Journal ArticleDOI
Electrochemical waste water treatment using high overvoltage anodes. Part I: Physical and electrochemical properties of SnO2 anodes
Rüdiger Kötz,S. Stucki,B. Carcer +2 more
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In this paper, the performance of SnO2 as an anode material with high oxygen gas-evolution overpotential was investigated in view of its application for electrochemical oxidation of bio-refractory organics in waste waters.Abstract:
The electrochemical performance of SnO2 as an anode material with high oxygen gas-evolution overpotential was investigated in view of its application for electrochemical oxidation of bio-refractory organics in waste waters. The influence of the doping agent (Sb, F, Cl) and doping level on the oxygen-evolution reaction was studied in terms of Tafel slope, oxygen-overpotential and exchange current densities for the Ce3+→Ce4+ reaction. Tafel slopes of about 300 mV decade−1 were found and the oxygen evolution overpotential was 600mV higher than that of platinum. While the doping level had no significant influence on Tafel slopes and oxygen overpotentials the stability of the SnO2 electrode increased with charge carrier density. The oxidation of phenol was investigated as a test for the oxidizing power of the new anode material when compared to Pt or PbO2. The rate of phenol removal was much higher for SnO2 than for PbO2 or Pt.read more
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Electrochemical technologies in wastewater treatment
TL;DR: In this article, the development, design and applications of electrochemical technologies in water and wastewater treatment are reviewed with particular focus on electrodeposition, electrocoagulation, electroflotation (EF), and electrooxidation.
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Direct And Mediated Anodic Oxidation of Organic Pollutants
Marco Panizza,Giacomo Cerisola +1 more
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Electrochemical oxidation of organic pollutants for the wastewater treatment: direct and indirect processes
TL;DR: The present tutorial review summarizes the results of an extensive selection of papers dealing with electrochemical oxidation, which is proposed as an alternative for treating polluted wastes, to discuss the possibility of removing selected contaminants from water using different anodes.
Journal ArticleDOI
Electrolysis of water on (oxidized) metal surfaces
TL;DR: In this paper, a method for obtaining the thermochemistry of the electrochemical water splitting process as a function of the bias directly from the electronic structure calculations was developed, and the binding energies of the different intermediates were linearly correlated for a number of metals.
Journal ArticleDOI
Electrocatalysis in the electrochemical conversion/combustion of organic pollutants for waste water treatment
TL;DR: In this article, a simplified mechanism for the electrochemical oxidation or combustion of organics is presented according to which selective oxidation occurs with oxide anodes (MOx) forming the so-called higher oxide MOx+1 and combustion occurs with electrodes at the surface of which OH radicals are accumulated.
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Physical Properties of SnO2 Materials: III . Optical Properties
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