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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 2
BKCSDE 34(2)
February 20, 2013 

Effect of Different Pretreatments on Indium-Tin Oxide Electrodes
Moonjeong Choi, Kyungmin Jo, Haesik Yang*
Indium-tin oxide, Pretreatment, Electrochemical property
The effect of pretreatment on indium-tin oxide (ITO) electrodes has been rarely studied, although that on metal and carbon electrodes has been enormously done. The electrochemical and surface properties of ITO electrodes are investigated after 6 different pretreatments. The electrochemical behaviors for oxygen reduction, Ru(NH3)6 3+ reduction, Fe(CN)6 3− reduction, and p-hydroquinone oxidation are compared, and the surface roughness, hydrophilicity, and surface chemical composition are also compared. Oxygen reduction, Fe(CN)6 3− reduction, and p-hydroquinone oxidation are highly affected by the type of the pretreatment, whereas Ru(NH3)6 3+ reduction is almost independent of it. Interestingly, oxygen reduction is significantly suppressed by the treatment in an HCl solution. The changes in surface roughness and composition are not high after each pretreatment, but the change in contact angle is substantial in some pretreatments.
421 - 425
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