Preparation method of high catalytic activity magnetic particle loading 2.5-dimensional anode

Abstract

The invention discloses a preparation method of a high catalytic activity magnetic particle loading 2.5-dimensional anode. The preparation method comprises the following steps of preparing a titaniumoxide layer on ferroferric oxide magnetic particles by utilizing a dipping-heat oxidation method firstly, and then further coating the particles, covered with titanium oxide, with a antimony-doped tindioxide layer through the dipping-heat oxidation method to enable the antimony-doped tin dioxide layer to be tightly combined with the titanium oxide layer which is adhered to a magnetic particle substrate to form a solid solution; and attracting the magnetic particles by adopting the magnetic force to enable the magnetic particles to be adhered to the surface of a cylindrical electrode to form the 2.5-dimensional magnetic particle loading anode. According to the preparation method, due to the flexibility of the magnetic force, the magnetic particles on a novel electrode can be recovered in situ, so that operation is simple; and the experiment condition requirements are relatively low, the technological process is liable to control, and the prepared composite anode has high electro-catalytic activity, is high in oxygen evolution potential and long in service life and is suitable for being applied to industrially electrolyzing waste water in a large scale.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrochemical catalytic electrodes, and in particular relates to a preparation method of a 2.5-dimensional anode loaded with magnetic particles with high catalytic activity. Background technique [0002] Water is a precious natural resource for human survival and social development, and it is also a limiting factor for sustainable social development. The total amount of water resources in my country is abundant, but relatively small, and the uneven distribution of water resources is extremely serious. Many areas in our country, especially cities and industrially developed areas, are in short supply of water resources. In recent years, with the rapid development of my country's industry, the amount of wastewater discharge has also increased year by year, and water pollution has become more and more diversified. The pollution sources of organic wastewater are increasing day by day, and the...

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Problems solved by technology

[0007] At present, the traditional antimony-doped tin dioxide electrode has good electrocatalytic activity, but it has more surface cracks due to heat treatment, and the electrolyte is easy to infiltrate during use, which will passivate the titanium matrix and cause the electrode to be deactivated and unable to continue to use. , less stable

Although the traditional lead dioxide electrode has a long life, its catalytic activity is low, and the binding force between the lead dioxide coating and the titanium substrate is poor, causing the coating to fall off easily and reducing the stability of the electrode.

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