New insight on the behavior of the irreversible adsorption and underpotential deposition of thallium on platinum (111) and vicinal surfaces in acid electrolytes

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New insight on the behavior of the irreversible adsorption and underpotential deposition of thallium on platinum (111) and vicinal surfaces in acid electrolytes. / Rodriguez, P.; García-Aráez, N.; Herrero, E.; Feliu, J. M.

In: Electrochimica Acta, Vol. 151, 01.01.2015, p. 319-325.

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@article{c18feb503a5d4eae9cc031ddb9768c37,
title = "New insight on the behavior of the irreversible adsorption and underpotential deposition of thallium on platinum (111) and vicinal surfaces in acid electrolytes",
abstract = "We report, for the first time, the electrochemical behavior of thallium irreversibly adsorbed on Pt (111) and platinum stepped surfaces composed of (111) terraces and monoatomic steps. Similar to the case of thallium UPD, the voltammograms obtained after thallium irreversible adsorption present three characteristic features. After a careful analysis of the effect of the thallium concentration, the concentration and nature of the anion of the supporting electrolyte and the pH of the solution on these voltammetric features, we have been able to ascribe these processes to Tl/Tl+ oxidation and anion adsorption on the Tl-modified surface. In addition, the results obtained with stepped surfaces, indicate that some of the features are clearly associated to the presence of (111) surface domains, and thus they could be used for the quantification of these sites.",
keywords = "Thallium, Irreversible adsorption, Underpotential deposition, Single crystal, Anions",
author = "P. Rodriguez and N. Garc{\'i}a-Ar{\'a}ez and E. Herrero and Feliu, {J. M.}",
year = "2015",
month = jan,
day = "1",
doi = "10.1016/j.electacta.2014.11.019",
language = "English",
volume = "151",
pages = "319--325",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - New insight on the behavior of the irreversible adsorption and underpotential deposition of thallium on platinum (111) and vicinal surfaces in acid electrolytes

AU - Rodriguez, P.

AU - García-Aráez, N.

AU - Herrero, E.

AU - Feliu, J. M.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We report, for the first time, the electrochemical behavior of thallium irreversibly adsorbed on Pt (111) and platinum stepped surfaces composed of (111) terraces and monoatomic steps. Similar to the case of thallium UPD, the voltammograms obtained after thallium irreversible adsorption present three characteristic features. After a careful analysis of the effect of the thallium concentration, the concentration and nature of the anion of the supporting electrolyte and the pH of the solution on these voltammetric features, we have been able to ascribe these processes to Tl/Tl+ oxidation and anion adsorption on the Tl-modified surface. In addition, the results obtained with stepped surfaces, indicate that some of the features are clearly associated to the presence of (111) surface domains, and thus they could be used for the quantification of these sites.

AB - We report, for the first time, the electrochemical behavior of thallium irreversibly adsorbed on Pt (111) and platinum stepped surfaces composed of (111) terraces and monoatomic steps. Similar to the case of thallium UPD, the voltammograms obtained after thallium irreversible adsorption present three characteristic features. After a careful analysis of the effect of the thallium concentration, the concentration and nature of the anion of the supporting electrolyte and the pH of the solution on these voltammetric features, we have been able to ascribe these processes to Tl/Tl+ oxidation and anion adsorption on the Tl-modified surface. In addition, the results obtained with stepped surfaces, indicate that some of the features are clearly associated to the presence of (111) surface domains, and thus they could be used for the quantification of these sites.

KW - Thallium

KW - Irreversible adsorption

KW - Underpotential deposition

KW - Single crystal

KW - Anions

UR - http://www.scopus.com/inward/record.url?scp=84911932530&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2014.11.019

DO - 10.1016/j.electacta.2014.11.019

M3 - Article

VL - 151

SP - 319

EP - 325

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -