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Electro-Fenton cathode material and preparation method and application thereof

A cathode material, the technology of electro-Fenton, applied in the field of electrocatalysis, can solve the problems of low stability of electro-Fenton cathode materials, complex preparation methods, high preparation costs, etc., to achieve accelerated electrocatalytic reaction performance, simple preparation method, and low cost Effect

Pending Publication Date: 2022-05-13
中国科学院赣江创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of the electro-Fenton cathode material of carbon felt loaded with iron nanoparticles obtained by this preparation method is complicated and consumes a lot of energy.
[0007] The preparation methods of the currently disclosed electro-Fenton cathode materials all have certain defects, such as complex preparation methods, high preparation costs, low stability of the obtained electro-Fenton cathode materials, and the electrocatalytic production of H 2 o 2 The problem of poor selectivity and low efficiency

Method used

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  • Electro-Fenton cathode material and preparation method and application thereof
  • Electro-Fenton cathode material and preparation method and application thereof
  • Electro-Fenton cathode material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0076] The present embodiment provides a kind of preparation method of electric Fenton cathode material, and described preparation method comprises:

[0077] A carbon felt of 2cm×3cm×0.5cm was soaked in deionized water and ethanol ultrasonically for 40min, dried at 90°C for 25min, and heated under reflux at 60°C for 4h using concentrated nitric acid with a mass fraction of 55wt%. Ultrasonic soak until the cleaning solution is neutral, dry at 105°C for 25min; soak in 6wt% polytetrafluoroethylene dispersion for 35min, dry at 105°C for 35min; in a nitrogen atmosphere at 8°C / The heating rate of min was raised to 350° C. and kept for 105 min to obtain the electric Fenton cathode material.

Embodiment 2

[0079]The present embodiment provides a kind of preparation method of electric Fenton cathode material, and described preparation method comprises:

[0080] A carbon felt of 2cm×3cm×0.5cm was soaked in deionized water and ethanol ultrasonically for 30min, dried at 105°C for 35min, and heated to reflux at 75°C for 2h with concentrated nitric acid with a mass fraction of 70wt%. Ultrasonic soak until the cleaning solution is neutral, dry at 90°C for 45min; soak in 15wt% polytrifluorochloroethylene dispersion for 65min, dry at 120°C for 10min; The heating rate of ℃ / min was raised to 420 ℃ and kept for 75 minutes to obtain the electric Fenton cathode material.

Embodiment 3

[0082] The present embodiment provides a kind of preparation method of electric Fenton cathode material, and described preparation method comprises:

[0083] A carbon felt of 2cm×3cm×0.5cm was soaked in deionized water and ethanol ultrasonically for 50min, dried at 75°C for 45min, and heated at reflux for 3h at 75°C using concentrated nitric acid with a mass fraction of 40wt%. Ultrasonic soak until the cleaning solution is neutral, dry at 75°C for 35min; soak in a polyvinylidene fluoride dispersion with a mass fraction of 1wt% for 90min, and dry at 75°C for 45min; in an argon atmosphere at 6°C Raise the temperature to 280°C at a heating rate of 1 / min and hold it for 90 minutes to obtain the electric Fenton cathode material.

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Abstract

The invention provides an electro-Fenton cathode material and a preparation method and application thereof, and the preparation method comprises the following steps: activating a carbon material, soaking the activated carbon material in a dispersion liquid of a fluorine-containing hydrophobic material, and sintering in a protective atmosphere to obtain the electro-Fenton cathode material. Carbon atoms in F-C-F in the fluorine-containing hydrophobic material on the surface of the electro-Fenton cathode material have positive electricity and are easily combined with dissolved oxygen; the fluorine-containing hydrophobic material has hydrophobicity and can form a three-phase interface in an electrolyte, so that the transmission rate of oxygen on the surface of an electrode is increased, and the electro-catalytic reaction performance is accelerated; the electro-Fenton cathode material has relatively high activity for preparing hydrogen peroxide, and can be repeatedly recycled for multiple times; the preparation method of the electro-Fenton cathode material is simple, mild in condition, low in cost and wide in application range.

Description

technical field [0001] The invention belongs to the field of electrocatalysis and relates to a preparation method of an electric Fenton cathode material, in particular to an electric Fenton cathode material and its preparation method and application. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) was once one of the most important chemicals in the world with its huge demand in numerous industries. h 2 o 2 As an important chemical raw material, it has important applications in various chemical industries and environmental remediation industries, and is a green oxidant, so how to produce H efficiently and cheaply 2 o 2 It is imminent, and the large-scale chemical synthesis of H 2 o 2 The current technology is mainly an anthraquinone oxidation / reduction method, but this method consumes a lot of energy, complex equipment, and produces a large amount of chemical waste. At the same time, the high concentration of H 2 o 2 The instability of the transportation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/044C25B11/032C25B1/30C02F1/72C02F1/467C02F1/461
CPCC25B11/044C25B11/032C25B1/30C02F1/46109C02F1/4672C02F1/722C02F2001/46133C02F2201/46105
Inventor 石绍渊张宝之袁文静韩笑陈永静
Owner 中国科学院赣江创新研究院
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