Device and method for electrochemically degrading gaseous pollutants

An electrochemical and pollutant technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of low degradation efficiency of gaseous pollutants, unsuitable for electrochemical degradation of water solubility, etc.

Active Publication Date: 2021-07-06
SHENZHEN PUREMATE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing electrochemical method for degrading gaseous pollutants is generally to pass the gaseous pollutants into the liquid-phase electrolyte, and oxidize and degrade the gaseous pollutants through the anode in the liquid-phase electrolyte, but this method degrades the degradation of gaseous pollutants Low efficiency and not suitable for electrochemical degradation of poorly water-soluble gaseous organic pollutants

Method used

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  • Device and method for electrochemically degrading gaseous pollutants
  • Device and method for electrochemically degrading gaseous pollutants

Examples

Experimental program
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Effect test

Embodiment 1

[0050] (1) Preparation of the first electrode: ultrasonically disperse 1 g of carbon black in 100 ml of ethanol solvent, add 0.05 g of tin dichloroacetylacetonate, continue ultrasonically dispersing for 2 hours, then stir the dispersion at room temperature for 20 hours, then The carbon black was separated by centrifugation and dried at 50°C. Then, the material was calcined at 450° C. for 1 hour in an air atmosphere to obtain a catalyst with carbon black as a carrier and loaded with tin oxide nanoparticles, that is, a supported tin oxide catalyst. Ultrasonic dispersion of 10 mg of the above-prepared supported tin oxide catalyst into 5 mL of a mixed solution of perfluorosulfonic acid-polytetrafluoroethylene copolymer and isopropanol, and then spraying the dispersion on the surface of a 16 cm2 carbon cloth electrode, can Prepare the first electrode.

[0051] (2) Preparation of the second electrode: The second electrode was prepared according to the above-mentioned method for pre...

Embodiment 2

[0056] (1) Preparation of the first electrode: ultrasonically disperse 1 g of carbon nanotubes in an isopropanol solution containing 10 mmol / L bis(acetylacetonate) diisopropyl titanate, take it out after 2 hours, and put the dispersion in Drying under vacuum at 50°C, and then putting it into a tube furnace and treating it at a high temperature of 400°C under the condition of Ar gas, a catalyst with carbon black as a carrier and loaded with titanium oxide nanoparticles can be obtained, which is a supported titanium oxide catalyst. Ultrasonic dispersion of 10 mg of the above-prepared supported titanium oxide catalyst into 5 mL of a mixed solution of perfluorosulfonic acid-polytetrafluoroethylene copolymer and isopropanol, and then spraying the dispersion on the surface of a 16 square centimeter carbon cloth electrode, can Prepare the first electrode.

[0057] (2) Preparation of the second electrode: The second electrode was prepared according to the above-mentioned method for pr...

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Abstract

The invention discloses an electrochemical method for degrading gaseous pollutants and a method thereof. Wherein, the device for electrochemically degrading gaseous pollutants includes an electrochemical reactor, and the electrochemical reactor includes a power supply, a first electrode, a second electrode, a proton exchange membrane, a first airflow channel, and a second airflow channel, The proton exchange membrane is arranged between the first electrode and the second electrode, the first electrode is arranged in the first air flow channel, and the second electrode is arranged in the second air flow channel , the first electrode and the second electrode are both porous conductive adsorption material electrodes loaded with metal oxide catalysts. The technical solution of the invention can improve the degradation rate of gaseous pollutants, effectively degrade gaseous organic pollutants with poor water solubility, and quickly kill pathogenic bacteria and viruses in the air.

Description

technical field [0001] The invention relates to the technical field of purifying gaseous pollutants, in particular to a device and method for electrochemically degrading gaseous pollutants. Background technique [0002] Volatile organic compounds are volatile organic compounds with a saturated vapor pressure exceeding 133 Pa at room temperature and a boiling point between 50 and 260 degrees. They are highly toxic gaseous pollutants indoors and are more harmful to the human body. At present, the degradation methods for these gaseous pollutants mainly include adsorption fixation technology and reaction degradation technology. Among them, reaction degradation technology is widely used because it can achieve the degradation of volatile organic compounds and the catalyst materials used can be used for a long time. Moreover, the electrochemical method in the reactive degradation technology has attracted much attention because of its compact structure, low maintenance cost, and sui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/32A61L9/16
CPCA61L9/16A61L2209/22B01D53/326B01D2255/20707B01D2255/2073B01D2255/20769B01D2255/20784B01D2255/2094B01D2255/702B01D2257/708
Inventor 张礼知贾法龙严义清严方升栗相军
Owner SHENZHEN PUREMATE TECH
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