engleski

Influence of perchlorates and halides on the electrochemical properties of indium(III)

The influence of the composition and concentration of individual basic electrolytes on the electrode processes of the indium(III)/indium(0) (Hg) redox pair was studied. The results were mainly obtained using square-wave voltammetry because cyclic voltammetry does not seem to be a proper method of choice for this system. In non-complexing media the electrode reaction is controlled by the preceding reaction, which is probably the dissociation of the indium(III) aqua complex. In concentrated sodium perchlorate solutions an inverse proportionality between the peak height and water activity is observed. The peak current generally increases with increasing electrolyte concentration, indicating the acceleration of the overall electrode reaction. It can reach a constant value only in concentrated chloride and bromide media. Under such conditions tetracoordinated species seem to be the highest possible complexes.

voltammetry; electrolytes; indium

nije evidentirano