Electrochemical oxygen catalytic reduction cathode material for water treatment and preparation method thereof

Abstract

The invention relates to an electrochemical oxygen catalytic reduction cathode material for water treatment and a preparation method thereof, and belongs to the technical field of preparation of catalytic materials. A mesh material, a porous material or a foam material containing any one metal matrix material of steel, chromium, nickel, titanium, stainless steel and copper is used as a raw material; after the raw material is processed by an oxygen (O) chemical combination treatment, a sulfur (S) chemical combination treatment, a nitrogen (N) chemical combination treatment or a phosphorus (P) chemical combination treatment; the raw material is used as an oxygen catalytic reduction cathode material of an electrochemical cathode oxygen reduction technology for water treatment, so that electron transfer in the cathode electrochemical catalytic oxygen reduction process is easier, and the capacity of generating active oxygen (HO., H2O2 and O3) in-situ on an electrode of an electrochemical reactor is greatly improved; and therefore, the efficiency of electrochemical catalytic degradation of organic wastewater is greatly improved, compared with that of a traditional electrode. The method is simple in process and convenient to operate, is much lower in cost than a traditional precious metal material, is much higher in cathode efficiency than a common graphite material, and has a great practical application value.

Description

technical field [0001] The invention belongs to the technical field of catalytic material preparation, and relates to a preparation method of an oxygen reduction cathode material, in particular to an electrochemical oxygen catalytic reduction cathode material for water treatment and a preparation method thereof. Background technique [0002] Due to the rapid development of modern industry, steel, non-ferrous metallurgy, surface treatment, printing and dyeing, pharmaceuticals, pesticides, coking, oil refining, papermaking, plastics, ceramics, textiles, organic chemicals and other production processes have produced a large amount of organic pollutant wastewater. Organic substances in wastewater such as: organic amines, organic phosphorus, phenols and their derivatives, aromatic compounds, organic heterocyclic compounds, etc., have a great poisonous effect on organisms in the water body, and are difficult to degrade, and are easy to damage the water body. It is an important res...

AI Technical Summary

Problems solved by technology

The key to the oxygen reduction efficiency of the cathode lies in the catalytic performance of the cathode material for oxygen reduction. Many noble metal materials such as Pt and Pd are good oxygen reduction catalytic materials. However, they are expensive and rarely used in the wastewater treatment market.

At present, graphite block, carbon felt, graphite felt and other cathodes are widely used, but because there are no other more effective catalytic elements except carbon materials on their surface, their electrochemical oxygen reduction efficiency has not been ideal.

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