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Fiber/CNT(carbon nano tube)/BiFeO3 three-dimensional recyclable efficient catalytic material, as well as preparation and application thereof

A technology of carbon nanotubes and catalytic materials, which is applied in the field of fiber/carbon nanotubes/BiFeO3 three-dimensional recyclable high-efficiency catalytic materials, can solve problems such as unfavorable sustainable development, achieve recycling and reuse, accelerate photocatalytic degradation reactions, improve Dispersion effect

Inactive Publication Date: 2017-05-31
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods currently used to treat wastewater mainly include: physical separation, biodegradation, and chemical decomposition, but these methods have certain limitations and are not conducive to sustainable development.

Method used

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  • Fiber/CNT(carbon nano tube)/BiFeO3 three-dimensional recyclable efficient catalytic material, as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add 150 mg of CNTs to 30 mL of 30% FeCl 2 In the solution, adjust the pH=3, then add 30mL H 2 O 2 , Ultrasonic at room temperature for 0.5h, magnetic stirring at room temperature for 6h, add 500 mL of water, filter with suction and wash with water to neutral, and filter with suction. Vacuum drying at 60°C for 24h to obtain product a;

[0032] Under nitrogen conditions, disperse 1.5 g of product a in 100 mL DMF in a dry three-necked flask, cool in an ice-water bath, add 300 mg of NaH at 0°C, and continue stirring for 20 min. Then, the temperature was gradually increased to 85°C, 2 mL 1-perfluorohexyl iodide was added dropwise, the reaction was ultrasonically conducted for 18 hours, a small amount of water was added to quench the reaction, and then DMF, ethanol and water were centrifuged and washed. The obtained black granular product b was dried in a vacuum oven at 50°C for 96 hours;

[0033] Disperse 1 g of black product b in 50 mL of water, add 300 mg of NaOH, and ultr...

Embodiment 2

[0039] (1) Add 175mg CNTs to 35mL 30% FeCl 2 In the solution, adjust the pH=3, then add 35mL H2O2, ultrasound at room temperature for 1.5h, magnetic stirring at room temperature for 87h, add 500mL of water, wash with suction and water until neutral, and filter with suction. Vacuum drying at 60°C for 24h to obtain product a;

[0040] Under nitrogen conditions, 2.5 g of product a was dispersed in 150 mL DMF in a dry three-necked flask, cooled in an ice-water bath, and NaH 411 mg was added at 0° C., and stirring was continued for 30 min. Then, the temperature was gradually increased to 88° C., 2.5 mL 1-perfluorohexyl iodide was added dropwise, perfluorohexyl iodide was ultrasonically reacted, and ultrasonic reaction was performed for 20 h. A small amount of water was added to quench the reaction, followed by centrifugal washing with DMF, ethanol and water. The obtained black granular product b was dried in a vacuum oven at 50°C for 96 hours;

[0041] Disperse 1.5 g of product b in 5...

Embodiment 3

[0047] (1) Add 200mg CNTs to 40mL 30% FeCl 2 In the solution, adjust pH=3, then add 40mL H2O2, ultrasonic at room temperature for 2h, magnetic stirring at room temperature for 8h, add 500mL of water, wash with suction and water until it is neutral, and filter with suction. Vacuum drying at 60°C for 24h to obtain product a;

[0048] Under nitrogen conditions, 3g of product a was dispersed in 200mL DMF in a dry three-necked flask, cooled in an ice-water bath, 522mg of NaH was added at 0°C, and stirring was continued for 30 minutes. Then, the temperature was gradually increased to 90°C, and 3 mL of 1-perfluorohexyl iodide was added dropwise, and perfluorohexyl iodide was ultrasonically reacted for 24 hours. A small amount of water was added to quench the reaction, followed by centrifugal washing with DMF, ethanol and water. The obtained black granular product b was dried in a vacuum oven at 50°C for 96 hours;

[0049] Disperse 2 g of product b in 50 mL of water, add 438 mg of NaOH, ...

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Abstract

The invention relates to a fiber / CNT(carbon nano tube) / BiFeO3 three-dimensional recyclable efficient catalytic material, as well as preparation and application thereof. A three-dimensional continuous structure is constructed on the surface of textile fiber by CNTs, and surfaces of the CNTs are loaded with nano BiFeO3. Preparation comprises: soaking fiber in a dispersion liquid containing CNT compound BiFeO3 and polyethylene glycol 2000, lasting reaction for 2-4 h at 60-80 DEG C, drying, washing with water, repeating processes of soaking, drying and washing with water for 3-5 times, and obtaining the material. The fiber / CNT / BiFeO3 three-dimensional recyclable efficient catalytic material is low in cost, the preparation method is simple, requirements on equipment is are low, and the operability is good; a water treatment agent provided by the invention can remove high-concentration organic pollutants in water, is suitable for advanced treatment of various wastewater, protects the environment, avoids secondary pollution, and has the advantages of being antibacterial, removing odor, absorbing other heavy metal ions, and the like.

Description

Technical field [0001] The invention belongs to the field of catalyst materials and their preparation and application, and particularly relates to a fiber / carbon nanotube / BiFeO 3 Three-dimensional recyclable high-efficiency catalytic material and its preparation and application. Background technique [0002] Only about 10% of the world's water is directly used by humans. The largest share, 70% is used in agriculture, and the remaining 20% ​​is used in industry. China's emissions are about 20% of the world's pollution, and it only gets 5% of the world's fresh water. Therefore, solving the pollution problem has been on the agenda. In the processing of textile printing and dyeing, leather, and papermaking industries, a large number of environmentally polluting and harmful additives are used. Most of these additives are discharged in liquid form to pollute the environment. They have poor biodegradability, high toxicity, and high free formaldehyde content. The content of heavy meta...

Claims

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Application Information

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IPC IPC(8): B01J31/28C02F1/30C02F1/72C02F1/28C02F101/30C02F101/20
CPCY02W10/37B01J31/28C02F1/283C02F1/30C02F1/725C02F2101/20C02F2101/30C02F2303/02C02F2303/04C02F2305/10
Inventor 刘保江张俊张帅王莉莉
Owner DONGHUA UNIV
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