The Potential of the Electrocapillary Maximum of Mercury

Grahame, David C.; Larsen, R.P.; Poth, Marilyn A.

doi:10.1021/ja01177a010

Cited by 90 publications

(30 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This procedure assumes that the impedance of the double-layer is equivalent to a series capacityresistance combination and the rate of adsorption is diffusion-controlled. 23 The potential of zero charge ( z E ) was measured for each solution by the method of streaming mercury electrode, 24,25 with an accuracy of ± 0.1 mV. The surface tension at potential of zero charge ( z γ ) was determined using the method of highest pressure inside the mercury drop presented by Schiffrin.…”

Section: Elaboration Of Experimental Datamentioning

confidence: 99%

The Influence of Water Activity on Double Layer Parameters on the Interface Mercury/Chlorates (VII) in the Presence of Cysteine

Nosal‐Wiercińska¹

2013

Croat. Chem. Acta

View full text Add to dashboard Cite

Abstract. The influence both the cysteine concentration and water activity on the double layer parameters on the interface mercury/ chlorates (VII) was examined. The adsorption parameters for the double layer were calculated from a double-layer differential capacity measurement extrapolated to zero frequency.The values of the relative surface excess increase of the cysteine concentration and chlorates (VII) solutions. It was found that the values of free adsorption energy and interactions constants, obtained from Frumkin and virial isotherms, depend on the supporting electrolyte concentration. The changes of determined parameters in the function of water activity water point at the participation of

show abstract

Section: Elaboration Of Experimental Datamentioning

confidence: 99%

The Influence of Water Activity on Double Layer Parameters on the Interface Mercury/Chlorates (VII) in the Presence of Cysteine

Nosal‐Wiercińska¹

2013

Croat. Chem. Acta

View full text Add to dashboard Cite

show abstract

“…The zero charge potentials (E Z ) were determined by the use of a streaming electrode [38,39], with the accuracy ± 0.1 mV. The surface tension at potential of zero charge (g z ) was measured using the method of highest pressure inside the mercury drop presented by Schiffrin [40].…”

Section: Adsorption Measurementsmentioning

confidence: 99%

Catalytic activity of thiourea and its selected derivatives on electroreduction of In(III) in chlorates(VII)

Nosal‐Wiercińska

2010

Open Chemistry

View full text Add to dashboard Cite

It was found that thiourea, N-methylthiourea, N,N'-dimethylthiourea and N-allylthiourea accelerate the electroreduction process of In(III) ions in chlorates(VII). These substances are adsorbed on mercury from chlorates(VII). The relative surface excesses of thiourea and its derivatives increase with the increase of their concentrations and electrode charge. After adding thiourea, N-methylthiourea, N,N'-dimethylthiourea and N-allylthiourea to the solution an acceleration of the electroreduction process of In(III) ions occurs. This process depends on two factors: the adsorption of an accelerating substance on mercury and on the formation of complexes between a depolarizer and an accelerating substance on the electrode surface. The equilibrium of this complexing reaction determines the magnitude of the catalytic effect.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

show abstract

“…The potential of zero charge, E z , was measured using a streaming electrode. 13 The interfacial tension γ z , at E z was measured by the maximum bubble pressure method according to Schiffrin.…”

Section: Methodsmentioning

confidence: 99%

Adsorption of Tetramethylthiourea in the Presence of Cationic Detergent at Interface Electrode / Aqueous Perchlorate Solutions

2011

View full text Add to dashboard Cite

Abstract. The mixed adsorption layers of tetramethylthiourea and a cationic detergent formed at electrode surface in NaClO 4 (1 mol dm -3 ) are described. The systems were characterized by the measurement of differential capacity, zero charge potential, and surface tension at this potential. The data were analyzed to obtain the surface pressure and relative surface excess of tetramethylthoiurea as a function of electrode charge at bulk concentration of studied compounds. It was stated that the adsorbing tetramethylthoiurea molecule pushed out the water molecule instead of the detergent molecule from the electrode surface. The constants of the Frumkin and corrected Flory-Huggins isotherm point to a decreased TMTU adsorption energy in the cationic detergents presence and stronger repulsive interaction. Electrostatic parameters of the inner layer were assigned. In the range of more negative potentials, mixed adsorption layers were described by investigating the kinetics of the Zn 2+ ions electroreduction as a piloting ion. (doi: 10.5562/cca1791)

show abstract

The Potential of the Electrocapillary Maximum of Mercury

Cited by 90 publications

References 0 publications

The Influence of Water Activity on Double Layer Parameters on the Interface Mercury/Chlorates (VII) in the Presence of Cysteine

The Influence of Water Activity on Double Layer Parameters on the Interface Mercury/Chlorates (VII) in the Presence of Cysteine

Catalytic activity of thiourea and its selected derivatives on electroreduction of In(III) in chlorates(VII)

Adsorption of Tetramethylthiourea in the Presence of Cationic Detergent at Interface Electrode / Aqueous Perchlorate Solutions

Contact Info

Product

Resources

About