Investigation of the physicochemical properties of Bi,Ca-doped BaZrO3 perovskites

Perovskite oxides, primarily the ones based on BaZrO3, hold significant interest for diverse applications in a variety of disciplines, such as electrocatalysts or electrolytes in fuel cell technologies. This study outlines the synthesis of BaZrO3 perovskite powders via a sol-gel route, and explores the incorporation of bismuth and calcium cations through single doping. Extensive characterization, encompassing X-ray diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller analysis, oxygen/hydrogen temperature-programmed desorption/reduction, and scanning electron microscopy/energy-dispersive X-ray spectroscopy, reveals the impact of the metal cation incorporation on physicochemical properties, enhancing oxygen vacancies and lattice oxygen species within the BaZrO3 perovskite structure.

Automated summary

This study synthesized BaZrO3 perovskite powders via a sol-gel route and investigated the effects of doping with bismuth and calcium cations. The extensive characterization revealed that the metal cation incorporation enhanced the physicochemical properties of the BaZrO3 perovskite structure.