Co/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 H 2SO 4 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.
Gualandi I., Solito A.G., Scavetta E., Tonelli D. (2012). Electrochemical Pretreatment of Pt Surface: Modification with Co/Al Layered Double Hydroxide for Analytical Applications. ELECTROANALYSIS, 24(4), 857-864 [10.1002/elan.201100567].
Electrochemical Pretreatment of Pt Surface: Modification with Co/Al Layered Double Hydroxide for Analytical Applications
GUALANDI, ISACCO;SCAVETTA, ERIKA;TONELLI, DOMENICA
2012
Abstract
Co/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 H 2SO 4 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
