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.
Electrochemical Pretreatment of Pt Surface: Modification with Co/Al Layered Double Hydroxide for Analytical Applications / Gualandi I.; Solito A.G.; Scavetta E.; Tonelli D.. - In: ELECTROANALYSIS. - ISSN 1040-0397. - STAMPA. - 24(4):(2012), pp. 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.
