Comparison of multi-walled carbon nanotubes and poly(3-octylthiophene) as ion-to-electron transducers in all-solid-state potassium ion-selective electrodes

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Zekra Mousavi, Agnieszka Teter, Andrzej Lewenstam, Magdalena Maj-Zurawska, Ari Ivaska, Johan Bobacka
Förläggare: WILEY-BLACKWELL
Publiceringsår: 2011
Tidskrift: Electroanalysis
Tidskriftsakronym: ELECTROANAL
Volym: 23
Nummer: 6
Artikelns första sida, sidnummer: 1352
Artikelns sista sida, sidnummer: 1358
Antal sidor: 7
ISSN: 1040-0397
eISSN: 1521-4109


Abstrakt

Multi-walled carbon nanotubes (MWCNTs) were compared with poly(3-octylthiophene) (POT) as ion-to-electron transducer in all-solid-state potassium ion-selective electrodes with valinomycin-based ion-selective membranes. MWCNTs and POT were mixed with the other components of the potassium ion-selective membrane cocktail (valinomycin, KTpClPB, o-NPOE, PVC, THF) which was then applied on a glassy carbon (GC) substrate to prepare single-piece ion-selective electrodes (SPISEs). Results from potentiometric and impedance measurements showed that the MWCNT-based electrodes have a more reproducuible standard potential and a lower overall impedance than the electrodes based on POT. Both types of electrodes showed similar sensitivity to potassium ions and no redox sensitivity.


Nyckelord

All-solid-state potassium-selective electrodes, Impedance spectroscopy, Multi-walled carbon nanotubes, Poly(3-octylthiophene), Potentiometry

Senast uppdaterad 2019-15-12 vid 04:29