CN112076750A - Preparation of ferroferric oxide modified carbon nanotube reduced graphene oxide compound and application of ferroferric oxide modified carbon nanotube reduced graphene oxide compound in removal of tetrabromobisphenol A in water - Google Patents
Preparation of ferroferric oxide modified carbon nanotube reduced graphene oxide compound and application of ferroferric oxide modified carbon nanotube reduced graphene oxide compound in removal of tetrabromobisphenol A in water Download PDFInfo
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- CN112076750A CN112076750A CN201910510219.9A CN201910510219A CN112076750A CN 112076750 A CN112076750 A CN 112076750A CN 201910510219 A CN201910510219 A CN 201910510219A CN 112076750 A CN112076750 A CN 112076750A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 23
- -1 ferroferric oxide modified carbon nanotube Chemical class 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 14
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 150000001875 compounds Chemical class 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 13
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 8
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 8
- 239000001632 sodium acetate Substances 0.000 claims abstract description 8
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 8
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 7
- 239000002244 precipitate Substances 0.000 claims abstract description 7
- 230000015556 catabolic process Effects 0.000 claims abstract description 6
- 238000006731 degradation reaction Methods 0.000 claims abstract description 6
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000002071 nanotube Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 7
- 231100000719 pollutant Toxicity 0.000 abstract description 7
- 238000000227 grinding Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000001291 vacuum drying Methods 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000004005 microsphere Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 229910017912 NH2OH Inorganic materials 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000598 endocrine disruptor Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
- B01J21/185—Carbon nanotubes
-
- B01J35/33—
-
- 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
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2101/345—Phenols
-
- 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
- C02F2101/36—Organic compounds containing halogen
-
- 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 discloses a method for preparing a ferroferric oxide modified carbon nano tube/reduced graphene oxide compound and application of the ferroferric oxide modified carbon nano tube/reduced graphene oxide compound in removing tetrabromobisphenol A in water, which comprises the following steps: dispersing 20 mg of graphene oxide and 20 mg of carbon nano tubes in 60 ml of ethylene glycol, treating for 3 hours by using an ultrasonic cell disruptor to form uniform dispersion liquid, and then adding 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate,adding 0.45 g polyethylene glycol into the dispersion, and magnetically stirring for 30 min; transferring the mixed dispersion liquid into a reaction kettle, and reacting for 10 hours at 200 ℃; repeatedly cleaning the obtained precipitate deionized water and ethanol, and vacuum drying at 60 deg.C for 12 hr; and grinding the final product for later use. The catalyst prepared by the invention can rapidly degrade tetrabromobisphenol A, and the degradation rate constant is more than 0.5min‑1And is expected to be used for removing pollutants difficult to degrade.
Description
Technical Field
The invention relates to a method for preparing a ferroferric oxide modified carbon nanotube/reduced graphene oxide compound and application of the ferroferric oxide modified carbon nanotube/reduced graphene oxide compound in treatment of tetrabromobisphenol A (TBBPA) in wastewater.
Background
Along with the development of economic globalization, various waste gases, waste water and waste liquid are continuously discharged, so that the ecological environment is destroyed, and serious pollution is caused to water resources. Therefore, it is of great significance to explore efficient and economic sewage treatment technology.
The existing biological treatment method is difficult to treat substances with poor biodegradability and relative molecular mass from thousands to tens of thousands, and advanced oxidation methods (AOPs) can directly mineralize the substances or improve the biodegradability of pollutants through oxidation, have great advantages in the treatment aspect of trace harmful chemical substances such as environmental hormones and the like, can completely mineralize or decompose most organic substances, and have good application prospects. The Fenton technology is a commonly used advanced oxidation technology, has the advantages of simple operation process, easy reaction, low operation cost, low equipment investment, environmental friendliness and the like, and is commonly used for removing organic pollutants. However, the amount of the reagent used during the operation is large, and Fe is excessively contained2+The COD in the treated wastewater is increased and secondary pollution is generated; the mineralization of organic matters is insufficient, and the formed intermediate product is often more toxic; the pH range is 2.0-4.0, and the range is too narrow, so that the range of organic pollutant treatment is limited. In view of the disadvantages of the conventional Fenton technique in practical application, many Fenton-like techniques based on the conventional Fenton technique have been developed in recent yearsHas better application prospect.
In fenton-like technology, the choice of catalyst is very critical. Ferroferric oxide (Fe)3O4) Has strong magnetism, and can be used in medicine, metallurgy, electronics, textile, etc., and used as catalyst, polishing agent, pigment of paint and ceramics, glass colorant, etc. Therefore, in order to obtain a more efficient fenton-like catalyst, the ferroferric oxide needs to be modified.
Carbon Nanotubes (CNTs) as one-dimensional nanomaterials have light weight, perfect hexagonal structural connection, and many unusual mechanical, electrical, and chemical properties, and their broad application prospects have been continuously shown in recent years as the research on CNTs and nanomaterials proceeds. Reduced graphene oxide (rGO) is widely used due to its high specific surface area, excellent mechanical strength, abundant surface functional groups, high electrical conductivity and certain hydrophobic characteristics.
Thus, CNT and rGO co-modify Fe3O4The ternary composite material is expected to realize the synergistic enhancement of the catalytic performance of the catalyst, so that the organic pollutants can be rapidly and efficiently degraded.
Disclosure of Invention
The invention aims to provide a method for preparing CNT/rGO modified Fe3O4The method of the compound and the application thereof in water treatment can realize the high-efficiency degradation of endocrine disrupters in an aquatic system in a shorter time and in a wider pH range.
The invention provides a method for preparing CNT/rGO modified Fe3O4A method of compounding comprising the steps of:
(1) and dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruptor for later use.
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate, 0.45 g of polyethylene glycol were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min to be used.
(3) Transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃.
(4) And (4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol, and then drying the sample in vacuum at 60 ℃ for 12 hours.
(5) And (4) magnetically recovering the sample obtained in the step (4) and grinding the sample for standby.
The graphene oxide used in the step (1) is prepared by a Hummers method, and the ethylene glycol is either industrially pure or analytically pure.
FeCl used in the step (2)3·6H2O, sodium acetate and polyethylene glycol are either industrially pure or analytically pure.
And (5) sealing and storing the finally obtained catalyst at normal temperature.
The novel catalyst prepared by the method of the invention is characterized in that: the carbon nano tube plays a role of a carrier in the compound and can effectively inhibit Fe3O4The agglomeration of the magnetic particles ensures that the active microspheres are fully dispersed, and the strong crosslinking performance of the active microspheres and the pollutants promotes the mass transfer of the pollutants to the surface of the catalyst. The reduced graphene oxide has a certain hydrophobic effect, and the utilization rate of free radicals can be improved.
The invention has the advantages that: the carbon nano tube with large specific surface area fixes the ferroferric oxide magnetic particles, prevents the particles from agglomerating, greatly enhances the enrichment of the material on pollutants in a water body and accelerates the mass transfer speed of the pollutants to the catalyst. The addition of the reduced graphene oxide improves the utilization rate of free radicals. The catalyst prepared by the invention has high-efficiency catalytic performance, can adapt to a wider pH range, is easy to separate from a reaction system after being degraded, and is suitable for removing various pollutants.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.
Example 1:
(1) and dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruptor for later use.
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate, 0.45 g of polyethylene glycol were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min to be used.
(3) Transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃.
(4) And (4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol, and then drying the sample in vacuum at 60 ℃ for 12 hours.
(5) And (4) magnetically recovering the sample obtained in the step (4) and grinding the sample for standby.
Modifying the prepared CNT/rGO with Fe3O4The compound is placed under a Transmission Electron Microscope (TEM) to observe the morphology of the material, and Fe is found3O4The magnetic microspheres are attached to the rGO and CNTs without significant agglomeration. The magnetic microsphere diameter was about 250-300 nm, indicating CNT/rGO @ Fe3O4The complex of (a) is synthesized.
Example 2:
(1) and dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruptor for later use.
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate, 0.45 g of polyethylene glycol were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min to be used.
(3) Transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃.
(4) And (4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol, and then drying the sample in vacuum at 60 ℃ for 12 hours.
(5) And (4) magnetically recovering the sample obtained in the step (4) and grinding the sample for standby.
The prepared catalyst is used for the research of degrading tetrabromobisphenol A (TBBPA), and the catalytic performance of the catalyst is verified. 20 mg L-1TBBPA (b: (20 mL) of the solution was placed in a 50 mL Erlenmeyer flask, to which 10.0 mg of the prepared catalyst was added. By adding 0.1M of H2SO4Or NaOH to adjust the pH of the solution to a range of 3.00-9.00, and adding 4.0 mM NH2OH to regulate the reaction rate, and H is added2O2(5.0-10.0 mM) to initiate the Fenton reaction. During the whole reaction process, the reaction solution is placed in a shaking table for 250 r min-1All tests were performed at room temperature. At given time intervals, 1.0 mL of sample was collected, 0.5 mL of methanol was immediately added to quench the active free radicals, and the remaining solid particles were then removed by filtration through a 0.22 micron filter and the final sample obtained was analyzed for changes in TBBPA concentration. The change of TBBPA concentration is tested by high performance liquid chromatography, and the degradation rate constant is more than 0.5min-1。，
Example 3:
(1) and dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruptor for later use.
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate, 0.45 g of polyethylene glycol were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min to be used.
(3) Transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃.
(4) And (4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol, and then drying the sample in vacuum at 60 ℃ for 12 hours.
(5) And (4) magnetically recovering the sample obtained in the step (4) and grinding the sample for standby.
The catalysts are respectively selected from Fe3O4、CNT/Fe3O4、rGO/Fe3O4And a final composite catalyst, the BPA in the example 2 is subjected to catalytic degradation under the same conditions, and the degradation is found to accord with a quasi first-order kinetic equation, wherein kinetic constants are 0.1634, 0.22073, 0.29635 and 0.51333 min-1The reaction rate of the composite catalyst is obviously superior to that of other catalysts, and the modified composite catalyst is provedThe composite catalyst has excellent catalytic performance.
Example 4:
(1) and dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruptor for later use.
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate, 0.45 g of polyethylene glycol were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min to be used.
(3) Transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃.
(4) And (4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol, and then drying the sample in vacuum at 60 ℃ for 12 hours.
(5) And (4) magnetically recovering the sample obtained in the step (4) and grinding the sample for standby.
The catalyst used in example 2 was repeatedly washed three times with deionized water and ethanol, dried under vacuum at 60 ℃ and used again to degrade TBBPA, and it was found that the removal efficiency remained at a very high level (94%) after 30 min. The above process is repeated to find that the TBBPA removal rate of the catalyst is still more than 85 percent after the catalyst is repeatedly used for 5 times, which indicates that the composite catalyst has good reusability.
Claims (3)
1. A method for preparing a heterogeneous Fenton catalyst of a ferroferric oxide modified carbon nanotube/reduced graphene oxide compound is characterized by comprising the following steps:
(1) dispersing 20 mg of graphene oxide and 20 mg of carbon nanotubes in 60 ml of ethylene glycol, and carrying out ultrasonic treatment for 3 hours by using an ultrasonic cell disruption instrument for later use;
(2) 0.46 g of FeCl3·6H2O, 1.7 g of sodium acetate and 0.45 g of polyethylene glycol are added to the dispersion in the step (1), and the mixture is magnetically stirred for 30 min for standby;
(3) transferring the dispersion liquid in the step (2) into a 100 mL polytetrafluoroethylene reaction kettle, and reacting for 10h at 200 ℃;
(4) after the reaction solution in the step (3) is cooled to room temperature, repeatedly washing the generated precipitate with deionized water and ethanol to remove residual reagent, and then drying the sample in vacuum at 60 ℃ for 12 hours;
(5) and (5) magnetically recovering the sample obtained in the step (4) to obtain the ferroferric oxide modified carbon nanotube/reduced graphene oxide compound.
2. The preparation method according to claim 1, wherein reduced graphene oxide is wound around the carbon nanotubes in the sample generated in the step (5), and ferroferric oxide is uniformly dispersed on the walls of the nanotubes and the surfaces of the reduced graphene oxide.
3. The catalyst obtained by the preparation method according to claim 1 is applied to Fenton-like fields, and is characterized in that the catalyst can rapidly degrade tetrabromobisphenol A, and the degradation rate constant is more than 0.5min-1。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910510219.9A CN112076750A (en) | 2019-06-13 | 2019-06-13 | Preparation of ferroferric oxide modified carbon nanotube reduced graphene oxide compound and application of ferroferric oxide modified carbon nanotube reduced graphene oxide compound in removal of tetrabromobisphenol A in water |
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| CN201910510219.9A CN112076750A (en) | 2019-06-13 | 2019-06-13 | Preparation of ferroferric oxide modified carbon nanotube reduced graphene oxide compound and application of ferroferric oxide modified carbon nanotube reduced graphene oxide compound in removal of tetrabromobisphenol A in water |
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Application publication date: 20201215 |