CN114505101A - Organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and preparation and application thereof - Google Patents

Organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and preparation and application thereof Download PDF

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CN114505101A
CN114505101A CN202210081551.XA CN202210081551A CN114505101A CN 114505101 A CN114505101 A CN 114505101A CN 202210081551 A CN202210081551 A CN 202210081551A CN 114505101 A CN114505101 A CN 114505101A
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organic dye
reaction
catalyst
solution
acetate
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孙大文
周希艺
蒲洪彬
韦庆益
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South China University of Technology SCUT
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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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/1691—Coordination polymers, e.g. metal-organic frameworks [MOF]
    • B01J35/23—
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/02—Compositional aspects of complexes used, e.g. polynuclearity
    • B01J2531/0213—Complexes without C-metal linkages
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84—Metals of the iron group
    • B01J2531/842—Iron
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84—Metals of the iron group
    • B01J2531/845—Cobalt
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84—Metals of the iron group
    • B01J2531/847—Nickel
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/308—Dyes; Colorants; Fluorescent agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent

Abstract

The invention belongs to the technical field of sewage treatment, and discloses an organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and preparation and application thereof. The method comprises the following steps: firstly, nickel acetate, cobalt acetate, ferrous acetate and 2-amino terephthalic acid react in a solvent to obtain a mixed solution; and then carrying out ultrasonic treatment on the mixed solution to obtain the organic dye degradation catalyst. The organic dye degradation catalyst is a metal organic framework with a two-dimensional grid-shaped structure and can catalyze H2O2The organic metal is decomposed into OH with strong oxidizing property, meanwhile, the specific surface area and the mesoporous structure of MOFs are improved through ultrasonic assistance, the charge transfer among catalytic active sites is enhanced, the synergistic catalytic effect of three metal ions is combined, the catalytic activity of a metal organic framework is greatly enhanced, and the purpose of efficiently degrading organic pollutants is achieved. The organic dye degradation catalyst based on heterogeneous Fenton-like reactionThe agent is used to degrade organic dyes.

Description

Organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and preparation and application thereof
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to an organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and a preparation method and application thereof.
Background
In recent years, the discharge of industrial wastewater is increasing, and extremely serious pollution is caused to water resources, wherein the dye wastewater is one of the pollutants which are extremely difficult to treat in industrial production. The dye wastewater mainly comes from industries such as printing, spinning, papermaking and food, and the wastewater has complex components, high organic matter content, large molecular weight and high chromaticity, is difficult to biodegrade, and is difficult to remove from the environment.
The advanced oxidation technology has higher removal efficiency on the organic pollutants which are difficult to degrade in the sewage, and comprises an ozone oxidation method, a photocatalytic oxidation method, a Fenton oxidation method and the like. The traditional Fenton reaction refers to hydrogen peroxide (H)2O2) Under acidic condition by Fe2 +Catalyzing the generation of hydroxyl radicals (. OH) which are extremely oxidizing. OH can effectively remove some organic pollutants which are difficult to degrade, such as aromatic compounds, heterocyclic compounds and the like, and has wide application prospect in the treatment of printing and dyeing wastewater, oil-containing wastewater, phenol-containing wastewater and other wastewater. However, the conventional homogeneous Fenton reaction system contains a large amount of dispersed Fe2+The oxidation utilization rate of the system is low, the pollutants can not be completely degraded, and the iron precipitation is easy to cause secondary pollution.
The Metal Organic Frameworks (MOFs) are a novel porous nano material formed by metal sites and organic ligands, have high specific surface area, high porosity and well-dispersed active centers, and have adjustable structure and composition. MOFs have gained widespread interest as heterogeneous fenton-like catalysts whose active centers (metal sites) are stabilized by chemical bonds that are strong enough to stabilize their structure, making the material robust, while weak enough not to impede its activity. MOFs as Fenton catalysts can catalyze H2O2OH generated by decomposition can effectively degrade organic pollutants in the wastewater, but the conventional MOFs still cannot get rid of the defects of poor catalytic effect, large dosage and the like, and cannot achieve effective degradation effect.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention aims to provide a preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction, which is simple to operate, low in cost and expected to be used for industrial production.
Another object of the present invention is to provide an organic dye degradation catalyst based on heterogeneous Fenton-like reaction prepared by the above method, and the organic dye degradation catalystCan catalyze H with high efficiency2O2Decomposing to generate OH.
Still another object of the present invention is to provide a use of the above organic dye degradation catalyst based on heterogeneous fenton-like reaction for degrading sewage water whose main pollutant is methylene blue. The organic dye degradation catalyst can be used as a Fenton catalyst to catalyze H in sewage2O2The organic pollutants are decomposed into OH with strong oxidizability, and meanwhile, the specific surface area and the mesoporous structure of the MOFs are improved through ultrasonic assistance, the charge transfer among catalytic active sites is enhanced, and the catalytic activity of the MOFs is greatly enhanced by combining the synergistic catalytic effect of the three metal ions, so that the purpose of efficiently degrading the organic pollutants is achieved.
The purpose of the invention is realized by the following technical scheme:
a preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction comprises the following steps:
s1: reacting nickel acetate, cobalt acetate, ferrous acetate and 2-amino terephthalic acid in a solvent to obtain a mixed solution;
s2: carrying out ultrasonic treatment on the mixed solution to obtain an organic dye degradation catalyst based on heterogeneous Fenton-like reaction;
the ultrasonic treatment conditions are as follows: the ultrasonic power is 400-600W, and the ultrasonic time is 0.5-1.5 h, preferably 1 h; the temperature was room temperature.
The solvent is at least one of N, N-dimethylformamide and methanol.
In step S1, the ratio of the amounts of the nickel acetate, the cobalt acetate and the ferrous acetate is 1:3:6 to 6:3:1, preferably 1 (0.5 to 1.5) to (0.5 to 1.5), and more preferably 1:1: 1.
The ratio of the amount of the 2-aminoterephthalic acid substance to the total amount of the nickel acetate, cobalt acetate and ferrous acetate in step S1 is 1:2 to 2:1, preferably 1: 1.
The reaction time in the step S1 is 20-40 min. The reaction temperature was room temperature.
The reaction in step S1 is carried out under the condition of stirring, and the stirring speed is 200-400 rpm.
The specific step of step S1: dissolving nickel acetate, cobalt acetate and ferrous acetate in a solvent to obtain a solution A; dissolving 2-amino terephthalic acid in a solvent to obtain a solution B; then, the solution A and the solution B are mixed and reacted at room temperature under the condition of stirring to obtain a mixed solution.
The volume ratio of the solvent in the solution A to the solvent in the solution B is 1: 1-3: 1, and preferably 2: 1.
The solvent in the solution A and the solution B is at least one of N, N-dimethylformamide and methanol independently.
The volume ratio of the total amount of nickel acetate, cobalt acetate and ferrous acetate in the solution A to the solvent is 1mmol (5-15) mL;
the volume ratio of the 2-amino terephthalic acid substance in the liquid B to the solvent is 1mmol: (4-10) mL.
After the ultrasonic treatment in step S2, the system is subjected to a subsequent treatment. The subsequent treatment refers to centrifugation, washing and drying. The washing is that N, N-dimethylformamide and ethanol are respectively adopted for washing; the drying is vacuum drying.
The method comprises the steps of respectively washing by adopting N, N-dimethylformamide and ethanol for 2-3 times.
The temperature of vacuum drying is 55-65 ℃.
And the vacuum drying time is 10-15 h.
In step S2, the catalyst metal-organic framework is a grid-shaped two-dimensional nanosheet.
The organic dye degradation catalyst based on the heterogeneous Fenton-like reaction is prepared by the preparation method of the organic dye degradation catalyst based on the heterogeneous Fenton-like reaction.
The organic dye degradation catalyst based on the heterogeneous Fenton-like reaction is applied to degradation of organic dyes.
The application specifically comprises the following steps:
(1) dispersing the organic dye degradation catalyst in water to obtain a dispersion liquid; mixing the dispersion with sewage containing organic dyeMixing, adjusting pH, adding H2O2The organic dye is degraded by the reaction.
The organic dye is methylene blue.
The dosage ratio of the organic dye degradation catalyst to the organic dye is (100-500) mg: (25-35) mg, preferably (150-250): (30-35); the organic dye degradation catalyst and H2O2The dosage ratio of (100-500) mg: (15-25) mmol. The pH is 3-7, preferably 3-6, and more preferably 4.
In the whole reaction system, the concentration of MOFs (catalysts) is 100-500 mg/L, preferably 150-250 mg/L; the concentration of the methylene blue is 25-35 mg/L, and the more preferable concentration is 32 mg/L; h2O2The concentration of (b) is 15 to 25mmol/L, and more preferably 20 mmol/L.
The dispersion is ultrasonic dispersion, and the time of the ultrasonic dispersion is 1-3 min.
The pH can be adjusted using an inorganic base (e.g., NaOH) or an inorganic acid (e.g., HCl).
The reaction time is more than or equal to 0.25h, preferably 1h or more.
The reaction temperature is 25-50 ℃.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the preparation method of the organic dye degradation catalyst based on the heterogeneous Fenton-like reaction is simple, does not need complex instruments and equipment, is low in cost, and is expected to be used for industrial production.
(2) The invention adopts a metal organic framework as a Fenton catalyst to catalyze H2O2Decomposing into OH with strong oxidizing property, thereby degrading organic pollutants in the sewage by the OH. In addition, the metal organic framework catalyst based on ultrasonic assistance effectively reduces the catalyst and H2O2The dosage is used, the secondary pollution is reduced, and the catalyst and H are improved2O2The utilization ratio of (2).
(3) Compared with the prior sewage treatment technology, the organic dye degradation catalyst is a latticed two-dimensional nano prepared by ultrasonic assistanceRice flake material capable of catalyzing H2O2The organic pollutants are decomposed into OH with strong oxidizing property, meanwhile, the specific surface area and the mesoporous structure of the MOFs are improved through ultrasonic assistance, the charge transfer among catalytic active sites is enhanced, the synergistic catalytic effect of the three metal ions is combined, the catalytic activity of the MOFs is greatly enhanced, and the purpose of efficiently degrading the organic pollutants is achieved.
Drawings
FIG. 1 is a Scanning Electron Microscope (SEM) representation of the organic dye degradation catalyst based on the heterogeneous Fenton-like reaction obtained in example 1;
FIG. 2 is a Scanning Electron Microscope (SEM) representation of the organic dye degradation catalyst based on the heterogeneous Fenton-like reaction obtained in example 1; FIG. 2 is a different magnification from FIG. 1;
FIG. 3 is a graph showing the dependence of the degradation effect on the degradation time when the catalyst obtained in example 1 catalyzes and degrades methylene blue;
FIG. 4 is a graph showing the effect of different concentrations of MOFs catalyst obtained in example 2 on the degradation of methylene blue;
FIG. 5 is a graph showing the effect of the different groups obtained in example 3 on the degradation of methylene blue.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to specific examples, but the embodiments of the present invention are not limited thereto. The various starting materials, reagents, instruments, equipment, etc. described in the examples are commercially available or can be prepared by existing methods.
Example 1
A preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction comprises the following steps:
(1) dissolving nickel acetate, cobalt acetate and ferrous acetate in a substance amount ratio of 1:1:1 (total substance amount is 1mmol) into 10mLN, N-dimethylformamide to obtain solution A, dissolving 1mmol of 2-amino terephthalic acid into 5mL of N, N-dimethylformamide to obtain solution B, then pouring the solution A into the solution B under magnetic stirring (rotating speed of 300rpm), and mixing and reacting at room temperature for 30 min;
(2) and (2) carrying out ultrasonic treatment on the mixed solution obtained in the step (1) at room temperature for 1h (the ultrasonic power is 500W), centrifuging after the treatment is finished to obtain a product, washing the product for 2 times by using N, N-dimethylformamide and ethanol respectively, then carrying out vacuum drying at 60 ℃ for 12h to obtain the metal organic framework catalyst, and storing the metal organic framework catalyst in a normal-temperature sealed container.
The application of the catalyst in degrading methylene blue sewage comprises the following steps:
after 89mL of ultrapure water was added to the vessel, 10mgMOFs catalyst (final concentration of 100mg/L) was added and ultrasonically dispersed at room temperature for 2min to uniformly disperse the MOFs (the organic dye degradation catalyst). 1mL of a methylene blue solution (final concentration: 32mg/L) having a concentration of 3.2g/L was added to the MOFs dispersion, and after uniform mixing, the pH was adjusted to 4.0 with HCl, and after uniform stirring, "zero" was sampled. Finally, 10mL of H with the concentration of 200mmol/L is added2O2Constituting a 100mL reaction system, reacting H in the reaction system2O2The final concentration of (A) is 20mmol/L, and the methylene blue is subjected to oxidative degradation. Respectively mixing and reacting in a 37 ℃ thermostat for 0, 0.25, 0.5, 1 and 1.5 hours, then taking water samples, and measuring the absorbance values of the water samples to obtain a time-dependent curve of methylene blue degradation as shown in figure 3.
Fig. 1 and 2 are Scanning Electron Microscope (SEM) characterization diagrams of different magnifications of the organic dye degradation catalyst based on the heterogeneous fenton-like reaction obtained in example 1. The morphology of the metal organic framework is shown. FIG. 3 is a graph showing the degradation effect of the catalyst obtained in example 1 in the catalytic degradation of methylene blue as a function of degradation time.
Example 2
A preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction comprises the following steps:
(1) dissolving nickel acetate, cobalt acetate and ferrous acetate with the mass ratio of 1:1:1 (the total mass is 1mmol) into 10mL of N, N-dimethylformamide to obtain solution A, dissolving 1mmol of 2-amino terephthalic acid into 5mL of N, N-dimethylformamide to obtain solution B, then pouring the solution A into the solution B under magnetic stirring (rotating speed of 300rpm), and mixing and reacting at room temperature for 30 min;
(2) and (2) carrying out ultrasonic treatment on the mixed solution obtained in the step (1) at room temperature for 1h, centrifuging after the treatment to obtain a product, washing the product for 2 times by using N, N-dimethylformamide and ethanol respectively, and then carrying out vacuum drying at 60 ℃ for 12h to obtain the metal organic framework catalyst, and storing the metal organic framework catalyst in a normal-temperature sealed container.
The application of the catalyst in degrading methylene blue sewage comprises the following steps:
89mL of ultrapure water was charged into a 250mL Erlenmeyer flask, and then 0, 10, 20, 30, 40, and 50mg of MOFs catalyst was added to give final concentrations of 0, 100, 200, 300, 400, and 500mg/L, respectively, and then the MOFs were dispersed uniformly by ultrasonic dispersion at room temperature for 2 min. To the MOFs dispersion, 1mL of a methylene blue solution (final concentration: 32mg/L) with a concentration of 3.2g/L was added, and after uniform mixing, pH was adjusted to 4.0 with HCl, and after uniform stirring, a "zero" sample was taken. Finally, 10mL of H with the concentration of 200mmol/L is added2O2Forming a 100mL reaction system, and adding H in the reaction system2O2The final concentration of (2) is 20mmol/L, and the methylene blue is subjected to oxidative degradation. After mixed reaction for 1h in a 37 ℃ thermostat, a water sample is taken, the absorbance value is measured, and the influence of the concentration of different MOFs catalysts on the degradation of methylene blue is obtained as shown in FIG. 4. FIG. 4 is a graph showing the effect of different concentrations of MOFs catalyst obtained in example 2 on the degradation of methylene blue.
Example 3
A preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction comprises the following steps:
(1) dissolving nickel acetate, cobalt acetate and ferrous acetate in a substance amount ratio of 1:1:1 (total substance amount is 1mmol) into 10mLN, N-dimethylformamide to obtain solution A, dissolving 1mmol of 2-amino terephthalic acid into 5mL of N, N-dimethylformamide to obtain solution B, then pouring the solution A into the solution B under magnetic stirring (rotating speed of 300rpm), and mixing and reacting at room temperature for 30 min;
(2) and (2) carrying out ultrasonic treatment on the mixed solution obtained in the step (1) at room temperature for 1h, centrifuging after the treatment to obtain a product, washing the product for 2 times by using N, N-dimethylformamide and ethanol respectively, and then carrying out vacuum drying at 60 ℃ for 12h to obtain the metal organic framework catalyst, and storing the metal organic framework catalyst in a normal-temperature sealed container.
The application of the catalyst in degrading methylene blue sewage comprises the following steps:
99mL of ultrapure water +1mL of a methylene blue solution with a concentration of 3.2g/L (group 1), 89mL of ultrapure water +1mL of a methylene blue solution with a concentration of 3.2g/L +10mL of a H solution with a concentration of 200mmol/L2O2(group 2), 99mL of ultrapure water +20mgMOFs catalyst +1mL of methylene blue solution with a concentration of 3.2g/L (group 3), 89mL of ultrapure water +20mgMOFs catalyst +1mL of methylene blue solution with a concentration of 3.2g/L +10mL of H with a concentration of 200mmol/L2O2(group 4), after uniformly dispersing and mixing, adjusting the pH of the reaction system to 4.0 by using HCl, uniformly stirring, taking a 'zero' sample, and carrying out oxidative degradation on methylene blue. After mixing and reacting for 1h in a 37 ℃ thermostat, a water sample is taken, the absorbance value is measured, and the influence of different groups on the degradation of methylene blue is obtained as shown in figure 5.
Without being limited to the above embodiments, other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the invention should be construed as equivalents thereof and are intended to be included in the scope of the invention.

Claims (10)

1. A preparation method of an organic dye degradation catalyst based on heterogeneous Fenton-like reaction is characterized by comprising the following steps: the method comprises the following steps:
s1: reacting nickel acetate, cobalt acetate, ferrous acetate and 2-amino terephthalic acid in a solvent to obtain a mixed solution; in the step S1, the mass ratio of the nickel acetate, the cobalt acetate and the ferrous acetate is 1:3: 6-6: 3: 1; the ratio of the amount of the 2-amino terephthalic acid substance to the total amount of the nickel acetate, cobalt acetate and ferrous acetate in the step S1 is 1:2 to 2: 1;
s2: carrying out ultrasonic treatment on the mixed solution to obtain an organic dye degradation catalyst based on heterogeneous Fenton-like reaction;
the ultrasonic treatment conditions are as follows: the ultrasonic power is 400-600W, and the ultrasonic time is 0.5-1.5 h.
2. The method for preparing the catalyst for degrading organic dye based on heterogeneous Fenton-like reaction according to claim 1, wherein: in the step S1, the solvent is at least one of N, N-dimethylformamide and methanol;
the reaction time in the step S1 is 20-40 min;
in step S2, the ultrasonic processing conditions are: the ultrasonic time is 1 h; the temperature was room temperature.
3. The method for preparing the catalyst for degrading organic dye based on heterogeneous Fenton-like reaction according to claim 1, wherein: the reaction temperature in step S1 is room temperature;
the reaction in step S1 is carried out under the condition of stirring, and the stirring speed is 200-400 rpm.
4. The method for preparing the catalyst for degrading organic dye based on heterogeneous Fenton-like reaction according to claim 1, wherein: the specific step of step S1: dissolving nickel acetate, cobalt acetate and ferrous acetate in a solvent to obtain a solution A; dissolving 2-amino terephthalic acid in a solvent to obtain a solution B; then, the solution A and the solution B are mixed and reacted at room temperature under the condition of stirring to obtain a mixed solution.
5. The method for preparing the catalyst for degrading organic dye based on heterogeneous Fenton-like reaction according to claim 4, wherein: the volume ratio of the solvent in the solution A to the solvent in the solution B is 1: 1-3: 1;
the solvent in the solution A and the solution B is at least one of N, N-dimethylformamide and methanol independently;
the volume ratio of the total amount of nickel acetate, cobalt acetate and ferrous acetate in the solution A to the solvent is 1mmol (5-15) mL;
the volume ratio of the 2-amino terephthalic acid substance in the liquid B to the solvent is 1mmol: (4-10) mL.
6. The method for preparing the catalyst for degrading organic dye based on heterogeneous Fenton-like reaction according to claim 1, wherein: after the ultrasonic treatment in the step S2, carrying out subsequent treatment on the system; the subsequent treatment refers to centrifugation, washing and drying.
7. An organic dye degradation catalyst based on heterogeneous Fenton-like reaction obtained by the preparation method of any one of claims 1 to 6.
8. Use of the catalyst for degradation of organic dyes based on heterogeneous fenton-like reaction according to claim 7 for degradation of organic dyes.
9. Use according to claim 8, characterized in that: the method comprises the following steps:
(1) dispersing an organic dye degradation catalyst as defined in claim 7 in water to obtain a dispersion; mixing the dispersion with sewage containing organic dye, adjusting pH, adding H2O2The organic dye is degraded by the reaction.
10. Use according to claim 9, characterized in that: the organic dye is methylene blue;
the dosage ratio of the organic dye degradation catalyst to the organic dye is (100-500) mg: (25-35) mg; the organic dye degradation catalyst and H2O2The dosage ratio of (100-500) mg: (15-25) mmol; the pH is 3-7;
the reaction time is more than or equal to 0.25 h; the reaction temperature is 25-50 ℃.
CN202210081551.XA 2022-01-24 2022-01-24 Organic dye degradation catalyst based on heterogeneous Fenton-like reaction, and preparation and application thereof Pending CN114505101A (en)

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CN115487864A (en) * 2022-05-31 2022-12-20 济南大学 Catalytic GOx @ Fe-MOF @ HNTs tubular micro-nano motor and preparation method and application thereof
CN115487864B (en) * 2022-05-31 2023-09-05 济南大学 Catalytic GOx@Fe-MOF@HNTs tubular micro-nano motor and preparation method and application thereof
CN115106068A (en) * 2022-06-28 2022-09-27 盐城工学院 Preparation method and application of synthetic iron-based metal organic framework material
CN115282964A (en) * 2022-09-05 2022-11-04 华侨大学 Fenton-like reaction catalyst and preparation method and application thereof
CN115282964B (en) * 2022-09-05 2023-05-23 华侨大学 Fenton-like reaction catalyst and preparation method and application thereof

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