CN110711586B - Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst - Google Patents
Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst Download PDFInfo
- Publication number
- CN110711586B CN110711586B CN201911023230.9A CN201911023230A CN110711586B CN 110711586 B CN110711586 B CN 110711586B CN 201911023230 A CN201911023230 A CN 201911023230A CN 110711586 B CN110711586 B CN 110711586B
- Authority
- CN
- China
- Prior art keywords
- solution
- reaction solution
- bismuth
- reaction
- iron oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 34
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 32
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000243 solution Substances 0.000 claims abstract description 89
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 62
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000005457 ice water Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- YDADSACUMGYURZ-UHFFFAOYSA-N [O-2].[Fe+2].[Bi+3] Chemical compound [O-2].[Fe+2].[Bi+3] YDADSACUMGYURZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 229910000416 bismuth oxide Inorganic materials 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 abstract description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000004729 solvothermal method Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 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 6
- 229940012189 methyl orange Drugs 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002835 absorbance 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
- 239000003054 catalyst Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—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
- B01J35/33—Electric or magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
A low-temperature preparation method of a magnetic bismuth-containing iron oxide photocatalyst belongs to the technical field of preparation of magnetic photocatalyst materials. The invention aims to solve the problem of recycling of the existing bismuth-containing photocatalyst. The invention directly uses Bi (NO) by a solvothermal method 3 ) 3 Solution, Fe (NO) 3 ) 3 Solution and NaBH 4 The solution and NaOH aqueous solution are used for preparing the magnetic bismuth-containing iron oxide photocatalyst. The preparation method compounds bismuth and ferric oxide with photocatalysis effect to have magnetism, so that the photocatalyst can be recycled under the action of an external electric field, can be recycled, is environment-friendly and reduces the cost. The preparation method has the advantages of short preparation time and relatively low preparation temperature, and saves the preparation cost. The photocatalyst prepared by the invention has uniform microstructure, good photocatalytic stability and high magnetic permeability.
Description
Technical Field
The invention relates to a low-temperature preparation method of a magnetic bismuth-containing iron oxide photocatalyst, belonging to the technical field of preparation of magnetic photocatalyst materials.
Background
The magnetic material is a substance capable of directly or indirectly generating magnetism from transition elements such as iron, cobalt, nickel, and alloys thereof. Ferromagnetic substances and ferrimagnetic substances are ferromagnetic substances, and magnetic materials are generally called ferromagnetic substances and are functional materials with wide ancient and dual purposes. Modern magnetic materials have been widely used and play an important role in the traditional and emerging fields of electronics, computers, information communication, medical treatment, aerospace, automobiles, wind power and the like.
The photocatalysis technology is regarded as a high-efficiency and green technical method due to the advantages of few intermediate products, energy conservation, simple use process, no secondary pollution and the like. The metal bismuth is a photocatalyst applied to a photocatalytic technology, and can be recycled as a catalyst, so that the provision of a recyclable magnetic bismuth-containing photocatalyst is necessary.
Disclosure of Invention
The invention provides a low-temperature preparation method of a magnetic bismuth-containing iron oxide photocatalyst, aiming at solving the problem of recycling of the existing bismuth-containing photocatalyst.
The technical scheme of the invention is as follows:
a low-temperature preparation method of a magnetic bismuth-containing iron oxide photocatalyst comprises the following operation steps:
step 1, dissolving Bi (NO) by using ethylene glycol 3 ) 3 ·5H 2 O to obtain Bi (NO) with the mass fraction of 4.3% 3 ) 3 Solution of Fe (NO) dissolved in deionized water 3 ) 3 ·5H 2 O obtains 5 to 30 mass percent of Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solutions to prepare a reaction solution A;
step 2, dissolving NaBH by using deionized water 4 Obtaining NaBH with the mass fraction of 9 to 18.5 percent 4 Solution, then to NaBH 4 Adding 10% NaOH aqueous solution in mass fraction into the solution to obtain reaction solution B;
step 3, dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2-3 h, and obtaining a reaction solution C;
and 4, placing the reaction solution C in a reaction kettle, cooling to room temperature after the heating reaction is finished, centrifuging, removing supernate, drying and grinding to obtain the bismuth-containing iron oxide composite magnetic material.
Preferably: bi (NO) in said step 1 3 ) 3 Solution with Fe (NO) 3 ) 3 The volume ratio of the solution was 5: 1.
Preferably: and in the step 3, dropwise adding the reaction solution B into the reaction solution A under the ice-water bath condition.
Preferably: NaBH in the step 2 4 The volume ratio of the solution to the aqueous NaOH solution was 5: 1.
Preferably: the specific operation process of the step 4 is as follows: and (3) placing the reaction solution C into a reaction kettle, placing the reaction kettle into a box-type resistance heating furnace, preserving the temperature at 180 ℃ for 12-24 h to complete heating reaction, naturally cooling to room temperature, performing solid-liquid separation by using a centrifugal machine, removing supernatant, drying and grinding to obtain the bismuth iron oxide composite magnetic material.
Most preferably: the drying is carried out by using a forced air drying oven or a vacuum drying oven.
The invention has the following beneficial effects: the invention utilizes the solvothermal method to prepare the magnetic bismuth-containing iron oxide photocatalyst, has the advantages of short preparation time and relatively low preparation temperature, and saves the preparation cost. The photocatalyst prepared by the method has magnetism by compounding bismuth and ferric oxide with photocatalysis, can be recycled under the action of an external electric field, can be recycled, and reduces the cost while being environment-friendly. The photocatalyst prepared by the invention has uniform microstructure, good photocatalytic stability and high magnetic permeability.
Drawings
FIG. 1 is an SEM photograph of embodiment 1;
FIG. 2 is a hysteresis loop of a magnetic bismuth-containing iron oxide photocatalyst made in accordance with the present application;
FIG. 3 is a graph of the photocatalytic efficiency of magnetic bismuth-containing iron oxide photocatalysts made according to the present application;
fig. 4 is an SEM photograph of elemental bismuth.
Detailed Description
The experimental procedures used in the following examples are conventional unless otherwise specified.
Embodiment mode 1: preparation of magnetic bismuth-containing iron oxide photocatalyst (i)
(1) 2.4g of Bi (NO) were dissolved in 50ml of ethylene glycol solvent 3 ) 3 ·5H 2 O to Bi (NO) 3 ) 3 Solution 0.5g Fe (NO) dissolved in 50ml deionized water 3 ) 3 ·5H 2 O to Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solution in an ice water bath to prepare a reaction solution A;
(2) 0.902g of NaBH was dissolved using 10ml of deionized water 4 Obtaining NaBH 4 Solution, then to NaBH 4 Adding 0.095g of NaOH aqueous solution with the mass fraction of 2% into the solution to obtain reaction solution B;
(3) dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2 hours, so as to obtain a reaction solution C;
(4) and (3) placing the reaction solution C into a reaction kettle, placing the reaction kettle into a box-type resistance heating furnace, preserving the temperature for 12 hours at 180 ℃ to complete heating reaction, naturally cooling to room temperature, performing solid-liquid separation by using a centrifugal machine, removing supernatant, washing powder with water and alcohol for three times, drying by using an air blast drying oven, and grinding to obtain the magnetic bismuth-containing iron oxide photocatalyst (i).
Embodiment mode 2: preparation of magnetic bismuth-containing iron oxide photocatalyst (ii)
(1) 2.4g of Bi (NO) were dissolved in 50ml of ethylene glycol solvent 3 ) 3 ·5H 2 O to Bi (NO) 3 ) 3 Solution 1g of Fe (NO) dissolved in 50ml of deionized water 3 ) 3 ·5H 2 O to Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solution in an ice water bath to prepare a reaction solution A;
(2) 1.092g of NaBH was dissolved using 10ml of deionized water 4 Obtaining NaBH 4 Solution, then to NaBH 4 Adding NaOH with the mass of 0.115g into the solution2% NaOH aqueous solution to obtain a reaction solution B;
(3) dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2 hours, so as to obtain a reaction solution C;
(4) and (3) placing the reaction solution C into a reaction kettle, placing the reaction kettle into a box-type resistance heating furnace, preserving the temperature at 180 ℃ for 12h to complete heating reaction, naturally cooling to room temperature, performing solid-liquid separation by using a centrifugal machine, removing supernatant, washing powder with water and alcohol for three times, drying by using an air blast drying oven, and grinding to obtain the magnetic bismuth-containing iron oxide photocatalyst (ii).
Embodiment mode 3: preparation of magnetic bismuth-containing iron oxide photocatalyst (iii)
(1) 2.4g of Bi (NO) were dissolved in 50ml of ethylene glycol solvent 3 ) 3 ·5H 2 O to Bi (NO) 3 ) 3 Solution 2g of Fe (NO) dissolved in 50ml of deionized water 3 ) 3 ·5H 2 O to Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solution in an ice water bath to prepare a reaction solution A;
(2) 1.472g of NaBH dissolved in 10ml of deionized water 4 Obtaining NaBH 4 Solution, then to NaBH 4 Adding NaOH aqueous solution with the mass fraction of 2% and the mass of 0.155g of NaOH into the solution to obtain reaction solution B;
(3) dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2 hours, so as to obtain a reaction solution C;
(4) and (3) placing the reaction solution C into a reaction kettle, placing the reaction kettle into a box-type resistance heating furnace, preserving the temperature for 12 hours at 180 ℃ to complete heating reaction, naturally cooling to room temperature, performing solid-liquid separation by using a centrifugal machine, removing supernatant, washing powder with water and alcohol for three times, drying by using an air blast drying oven, and grinding to obtain the magnetic bismuth-containing iron oxide photocatalyst (iii).
Embodiment mode 4: preparation of magnetic bismuth-containing iron oxide photocatalyst (iiii)
(1) 2.4g of a solution of 2.4g in 50ml of ethylene glycol solventBi(NO 3 ) 3 ·5H 2 O to Bi (NO) 3 ) 3 Solution 3g of Fe (NO) dissolved in 50ml of deionized water 3 ) 3 ·5H 2 O to Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solution in an ice water bath to prepare a reaction solution A;
(2) 1.852g of NaBH dissolved in 10ml of deionized water 4 Obtaining NaBH 4 Solution, then to NaBH 4 Adding NaOH aqueous solution with the mass fraction of 2% and the mass of 0.195g of NaOH into the solution to obtain reaction solution B;
(3) dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2 hours, so as to obtain a reaction solution C;
(4) and (3) placing the reaction solution C into a reaction kettle, placing the reaction kettle into a box-type resistance heating furnace, preserving the temperature for 12 hours at 180 ℃ to complete heating reaction, naturally cooling to room temperature, performing solid-liquid separation by using a centrifugal machine, removing supernatant, washing powder with water and alcohol for three times, drying by using an air blast drying oven, and grinding to obtain the magnetic bismuth-containing iron oxide photocatalyst (iiii).
A scanning electron microscope test was performed on the magnetic bismuth-containing iron oxide photocatalyst (i) obtained in embodiment 1 to obtain an SEM photograph as shown in fig. 1. As can be seen from the comparison of the SEM photographs of the elemental bismuth in fig. 1 and 4, the magnetic bismuth-containing iron oxide photocatalyst (i) prepared in embodiment 1 uniformly grows iron oxide on the flaky bismuth.
As shown in fig. 2, the results of the measurement of the high-precision hysteresis loop of the magnetic bismuth-containing iron oxide photocatalysts (i), (ii), (iii) and (iiii) obtained in embodiments 1, 2, 3 and 4, respectively, using a hysteresis loop measuring instrument, are shown in fig. 2, and it can be seen from fig. 2 that the hysteresis loops of the photocatalysts (i), (ii), (iii) and (iiii) are narrow and steep, the magnetization process is nearly reversible, the hysteresis loss is small, the magnetic permeability is high, and the low coercive force magnetic induction strengths are 9.923T, 133.139T, 70.32T and 7.997T, respectively. These results show that as the content of iron oxide increases, the magnetic properties of the composite material increase and then decrease, and the photocatalytic effect also gradually decreases as the content of iron oxide increases.
A photocatalytic efficiency test experiment was performed on the magnetic bismuth-containing iron oxide photocatalyst (i) prepared in embodiment 1, and the specific experimental procedure was to add the prepared composite material to 100ml of methyl orange with a concentration of 30mg/L, magnetically stir the mixture under the irradiation of visible light, centrifuge 5ml of the solution every half hour, and measure the absorbance of the methyl orange using a spectrophotometer, and the test results are shown in fig. 3. As can be seen from FIG. 3, after 30 minutes of photocatalysis, the degradation of the material to methyl orange is obvious, which is the combined action of bismuth degradation of methyl orange and iron oxide adsorption of methyl orange, and the degradation efficiency of the material to methyl orange tends to be stable after 30 minutes.
Claims (2)
1. A low-temperature preparation method of a magnetic bismuth-containing iron oxide photocatalyst is characterized by comprising the following steps: the method comprises the following steps:
step 1, dissolving Bi (NO) by using ethylene glycol 3 ) 3 ·5H 2 O to obtain Bi (NO) with the mass fraction of 4.3% 3 ) 3 Solution of Fe (NO) dissolved in deionized water 3 ) 3 ·5H 2 O obtains 5 to 30 mass percent of Fe (NO) 3 ) 3 A solution; then Bi (NO) 3 ) 3 Solution and Fe (NO) 3 ) 3 Mixing the solutions to prepare a reaction solution A;
bi (NO) in said step 1 3 ) 3 Solution with Fe (NO) 3 ) 3 The volume ratio of the solution is 5: 1;
step 2, dissolving NaBH by using deionized water 4 Obtaining NaBH with the mass fraction of 9 to 18.5 percent 4 Solution, then to NaBH 4 Adding 10% NaOH aqueous solution in mass fraction into the solution to obtain reaction solution B;
NaBH in the step 2 4 The volume ratio of the solution to the NaOH aqueous solution is 5: 1;
step 3, dropwise adding the reaction solution B into the reaction solution A while stirring, wherein the dropwise adding stirring time is 2-3 h, and obtaining a reaction solution C;
the process of dropwise adding the reaction solution B into the reaction solution A to obtain the reaction solution C in the step 3 is carried out under the ice-water bath condition;
and 4, placing the reaction solution C in a reaction kettle, preserving the temperature at 180 ℃ for 12-24 hours to complete the heating reaction, cooling to room temperature after the heating reaction is completed, performing solid-liquid separation by using a centrifugal machine, discarding supernatant, drying and grinding to obtain the bismuth iron oxide composite magnetic material.
2. The method of claim 1, wherein the method comprises the steps of: the drying is carried out by using a forced air drying oven or a vacuum drying oven.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911023230.9A CN110711586B (en) | 2019-10-25 | 2019-10-25 | Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911023230.9A CN110711586B (en) | 2019-10-25 | 2019-10-25 | Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110711586A CN110711586A (en) | 2020-01-21 |
CN110711586B true CN110711586B (en) | 2022-08-12 |
Family
ID=69214354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911023230.9A Active CN110711586B (en) | 2019-10-25 | 2019-10-25 | Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110711586B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115433368A (en) * | 2022-09-27 | 2022-12-06 | 中国五冶集团有限公司 | Preparation method and experimental method of metal organic framework photocatalytic material |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104707594A (en) * | 2015-03-19 | 2015-06-17 | 西南大学 | Bi/Aurivillius type oxide composite material as well as preparation method and application thereof |
CN104941662A (en) * | 2015-06-15 | 2015-09-30 | 桂林理工大学 | Preparation method of Ag/BFeO3 compound photocatalyst |
CN105452169A (en) * | 2013-08-05 | 2016-03-30 | 耶路撒冷希伯来大学伊萨姆研究开发有限公司 | Zeolite, and production method and use therefor |
CN105772051A (en) * | 2016-04-18 | 2016-07-20 | 河南师范大学 | Bi2O2CO3-BiFeO3 compound photocatalyst and preparing method thereof |
CN105903474A (en) * | 2016-05-12 | 2016-08-31 | 江苏华夏制漆科技有限公司 | Preparation method of magnetic Fe3O4@ elemental bismuth sphere photocatalyst |
CN109250755A (en) * | 2018-09-14 | 2019-01-22 | 重庆工商大学 | A kind of bismuth oxide photocatalyst and preparation method thereof of the different crystal phases containing bismuth defect |
CN109289859A (en) * | 2018-10-09 | 2019-02-01 | 沈阳工业大学 | Co3O4/BiFeO3The preparation method of heterojunction photocatalyst and its application in reduction of hexavalent chromium |
-
2019
- 2019-10-25 CN CN201911023230.9A patent/CN110711586B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105452169A (en) * | 2013-08-05 | 2016-03-30 | 耶路撒冷希伯来大学伊萨姆研究开发有限公司 | Zeolite, and production method and use therefor |
CN104707594A (en) * | 2015-03-19 | 2015-06-17 | 西南大学 | Bi/Aurivillius type oxide composite material as well as preparation method and application thereof |
CN104941662A (en) * | 2015-06-15 | 2015-09-30 | 桂林理工大学 | Preparation method of Ag/BFeO3 compound photocatalyst |
CN105772051A (en) * | 2016-04-18 | 2016-07-20 | 河南师范大学 | Bi2O2CO3-BiFeO3 compound photocatalyst and preparing method thereof |
CN105903474A (en) * | 2016-05-12 | 2016-08-31 | 江苏华夏制漆科技有限公司 | Preparation method of magnetic Fe3O4@ elemental bismuth sphere photocatalyst |
CN109250755A (en) * | 2018-09-14 | 2019-01-22 | 重庆工商大学 | A kind of bismuth oxide photocatalyst and preparation method thereof of the different crystal phases containing bismuth defect |
CN109289859A (en) * | 2018-10-09 | 2019-02-01 | 沈阳工业大学 | Co3O4/BiFeO3The preparation method of heterojunction photocatalyst and its application in reduction of hexavalent chromium |
Non-Patent Citations (6)
Title |
---|
"Bi2Fe4O9的制备与光催化性能分析";姬磊等;《东北石油大学学报》;20160630;第40卷(第3期);第98页第1.2节 * |
"Visible Light Photocatalytic Activity of Bismuth Ferrites Tuned by Bi/Fe Ratio";Huanchun Wang et al.;《Rapid Communications of the American Ceramic Society》;20160401;第99卷(第4期);第1133-1136页 * |
"铁酸铋光催化性能的改性研究";邸丽景;《中国博士学位论文全文数据库 工程科技I辑》;20190815(第8期);B014-250 * |
Bi/BiOCOOH复合光催化剂的制备及其可见光催化性能;丁志刚等;《重庆大学学报》;20181015(第10期);第57-64页 * |
Bi/Fe催化硼氢化钠还原水中对硝基苯酚;周颖梅等;《科学技术与工程》;20160418(第11期);第4-7+37页 * |
水热法可控制备铋铁系化合物材料;李波等;《无机化学学报》;20091010(第10期);第157-161页 * |
Also Published As
Publication number | Publication date |
---|---|
CN110711586A (en) | 2020-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016141625A1 (en) | Method for preparing neodymium-iron-boron magnet by utilizing waste material and neodymium-iron-boron magnet | |
CN104550940B (en) | The method of a kind of soft magnetic ferrite cladding metallic magnetic powder and soft-magnetic composite material preparation method thereof | |
CN107671280B (en) | A kind of york-shell structure C oNi@TiO2Nanosphere and preparation method thereof | |
CN110970170B (en) | Preparation method of FeTeSe polycrystalline superconductor | |
CN112071615A (en) | Preparation method for improving magnetic property of strontium ferrite pre-sintered material | |
CN102184776A (en) | Preparation method of rare earth complex crystal boundary modification sintered neodymium-iron-boron magnetic body | |
CN110711586B (en) | Low-temperature preparation method of magnetic bismuth-containing iron oxide photocatalyst | |
CN110504077A (en) | A kind of Nd-Fe-B permanent magnet material and preparation method thereof | |
CN103420428A (en) | Preparation method of magnesium ferrite nano-particles | |
CN113024237B (en) | Preparation method of magnetic nano composite material | |
CN107721405B (en) | Preparation of M-type strontium ferrite SrFe through low-temperature calcination12O19Method for pre-firing materials | |
CN112735721B (en) | High-frequency low-loss composite soft magnetic material and preparation method and application thereof | |
CN104843802B (en) | The preparation method of a kind of micrometer sized superparamagnetic Z 250 microballoon | |
CN101106005A (en) | High saturation magnetization intensity, low coercivity hexad ferrite material preparation method | |
CN105271443A (en) | Method for preparing flaky nano CoO or Co3O4 through assistant microwave heating | |
CN109550973B (en) | Preparation method of AlNiCo/SmCo composite magnetic powder, magnetic powder and magnet | |
CN105439208A (en) | Method for preparing permanent magnet strontium ferrite by utilizing iron oxide red | |
CN111302783A (en) | Production method and use method of permanent magnetic ferrite for low-noise permanent magnet motor | |
CN111081466A (en) | Amorphous nanocrystalline soft magnetic composite material and preparation method and application thereof | |
CN102757230B (en) | Method for preparing strontium-zinc-iron ternary composite magnetic material | |
CN107021520B (en) | A kind of yttrium oxide powder and preparation method thereof | |
CN109231979A (en) | A method of Conjugate ferrite magnetostriction materials are prepared by raw material of waste and old lithium ion battery | |
CN105174933A (en) | Preparation method for soft magnetic ferrite with high saturation magnetic induction strength and high magnetic permeability | |
CN115784189A (en) | Method for preparing lithium iron phosphate electrode material under hydrothermal magnetic field synergistic effect | |
GB739069A (en) | Improvements in or relating to methods of manufacturing magnetic ferrites |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Jin Xinxin Inventor after: Li Xiaoyue Inventor before: Li Xiaoyue Inventor before: Jin Xinxin |