Physicochemical characterization of Co3O4 prepared by thermal decomposition II: Response to solution pH

Garavaglia, Rosanna; Mari, C.M.; Trasatti, S.

doi:10.1016/0376-4583(84)90074-8

Cited by 66 publications

(29 citation statements)

References 7 publications

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“…An one hour final annealing at the same temperature and O 2 flux completed the procedure. This Ti-support pretreatment and the electrode mounting are described elsewhere 15,16 .…”

Section: Methodsmentioning

confidence: 99%

The oxidation of formaldehyde on high overvoltage DSA type electrodes

Motheo¹,

González²,

Tremiliosi‐Filho³

et al. 2000

J. Braz. Chem. Soc.

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Neste trabalho a oxidação eletroquímica do formaldeído é estudada sobre eletrodos dimensionalmente estáveis preparados por decomposição térmica de percursores (correspondentes cloretos The electrolyses were performed galvanostatically in a filter press cell with 0.5 mol L -1 H 2 SO 4 solutions with initial formaldehyde concentration equal to 100 mmol L -1 . The concentration of formaldehyde decreases fast with the electrolysis time, with the ternary anode (Ir + Ru + Ti) presenting the best performance for this step. The anode containing only Ir, despite presenting the higher superficial charge, is the one with the lowest electrocatalytic activity. For the formic acid oxidation step, the presence of iridium in the anode composition does not promote the process, the anode containing only ruthenium being the most effective for this step.

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“…An one hour final annealing at the same temperature and O 2 flux completed the procedure. This Ti-support pretreatment and the electrode mounting are described elsewhere 15,16 .…”

Section: Methodsmentioning

confidence: 99%

The oxidation of formaldehyde on high overvoltage DSA type electrodes

Motheo¹,

González²,

Tremiliosi‐Filho³

et al. 2000

J. Braz. Chem. Soc.

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“…Mounted as described elsewhere [15], electrodes were thus subject to the following experiments: (1) Cyclic voltammetry in a limited potential range to obtain the 'electrochemical spectrum' of the surface (and the related surface charge). CV was repeated after each group of experiments.…”

Section: Resultsmentioning

confidence: 99%

“…Samples were mounted in a Teflon holder as described elsewhere [15]. The apparent surface area exposed to the solution was 1 cm 2 on each of the two sides of the platelets.…”

Section: Supportmentioning

confidence: 99%

Effect of composition on the surface and electrocatalytic properties of Ti/IrO x +RhO x electrodes: H2 evolution from acidic solution

Popa

Guerrini

2005

J Appl Electrochem

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IrO x +RhO x mixed oxide layers on a Ti support were prepared by thermal decomposition at 450°C over the whole composition range. The temperature range 450-600°C was explored for the composition 30 mol% RhO x . Samples were characterized by means of SEM, XPS, cyclic voltammetry and polarization curves. Their electrocatalytic properties were tested for the H 2 evolution reaction. The following experimental parameters were scrutinized: voltammetric charge, Tafel slope, reaction order (H + ), electrical resistance of electrocatalysts. The electrocatalytic properties were evaluated at constant potential as a function of temperature as well as of composition. The electrode stability was assessed by comparing CV curves before and after groups of experiments. A reaction mechanism has been proposed. RhO x is more active than IrO x , its effect showing up for compositions >30 mol%.

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“…The electrode preparation protocol was performed in duplicate. Details of the preparation and final mounting of the electrodes have been described elsewhere [26].…”

Section: Electrode Preparationmentioning

confidence: 99%

Electrooxidation and inhibition of the antibacterial activity of oxytetracycline hydrochloride using a RuO2 electrode

et al. 2008

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This work reports on the electrochemical oxidation of oxytetracycline hydrochloride (OTCH) [(4S, 4aS,5aS,6S,12aS)-4-dimethylamino-1,4,4a,5, 5a,6,11,12a-octahydro-3,6,10,12,12a-hexahydroxy-6-methyl-1,11-dioxonaphthacene-2-carboxamide] on a RuO 2 electrode (DSA Ò ) by cyclic voltammetry and electrolysis. The electrocatalytic efficiency of the electrode material was investigated as a function of different aqueous buffer solutions with pH values of 2.10 and 5.45 as supporting electrolytes. Spectrophotometric studies have shown that OTCH is stable in such solutions. The electrochemical degradation of OTCH is pseudo-first order at both pH values investigated with rate constants, k, of 9.9 9 10 -5 s -1 (pH 2.10) and 1.9 9 10 -4 s -1 (pH 5.45) at 21 ± 1°C. Microbiological studies with Staphylococcus aureus ATCC 29213 have shown that OTCH lost antibacterial activity after 120 min of electrolysis at 50 mA cm -2 .

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Physicochemical characterization of Co3O4 prepared by thermal decomposition II: Response to solution pH

Cited by 66 publications

References 7 publications

The oxidation of formaldehyde on high overvoltage DSA type electrodes

The oxidation of formaldehyde on high overvoltage DSA type electrodes

Effect of composition on the surface and electrocatalytic properties of Ti/IrO x +RhO x electrodes: H2 evolution from acidic solution

Electrooxidation and inhibition of the antibacterial activity of oxytetracycline hydrochloride using a RuO2 electrode

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