Production method of composite metal oxide functional electrode

A composite metal and oxide technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of precious metal loss, complicated preparation steps, limited loading of cobalt tetroxide, etc., and achieve low concentration of intermediate by-products , The engineering application prospect is broad, and the effect of reduction and removal can be realized efficiently
CN110818031AActive Publication Date: 2020-02-21YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANSHAN UNIV
Publication Date
2020-02-21

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Abstract

The invention provides a production method of a composite metal oxide functional electrode. The production method comprises the following steps: dissolving cobalt nitrate hexahydrate, copper nitrate trihydrate and urea in methanol to obtain a precursor solution, impregnating a carbon cloth in the precursor solution, and carrying out a hydrothermal reaction on the mixture of the carbon cloth and the precursor solution at 160-200 DEG C for 2-4 h to obtain an electrode precursor; and calcining the electrode precursor at 250-350 DEG C for 2-4 h to obtain a Co3O4 / CuO electrode loaded on the carboncloth, impregnating and reducing the carbon cloth loaded with the Co3O4 / CuO electrode in a sodium borohydride solution for 5-15 min to obtain a carbon cloth loaded with a CoO / Cu2O functional electrode, and performing vacuum drying. The CoO / Cu2O functional electrode obtained by the production method has the advantages of excellent reduction catalysis performance, efficient realization of reductionremoval of nitrates, low concentration of intermediate byproducts, and wide engineering application prospect.
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Description

technical field

[0001] The invention relates to a preparation method of a composite metal oxide functional electrode. Background technique

[0002] In recent years, with the advancement of science and technology and economic development, people's living standards have been continuously improved, and the process of industrialization has been accelerated. Human activities have damaged the environmental ecosystem to a certain extent, and the impact of nitrate pollution on surface water and groundwater has become increasingly serious. At present, there are three main methods for the removal of nitrate in water: biological method, physical chemical method, and chemical method. Electrochemical reduction of nitrate is the combination of electrochemical technology and catalytic technology, using electrons as reducing agents, and an electrochemical redox reaction occurs under certain conditions, thereby reducing nitrate nitrogen to nitrogen gas. In recent years, electrochemical redu...

Claims

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