Electrode for removal of disinfection byproducts in water and preparation method thereof

A technology for disinfection by-products and water removal, applied in electrodes, chemical instruments and methods, electrolytic components, etc., can solve the problems of difficult transportation, flammability and explosion, and low solubility of hydrogen, and achieve low operating costs, simple preparation methods, The effect of high electrocatalytic activity

Inactive Publication Date: 2013-12-04
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of hydrogen in water is low, and it is flammable and explosive, and it is difficult to transport, and there are many inconveniences in application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, the carbon paper was soaked in a solution of polyethylene glycol octyl phenyl ether (Triton X-100) with a mass concentration of 0.1% for 24 hours, pretreated and cleaned before use.

[0021] Dissolve palladium chloride in 0.1mol / L hydrochloric acid solution to obtain a mixed solution, then slowly add the mixed solution dropwise to the ammonium chloride solution while stirring rapidly, and set the volume to 1L so that the palladium content is 0.001mol / L, Ammonium chloride is 0.01mol / L, leaves standstill 24 hours, and the dichlorodiaminopalladium complex obtained is the electroplating solution for depositing palladium; in this electroplating solution, the carbon paper after the above-mentioned pretreatment is the negative electrode, with The platinum sheet is used as the anode, and the constant current electrodeposition of palladium is carried out in this electroplating solution. During the electroplating process, the current density is 2mA / cm 2 , the electrodeposi...

Embodiment 2

[0024] The pretreatment of carbon paper is the same as embodiment 1. Dissolve palladium chloride in 0.1mol / L hydrochloric acid solution to obtain a mixed solution, then slowly add the mixed solution dropwise to the ammonium chloride solution, while stirring rapidly, and set the volume to 1L, so that the palladium content is 0.005mol / L, Ammonium chloride is 0.05mol / L, left standstill for 24 hours, the dichlorodiaminopalladium complex obtained is the electroplating solution for depositing palladium; in this electroplating solution, the carbon paper after pretreatment is used as the cathode, and the platinum The sheet is used as an anode, and a constant current electrodeposition of palladium is carried out in this electroplating solution. During the electroplating process, the current density is 1mA / cm 2 , the electrodeposition time is 20 minutes, and after the electrodeposition is completed, it is washed with deionized water to obtain a carbon paper electrodeposited palladium el...

Embodiment 3

[0027]The pretreatment of carbon paper is the same as embodiment 1. Dissolve palladium chloride in 0.1mol / L hydrochloric acid solution to obtain a mixed solution, then slowly add the mixed solution dropwise to the ammonium chloride solution, while stirring rapidly, and set the volume to 1L, so that the palladium content is 0.01mol / L, Ammonium chloride is 1mol / L, and after standing for 25 hours, the obtained dichlorodiaminopalladium complex is the electroplating solution for depositing palladium; in this electroplating solution, the carbon paper after pretreatment is used as the cathode, and the platinum sheet As an anode, constant voltage electrodeposition of palladium is carried out in this electroplating solution. During the electroplating process, the potential of electrodeposition is -0.5V, and the time of electrodeposition is 20 minutes. After the electrodeposition is completed, it is cleaned with deionized water to obtain carbon Paper electrodeposited palladium electrode...

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PUM

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Abstract

The invention belongs to the technical field of water treatment, relates to an electrode for removal of disinfection byproducts in water and a preparation method thereof, and particularly relates to the electrode obtained by successively and respectively electrodepositing a noble metal and iron on the surface of carbon paper. The preparation method of the electrode for removal of the disinfection byproducts in water comprises the steps: with the carbon paper as a carrier, through an electrodeposition method, the in-situ generated noble metal and iron are successively and respectively electrodeposited on the surface of the carbon paper, and the electrode for removal of the disinfection byproducts in water can be obtained. In a case of energizing, the electrode can reduce and remove the disinfection by-products such as haloacetic acids, bromates and the like having stronger polarity and more stable in water. The preparation method of the electrode is simple, and is easy to operate; and the electrode prepared by electrodepositing in-situ generated noble metal nanoparticles and iron nanoparticles on the surface of the carbon paper has low cost, and has the excellent ability of reducing removal of the disinfection byproducts in water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to an electrode for removing disinfection by-products in water and a preparation method thereof, in particular to an electrode obtained by successively electrodepositing precious metals and iron on the surface of carbon paper. It can reduce and remove disinfection by-products in water. Background technique [0002] With the development of the economy and the increase of the population, the shortage of water resources and the pollution of water sources have become two major problems facing the global water resources. At present, organic and inorganic pollutants are deteriorating the environmental quality day by day, and governments and scientific researchers of various countries are concerned about it. Among the many pollutants, a class of compounds with special properties has attracted the special attention of researchers—disinfection byproducts. Disinfection by-products ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C25B11/12C25B11/08
Inventor 曲久辉李昂臻赵旭刘会娟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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