Effects of supporting electrolyte and zeolite co-cations on the electrochemical response of zeolite-modified electrodes

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Abstract
The interpretation of cyclic voltammograms observed for ion-exchanged zeolite-modified electrodes is discussed in this paper. The conditions under which intrazeolite moieties are electrochemically silent are described with emphasis on the zeolite size exclusion of electrolyte cations. The influence of zeolite co-cation on electrochemical response is addressed using silver-ion-exchanged zeolite Y containing exclusively small-channel silver ions. Furthermore, the effects of electrolyte anions and solvent on the electrode response are utilized to establish the location of the electron-transfer process making use of the anion and molecule exclusion properties of zeolites.

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