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Au(111) - 5 M H2SO4

echemdb identifier: sato_2006_effect_725_p3_f4c_red tags: BCV

A cyclic voltammogramm for Au(111) recorded in 5 M H2SO4 at a scan rate of 5.0 \(\mathrm{mV\,s^{-1}}\) from Figure 4c in K. Sato et al. Effect of Sulfuric Acid Concentration on the Structure of Sulfate Adlayer on Au(111) Electrode. Electrochem. Commun., 8(5):725–730, May 2006. doi:https://doi.org/10.1016/j.elecom.2006.03.001.

Further information

The figure shows digitized data.

The Au(111) electrode was prepared by:

Metadata

Details on the electrochemical system (yaml)
electrodes:
- function: reference electrode
  name: REF
  type: Ag/AgCl-sat
- function: counter electrode
  material: (not given)
  name: CE
- crystallographic orientation: '111'
  function: working electrode
  geometric electrolyte contact area:
    unit: cm-2
  material: Au
  name: WE
  preparation procedure:
    description:
    - Annealed in a hydrogen flame for 1 min.
    - Quenched in ultrapure water.
  shape:
    type: bead shaped
  source:
    manufacturer: homemade
electrolyte:
  comment: The electrolyte was at room temperature.
  components:
  - name: H2O
    proportion:
      unit: volume percent
      value: 100
    purity:
      total ion conductivity:
        unit: MOhm cm
        value: 18.2
    source:
      purity:
        grade: ultrapure water
      refinement: Milli-Q SP-TOC
    type: solvent
  - concentration:
      unit: mol L-1
      value: 5.0
    name: H2SO4
    source:
      purity:
        grade: ultrapure
      supplier: Cica-Merck
    type: acid
  ph:
    comment: "Estimated with CurTiPot on extraction from publication using a temperature\
      \ of 25\xB0C."
    value: -1.078
  temperature:
    unit: deg_C
    value: 25
  type: aqueous
type: electrochemical
Citation key (bibtex)
@article{sato_2006_effect_725,
    author = "Sato, Kazuhiro and Yoshimoto, Soichiro and Inukai, Junji and Itaya, Kingo",
    title = "Effect of Sulfuric Acid Concentration on the Structure of Sulfate Adlayer on Au(111) Electrode",
    year = "2006",
    month = "May",
    journal = "Electrochem. Commun.",
    volume = "8",
    number = "5",
    pages = "725--730",
    issn = "1388-2481",
    doi = "https://doi.org/10.1016/j.elecom.2006.03.001",
    abstract = "The adsorption of sulfate on Au(111) single-crystal electrode was examined in sulfuric acid solutions of various concentrations (0.5\textendash 7.5 M) by cyclic voltammetry and in situ scanning tunneling microscopy (STM). The well-known sulfate adlayer with ({$\surd$}3 \texttimes{} {$\surd$}7) unit cell was found in 0.5 M sulfuric acid by in situ STM. In 2.5 and 5.0 M sulfuric acid, a new order\textendash disorder phase transition, from the ({$\surd$}3 \texttimes{} {$\surd$}7) adlayer to a disordered structure, was found to take place at ca. 1.1 V vs. Ag{$\mid$}AgCl{$\mid$}KCl(sat.). In 7.5 M sulfuric acid, no current spikes were seen in the CV profile, and in situ STM showed that the sulfate adlayer was disordered.",
    keywords = "Au(111) electrode,Concentration,In situ STM,Phase transition,Sulfate adlayer,sulfuric acid (H2SO4)"
}
Details about the original figure in the publicaton (yaml).
comment: ''
fields:
- name: E
  orientation: x
  reference: Ag/AgCl
  type: number
  unit: V
- name: j
  orientation: y
  type: number
  unit: "\xB5A cm\u207B\xB2"
measurement type: CV
scan rate:
  unit: mV / s
  value: 5.0
simultaneous measurements: []
type: digitized
version: 1
Details about the curation process of this entry (yaml).
process:
- date: '2021-10-11'
  name: Johannes M. Hermann
  orcid: https://orcid.org/0000-0001-7119-1295
  role: curator
- date: '2022-06-22'
  name: Albert Engstfeld
  orcid: https://orcid.org/0000-0002-9686-3948
  role: reviewer