Abstract
In this work a study on the preparation and characterization of the lead film in situ and ex situ plated screen-printed carbon electrodes (PbF/SPCEs) was presented, focusing in particular on their attractive stripping analytical performance. The lead film ex situ plated screen-printed carbon electrodes were prepared using methods based on: (a) the electrochemical deposition of lead film on the screen-printed carbon electrode surface and (b) the electrochemical deposition of lead into the interstitial space of a colloidal crystal template formed on SPCE. The electrodes of interest were tested as novel, potential sensors for the anodic stripping voltammetric determination of zinc traces in nondeaerated solution of 0.01molL−1 hydrochloric acid. A comparison, of the stripping performance between a bare screen-printed carbon electrode and the PbF/SPCEs prepared with use of the investigated plating methods revealed a distinct advantage of the lead film ex situ plated screen-printed carbon electrode prepared with the use of a colloidal crystal template. This electrode shows an increase in electrochemical performance due to the porosity that gives this material a high active surface area.
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