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

Zekra Mousavi, Agnieszka Teter, Andrzej Lewenstam, Magdalena Maj-Zurawska, Ari Ivaska, Johan Bobacka

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    53 Sitaatiot (Scopus)

    Abstrakti

    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.
    AlkuperäiskieliEi tiedossa
    Sivut1352–1358
    Sivumäärä7
    JulkaisuElectroanalysis
    Vuosikerta23
    Numero6
    DOI - pysyväislinkit
    TilaJulkaistu - 2011
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

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

    Viittausmuodot