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Carbon cathode material and preparation method and application thereof

A carbon cathode and carbon felt technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem of increasing the cost of carbon electrode materials, increasing the cost of water treatment, secondary environmental pollution, etc. problems, to achieve significant mineralization performance, to achieve effective utilization, and to reduce the effect of recombination rate

Inactive Publication Date: 2020-02-11
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reported cathode materials are more sensitive to pH, and must have a better degradation effect under acidic conditions. At the same time, additional iron ions need to be added during the reaction process. If they are put into engineering applications, a large amount of iron sludge will be produced, causing environmental damage. Secondary pollution, while increasing the cost of water treatment
In addition, the process of modifying other catalysts to improve the performance of carbon cathodes is complicated, which will increase the cost of carbon electrode materials

Method used

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  • Carbon cathode material and preparation method and application thereof
  • Carbon cathode material and preparation method and application thereof
  • Carbon cathode material and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0048] As a method for preparing a carbon cathode material according to an embodiment of the present invention, the method includes the following steps:

[0049] (1) Ultrasonic cleaning of carbon felt with ethyl acetate for 30 minutes, then ultrasonic cleaning of carbon felt with ethanol for 30 minutes, then ultrasonic cleaning of carbon felt with deionized water for 30 minutes, and drying of the carbon felt after cleaning;

[0050] (2) The carbon felt treated in step (1) was heated to 800° C. under a nitrogen atmosphere at a heating rate of 5° C. / min, and then heat-treated for 5 hours to obtain the carbon cathode material.

[0051] The Raman spectrum of the carbon cathode material prepared in this embodiment is as follows figure 2 shown. Depend on figure 2 It can be seen that compared with the original carbon felt, the carbon cathode material of this embodiment has a strong degree of graphitization and lattice defects.

[0052] The XPS spectrogram of the carbon cathode m...

Embodiment 2

[0055] As a method for preparing a carbon cathode material according to an embodiment of the present invention, the method includes the following steps:

[0056] (1) Ultrasonic cleaning of carbon felt with ethyl acetate for 30 minutes, then ultrasonic cleaning of carbon felt with ethanol for 30 minutes, then ultrasonic cleaning of carbon felt with deionized water for 30 minutes, and drying of the carbon felt after cleaning;

[0057] (2) heating the carbon felt treated in step (1) to 1000° C. under a nitrogen atmosphere at a heating rate of 5° C. / min and then heat-treating it for 5 hours to obtain the carbon cathode material.

Embodiment 3

[0059] As a method for preparing a carbon cathode material according to an embodiment of the present invention, the method includes the following steps:

[0060] (1) Ultrasonic cleaning of carbon felt with ethyl acetate for 30 minutes, then ultrasonic cleaning of carbon felt with ethanol for 30 minutes, then ultrasonic cleaning of carbon felt with deionized water for 30 minutes, and drying of the carbon felt after cleaning;

[0061] (2) heating the carbon felt treated in step (1) to 1000° C. under a nitrogen atmosphere at a heating rate of 10° C. / min and then heat-treating it for 2 hours to obtain the carbon cathode material.

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Abstract

The invention provides a carbon cathode material and a preparation method and application thereof. The preparation method of the carbon cathode material comprises the following steps of (1) sequentially cleaning a carbon felt with a weak-polarity organic solvent, a strong-polarity organic solvent and deionized water, and drying the cleaned carbon felt; (2) heating the carbon felt treated in the step (1) to 600-1200 DEG C at a heating rate of 2-10 DEG C / min in a nitrogen atmosphere, and performing heat treatment for 2-7 hours to obtain the carbon cathode material. The preparation method is simple, low in cost and efficient, the prepared carbon cathode material has good catalytic activity and good stability, and can be suitable for degrading organic pollutants in neutral water, and the effect of degrading the organic pollutants through (photo) electrocatalysis is excellent.

Description

technical field [0001] The invention relates to the field of photocathode materials, in particular to a carbon cathode material and its preparation method and application. Background technique [0002] The (photo)electrocatalytic degradation of organic matter system is based on a double-electrode system, and oxidizes water at the (photo) anode to obtain hydroxyl radicals through electric drive or photoelectric drive, while reducing oxygen at the cathode to obtain superoxide anion free radicals. The strong oxidative properties of hydroxyl radicals and superoxide anion free radicals undergo redox reactions with organic matter, and gradually mineralize and degrade organic matter, thereby removing pollutants in water. In (photo)electrocatalytic degradation of organic matter systems, the cathodic redox rate is usually the main factor limiting the performance of the system. Therefore, it is necessary to provide a cheap cathode material with good oxygen reduction rate performance....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/30C02F101/30
CPCC02F1/46109C02F1/30C02F2001/46142C02F2101/30
Inventor 曾庆意常晟胡春王铭麒
Owner GUANGZHOU UNIVERSITY