Abstract
A mesoporous TiO2 (meso-TiO2) was synthesized, and used to prepare modified carbon paste electrode (CPE). The electrochemical sensing properties were characterized using K3[Fe(CN)6], showing that meso-TiO2 modified CPE possesses larger surface area and higher electron transfer rate. The electrochemical behavior of p-cresol was investigated. At the meso-TiO2 modified CPE, the oxidation peak current of p-cresol remarkably increases, and the oxidation peak potential shifts negatively, suggesting that meso- TiO2 exhibits highly efficient catalytic activity to the oxidation of p-cresol. Based on this, a sensitive, rapid and convenient electrochemical method was developed for the detection of p-cresol. The linear range is from 1.5 × 10−7 and 2.0 × 10−5 mol l−1, and the limit of detection is as low as 8.0 × 10−8 mol l−1. Finally, the new method was successfully used to determine p-cresol in water samples.
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Published in Russian in Elektrokhimiya, 2011, Vol. 47, No. 11, pp. 1342–1347.
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Zhang, S. Electrochemical determination of p-cresol using mesoporous TiO2-modified carbon paste electrode. Russ J Electrochem 47, 1257–1261 (2011). https://doi.org/10.1134/S1023193511110164
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DOI: https://doi.org/10.1134/S1023193511110164