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The potential of zero total charge of Pt nanoparticles and polycrystalline electrodes with different surface structure: The role of anion adsorption in fundamental electrocatalysis

In the present paper anion effects are discussed on different shape-controlled Pt nanoparticles as well as on polycrystalline Pt electrodes of different surface structures. In particular, the potentials of zero total charge (pztc) were determined by using the CO displacement approach, both in sulphu... Full description

Journal Title: Electrochimica Acta 2010, Vol.55(27), pp.7982-7994
Main Author: Chen, Qing-Song
Other Authors: Solla-Gullón, José , Sun, Shi-Gang , Feliu, Juan M
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0013-4686 ; E-ISSN: 1873-3859 ; DOI: 10.1016/j.electacta.2010.03.050
Link: https://www.sciencedirect.com/science/article/pii/S0013468610004524
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recordid: elsevier_sdoi_10_1016_j_electacta_2010_03_050
title: The potential of zero total charge of Pt nanoparticles and polycrystalline electrodes with different surface structure: The role of anion adsorption in fundamental electrocatalysis
format: Article
creator:
  • Chen, Qing-Song
  • Solla-Gullón, José
  • Sun, Shi-Gang
  • Feliu, Juan M
subjects:
  • Potential of Zero Total Charge
  • Shape-Controlled Pt Nanoparticles
  • Polycrystalline Pt
  • CO Coverage
  • Anion Adsorption
  • Real Surface Area
  • Engineering
  • Chemistry
ispartof: Electrochimica Acta, 2010, Vol.55(27), pp.7982-7994
description: In the present paper anion effects are discussed on different shape-controlled Pt nanoparticles as well as on polycrystalline Pt electrodes of different surface structures. In particular, the potentials of zero total charge (pztc) were determined by using the CO displacement approach, both in sulphuric and perchloric media. The CO monolayer oxidative stripping was studied on the different samples. CO coverages were independent of the electrolyte provided that the true CO stripping charges, corrected for double layer contributions are compared to the charge involved only in the hydrogen adsorption region. The classical charge density normalization process is discussed and small changes are proposed. Then, criteria to evaluate the real surface area of platinum electrodes from charge measurements are proposed in both electrolytes.
language: eng
source:
identifier: ISSN: 0013-4686 ; E-ISSN: 1873-3859 ; DOI: 10.1016/j.electacta.2010.03.050
fulltext: fulltext
issn:
  • 0013-4686
  • 00134686
  • 1873-3859
  • 18733859
url: Link


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titleThe potential of zero total charge of Pt nanoparticles and polycrystalline electrodes with different surface structure: The role of anion adsorption in fundamental electrocatalysis
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subjectPotential of Zero Total Charge ; Shape-Controlled Pt Nanoparticles ; Polycrystalline Pt ; CO Coverage ; Anion Adsorption ; Real Surface Area ; Engineering ; Chemistry
descriptionIn the present paper anion effects are discussed on different shape-controlled Pt nanoparticles as well as on polycrystalline Pt electrodes of different surface structures. In particular, the potentials of zero total charge (pztc) were determined by using the CO displacement approach, both in sulphuric and perchloric media. The CO monolayer oxidative stripping was studied on the different samples. CO coverages were independent of the electrolyte provided that the true CO stripping charges, corrected for double layer contributions are compared to the charge involved only in the hydrogen adsorption region. The classical charge density normalization process is discussed and small changes are proposed. Then, criteria to evaluate the real surface area of platinum electrodes from charge measurements are proposed in both electrolytes.
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titleThe potential of zero total charge of Pt nanoparticles and polycrystalline electrodes with different surface structure: The role of anion adsorption in fundamental electrocatalysis
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In the present paper anion effects are discussed on different shape-controlled Pt nanoparticles as well as on polycrystalline Pt electrodes of different surface structures. In particular, the potentials of zero total charge (pztc) were determined by using the CO displacement approach, both in sulphuric and perchloric media. The CO monolayer oxidative stripping was studied on the different samples. CO coverages were independent of the electrolyte provided that the true CO stripping charges, corrected for double layer contributions are compared to the charge involved only in the hydrogen adsorption region. The classical charge density normalization process is discussed and small changes are proposed. Then, criteria to evaluate the real surface area of platinum electrodes from charge measurements are proposed in both electrolytes.

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abstract

In the present paper anion effects are discussed on different shape-controlled Pt nanoparticles as well as on polycrystalline Pt electrodes of different surface structures. In particular, the potentials of zero total charge (pztc) were determined by using the CO displacement approach, both in sulphuric and perchloric media. The CO monolayer oxidative stripping was studied on the different samples. CO coverages were independent of the electrolyte provided that the true CO stripping charges, corrected for double layer contributions are compared to the charge involved only in the hydrogen adsorption region. The classical charge density normalization process is discussed and small changes are proposed. Then, criteria to evaluate the real surface area of platinum electrodes from charge measurements are proposed in both electrolytes.

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lad01Electrochimica Acta