Synthesis Of La1-XNdXNiO3 Nanosystem For Materials And Catalytic CO Oxidation Studies: A Pollution Control Strategy.

Abstract

CrystallineLanthanum and Neodymium nickelate perovskites and their intermediate compositions La1-XNdXNiO3 (x =0.0, 0.3, 0.5, 0.7, and 1.0) were successfully prepared via co-precipitation precursor technique. The crystal structure and phase formation were confirmed by powdered X-ray diffraction. LaNiO3 and NdNiO3 were identified to be single-phase and are indexed to rhombohedral and orthorhombic structures, respectively. The intermediate x=0.3, showed rhombohedral whereas x =0.5 and 0.7 showed orthorhombic phase. The bonding characteristics were studied by FTIR spectroscopy. Magnetic susceptibility measurements and Electron Spin Resonance study provide an insight into the paramagnetic catalytically active species. This investigation was an attempt to understand the influence of A-site substitution in LaNiO3 with Nd+3 ions and their possible impact on the solid-state properties. Being thermally stable materials, they were tested for a model catalytic CO oxidation for pollution control strategy. They showed an increase in the activity of CO oxidation to CO2.