Surface electrochemistry and reactivity

Autors/ores

  • Juan M. Feliu Institute of Electrochemistry, University of Alacant
  • Enrique Herrero Institute of Electrochemistry, University of Alacant

Resum

Here we review the building blocks of platinum electrodes in surface electrochemistry. These blocks are primarily related to the surface topography because the correct electrochemical responses of wide terraces and the effect of steps of different symmetry and kink sites are important for in situ characterization. Anion adsorption also plays a key role in
the fingerprint features associated with surface topography.
Additionally, competitive adsorption of anions and other species in solution have important consequences for reactivity.
Likewise, adatom adsorption is a structure-sensitive process
that affects the surface composition of the electrode. Two cases can be considered, depending on whether the adatom
forms more than a single stable layer in the potential region
usually scanned. In the latter case, when multilayers are generated, the results can be compared with those obtained from the corresponding single-crystal electrodes, with the possibility to compare the characteristic behaviors of the two systems.

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