Abstract
Preparation of a novel type of titanium-substrate lead dioxide anode with enhanced electrocatalytic activity for electrosynthesis is described. It has been demonstrated that in the presence of a suitable surfactant in the coating solution, an adherent and mainly tetragonal form of lead dioxide is deposited on a platinized titanium surface such that the solution side of the coating is porous while the substrate side is compact. By an analysis of anodic charging curves and steady-state Tafel plots with such porous electrodes in contact with sodium sulphate solution, it has been proved that the electrochemically active area of these anodes is higher by more than an order of magnitude when compared to the area of conventional titanium-substrate lead dioxide anodes. The electrocatalytic activity is also thereby enhanced to a significant degree.
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Munichandraiah, N., Sathyanarayana, S. Insoluble anode of porous lead dioxide for electrosynthesis: preparation and characterization. J Appl Electrochem 17, 22–32 (1987). https://doi.org/10.1007/BF01009128
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DOI: https://doi.org/10.1007/BF01009128