CN112452301A - Copper ferrite-metal organic framework structure composite material and preparation method and application thereof - Google Patents
Copper ferrite-metal organic framework structure composite material and preparation method and application thereof Download PDFInfo
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
- B01J20/0229—Compounds of Fe
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0233—Compounds of Cu, Ag, Au
- B01J20/0237—Compounds of Cu
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28009—Magnetic properties
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F2101/105—Phosphorus compounds
Abstract
The invention provides a copper ferrite-metal organic framework structure composite material, a preparation method and application thereof, belonging to the field of inorganic-organic hybrid materials. The composite material is CuFe2O4MIL-101 (Fe). The invention also provides a preparation method of the copper ferrite-metal organic framework structure composite material, which comprises the following steps: adding terephthalic acid and ferric chloride into an N, N-dimethylformamide solution, stirring, fully dispersing, adding copper ferrite, carrying out ultrasonic treatment, and continuously stirring to obtain a mixed solution; putting the mixed solution into a reaction kettle at the speed of 2 ℃/minRaising the temperature to 110 ℃ at the clock speed, and keeping the temperature for 20 hours to obtain a mixture; and carrying out magnetic separation, washing and drying on the obtained mixture to obtain the copper ferrite-metal organic framework structure composite material. The prepared copper ferrite-metal organic framework structure composite material can be used as a high-selectivity adsorbent to remove phosphate, and has a good separation and recovery effect.
Description
Technical Field
The invention belongs to the field of inorganic-organic hybrid materials, and particularly relates to a copper ferrite-metal organic framework structure composite material as well as a preparation method and application thereof.
Background
Phosphorus is an indispensable important element for organisms, and the metabolic processes of the organisms all need the participation of the phosphorus. However, excessive phosphate can cause eutrophication of water bodies, so that algae and other plankton are rapidly propagated, dissolved oxygen in the water bodies is reduced, fishes or other plankton die greatly, biological diversity in aquatic ecosystems is reduced, water quality is affected, and water resources are damaged. China is a country with serious shortage of water resources and only occupies 1/4 of the world. The problem of water resources becomes a great problem which must be seriously solved in the process of realizing the strategy of sustainable development in China. And the phosphate is considered as a key element for causing and controlling the eutrophication of the water body, so that the effective removal of the phosphate from the water body has important significance for preventing and controlling the eutrophication of the water body and is an important task for preventing and controlling the water pollution.
The adsorption method for removing phosphate is mainly realized through electrostatic attraction and coordination exchange, phosphate radicals are adsorbed to the surface of the adsorbent through the large specific surface area and the selectivity to phosphate of the adsorbent, so that the aim of purification is fulfilled. But the use of materials is limited due to the difficulty in recycling most of the adsorbent materials.
The copper ferrite has a uniform hollow spherical structure, excellent magnetism and stability, and can be effectively collected by means of an external magnetic field, so that secondary pollution of the powder composite adsorbent to a water body during pollutant degradation is avoided. Metal Organic Framework Structures (MOFs) have the advantages of large specific surface area, regular pore structure, modifiability and the like, and are widely concerned in the adsorption field; the larger specific surface area is beneficial to adsorbing pollutants and is also beneficial to uniformly dispersing other components on the surface for modification.
At present, the existing composite material has the problems of low efficiency of adsorbing and removing phosphate and difficult separation and recovery of a powder adsorbent, and no report is found in the research of applying the composite material to adsorbing and removing phosphate at present.
Disclosure of Invention
The invention aims to provide a copper ferrite-metal organic framework structure composite material, a preparation method and application thereof.
The invention firstly provides a copper ferrite-metal organic framework structure composite material, which is prepared from the following components in parts by weight: CuFe2O4/MIL-101(Fe)。
Preferably, in the composite material, CuFe2O4And MIL-101(Fe) in a mass ratio of (0.4-1.5): 1.
the invention also provides a preparation method of the copper ferrite-metal organic framework structure composite material, which comprises the following steps:
the method comprises the following steps: adding terephthalic acid and ferric chloride into an N, N-dimethylformamide solution, stirring, fully dispersing, adding copper ferrite, carrying out ultrasonic treatment, and continuously stirring to obtain a mixed solution;
step two: putting the mixed solution in the step one into a reaction kettle, heating to 110 ℃ at the speed of 2 ℃/min, and keeping for 20 hours to obtain a mixture;
step three: and (4) carrying out magnetic separation, washing and drying on the mixture obtained in the step two to obtain the copper ferrite-metal organic framework structure composite material.
Preferably, the method for preparing copper ferrite comprises the following steps: dissolving copper chloride and ferric nitrate in deionized water, adding sodium citrate, urea and polyacrylamide, stirring for 30-60 minutes to obtain a mixed solution, then putting the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, heating to 200 ℃ at the speed of 2 ℃/minute, keeping for 8 hours, then cooling to room temperature, and carrying out post-treatment to obtain the copper ferrite.
Preferably, the copper ferrite is a hollow sphere, the pore diameter is 2.65nm, the pore volume is 0.27cm3/g, and the specific surface area is 43.7m 2/g.
Preferably, in the step, the mass ratio of the terephthalic acid to the ferric chloride to the copper ferrite is (0.22-0.38): (0.72-1.26): (0.24-0.48).
Preferably, the stirring time for adding the terephthalic acid and the ferric trichloride in the first step is 60 to 90 minutes,
the stirring speed is 300-350 r/min.
Preferably, the adding of the copper ferrite in the step one and the continuous stirring are carried out for 10-30 min.
Preferably, the third step is specifically: and (3) performing magnetic separation on the mixture obtained in the second step, collecting powder, washing the powder for 3 times by using N, N-dimethylformamide and ethanol respectively, and drying the powder at the temperature of 80-150 ℃ for 8-12 hours to obtain the copper ferrite-metal organic framework structure composite material.
The invention also provides application of the copper ferrite-metal organic framework structure composite material as an adsorbent in the aspect of adsorbing phosphate.
The invention has the advantages of
The invention firstly provides a copper ferrite-metal organic framework structure composite material, which is represented as follows: CuFe2O4MIL-101(Fe), due to CuFe in the composite material2O4The material has good magnetism and stability, meanwhile, the MIL-101(Fe) has a large specific surface area and a stable chemical structure, and the selective adsorption performance is strong, so that the material can achieve a good separation and recovery effect while simultaneously realizing high selective adsorption of phosphate, and the adsorbent has a high reutilization rate.
The invention also provides a copper ferrite-metalThe preparation method of the organic framework structure composite material comprises the step of adding CuFe in the preparation process of MIL-101(Fe)2O4Uniformly dispersed in the solution of the metal oxide, and stirred vigorously, and the MIL-101(Fe) is favorable for CuFe due to larger specific surface area and strong adsorption property2O4The uniform dispersion and the stirring can ensure the CuFe2O4The dispersion is more uniform, and the structure of MIL-101(Fe) cannot be damaged, so that the obtained composite material has extremely strong magnetic separation effect and better phosphate adsorption capacity. Meanwhile, the method of the invention is simpler, the raw materials are easy to obtain, and the CuFe2O4The dispersion is uniform, the adsorbent is stable, the adsorption effect is good, and the time and the cost are saved.
The invention also provides application of the copper ferrite-metal organic framework structure composite material as an adsorbent in selectively adsorbing phosphate, the adsorbent can be completely separated from a reaction solution in a very short time by using a magnet and can better remove the phosphate, and experimental results show that: by adopting the adsorption system, after the reaction is carried out for 120 minutes, the adsorption efficiency of the phosphate reaches 96.2 percent. Furthermore, CuFe2O4MIL-101(Fe) is not interfered in pH 2-12, and can be desorbed with sodium hydroxide solution for 4 times, and the adsorption effect can be maintained stable and high efficiency>75.0%). After the water sample is applied to an actual water sample, the treatment effect reaches the standard of the world health organization.
Drawings
FIG. 1 is a 45% CuFe prepared in example 2 of the present invention2O4Magnetic separation effect and hysteresis loop of MIL-101(Fe) material under applied magnetic field for 1 min.
FIG. 2 is a 45% CuFe prepared in example 2 of the present invention2O4The effect of the MIL-101(Fe) material on the adsorption of phosphorus under different pH conditions is shown.
FIG. 3 is a 45% CuFe prepared in example 2 of the present invention2O4Effect graphs of 4 adsorption-desorption cycles of continuous execution of the/MIL-101 (Fe) material under different desorption solutions.
FIG. 4 is a 45% CuFe prepared in example 2 of the present invention2O4Phosphorus in actual water sample treatment of/MIL-101 (Fe) materialAnd (5) an adsorption effect graph.
Detailed Description
The invention firstly provides a copper ferrite-metal organic framework structure composite material, which is prepared from the following components in parts by weight: CuFe2O4MIL-101 (Fe). In the composite material, CuFe2O4And MIL-101(Fe) is preferably (0.4-1.5): 1.
the invention also provides a preparation method of the copper ferrite-metal organic framework structure composite material, which comprises the following steps:
the method comprises the following steps: adding terephthalic acid and ferric chloride into an N, N-dimethylformamide solution, stirring, fully dispersing, adding copper ferrite, stirring, performing ultrasonic treatment, and continuously stirring to obtain a mixed solution;
step two: putting the mixed solution in the step one into a reaction kettle, heating to 110 ℃ at the speed of 2 ℃/min, and keeping for 20 hours to obtain a mixture;
step three: and (4) carrying out magnetic separation, washing and drying on the mixture obtained in the step two to obtain the copper ferrite-metal organic framework structure composite material.
According to the invention, terephthalic acid and ferric trichloride are dissolved in N, N-dimethylformamide solution and stirred, and the addition sequence of the raw materials is preferably as follows: firstly adding terephthalic acid, then adding ferric trichloride, finally dissolving in N, N-dimethylformamide solution, and starting stirring, wherein the stirring time is preferably 60-90 minutes, and the stirring speed is preferably 300-350 revolutions per minute.
According to the invention, the copper ferrite is added into the solution to be vigorously stirred, the stirring time is preferably 10-30 minutes, the stirring speed is preferably 300-350 r/min, then the ultrasonic treatment is carried out, the ultrasonic treatment time is preferably 30 minutes, and the stirring is continuously carried out for 10-30 minutes, so as to obtain a mixed solution; the mass ratio of the terephthalic acid to the ferric chloride to the copper ferrite is preferably (0.22-0.38): (0.72-1.26): (0.24-0.48), more preferably 0.3: 0.99: 0.36.
according to the present invention, the method for producing copper ferrite preferably comprises:
dissolving copper chloride and ferric nitrate in deionized water, sequentially adding sodium citrate, urea and polyacrylamide while continuously stirring, stirring for 30-60 minutes to obtain a uniform mixed solution, then putting the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, heating to 200 ℃ at the speed of 2 ℃/minute, keeping for 8 hours, then cooling to room temperature, and washing the synthesized copper ferrite by using deionized water and ethanol; firstly, separating a solution and a solid in a reaction kettle, washing the solid with ethanol at normal temperature for 30 minutes for 3 times, and carrying out magnetic separation; washing with deionized water at normal temperature for 30min, 3 times, magnetically separating, and vacuum drying at 60 deg.C overnight to obtain copper ferrite; the copper chloride: iron nitrate: sodium citrate: urea: the mass ratio of polyacrylamide is preferably 0.0906:0.522:0.941:0.288: 0.24. The copper ferrite is a hollow sphere, the pore diameter is 2.65nm, the pore volume is 0.27cm3/g, and the specific surface area is 43.7m 2/g.
According to the invention, after the mixed solution is obtained in the first step, the mixed solution is transferred into a reaction kettle, the temperature is raised to 110 ℃ at the speed of 2 ℃/min, and the temperature is kept for 20 hours to obtain a mixture;
the resulting surface physicochemical properties of MIL-101(Fe) in the mixture were: average pore diameter: 2.65 nm; BET specific surface area: 747.90 square meters per gram; total pore volume: 0.50 cc/g; pore type: and (4) mesoporous.
According to the invention, the mixture is subjected to magnetic separation to collect powder, the powder is obtained by washing 3 times with N, N-dimethylformamide and ethanol respectively, and the powder is dried for 8-12 hours at 80-150 ℃ to obtain the copper ferrite-metal organic framework structure composite material.
The invention also provides application of the copper ferrite-metal organic framework structure composite material as an adsorbent in the aspect of adsorbing phosphate. The specific method comprises the following steps:
mixing CuFe2O4Putting MIL-101(Fe) adsorbent into phosphate solution, stirring for 120 min in the dark until adsorption balance, taking out about 3 ml of sample at 2,4,6,8,10,20,40,60,90 and 120 min, adding magnet to separate the adsorbent, taking supernatant, measuring the concentration of phosphate by a national standard ammonium molybdate spectrophotometry, and calculating the adsorption of CuFe2O4MIL-101(Fe) ComplexThe amount of phosphate on the material.
CuFe of the invention2O4The reason why the reaction effect of selectively adsorbing phosphate by/MIL-101 (Fe) is excellent is that:
MIL-101(Fe) with high surface area can enable the surface of the MIL-101(Fe) to have more active sites, and the copper ferrite and the MIL-101(Fe) are stirred vigorously to form a suspension which is distributed uniformly, so that CuFe is synthesized finally2O4MIL-101(Fe), the hollow spherical copper ferrite can realize the magnetic separation and recovery of the composite material, and MIL-101(Fe) has more adsorption sites for adsorbing phosphate. The combination of the two makes more active sites exposed, and simultaneously enhances the affinity of the adsorbent to phosphate, so that the adsorption efficiency is improved.
The present invention is described in further detail below with reference to specific examples, in which the starting materials are all commercially available.
Example 1
1.26 g of FeCl3·6H2Dissolving O and 0.38 g of terephthalic acid in 30 ml of DMF, starting stirring at the stirring speed of 300 revolutions per minute, adding 0.24 g of self-made hollow spherical copper ferrite after stirring for 30 minutes, stirring for 20 minutes, performing ultrasonic treatment for 30 minutes, and continuing stirring for 20 minutes to obtain a mixed solution;
and transferring the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, putting the reaction kettle into a temperature programming oven, heating to 110 ℃ at the speed of 2 ℃/min, keeping the temperature for 20 hours, taking out the cooled mixture, carrying out magnetic separation to collect powder, washing the powder for 3 times respectively by using DMF (dimethyl formamide) and ethanol, drying the powder for 12 hours at 80 ℃, and obtaining the copper ferrite-metal organic framework structure composite material with the copper ferrite content accounting for 30 percent of the total mass of the composite material.
The composite material obtained in example 1 had an adsorption efficiency of 78.5% for phosphorus at an initial phosphate concentration of 5 mg/l.
Example 2
0.99 g FeCl3·6H2Dissolving O and 0.30 g terephthalic acid in 30 ml DMF, starting stirring at a stirring rate of 300 rpm, and after stirring for 30 minutes, adding 0.36 g of maleic anhydrideStirring the prepared hollow spherical copper ferrite for 20 minutes, then carrying out ultrasonic treatment for 30 minutes, and continuing for 20 minutes to obtain a mixed solution;
and transferring the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, putting the reaction kettle into a temperature programming oven, heating to 110 ℃ at the speed of 2 ℃/min, keeping the temperature for 20 hours, taking out the cooled mixture, carrying out magnetic separation to collect powder, washing the powder for 3 times respectively by using DMF (dimethyl formamide) and ethanol, drying the powder for 12 hours at 80 ℃, and obtaining the copper ferrite-metal organic framework structure composite material with the copper ferrite content accounting for 45 percent of the total mass of the composite material.
FIG. 1 is a 45% CuFe prepared in example 2 of the present invention2O4Magnetic separation effect and hysteresis loop of MIL-101(Fe) material under applied magnetic field for 1 min. FIG. 1 illustrates: CuFe2O4the/MIL-101 (Fe) composite material has excellent magnetic separation capability.
FIG. 2 is a 45% CuFe prepared in example 2 of the present invention2O4The effect of the MIL-101(Fe) material on the adsorption of phosphorus under different pH conditions is shown. FIG. 2 illustrates: 45% CuFe in the pH range of 2-122O4The phosphorus adsorption effect of the/MIL-101 (Fe) material is basically not influenced and exceeds 88.4 percent, which shows that the material is suitable for a wide pH range.
FIG. 3 is a 45% CuFe prepared in example 2 of the present invention2O4The effect graph of 4 adsorption-desorption cycles of the/MIL-101 (Fe) material in different desorption solutions is continuously carried out. And the magnetic separation and recovery effect of the adsorbent is better in 4 times of continuous experiments, the recovery rates of three times are respectively 95.5%, 95.4% and 95.3%, and the magnetic separation and recovery method has extremely high separation and recovery efficiency compared with the traditional centrifugal recovery powder adsorbent. FIG. 3 illustrates: the effect of 4 times of continuous experiments is stable, the desorption effect of 0.1 mol/L NaOH solution is optimal, and the adsorption efficiency of continuous four times is 96.0%, 89.1%, 86.6% and 75.0%. The magnetic recovery shows that the material has stable recycling performance and certain practical value.
FIG. 4 is a 45% CuFe prepared in example 2 of the present invention2O4The phosphorus adsorption effect of the/MIL-101 (Fe) material in the actual water sample treatment is shown. FIG. 4 illustrates: CuFe2O4The phosphorus removal performance of the MIL-101(Fe) material in the actual water body can be kept at a higher level>84.7%), the phosphorus content after treatment meets the emission standards of the world health organization, which indicates that the application range is wide.
Example 3
0.72 g FeCl3·6H2Dissolving O and 0.22 g of terephthalic acid in 30 ml of DMF, starting stirring at the stirring speed of 300 revolutions per minute, adding 0.48 g of self-made hollow spherical copper ferrite after stirring for 30min, stirring for 20min, performing ultrasonic treatment for 30min, and continuing for 20min to obtain a mixed solution;
and transferring the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, putting the reaction kettle into a temperature programming oven, heating to 110 ℃ at the speed of 2 ℃/min, keeping the temperature for 20 hours, taking out the cooled mixture, carrying out magnetic separation to collect powder, washing the powder for 3 times respectively by using DMF (dimethyl formamide) and ethanol, drying the powder for 12 hours at 80 ℃, and obtaining the copper ferrite-metal organic framework structure composite material with the copper ferrite content accounting for 60 percent of the total mass of the composite material.
The composite material obtained in example 3 had an adsorption efficiency of 68.3% for phosphorus at an initial phosphate concentration of 5 mg/l.
Claims (10)
1. A copper ferrite-metal organic framework structure composite material is characterized in that the composite material is as follows: CuFe2O4/MIL-101(Fe)。
2. The copper ferrite-metal organic framework structure composite material as claimed in claim 1, wherein in the composite material, CuFe2O4And MIL-101(Fe) in a mass ratio of (0.4-1.5): 1.
3. the method for preparing the copper ferrite-metal organic framework structure composite material according to claim 1, which comprises the following steps:
the method comprises the following steps: adding terephthalic acid and ferric chloride into an N, N-dimethylformamide solution, stirring, fully dispersing, adding copper ferrite, carrying out ultrasonic treatment, and continuously stirring to obtain a mixed solution;
step two: putting the mixed solution in the step one into a reaction kettle, heating to 110 ℃ at the speed of 2 ℃/min, and keeping for 20 hours to obtain a mixture;
step three: and (4) carrying out magnetic separation, washing and drying on the mixture obtained in the step two to obtain the copper ferrite-metal organic framework structure composite material.
4. The method for preparing a copper ferrite-metal organic framework structure composite material according to claim 3, wherein the method for preparing copper ferrite comprises the following steps: dissolving copper chloride and ferric nitrate in deionized water, adding sodium citrate, urea and polyacrylamide, stirring for 30-60 minutes to obtain a mixed solution, then putting the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, heating to 200 ℃ at the speed of 2 ℃/minute, keeping for 8 hours, then cooling to room temperature, and carrying out post-treatment to obtain the copper ferrite.
5. The method for preparing the composite material with the copper ferrite-metal organic framework structure as claimed in claim 3, wherein the copper ferrite is a hollow sphere with a pore diameter of 2.65nm, a pore volume of 0.27cm3/g and a specific surface area of 43.7m 2/g.
6. The method for preparing a copper ferrite-metal organic framework structure composite material according to claim 3, wherein the mass ratio of the first terephthalic acid, the ferric chloride and the copper ferrite is preferably (0.22-0.38): (0.72-1.26): (0.24-0.48).
7. The method for preparing a copper ferrite-metal organic framework structure composite material according to claim 3, wherein the stirring time for adding terephthalic acid and ferric trichloride is 60-90 minutes,
the stirring speed is 300-350 r/min.
8. The method for preparing a copper ferrite-metal organic framework structure composite material according to claim 3, wherein the time for adding the copper ferrite and continuing stirring in the first step is 10-30 min.
9. The method for preparing the copper ferrite-metal organic framework structure composite material according to claim 3, wherein the third step is specifically as follows: and (3) performing magnetic separation on the mixture obtained in the second step, collecting powder, washing the powder for 3 times by using N, N-dimethylformamide and ethanol respectively, and drying the powder at the temperature of 80-150 ℃ for 8-12 hours to obtain the copper ferrite-metal organic framework structure composite material.
10. Use of the copper ferrite-metal organic framework structure composite material according to claim 1 as an adsorbent for adsorbing phosphates.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114570425A (en) * | 2022-03-31 | 2022-06-03 | 安徽医科大学 | Modified CuFe2O4Synthetic method and application thereof |
| CN114931926A (en) * | 2022-06-01 | 2022-08-23 | 华中科技大学 | Magnetic hollow material, preparation thereof and application of magnetic hollow material in treatment of chromium-containing sewage |
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| CN109847805A (en) * | 2019-01-04 | 2019-06-07 | 东北师范大学 | A kind of silver bromide (silver)-coppe ferrite-metal-organic framework composite material and preparation method |
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| CN109847805A (en) * | 2019-01-04 | 2019-06-07 | 东北师范大学 | A kind of silver bromide (silver)-coppe ferrite-metal-organic framework composite material and preparation method |
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| 刘华: "基于金属有机骨架材料的除磷吸附剂研发" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570425A (en) * | 2022-03-31 | 2022-06-03 | 安徽医科大学 | Modified CuFe2O4Synthetic method and application thereof |
| CN114570425B (en) * | 2022-03-31 | 2023-05-30 | 安徽医科大学 | Modified CuFe 2 O 4 Synthesis method and application thereof |
| CN114931926A (en) * | 2022-06-01 | 2022-08-23 | 华中科技大学 | Magnetic hollow material, preparation thereof and application of magnetic hollow material in treatment of chromium-containing sewage |
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