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Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak

Published/Copyright: September 24, 2012
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 226 Issue 9-10

Abstract

Impedance spectra of Pt(100) in aqueous 0.5 M H2SO4 and 1 M HCl solutions have been measured in a potential range which includes the hydrogen adsorption/desorption peak and the double layer region. In the latter potential region the positive surface charge and the large dc capacitance imply that the double layer consist mostly of adsorbed anions; the capacitance spectra are markedly different for the two systems, revealing that adsorption/desorption is much faster for sulphate than for chloride.

Keywords: Interface; Adsorption; Double Layer; Capacitance; Charge
* Correspondence address: Hungarian Academy of Sciences, Institute of Materials and Environmental Chemistry, Pusztaszeri út 59-67, Research Centre for Natural Sciences, H1025 Budapest, Ungarn,
Published Online: 2012-9-24
Published in Print: 2012-10-1

© by Oldenbourg Wissenschaftsverlag, München, Germany

Articles in the same Issue

  1. Preface
  2. Building versus Structure Elements: Ionic Charge Carriers in Solids
  3. A Brief Review of Determinism in the Prediction of Localized Corrosion Damage
  4. La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route
  5. Nitrate Reduction on Platinum (111) Surfaces Modifiedl with Bi: Single Crystalsl and Nanoparticles
  6. Fundamental Investigation of the HER on a Pt(111) Surface at Temperatures down to 120K
  7. Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak
  8. Lifting of Thermally-Induced Surface Reconstruction on Au(100) Electrode by Protonated Molecules of Dopamine
  9. The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
  10. Lead Underpotential Deposition on Pt-submonolayer Modified Au(111)
  11. Adsorption of Solvent Cations on Au(111) and Au(100) in Alkylimidazolium-Based Ionic Liquids – Worm-Like versus Micelle-Like Structures
  12. Measurements of the Potentials of Zero Free Charge and Zero Total Charge for 1-thio- ± bβ-D-glucose and DPTL Modified Au(111) Surface in Different Electrolyte Solutions
  13. Tert-Pentanol Adsorption on Ag(100) and Ag(110) from an Aqueous Solution and its Comparison with that on Ag(111), Hg, Ga and Bi(001)
  14. Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer Electrocatalysts with High Activity and Stability in the Oxygen Reduction Reaction
  15. Surface Modification of a n-Si(111) Electrode through Aldehyde Grafting and Subsequent Metallization: Theory and Experiment
  16. Ion Transfer Mechanisms Accompanying p-Doping of Poly(3,4-Ethylenedioxythiophene) Films in Deep Eutectic Solvents
  17. Adsorption of Additives: Hardness and Softness at Electrified Interfaces
https://doi.org/10.1524/zpch.2012.0243
Keywords for this article
Interface; Adsorption; Double Layer; Capacitance; Charge

Articles in the same Issue

  1. Preface
  2. Building versus Structure Elements: Ionic Charge Carriers in Solids
  3. A Brief Review of Determinism in the Prediction of Localized Corrosion Damage
  4. La0.6Sr0.4CoO3-δ (LSC) Thin Film Electrodes with Very Fast Oxygen Reduction Kinetics Prepared by a Sol-Gel Route
  5. Nitrate Reduction on Platinum (111) Surfaces Modifiedl with Bi: Single Crystalsl and Nanoparticles
  6. Fundamental Investigation of the HER on a Pt(111) Surface at Temperatures down to 120K
  7. Impedance Spectra of Pt(100) in Aqueous H2SO4 and HCl Solutions Around the Hydrogen Adsorption-Desorption Peak
  8. Lifting of Thermally-Induced Surface Reconstruction on Au(100) Electrode by Protonated Molecules of Dopamine
  9. The Under Potential Deposition of Cu on Au (111) in Nonaqueous Acetonitrile
  10. Lead Underpotential Deposition on Pt-submonolayer Modified Au(111)
  11. Adsorption of Solvent Cations on Au(111) and Au(100) in Alkylimidazolium-Based Ionic Liquids – Worm-Like versus Micelle-Like Structures
  12. Measurements of the Potentials of Zero Free Charge and Zero Total Charge for 1-thio- ± bβ-D-glucose and DPTL Modified Au(111) Surface in Different Electrolyte Solutions
  13. Tert-Pentanol Adsorption on Ag(100) and Ag(110) from an Aqueous Solution and its Comparison with that on Ag(111), Hg, Ga and Bi(001)
  14. Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer Electrocatalysts with High Activity and Stability in the Oxygen Reduction Reaction
  15. Surface Modification of a n-Si(111) Electrode through Aldehyde Grafting and Subsequent Metallization: Theory and Experiment
  16. Ion Transfer Mechanisms Accompanying p-Doping of Poly(3,4-Ethylenedioxythiophene) Films in Deep Eutectic Solvents
  17. Adsorption of Additives: Hardness and Softness at Electrified Interfaces
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