Abstract

Our goal in this research was to obtain lead oxide nanostructure and NiO doped with PbO through the combustion of a citrate/nitrate gel. In this method, lead oxide nanostructure and NiO doped with PbO was synthesized through the reaction of citric acid (C₆H₇O₈.H₂O) solution and lead acetate (Pb(C₂H₃O₂)) solution as stabilizer and precursor, respectively. At first, in the presence of metal nitrate and citric acid, transparent sol was obtained, and then the transparent sol was transformed into dry gel through two steps: evaporating in water bath to form wet gelatin and then drying in oven. In this synthesis, the molar ratio of citric acid to metal ions (MRCM) is equal to 1.5. The prepared lead oxide nanostructure and NiO doped with PbO (Pb_0.95Ni_0.05O_1.97) were characterized by FT-IR spectroscopy, X-ray diffraction (XRD), energy dispersive X-ray analysis (EDAX) and scanning electron microscopy (SEM). The prepared PbO consists of the crystallites about 59 nm.

Key words: PbO, combustion, nanostructure, NiO, Pb_0.95Ni_0.05O_1.97.