Systematic synthesis of mixed-metal oxides in NiO–Co3O4, NiO–MoO3, and NiO–CuO systems via liquid-feed flame spray pyrolysis

Abstract

We report here on the systematic synthesis of three nanopowder series along the NiO–Co3O4, NiO–MoO3, and NiO–CuO tie lines. Sixteen individual samples were produced via liquid-feed flame spray pyrolysis (LF-FSP) and analyzed by SSA, SEM, EDX, FTIR, TGA-DTA, and XRD. The LF-FSP process is a general aerosol combustion synthesis route to a wide range of lightly agglomerated oxide nanopowders. The materials reported here were produced by aerosolizing ethanol solutions of propionate and ammonium molybdate precursors synthesized by reacting the metal nitrate with propionic acid. Particular ratios of the precursors were selected to control the compositions of the samples produced.