A novel TiO2/multi-walled carbon nanotubes (MWCNTs) composite film-modified electrode was fabricated to devolop an electrochemical sensor for the simultaneous determination of hydroquinone (HQ) and catechol (CC). The prepared electrode not only separated the peaks of HQ and CC on the cyclic voltammogram with oxidation potential difference of 116 mV but also lowered the overpotential significantly and increased the reversible process and the peak currents of HQ and CC. In 0.1 M PBS (pH = 7.0). The oxidation peak current was linearly proportional to the concentration of CC and HQ in two broad linear ranges with the detection limit of 0.8 μM. The present electrochemical sensor for the simultaneous determination of CC and HQ showed high sensitivity and low detection limit.
Research on Chemical Intermediates – Springer Journals
Published: Oct 9, 2013
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