, under 70~100oC heating-up temperature, solution C 4~15h of water-bath is used electronic during water-bath
Agitator stirs, and rotating speed control is 30~90rpm, obtains presoma D.
Step 5, under 120~160oC heating-up temperatures, presoma D is dried, drying time control is 6~12h, after grinding
Obtain presoma E.
Step 6, at normal temperatures, presoma E is cleaned 3~5 times repeatedly with deionized water, removes the Na in presoma E+With
Al3+Ion, then under 60~120 °C of heating-up temperatures, 12~24h of drying obtains presoma F.
Step 7, in air atmosphere, presoma F is calcined into 2~7h under 315~370 °C, obtains β-Bi2O3Powder.
Step 8, by a certain amount of β-Bi2O3Powder is put into vacuum tube furnace, after vacuumizing, is passed through N2, maintain N2's
Partial pressure is 1 atmospheric pressure, and 2~9h is heat-treated under 200~350 °C, obtain the β with strong visible absorption ability of black-
Bi2O3Powder.
Beneficial effect：
1. the result of the present invention is a kind of photochemical catalyst, energy shortage and environmental pollution are the significant challenges that current mankind faces,
The solar energy of low-density can be converted into highdensity chemical energy by photocatalysis technology, directly utilize sun light degradation and mineralized water
With each pollutant in air.Therefore, photocatalysis technology has wide development in terms of the depollution of environment and new energy development
Prospect.
2. the beta bismuth oxide with strong visible absorption ability prepared by the present invention, compared with prior art, the present invention
Provide one kind and be easily achieved industrialized method.
3. the beta bismuth oxide with strong visible absorption ability prepared by the present invention, the purer beta oxygen of light absorpting ability
Changing bismuth has a more obvious enhancing, and there occurs an obvious red shift for its ABSORPTION EDGE, it is seen that the enhancing of light absorpting ability carries
Light induced electron and the probability in hole are produced in high photochemical catalyst, promotes the increase of photocatalysis efficiency.
Brief description of the drawings：
Accompanying drawing 1 is the obtained beta bismuth oxide X-ray diffraction comparison diagram with strong visible absorption ability of the embodiment of the present invention 1
Spectrum.
Accompanying drawing 2 is the light absorbs figure of the obtained beta bismuth oxide with strong visible absorption ability of the embodiment of the present invention 1
Spectrum.
Embodiment：
Embodiment 1：
Below by specific embodiment, the present invention is described in further detail, and following examples can make this professional technique
The present invention, but do not limit the invention in any way is more completely understood in personnel.
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2O is dissolved in concentration as 1.5
Mol/L HNO3In solution, then add concentration and form mixing appearance liquid, the magnetic in course of dissolution for 0.5 mol/L citric acids
Power stirs, and after above-mentioned chemical substance is completely dissolved, continues to stir 30min, then with the NaOH solution that concentration is 1.5 mol/L
PH value is adjusted, the rate of addition control of NaOH solution is in 2mL/min, by progressively testing pH value until the pH=7 of mixed solution.
Step 2, at normal temperatures, by glass container by 2mmol citric acid and 2mmol Na [Al (OH)4] be added to
In deionized water, its compound concentration is set to be 0.5 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
30min, generate solution B.
Step 3, at normal temperatures, described solution A is added dropwise in described solution B by new glass container, then used
Concentration is that 1.5 mol/L NaOH solution adjusts the pH value of solution, and the rate of addition of NaOH solution is controlled in 2mL/min, passed through
PH value is progressively tested until the pH=7 of solution, then proceedes to stir 30min, obtains solution C.
Step 4, under 70oC heating-up temperature, solution C water-bath 14h is stirred during water-bath using electric mixer
Mix, rotating speed control is 30rpm, obtains presoma D.
Step 5, under 120oC heating-up temperatures, presoma D is dried, drying time control is 12h, and forerunner is obtained after grinding
Body E.
Step 6, at normal temperatures, presoma E is cleaned 3 times repeatedly with deionized water, removes the Na in presoma E+And Al3+
Ion, then under 80 °C of heating-up temperatures, drying 14h obtains presoma F.
Step 7, in air atmosphere, presoma F is calcined into 3h under 355 °C, obtains β-Bi2O3Powder.
Step 8, by a certain amount of β-Bi2O3Powder is put into vacuum tube furnace, after vacuumizing, is passed through N2, maintain N2's
Partial pressure is 1 atmospheric pressure, is heat-treated 6 hours under 260 °C, obtains the β-Bi with strong visible absorption ability of black2O3Powder
End.
Embodiment 2：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 2 mol/L's that O, which is dissolved in concentration,
HNO3In solution, then add concentration and formed to mix for 0.8 mol/L citric acids and hold liquid, the magnetic agitation in course of dissolution,
After above-mentioned chemical substance is completely dissolved, continue to stir 50min, then adjust pH value with the NaOH solution that concentration is 2 mol/L,
The rate of addition control of NaOH solution is in 1.5mL/min, by progressively testing pH value until the pH=7 of mixed solution.
Step 2, at normal temperatures, by glass container by 2mmol citric acid and 2mmol Na [Al (OH)4] be added to
In deionized water, its compound concentration is set to be 0.6 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
40min, generate solution B.
Step 3, at normal temperatures, described solution A is added dropwise in described solution B by new glass container, then used
Concentration is that 2 mol/L NaOH solution adjusts the pH value of solution, and the rate of addition of NaOH solution is controlled in 1.5mL/min, passed through
PH value is progressively tested until the pH=7 of solution, then proceedes to stir 40min, obtains solution C.
Step 4, under 80oC heating-up temperature, solution C water-bath 12h is stirred during water-bath using electric mixer
Mix, rotating speed control is 40rpm, obtains presoma D.
Step 5, under 130oC heating-up temperatures, presoma D is dried, drying time control is 10h, and forerunner is obtained after grinding
Body E.
Step 6, at normal temperatures, presoma E is cleaned 3 times repeatedly with deionized water, removes the Na in presoma E+And Al3+
Ion, then under 85 °C of heating-up temperatures, drying 12h obtains presoma F.
Step 7, in air atmosphere, presoma F is calcined into 4h under 350 °C, obtains β-Bi2O3Powder.
Step 8, by a certain amount of β-Bi2O3Powder is put into vacuum tube furnace, after vacuumizing, is passed through N2, maintain N2's
Partial pressure is 1 atmospheric pressure, is heat-treated 5 hours under 270 °C, obtains the β-Bi with strong visible absorption ability of black2O3Powder
End.
Embodiment 3：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 1 mol/L's that O, which is dissolved in concentration,
HNO3In solution, then add concentration and formed to mix for 0.5 mol/L citric acids and hold liquid, the magnetic agitation in course of dissolution,
After above-mentioned chemical substance is completely dissolved, continue to stir 50min, then adjust pH value with the NaOH solution that concentration is 1 mol/L,
The rate of addition control of NaOH solution is in 1.5mL/min, by progressively testing pH value until the pH=7 of mixed solution.
Step 2, at normal temperatures, by glass container by 2mmol citric acid and 2mmol Na [Al (OH)4] be added to
In deionized water, its compound concentration is set to be 0.5 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
40min, generate solution B.
Step 3, at normal temperatures, described solution A is added dropwise in described solution B by new glass container, then used
Concentration is that 1 mol/L NaOH solution adjusts the pH value of solution, the rate of addition control of NaOH solution in 1mL/min, by by
Pacing tries pH value until the pH=7 of solution, then proceedes to stir 40min, obtains solution C.
Step 4, under 90oC heating-up temperature, solution C water-bath 10h is stirred during water-bath using electric mixer
Mix, rotating speed control is 40rpm, obtains presoma D.
Step 5, under 125oC heating-up temperatures, presoma D is dried, drying time control is 13h, and forerunner is obtained after grinding
Body E.
Step 6, at normal temperatures, presoma E is cleaned 3 times repeatedly with deionized water, removes the Na in presoma E+And Al3+
Ion, then under 85 °C of heating-up temperatures, drying 12h obtains presoma F.
Step 7, in air atmosphere, presoma F is calcined into 4h under 350 °C, obtains β-Bi2O3Powder.
Step 8, by a certain amount of β-Bi2O3Powder is put into vacuum tube furnace, after vacuumizing, is passed through N2, maintain N2's
Partial pressure is 1 atmospheric pressure, is heat-treated 7 hours under 250 °C, obtains the β-Bi with strong visible absorption ability2O3Powder.
Claims (9)
1. a kind of preparation method of the beta bismuth oxide with strong visible absorption ability, it is characterised in that comprise the following steps：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 1~4 mol/L that O, which is dissolved in concentration,
HNO3In solution, then add concentration and form mixed solution, the magnetic force in course of dissolution for 0.2~1 mol/L citric acids
Stirring, after above-mentioned chemical substance is completely dissolved, continues 30~60min of stirring, then with the NaOH that concentration is 1~4 mol/L
Solution adjusts pH value, and the rate of addition of NaOH solution is controlled in 0.5~2mL/min, molten until mixing by progressively testing pH value
The pH=7 of liquid；
Step 2, at normal temperatures, by glass container by 2mmol citric acid and 2mmol Na [Al (OH)4] be added to from
In sub- water, its compound concentration is set to be 0.2~1 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
30~60min, generate solution B；
Step 3, at normal temperatures, described solution A is added dropwise in described solution B by new glass container, then uses concentration
The pH value of solution is adjusted for 1~4 mol/L NaOH solution, the rate of addition of NaOH solution is controlled in 0.5~2mL/min, led to
Cross and progressively test pH value until the pH=7 of solution, then proceed to 30~60min of stirring, obtain solution C；
Step 4, under 70~100oC heating-up temperature, by solution C 4~15h of water-bath, electric stirring is used during water-bath
Device stirs, and rotating speed control is 30~90rpm, obtains presoma D；
Step 5, under 120~160oC heating-up temperatures, presoma D is dried, drying time control is 6~12h, is obtained after grinding
Presoma E；
Step 6, at normal temperatures, presoma E is cleaned 3~5 times repeatedly with deionized water, removes the Na in presoma E+And Al3+
Ion, then under 60~120 °C of heating-up temperatures, 12~24h of drying obtains presoma F；
Step 7, in air atmosphere, presoma F is calcined into 2~7h under 315~370 °C, obtains β-Bi2O3Powder；
Step 8, by a certain amount of β-Bi2O3Powder is put into vacuum tube furnace, after vacuumizing, is passed through N2, maintain N2Partial pressure
For 1 atmospheric pressure, be heat-treated 2~9 hours under 200~350 °C, obtain the β with strong visible absorption ability of black-
Bi2O3Powder.
2. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 1：HNO3The concentration of solution is 1~4 mol/L, and the concentration of citric acid solution is 0.2~1 mol/L, and magnetic force stirs
The time mixed is 30~60min, and the concentration of NaOH solution is 1~4 mol/L, and the rate of addition of NaOH solution is 0.5~2mL/
Min, pH value=7 of solution.
3. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, its feature exist
In in the step 2：The concentration of citric acid solution is 0.2~1 mol/L, Na [Al (OH)4] solution concentration be 0.2~1
Mol/L, mixing time are 30~60min.
4. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 3：The concentration of NaOH solution is 1~4 mol/L, and the rate of addition of NaOH solution is 0.5~2mL/min, solution
PH value be 7, mixing time is 30~60min.
5. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 4：Bath temperature is 70~100oC, and water bath time is 4~15h, and mixing speed is 30~90rpm.
6. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 5：Drying temperature is 120~160oC, and drying time is 6~12h.
7. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 6：Presoma E deionized waters wash number is 3~5 times, and drying temperature is 60~120 °C, and drying time is
12~24h.
8. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 7：Presoma F calcining heat is 315~370 °C, and calcination time is 2~7h.
9. the beta process for preparing bismuth oxide according to claim 1 with strong visible absorption ability, it is characterised in that
In the step 8：N2Partial pressure be 1 atmospheric pressure, heat treatment temperature is 200~350 °C, and heat treatment time is 2~9 h.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354840A (en) * | 2019-08-02 | 2019-10-22 | 重庆大学 | It is a kind of to prepare β-Bi2O3/BiVO4The new method of composite photocatalyst material |
| CN113651358A (en) * | 2020-10-21 | 2021-11-16 | 上海紫迈纳米科技有限公司 | Method for preparing high-purity superfine bismuth oxide |
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| CN106582758A (en) * | 2016-12-17 | 2017-04-26 | 齐齐哈尔大学 | Preparation of hierarchical nanostructure Bi2O3/(BiO)2CO3 |
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| 高家诚等: "N2气氛热处理对纳米TiO2可见光吸收性能的影响", 《功能材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354840A (en) * | 2019-08-02 | 2019-10-22 | 重庆大学 | It is a kind of to prepare β-Bi2O3/BiVO4The new method of composite photocatalyst material |
| CN110354840B (en) * | 2019-08-02 | 2021-06-29 | 重庆大学 | Preparation of beta-Bi2O3/BiVO4Method for preparing composite photocatalytic material |
| CN113651358A (en) * | 2020-10-21 | 2021-11-16 | 上海紫迈纳米科技有限公司 | Method for preparing high-purity superfine bismuth oxide |
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