CN112892562A - Z-type Bi prepared based on in-situ synthesis method3O4Cl/Bi2MoO6Composite photocatalyst and application thereof - Google Patents
Z-type Bi prepared based on in-situ synthesis method3O4Cl/Bi2MoO6Composite photocatalyst and application thereof Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 42
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 21
- 238000003786 synthesis reaction Methods 0.000 title claims description 4
- 230000015572 biosynthetic process Effects 0.000 title description 2
- 229910002900 Bi2MoO6 Inorganic materials 0.000 claims abstract description 60
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 238000001308 synthesis method Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 230000000593 degrading effect Effects 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 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 claims description 31
- 229960001180 norfloxacin Drugs 0.000 claims description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000003242 anti bacterial agent Substances 0.000 claims description 8
- 229940088710 antibiotic agent Drugs 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 239000011684 sodium molybdate Substances 0.000 claims description 6
- 229910004619 Na2MoO4 Inorganic materials 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 230000003115 biocidal effect Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 239000002243 precursor Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 19
- 238000006731 degradation reaction Methods 0.000 description 19
- 239000003054 catalyst Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 238000002835 absorbance Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010453 quartz Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000006228 supernatant Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 238000001027 hydrothermal synthesis Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical compound [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
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- 238000004626 scanning electron microscopy Methods 0.000 description 2
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- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000004627 transmission electron microscopy Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 229910015667 MoO4 Inorganic materials 0.000 description 1
- 239000004098 Tetracycline Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001622 bismuth compounds Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- FDDDEECHVMSUSB-UHFFFAOYSA-N sulfanilamide Chemical compound NC1=CC=C(S(N)(=O)=O)C=C1 FDDDEECHVMSUSB-UHFFFAOYSA-N 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 229960002180 tetracycline Drugs 0.000 description 1
- 229930101283 tetracycline Natural products 0.000 description 1
- 235000019364 tetracycline Nutrition 0.000 description 1
- 150000003522 tetracyclines Chemical class 0.000 description 1
- 238000002371 ultraviolet--visible spectrum Methods 0.000 description 1
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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
- B01J27/06—Halogens; Compounds thereof
- B01J27/132—Halogens; Compounds thereof with chromium, molybdenum, tungsten or polonium
-
- B01J35/39—
-
- 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
-
- 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
Abstract
The invention relates to Z-type Bi prepared based on an in-situ synthesis method3O4Cl/Bi2MoO6A composite photocatalyst and application thereof. First Bi (NO)3)3·5H2O solution and NH4Fully stirring the Cl solution, uniformly mixing, placing the mixture into a stainless steel high-pressure reaction kettle, placing the stainless steel high-pressure reaction kettle into a drying oven for reaction at 160 ℃ for 12 hours, centrifuging, drying and grinding the obtained product, and calcining the product at 500 ℃ for 5 hours to obtain a target product Bi3O4Cl nanoparticles. The invention uses Bi3O4Cl is taken as a precursor to carry out in-situ reaction to generate Bi2MoO6Construction of Z-type Bi3O4Cl/Bi2MoO6The composite photocatalyst can efficiently emit light under the action of visible lightCatalyzing and degrading organic pollutants in water.
Description
Technical Field
The present invention belongs toIn the field of photocatalysts, in particular to Z-shaped Bi synthesized by a hydrothermal method and an in-situ synthesis method3O4Cl/Bi2MoO6A composite photocatalyst and application thereof in degrading organic pollutants in water under visible light.
Background
With the rapid development of modern economy, the excessive consumption of various non-renewable energy sources by people makes the non-renewable energy sources more and more scarce, and simultaneously, a large amount of pollutants are generated to harm the environment. Therefore, new energy is increasingly paid attention and researched, and the development of the new energy is an urgent task. In recent years, advanced oxidation technologies, especially photocatalytic technologies, have been studied more and more intensively, and have become effective means for solving energy crisis and degrading pollutants. Conventional photocatalysts (e.g. TiO)2ZnO, etc.) cannot be well utilized due to low utilization rate of sunlight, high electron hole recombination rate, etc. Therefore, the improvement on the existing basis is a feasible method for improving the photocatalytic performance.
Bismuth-based photocatalysts are catalysts which take metal bismuth and other bismuth compounds as main components, have special layered structures and forbidden bandwidth with proper size, have the characteristics of stable chemical properties, low cost, simple preparation process and the like, and have good degradation capability on organic pollutants (antibiotics, dyes and the like) in water, so that the bismuth-based photocatalysts attract more and more attention.
Disclosure of Invention
The object of the present invention is Bi3O4Taking Cl as a precursor, and synthesizing Z-type Bi through an in-situ synthesis method3O4Cl/Bi2MoO6The composite photocatalyst further widens the photoresponse range of the semiconductor photocatalyst, obviously reduces the electron and hole recombination rate, and obviously improves the catalytic activity of the photocatalyst.
Another object of the present invention is to utilize Z-type Bi3O4Cl/Bi2MoO6The composite photocatalyst catalyzes and degrades antibiotics in water.
The technical scheme adopted by the invention is as follows: based on in situ synthesisPrepared Z-type Bi3O4Cl/Bi2MoO6A composite photocatalyst, Bi in a particle number ratio3O4Cl:Bi2MoO6＝(0.5-10):1。
Further, the Z-type Bi prepared based on the in-situ synthesis method3O4Cl/Bi2MoO6The preparation method of the composite photocatalyst comprises the following steps: taking Bi3O4Cl and Na2MoO4·2H2O is dissolved in ethylene glycol, and then Bi is added3O4Cl suspension and Na2MoO4Fully stirring the solution, uniformly mixing, placing the solution in a stainless steel high-pressure reaction kettle, placing the solution in a drying oven, reacting for 24 hours at 160 ℃, centrifuging and drying the obtained product, grinding the product, and calcining for 5 hours at 500 ℃ to obtain a target product Bi3O4Cl/Bi2MoO6。
Further, the Z-type Bi prepared based on the in-situ synthesis method3O4Cl/Bi2MoO6A composite photocatalyst of said Bi3O4The preparation method of Cl comprises the following steps: adding Bi (NO)3)3·5H2Dissolving O in ethylene glycol, magnetically stirring, and adding NH4Continuously stirring the Cl aqueous solution for 20min, transferring the Cl aqueous solution into a Teflon stainless steel high-pressure reaction kettle, putting the kettle into an oven, reacting for 12h at 160 ℃, cooling to room temperature, centrifugally collecting precipitate, washing with distilled water, drying, and calcining for 5h at 500 ℃ to obtain Bi3O4And (3) Cl nanoparticles.
The Z-type Bi prepared based on the in-situ synthesis method provided by the invention3O4Cl/Bi2MoO6The composite photocatalyst is applied to degrading antibiotics under visible light.
Further, the method is as follows: adding the Z-type Bi prepared based on the in-situ synthesis method into a solution containing antibiotics3O4Cl/Bi2MoO6And (3) irradiating the composite photocatalyst for 2-3h under sunlight.
Further, Z-type Bi prepared based on in-situ synthesis method3O4Cl/Bi2MoO6The adding amount of the composite photocatalyst is 0.5-2.0 g/L.
Further, the antibiotic is norfloxacin.
The invention has the beneficial effects that: in the invention, Z-type Bi3O4Cl/Bi2MoO6The composite photocatalyst is prepared by a hydrothermal method and an in-situ synthesis method, the preparation process is simple and convenient, and the prepared catalyst has high purity. Namely, Bi is synthesized firstly3O4Cl monomer and taking it as precursor to synthesize Bi in situ2MoO6The two substances form a Z-shaped structure, so that the photoresponse range is greatly widened, the combination of photo-generated electrons and holes is reduced, and the photocatalytic activity is further improved.
Drawings
FIG. 1 shows Bi3O4X-ray diffraction pattern of Cl.
FIG. 2 is Bi2MoO6X-ray diffraction pattern of (a).
FIG. 3 is Bi3O4Cl/Bi2MoO6X-ray diffraction pattern of (a).
FIG. 4 shows Bi3O4Cl/Bi2MoO6Scanning electron microscopy of (a).
FIG. 5 shows Bi3O4Cl/Bi2MoO6Transmission electron microscopy images of (a).
Figure 6 is a graph of the ultraviolet absorption of norfloxacin solution.
Detailed Description
Example 1
Z-type Bi3O4Cl/Bi2MoO6The preparation method of the composite photocatalyst (I) comprises the following steps:
1) preparation of Bi by hydrothermal method3O4Cl monomer: first, 0.97g of Bi (NO) was accurately weighed3)3·5H2O is placed in a clean beaker, then 20mL of ethylene glycol is measured and added, and the mixture is stirred magnetically for 10min to be dissolved completely. Simultaneously, accurately measuring 0.036g of NH4Cl was placed in another clean beaker, 50mL of distilled water was added thereto, and it was dissolved by continuous stirring, and then both were put intoThe solution was mixed and stirred for 20 min. Then, the mixture was transferred to a 100ml Teflon stainless steel autoclave and placed in an oven to react at 160 ℃ for 12 hours. Then, the precipitate was cooled to room temperature, collected by centrifugation, washed three times with distilled water, and dried at 80 ℃ for 12 hours. Then calcining the solid powder in a muffle furnace at 500 ℃ for 5h, cooling to room temperature, fully grinding, and storing in a closed container to obtain Bi3O4And (3) Cl nanoparticles.
2) Preparation of Bi by in situ Synthesis3O4Cl/Bi2MoO6The composite photocatalyst comprises: first, 6 parts by weight of Bi each 0.3632g were weighed3O4The Cl solid powders were dissolved in 20ml of ethylene glycol, magnetically stirred for 10min, and then 6 parts by weight of Na were weighed as 0.1688g, 0.1578g, 0.1396g, 0.1251g, 0.1037g and 0.0726g2MoO4·2H2O is respectively dissolved in 10ml of ethylene glycol, the mixture is magnetically stirred for 10min, and then 6 parts of sodium molybdate solution is respectively poured into Bi3O4In the Cl suspension, the mixture is stirred magnetically for 20min to be mixed evenly. And then transferring the mixture into a 50ml Teflon stainless steel high-pressure reaction kettle, marking, putting the kettle into an oven, reacting for 24 hours at 160 ℃, taking out the kettle, naturally cooling to room temperature, centrifuging, collecting precipitate, washing with deionized water for three times, and drying for 12 hours at 60 ℃. The solid powder was then calcined in a muffle furnace at 500 ℃ for 5 h. Finally obtaining solid powder, fully grinding the solid powder, storing the powder in a dry closed container, and finally marking the powder as Bi respectively3O4Cl/Bi2MoO6(0.5:1)、Bi3O4Cl/Bi2MoO6(1:1)、Bi3O4Cl/Bi2MoO6(2:1)、Bi3O4Cl/Bi2MoO6(3:1)、Bi3O4Cl/Bi2MoO6(5:1) and Bi3O4Cl/Bi2MoO6(10:1) nanocomposite (numerical values in parentheses represent Bi)3O4Cl and Bi2MoO6The number ratio of particles) of (c).
(II) comparative example
Preparation of Bi2MoO6Monomer (b): accurately weigh 1.74mmol (0).8433g)Bi(NO3)3·5H2O and 0.87mmol (0.2105g) Na2MoO4·2H2O, each dissolved in 10mL of Ethylene Glycol (EG), and the mixture was stirred to dissolve all of O. Then, the two solutions were mixed and stirred well for 20 min. Then transferred to a 50mL Teflon stainless steel autoclave and placed in an oven to react at 160 ℃ for 20 h. Then taking out and cooling to room temperature, centrifuging and collecting precipitate, washing with deionized water for three times, and drying at 60 ℃ for 12 h. Finally obtaining yellow solid powder Bi2MoO6And (3) fully grinding the nano particles, and then filling the ground nano particles into a dry closed container for later use.
(III) characterization of the catalyst
FIG. 1 shows Bi3O4XRD pattern of Cl nanoparticles, Bi is clearly seen in FIG. 13O4Characteristic peak of Cl, and is consistent with that of standard card (JCPDS NO.36-0760), and the result shows that Bi is successfully prepared3O4Cl nanoparticles.
FIG. 2 is Bi2MoO6XRD pattern of nanoparticles, Bi is clearly seen in FIG. 22MoO6The characteristic peaks of (a) are in one-to-one correspondence with the standard cards (JCPDS NO.21-0102), thereby proving that Bi2MoO6And (4) successfully synthesizing.
FIG. 3 shows Z-form Bi3O4Cl/Bi2MoO6XRD pattern of composite photocatalyst, Bi in the pattern3O4Cl and Bi2MoO6All the characteristic peaks are shown, and the results show that Bi3O4Cl/Bi2MoO6The composite photocatalyst is successfully prepared.
FIG. 4 shows Bi3O4Cl/Bi2MoO6Scanning electron microscopy of (a). The bulk Bi is clearly seen in FIG. 43O4Cl and small spherical Bi2MoO6Thus the test result shows that the Z type Bi3O4Cl/Bi2MoO6The composite photocatalyst is successfully prepared.
FIG. 5 shows Bi3O4Cl/Bi2MoO6Transmission electron microscopy images of (a). It can be clearly understood from the figureThe crystal lattice stripes and the widths in two different directions are clearly seen, and the comparison proves that Bi is3O4Cl and Bi2MoO6Nanoparticles, the results thus demonstrate Bi3O4Cl/Bi2MoO6And (4) successfully compounding.
EXAMPLE 2Z-form Bi3O4Cl/Bi2MoO6Influence of composite photocatalyst on degradation of norfloxacin
Influence of (I) different catalysts on degradation rate of norfloxacin
The experimental method comprises the following steps: 0.02g of Bi was weighed out separately3O4Cl、Bi2MoO6And Bi3O4Cl/Bi2MoO6(1:1) the photocatalyst was added to a quartz tube, and 20mL of an initial 10mg/L Norfloxacin (NFX) aqueous solution was added thereto to conduct the photocatalytic degradation experiment. After 2.5h of irradiation with visible light, 10mL of NFX solution was removed from the quartz tube and centrifuged. The supernatant was then filtered through a 0.45 μm filter to remove the remaining photocatalyst particles. Then measuring the ultraviolet absorbance of the supernatant at 200-800nm, substituting the ultraviolet absorbance into a standard curve formula, and finally calculating the degradation rate of NFX. The results are shown in Table 1 and FIG. 6.
Percent degradation rate (%) (1-C/C)0) X 100% (wherein C)0: the concentration of the stock solution; c: concentration of sample).
FIG. 6 is a UV-Vis spectrum of Norfloxacin (NFX) degradation under different conditions under visible light irradiation. As can be seen from the figure, the three catalysts all have degradation effect on NFX, wherein, under the irradiation of visible light, Z-type Bi3O4Cl/Bi2MoO6The catalyst has the most obvious effect on the degradation of NFX solution.
TABLE 1 Effect of different catalysts on norfloxacin degradation
Table 1 shows Bi3O4Cl、Bi2MoO6And Bi3O4Cl/Bi2MoO6Three photocatalysts have different effects on photocatalytic degradation of norfloxacin. As can be seen from Table 1, Bi prepared by the present invention under the condition of 2.5h of irradiation time3O4Cl/Bi2MoO6The composite photocatalyst has the highest degradation rate which reaches 77.1%.
Influence of (II) particle number ratio on norfloxacin degradation rate
The experimental method comprises the following steps: measuring 20mL of norfloxacin solution with initial concentration of 10mg/L, respectively placing the norfloxacin solution into 6 special quartz tubes, and respectively adding 0.02g of Bi with different particle number ratios3O4Cl/Bi2MoO6The composite photocatalyst is irradiated under visible light for 2.5h, and then 10mL of NFX solution is taken out of a quartz tube and centrifuged. The supernatant was then filtered through a 0.45 μm filter to remove the remaining photocatalyst particles. Then measuring the ultraviolet absorbance of the supernatant at 200-800nm, substituting the ultraviolet absorbance into a standard curve formula, and finally calculating the degradation rate of NFX. The results are shown in Table 2.
TABLE 2 influence of the particle number ratio on the norfloxacin degradation effect
As can be seen from Table 2, Z-form Bi was obtained at a particle number ratio of 1:13O4Cl/Bi2MoO6The photocatalyst has higher degradation rate which is 77.1 percent.
(III) influence of different adding amounts of catalyst on degradation rate of norfloxacin
The experimental method comprises the following steps: measuring 20mL of norfloxacin solution with initial concentration of 10mg/L, respectively placing the norfloxacin solution into 4 special quartz tubes, and respectively adding different doses of Bi3O4Cl/Bi2MoO6(particle ratio: 1) the composite photocatalyst was irradiated with visible light for 2.5 hours, and then 10mL of NFX solution was taken out from the quartz tube and centrifuged. Then, the supernatant was filtered through a 0.45 μm filter to remove the remaining photocatalyst fine particlesAnd (4) granulating. Then measuring the ultraviolet absorbance of the supernatant at 200-800nm, substituting the ultraviolet absorbance into a standard curve formula, and finally calculating the degradation rate of NFX. The results are shown in Table 3.
TABLE 3 Effect of different amounts of photocatalyst added on degradation of norfloxacin
As can be seen from Table 3, the degradation rate of NFX increased gradually with increasing catalyst addition. When the catalyst addition amount is 2.0g/L, Bi3O4Cl/Bi2MoO6The degradation rate of the composite catalyst to NFX was 85.2%.
In the above examples, norfloxacin was used as the organic contaminant, but norfloxacin is not a limitation to the antibiotics degraded by the present invention, and the method of the present invention is suitable for degrading any antibiotics, such as sulfanilamide, tetracycline, etc.
Claims (7)
1. Z-type Bi prepared based on in-situ synthesis method3O4Cl/Bi2MoO6A composite photocatalyst is characterized in that Bi is present in a particle quantity ratio3O4Cl:Bi2MoO6＝(0.5-10):1。
2. The Z-type Bi prepared based on the in-situ synthesis method according to claim 13O4Cl/Bi2MoO6The composite photocatalyst is characterized in that the preparation method comprises the following steps: taking Bi3O4Cl and Na2MoO4·2H2O is dissolved in ethylene glycol, and then Bi is added3O4Cl suspension and Na2MoO4Fully stirring the solution, uniformly mixing, placing the solution in a stainless steel high-pressure reaction kettle, placing the solution in a drying oven, reacting for 24 hours at 160 ℃, centrifuging and drying the obtained product, grinding the product, and calcining for 5 hours at 500 ℃ to obtain a target product Bi3O4Cl/Bi2MoO6。
3. The Z-type Bi prepared based on the in-situ synthesis method according to claim 13O4Cl/Bi2MoO6The composite photocatalyst is characterized in that the Bi3O4The preparation method of Cl comprises the following steps: adding Bi (NO)3)3·5H2Dissolving O in ethylene glycol, magnetically stirring, and adding NH4Continuously stirring the Cl aqueous solution for 20min, transferring the Cl aqueous solution into a Teflon stainless steel high-pressure reaction kettle, putting the kettle into an oven, reacting for 12h at 160 ℃, cooling to room temperature, centrifugally collecting precipitate, washing with distilled water, drying, and calcining for 5h at 500 ℃ to obtain Bi3O4And (3) Cl nanoparticles.
4. Z-form Bi prepared based on in-situ synthesis method according to any one of claims 1 to 33O4Cl/Bi2MoO6The composite photocatalyst is applied to degrading antibiotics under visible light.
5. Use according to claim 4, characterized in that the method is as follows: adding the Z-type Bi prepared based on the in-situ synthesis method according to any one of claims 1 to 3 into a solution containing antibiotics3O4Cl/Bi2MoO6And (3) irradiating the composite photocatalyst for 2-3h under sunlight.
6. The use of claim 5, wherein the Z-form Bi is prepared by in situ synthesis3O4Cl/Bi2MoO6The adding amount of the composite photocatalyst is 0.5-2.0 g/L.
7. The use of any one of claims 4 to 6, wherein the antibiotic is norfloxacin.
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| CN114210322A (en) * | 2021-12-21 | 2022-03-22 | 辽宁大学 | Bi0/Bi2MoO6{010} wave-absorbing material with high exposure {010} crystal face, preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262131A (en) * | 2017-07-17 | 2017-10-20 | 河海大学 | A kind of visible light-responded Bi3O4Cl/g‑C3N4The preparation method and application of heterojunction material |
| CN107626333A (en) * | 2017-09-14 | 2018-01-26 | 青岛农业大学 | The tri compound catalysis material of one step hydro thermal method synthesis |
| CN107890877A (en) * | 2017-10-26 | 2018-04-10 | 江苏大学 | A kind of Bi3O4Cl/CdS composites and preparation method and purposes |
-
2021
- 2021-01-28 CN CN202110119473.3A patent/CN112892562B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262131A (en) * | 2017-07-17 | 2017-10-20 | 河海大学 | A kind of visible light-responded Bi3O4Cl/g‑C3N4The preparation method and application of heterojunction material |
| CN107626333A (en) * | 2017-09-14 | 2018-01-26 | 青岛农业大学 | The tri compound catalysis material of one step hydro thermal method synthesis |
| CN107890877A (en) * | 2017-10-26 | 2018-04-10 | 江苏大学 | A kind of Bi3O4Cl/CdS composites and preparation method and purposes |
Non-Patent Citations (2)
| Title |
|---|
| YONG ZHAO ET AL.: ""Facile fabrication of plate-like Bi3O4Cl for visible-light-driven photocatalytic degradation of tetracycline hydrochloride"", 《MICRO & NANO LETTERS》 * |
| 李丹阳: ""Ce基及Bi基纳米材料的制备及其光电应用"", 《中国优秀博硕士学位论文全文数据库（硕士）工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210322A (en) * | 2021-12-21 | 2022-03-22 | 辽宁大学 | Bi0/Bi2MoO6{010} wave-absorbing material with high exposure {010} crystal face, preparation method and application |
| CN114210322B (en) * | 2021-12-21 | 2023-05-26 | 辽宁大学 | Bi0/Bi2MoO6{010} wave-absorbing material with high exposure {010} crystal face, preparation method and application |
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