CN109233838B - Eu (Eu)3+Se codoped with Fe3O4/g-C3N4Material and application thereof in environmental remediation - Google Patents
Eu (Eu)3+Se codoped with Fe3O4/g-C3N4Material and application thereof in environmental remediation Download PDFInfo
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- CN109233838B CN109233838B CN201811305027.6A CN201811305027A CN109233838B CN 109233838 B CN109233838 B CN 109233838B CN 201811305027 A CN201811305027 A CN 201811305027A CN 109233838 B CN109233838 B CN 109233838B
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 230000007613 environmental effect Effects 0.000 title claims abstract description 7
- 238000005067 remediation Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 11
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 7
- 239000011669 selenium Substances 0.000 claims description 39
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 31
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 26
- 239000011790 ferrous sulphate Substances 0.000 claims description 26
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000002244 precipitate Substances 0.000 claims description 23
- 229920000877 Melamine resin Polymers 0.000 claims description 18
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 18
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 17
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 17
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 17
- 229910052711 selenium Inorganic materials 0.000 claims description 17
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 16
- GAGGCOKRLXYWIV-UHFFFAOYSA-N europium(3+);trinitrate Chemical compound [Eu+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GAGGCOKRLXYWIV-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- JVYYYCWKSSSCEI-UHFFFAOYSA-N europium(3+);trinitrate;hexahydrate Chemical group O.O.O.O.O.O.[Eu+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JVYYYCWKSSSCEI-UHFFFAOYSA-N 0.000 claims description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 description 17
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- CVXBEEMKQHEXEN-UHFFFAOYSA-N carbaryl Chemical compound C1=CC=C2C(OC(=O)NC)=CC=CC2=C1 CVXBEEMKQHEXEN-UHFFFAOYSA-N 0.000 description 3
- 229960005286 carbaryl Drugs 0.000 description 3
- VOEYXMAFNDNNED-UHFFFAOYSA-N metolcarb Chemical compound CNC(=O)OC1=CC=CC(C)=C1 VOEYXMAFNDNNED-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000152 carbamate pesticide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 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
- B01J27/24—Nitrogen compounds
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/10—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation
- A62D3/17—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation to electromagnetic radiation, e.g. emitted by a laser
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/04—Pesticides, e.g. insecticides, herbicides, fungicides or nematocides
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/26—Organic substances containing nitrogen or phosphorus
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
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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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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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
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Abstract
The invention relates to Eu3+Se codoped with Fe3O4/g‑C3N4Materials and their use in environmental remediation by Eu3+Se co-doping to make Fe3O4/g‑C3N4The material can reduce the content of effective heavy metals in water and soil.
Description
Technical Field
The invention belongs to the field of material and environment restoration, and particularly relates to Eu3+Se codoped with Fe3O4/g-C3N4Materials and their use in environmental remediation.
Background
Graphite phase carbon nitride (g-C)3N4) The photocatalyst has responsiveness to visible light, well makes up for the defects of the traditional titanium dioxide catalyst, and is widely used for preparing composite materials in the field of photocatalysis. The invention provides a Eu3+Se codoped with Fe3O4/g-C3N4Material and method for producing the sameApplication in environmental remediation.
Disclosure of Invention
The invention provides a Eu3+Se codoped with Fe3O4/g-C3N4Material, characterized in that said Eu3+Se codoped with Fe3O4/g-C3N4The preparation method of the material comprises the following steps:
(1) dissolving ferrous sulfate, ferric chloride and europium nitrate in water, adding hydrazine hydrate containing selenium, stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain the Eu3+Se codoped with Fe3O4/g-C3N4A material.
The molar ratio of the ferrous sulfate, the ferric chloride and the europium nitrate in the step (1) is 5:10:1, 3mL of selenium-containing hydrazine hydrate is used for each millimole of ferrous sulfate, and the selenium-containing hydrazine hydrate contains 6mg of selenium in each milliliter of hydrazine hydrate; the dosage of the melamine in the step (2) is 3.0 times of the molar weight of the ferrous sulfate. The ferrous sulfate is preferably anhydrous ferrous sulfate or ferrous sulfate heptahydrate, and the europium nitrate is preferably europium nitrate hexahydrate.
When the ferrous sulfate, the ferric chloride and the europium nitrate are dissolved in the step (1), the amount of water is preferably enough to fully dissolve the ferrous sulfate, the ferric chloride and the europium nitrate, and preferably 15mL of water is used per millimole of the ferrous sulfate.
Another embodiment of the present invention provides the above Eu3+Se codoped with Fe3O4/g-C3N4The preparation method of the material is characterized by comprising the following steps:
(1) dissolving ferrous sulfate, ferric chloride and europium nitrate in water, adding hydrazine hydrate containing selenium, stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain the Eu3+Se codoped with Fe3O4/g-C3N4A material.
The molar ratio of the ferrous sulfate, the ferric chloride and the europium nitrate in the step (1) is 5:10:1, 3mL of selenium-containing hydrazine hydrate is used for each millimole of ferrous sulfate, and the selenium-containing hydrazine hydrate contains 6mg of selenium in each milliliter of hydrazine hydrate; the dosage of the melamine in the step (2) is 3.0 times of the molar weight of the ferrous sulfate. The ferrous sulfate is preferably anhydrous ferrous sulfate or ferrous sulfate heptahydrate, and the europium nitrate is preferably europium nitrate hexahydrate.
When the ferrous sulfate, the ferric chloride and the europium nitrate are dissolved in the step (1), the amount of water is preferably enough to fully dissolve the ferrous sulfate, the ferric chloride and the europium nitrate, and preferably 15mL of water is used per millimole of the ferrous sulfate.
Another embodiment of the present invention provides the above Eu3+Se codoped with Fe3O4/g-C3N4The material is applied as an environmental remediation agent.
Another embodiment of the present invention provides the above Eu3+Se codoped with Fe3O4/g-C3N4The material is applied to removing heavy metals in soil and water. The heavy metal is preferably chromium, lead or cadmium.
Another embodiment of the present invention provides the above Eu3+Se codoped with Fe3O4/g-C3N4The pesticide is preferably carbamate pesticide, and further preferably metolcarb and carbaryl.
Drawings
SEM image of product A in FIG. 1;
FIG. 2 SEM image of product C;
FIG. 3 is a diagram showing the effect of products A-E on removing hexavalent chromium from water.
Detailed Description
In order to facilitate a further understanding of the invention, the following examples are provided to illustrate it in more detail. However, these examples are only for better understanding of the present invention and are not intended to limit the scope or the principle of the present invention, and the embodiments of the present invention are not limited to the following.
Example 1
(1) Dissolving ferrous sulfate heptahydrate (5mmol), ferric chloride (10mmol) and europium nitrate hexahydrate (1mmol) in water (75mL), adding selenium-containing hydrazine hydrate (15mL and 90mg of selenium), stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine (15mmol) uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain the Eu3+Se codoped with Fe3O4/g-C3N4Material (hereinafter referred to as product a).
Example 2
(1) Dissolving ferrous sulfate heptahydrate (5mmol), ferric chloride (10mmol) and europium nitrate hexahydrate (1mmol) in water (75mL), adding hydrazine hydrate (15mL), stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine (15mmol) uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain Eu3+Doping with Fe3O4/g-C3N4Material (hereinafter referred to as product B).
Example 3
(1) Dissolving ferrous sulfate heptahydrate (5mmol) and ferric chloride (10mmol) in water (75mL), adding hydrazine hydrate containing selenium (15mL and 90mg containing selenium), stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) the precipitate obtained in step (1) was mixed with melamine (15mmol) in a mortarGrinding uniformly, placing into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain Se-doped Fe3O4/g-C3N4Material (hereinafter referred to as product C).
Example 4
(1) Dissolving ferrous sulfate heptahydrate (5mmol) and ferric chloride (10mmol) in water (75mL), adding hydrazine hydrate (15mL), stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine (15mmol) uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain Fe3O4/g-C3N4Material (hereinafter referred to as product D).
Example 5
(1) Dissolving ferrous sulfate heptahydrate (5mmol), ferric chloride (10mmol) and europium nitrate hexahydrate (1mmol) in water (75mL), adding selenium-containing hydrazine hydrate (15mL and 10mg selenium-containing), stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine (15mmol) uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain Eu3+Se codoped with Fe3O4/g-C3N4Material (hereinafter referred to as product E).
Example 6 experiment for removing effective heavy metals from soil
Soil sample: pb 5.25 mg/kg; cd 1.10 mg/kg.
The experimental method comprises the following steps: taking 6 parts of 1.0kg soil sample, respectively adding products A-E (20 g each) into 5 parts of the sample, uniformly mixing to ensure that the mass water content is 40-60%, taking 1 part of the sample as a blank control, placing the sample in a sunlight room, regularly turning soil once every day, and detecting the content of effective heavy metals in the soil part after one week, wherein the results are shown in the following table.
Example 7 soil pesticide residue degradation experiment
Selecting a soil sample: sample 1: metolcarb 200 mg/kg; sample 2: the content of the carbaryl is 200 mg/kg.
The experimental method comprises the following steps: respectively taking 6 parts of 10kg samples 1 and 2, respectively adding the products A-E (50 g each) into 5 parts of the samples, uniformly mixing to ensure that the water content is 40-50%, taking the other 1 part of the samples as a blank control, and detecting the content of the pesticide in the soil after 1 month, wherein the results are shown in the following table.
| Test product | Content of metolcarb (mg/kg) | Content of carbaryl (mg/kg) |
| Product A | 15 | 13 |
| Product B | 128 | 125 |
| Product C | 107 | 112 |
| Product D | 139 | 131 |
| Product E | 76 | 62 |
| Blank space | 154 | 165 |
Example 8 test for removing hexavalent chromium from Water
Respectively taking 100mL of hexavalent chromium standard solution (10mg/L), respectively adding 20mg of product A, B, C, D, E, stirring and reacting for 120min, wherein the absorption and removal effects of hexavalent chromium are shown in figure 3.
Claims (8)
1. Eu (Eu)3+Se codoped with Fe3O4/g-C3N4Material, characterized in that said Eu3+Se codoped with Fe3O4/g-C3N4The preparation method of the material comprises the following steps:
(1) dissolving ferrous sulfate, ferric chloride and europium nitrate in water, adding hydrazine hydrate containing selenium, stirring for 30min, heating to 90 ℃, reacting for 12h, naturally cooling to room temperature, filtering, washing precipitate with deionized water, and drying for later use;
(2) grinding the precipitate obtained in the step (1) and melamine uniformly by using a mortar, putting the ground precipitate and melamine into a muffle furnace, heating to 500 ℃ at a heating rate of 10 ℃/min, preserving heat for 2 hours, and naturally cooling to room temperature to obtain the Eu3+Se codoped with Fe3O4/g-C3N4A material.
2. Eu according to claim 13+Se codoped with Fe3O4/g-C3N4The material is characterized in that the molar ratio of the ferrous sulfate, the ferric chloride and the europium nitrate in the step (1) is 5:10:1, 3mL of selenium-containing hydrazine hydrate is used for each millimole of the ferrous sulfate, and the selenium-containing hydrazine hydrate isSelenium content 6mg per ml hydrazine hydrate.
3. Eu according to any one of claims 1 to 23+Se codoped with Fe3O4/g-C3N4The material is characterized in that the dosage of the melamine in the step (2) is 3.0 times of the molar quantity of the ferrous sulfate.
4. Eu according to claim 13+Se codoped with Fe3O4/g-C3N4The material is characterized in that the ferrous sulfate is selected from anhydrous ferrous sulfate or ferrous sulfate heptahydrate, and the europium nitrate is selected from europium nitrate hexahydrate.
5. Eu according to claim 13+Se codoped with Fe3O4/g-C3N4The material is characterized in that when ferrous sulfate, ferric chloride and europium nitrate are dissolved in the step (1), the using amount of water is 15mL of water per millimole of ferrous sulfate.
6. Eu according to any one of claims 1 to 53+Se codoped with Fe3O4/g-C3N4The material is applied as an environmental remediation agent.
7. Eu according to any one of claims 1 to 53+Se codoped with Fe3O4/g-C3N4The material is applied to removing heavy metals in soil and water.
8. Use according to claim 7, characterized in that said heavy metal is selected from chromium, lead, cadmium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811305027.6A CN109233838B (en) | 2018-11-02 | 2018-11-02 | Eu (Eu)3+Se codoped with Fe3O4/g-C3N4Material and application thereof in environmental remediation |
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| CN201811305027.6A CN109233838B (en) | 2018-11-02 | 2018-11-02 | Eu (Eu)3+Se codoped with Fe3O4/g-C3N4Material and application thereof in environmental remediation |
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| CN109233838A CN109233838A (en) | 2019-01-18 |
| CN109233838B true CN109233838B (en) | 2020-06-30 |
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