Lanthanum-gadolinium co-doping titanium-based lead dioxide electrode and preparation method and application thereof

Abstract

The invention provides a preparation method of a lanthanum-gadolinium co-doping titanium-based lead dioxide electrode. Rough processing is carried out on the surface of a titanium-based body, a tin antimony oxide bottom layer is prepared in a plating mode through a thermal decomposition method, then an alpha-PbO2 layer is electroplated in an alkalinity mode, finally a beta-PbO2 layer containing rare-earth metal oxide is electroplated in an acidity mode, and the lanthanum-gadolinium co-doping titanium-based lead dioxide electrode is prepared. Through the co-doping of the lanthanum and the gadolinium, a certain synergistic effect is achieved, the provided electrode can process and degrade organic matters under the normal temperature and the normal pressure, processing effect is good, cost is low, and good application value is achieved.

Description

(1) Technical field [0001] The invention relates to a novel titanium-based lead dioxide electrode co-doped with lanthanum and gadolinium, a preparation method and application thereof. (2) Background technology [0002] With the development of the economy, the number and types of refractory organic compounds in industrial wastewater are increasing day by day. These toxic and harmful high-concentration refractory organic wastewater has always restricted the sustainable development of my country's chemical, pharmaceutical, printing and dyeing, papermaking and other industries. It also affects the normal life and physical and mental health of the people. A large amount of industrial wastewater discharged by these industries has the characteristics of complex components, various types, difficult biochemical degradation, high chemical oxygen demand, toxic and harmful, and some are even teratogenic, carcinogenic, and mutagenic "three-cause" pollutants. Without effective control and ...

AI Technical Summary

Problems solved by technology

In the 1940s, due to technical constraints such as electricity and materials, traditional industrial wastewater was often treated with physical and chemical methods, biochemical methods, etc., and it was difficult to truly achieve the purpose of degrading such pollutants.

Although new lead dioxide electrodes based on Ti such as RuO 2 、Ir 2 o 5 , SnO 2 etc., to a certain extent, the energy efficiency and treatment effect have been improved, but when dealing with high-concentration organic wastewater, the electrode is prone to "poisoning" and the treatment effect is not good.

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