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