Characterization of carbon paste electrodes modified with manganese based perovskites-type oxides from the amperometric determination of hydrogen peroxide

GUILLERMINA L. LUQUE; NANCY F. FERREYRA; A. GABRIELA LEYVA; GUSTAVO A. RIVAS

ELSEVIER SCIENCE SA

Año: 2009 vol. 142 p. 331 - 331

p style="TEXT-ALIGN: justify; LINE-HEIGHT: 200%; TEXT-INDENT: 35.4pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal">This work proposes the amperometric determination of hydrogen peroxide reduction and oxidation as a tool for the characterization of La1-xAxMnO3 perovskites dispersed in a graphite composite electrode (carbon paste electrode, CPE). The catalytic activity of perovskites towards the oxidation and reduction of hydrogen peroxide is highly dependent on the nature of the A cation and on the temperature