Microwave Synthesis and Characterization of Nanoscale Lanthanum Cobaltite

Abstract:

Nanoscale lanthanum cobaltite with perovskite-type was successfully synthesized by microwave irradiation directly and was characterized by XRD, SEM, XPS and BET analysis. The results show that the size of particle was 18 nm averagely, the surface area to be 31.0 m² g⁻¹. The electrochemical properties were studied by cyclic voltammetry and steady state polarization. The cyclic voltammogram between 0 and 0.55 V exhibited two pairs of redox peaks prior to the onset of O₂ evolution in 1 mol dm⁻³ KOH. The Tafel slope and the reaction order with respect to concentration of OH⁻ were found to be 60 mV decade⁻¹ and ca. 1, respectively.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 1322-1326
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.1322
• Online since: February 2012
• Authors: Xiao Yu Jiang, Jin Chen, Wen Zhe Chen
• Keywords: Cyclic Voltammetry (CV), Lanthanum Cobaltite, Microwave Synthesis, Tafel Slope

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