Evaluation of titanium dioxide and cerium oxide as anodes for the electrooxidation of toluene

D’Elia, Luis F.; Rincón, Luís; Ortíz, Rina

doi:10.1016/j.electacta.2004.04.014

Cited by 13 publications

(11 citation statements)

References 21 publications

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“…0 V, all plots flatten-off, asa result of the occurrence of cathodic Faraday processes, such as the reduction of some oxygen species that were formed at potentials above ca. 2.5 V (Figure ) and adsorbed at the film surface, or the reduction of the oxide film . From Figure , some valuable information about the effects of fluoride on the surface and/or bulk physicochemical properties of the oxide films formed on titanium can be drawn.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Fluoride on the Physicochemical Properties of Anodic Oxide Films Formed on Titanium Surfaces

2008

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The influence of fluoride (and its concentration) on the electrochemical and semiconducting properties of anodic oxide films formed on titanium surfaces was investigated by performing electrochemical measurements (potentiodynamic/pontiostatic polarization, open circuit potential (OCP), and capacitance measurements) for a titanium/oxide film/solution interface system in fluoride-containing 1.0 M HClO(4) solution. On the basis of the Mott-Schottky analysis, and with taking into account both the surface reactions (or, say, the specifically chemical adsorption) of fluoride ions at the oxide film surface and the migration/intercalation of fluoride ions into the oxide film, the changes in the electrochemical behavior of titanium measured in this work (e.g., the blocked anodic oxygen evolution, the increased anodic steady-state current density, the positively shifted flat band potential, and the positively shifted film breakdown potential) were interpreted by the changes in the surface and the bulk physicochemical properties (e.g., the surface charges, surface state density, doping concentration, and the interfacial potential drops) of the anodic films grown on titanium. The fluoride concentrations tested in this work can be divided into three groups according to their effect on the electrochemical behavior of the oxide films: < or =0.001 M, 0.001-0.01 M, and >0.01 M. By tracing the changes of the OCP of the passivated titanium in fluoride-containing solutions, the deleterious/depassive effect of fluoride ions on the titanium oxide films was examined and evaluated with the parameter of the film breakdown time. It was also shown that the films anodically formed on titanium at higher potentials (>2.5 V) exhibited significantly higher stability against the fluoride attack than that either formed at lower potentials (<2.5 V) or formed natively in the air.

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Section: Resultsmentioning

confidence: 99%

The Influence of Fluoride on the Physicochemical Properties of Anodic Oxide Films Formed on Titanium Surfaces

2008

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“…The reason that makes these methods widely used in many applications mainly the destruction of toxic and non-degradable organics by direct or indirect oxidation [7][8][9][10][11][12][13]. Electrochemical treatment of wastewater offers high removal efficiencies and has lower temperature requirements compared to non-electrochemical treatment.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic oxidation of phenol using Ni–Al2O3 composite-coating electrodes

Mahmoud

Ahmed

2009

Journal of Alloys and Compounds

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“…Pt nanoparticles have been dispersed on a wide variety of substrates such as carbon nanomaterials, 3 4 Nafion membranes, 5 6 polymers, 7 8 polymer-oxide nanocomposites, 9 threedimensional organic matrices, 10 and oxide matrices. [11][12][13][14][15][16][17][18] Most often the catalyst is dispersed on a conventional carbon support and the support material influences the catalytic activity through metal support interaction. Dispersion of Pt particles on an oxide matrix can lead, depending mainly on the nature of support, to Pt supported oxide system that shows better behaviour than pure Pt.…”

Section: Introductionmentioning

confidence: 99%

Electro-Oxidation of Methanol on TiO<SUB>2</SUB> Nanotube Supported Platinum Electrodes

Maiyalagan¹,

Viswanathan²,

Varadaraju³

2006

J. Nanosci. Nanotech.

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TiO2 nanotubes have been synthesized using anodic alumina membrane as template. Highly dispersed platinum nanoparticles have been supported on the TiO2 nanotube. The supported system has been characterized by electron microscopy and electrochemical analysis. SEM image shows that the nanotubes are well aligned and the TEM image shows that the Pt particles are uniformly distributed over the TiO2 nanotube support. A homogeneous structure in the composite nanomaterials is indicated by XRD analysis. The electrocatalytic activity of the platinum catalyst supported on TiO2 nanotubes for methanol oxidation is found to be better than that of the standard commercial E-TEK catalyst.

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Evaluation of titanium dioxide and cerium oxide as anodes for the electrooxidation of toluene

Cited by 13 publications

References 21 publications

The Influence of Fluoride on the Physicochemical Properties of Anodic Oxide Films Formed on Titanium Surfaces

The Influence of Fluoride on the Physicochemical Properties of Anodic Oxide Films Formed on Titanium Surfaces

Electrocatalytic oxidation of phenol using Ni–Al2O3 composite-coating electrodes

Electro-Oxidation of Methanol on TiO<SUB>2</SUB> Nanotube Supported Platinum Electrodes

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