Electrochemical Pretreatment of Pt Surface: Modification with Co/Al Layered Double Hydroxide for Analytical Applications

Electroanalysis - Tập 24 Số 4 - Trang 857-864 - 2012
Isacco Gualandi1, Antonio Giuseppe Solito1, Erika Scavetta1, Domenica Tonelli1
1Dipartimento di Chimica Fisica ed Inorganica, University of Bologna, viale Risorgimento 4, 40136 Bologna, Italy

Tóm tắt

AbstractCo/Al Layered Double Hydroxide thin films were prepared by electrodeposition on Pt electrodes previously submitted to different electrochemical pretreatments, consisting of a large number of potential cycles (Pt‐CVT) or a cathodic polarization (Pt‐CT) in a H2SO4 solution. Their features and analytical performance for the determination of aniline and phenol were compared to those of the film deposited on a mechanically polished Pt electrode (Pt‐MT). The Pt‐MT and Pt‐CVT electrodes displayed comparable sensitivities and equal limits of detection for both analytes. The Pt‐CT showed a lower sensitivity, but a range of linear response of about 5 orders of magnitude for aniline.

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Electroanalysis

Tập 24 Số 4

857-864

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