Preparation method of Ti-based lead dioxide electrode

Abstract

A preparation method of a Ti-based lead dioxide electrode belongs to the technical field of the preparation of electrode, and the invention specifically relates to a preparation method of a Ti-based lead dioxide electrode. The Ti-based lead dioxide electrode provided by the invention keeps unchanged current efficiency in the catalytic degradation process of organic matters. The preparation method of the Ti-based lead dioxide electrode provided by the invention is characterized by comprising the following steps: polishing a titanium plate with the thickness of 1.5mm and an area of 3*2cm<2> by 320 grit sandpaper, rinsing the titanium plate with water and polishing with 600 grit sandpaper; placing the clean titanium plate in a 40-60% NaOH solution, heating appropriately, taking out the titanium plate 2-4 h later, rinsing the titanium plate with water, then soaking the titanium plate in a mixed solution of HNO3 and H2SO4 for 2-6 h; taking out the titanium plate, rinsing immediately, stewing the titanium plate in boiling in oxalic acid solution until the appearance of red brown material on the surface of the titanium plate; taking the titanium plate out of the oxalic acid solution and quickly putting the titanium plate into an electro deposition solution; selecting a stainless steel plate with the same size as the cathode, and controlling the electro deposition current density at 20-35 mA / cm<2>, so as to obtain a PbO2 electrodeposition coating.

Description

technical field [0001] The invention belongs to the technical field of electrode preparation, in particular the invention relates to a method for preparing a titanium-based lead dioxide electrode. Background technique [0002] The emergence of more and more biodegradable organic pollutants or biotoxic pollutants has brought great challenges to the traditional biological treatment technology; as an environmentally friendly pollutant treatment method, the electrochemical process, because of the equipment used Due to its small size, no secondary pollution, and complete mineralization of organic pollutants, it has attracted great attention and has a good application prospect. At present, the main difficulties in the treatment of refractory organics by electrocatalytic oxidation are low treatment efficiency and poor electrode stability, both of which are closely related to the composition, structure and preparation method of electrode materials. People have done a lot of researc...

AI Technical Summary

Problems solved by technology

DSA electrodes are also considered to have potential vitality in the degradation of organic matter due to their catalytic properties and high stability of metal oxides; however, the commonly used titanium-based RuO 2 Electrode, IrO 2 The oxygen evolution potential of the electrode is low, which will lead to a decrease in current efficiency in the catalytic degradation of organic matter; therefore, the research and preparation of DSA electrodes with high oxygen evolution potential and good electrocatalytic properties for organic matter degradation are the main prerequisites for the application of electrocatalytic oxidation.