Enhanced Electrochemical Properties of a Lead Dioxide with an Intermediate Layer of Platinum Nanofiber on a Titanium Substrate for Decomposition of Organic Chelating Agents
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Lead dioxide (PbO2) is generally known as a cheap and effective metal oxide electrode for electrochemical catalysis such as batteries and oxidation of organic compounds. However, PbO2 electrodes have problems such as the release of lead ions into surround and collapse of the structure during the electrochemical catalytic process. These result in shortening the electrode life and the replacement time, leading to cost increase. Various studies have been reported to prevent these problems and to improve the stability and electrochemical catalytic properties using an intermediate layer and forming nanostructures on electrode surface. We investigated platinum nanofiber (Pt-NF) as an intermediate layer. The decomposition of chelating agents such as NTA and EDTA was investigated using the prepared PbO2-based electrode. The electrochemical efficiency of nanofibrous PbO2 electrode was compared with planar PbO2 electrode without nanofibrous structure.