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

Silva, Fernande; Sottomayor, M.J.; Hamelin, A.; Stoicoviciu, L.

doi:10.1016/0022-0728(90)85024-y

Cited by 31 publications

(14 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: 93%

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: 93%

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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“…More specifically, S * is positive only in a range of negative charges with a maximum around -5 µC cm −2 , a value comparable to that for Au. Further, the values of S * , in the charge range where they are negative, decrease in the order (111) > (100) > (110), also in qualitative agreement with the behaviour of Au single crystal faces [28].…”

Section: Resultssupporting

confidence: 76%

“…The curves appear well ordered with the typical negative temperature coefficient of capacitance (C decreases as temperature increases) over most of the potential range with the exception of the positive extreme, as observed also with Au single crystal electrodes [28]. However, such a detail may not appear, as shown in figure 2 where a family of capacitance curves for the (110) face, also obtained by the method of "continuity", exhibits a negative temperature coefficient all over the potential range except the negative extreme where the curves merge.…”

Section: Resultssupporting

confidence: 61%

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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“…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

155

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

Cited by 31 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

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

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

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