The electrochemical properties of IrO2 and RuO2 nanoparticles, deposited on synthetic boron-doped diamond (BDD) surfaces, are discussed. After a description of the preparation procedure and the morphological characterization of BDD/IrO2 and BDD/RuO2 samples, the dispersion efficiency of these oxides on BDD was estimated for different loading, using cyclic voltammetry. The electrochemical behavior of 1,4 benzoquinone/hydroquinone redox couple, oxygen evolution and organics oxidation reactions have been investigated at BDD/IrO2 samples; in turn, the chlorine evolution reaction has been studied at BDD/RuO2 electrodes. “Non-catalytic” and “catalytic” models are proposed to explain the modification of the electrochemical behavior of BDD by low and high oxide loading, respectively.
Conductive metal-oxide nanoparticles on synthetic boron-doped diamond surfaces
FERRO, Sergio;DE BATTISTI, Achille;
2002
Abstract
The electrochemical properties of IrO2 and RuO2 nanoparticles, deposited on synthetic boron-doped diamond (BDD) surfaces, are discussed. After a description of the preparation procedure and the morphological characterization of BDD/IrO2 and BDD/RuO2 samples, the dispersion efficiency of these oxides on BDD was estimated for different loading, using cyclic voltammetry. The electrochemical behavior of 1,4 benzoquinone/hydroquinone redox couple, oxygen evolution and organics oxidation reactions have been investigated at BDD/IrO2 samples; in turn, the chlorine evolution reaction has been studied at BDD/RuO2 electrodes. “Non-catalytic” and “catalytic” models are proposed to explain the modification of the electrochemical behavior of BDD by low and high oxide loading, respectively.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
