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Preparation method and application of cobalt disulfide/carbon fiber composite material

A composite material, cobalt disulfide technology, applied in chemical instruments and methods, chemical/physical processes, oxidized water/sewage treatment, etc., can solve the problems of high temperature required, complicated preparation process of cobalt disulfide, etc., and achieve the reaction conditions Mild and controllable, short cycle, simple and safe preparation process

Active Publication Date: 2020-05-29
清创人和生态工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the preparation process of cobalt disulfide is complicated and the required temperature is high, the present invention provides a preparation method and application of cobalt disulfide / carbon fiber composite material

Method used

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  • Preparation method and application of cobalt disulfide/carbon fiber composite material
  • Preparation method and application of cobalt disulfide/carbon fiber composite material
  • Preparation method and application of cobalt disulfide/carbon fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Cut a polyacrylonitrile carbon felt with a length of 4cm, a width of 3cm, and a thickness of 0.5cm, wash and dry in acetone, ethanol, and deionized water in sequence; prepare a 0.6mol / L urea solution under magnetic stirring conditions, and transfer it to the reaction In the kettle, the hydrothermal temperature is 120° C., and the reaction time is 20 h, and nitriding treatment is carried out to obtain nitrided carbon fibers.

[0035] Weigh cobalt chloride, sodium thiosulfate and sublimed sulfur, control the total mole of cobalt ion salt, sodium thiosulfate and sublimated sulfur to be 0.03mol, and the molar ratio of cobalt ion salt, sulfur salt and sublimated sulfur to be 1:1:1 , was dissolved in 50mL ultrapure water, and stirred for 40min to obtain a mixed solution.

[0036] Immerse the carbon nitride fiber material in the above solution, and transfer it to the reaction kettle after immersion for 20 minutes. Drying for 24 hours under high temperature to obtain a cobalt ...

Embodiment 2

[0038] Cut an activated carbon felt with a length of 6 cm, a width of 5 cm, and a thickness of 1 cm, wash and dry in acetone, ethanol, and deionized water in sequence; configure a 1.8 mol / L urea solution under magnetic stirring conditions, and transfer it to a reaction kettle, water The heating temperature is 160° C., the reaction time is 12 hours, and nitriding treatment is performed to obtain nitrided carbon fibers.

[0039] Take cobalt sulfate, sodium thiosulfate and sublimation sulfur, control the total mole of cobalt ion salt, sodium thiosulfate and sublimation sulfur to be 0.03mol, and the mol ratio of cobalt ion salt, sulfur salt and sublimation sulfur is 1:1:2, It was dissolved in 70mL ultrapure water and stirred for 30min to obtain a mixed solution.

[0040] Immerse the carbon nitride fiber material in the above solution, and transfer it to the reaction kettle after immersion for 30 minutes. Drying for 24 hours under high temperature to obtain a cobalt disulfide / carb...

Embodiment 3

[0042] Cut a viscose-based graphite felt with a length of 4 cm, a width of 3 cm, and a thickness of 0.5 cm, wash and dry in acetone, ethanol, and deionized water in sequence; configure a 2.5 mol / L urea solution under magnetic stirring conditions, and transfer it to the reaction In the kettle, the hydrothermal temperature is 200° C., and the reaction time is 8 hours, and nitriding treatment is carried out to obtain nitrided carbon fibers.

[0043] Take cobalt chloride, sodium thiosulfate and sublimation sulfur, control the total mole of cobalt ion salt, sodium thiosulfate and sublimation sulfur to be 0.03mol, and the molar ratio of cobalt ion salt, sulfur salt and sublimation sulfur is 1:1:2 , was dissolved in 80mL ultrapure water, and stirred for 30min to obtain a mixed solution.

[0044]Immerse the carbon nitride fiber material in the above solution, and transfer it to the reaction kettle after immersion for 40 minutes. Drying for 24 hours under high temperature to obtain a ...

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Abstract

The invention belongs to the technical field of electrocatalysis and water treatment, and particularly relates to a preparation method and application of a cobalt disulfide / carbon fiber composite material. The preparation method comprises the steps: nitriding carbon fibers to obtain carbon nitride fibers; mixing cobalt ion salt, sodium thiosulfate, sublimed sulfur and ultrapure water to obtain a mixed solution; and mixing the carbon nitride fibers with a mixed solution, and carrying out hydrothermal reaction to obtain the cobalt disulfide / carbon fiber composite material. The cobalt disulfide / carbon fiber composite material is prepared by a one-step hydrothermal method, the preparation process is simple and safe, the reaction conditions are mild and controllable, and the cost is low. The invention also discloses the application of the composite material in in-situ production of hydrogen peroxide and synchronous degradation of organic pollutants in an electrocatalytic cathode.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis and water treatment, and in particular relates to a preparation method and application of a cobalt disulfide / carbon fiber composite material. Background technique [0002] Since the reform and opening up, the rapid development of industry and agriculture and the improvement of people's living standards have caused the types and quantities of organic pollutants in environmental water to show an increasing trend year by year. Therefore, proposing or developing an efficient and economical water treatment process is a guarantee Prerequisites and basic conditions for a healthy and healthy ecological environment for human beings. Among them, Advanced Oxidation Processes (AOPs) has attracted much attention as an efficient and easy-to-operate water treatment technology, especially in the field of some organic pollutants that are difficult to treat by traditional methods. The concept of "advanced...

Claims

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Application Information

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IPC IPC(8): B01J27/043C02F1/461C02F1/72C25B1/30C25B11/06C02F101/34
CPCB01J27/043C02F1/4672C02F1/725C02F1/722C25B1/30C02F2101/345C25B11/091Y02E60/50
Inventor 原沁波刘世斌董志帅
Owner 清创人和生态工程技术有限公司
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