The temperature dependence of the double-layer properties of gold faces in perchloric acid solutions

Hamelin, A.; Stoicoviciu, L.; Silva, A. Fernando

doi:10.1016/0022-0728(87)85134-3

Cited by 60 publications

(26 citation statements)

References 25 publications

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“…Approximately parabolic plots were obtained for the entropy of formation of the double layer with the potential of the maximum located at a potential slightly negative to the pzc. This result is in qualitative agreement with previous measurements for mercury electrodes [30][31][32] and for gold single crystal electrodes [33,43]. It has been considered that the main contribution to the entropy of the interphase comes from the configurational entropy of water molecules.…”

Section: Discussionsupporting

confidence: 94%

“…The potential at which this response is zero can be identified as the potential of maximum entropy of formation of the double layer [26,28]. This is located at potentials negative to the pzc, 2 which can be interpreted to be a result of the natural orientation of the water dipoles with the negative end toward the metal when this is discharged [30][31][32][33]. Then, a negative charge on the metal is necessary to achieve a maximum disorder in the adlayer of water molecules.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Coulostatic potential transients induced by laser heating of platinum stepped electrodes: influence of steps on the entropy of double layer formation

Climent

Coles

Compton

et al. 2004

Journal of Electroanalytical Chemistry

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Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Coulostatic potential transients induced by laser heating of platinum stepped electrodes: influence of steps on the entropy of double layer formation

Climent

Coles

Compton

et al. 2004

Journal of Electroanalytical Chemistry

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“…In the case of gold, particular care should be taken to control the nature of the surface structure since this can be easily altered by the surface reconstruction phenomena [7,17]. For gold and silver, a lot of information has been gathered about the influence of the surface structure [17][18][19][20][21], specific adsorption and temperature [22][23][24][25][26][27] on the potential of zero charge.…”

Section: Introductionmentioning

confidence: 99%

Towards the understanding of the interfacial pH scale at Pt(1 1 1) electrodes

Rizo

Sitta

Herrero

et al. 2015

Electrochimica Acta

150

199

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Abstract.The determination of the potentials of zero total and free charge, pztc and pzfc respectively, were made in a wide pH range by using the CO displacement method and the same calculation assumptions used previously for Pt(111) electrodes in contact with nonspecifically adsorbing anions. Calculation of the pzfc involves, in occasions, long extrapolations that lead us to the introduction of the concept of potential of zero extrapolated charge (pzec). It was observed that the pztc changes with pH but the pzec is independent of this parameter. It was observed that the pztc>pzec at pH > 3.4 but the opposite is true for pH>3.4. At the latter pH both pzec and pztc coincide. This defines two different pH regions and means that adsorbed hydrogen has to be corrected in the "acidic" solutions at the pztc while adsorbed OH is the species to be corrected in the "alkaline" range. The comparison of the overall picture suggests that neutral conditions at the interface are attained at significantly acidic solutions than those at the bulk.

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“…Capacitance data were further worked out to derive the entropy of formation of the interface, S * , according to a procedure described by Silva and coworkers [30]. The results are shown in figures 8 and 9 for the "continuity" and the "discontinuity" method, respectively.…”

Section: Resultsmentioning

confidence: 99%

THE TEMPERATURE COEFFICIENT OF THE POTENTIAL OF ZERO CHARGE OF Ag SINGLE CRYSTAL FACE ELECTRODES IN AQUEOUS ELECTROLYTE SOLUTION

Doubova¹,

Trasatti²

2001

Condens. Matter Phys.

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The temperature coefficient of the potential of zero charge of Ag single crystal electrodes, dE σ=0 /dT , was measured by recording capacitance curves at different temperatures. Two experimental approaches were adopted: the "continuity" and the "discontinuity" method, consisting in recording curves at different temperatures without and with extraction of the electrode from the solution, respectively. Appreciable differences have been observed. The origin of the differences and their significance are discussed in terms of keeping the appropriate conditions for the electrode/solution interface during the experiments.

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The temperature dependence of the double-layer properties of gold faces in perchloric acid solutions

Cited by 60 publications

References 25 publications

Coulostatic potential transients induced by laser heating of platinum stepped electrodes: influence of steps on the entropy of double layer formation

Coulostatic potential transients induced by laser heating of platinum stepped electrodes: influence of steps on the entropy of double layer formation

Towards the understanding of the interfacial pH scale at Pt(1 1 1) electrodes

THE TEMPERATURE COEFFICIENT OF THE POTENTIAL OF ZERO CHARGE OF Ag SINGLE CRYSTAL FACE ELECTRODES IN AQUEOUS ELECTROLYTE SOLUTION

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