CN107824179A - A kind of preparation method of highlight catalytic active beta bismuth oxide - Google Patents
A kind of preparation method of highlight catalytic active beta bismuth oxide Download PDFInfo
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- CN107824179A CN107824179A CN201710998691.2A CN201710998691A CN107824179A CN 107824179 A CN107824179 A CN 107824179A CN 201710998691 A CN201710998691 A CN 201710998691A CN 107824179 A CN107824179 A CN 107824179A
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- 229910000416 bismuth oxide Inorganic materials 0.000 title claims abstract description 32
- 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 32
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 35
- 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 29
- 238000001035 drying Methods 0.000 claims abstract description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 238000001354 calcination Methods 0.000 claims abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 75
- 239000000243 solution Substances 0.000 claims description 63
- 238000003756 stirring Methods 0.000 claims description 18
- 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 12
- 235000015165 citric acid Nutrition 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002243 precursor Substances 0.000 claims description 11
- 238000013019 agitation Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 5
- 125000001967 indiganyl group Chemical group [H][In]([H])[*] 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 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
- 239000001632 sodium acetate Substances 0.000 abstract 1
- 235000017281 sodium acetate Nutrition 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 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 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000004408 titanium dioxide 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
- B01J23/18—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/038—Precipitation; Co-precipitation to form slurries or suspensions, e.g. a washcoat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of preparation method of highlight catalytic active beta bismuth oxide.Bismuth oxide has visible light-responded ability, but bismuth oxide be there are problems that in catalytic applications are closed, and the light absorpting ability such as bismuth oxide is not strong, causes photocatalytic activity relatively low, and its relatively low photocatalytic activity, which is difficult to reach, meets actual demand.It is as follows the step of the preparation method of highlight catalytic active beta bismuth oxide in the present invention：Solution containing bismuth nitrate, nitric acid and citric acid is mixed with the solution containing acetic acid and sodium acetate, by adjusting pH value, water-bath, drying, grinding, washing, air atmosphere calcining and H2Highlight catalytic active beta bismuth oxide powder is obtained after being heat-treated under atmosphere.The present invention is easily achieved industrialization, product visible absorption ability is strong, photocatalytic activity is high.
Description
Technical field
The present invention relates to a kind of preparation method of highlight catalytic active beta bismuth oxide, applied to depollution of environment field.
Background technology
Photocatalitic Technique of Semiconductor has boundless application prospect in degraded organic pollutants etc., and gradual
One of heat subject as research.Titanium dioxide（TiO2, band gap is 3.2 eV）And zinc oxide（ZnO, band gap are
3.4 eV）Deng only having ultraviolet light response ability, and bismuth oxide has visible light-responded ability.Bismuth oxide is increasingly becoming in recent years
The study hotspot of novel photocatalyst development field.Yan etc. is with Bi (NO3)3•5H2O primary raw materials, by hydro-thermal method synthesized β-
Bi2O3(Journal of Alloys and Compounds, 2014,605：102-108), disclosed in patent CN104826623B
A kind of bismuth oxide photocatalyst and its preparation method and application, has obtained nano flower-like beta oxidation bismuth visible light catalyst.On
State document and patent all Successful utilization hydro-thermal methods and prepare beta oxidation bismuth nano material.β-Bi at present2O3In photocatalysis field internal memory
In problem, as visible absorption is indifferent, cause quantum efficiency relatively low, and relatively low photocatalytic activity is difficult to reach satisfaction
Actual demand.Therefore, it is necessary to further develop the strong β-Bi of visible light-responded ability2O3。
The content of the invention
It is an object of the invention to provide a kind of preparation method of highlight catalytic active beta bismuth oxide.
Above-mentioned purpose is realized by following technical scheme：
A kind of preparation method of highlight catalytic active beta bismuth oxide, 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 mixed solution, the magnetic force in course of dissolution for 0.2~2 mol/L citric acids
Stirring, after above-mentioned chemical substance is completely dissolved, continues 30~90min 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 0.5~3mL/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 0.2~2 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue
Stop after 30~90min of stirring.
Step 3, at normal temperatures, solution made from step 1 is added dropwise into described step 2 by new glass container to be made
Solution in, then with concentration be 1~4 mol/L NaOH solution adjust solution pH value, NaOH solution rate of addition control
In 0.5~2mL/min, until the pH=7 of solution, continue 30~90min of stirring, then under 70~100oC heating-up temperature
Stop after 4~15h of water-bath, stirred during water-bath using electric mixer, rotating speed control is 20~90rpm.
Step 4, under 120~160oC heating-up temperatures, viscous solution made from baking step 3, drying time control is 6
~12h, precursor powder is obtained after grinding, at normal temperatures, precursor powder is cleaned 3~5 times repeatedly with deionized water, removed
Na in precursor powder+And Al3+Ion, then under 60~120 °C of heating-up temperatures, dry 12~24h.
Step 5, in air atmosphere, powder made from step 4 is calcined into 2~7h under 315~370 °C, obtain β-
Bi2O3Powder, by a certain amount of β-Bi2O3Powder is put into H2In atmosphere furnace, after vacuumizing, H is passed through2Gas, maintain H2Point
20~100kPa is pressed in, 2~6h is heat-treated under 200~330 °C, obtains highlight catalytic active beta bismuth oxide powder.
Beneficial effect：
1. highlight catalytic active beta bismuth oxide prepared by the present invention, compared with prior art, the invention provides one kind to be easy to
Realize industrialized method.
2. the present invention is figure it is seen that H2Under atmosphere after atmosphere heat treatment beta bismuth oxide, its ABSORPTION EDGE there occurs
One obvious red shift, the purer beta bismuth oxide of light absorpting ability have a more obvious enhancing, it is seen that light absorpting ability
Enhancing, which improves, produces light induced electron and the probability in hole in photochemical catalyst, promote the increase of photocatalysis efficiency.
Brief description of the drawings：
Accompanying drawing 1 is that highlight catalytic active beta bismuth oxide X-ray diffraction made from the embodiment of the present invention 1 contrasts collection of illustrative plates.
Accompanying drawing 2 is the optical absorption map of highlight catalytic active beta bismuth oxide made from the embodiment of the present invention 1.
Embodiment：
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.
Embodiment 1：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 1.5 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 30min, then adjust pH with the NaOH solution that concentration is 1.5 mol/L
Value, 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
Stop after 30~90min
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 1.5 mol/L NaOH solution, the rate of addition control of NaOH solution is in 2mL/min, until solution
PH=7, then proceed to stir 30min, rotating speed control be 30rpm.
Step 4, under 120oC heating-up temperatures, viscous solution made from baking step 3, drying time control is 12h, is ground
Precursor powder is obtained after mill, at normal temperatures, precursor powder is cleaned 3 times repeatedly with deionized water, then in 80 °C of heating
At a temperature of, dry 14h.
Step 5, in air atmosphere, powder made from step 4 is calcined into 3h under 355 °C, obtains β-Bi2O3Powder, will
A certain amount of β-Bi2O3Powder is put into H2In atmosphere furnace, after vacuumizing, H is passed through2Gas, maintain H2Partial pressure in 40kPa,
It is heat-treated 5 hours under 240 °C, obtains highlight catalytic active beta bismuth oxide powder.In the experiment of photocatalytic water degraded methyl orange,
The catalytic performance of highlight catalytic active beta bismuth oxide is 4.3 times of beta bismuth oxide.
Embodiment 2：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 2.5 mol/L's that O, which is dissolved in concentration,
HNO3In solution, then add concentration and formed to mix for 1.5 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 30min, then adjust pH with the NaOH solution that concentration is 2.5 mol/L
Value, the rate of addition control of NaOH solution is in 1mL/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 1.5 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
Stop after 50min
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 2.5 mol/L NaOH solution, the rate of addition control of NaOH solution is in 1mL/min, until solution
PH=7, then proceed to stir 50min, rotating speed control be 30rpm.
Step 4, under 140oC heating-up temperatures, viscous solution made from baking step 3, drying time control is 10h, is ground
Precursor powder is obtained after mill, at normal temperatures, precursor powder is cleaned 3 times repeatedly with deionized water, then in 80 °C of heating
At a temperature of, dry 14h.
Step 5, in air atmosphere, powder made from step 4 is calcined into 3h under 355 °C, obtains β-Bi2O3Powder, will
A certain amount of β-Bi2O3Powder is put into H2In atmosphere furnace, after vacuumizing, H is passed through2Gas, maintain H2Partial pressure in 50kPa,
It is heat-treated 4 hours under 260 °C, obtains highlight catalytic active beta bismuth oxide powder.
Embodiment 3：
Step 1, at normal temperatures, by glass container by 5.145 grams of Bi (NO3)3•5H2It is 2.5 mol/L's that O, which is dissolved in concentration,
HNO3In solution, then add concentration and formed to mix for 1.5 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 30min, then adjust pH with the NaOH solution that concentration is 2.5 mol/L
Value, the rate of addition control of NaOH solution is in 1mL/min, by progressively testing pH value until the pH=7 of mixed solution.
Step 2, at normal temperatures, by glass container by citric acid and Na [Al (OH)4] be added in deionized water, make it
Compound concentration is 1.5 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continues to stop after stirring 50min
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 2.5 mol/L NaOH solution, the rate of addition control of NaOH solution is in 1mL/min, until solution
PH=7, then proceed to stir 50min, rotating speed control be 30rpm.
Step 4, under 140oC heating-up temperatures, viscous solution made from baking step 3, drying time control is 10h, is ground
Precursor powder is obtained after mill, at normal temperatures, precursor powder is cleaned 3 times repeatedly with deionized water, then in 80 °C of heating
At a temperature of, dry 14h.
Step 5, in air atmosphere, powder made from step 4 is calcined into 3h under 355 °C, obtains β-Bi2O3Powder, will
A certain amount of β-Bi2O3Powder is put into H2In atmosphere furnace, after vacuumizing, H is passed through2Gas, maintain H2Partial pressure in 60kPa,
It is heat-treated 4 hours under 260 °C, obtains highlight catalytic active beta bismuth oxide powder.
Above said content is only the basic explanation under present inventive concept, by reading description of the invention and to the present invention
Any equivalent conversion that technical scheme is taken, all should belong to protection scope of the present invention.
Claims (6)
1. a kind of preparation method of highlight catalytic active beta bismuth oxide, 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 0.2~2 mol/L citric acids
Stirring, after above-mentioned chemical substance is completely dissolved, continues 30~90min 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 0.5~3mL/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 0.2~2 mol/L, while magnetic agitation, after solution to be mixed is completely dissolved, continue to stir
Stop after 30~90min；
Step 3, at normal temperatures, solution made from step 1 is added dropwise to by new glass container molten made from described step 2
In liquid, then the pH value with the NaOH solution adjustment solution that concentration is 1~4 mol/L, the rate of addition of NaOH solution are controlled 0.5
~2mL/min, until the pH=7 of solution, continue 30~90min of stirring, the then water-bath 4 under 70~100oC heating-up temperature
Stop after~15h, stirred during water-bath using electric mixer, rotating speed control is 20~90rpm；
Step 4, under 120~160oC heating-up temperatures, viscous solution made from baking step 3, drying time control for 6~
12h, precursor powder is obtained after grinding, at normal temperatures, precursor powder is cleaned 3~5 times, before removal repeatedly with deionized water
Drive the Na in body powder+Ion, then under 60~120 °C of heating-up temperatures, dry 12~24h；
Step 5, in air atmosphere, powder made from step 4 is calcined into 2~7h under 315~370 °C, obtains β-Bi2O3Powder
End, by a certain amount of β-Bi2O3Powder is put into H2In atmosphere furnace, after vacuumizing, H is passed through2Gas, maintain H2Partial pressure 20~
100kPa, 2~6h is heat-treated under 200~330 °C, obtains highlight catalytic active beta bismuth oxide powder.
2. the preparation method of highlight catalytic active beta bismuth oxide according to claim 1, it is characterised in that the step
In 1：HNO3The concentration of solution is 1~4 mol/L, and the concentration of citric acid solution is 0.2~2 mol/L, the time of magnetic agitation
For 30~90min, the concentration of NaOH solution is 1~4 mol/L, and the rate of addition of NaOH solution is 0.5~2mL/min.
3. the preparation method of highlight catalytic active beta bismuth oxide according to claim 1, it is characterised in that the step
In rapid 2：The concentration of citric acid solution is 0.2~2 mol/L, Na [Al (OH)4] concentration of solution is 0.2~2 mol/L, stirring
Time is 30~90min, and the concentration of NaOH solution is 1~4 mol/L, and the rate of addition of NaOH solution is 0.5~2mL/min,
Mixing time is 30~90min.
4. the preparation method of highlight catalytic active beta bismuth oxide according to claim 1, it is characterised in that the step
In 3：1~4 mol/L NaOH solution rate of addition is 0.5~2mL/min, and bath temperature is 70~100oC, and water bath time is
4~15h, mixing speed are 20~90rpm.
5. the preparation method of highlight catalytic active beta bismuth oxide according to claim 1, it is characterised in that the step
In 4：Drying temperature is 120~160oC, and drying time is 6~12h.
6. the preparation method of highlight catalytic active beta bismuth oxide according to claim 1, it is characterised in that the step
In 5：Powder calcination atmosphere made from step 4 is air, and calcining heat is 315~370 °C, and calcination time is 2~7h, β-Bi2O3
The heat-treating atmosphere of powder is H2, H2Partial pressure in 20~100kPa, heat treatment temperature is 200~330 °C, heat treatment time 2
~6h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655869A (en) * | 2002-03-25 | 2005-08-17 | 住友钛株式会社 | Titanium oxide-based photocatalyst, manufacturing method therefor and its application |
-
2017
- 2017-10-24 CN CN201710998691.2A patent/CN107824179A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655869A (en) * | 2002-03-25 | 2005-08-17 | 住友钛株式会社 | Titanium oxide-based photocatalyst, manufacturing method therefor and its application |
| US20050227008A1 (en) * | 2002-03-25 | 2005-10-13 | Katsumi Okada | Titanium oxide photocatalyst, process for producing the same and application |
Non-Patent Citations (2)
| Title |
|---|
| LIANWEI SHAN ET AL.: "Band alignment and enhanced photocatalytic activation of α/β-Bi2O3 heterojunctions via in situ phase transformation", 《PAPER》 * |
| 孙奉玉等: "二氧化钛表面光学特性与光催化活性的关系", 《催化学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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