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Defective carbon material as well as preparation method and application thereof

A technology of carbon materials and defects, which is applied in the preparation of defective carbon materials and the application field of catalytic decontamination, which can solve the problems of complex equipment systems and achieve the effects of simple preparation process, avoiding secondary pollution and low energy consumption

Pending Publication Date: 2021-11-09
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method needs to provide additional energy, and its equipment system is relatively complicated

Method used

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  • Defective carbon material as well as preparation method and application thereof
  • Defective carbon material as well as preparation method and application thereof
  • Defective carbon material as well as preparation method and application thereof

Examples

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preparation example Construction

[0028] The invention provides a method for preparing a defective carbon material, comprising the following steps:

[0029] The carbon material is subjected to plasma etching to obtain the defective carbon material.

[0030] In the present invention, unless otherwise specified, all preparation materials are commercially available products well known to those skilled in the art.

[0031] In the present invention, the carbon material preferably includes one or more of carbon nanotubes, graphene, biochar, carbon nitride and nitrogen-doped graphene, more preferably carbon nanotubes, most preferably multi-walled Carbon nanotubes: when the carbon material is two or more of the above-mentioned specific options, the present invention does not have any special limitation on the proportion of the above-mentioned specific substances, and it can be mixed according to any proportion.

[0032] Before performing the plasma etching, the present invention preferably further includes spreading ...

Embodiment 1

[0048] According to 3mg / cm 2 The laying amount of the multi-walled carbon nanotubes is spread flat in a glass petri dish, placed in the cabin of the plasma etching machine, the plasma processing equipment is turned on, and the vacuum is evacuated to 10 -1 Pa, introduce high-purity nitrogen gas to adjust the gas flow to keep the pressure in the cabin at 5Pa, turn on the RF power supply and adjust the plasma power to 60W for plasma etching for 10 minutes, turn off the RF power supply after etching, and slowly release nitrogen to the pressure inside and outside the cabin Balance, open the hatch, take out the sample, and obtain the defective carbon material (recorded as PE-10);

[0049] Mix 10mgPE-10, 197mL phenol solution with a mass concentration of 1mg / L, and 3mL potassium persulfate (PMS) aqueous solution with a concentration of 10g / L, and degrade it for 30min under stirring, wherein at 0, 1, 3, Take samples and filter at 5, 7, 10, 15, 20, and 30 minutes, and detect the conce...

Embodiment 2

[0051] According to 4mg / cm 2The laying amount of the multi-walled carbon nanotubes is spread flat in a glass petri dish, placed in the cabin of the plasma etching machine, the plasma processing equipment is turned on, and the vacuum is evacuated to 10 -1 Pa, introduce high-purity nitrogen gas to adjust the gas flow to keep the pressure in the cabin at 7Pa, turn on the RF power supply and adjust the plasma power to 70W for plasma etching for 30 minutes, turn off the RF power supply after etching, and slowly release nitrogen to the pressure inside and outside the cabin Balance, open the hatch, take out the sample, and obtain the defective carbon material (recorded as PE-30);

[0052] 10mgPE-30, 197mL phenol solution with a mass concentration of 1mg / L and 3mL potassium persulfate (PMS) aqueous solution with a concentration of 10g / L were mixed, and the degradation was carried out for 30min under stirring conditions, wherein at 0, 1, 3, Take samples and filter at 5, 7, 10, 15, 20,...

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Abstract

The invention relates to the technical field of advanced sewage treatment, in particular to a preparation method and catalytic pollution removal application of a defective carbon material. The preparation method for the defective carbon material comprises the following step: performing plasma etching on a carbon material to obtain the defective carbon material. The defective carbon material prepared by using the preparation method can effectively activate persulfate, peracetic acid and ozone, and can effectively degrade organic pollutants in sewage. The preparation method is simple in preparation process, easy to operate, low in cost and suitable for industrial production, and has great commercial prospects.

Description

technical field [0001] The invention relates to the technical field of advanced sewage treatment, in particular to a method for preparing a defective carbon material and its application in catalytic pollution removal. Background technique [0002] In recent years, a large number of toxic and harmful organic pollutants such as phenols, dyes and antibiotics have entered the water environment, bringing potential environmental risks. For the effective control and removal of these organic pollutants, advanced oxidation technology has great advantages. [0003] The advanced oxidation method based on persulfate, peracetic acid and ozone activation is a research focus in recent years and has a good application prospect. Common oxidant (including persulfate, peracetic acid, and ozone) activation methods include heat treatment, microwave irradiation, ultraviolet irradiation, and ultrasonic coupling. However, the above method needs to provide additional energy, and its equipment syst...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J37/34C02F1/72C02F101/30
CPCB01J21/18B01J37/349C02F1/725C02F2101/308
Inventor 刘永泽刘世奇封莉张子辰田幸张立秋杜子文
Owner BEIJING FORESTRY UNIVERSITY
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