CN112958138A - Composite photocatalyst AgIn5S8/g-C3N4And preparation method and application thereof - Google Patents
Composite photocatalyst AgIn5S8/g-C3N4And preparation method and application thereof Download PDFInfo
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
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- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
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- DNXHEGUUPJUMQT-UHFFFAOYSA-N (+)-estrone Natural products OC1=CC=C2C3CCC(C)(C(CC4)=O)C4C3CCC2=C1 DNXHEGUUPJUMQT-UHFFFAOYSA-N 0.000 abstract description 5
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 abstract description 5
- DNXHEGUUPJUMQT-CBZIJGRNSA-N Estrone Chemical compound OC1=CC=C2[C@H]3CC[C@](C)(C(CC4)=O)[C@@H]4[C@@H]3CCC2=C1 DNXHEGUUPJUMQT-CBZIJGRNSA-N 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 5
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- 239000003153 chemical reaction reagent Substances 0.000 description 2
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- YZZFBYAKINKKFM-UHFFFAOYSA-N dinitrooxyindiganyl nitrate;hydrate Chemical compound O.[In+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YZZFBYAKINKKFM-UHFFFAOYSA-N 0.000 description 2
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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
-
- 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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- 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
- C02F2101/34—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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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Abstract
The invention provides a composite photocatalyst AgIn5S8/g‑C3N4The catalyst has both adsorption and photocatalysis performances, and meanwhile, the catalyst material has good stability and can obviously improve the utilization rate of visible light. The composite photocatalyst AgIn of the invention5S8/g‑C3N4The photocatalyst has high photocatalytic efficiency, is used for degrading and removing E1 (estrone) and E2 (estradiol) under visible light, and can realize the photocatalytic effect of more than 93 percent of E1 (estrone) and 91 percent of E2 (estradiol) at most. The composite photocatalyst AgIn of the invention5S8/g‑C3N4With g-C3N4Replaces partial noble metal components, greatly reduces the cost of the photocatalyst and is suitable for daily application. The inventionThe preparation method is simple and suitable for industrial production.
Description
Technical Field
The invention relates to treatment of organic polluted water, in particular to a composite photocatalyst AgIn5S8/g-C3N4And a preparation method and application thereof.
Background
With the rapid development of industry and the rapid growth of population, the water environment pollution is increasingly serious, and the water environment treatment problem becomes a great subject which is paid attention to and solved by all human beings. Of particular concern are: although the exposure level of the environmental hormone pollutants in the water body is low, the environmental hormone pollutants can generate strong biological effects, thereby endangering ecological safety and human reproduction. Research has shown that long-term exposure of some wild animals to such pollutants can lead to the reproductive organs of some wild animals not developing and maturing all the time, and the number of the wild animals is sharply reduced and the wild animals are in endangered extinction condition; meanwhile, environmental hormone pollutants cause great harm to human health, especially the influence on human reproductive system is serious, which is manifested by the increase of disease incidence rates of sperm quantity sharp decrease, endometriosis, testicular cancer, breast cancer and the like; in addition, the latency of environmental hormone toxicity may also have serious effects on offspring. Because of the low levels of exposure to such contaminants (on the order of nanograms to micrograms per liter), the awareness of the hazards to most people remains weak. Environmental estrogens are poorly degradable, lipid soluble compounds, at low environmental concentrations, which gradually accumulate and enrich through the water circulation and food chain. The common water treatment method can not effectively remove the water, and is easy to cause environmental residue. Therefore, the method for effectively removing the environmental estrogen in the water is of great significance.
The photocatalysis technology is an advanced water treatment technology appearing in recent years, and has the advantages of capability of effectively destroying the structure of organic pollutants, low energy consumption and raw material consumption, simple process, no damage to background environment and no secondary pollution, thereby being an environment-friendly water treatment method with wide prospect. The catalytic performance of the photocatalytic material determines the quality of treated effluent, and conventional photocatalysts are easy to generate electron and hole recombination to influence the photocatalytic efficiency. In addition, the preparation method and the difficulty of material taking should be fully considered when preparing the photocatalyst, and the preparation cost should be considered while considering the application efficiency.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a composite photocatalyst AgIn5S8/g-C3N4The catalyst has high photocatalytic efficiency and low cost, and is suitable for daily application.
All percentages used in the present invention are by weight, unless otherwise specified.
In order to achieve the purpose, the technical scheme of the invention is as follows:
composite photocatalyst AgIn5S8/g-C3N4The preparation method comprises the following steps:
(1)g-C3N4the preparation of (1): heating melamine to obtain light yellow powder, ultrasonically dispersing in dilute nitric acid, washing the dispersion with distilled water, and drying in a vacuum drying oven overnight to obtain g-C3N4；
(2)AgIn5S8The preparation of (1): mixing AgNO3And In (NO)3)3·xH2Dissolving O with ethylene glycol, adding thioacetamide, mixing uniformly, sealing the mixed solution in a high-pressure reaction kettle for solvothermal reaction, naturally cooling to room temperature after the reaction is finished, washing the product with distilled water, and placing the product in a vacuum drying oven for drying overnight to obtain AgIn5S8。
(3)g-C3N4And AgIn5S8Preparation of nanoparticle composites: g to C3N4Ultrasonically dispersing in ethanol water, adding AgIn5S8Stirring the nanoparticles for 8-20h, centrifuging, and drying in a vacuum oven overnight to obtain g-C3N4And AgIn5S8A nanoparticle composite.
The dilute nitric acid of the invention refers to dilute nitric acid with the nitric acid content below 6mol/L (the content is below 31.68 percent). In (NO) of the present invention3)3·xH2O is indium nitrate hydrate, and x is 4 or 5.
According to one embodiment of the invention, the melamine heating temperature in the step 1) is 480-520 ℃, and the heating time is 2.5-3 h. Further, the ultrasonic dispersion time in the step 1) is 15-20 min; the vacuum drying temperature is 65-70 ℃.
According to an embodiment of the invention, the solvothermal reaction temperature in the step 2) is 180-190 ℃, and the reaction time is 20-24 h; the vacuum drying temperature is 70-75 ℃. Further, AgNO in the step 2) above3And In (NO)3)3·xH2The molar ratio of O is 1: 5.
According to an embodiment of the present invention, the ratio of ethanol to water in the ethanol aqueous solution in the above step 3) is 2: 1, ultrasonic dispersion time is 1 h; the vacuum drying temperature is 70-75 ℃.
According to an embodiment of the present invention, g-C is controlled in the above step 3)3N4The mass fraction of is as follows: 5 to 35 percent.
Composite photocatalyst AgIn5S8/g-C3N4The preparation method comprises the following steps:
(1) heating melamine at 500 deg.C for 3h to obtain light yellow powder, ultrasonically dispersing in dilute nitric acid for 15min, washing the dispersion with distilled water, and oven drying at 65 deg.C overnight in a vacuum drying oven to obtain g-C3N4；
(2) Mixing AgNO3And In (NO)3)3·xH2Dissolving O in ethylene glycol, wherein AgNO3And In (NO)3)3·xH2Adding thioacetamide into the mixture according to the molar ratio of 1:5, uniformly mixing the mixture, sealing the mixed solution in a high-pressure reaction kettle to perform solvothermal reaction at the reaction temperature of 180 ℃ for 24 hours, naturally cooling the product to room temperature after the reaction is finished, washing the product with distilled water, and drying the product in a vacuum drying oven at the temperature of 70 ℃ overnight to obtain AgIn5S8。
(3) G to C3N4Ultrasonically dispersing in ethanol water solution, ethanol and water in the ethanol water solutionThe proportion is 2: 1, control g-C3N4Weighing and adding AgIn with the mass fraction of 5-35 percent5S8Stirring the nanoparticles for 12h, centrifuging, and drying in a vacuum oven overnight to obtain a powdery solid g-C3N4And AgIn5S8Nanoparticle composite (AgIn)5S8/g-C3N4)。
The composite photocatalyst AgIn of the invention5S8/g-C3N4The application in degrading and removing environmental hormones such as E1 (estrone) and E2 (estradiol).
Has the advantages that:
the invention provides a composite photocatalyst AgIn5S8/g-C3N4The catalyst has both adsorption and photocatalysis performances, and meanwhile, the catalyst material has good stability and can obviously improve the utilization rate of visible light. The composite photocatalyst AgIn of the invention5S8/g-C3N4The photocatalyst has high photocatalytic efficiency, is used for degrading and removing E1 (estrone) and E2 (estradiol) under visible light, and can realize the photocatalytic effect of more than 93 percent of E1 (estrone) and 91 percent of E2 (estradiol) at most. The composite photocatalyst AgIn of the invention5S8/g-C3N4With g-C3N4Replaces partial noble metal components, greatly reduces the cost of the photocatalyst and is suitable for daily application. The preparation method is simple and suitable for industrial production.
Drawings
FIG. 1 shows a composite photocatalyst AgIn prepared in example 15S8/g-C3N4XRD analytical pattern of (a).
FIG. 2 shows a composite photocatalyst AgIn prepared in example 15S8/g-C3N4TEM analysis of (a), wherein (a) g-C3N4(ii) a (b) And (c) AgIn5S8/g-C3N4High resolution transmission electron microscopy images of; (d) a selected area electron diffraction pattern.
FIG. 3 shows a composite photocatalyst AgIn prepared in example 15S8/g-C3N4EDS analysis of (a).
FIG. 4 shows a composite photocatalyst AgIn prepared in example 15S8/g-C3N4Wherein (a) is a UV/Vis DRS plot; (b) is a calculated band gap diagram.
FIG. 5 shows a composite photocatalyst AgIn prepared in example 15S8/g-C3N4PL analysis chart of (1).
Detailed Description
The present invention is described in detail below with reference to specific examples, which are given for the purpose of further illustrating the invention and are not to be construed as limiting the scope of the invention, and the invention may be modified and adapted by those skilled in the art in light of the above disclosure. The raw materials and reagents used in the invention are all commercial products. In (NO) of the present invention3)3·xH2O is indium nitrate hydrate and x is 5, available from Aladdin reagent. The E1/E2 solution in the embodiment of the invention refers to a solution containing single E1 or E2, for example, 0.5mg/L of E1 solution is 0.5000mg of E1.
Example 1
g-C3N4The preparation of (1): placing 15.0g of analytically pure melamine in a crucible, heating in a muffle furnace at 500 ℃ for 3h, dispersing the heat-treated light yellow powder in dilute nitric acid by ultrasonic wave for 15min, washing the product with distilled water, and drying in a vacuum drying oven at 65 ℃ overnight to obtain pure g-C3N4。
AgIn5S8Preparing nano particles: adding 0.1mmol AgNO3And 0.5mmol of In (NO)3)3·5H2And O is mixed in 20mL of glycol, then a mixed solution of thioacetamide and glycol (0.8mmol of thioacetamide and 10mL of glycol) is added, the mixture is stirred and mixed uniformly at room temperature, the mixed solution is sealed in a reaction kettle and reacts at 180 ℃ for 24 hours, the reaction kettle is taken out and cooled to room temperature, the precipitate in the reaction kettle is washed by distilled water, and the precipitate is dried in vacuum at 70 ℃ to constant weight.
AgIn5S8/g-C3N4The preparation of (1): weighing 1.0g g-C3N4Dispersing in ethanol water solution (ethanol: water: 2: 1) under ultrasonic condition for 1h, and controlling g-C3N4Weighing and adding AgIn with the mass fraction of 25%5S8Nanoparticles, stirring was continued for 12h, and the precipitate was centrifuged and dried overnight in a vacuum oven at 70 ℃.
AgIn5S8/g-C3N4Testing the photocatalytic performance:
preparation of 0.5mg/L E1/E2 solution: accurately weighing 0.5000mg of E1/E2, dissolving in 500mL of distilled water, transferring the solution to a 1000mL volumetric flask, adding distilled water to a constant volume to reach a scale, and shaking up.
Photocatalytic degradation experiment: 0.1g of AgIn is added5S8/g-C3N4Adding into 75mL of 0.5mg/L E1/E2 solution, performing dark reaction for 30min, and using 300w xenon lamp as light source to obtain lambda>Carrying out photocatalytic reaction for 120min under the irradiation of visible light with the wavelength of 400nm, taking reaction supernatant, measuring the content of E1/E2 by liquid chromatography, and calculating the removal rate of E1/E2. The average removal rate of 5 replicates of E1/E2 was 93.6%/91.8%, respectively.
Composite photocatalyst AgIn prepared in example 15S8/g-C3N4The XRD analysis result is shown in figure 1, and the result shows that the material is successfully synthesized, and the material has high purity and good crystallinity; composite photocatalyst AgIn5S8/g-C3N4The TEM analysis result of (a) g-C is shown in FIG. 23N4(ii) a (b) And (c) AgIn5S8/g-C3N4High resolution transmission electron microscopy images of; (d) the result of the selected area electron diffraction pattern shows that AgIn5S8Nanoparticles with g-C3N4The close association facilitates efficient electron-hole pair separation; composite photocatalyst AgIn5S8/g-C3N4The EDS analysis result is shown In figure 3, and the result shows that the Ag, In, S, C and N elements In the composite photocatalytic material are g-C3N4The distribution in the matrix is wide; composite photocatalyst AgIn5S8/g-C3N4The results of the UV/Vis DRS analysis of (A) are shown in FIG. 4, wherein (a) is a UV/VisDRS graph and (b) is a calculated band gap graph, and the results show that3N4Compared with the maximum absorption peak of the composite material, the absorption peak is obviously red-shifted to 540nm, and the band gap value is reduced, which shows that AgIn5S8The introduction of the nano material can effectively modulate the absorption band edge and the band gap of the photocatalytic material so as to improve the light absorption performance and the absorption efficiency of the photocatalytic material on visible light; composite photocatalyst AgIn5S8/g-C3N4The PL analysis result is shown in FIG. 5, which shows that the composite photocatalytic material has a g-C ratio3N4The fluorescence intensity of which is greatly reduced, indicates g-C3N4And AgIn5S8The heterojunction formed between the two layers can effectively reduce the recombination of photogenerated holes and electrons and promote the transfer and separation of photogenerated carriers, thereby optimizing the photocatalytic performance of the material.
Example 2
g-C3N4The preparation of (1): placing 15.0g of analytically pure melamine in a crucible, heating in a muffle furnace at 500 ℃ for 3h, dispersing the heat-treated light yellow powder in dilute nitric acid by ultrasonic wave for 15min, washing the product with distilled water, and drying in a vacuum drying oven at 65 ℃ overnight to obtain pure g-C3N4。
AgIn5S8Preparing nano particles: adding 0.1mmol AgNO3And 0.5mmol of In (NO)3)3·5H2And O is mixed in 20mL of glycol, then a mixed solution of thioacetamide and glycol (0.8mmol of thioacetamide and 10mL of glycol) is added, the mixture is stirred and mixed uniformly at room temperature, the mixed solution is sealed in a reaction kettle and reacts at 180 ℃ for 24 hours, the reaction kettle is taken out and cooled to room temperature, the precipitate in the reaction kettle is washed by distilled water, and the precipitate is dried in vacuum at 70 ℃ to constant weight.
AgIn5S8/g-C3N4The preparation of (1): weighing 1.0g g-C3N4Dispersing in ethanol water solution (ethanol: water: 2: 1) under ultrasonic condition for 1h, and controlling g-C3N4Weighing and adding AgIn with the mass fraction of 35 percent5S8Nanoparticles, stirring was continued for 12h, and the precipitate was centrifuged and dried overnight in a vacuum oven at 70 ℃.
AgIn5S8/g-C3N4Testing the photocatalytic performance:
preparation of 0.5mg/L E1/E2 solution: accurately weighing 0.5000mg of E1/E2, dissolving in 500mL of distilled water, transferring the solution to a 1000mL volumetric flask, adding distilled water to a constant volume to reach a scale, and shaking up.
Photocatalytic degradation experiment: 0.1g of AgIn is added5S8/g-C3N4Adding into 75mL of 0.5mg/L E1/E2 solution, performing dark reaction for 30min, and using 300w xenon lamp as light source to obtain lambda>Carrying out photocatalytic reaction for 120min under the irradiation of visible light with the wavelength of 400nm, taking reaction supernatant, measuring the content of E1/E2 by liquid chromatography, and calculating the removal rate of E1/E2. The average removal rate of 5 replicates of experiment E1/E2 was 82.6%/80.4%.
Example 3
g-C3N4The preparation of (1): placing 15.0g of analytically pure melamine in a crucible, heating in a muffle furnace at 500 ℃ for 3h, dispersing the heat-treated light yellow powder in dilute nitric acid by ultrasonic wave for 15min, washing the product with distilled water, and drying in a vacuum drying oven at 65 ℃ overnight to obtain pure g-C3N4。
AgIn5S8Preparing nano particles: adding 0.1mmol of AgNO3And 0.5mmol of In (NO)3)3·5H2And O is mixed in 20mL of glycol, then a mixed solution of thioacetamide and glycol (0.8mmol of thioacetamide and 10mL of glycol) is added, the mixture is stirred and mixed uniformly at room temperature, the mixed solution is sealed in a reaction kettle and reacts at 180 ℃ for 24 hours, the reaction kettle is taken out and cooled to room temperature, the precipitate in the reaction kettle is washed by distilled water, and the precipitate is dried in vacuum at 70 ℃ to constant weight.
AgIn5S8/g-C3N4The preparation of (1): weighing 1.0g g-C3N4Dispersing in ethanol water solution (ethanol: water: 2: 1) under ultrasonic condition for 1h, and controlling g-C3N4Mass fractionWeighing and adding AgIn to the solution to reach the concentration of 15 percent5S8Nanoparticles, stirring was continued for 12h, and the precipitate was centrifuged and dried overnight in a vacuum oven at 70 ℃.
AgIn5S8/g-C3N4Testing the photocatalytic performance:
preparation of 0.5mg/L E1/E2 solution: accurately weighing 0.5000mg of E1/E2, dissolving in 500mL of distilled water, transferring the solution to a 1000mL volumetric flask, adding distilled water to a constant volume to reach a scale, and shaking up.
Photocatalytic degradation experiment: 0.1g of AgIn is added5S8/g-C3N4Adding into 75mL of 0.5mg/L E1/E2 solution, performing dark reaction for 30min, and using 300w xenon lamp as light source to obtain lambda>Carrying out photocatalytic reaction for 120min under the irradiation of visible light with the wavelength of 400nm, taking reaction supernatant, measuring the content of E1/E2 by liquid chromatography, and calculating the removal rate of E1/E2. The average removal rate of 5 replicates of experiment E1/E2 was 76.4%/73.2%.
Claims (10)
1. Composite photocatalyst AgIn5S8/g-C3N4The method is characterized by comprising the following steps:
(1)g-C3N4the preparation of (1): heating melamine to obtain light yellow powder, ultrasonically dispersing in dilute nitric acid, washing the dispersion with distilled water, and drying in a vacuum drying oven overnight to obtain g-C3N4；
(2)AgIn5S8The preparation of (1): mixing AgNO3And In (NO)3)3·xH2Dissolving O with ethylene glycol, adding thioacetamide, mixing uniformly, sealing the mixed solution in a high-pressure reaction kettle for solvothermal reaction, naturally cooling to room temperature after the reaction is finished, washing the product with distilled water, and placing the product in a vacuum drying oven for drying overnight to obtain AgIn5S8。
(3)g-C3N4And AgIn5S8Preparation of nanoparticle composites: g to C3N4Ultrasonically dispersing in ethanol water, adding AgIn5S8Stirring the nanoparticles for 8-20h, centrifuging, and drying in a vacuum oven overnight to obtain g-C3N4And AgIn5S8A nanoparticle composite.
2. The composite photocatalyst AgIn of claim 15S8/g-C3N4The method is characterized in that: the heating temperature of the melamine in the step 1) is 480-520 ℃, and the heating time is 2.5-3 h.
3. The composite photocatalyst AgIn of claim 15S8/g-C3N4The method is characterized in that: the time of ultrasonic dispersion in the step 1) is 15-20 min; the vacuum drying temperature is 65-70 ℃.
4. The composite photocatalyst AgIn of any one of claims 1 to 35S8/g-C3N4The method is characterized in that: the solvothermal reaction temperature in the step 2) is 180-190 ℃, and the reaction time is 20-24 h; the vacuum drying temperature is 70-75 ℃.
5. The composite photocatalyst AgIn of claim 45S8/g-C3N4The method is characterized in that: AgNO in step 2)3And In (NO)3)3·xH2The molar ratio of O is 1: 5.
6. The composite photocatalyst AgIn of any one of claims 1 to 35S8/g-C3N4The method is characterized in that: the proportion of ethanol and water in the ethanol water solution in the step 3) is 2: 1, ultrasonic dispersion time is 1 h; the vacuum drying temperature is 70-75 ℃.
7. The composite photocatalyst AgIn of claim 65S8/g-C3N4The method is characterized in that: control of g-C3N4The mass fraction of (A) is 5-35%.
8. The composite photocatalyst AgIn of any one of claims 1 to 75S8/g-C3N4The preparation method comprises the following steps:
(1) heating melamine at 500 deg.C for 3h to obtain light yellow powder, ultrasonically dispersing in dilute nitric acid for 15min, washing the dispersion with distilled water, and oven drying at 65 deg.C overnight in a vacuum drying oven to obtain g-C3N4；
(2) Mixing AgNO3And In (NO)3)3·xH2Dissolving O in ethylene glycol, wherein AgNO3And In (NO)3)3·xH2Adding thioacetamide into the mixture according to the molar ratio of 1:5, uniformly mixing the mixture, sealing the mixed solution in a high-pressure reaction kettle to perform solvothermal reaction at the reaction temperature of 180 ℃ for 24 hours, naturally cooling the product to room temperature after the reaction is finished, washing the product with distilled water, and drying the product in a vacuum drying oven at the temperature of 70 ℃ overnight to obtain AgIn5S8。
(3) G to C3N4Ultrasonically dispersing in an ethanol water solution, wherein the ratio of ethanol to water in the ethanol water solution is 2: 1, control g-C3N4The mass fraction of the additive is 5 to 35 percent, and AgIn is added5S8Stirring the nanoparticles for 12h, centrifuging, and drying in a vacuum oven overnight to obtain a powdery solid g-C3N4And AgIn5S8A nanoparticle composite.
9. The composite photocatalyst AgIn of any one of claims 1 to 75S8/g-C3N4The application in the degradation and removal of environmental hormones.
10. The use of claim 9, wherein: the environmental hormone is E1 or E2.
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