Preparation method of high-mechanical strength Ti-based double-interlayer anode

Abstract

The invention relates to a preparation method of a high-mechanical strength Ti-based double-interlayer anode; the preparation method is characterized in that a pure Ti plate or a Ti alloy plate is taken as an electrode substrate, a mixed alcohol solution of Sn salt is taken as an impregnation solution, and the electrode substrate and the impregnation solution are doped with Sb elements at the same time, so that a Ti-Sb2O3-SnO2 compound catalytic anode is obtained; after the Ti-Sb2O3-SnO2 compound catalytic anode is prepared, a yellow conductive layer TiO is slowly formed in a water solution, and the Ti-TiO / Sb2O3-SnO2 anode having double interlayers of TiO / Sb2O3 is finally formed; the method takes the mixed alcohol solution as a solvent so as to enable a surface layer of an electrode to be evenly and firmly coated; TiO is good in electrical conductivity; the binding force between the TiO and SnO2 is higher than that between pure Ti and the SnO2, so that the mechanical strength of the coated electrode is further improved. The method adopts the pure Ti plate or the Ti alloy plate as the substrate, thus having the advantages of being low in price, acid-resistant, corrosion-resistant and stable in mechanical properties; furthermore, a large specific surface area is obtained by oxalic acid etching, so that a material guarantee is provided for preparing the electrode with high mechanical strength.

Description

technical field [0001] The invention relates to a titanium-based shape-stable (DSA) anode, in particular to an antimony trioxide (Sb 2 o 3 ) preparation method of doped tin dioxide anode. Mixed alcohol was used as solvent during preparation, and antimony-doped tin dioxide oxide was supported on Ti base by thermal decomposition method to prepare electrode prototype, and TiO interlayer was gradually formed when electrode was used as anode. In the electrode matrix Ti and the surface species SnO 2 between TiO / Sb 2 o 3 Double sandwich structure. The use of mixed alcohol solvent greatly enhanced the mechanical strength of the titanium electrode coating, and the use of antimony trioxide doping greatly improved the conductivity of the titanium electrode. This type of electrode can be used to degrade organic substances such as phenol and nitrobenzene and inorganic substances such as ammonia nitrogen in wastewater, and belongs to the technical field of electrochemical water treatm...

AI Technical Summary

Problems solved by technology

The above method has the disadvantages that the surface of the electrode is powdery, easy to fall off, easy to foam, uneven, and easy to produce cracks after heating.

Images