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Preparation method of Co3O4/graphite felt composite electrode applied to anodic oxidation system

A composite electrode and anodic oxidation technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problems of herbicide biological toxicity, etc., achieve enhanced oxidation efficiency, good conductivity, and improved oxidation The effect of potency

Active Publication Date: 2019-03-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most herbicides are biologically toxic and considered to have potential "three-caused" effects, and are typical persistent organic pollutants in water bodies

Method used

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  • Preparation method of Co3O4/graphite felt composite electrode applied to anodic oxidation system
  • Preparation method of Co3O4/graphite felt composite electrode applied to anodic oxidation system
  • Preparation method of Co3O4/graphite felt composite electrode applied to anodic oxidation system

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Put a 1cm×7cm graphite felt into an isopropanol solution and ultrasonically clean it to remove dirt, then rinse off the residual isopropanol with ultrapure water, and dry it with nitrogen to obtain an unloaded graphite felt;

[0022] (2) Take cobalt acetate tetrahydrate and add it to the ethanol solution, stir and dissolve it fully and use it as soaking liquid, the concentration of cobalt acetate tetrahydrate is 4mmol / L. The graphite felt cleaned in step (1) was immersed in an ethanol solution of cobalt acetate tetrahydrate and sonicated for 30 minutes, and then placed in a petri dish at room temperature to dry overnight.

[0023] (3) Place the dried graphite felt in an atmosphere furnace, and calcinate at 300°C for 60 minutes (the room temperature rises to 300°C, the heating rate is 5°C / min), and the air is pressed into the furnace at a flow rate of 1L / min during the calcining , get Co 3 o 4 Load graphite felt for spare;

[0024] (4) Co prepared in step (3) 3 o...

Embodiment 2

[0027] (1) Put a 1cm×7cm graphite felt into an isopropanol solution and ultrasonically clean it to remove dirt, then rinse off the residual isopropanol with ultrapure water, and dry it with nitrogen to obtain an unloaded graphite felt;

[0028] (2) Take cobalt acetate tetrahydrate and add it to the ethanol solution, stir and dissolve it fully and use it as soaking liquid, the concentration of cobalt acetate tetrahydrate is 4mmol / L. The graphite felt cleaned in step (1) was immersed in an ethanol solution of cobalt acetate tetrahydrate and sonicated for 30 minutes, and then placed in a petri dish at room temperature to dry overnight.

[0029] (3) Place the dried graphite felt in an atmosphere furnace, and calcinate at 300°C for 60 minutes (the room temperature rises to 300°C, the heating rate is 5°C / min), and the air is pressed into the furnace at a flow rate of 1L / min during the calcining , get Co 3 o 4 Load graphite felt for spare;

[0030] (4) Co prepared in step (3) 3 o...

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Abstract

A preparation method of a Co3O4 / graphite felt composite electrode applied to an anodic oxidation system belongs to the technical field of electrochemical water treatment. With the graphite felt beinga substrate, cobalt acetate is supported thereon, and then the graphite felt is calcined at high temperature in air atmosphere to obtain a Co3O4-supported graphite felt; then at a certain high temperature, the Co3O4-supported graphite felt is calcined so that the graphite felt is etched by the Co3O4 to finally obtain the Co3O4 / graphite felt composite electrode. Compared with non-etched Co3O4-supported graphite felt composite electrode produced under same conditions, the Co3O4 / graphite felt composite electrode has higher oxidization effect.

Description

technical field [0001] The invention belongs to the technical field of electrochemical water treatment, and relates to a Co 3 o 4 The preparation method of graphite felt composite electrode is mainly used for the electrochemical oxidation degradation of herbicide pollutants in water. Background technique [0002] Herbicides are widely used in the prevention and control of harmful plants such as weeds, shrubs, and trees in farmland, orchards, flower nurseries, grasslands, and non-cultivated areas. However, most herbicides are biologically toxic and considered to have potential "three-cause" effects, and are typical persistent organic pollutants in water bodies. Therefore, it is very necessary to remove herbicide pollutants in water. As an environmentally friendly technology, anodic oxidation has a good application prospect in environmental control, especially in the degradation of persistent organic pollutants in water. [0003] The key to the treatment of herbicide pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2001/46142C02F2101/30
Inventor 孙治荣朱凯亓海强
Owner BEIJING UNIV OF TECH
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