CN110860302A - AgI/LaFeO3/g-C3N4Preparation method of composite photocatalyst - Google Patents
AgI/LaFeO3/g-C3N4Preparation method of composite photocatalyst Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 229910002321 LaFeO3 Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 8
- 229910017771 LaFeO Inorganic materials 0.000 claims abstract description 25
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 238000001354 calcination Methods 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 238000001291 vacuum drying Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 101710134784 Agnoprotein Proteins 0.000 claims description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(III) nitrate Inorganic materials [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- OGJPXUAPXNRGGI-UHFFFAOYSA-N norfloxacin Chemical compound C1=C2N(CC)C=C(C(O)=O)C(=O)C2=CC(F)=C1N1CCNCC1 OGJPXUAPXNRGGI-UHFFFAOYSA-N 0.000 description 8
- 229960001180 norfloxacin Drugs 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003837 high-temperature calcination Methods 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- 239000002060 nanoflake Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- XMEVHPAGJVLHIG-FMZCEJRJSA-N chembl454950 Chemical compound [Cl-].C1=CC=C2[C@](O)(C)[C@H]3C[C@H]4[C@H]([NH+](C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O XMEVHPAGJVLHIG-FMZCEJRJSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229960004989 tetracycline hydrochloride Drugs 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- 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
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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- 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
- B01J27/24—Nitrogen compounds
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- 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
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- 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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- 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
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- 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
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- 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
- C02F2101/34—Organic compounds containing oxygen
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- 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
- C02F2101/38—Organic compounds containing nitrogen
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- 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
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Abstract
The invention relates to AgI/LaFeO3/g‑C3N4A preparation method of a composite photocatalyst belongs to the field of material preparation processes. AgI and LaFeO are mixed3And g-C3N4Drying after ultrasonic oscillation in deionized water. Fully mixed and poured into a crucible, and calcined for a plurality of hours to obtain AgI/LaFeO3/g‑C3N4A composite photocatalyst is provided. The method does not use toxic and harmful organic solvents, uses cheap and easily obtained raw materials, is simple to operate, and is an environment-friendly preparation method.
Description
Technical Field
The invention belongs to the field of material preparation process, and relates to a novel AgI/LaFeO synthesized by an ultrasonic-assisted high-temperature calcination method3/g-C3N4Composite photocatalyst materialAnd (4) preparing the material.
Background
Semiconductor photocatalysts have become an effective means to address global fossil fuel shortages and environmental crisis. The photocatalysis technology can be widely applied by improving the chemical reaction performance of photocatalysis and photoelectrochemistry of the photocatalyst. In recent years, a non-metal visible light driven photocatalyst carbon nitride nano material receives wide attention due to potential application in environmental remediation. In g-C3N4Establishing heterogeneous photocatalysts for substrates is an effective method for improving photocatalytic performance.
To date, no AgI/LaFeO has been found3/g-C3N4The application of the composite photocatalyst material is reported.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of a novel photocatalyst, and the AgI/LaFeO is prepared by adopting an ultrasonic-assisted high-temperature calcination method for the first time3/g-C3N4The composite photocatalyst material can effectively improve the degradation capability of organic pollutants.
The invention has the following inventive concept: using LaFeO3Nanospheres, g-C3N4Good band matching and structural features between nanoflakes and AgI, LaFeO3Nano-microspheres as AgI and g-C3N4The electron transfer carrier forms a double Z-shaped system to form a plane-three-dimensional-plane (AgI-LaFeO)3-g-C3N4) The photoproduction electronic channel greatly strengthens the transfer and separation of photogenerated carriers, so that more photogenerated electrons participate in the reaction, and the catalytic efficiency of the catalyst is strengthened, wherein norfloxacin is a representative antibiotic pollutant selected, and other effective pollutants comprise rhodamine B, methylene blue, tetracycline hydrochloride and the like.
The technical scheme of the invention is as follows:
AgI/LaFeO3/g-C3N4preparing a composite photocatalyst: 1 to 15 weight percent of AgI and 1 to 50 weight percent of LaFeO3And 100 wt% g-C3N4Ultrasonically oscillating in deionized water for 0.5h, and drying in a vacuum drying oven at 160 ℃ until the water completely disappears; the powders are fully mixed and poured into a crucible to be calcined for 5 hours in the air at the temperature of 520 ℃ to obtain AgI/LaFeO3/g-C3N4A composite photocatalyst is provided.
The drying temperature in the invention is 160 ℃, and LaFeO can be avoided at the temperature3Loss of and LaFeO3The nano microspheres have shape defects, and the drying time is preferably 12 hours, so that the complete disappearance of water can be ensured.
In the invention, the calcination condition is 520 ℃, the calcination is carried out for 5h in the air, the temperature is the optimal temperature for forming the crystal face of the composite catalyst, and AgI and LaFeO cannot be caused when the temperature is lower than 520 DEG C3And g-C3N4Combined together, above which temperature results in g-C3N4The calcination time can not be less than 5 hours, and g-C can not be formed after less than 5 hours3N4And (4) nano flakes.
The ultrasonic oscillation time in the invention is preferably 0.5h, and the time below the time can cause incomplete combination of the three raw materials.
Further, LaFeO in the invention3The preparation process comprises the following steps: adding La (NO) according to the mass ratio of 1:1:53)3·6H2O、Fe(NO3)3·9H2Dissolving O and citric acid in deionized water, adding 20ml of ethylene glycol, stirring for 0.5h by intense magnetic force, pouring the mixed solution into a polytetrafluoroethylene reaction kettle, heating for 12h at 160 ℃ in a vacuum drying oven, washing the obtained particles for several times by deionized water and absolute ethyl alcohol, drying for 12h at 80 ℃ in the vacuum drying oven, and calcining for 2h at 800 ℃ to obtain LaFeO3。
Further, g-C in the present invention3N4The preparation process comprises the following steps: putting a proper amount of melamine into a ceramic crucible,
calcining for 5h in air with cover at 520 deg.C (programmed temperature 2 deg.C/min), then opening the cover at 520 deg.C (programmed temperature 2 deg.C/min), calcining for 2h in air with cover opening to obtain g-C3N4。
The preparation process of AgI is as follows: mixing KI and AgNO with equal molar mass3Adding deionized waterAnd after fully stirring, filtering the obtained solid precipitate, and drying for 6 hours at the temperature of 80 ℃ to obtain AgI.
The invention has the beneficial effects that:
(1) the raw materials are cheap and easy to obtain, toxic and harmful organic solvents are not used, the process is simple and environment-friendly, expensive equipment is not needed, and the method can be used for experimental operation and industrial large-scale production.
(2) Prepared AgI/LaFeO3/g-C3N4The composite photocatalyst has high degradation rate to organic pollutant norfloxacin, and can reach 95% within 120 min.
(3) The invention further expands the application field of the carbon nitride nano material and provides a brand-new idea for the development and large-scale application of other semiconductor composite carbon nitride nano materials.
Drawings
FIG. 1a is the AgI/LaFeO prepared3/g-C3N4And a Scanning Electron Microscope (SEM) of the composite photocatalyst, wherein the magnification is 5 ten thousand times.
FIG. 1b is the AgI/LaFeO prepared3/g-C3N4And (4) a Transmission Electron Microscope (TEM) image of the composite photocatalyst with the magnification of 10 ten thousand times.
FIG. 2 is a schematic representation of AgI/LaFeO prepared3/g-C3N4The X-ray diffraction pattern (XRD) of the composite photocatalyst has an abscissa of twice the diffraction angle (2. theta.) and an ordinate of diffraction peak intensity (cps).
FIG. 3 is a schematic representation of AgI/LaFeO prepared3/g-C3N4The composite photocatalyst has degradation efficiency on norfloxacin.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the technical solutions.
Example 1
This example provides an AgI/LaFeO3/g-C3N4The preparation method of the composite photocatalyst comprises the following specific steps:
0.002mol of La (NO)3)3·6H2O、0.002molFe(NO3)3·9H2O anddissolving 0.01mol of citric acid in deionized water, adding 20ml of ethylene glycol, stirring for 0.5h by intense magnetic force, pouring the mixed solution into a polytetrafluoroethylene reaction kettle, and heating for 12h at 160 ℃ in a vacuum drying oven. Washing the obtained granules with deionized water and anhydrous ethanol for several times, drying in a vacuum drying oven at 80 deg.C for 12 hr, and calcining at 800 deg.C for 2 hr to obtain LaFeO3。
Putting 15g of melamine into a ceramic crucible, calcining for 5h with a cover in air at 520 ℃ (programmed temperature rise of 2 ℃/min), then opening the cover for 520 ℃ (programmed temperature rise of 2 ℃/min), calcining for 2h in air at open cover to obtain g-C3N4。
0.01mol of KI and 0.01mol of AgNO3Adding into deionized water, stirring, filtering the obtained solid precipitate, and drying at 80 deg.C for 6 h. To obtain AgI.
0.03g of AgI and 0.3g of LaFeO3And 1gg-C3N4And (3) fully mixing, pouring the powder into deionized water, carrying out ultrasonic oscillation for 30min, then placing the suspension in a vacuum drying oven at 160 ℃ for 12h, and calcining the obtained powder in air at 520 ℃ for 5 h. Grinding to obtain AgI/LaFeO3/g-C3N4A composite photocatalyst is provided.
0.2g of AgI/LaFeO is taken3/g-C3N4The composite photocatalyst and 100ml norfloxacin solution with the concentration of 20mg/l are magnetically stirred in a quartz beaker, and dark reaction is carried out under dark conditions before irradiation is started to achieve the adsorption-desorption balance between the catalyst and norfloxacin. The light source of the experiment is provided by a xenon lamp of 500W, the distance between the light source and the surface of the reaction suspension is about 20cm, 5ml of suspension is taken every 30min for centrifugal separation (8000rpm for 5min), the absorbance of the supernatant is measured at the maximum absorption wavelength of the norfloxacin of 280nm, and the norfloxacin concentration in the supernatant is calculated according to the absorbance.
The degradation result is shown in FIG. 3, and AgI/LaFeO is within 120min3/g-C3N4The degradation efficiency of the composite photocatalyst to norfloxacin reaches 95 percent.
For AgI/LaFeO prepared by the invention3/g-C3N4The appearance and the crystal structure of the composite photocatalyst are characterized, and the characteristics are as follows:
(1) topography analysis
The AgI/LaFeO prepared by the invention is processed by the Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) technology3/g-C3N4The composite photocatalyst is subjected to morphology, size and surface physical structure analysis, and is shown in figure 1a and figure 1 b. AgI and LaFeO can be seen from the figure3Uniformly grow at g-C3N4The above.
(2) X-ray diffraction Pattern (XRD) analysis
The AgI/LaFeO prepared by the invention is subjected to X-ray diffraction technology3/g-C3N4And analyzing the crystal structure of the composite photocatalyst. The curve in FIG. 2 is AgI/LaFeO prepared by the invention3/g-C3N4XRD pattern and AgI (JCPDSNo.09-0374) and LaFeO of composite photocatalyst3(JCPDSNo.37-1493)、g-C3N4(JCPDSNo.87-1526) standard card. No diffraction peak of other substances appears in the spectrogram, which indicates that AgI/LaFeO prepared by the invention3/g-C3N4Successfully preparing the composite photocatalyst.
Claims (5)
1. AgI/LaFeO3/g-C3N4The preparation method of the composite photocatalyst is characterized by comprising the following steps: 1 to 15 weight percent of AgI and 1 to 50 weight percent of LaFeO3And 100 wt% g-C3N4Ultrasonically oscillating in deionized water for 0.5h, and drying in a vacuum drying oven at 160 ℃ until the water completely disappears; the powders are fully mixed and poured into a crucible to be calcined for 5 hours in the air at the temperature of 520 ℃ to obtain AgI/LaFeO3/g-C3N4A composite photocatalyst is provided.
2. An AgI/LaFeO according to claim 13/g-C3N4The preparation method of the composite photocatalyst is characterized in that the drying temperature is 160 ℃, and the drying time is 12 hours.
3. An AgI/LaFeO according to claim 13/g-C3N4A preparation method of a composite photocatalyst and a preparation method thereof,characterized in that LaFeO3The preparation process comprises the following steps: adding La (NO) according to the mass ratio of 1:1:53)3·6H2O、Fe(NO3)3·9H2Dissolving O and citric acid in deionized water, adding 20ml of ethylene glycol, stirring for 0.5h by intense magnetic force, pouring the mixed solution into a polytetrafluoroethylene reaction kettle, heating for 12h at 160 ℃ in a vacuum drying oven, washing the obtained particles for several times by deionized water and absolute ethyl alcohol, drying for 12h at 80 ℃ in the vacuum drying oven, and calcining for 2h at 800 ℃ to obtain LaFeO3。
4. An AgI/LaFeO according to claim 13/g-C3N4The preparation method of the composite photocatalyst is characterized in that g-C3N4The preparation process comprises the following steps: placing a proper amount of melamine into a ceramic crucible, heating at 520 ℃, programming to 2 ℃/min, covering in the air and calcining for 5h, then opening the cover to 520 ℃, programming to 2 ℃/min, covering in the air and calcining for 2h to obtain g-C3N4。
5. An AgI/LaFeO according to claim 13/g-C3N4The preparation method of the composite photocatalyst is characterized in that the AgI preparation process comprises the following steps: mixing KI and AgNO with equal molar mass3And after being fully stirred in deionized water, filtering the obtained solid precipitate, and drying the solid precipitate for 6 hours at the temperature of 80 ℃ to obtain AgI.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389425A (en) * | 2020-05-15 | 2020-07-10 | 福州大学 | Perovskite photocatalytic material for removing algae in water body and preparation method thereof |
| CN111514920A (en) * | 2020-05-27 | 2020-08-11 | 辽宁师范大学 | AgBr/LaNiO3/g-C3N4Preparation method of composite photocatalyst |
| CN113413907A (en) * | 2021-07-19 | 2021-09-21 | 浙江省科创新材料研究院 | Compound near-infrared photocatalyst and preparation method and application thereof |
| CN114100657A (en) * | 2021-11-23 | 2022-03-01 | 长春大学 | alpha-Fe2O3/LaFeO3/g-C3N4/MXene material and preparation method and application thereof |
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| CN111389425B (en) * | 2020-05-15 | 2022-08-12 | 福州大学 | Perovskite photocatalytic material for removing algae in water body and preparation method thereof |
| CN111514920A (en) * | 2020-05-27 | 2020-08-11 | 辽宁师范大学 | AgBr/LaNiO3/g-C3N4Preparation method of composite photocatalyst |
| CN113413907A (en) * | 2021-07-19 | 2021-09-21 | 浙江省科创新材料研究院 | Compound near-infrared photocatalyst and preparation method and application thereof |
| CN113413907B (en) * | 2021-07-19 | 2022-05-03 | 浙江省科创新材料研究院 | Compound near-infrared photocatalyst and preparation method and application thereof |
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