Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of nitrogen-doped electro-Fenton cathode

A nitrogen-doped, Fenton-based technology, applied in chemical instruments and methods, water treatment of special compounds, water/sewage treatment, etc., can solve the problem of low catalytic performance of PTFE modified electrodes

Inactive Publication Date: 2021-07-06
HARBIN INST OF TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem of low catalytic performance of the existing PTFE modified electrode, and provides a preparation method and application of a nitrogen-doped electric Fenton cathode, so as to improve the catalytic activity of the electrode and increase the output of hydrogen peroxide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of nitrogen-doped electro-Fenton cathode
  • Preparation method and application of nitrogen-doped electro-Fenton cathode
  • Preparation method and application of nitrogen-doped electro-Fenton cathode

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific embodiment one: the preparation method of the nitrogen-doped electric Fenton cathode of the present embodiment is carried out according to the following steps:

[0017] 1. Using nitrogen-containing substances as precursors and carbonizing them at high temperatures to obtain nitrogen-containing catalysts; wherein the nitrogen-containing substances are 2,6-diaminopurines containing both pyridine nitrogen and pyrrole nitrogen, and 2,6-diaminopurine containing only pyridine nitrogen. Tripyridyl triazine or 3,5-diamino-1,2,4-triazole containing only pyrrole nitrogen; the high-temperature carbonization is: the precursor is placed in a tube furnace, and the temperature is raised in a nitrogen atmosphere to 300-310°C, heat treatment for 30-40 minutes, then continue to heat up to 600-650°C, heat treatment for 1-2 hours;

[0018] 2. Mix the nitrogen-containing catalyst with absolute ethanol, graphite powder, and PTFE emulsion, and perform ultrasonic treatment and constan...

specific Embodiment approach 2

[0020] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the temperature rise rate in the high-temperature carbonization process of step 1 is controlled at 5-10°C min -1 ; Others are the same as in Embodiment 1.

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the ratio of the quality of the nitrogen-containing catalyst described in step two to the volume of absolute ethanol is 1g: (30-50) mL; other and specific Embodiment 1 or 2 are the same.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of a nitrogen-doped electro-Fenton cathode, and relates to a preparation method and application of an electrode material. The technical problem that an existing PTFE modified electrode is low in catalytic performance is solved. The method comprises the following steps: 1, taking a nitrogen-containing substance as a precursor, and carbonizing at high temperature to obtain a nitrogen-containing catalyst, wherein the nitrogen-containing substance is 2, 6-diaminopurine, tripyridyl triazine or 3, 5-diamino-1, 2, 4-triazole; 2, mixing a nitrogen-containing catalyst with absolute ethyl alcohol, graphite powder and PTFE emulsion to form paste; and 3, pressing the paste into sheets, rolling the sheets onto a stainless steel mesh, and calcining to obtain the nitrogen-doped electro-Fenton cathode. In the electro-Fenton system, the hydrogen peroxide yield of the electrode reaches 8-10 mg L <-1 > h <-1 > cm <-2 >, and the electrode can be repeatedly used and can be applied to the electro-Fenton system for in-situ production of hydrogen peroxide as a cathode.

Description

technical field [0001] The invention relates to a preparation method and application of an electrode material. Background technique [0002] With the development of industry, more and more refractory biodegradable pollutants appear, which need to be treated by advanced oxidation method. As one of the advanced oxidation treatment methods, the electric Fenton technology can produce hydrogen peroxide in situ. Compared with the traditional Fenton, it reduces the cost of adding hydrogen peroxide, which is environmentally friendly and reduces costs. Electro-Fenton technology usually uses carbon materials as cathodes for hydrogen peroxide production, such as carbon felt, graphite felt, carbon sponge, activated carbon fibers, PTFE modified electrodes, and transition metal modified carbon materials. Among them, the PTFE modified electrode has the highest hydrogen peroxide production capacity. The article "A highly energy-efficient flow-through electro-Fenton process for organic pol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72
CPCC02F1/4672C02F1/46109C02F2001/46133C02F2305/026
Inventor 邱珊朱英实马放邓凤霞张珈瑜荆宝剑郑砚石
Owner HARBIN INST OF TECH