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Issue 22, 2012
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Platinum nanoparticles intermediate layer in solid-state selective electrodes

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Abstract

A platinum nanoparticles (PtNPs) layer is used for the first time as an ion-to-electron transducer in a solid-state ion-selective electrode (SC-ISE). The electrode was prepared by adding the PtNPs as an intermediate layer between the ionophore-doped solvent polymeric membrane and the electrical conductor. The PtNPs layer was characterized by high resolution transmission electron microscopy, selected area electron diffraction and X-ray photoelectron spectroscopy. The stability of the electrical potential of the new solid-contact electrode was examined by performing current-reversal chronopotentiometry while the influence of the interfacial water film was assessed by the potentiometric aqueous-layer test. The performance of the new electrode was evaluated by determining K+. The new electrode presented a Nernstian slope, a very good reproducibility of the standard potential values and a small potential drift.

Graphical abstract: Platinum nanoparticles intermediate layer in solid-state selective electrodes

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Article information


Submitted
09 Jul 2012
Accepted
19 Sep 2012
First published
20 Sep 2012

Analyst, 2012,137, 5272-5277
Article type
Paper

Platinum nanoparticles intermediate layer in solid-state selective electrodes

B. Paczosa-Bator, L. Cabaj, R. Piech and K. Skupień, Analyst, 2012, 137, 5272
DOI: 10.1039/C2AN35933B

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