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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

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

Abstract

The immersion method was used to measure the potential of zero free charge (Epzfc) of a bare Au(111) electrode and the electrode modified by self-assembled monolayers (SAMs) of 1-thio-β-D-glucose (β-Tg) and 2,3-di-O-phytanyl-sn-glycerol-1-tetraethylene glycol-D,L-α-lipoic acid ester (DPTL). The measurements were performed in three electrolyte solutions: 0.1 M NaH2PO4, 0.1 MKClO4 and 0.1 M NaF. The Epzc of the Au(111) electrode has different values in these electrolyte solutions due to the specific adsorption of phosphate and fluoride anions on the Au(111) surface. In contrast, when the gold surface is covered by a SAM of β-Tg, the adsorption of anions is suppressed and similar values of Epzfc were measured in the three electrolytes. Additional chronocoulometric experiments were performed to determine the potentials of the zero total charge (Epztc) for the thiol covered electrode. Significant differences between numerical values of potentials of the zero free charge Epzfc and potentials of the zero total charge Epztc were observed.

Keywords: potential of zero free charge; immersion method; gold(111)electrode; self assembled monolayers; potential of zero total charge
* Correspondence address: 
Published Online: 2012-9-10
Published in Print: 2012-10-1

© by Oldenbourg Wissenschaftsverlag, München, Germany

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  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.2012.0280
Keywords for this article
potential of zero free charge; immersion method; gold(111)electrode; self assembled monolayers; potential of zero total 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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