The point of zero charge of ruthenium dioxide

Ardizzone, S.; Siviglia, Pierino; Trasatti, S.

doi:10.1016/s0022-0728(81)80175-1

Cited by 44 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PZZP is the pH at which the concentration of adsorbed OH-and H + ions is equal. Ardizzone et al (27) have measured the PZZP of suspensions of RuO~ prepared by thermal decomposition of RuC1s. nH20 in two different temperatures, 400 ~ and 700~ They have reported that the PZZP of the sample prepared at 400~ is 5.1 • 0.05 while the one prepared at 700~ is 6.1 • 0.05.…”

Section: B/~ [Exp (--Y) --Exp(2y)] [3] [Exp (Y) --1] [1 + 2 Exp (--Y)]mentioning

confidence: 99%

See 1 more Smart Citation

The Potential of Zero Charge of Oriented Single‐Crystal RuO2 in Aqueous Electrolytes

Tomkiewicz

Huang

Pollak

1983

J. Electrochem. Soc.

View full text Add to dashboard Cite

The impedance of 5 virgin faces of single crystal RuO2 was measured over the frequency range of 1-106Hz, in three electrolytes--10-~M and 1M Na2SO4 and 10-3M KF. The fastest relaxing capacitive element was identified, and its values measured as a function of the electrode potential. A maj or contribution to this capacitance is due to the double layer capacitance. The potential of zero charge in 10-3M NasSO4 was measured for the five crystalline faces. The variations of the potential of zero charge with the crystalline faces are small. "Average" value is (-0.09 -+ 0.

show abstract

Section: B/~ [Exp (--Y) --Exp(2y)] [3] [Exp (Y) --1] [1 + 2 Exp (--Y)]mentioning

confidence: 99%

“…: 0.71 --0.059 pH [7] and substituting the PZZC values in this equation, Ardizzone et al (27), obtained Ug=o ---k0.41V vs. SCE for the sample treated at 400~ and -b0.35V vs.…”

Section: U(sce)mentioning

confidence: 99%

The Potential of Zero Charge of Oriented Single‐Crystal RuO2 in Aqueous Electrolytes

Tomkiewicz

Huang

Pollak

1983

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Dipartimento di Chimica dell'Università, via L. Borsari, 46, Ferrara I-44100, Italy e-mail: dbtcll@unife.it influence properties like composition, microstructure and morphology [10][11][12][13]. This makes the reproducibility of their preparation, and of their performance, extremely poor.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of thallium cations on RuO2–TiO2 electrodes

et al. 2007

View full text Add to dashboard Cite

The electrochemical ion-exchange properties of RuO 2 -TiO 2 film electrodes with different composition have been studied in acidic and alkaline media. Thalliumcation uptake has been observed only from the latter and its extent was found to be a function of electrode potential and composition. At potentials near 0.0 V (RHE), the amount of adsorbed Tl + exhibited a maximum, and decreased with increasing potential, reaching a broad minimum in the range 0.4-0.8 V. A further increase in the electrode potential, above about 1.0 V, led to an increase of adsorbed thallium species, essentially due to deposition of a few layers of Tl(III) hydroxide. In fact, the release of the latter species was found to be much slower than that of thallium ions adsorbed at 0.0 V. For the latter, in turn, the double injection/ejection mechanism, currently accepted to explain the charge-storage in oxide electrodes, seems to be confirmed. The high C values attained at 0.0 V indicate that the large ionic radius of Tl + does not prevent its diffusion through the thinner pore texture of the oxide coatings, possibly because of its poor hydration, related with lower charge density at the ion surfaces.

show abstract

“…Colloidal RuO2 was prepared by thermal decomposition of RuC13 under an oxygen stream at 405-420 ~ as described by Ardizzone et al (21). After preparation it was washed thoroughly at high and low pH to remove residual C1.…”

Section: Methodsmentioning

confidence: 99%

Colloid-chemical properties of ruthenium dioxide in relation to catalysis of the photochemical generation of hydrogen

Kleijn

Lyklema

1987

Colloid & Polymer Sci

View full text Add to dashboard Cite

A colloid of RuO2, prepared by thermal decomposition of RuCI3, was characterized with respect to its colloid-chemicalproperties and assessed as a catalyst for photochemical production of hydrogen. The RuO2 proved to be unstable towards coagulation, even under conditions of low electrolyte concentration and in the presence of polymers. The sol manifested the same electric double layer characteristics as many other oxide dispersions. The point of zero charge (p.z.c.) in indifferent electrolyte was positioned at pH 5.75.Adsorption of methylviologen (MV2+), a commonly used electron relay in photochemical systems, at the RuO2/solution interface is mainly a result of attractive coulombic interactions (above the p.z.c, of RuO2)~ No indications have been found that it adsorbs on RuO 2 under the operational conditions of hydrogen production. In the hydrogen production system, the mass transfer of methylviologen radicals (MV § is a rate-limiting factor. As a function of the methylviologen concentration, the catalytic production of hydrogen passes through a maximum.

show abstract

The point of zero charge of ruthenium dioxide

Cited by 44 publications

References 19 publications

The Potential of Zero Charge of Oriented Single‐Crystal RuO2 in Aqueous Electrolytes

The Potential of Zero Charge of Oriented Single‐Crystal RuO2 in Aqueous Electrolytes

Adsorption of thallium cations on RuO2–TiO2 electrodes

Colloid-chemical properties of ruthenium dioxide in relation to catalysis of the photochemical generation of hydrogen

Contact Info

Product

Resources

About